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Relevant bibliographies by topics / Optical Illumination

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Academic literature on the topic 'Optical Illumination'

Author: Grafiati

Published: 4 June 2025

Last updated: 14 July 2025

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Journal articles on the topic "Optical Illumination"

1

Tsung, Tsing Tshih, Liang Yu Yang, Chih Hao Chen, and Ho Chang. "The Illumination of a Electrical Non-Fiberoptic Endoscope of Surgery." Applied Mechanics and Materials 300-301 (February 2013): 1645–48. http://dx.doi.org/10.4028/www.scientific.net/amm.300-301.1645.

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The electrical non-fiberoptic endoscope (ENFE) is primarily designed with no optical fiber. The illumination of a ENFE is important due to it affects the image quality of endoscope and the results of surgery. A investigations of the illumination of a ENFE are proposed in this paper. The illumination of ENFE is important due to it affects the image quality of endoscope and the results of surgery. The illuminations of orange-red inside were higher than the black inside. The illumination of rigid rod lens is 500 lux at 5 cm. The illuminations of ENFEs were decrease to 200 lux rapidly at 3 cm in case 4 although the illumination was over 1500 lux at first.

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Huang, Juan, Dana Křemenáková, Jiří Militký, and Vít Lédl. "Improvement and evenness of the side illuminating effect of side emitting optical fibers by fluorescent polyester fabric." Textile Research Journal 89, no. 10 (2018): 2010–18. http://dx.doi.org/10.1177/0040517518783344.

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A strong and even side illuminating effect is required for plastic optical fibers (POFs) in illuminating applications. In consideration of good flexibility and illumination, side emitting POFs with 2 and 3 mm core diameters are preferred, especially in active illuminating safety textiles. However, the side illumination intensity of side emitting POF varies significantly along the fiber length. Fluorescent polyester (PET) fabric rather than traditional surface modifications is employed to enhance and even the side illuminating effect of POFs based on the emitting principle of phosphors. Two testing methods of side illumination intensity are carried out on semi-automatic devices. The results indicate that 2 mm side emitting POFs might take the place of 3 mm side emitting POFs by using fluorescent PET fabric, with a similar side illuminating effect in applications under certain circumstances.

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Lin, Jinuan, and Chu Ma. "Far-field acoustic subwavelength imaging with blind structured illumination." Journal of the Acoustical Society of America 150, no. 4 (2021): A336. http://dx.doi.org/10.1121/10.0008494.

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The blind structured illumination microscopy (blind-SIM) is an optical method to surpass the diffraction limit, a fundamental limitation to all wave-based imaging techniques. By illuminating the object with multiple structured illumination patterns, the spatial frequency mixing between the object and the illuminations converts evanescent waves to propagating waves that can be detected by sensors in the far field. In this work, we develop blind-SIM in the acoustic domain. The blind acoustic structured illuminations (ASI) are generated by randomly located scatterers with subwavelength spatial distributions. The image of the object can be reconstructed with a subwavelength resolution from multiple far-field measurements (each produced by an ASI pattern) utilizing a compressed sensing algorithm. We demonstrate subwavelength acoustic imaging resolution in both kilohertz airborne and megahertz underwater acoustic imaging systems. The developed blind-SIM method has great potential in medical imaging, non-destructive testing, and underwater acoustic imaging for improving the imaging resolution of objects far away from the sensors.

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Yoshida, Makoto, Ichirou Ishimaru, Katsumi Ishizaki, Toshiki Yasokawa, and Yusuke Inoue. "Rotational Speed Control by Optical PWM Operation for Single Cells." Journal of Robotics and Mechatronics 18, no. 6 (2006): 824–26. http://dx.doi.org/10.20965/jrm.2006.p0824.

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To rotating single cells, we harness light pressure generated by light absorption as a rotating torque, illuminating the two proximal points from different directions using two beams. Rotational speed is controlled by optical pulse width modulation (PWM) that controls the amount of light received per unit of time by controlling the time of illumination. To change the illumination time, the pencil of rays is scanned by a galvanometric mirror.

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Chirindo, Mathews, Ettienne Cox, and Kahesh Duness. "An optical gas imaging technique based on strobed illumination." MATEC Web of Conferences 406 (2024): 08006. https://doi.org/10.1051/matecconf/202440608006.

