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Journal articles on the topic 'High light illumination'

Author: Grafiati

Published: 11 March 2023

Last updated: 31 July 2025

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1

Shi, Fenghua, Jing Wen, and Dangyuan Lei. "High-efficiency, large-area lattice light-sheet generation by dielectric metasurfaces." Nanophotonics 9, no. 12 (2020): 4043–51. http://dx.doi.org/10.1515/nanoph-2020-0227.

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AbstractLattice light-sheet microscopy (LLSM) was developed for long-term live-cell imaging with ultra-fine three-dimensional (3D) spatial resolution, high temporal resolution, and low photo-toxicity by illuminating the sample with a thin lattice-like light-sheet. Currently available schemes for generating thin lattice light-sheets often require complex optical designs. Meanwhile, limited by the bulky objective lens and optical components, the light throughput of existing LLSM systems is rather low. To circumvent the above problems, we utilize a dielectric metasurface of a single footprint to

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Yoshinobu, Tatsuo, and Ko-ichiro Miyamoto. "Efficient Illumination for a Light-Addressable Potentiometric Sensor." Sensors 22, no. 12 (2022): 4541. http://dx.doi.org/10.3390/s22124541.

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A light-addressable potentiometric sensor (LAPS) is a chemical sensor that is based on the field effect in an electrolyte–insulator–semiconductor structure. It requires modulated illumination for generating an AC photocurrent signal that responds to the activity of target ions on the sensor surface. Although high-power illumination generates a large signal, which is advantageous in terms of the signal-to-noise ratio, excess light power can also be harmful to the sample and the measurement. In this study, we tested different waveforms of modulated illuminations to find an efficient illumination

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Curlin, Jahnavi, and Charles K. Herman. "Current State of Surgical Lighting." Surgery Journal 06, no. 02 (2020): e87-e97. http://dx.doi.org/10.1055/s-0040-1710529.

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AbstractSurgical performance in the operating room (OR) is supported by effective illumination, which mitigates the inherent environmental, operational, and visual challenges associated with surgery. Three critical components are essential to optimize operating light as illumination: (1) centering on the surgeon's immediate field, (2) illuminating a wide or narrow field with high-intensity light, and (3) penetrating into a cavity or under a flap. Furthermore, optimal surgical illumination reduces shadow, glare, and artifact in visualization of the surgical site. However, achieving these princi

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Hanji, Param, Muhammad Z. Alam, Nicola Giuliani, Hu Chen, and Rafał K. Mantiuk. "HDR4CV: High Dynamic Range Dataset with Adversarial Illumination for Testing Computer Vision Methods." Journal of Imaging Science and Technology 65, no. 4 (2021): 40404–1. http://dx.doi.org/10.2352/j.imagingsci.technol.2021.65.4.040404.

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Abstract Benchmark datasets used for testing computer vision (CV) methods often contain little variation in illumination. The methods that perform well on these datasets have been observed to fail under challenging illumination conditions encountered in the real world, in particular, when the dynamic range of a scene is high. The authors present a new dataset for evaluating CV methods in challenging illumination conditions such as low light, high dynamic range, and glare. The main feature of the dataset is that each scene has been captured in all the adversarial illuminations. Moreover, each s

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Gadia, Davide, Vincenzo Lombardo, Dario Maggiorini, and Antonio Natilla. "Implementing Many-Lights Rendering with IES-Based Lights." Applied Sciences 14, no. 3 (2024): 1022. http://dx.doi.org/10.3390/app14031022.

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In recent years, many research projects on real-time rendering have focused on the introduction of global illumination effects in order to improve the realism of a virtual scene. The main goal of these works is to find a compromise between the achievable quality of the resulting rendering and the intrinsic high computational cost of global illumination. An established approach is based on the use of Virtual Point Lights, i.e., “fictitious” light sources that are placed on surfaces in the scene. These lights simulate the contribution of light rays emitted by the light sources and bouncing on di

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Rahman, Md Momtazur, David Luke Field, Soyed Mohiuddin Ahmed, Md Tanvir Hasan, Mohammad Khairul Basher, and Kamal Alameh. "LED Illumination for High-Quality High-Yield Crop Growth in Protected Cropping Environments." Plants 10, no. 11 (2021): 2470. http://dx.doi.org/10.3390/plants10112470.

