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1. 发明申请

US20220128222A1 OPTICAL ELEMENT FOR IMPROVING BEAM QUALITY AND LIGHT COUPLING EFFICIENCY 有权
公开(公告)号：US20220128222A1
公开(公告)日：2022-04-28
申请号：US17551073
申请日：2021-12-14
申请人： Amir Lotfi , David Kessler
发明人： Amir Lotfi , David Kessler
IPC分类号： F21V7/00 , F21V5/04 , G02B19/00 , H01L33/60
摘要： A hybrid optic includes a folded optical element with an outer reflective surface, an output surface, and a hollow core comprising a sidewall, a core output surface, and a core input opening through which light emitted by a light source enters the hollow core. A reflector element, coupled to the folded optical element, receives light from the light source, reflects a portion of the light into the hollow core and directly transmits the remaining portion of the light into the hollow core. To reduce the appearance of non-uniformities in the output light, the reflector element is diffuse and white, portions of the folded optical element are diffusely reflective, and/or a glare control diffuser is disposed on the output surface to disperse light transmitted through the core output surface of the hollow core. In this manner, the light coupling efficiency of the hybrid optic is enhanced without producing structured light.

2. 发明授权

US11156817B2 Scanning microscope with enhanced FOV and NA 有权
公开(公告)号：US11156817B2
公开(公告)日：2021-10-26
申请号：US16528877
申请日：2019-08-01
申请人： David Kessler
发明人： David Kessler
IPC分类号： G02B21/00
摘要： A scanning microscope apparatus has a laser light to generate a beam at an excitation wavelength. A beam expander enlarges the beam width and forms a collimated beam, scanned in a raster pattern. A catadioptric objective has a curved partially transmissive mirror surface symmetric about an optical axis and disposed to focus a portion of the received scanned collimated beam toward a focal plane at the sample, wherein the mirror surface has a center of curvature either at an axis of rotation of the scanner or at an image of the axis of rotation. A reflective polarizer cooperates with the curved mirror to direct the focused light toward the sample. One or more polarization retarders condition excitation light conveyed toward and away from the curved mirror. A beam splitter separates the generated laser light from a signal and directs the signal toward a detector.

3. 发明申请

US20200232624A1 FOLDED OPTICS METHODS AND APPARATUS FOR IMPROVING EFFICIENCY OF LED-BASED LUMINAIRES 审中-公开
公开(公告)号：US20200232624A1
公开(公告)日：2020-07-23
申请号：US16831322
申请日：2020-03-26
申请人： Amir Lotfi , Benjamin Pin-Chun Chen , David Kessler
发明人： Amir Lotfi , Benjamin Pin-Chun Chen , David Kessler
IPC分类号： F21V7/04 , F21V7/00 , F21V5/00 , F21V5/04 , F21V7/28 , G02B19/00 , G02B3/04 , G02B1/14
摘要： A hybrid lens collimates light emitted by a light source via refraction and reflection. A folded optic element of the lens comprises an outer reflective surface, a lens output surface, and a hollow core comprising a sidewall having a curved profile, a core output boundary, and a core input opening through which the light emitted by the light source enters the hollow core. A reflector of the lens receives the light emitted by the light source, reflects a first portion of the light into the hollow core of the folded optic element, and directly transmits a second portion of the light into the hollow core without reflection by the reflector. In one example, the lens output surface has a diameter of 65 millimeters, the lens has a thickness (between the light source and the lens output surface) of about 13.5 millimeters and provides substantially collimated light with a beam divergence angle of 12 degrees or less.