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Gas leakage from equipment poses undesirable safety, environmental and operational impacts. Many optimal gas imaging techniques exist which detect and visualize gas plumes. However, most of these techniques struggle to produce clear images when the temperature gradient between the scene background and the gas plume is small. This paper presents an optical gas imaging technique that is based on strobed illumination, wherein the strobing frequency of the illuminating device is associated with the camera frame rate. Experimental test results are presented to show the improved detection of volatile organic compound gases during strobed illumination under dark room laboratory conditions where the percentage contrast value of the illuminated gas relative to its background varies by 50.8% The test results for the detection of sulphur hexafluoride gas and liquid petroleum gas under an outside environment are also presented.

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Pallister, David M., and Michael D. Morris. "Laser Koehler Epi-Illumination for Raman and Fluorescence Microscopic Imaging." Applied Spectroscopy 48, no. 10 (1994): 1277–81. http://dx.doi.org/10.1366/0003702944027480.

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A comparison of microscopic Raman images acquired with an optical-fiber critical (Nelson) illumination system, an optical-fiber Koehler laser illumination system, and Koehler laser illumination without an optical fiber demonstrates performance differences between the three illumination methods. Best images are obtained with optical-fiber Koehler illumination.

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Attota, Ravikiran, and Richard Silver. "Optical microscope angular illumination analysis." Optics Express 20, no. 6 (2012): 6693. http://dx.doi.org/10.1364/oe.20.006693.

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Lukic, Vladimir, Vadim A. Markel, and John C. Schotland. "Optical tomography with structured illumination." Optics Letters 34, no. 7 (2009): 983. http://dx.doi.org/10.1364/ol.34.000983.

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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 illumination of the LEDs. Results from combining different illumination wavelengths are also described demonstrating higher acquisition speed.

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Anisovich, A. G. "OPTICAL EFFECTS AT METALLIC AND NONMETALLIC MATERIALS MICROSCOPY." Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY), no. 4 (January 4, 2018): 119–25. http://dx.doi.org/10.21122/1683-6065-2017-4-119-125.

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Optical effects arising on surface defects of metals, alloys and transparent materials are discovered in conditions of various illumination such as dark-field and bright-field illumination as well as polarized light. It is shown that the methods of optical contrasting let it possible to determine surface defects of metallic and nonmetallic materials as well as defects inside optically transparent materials. The connection between optical effects and design features of lens by the use of dark-field illumination was shown. It is established that picture generation of spherical defect came about by analogy to uniaxial crystal by the study using polarized light. The schematic diagram of optical effects for various materials to make visual classification of surface defects is suggested.

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Dissertations / Theses on the topic "Optical Illumination"

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Brookshire, Charles Thomas. "Illumination Recovery For Optical Microscopy." University of Dayton / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1588936914060945.

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Kosmeier, Sebastian. "Optical eigenmodes for illumination & imaging." Thesis, University of St Andrews, 2013. http://hdl.handle.net/10023/3369.

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This thesis exploits so called “Optical Eigenmodes” (OEi) in the focal plane of an optical system. The concept of OEi is introduced and the OEi operator approach is outlined, for which quadratic measures of the light field are expressed as real eigenvalues of an Hermitian operator. As an example, the latter is employed to locally minimise the width of a focal spot. The limitations of implementing these spots with state of the art spatial beam shaping technique are explored and a selected spot with a by 40 % decreased core width is used to confocally scan an in focus pair of holes, delivering a two-point resolution enhanced by a factor of 1.3. As a second application, OEi are utilised for fullfield imaging. Therefore they are projected onto an object and for each mode a complex coupling coefficient describing the light-sample interaction is determined. The superposition of the OEi weighted with these coefficients delivers an image of the object. Compared to a point-by-point scan of the sample with the same number of probes, i.e. scanning points, the OEi image features higher spatial resolution and localisation of object features, rendering OEi imaging a compressive imaging modality. With respect to a raster scan a compression by a factor four is achieved. Compared to ghost imaging as another fullfield imaging method, 2-3 orders of magnitude less probes are required to obtain similar images. The application of OEi for imaging in transmission as well as for fluorescence and (surface enhanced) Raman spectroscopy is demonstrated. Finally, the applicability of the OEi concept for the coherent control of nanostructures is shown. For this, OEi are generated with respect to elements on a nanostructure, such as nanoantennas or nanopads. The OEi can be superimposed in order to generate an illumination of choice, for example to address one or multiple nanoelements with a defined intensity. It is shown that, compared to addressing such elements just with a focussed beam, the OEi concept reduces illumination crosstalk in addressing individual nanoelements by up to 70 %. Furthermore, a fullfield aberration correction is inherent to experimentally determined OEi, hence enabling addressing of nanoelements through turbid media.