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Vegetables and herbs play a central role in the human diet due to their low fat and calory content and essential antioxidant, phytochemicals, and fiber. It is well known that the manipulation of light wavelengths illuminating the crops can enhance their growth rate and nutrient contents. To date, it has not been easy to generalize the effects of LED illumination because of the differences in the plant species investigated, the measured traits, the way wavelengths have been manipulated, and the plants’ growing environments. In order to address this gap, we undertook a quantitative review of LED

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Feng, Di, Jaehwan Yoo, Kaname Nagatani, Wookyu Kim, and HyeongChae Kim. "High Illumination Efficiency Linear Light Source Using Light Emitting Diodes." Japanese Journal of Applied Physics 46, no. 2 (2007): 563–65. http://dx.doi.org/10.1143/jjap.46.563.

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Ito, Yuhei, Kyouichi Suzuki, Tsuyoshi Ichikawa, et al. "Intraoperative Fluorescence Cerebral Angiography by Laser Surgical Microscopy: Comparison With Xenon Microscopy and Simultaneous Observation of Cerebral Blood Flow and Surrounding Structures." Operative Neurosurgery 16, no. 6 (2018): 700–706. http://dx.doi.org/10.1093/ons/opy159.

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Abstract BACKGROUND Laser surgical microscopes should enable uniform illumination of the operative field, and require less luminous energy compared with existing xenon surgical microscopes. OBJECTIVE To examine the utility of laser illumination in fluorescence cerebral angiography. METHODS Fluorescein sodium (fluorescein) was used as a fluorescent dye. We first compared the clarity of cerebral blood flow images collected by fluorescence angiography between the laser illumination and xenon illumination methods. We then assessed use of the laser illuminator for simultaneous observation of blood

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Shao, Wei, Kaibin Liu, Yunqiu Shao, and Awei Zhou. "Smooth Surface Visual Imaging Method for Eliminating High Reflection Disturbance." Sensors 19, no. 22 (2019): 4953. http://dx.doi.org/10.3390/s19224953.

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At present, visual imaging is widely applied for surface defects such as bumps and scratches in the manufacture of precise parts with a highly reflective surface. However, the high light reflection and halo disturbance as a result of the illumination in visual imaging exert a direct influence on the accuracy of defect detection. In this regard, the present paper develops an adaptive illumination method based on space–time modulation for a visual imaging system. Furthermore, a digital micro-mirror device (DMD) is employed to realize the pixel-level spatiotemporal modulation of illumination. The

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Wang, Depeng, Suva Roy, Andra M. Rudzite, Greg D. Field, and Yiyang Gong. "High-resolution light-field microscopy with patterned illumination." Biomedical Optics Express 12, no. 7 (2021): 3887. http://dx.doi.org/10.1364/boe.425742.

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Rustemli, Sabir, Behcet Kocaman, and Suat Avcil. "Comparative Analysis of High-Pressure Sodium Vapor Luminaires with LED Luminaires in Tunnel Illumination." Light & Engineering, no. 04-2022 (August 2022): 87–96. http://dx.doi.org/10.33383/2022-003.

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Nowadays, some roads pass through underground tunnels due to technical inadequacy and high economic costs in constructing highways, railways, and pedestrians. Tunnels are opened to pass through obstacles on the route (mountain, hill, etc.) to force the driver, disturb him, reduce the ramps that could endanger safety depending on nature’s state, and shorten travel distances. In this way, number of tunnels along with the road increases, and illuminating these tunnels with different characteristics varies day and night. Tunnel illumination calculations and applications are essential as good tunne

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Azis, Abdul, Nita Nurdiana, and Choirul Rizal. "Illumination Analysis Patal Pusri Intersection Underground Road." Jurnal Tekno 19, no. 2 (2022): 1–10. http://dx.doi.org/10.33557/jtekno.v19i2.1676.

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The traffic lane underpass is shaped tunnels built to provide a solution to traffic congestion that occurred on an, intersections and long underpass usually less than 0,1. 0,16 miles or miles Underpass Simpang Patal Pusri Palembang is a reserved for public, traffic and the public must be furnished with equipage. Road one way is the street lights, for that reason by Underpass Simpang Patal Pusri Palembang has installed lights. public roadsA kind of light to overpass, flat, intersection the sodium light the gas is high pressure or high-pressure sodium, son with the normal lighting 20 - 25 lux an

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Yabuuchi, Kento, Masahiro Hirano, Taku Senoo, Norimasa Kishi, and Masatoshi Ishikawa. "Real-Time Traffic Light Detection with Frequency Patterns Using a High-Speed Camera." Sensors 20, no. 14 (2020): 4035. http://dx.doi.org/10.3390/s20144035.