4. 发明申请

US20200049967A1 SCANNING MICROSCOPE WITH ENHANCED FOV AND NA 审中-公开
公开(公告)号：US20200049967A1
公开(公告)日：2020-02-13
申请号：US16528877
申请日：2019-08-01
申请人： David Kessler
发明人： David Kessler
IPC分类号： G02B21/00
摘要： A scanning microscope apparatus has a laser light to generate a beam at an excitation wavelength. A beam expander enlarges the beam width and forms a collimated beam, scanned in a raster pattern. A catadioptric objective has a curved partially transmissive mirror surface symmetric about an optical axis and disposed to focus a portion of the received scanned collimated beam toward a focal plane at the sample, wherein the mirror surface has a center of curvature either at an axis of rotation of the scanner or at an image of the axis of rotation. A reflective polarizer cooperates with the curved mirror to direct the focused light toward the sample. One or more polarization retarders condition excitation light conveyed toward and away from the curved mirror. A beam splitter separates the generated laser light from a signal and directs the signal toward a detector.

5. 发明申请

US20120307328A1 AFOCAL BEAM RELAY 有权
标题翻译： AFOCAL BEAM继电器
公开(公告)号：US20120307328A1
公开(公告)日：2012-12-06
申请号：US13586965
申请日：2012-08-16
申请人： David Kessler
发明人： David Kessler
IPC分类号： G02B26/10 , G02B17/08 , G02B17/06 , G02B17/00
CPC分类号： G02B26/105 , G02B17/008 , G02B17/0615
摘要： An afocal beam relay has first and second primary concave reflective surfaces and first and second secondary convex toroidal reflective surfaces. The centers of curvature of each of the first and second primary reflective surfaces and first and second secondary reflective surfaces lie on an axis. The first and second secondary convex reflective surfaces face toward the first and second primary concave reflective surfaces and are disposed to relay a decentered entrance pupil to a decentered exit pupil. An aspheric corrector element is disposed in the path of an input beam of light that is directed by the primary and secondary surfaces to the decentered entrance pupil. The directed beam of light between the first and second secondary convex mirrors is collimated in one direction and focused in mid air in an orthogonal direction.
摘要翻译：无焦束继电器具有第一和第二初级凹面反射表面和第一和第二副凸面环形反射表面。第一和第二主反射表面和第一和第二辅助反射表面中的每一个的曲率中心位于轴上。第一和第二次级凸起的反射表面朝向第一和第二初级凹面反射表面，并且被设置成将偏心入射光瞳中继到偏心的出射光瞳。非球面校正元件设置在由主表面和次表面指向偏心入射光瞳的输入光束的路径中。第一和第二次级凸面镜之间的定向光束在一个方向上被准直并且在正交方向的中空中聚焦。

6. 发明授权

US08274720B2 Concentric afocal beam relay 有权
标题翻译：同心无焦束继电器
公开(公告)号：US08274720B2
公开(公告)日：2012-09-25
申请号：US12611320
申请日：2009-11-03
申请人： David Kessler
发明人： David Kessler
IPC分类号： G02B26/08 , G02B17/00
CPC分类号： G02B26/105 , G02B17/008 , G02B17/0615
摘要： An afocal beam relay has a concave reflective surface having a first center of curvature and a first vertex that define an optical axis. A convex reflective surface has a second center of curvature that is substantially coincident with the first center of curvature and a second vertex that lies along the optical axis. The convex reflective surface faces toward the concave reflective surface to relay a decentered entrance pupil to a decentered exit pupil. An aspheric corrector element is disposed in the path of input light that is directed to the decentered entrance pupil and has correction values that are substantially centered on the first center of curvature.
摘要翻译：无焦束继电器具有具有第一曲率中心的凹面反射表面和限定光轴的第一顶点。凸起的反射表面具有基本上与第一曲率中心重合的第二曲率中心和位于光轴上的第二顶点。凸起的反射表面面向凹形反射表面以将偏心入射光瞳中继到偏心的出射光瞳。非球面校正元件设置在被输入偏心入射光瞳的输入光的路径中，并且具有基本上以第一曲率中心为中心的校正值。