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Appelt, Daniel. "Single-shot optical sectioning using polarised illumination coded structured illumination microscopy (picoSIM)." Thesis, King's College London (University of London), 2013. https://kclpure.kcl.ac.uk/portal/en/theses/singleshot-optical-sectioning-using-polarised-illumination-coded-structured-illumination-microscopy-picosim(825e59c9-6998-4acd-824b-7173ca670747).html.

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The conventional epi-uorescent wide-eld microscope features a uniform illumination of an extended sample region. A problem arises with this setup since light from outof-focus uorophores is also detected. The result is poor quality in the nal image, as out-of-focus structures appear blurred; furthermore, their emission light contributes to the background and leads to a reduction in image contrast. Removing out-of-focus light yields an optically sectioned image: a thin slice of a thick sample that only contains in-focus information. Taking a stack of such sectioned images allows for a three-dimensional (3D) view of the specimen. Structured illumination microscopy for sectioning (sSIM) is a method to obtain optically sectioned data, similar to that obtained from the widely used confocal microscope. However, sSIM suffers from a limited acquisition rate, as at least three individual raw images are needed to reconstruct one sectioned slice. The technique of polarised illumination coded structured illumination microscopy (picoSIM) combines optical sectioning with high temporal resolution. In picoSIM the individual light patterns needed to acquire the raw sSIM images are encoded in the polarisation of the illumination light. This enables the simultaneous acquisition of the data needed for the sSIM reconstruction, allowing optical sectioning with high acquisition rates. This thesis describes the theory of picoSIM and presents experimental results.

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KaradaglicÌ, Dejan. "Wide-field optical sectioning microscopy using structured illumination." Thesis, University of Oxford, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.404166.

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Wang, Lirong. "DESIGN, MODELING AND TESTING OF OPTICAL SURFACES IN ILLUMINATION OPTICS." Diss., The University of Arizona, 2010. http://hdl.handle.net/10150/195097.

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This dissertation investigates design, modeling and testing methods of optical surfaces in illumination optics.The main focus of this dissertation is to investigate the faceted non-imaging specular light reflector that is often used to generate a uniform, incoherent illuminance distribution. General design methodologies of faceted light reflectors are overviewed. Several design examples of faceted light reflectors including a novel LED flashlight, a novel microscope illuminator and a 20-m segmented paraboloidal solar collector are discussed and analyzed.An accurate source model is important for illumination system design. In this dissertation, an analytic short-arc source modeling method is developed and integrated in the illumination design software ZEMAX.In addition to the design and modeling work, this dissertation explores a flexible, low-cost and robust Software Configurable Optical Test System (SCOTS) for testing specular free-form surfaces that are often used in illumination systems. The application of this testing system in measuring a 3-m segmented paraboloidal solar reflector is investigated. Preliminary SCOTS test results for an F/0.2 concave automotive headlight reflector are introduced. In addition to testing the surfaces of illumination optics using SCOTS, the applications of SCOTS in the measurement of large, high precision optics are also explored and briefly discussed.

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Volcy, Jerry. "Optimum illumination for machine vision using optical scatter data." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/17548.

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Brainerd, Steve. "Off-axis illumination for extending optical microlithographic system performance /." Full text open access at:, 1993. http://content.ohsu.edu/u?/etd,185.

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Mooney, Scott William Joseph. "Coupled computations of shape, material, illumination, and optical focus." Thesis, The University of Sydney, 2017. http://hdl.handle.net/2123/17678.