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LEDs are widely employed as traffic lights. Because most LED traffic lights are driven by alternative power, they blink at high frequencies, even at twice their frequencies. We propose a method to detect a traffic light from images captured by a high-speed camera that can recognize a blinking traffic light. This technique is robust under various illuminations because it can detect traffic lights by extracting information from the blinking pixels at a specific frequency. The method is composed of six modules, which includes a band-pass filter and a Kalman filter. All the modules run simultaneou

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Leng, Xue, and Jin Hua Yang. "Light Illumination Information Extraction Method of High Dynamic Range Image." Advanced Materials Research 756-759 (September 2013): 952–55. http://dx.doi.org/10.4028/www.scientific.net/amr.756-759.952.

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In this Paper we Investigated Access Technology of the Light Illumination Information in Real Scene. by Analyzing the Conventional Method, we Proposed a Method to Access Light Illumination Information of High Dynamic Range Image. in the Method, the Image Information Obtained by Camera was Converted to the Panoramic Image by Using Image Mosaic Technology and then Converted to the High Dynamic Range Image by the Software HDR.

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Lapyga, Ihor. "Application of Light Sensors Amplifier and Wireless Networking Sensor for Ambient Light Data to the Android Platform." International Journal of Recent Technology and Engineering (IJRTE) 8, no. 3 (2019): 930–35. https://doi.org/10.35940/ijrte.C4097.098319.

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Modern technologies of growing different plants types in greenhouses envisage automated systems use for monitoring climatic parameters, on which the ripening of fruits and yields depend. At the development and application of such automated systems, the focus is on measuring the accuracy of temperature and humidity soil, whereas to determine the level of illumination used sensors, that measure the total illumination or Photosynthetic Active Radiation (400-700 nm) with error up to 20%. Under conditions of insufficient photon flux density, even at the optimal moisture level and temperature in the

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Hao, R., A. Ge, X. Tao, Y. Liu, B. Zhao, and E. Yang. "Optical design of a high-mast luminaire based on four COB LED light source modules." Lighting Research & Technology 51, no. 3 (2018): 447–56. http://dx.doi.org/10.1177/1477153518764774.

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Light-emitting diodes (LEDs) have been widely used in road lighting. This study investigates the optical design of a high-mast luminaire based on four chips-on-board LED light source modules and applies it to road lighting. The model of the high-mast luminaire is built with Solidworks, and then the optical simulations are analysed by Tracepro and Dialux. We also make a physical prototype of the high-mast luminaire to test its performance in practice. The illuminance distribution of the test area is nearly rectangular. The interior of the rectangle forms a smaller highlighted rectangular illumi

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Száz, Dénes, Zoltán Kolláth, Ferenc Szabó, and Péter Csuti. "Living Environmental Laboratory for Lighting: Reduction of Light Pollution at Hungarian Settlements." International Journal of Sustainable Lighting 21, no. 2 (2020): 66–75. http://dx.doi.org/10.26607/ijsl.v21i2.90.

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The International Dark Sky Association has a flight of rules for public lighting in dark sky parks. In Hungary, many settlements still illuminate with compact fluorescent lights and sodium lamps, that do not fulfill these rules. In our research project, financed by a grant of the European Union, we established a system of Living Environmental Laboratory for Lighting at two settlements in dark sky parks in Hungary. As the first step, the public lighting system was reconstructed, so that it satisfied the rules of IDA. We designed new LED luminaires with optimal illumination and optical propertie

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Journal, Baghdad Science. "The contrast and illumination technique for image capturing under different Tungsten illumination." Baghdad Science Journal 7, no. 2 (2010): 939–47. http://dx.doi.org/10.21123/bsj.7.2.939-947.

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The digital camera which contain light unit inside it is useful with low illumination but not for high. For different intensity; the quality of the image will not stay good but it will have dark or low intensity so we can not change the contrast and the intensity in order to increase the losses information in the bright and the dark regions. . In this search we study the regular illumination on the images using the tungsten light by changing the intensities. The result appears that the tungsten light gives nearly far intensity for the three color bands(RGB) and the illuminated band(L).the resu

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KhudhairAbbas, Hiba. "The contrast and illumination technique for image capturing under different Tungsten illumination." Baghdad Science Journal 7, no. 2 (2010): 939–47. http://dx.doi.org/10.21123/bsj.2010.7.2.939-947.

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The digital camera which contain light unit inside it is useful with low illumination but not for high. For different intensity; the quality of the image will not stay good but it will have dark or low intensity so we can not change the contrast and the intensity in order to increase the losses information in the bright and the dark regions. . In this search we study the regular illumination on the images using the tungsten light by changing the intensities. The result appears that the tungsten light gives nearly far intensity for the three color bands(RGB) and the illuminated band(L).the resu

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Okuda, Shino, Masahito Nagata, Katsunori Okajima, et al. "Lighting preferences of Iberian sausages for Spanish observers." EPJ Web of Conferences 305 (2024): 00026. http://dx.doi.org/10.1051/epjconf/202430500026.

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We report results of a visual experiment performed by 20 adult Spanish observers using calibrated images of 18 samples of sliced Iberian sausages under 15 illuminations, including 8 illuminants proposed by the International Commission on Illumination (CIE) and 7 light sources found in meat sections of supermarkets in Spain and Japan. Visual results from the pair comparison and magnitude estimation psychophysical methods used in our experiment showed a high correlation (Pearson’s linear correlation coefficient r = 0.915). Illumination strongly influenced color preferences of sliced Iberian saus

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Keomanee-Dizon, Kevin, Matt Jones, Peter Luu, Scott E. Fraser, and Thai V. Truong. "Extended depth-of-field light-sheet microscopy improves imaging of large volumes at high numerical aperture." Applied Physics Letters 121, no. 16 (2022): 163701. http://dx.doi.org/10.1063/5.0101426.

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Light-sheet microscopes must compromise among field of view, optical sectioning, resolution, and detection efficiency. High-numerical-aperture (NA) detection objective lenses provide higher resolution, but their narrow depth of field inefficiently captures the fluorescence signal generated throughout the thickness of the illumination light sheet when imaging large volumes. Here, we present ExD-SPIM (extended depth-of-field selective-plane illumination microscopy), an improved light-sheet microscopy strategy that solves this limitation by extending the depth of field (DOF) of high-NA detection

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Bhagawati, Chandra Miss Anjali Karsh. "PROTECTION, UTILIZATION AND ANALYSIS OF HIGH MAST STREET LIGHT IN RURAL AREA." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 6, no. 5 (2017): 283–88. https://doi.org/10.5281/zenodo.573540.

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High Mast Light gives the several cost effective advantages and cost is a major issue for rural area general services. This project illustrates the theoretical basis and the analytical development of the high mast lighting poles. In the late 1960"s, studies were conducted to investigate the impact that high-mast lighting gives on traffic performance, driver visibility, and illumination costs. It was found that increasing the height of the lighting offered a noticeable advantage in that it provided drivers with increased uniformity of illumination and brightness while minimizing discomfort and

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Rolston, Nicholas, Ross Bennett-Kennett, Laura T. Schelhas, et al. "Comment on “Light-induced lattice expansion leads to high-efficiency perovskite solar cells”." Science 368, no. 6488 (2020): eaay8691. http://dx.doi.org/10.1126/science.aay8691.

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Tsai et al. (Reports, 6 April 2018, p. 67) report a uniform light-induced lattice expansion of metal halide perovskite films under 1-sun illumination and claim to exclude heat-induced lattice expansion. We show that by controlling the temperature of the perovskite film under both dark and illuminated conditions, the mechanism for lattice expansion is in fact fully consistent with heat-induced thermal expansion during illumination.

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RUCHIN, Alexander B. "EFFECT OF ILLUMINATION ON GROWTH AND BEHAVIOR OF TWO CARP FISH SPECIES (CARASSIUS GIBELIO AND C. CARASSIUS)." Periódico Tchê Química 16, no. 32 (2019): 8–17. http://dx.doi.org/10.52571/ptq.v16.n32.2019.26_periodico32_pgs_8_17.pdf.

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Light is one of the most important environmental factors that influence many physiological, biochemical and behavioral reactions of aquatic organisms. In this work, experiments were conducted to study how illumination influences on the growth of juveniles of two carp fish species (Carassius gibelio and Carassius carassius). In this work, experiments. The experiments were carried out in aquariums and trays with a light gradient. Twenty-twenty five fish were placed in each aquarium, three-four individuals were placed in trays. Fish were fed to saturation three times a day. Optimal types of illum

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Hell, Stefan W., Pekka E. Hanninen, Martin Schrader, Tony Wilson, and Erkki Soini. "Resolution beyond the diffraction limit: 4PI-confocal-, STED-, and GSD- fluorescence microscopy." Proceedings, annual meeting, Electron Microscopy Society of America 53 (August 13, 1995): 56–57. http://dx.doi.org/10.1017/s0424820100136659.