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Many distinct combinations of three-dimensional shape, surface material, illumination, and optical focus can induce similar patterns of luminance gradients on the retina. The present thesis examines several conditions in which the visual system fails to correctly disentangle these physical sources of image structure, and uses these cases of misperception to assess how the visual system distinguishes diffuse shaded shape from specular reflections and defocus blur. Chapter 2 investigated how physical variations in surface reflectance can transform our perception of 3D shape, and vice versa. Increments in the specularity of a deformed planar terrain led to exaggerated percepts of its relief, particularly for surfaces with low curvature. Increments in physical relief conversely led to greater percepts of gloss for the same surfaces. Chapter 3 assessed similar misperceptions in the domain of optical defocus blur. Foreground blur induced by lens defocus was misattributed to a change in material and 3D shape when level cut contours in the background remained sharp. Conversely, fully focused images of a shaded terrain with no level cut contours were perceived as defocused. Chapter 4 tested whether the focus cues generated by level cut contours depend on their resemblance to the convex self-occluding rims of shaded surfaces. Masks that produced stronger rim-like correlations between contour orientation and shading luminance led to greater percepts of image focus and more reliable percepts of illumination direction and 3D shape, particularly when that shape appeared convex. Finally, Chapter 5 investigated how other sources of high spatial frequencies provide cues to gradient focus. Deformed shaded terrains with sharper specular reflections were perceived as more focused, but surfaces with mesostructural relief were only perceived as coherent and focused in the presence of intermediate relief scales that bridged the smooth surface deformations and fine mesostructure.

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Uthoff, Ross. "Design of a Smartphone-Camera-based Fluorescence Imaging System for the Detection of Oral Cancer." Thesis, The University of Arizona, 2015. http://hdl.handle.net/10150/593619.

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Shown is the design of the Smartphone Oral Cancer Detection System (SOCeeDS). The SOCeeDS attaches to a smartphone and utilizes its embedded imaging optics and sensors to capture images of the oral cavity to detect oral cancer. Violet illumination sources excite the oral tissues to induce fluorescence. Images are captured with the smartphone’s onboard camera. Areas where the tissues of the oral cavity are darkened signify an absence of fluorescence signal, indicating breakdown in tissue structure brought by precancerous or cancerous conditions. With this data the patient can seek further testing and diagnosis as needed. Proliferation of this device will allow communities with limited access to healthcare professionals a tool to detect cancer in its early stages, increasing the likelihood of cancer reversal.

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Lestoquoy, Guillaume. "Resolving optical illumination distributions along an axially symmetric photodetecting fiber." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/71498.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2012.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 41-43).<br>Photodetecting fibers of arbitrary length with internal metal, semiconductor and insulator domains have recently been demonstrated. These semiconductor devices display a continuous translational symmetry which presents challenges to the extraction of spatially resolved information. In this thesis, we overcome this seemingly fundamental limitation and achieve the detection and spatial localization of a single incident optical beam at sub-centimeter resolution, along a one-meter fiber section. Using an approach that breaks the axial symmetry through the constuction of a convex electrical potential along the fiber axis, we demonstrate the full reconstruction of an arbitrary rectangular optical wave profile. Finally, the localization of up to three points of illumination simultaneously incident on a photodetecting fiber is achieved.<br>by Guillaume Lestoquoy.<br>S.M.

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Books on the topic "Optical Illumination"

1

J, Svetkoff Donald, and Society of Photo-optical Instrumentation Engineers., eds. Optics, illumination, and image sensing for machine vision VI: 14-15 November 1991, Boston, Massachusetts. SPIE--the International Society for Optical Engineering, 1992.

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J, Svetkoff Donald, Automated Imaging Association, and Society of Photo-optical Instrumentation Engineers., eds. Optics, illumination, and image sensing for machine vision VIII: 8-9 September 1993, Boston, Massachusetts. SPIE--the International Society for Optical Engineering, 1994.

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J, Svetkoff Donald, Society of Photo-optical Instrumentation Engineers., and Symposium on Advances in Intelligent Systems (1990 : Boston, Mass.), eds. Optics, illumination, and image sensing for machine vision V: 8-9 November 1990, Boston, Massachusetts. SPIE--the International Society for Optical Engineering, 1991.

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4

1959-, Voelz David George, Ricklin Jennifer Crider 1960-, and Society of Photo-optical Instrumentation Engineers., eds. Free-space laser communication and active laser illumination III: 4-6 August 2003, San Diego, California, USA. SPIE, 2004.

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Gordon, Jeffrey M., and Roland Winston. Nonimaging optics: Efficient design for illumination and solar concentration VIII : 21-22 August 2011, San Diego, California, United States. Edited by SPIE (Society). SPIE, 2011.

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Weyrauch, Curtis. Fiber optic handpiece illumination systems. United States Air Force, School of Aerospace Medicine, 1989.

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7

Kirkland, Kyle. Optics: Illuminating the power of light. Facts on File, 2006.