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In far-field light microscopy resolution is determined by diffraction. In a far-field light microscope such as the confocal scanning light microscope, the resolution is governed by the extent of the squared intensity distribution in the focal region. Precise measurements of the confocal PSF have shown that the axial and lateral resolution of a confocal microscope (NA=1.4 oil, 1= 633 nm) is 520nm and 200nm (FWHM), respectively. At a wavelength of 375nm, this amounts to a resolution of 300 nm (axial) and 120 nm (lateral), obtainable with a standard confocal microscope of high aperture.A 3-7 fold

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Long, Teng, Xingqiang Dai, Linfeng Lan, et al. "High-performance CdScInO thin-film transistors and their stability improvement under negative bias (illumination) temperature stress." Journal of Materials Chemistry C 7, no. 44 (2019): 13960–65. http://dx.doi.org/10.1039/c9tc04989d.

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Steude, Anja, Emily C. Witts, Gareth B. Miles, and Malte C. Gather. "Arrays of microscopic organic LEDs for high-resolution optogenetics." Science Advances 2, no. 5 (2016): e1600061. http://dx.doi.org/10.1126/sciadv.1600061.

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Optogenetics is a paradigm-changing new method to study and manipulate the behavior of cells with light. Following major advances of the used genetic constructs over the last decade, the light sources required for optogenetic control are now receiving increased attention. We report a novel optogenetic illumination platform based on high-density arrays of microscopic organic light-emitting diodes (OLEDs). Because of the small dimensions of each array element (6 × 9 μm2) and the use of ultrathin device encapsulation, these arrays enable illumination of cells with unprecedented spatiotemporal res

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Clarke, Ted. "Resolving Low-Contrast Microstructure Using Transmitted and Reflected Circular Oblique Lighting (COL)." Microscopy Today 20, no. 3 (2012): 38–41. http://dx.doi.org/10.1017/s1551929511000642.

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A little-known illumination method for light microscopy goes by several names, the most prominent being “circular oblique lighting” (COL) and “hollow-cone illumination”. Matthews notes that hollow-cone or annular bright field illumination can give contrast and resolution superior to that obtainable with narrow-pencil illumination and under favorable conditions comparable to that obtained with phase optics. He demonstrates this with photomicrographs of the same unstained epithelial cell from the mouth mounted in saliva, imaged with a 0.65 numerical aperture (NA) 40× objective. Matthews also not

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Różowicz, Antoni, Henryk Wachta, Krzysztof Baran, Marcin Leśko, and Sebastian Różowicz. "Arrangement of LEDs and Their Impact on Thermal Operating Conditions in High-Power Luminaires." Energies 15, no. 21 (2022): 8142. http://dx.doi.org/10.3390/en15218142.

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Solid-state light sources are currently the fastest-growing group of light sources, replacing the previously used discharge and incandescent light sources. Thermal operating conditions of LEDs (Light Emitting Diode) play an important role in t maintaining long service life and constancy of luminous-electrical parameters. In the field of illumination, the service life parameter of light sources is important for the costs of maintenance of the illumination system, while the maintenance of the value of certain light parameters over time, such as luminous flux, color temperature and color renderin

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Serôdio, João, William Schmidt, Jörg C. Frommlet, Gregor Christa, and Matthew R. Nitschke. "An LED-based multi-actinic illumination system for the high throughput study of photosynthetic light responses." PeerJ 6 (September 4, 2018): e5589. http://dx.doi.org/10.7717/peerj.5589.

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The responses of photosynthetic organisms to light stress are of interest for both fundamental and applied research. Functional traits related to the photoinhibition, the light-induced loss of photosynthetic efficiency, are particularly interesting as this process is a key limiting factor of photosynthetic productivity in algae and plants. The quantitative characterization of light responses is often time-consuming and calls for cost-effective high throughput approaches that enable the fast screening of multiple samples. Here we present a novel illumination system based on the concept of ‘mult

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Lapa, Havva Elif, Ali Kökce, Durmuş Ali Aldemir, and Ahmet Faruk Özdemir. "The response of high barrier Schottky diodes to light illumination." Journal of Materials Science: Materials in Electronics 32, no. 4 (2021): 4448–56. http://dx.doi.org/10.1007/s10854-020-05186-6.

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Lee, Chi-Yuan, and Jian-Lin Liu. "Illumination Based on High-Power White Light-Emitting Diode Array." International Journal of Green Energy 9, no. 5 (2012): 421–29. http://dx.doi.org/10.1080/15435075.2011.621489.

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Ding, Zicheng, Ruyan Zhao, Yingjian Yu, and Jun Liu. "All-polymer indoor photovoltaics with high open-circuit voltage." Journal of Materials Chemistry A 7, no. 46 (2019): 26533–39. http://dx.doi.org/10.1039/c9ta10040g.

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Ayoub, Ahmed B., Abhijit Roy, and Demetri Psaltis. "Optical Diffraction Tomography Using Nearly In-Line Holography with a Broadband LED Source." Applied Sciences 12, no. 3 (2022): 951. http://dx.doi.org/10.3390/app12030951.

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We present optical tomography methods for a 3D refractive index reconstruction of weakly scattering objects using LED light sources. We are able to record holograms by minimizing the optical path difference between the signal and reference beams while separating the scattered field from its twin image. We recorded multiple holograms by illuminating the LEDs sequentially and reconstructed the 3D refractive index reconstruction of the sample. The reconstructions show high signal-to-noise ratio in which the effect of speckle artifacts is highly minimized due to the partially incoherent illuminati

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Cannell, M. B., and C. Soeller. "High Resolution Imaging Using Confocal and 2-photon Molecular Excitation Microscopy." Microscopy Today 8, no. 5 (2000): 20–26. http://dx.doi.org/10.1017/s1551929500065196.

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Fluorescence microscopy has proved to be an invaluable tool for biomedical science since it is possible to visualise small quantities of labelled materials (such as intracellular ions and proteins) in both fixed and living cells. However, the conventional wide field fluorescence microscope suffers from the disadvantage that objects outside the focal plane also fluoresce (in response to the excitation light) and this leads to a marked loss of contrast for objects in the focal plane. This is especially a problem when the fluorescent probe is distributed throughout the thickness of the cell and t

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Madrid-Wolff, Jorge, and Manu Forero-Shelton. "Protocol for the Design and Assembly of a Light Sheet Light Field Microscope." Methods and Protocols 2, no. 3 (2019): 56. http://dx.doi.org/10.3390/mps2030056.

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Light field microscopy is a recent development that makes it possible to obtain images of volumes with a single camera exposure, enabling studies of fast processes such as neural activity in zebrafish brains at high temporal resolution, at the expense of spatial resolution. Light sheet microscopy is also a recent method that reduces illumination intensity while increasing the signal-to-noise ratio with respect to confocal microscopes. While faster and gentler to samples than confocals for a similar resolution, light sheet microscopy is still slower than light field microscopy since it must col

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Guo, Tianyi, Anastasiia Svanidze, Xiaoyu Zheng, and Peter Palffy-Muhoray. "Regimes in the Response of Photomechanical Materials." Applied Sciences 12, no. 15 (2022): 7723. http://dx.doi.org/10.3390/app12157723.

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Photomechanical materials perform mechanical work in response to illumination. Photoisomerization-based photomechanical materials may operate in different regimes depending on the intensity of the illuminating light. We examine the photoresponse of liquid crystalline azo-acrylate networks and show that a material property, the characteristic intensity of the material, defines the boundaries between different regimes. Asymptotic analysis indicates that whereas at low relative light levels, photostress is proportional to intensity, at high levels, it is proportional to fluence. Model predictions

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Huang, Jie, Guangcai Yuan, Zhengliang Li, et al. "P‐14: High Mobility and High Light Stability Oxide Back‐Channel‐Etched TFT and Application to High‐End LCD NB Production." SID Symposium Digest of Technical Papers 55, no. 1 (2024): 1414–17. http://dx.doi.org/10.1002/sdtp.17813.

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A high mobility (29 cm2 /Vs) and high light stability oxide thin‐film transistor (TFT) with 8 mask back channel etched (BCE) structure has been fabricated. Remarkable enhancement in negative gate‐bias thermal stress with illumination has been achieved, resulting in a threshold voltage (Vth) shift of ‐0.01 V after 1 hour. A 16.0 inch WQHD 240Hz LCD NB has been developed using high mobility and high light stability oxide TFT in G8.5.

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Bachmann, Martin, and Tobias Storch. "First Nighttime Light Spectra by Satellite—By EnMAP." Remote Sensing 15, no. 16 (2023): 4025. http://dx.doi.org/10.3390/rs15164025.