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Ng, Eddie Kai Ho. Illuminating the local area: Towards adaptive, efficient, practical optical access networks. National Library of Canada, 2000.

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Kidger, Tina E. Illumination optics: 2-3 September 2008, Glasgow, United Kingdom. Edited by SPIE Europe, Scottish Optoelectronics Association, Europäische Forschungsgesellschaft Dünne Schichten, and SPIE (Society). SPIE, 2008.

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John, Koshel R., and Society of Photo-optical Instrumentation Engineers., eds. Design of efficient illumination systems: 4-5 August 2003, San Diego, California, USA. SPIE, 2003.

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Book chapters on the topic "Optical Illumination"

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Chen, Xin, Wenyi Wang, Meiqi Li, and Peng Xi. "Polarization Structured Illumination Microscopy." In Coded Optical Imaging. Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-39062-3_35.

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Almusaed, Amjad. "Illumination by Optical Arteries." In Biophilic and Bioclimatic Architecture. Springer London, 2010. http://dx.doi.org/10.1007/978-1-84996-534-7_26.

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Masters, Barry R. "Structured Illumination Microscopy." In Springer Series in Optical Sciences. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-21691-7_13.

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Zheng, Andreas, Hui Xie, Yanping He, Shiyuan Wei, Tong Ling, and Renjie Zhou. "Illumination-Coded Optical Diffraction Tomography." In Coded Optical Imaging. Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-39062-3_17.

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Wang, Depeng, Kekuan Wang, Feng Xing, and Diming Zhang. "Light-Field Imaging with Patterned Illumination." In Coded Optical Imaging. Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-39062-3_18.

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Stoll, Michael, Daniel Maurer, Sebastian Volz, and Andrés Bruhn. "Illumination-Aware Large Displacement Optical Flow." In Lecture Notes in Computer Science. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-78199-0_10.

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Ojeda-Castañeda, Jorge. "Optical Linear Systems Under Noncoherent Illumination." In Wavefront Shaping and Pupil Engineering. Springer Berlin Heidelberg, 2021. http://dx.doi.org/10.1007/978-3-662-63802-6_5.

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Ojeda-Castañeda, Jorge. "Optical Linear Systems Under Coherent Illumination." In Wavefront Shaping and Pupil Engineering. Springer Berlin Heidelberg, 2021. http://dx.doi.org/10.1007/978-3-662-63802-6_3.

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Müller, Thomas, Clemens Rabe, Jens Rannacher, Uwe Franke, and Rudolf Mester. "Illumination-Robust Dense Optical Flow Using Census Signatures." In Lecture Notes in Computer Science. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-23123-0_24.

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Lavagnino, Zeno, Francesca Cella Zanacchi, and Alberto Diaspro. "Role of Scattering and Nonlinear Effects in the Illumination and the Photobleaching Distribution Profiles." In Optical Fluorescence Microscopy. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-662-45849-5_4.

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Conference papers on the topic "Optical Illumination"

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Labouesse, Simon, Thomas Mangeat, Pierre Barbault, Marc Allain, Jerome Idier, and Anne Sentenac. "Pseudo Random Illumination for Live Super-Resolution Microscopy." In Computational Optical Sensing and Imaging. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cosi.2024.cf4b.2.

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Random Illumination Microscopy (RIM) requires capturing around 200 fluorescence images with speckle illuminations. Implementing Pseudo-Random Illuminations reduces this number by a factor of 10, enabling robust real-time super-resolution imaging of biological specimens. Our study explore the trade-off between the robustness and speed in pseudo-RIM.

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Licht, L., W. Eschen, C. Liu, et al. "Structured Illumination EUV Imaging." In Computational Optical Sensing and Imaging. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cosi.2024.cth1b.3.

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We present table-top EUV imaging at 13.5 nm. Using an EUV phase diffusor for generating a highly structured illumination, improves the image quality and resolution in ptychography and opens new avenues for single-shot EUV imaging.

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Wu, Jinxuan, Daoyu Li, and Zhijie Gao. "Plug-and-play illumination correction for illumination variant optical flow estimation." In Optoelectronic Imaging and Multimedia Technology XI, edited by Zhenrong Zheng and Jinli Suo. SPIE, 2024. http://dx.doi.org/10.1117/12.3036382.

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Choo, Jung Hun, Tae-Hyun Lee, Ki-Dong Lim, et al. "Optical characteristic analysis system based on directional illumination polarized imaging for next-generation optical elements." In 3D Image Acquisition and Display: Technology, Perception and Applications. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/3d.2024.jth2a.9.

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In this paper, we propose optical characteristic analysis system based on directional illumination polarized imaging for meta lenses with large aperture. The proposed analysis system for meta lenses with large aperture are implemented by combining polarization optics and the directional illumination imaging technique of ptychography, and it can be obtained the geometric phase map of meta lens with wide FOV and high-resolution. In addition, optical properties such as Zernike polynomial aberration, color aberration, and optical distortion are calculated based on the geometric phase map.

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Zhu, Yuwei, Huiyan Jiang, Zouhua Chen, and Xianlin Song. "Optimal optical design of aspheric ultrasonic probe for photoacoustic microscopy." In Illumination Optics VI, edited by Tina E. Kidger and Stuart David. SPIE, 2021. http://dx.doi.org/10.1117/12.2596679.

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Rakich, Andrew P. "Gemini North Adaptive Optics Bench optical design." In Illumination Optics VII, edited by Tina E. Kidger, Stuart David, and Thorsten Schupp. SPIE, 2024. http://dx.doi.org/10.1117/12.3022841.

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Meyer, Johannes, Thomas Längle, and Jürgen Beyerer. "Optical realization and calibration of a light field generator." In Illumination Optics V, edited by Tina E. Kidger and Stuart David. SPIE, 2018. http://dx.doi.org/10.1117/12.2314575.

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Cassarly, Bill J., Henning Rehn, and Alois Herkommer. "IODC 2017 illumination design problem: the centennial illuminator." In International Optical Design Conference 2017, edited by Richard N. Pfisterer, John R. Rogers, Julius A. Muschaweck, and Peter P. Clark. SPIE, 2017. http://dx.doi.org/10.1117/12.2293231.

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Rehn, Henning, Marcel Wäspi, Tobias Honig, and Martin Forrer. "Optical design of a variable beam angle fiber light source." In Illumination Optics VI, edited by Tina E. Kidger and Stuart David. SPIE, 2021. http://dx.doi.org/10.1117/12.2599880.

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Mazur, Iana, and Anna O. Voznesenskaya. "Modeling of free-form optical surfaces for forming required light distribution." In Illumination Optics V, edited by Tina E. Kidger and Stuart David. SPIE, 2018. http://dx.doi.org/10.1117/12.2314006.

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Reports on the topic "Optical Illumination"

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Asenath-Smith, Emily, Emma Ambrogi, Lee Moores, Stephen Newman, and Jonathon Brame. Leveraging chemical actinometry and optical radiometry to reduce uncertainty in photochemical research. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/42080.

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Subtle aspects of illumination sources and their characterization methods can introduce significant uncertainty into the data gathered from light-activated experiments, limiting their reproducibility and technology transition. Degradation kinetics of methyl orange (MO) and carbamazepine (CM) under illumination with TiO₂ were used as a case study for investigating the role of incident photon flux on photocatalytic degradation rates. Valerophenone and ferrioxalate actinometry were paired with optical radiometry in three different illumination systems: xenon arc (XE), tungsten halogen (W-H), and UV fluorescent (UV-F). Degradation rate constants for MO and CM varied similarly among the three light systems as k W-H < kiv-F < kXE, implying the same relative photon flux emission by each light. However, the apparent relative photon flux emitted by the different lights varied depending on the light characterization method. This discrepancy is shown to be caused by the spectral distribution present in light emission profiles, as well as absorption behavior of chemical actinometers and optical sensors. Data and calculations for the determination of photon flux from chemical and calibrated optical light characterization is presented, allowing us to interpret photo-degradation rate constants as a function of incident photon flux. This approach enabled the derivation of a calibrated ‘rate-flux’ metric for evaluating and translating data from photocatalysis studies.

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Weyrauch, Curtis D. Fiber Optic Handpiece Illumination Systems. Defense Technical Information Center, 1989. http://dx.doi.org/10.21236/ada207749.

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Halevy, Orna, Zipora Yablonka-Reuveni, and Israel Rozenboim. Enhancement of meat production by monochromatic light stimuli during embryogenesis: effect on muscle development and post-hatch growth. United States Department of Agriculture, 2004. http://dx.doi.org/10.32747/2004.7586471.bard.