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For the first time, nighttime VIS/NIR—SWIR (visible and near-infrared—shortwave infrared) spectra from a satellite mission have been analyzed using the EnMAP (Environmental Mapping and Analysis Program) high-resolution imaging spectrometer. This article focuses on the spectral characteristics. Firstly, we checked the spectral calibration of EnMAP using sodium light emissions. Here, By applying a newly devised general method, we estimated shifts of +0.3nm for VIS/NIR and −0.2nm for SWIR; the uncertainties were found to be within the range of [−0.4nm,+0.2nm] for VIS/NIR and [−1.2nm,+1.0nm] for S

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Yuan, Yuliang, Jinzhu Yang, Qi Sun, and Yan Huang. "Precomputed low-frequency lighting in cinematic volume rendering." PLOS ONE 19, no. 10 (2024): e0312339. http://dx.doi.org/10.1371/journal.pone.0312339.

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Cinematic Rendering (CR) employs physical models such as ray tracing and global illumination to simulate real-world light phenomena, producing high-quality images with rich details. In the medical field, CR can significantly aid doctors in accurate diagnosis and preoperative planning. However, doctors require efficient real-time rendering when using CR, which presents a challenge due to the substantial computing resources demanded by CR’s ray tracing and global illumination models. Precomputed lighting can enhance the efficiency of real-time rendering by freezing certain scene variables. Typic

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Tsai, Hsinhan, Reza Asadpour, Jean-Christophe Blancon, et al. "Light-induced lattice expansion leads to high-efficiency perovskite solar cells." Science 360, no. 6384 (2018): 67–70. http://dx.doi.org/10.1126/science.aap8671.

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Light-induced structural dynamics plays a vital role in the physical properties, device performance, and stability of hybrid perovskite–based optoelectronic devices. We report that continuous light illumination leads to a uniform lattice expansion in hybrid perovskite thin films, which is critical for obtaining high-efficiency photovoltaic devices. Correlated, in situ structural and device characterizations reveal that light-induced lattice expansion benefits the performances of a mixed-cation pure-halide planar device, boosting the power conversion efficiency from 18.5 to 20.5%. The lattice e

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Dang, Zhiya, and Duc Anh Dinh. "Interaction of light with lead halide perovskites: A review." Characterization and Application of Nanomaterials 2, no. 2 (2019): 67. http://dx.doi.org/10.24294/can.v2i2.813.

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Lead halide perovskites are the new rising generation of semiconductor materials due to their unique optical and electrical properties. The investigation of the interaction of halide perovskites and light is a key issue not only for understanding their photophysics but also for practical applications. Hence, tremendous efforts have been devoted to this topic and brunch into two: (i) decomposition of the halide perovskites thin films under light illumination; and (ii) influence of light soaking on their photoluminescence (PL) properties. In this review, we for the first time thoroughly compare

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Lacroix, Christian R., and Judith MacIntyre. "New techniques and applications for epi-illumination light microscopy." Canadian Journal of Botany 73, no. 11 (1995): 1842–47. http://dx.doi.org/10.1139/b95-196.

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This modification to the technique of epi-illumination light microscopy makes use of a new system of lenses that replaces expensive and not readily available dipping cone objectives. The newer objectives offer at least comparable resolution and depth of field, along with simple preparation procedures. An epi-illumination system is a good intermediate between the stereo microscope and a scanning electron microscope, offering magnification at high power that can aid in evaluation of potential scanning electron microscope specimens, as well as the time- and material-saving feature of being able t

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YU, GENYUAN, LISHA FENG, LU MENG, ZHIZHEN YE, and JIANGUO LU. "BEHAVIORS OF PHOTOCONDUCTIVE DETECTORS BASED ON MAPbI3 PEROVSKITE FILMS." Surface Review and Letters 25, no. 02 (2018): 1850057. http://dx.doi.org/10.1142/s0218625x18500579.

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The CH3NH3PbI3 films were synthesized by a facile low-cost solution process and were used to fabricate photoconductive detectors. The perovskite photodetector is very sensitive to light, with a high responsivity of 5.51[Formula: see text]mA/W and a sensitivity of 50 at 5[Formula: see text]V under 350[Formula: see text]nm light illumination. The device exhibits the fast rise and decay processes with similar appearance, and the relaxation time constants are 270 and 300[Formula: see text]ms, respectively. The photo-current shows an evident saturation, without further increase for prolonging the i

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Li, Yang, Marvin Knöchelmann, and Roland Lachmayer. "Beam Pre-Shaping Methods Using Lenslet Arrays for Area-Based High-Resolution Vehicle Headlamp Systems." Applied Sciences 10, no. 13 (2020): 4569. http://dx.doi.org/10.3390/app10134569.

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High-resolution light distributions are lately in demand for vehicle headlamp systems as an innovative lighting approach. This lighting approach can realize functionalities, such as precise glare avoidance and on-road projection, which are useful for improving traffic comfort and safety. For achieving the required high-resolution light distribution, area-based projection technologies, such as DMD, LCD, and LCoS, are considered to be integrated into such headlamps. These projection devices demand rectangular illumination areas with specific light distributions to fulfill the requirements for il

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Liu, Yu, Hong Tao Miao, Min Huang, Ai Ping Liu, and Xian Yao Wu. "Research on Visual Performance under Different Lighting Environments of LED Light Sources." Applied Mechanics and Materials 731 (January 2015): 92–96. http://dx.doi.org/10.4028/www.scientific.net/amm.731.92.

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In order to study the LED light source illumination and the correlated color temperature effect on the human eye visual performance and physiological changes, through the comparative experiments of visual task performances under the different color temperature (3000K low color temperature, 4000K intermediate color temperature) and the different illumination (1145lux high intensity, 500lux middle intensity, 288lux low illumination), study the relationship between the biological effect and visual performance from two aspects of the visual perception performance and the physical efficiency such a

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Sui, Xinqi, Dengfeng Kuang, Gangshuo Liu, Yumeng Ding, Meng meng, and Rimo Xi. "Highly focused beam generated with a height tuned micro-optical structure for high contrast microscopic imaging." Optics Express 32, no. 11 (2024): 19308. http://dx.doi.org/10.1364/oe.523606.

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Light sheet illumination technology improves the signal-to-noise ratio, resolution, and reduces scattered backgrounds for biological microscopic detection system. Here, we developed a novel micro-optical structure to produce a focused and uniform beam for the enhancement of imaging contrast. The beam intensity and working distance can be modified by adjusting the height and period of the structure. Our experiments successfully recorded structured light illumination, demonstrating the ability of the structure to capture high-contrast imaging data. We compared the light fields generated with and

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Heine, Jörn, Matthias Reuss, Benjamin Harke, Elisa D’Este, Steffen J. Sahl, and Stefan W. Hell. "Adaptive-illumination STED nanoscopy." Proceedings of the National Academy of Sciences 114, no. 37 (2017): 9797–802. http://dx.doi.org/10.1073/pnas.1708304114.

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The concepts called STED/RESOLFT superresolve features by a light-driven transfer of closely packed molecules between two different states, typically a nonfluorescent “off” state and a fluorescent “on” state at well-defined coordinates on subdiffraction scales. For this, the applied light intensity must be sufficient to guarantee the state difference for molecules spaced at the resolution sought. Relatively high intensities have therefore been applied throughout the imaging to obtain the highest resolutions. At regions where features are far enough apart that molecules could be separated with

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Kawazu, Takuya. "Schottky barrier lowering in n-AlGaAs/GaAs/AlGaAs double heterojunctions by local light illumination." Japanese Journal of Applied Physics 64, no. 7 (2025): 075001. https://doi.org/10.35848/1347-4065/ade64e.

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Abstract We investigated the wavelength dependence of the Schottky photocurrent (I SG ) in an n-AlGaAs/GaAs/AlGaAs double heterojunction under local light illumination. I SG was measured with the illumination from two light sources (Lights A and B). Light A illuminated the entire Schottky gate region at 60 μW mm−2 with varying the wavelength (940, 975, and 1064 nm), while Light B (670 nm laser) locally illuminated the ungated region at power levels (P B ) ranging from 0 to 2.9 μW. At low P B (≤86 nA) and high P B (≥0.14 μW), I SG increases and decreases, respectively, with increasing photon en

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Fadero, Tanner C., Therese M. Gerbich, Kishan Rana, et al. "LITE microscopy: Tilted light-sheet excitation of model organisms offers high resolution and low photobleaching." Journal of Cell Biology 217, no. 5 (2018): 1869–82. http://dx.doi.org/10.1083/jcb.201710087.

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Fluorescence microscopy is a powerful approach for studying subcellular dynamics at high spatiotemporal resolution; however, conventional fluorescence microscopy techniques are light-intensive and introduce unnecessary photodamage. Light-sheet fluorescence microscopy (LSFM) mitigates these problems by selectively illuminating the focal plane of the detection objective by using orthogonal excitation. Orthogonal excitation requires geometries that physically limit the detection objective numerical aperture (NA), thereby limiting both light-gathering efficiency (brightness) and native spatial res

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