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The original objectives were: A. To determine the critical embryonic age for monochromatic green light stimulation. B. To follow the ontogeny of embryos exposed to monochromatic green light vs. darkness. C. To investigate the effects of monochromatic green light illumination on myoblast and fiber development in the embryo. D. To investigate the stimulatory effect of light combinations during embryo and post-hatch periods on growth and meat production. E. To evaluate the direct effect of monochromatic green light on cultured embryonic and adult myoblasts. The overall purpose of this study was to investigate the effect of monochromatic light stimuli during incubation period of broilers on muscle development and satellite cell myogenesis. Based on previous studies (Halevy et al., 1998; Rozenboim et al., 1999) that demonstrated the positive effects of green-light illumination on body and muscle growth, we hypothesized that monochromatic light illumination accelerates embryo and muscle development and subsequently enhances muscle growth and meat production. Thus, further decreases management costs. Under the cooperation of the laboratories at the Hebrew University of Jerusalem and University of Washington we have conducted the following: 1. We have established the critical stage for exposure to green monochromatic light which has the maximal effect on body and muscle growth (Objective A). We report that embryonic day 5 is optimal for starting illumination. The optimal regime of lighting that will eliminate possible heat effects was evaluated by monitoring egg core temperature at various illumination periods. We found that intermitted lighting (15 min. on; 15 min. off) is optimal to avoid heat effects. 2. We have evaluated in detail gross changes in embryo development profile associated to green light stimuli vs. darkness. In addition, we have investigated the stimulatory effect of light combinations during embryo and post-hatch periods on body and muscle growth (Objective B,D). 3. We have studied the expression profile of muscle regulatory proteins during chicken muscle cell differentiation in cultures using newly developed antibodies. This study paved the way for analyzing the expression of these proteins in our photo stimulation experiments (Objective C). 4. We have studied the pattern ofPax7 expression during myogenesis in the posthatch chicken. Experimental chick pectoralis muscles as well adult myoblast cultures were used in this study and the results led us to propose a novel model for satellite cell differentiation and renewal. 5. The effects of monochromatic green light illumination during embryogenesis have been studied. These studies focused on fetal myoblast and satellite cell proliferation and differentiation at pre- and posthatch periods and on the effects on the expression of muscle regulatory proteins which are involved in these processes. In addition, we have analyzed the effect of photo stimulation in the embryo on myofiber development at early posthatch (Objective C). 6. In follow the reviewers' comments we have not conducted Objective E. The information gathered from these studies is of utmost importance both, for understanding the molecular basis of muscle development in the posthatch chicks and for applied approach for future broiler management. Therefore, the information could be beneficial to agriculture in the short term on the one hand and to future studies on chick muscle development in the embryo and posthatch on the other hand.

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Sefkow, Adam B., and Guy R. Bennett. High-efficiency high-energy Ka source for the critically-required maximum illumination of x-ray optics on Z using Z-petawatt-driven laser-breakout-afterburner accelerated ultrarelativistic electrons LDRD . Office of Scientific and Technical Information (OSTI), 2010. http://dx.doi.org/10.2172/1008132.

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CIE 245:2021 Optical Safety of Infrared Eye Trackers Applied for Extended Durations. International Commission on Illumination (CIE), 2021. http://dx.doi.org/10.25039/tr.245.2021.

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Infrared eye trackers are employed to achieve communication through gaze interaction, which is an important application of modern electro-optics and computer technology to the benefit of persons with disabilities who have major motor impairments, as well as for general use as a human-to-computer interaction device. By tracking eye movements of persons with severe motor disabilities, the individuals can interact with automated equipment through movements of their gaze. In addition to purely passive systems, which may only employ ambient lighting, more typical eye trackers employ active infrared eye-tracking techniques. However, questions have arisen with regard to the potential optical radiation hazards of using infrared eye trackers for the much-extended durations of 10 to 12 hours each day for a lifetime. Conventional eye trackers employed in the research setting would rarely be used for more than an hour. Several exposure guidelines exist today, but the question has arisen whether the chronic nature of exposure for such an infrared illuminator for assistive devices falls outside the assumed conditions of daily exposure. This technical report explores the basis of the current human exposure guidelines, their scientific basis and underlying assumptions in order to determine the direct applicability of these guidelines to this application. It is found that the most limiting exposure criterion is the infrared exposure limit to protect against delayed changes in the crystalline lens of the eye. The Technical Committee also examined some representative eye trackers and found that the day-long average exposure in these typical examples of current technology did not exceed that criterion.

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