7. 发明授权

US07414784B2 Low fill factor wire grid polarizer and method of use 有权
标题翻译：低填充因数线栅偏振器和使用方法
公开(公告)号：US07414784B2
公开(公告)日：2008-08-19
申请号：US10948345
申请日：2004-09-23
申请人： Xiang-Dong Mi , David Kessler , Lee W. Tutt , Laura A. Weller-Brophy
发明人： Xiang-Dong Mi , David Kessler , Lee W. Tutt , Laura A. Weller-Brophy
IPC分类号： G02B5/30
CPC分类号： G02B5/3058 , G02F1/133528
摘要： In an example embodiment, a wire grid polarizer includes a plurality of parallel conductors having a pitch (P), a width (W), and a height (H). In example embodiments, a fill-factor (W/P) is greater than approximately 0.18 and less than approximately 0.25. In another example embodiment, a display system includes a light source and a light-valve. The display system also includes a wire grid polarizer that includes a plurality of parallel conductors having a pitch (P), a width (W), and a height (H). In example embodiments, a fill-factor (W/P) is greater than approximately 0.18 and less than approximately 0.25.
摘要翻译：在示例性实施例中，线栅偏振器包括具有间距（P），宽度（W）和高度（H）的多个平行导体。在示例性实施例中，填充因子（W / P）大于约0.18且小于约0.25。在另一示例性实施例中，显示系统包括光源和光阀。显示系统还包括线栅偏振器，其包括具有间距（P），宽度（W）和高度（H）的多个平行导体。在示例性实施例中，填充因子（W / P）大于约0.18且小于约0.25。

8. 发明授权

US07296894B2 Fundus camera having scanned illumination and pupil tracking 失效
标题翻译：眼底照相机具有扫描照明和瞳孔跟踪
公开(公告)号：US07296894B2
公开(公告)日：2007-11-20
申请号：US10947018
申请日：2004-09-22
申请人： Rongguang Liang , David Kessler
发明人： Rongguang Liang , David Kessler
IPC分类号： A61B3/14
CPC分类号： A61B3/12 , A61B3/15
摘要： An apparatus (100) for obtaining an image of the eye, has an alignment section (160) for aligning the pupil of the eye along an optical axis and a pupil sensor (170) for identifying pupil location and dimensions. An illumination section (112) has a light source (114) for providing an illumination beam and a spatial light modulator (125) for positioning and shaping the illumination beam according to the sensed location and dimensions of the pupil. An illumination beam partitioning mechanism (50) segments the illumination beam directed toward the pupil of the eye into at least one light-bearing segment (150) and at least one blocked segment. An actuator (132) coupled to the illumination beam partitioning mechanism (50) scans the at least one light-bearing segment (150) of the illumination beam across the pupil of the eye. An image sensor (146), aligned along the optical axis, obtains reflected light from the eye.
摘要翻译：一种用于获得眼睛图像的装置（100）具有用于使眼睛的光瞳沿光轴对准的对准部（160）和用于识别瞳孔位置和尺寸的瞳孔传感器（170）。照明部分（112）具有用于提供照明光束的光源（114）和用于根据感测到的光瞳位置和尺寸来定位和成形照明光束的空间光调制器（125）。照明光束分隔机构（50）将朝向眼睛的瞳孔的照明光束分成至少一个光轴承部分（150）和至少一个阻挡部分。耦合到照明光束分隔机构（50）的致动器（132）扫描穿过眼睛的瞳孔的照明束的至少一个光轴承段（150）。沿着光轴排列的图像传感器（146）获得来自眼睛的反射光。

9. 发明申请

US20070091613A1 BACKLIGHT USING SURFACE-EMITTING LIGHT SOURCES 有权
标题翻译：背光使用表面发光光源
公开(公告)号：US20070091613A1
公开(公告)日：2007-04-26
申请号：US11255909
申请日：2005-10-21
申请人： Junwon Lee , David Kessler , Xiang-Dong Mi
发明人： Junwon Lee , David Kessler , Xiang-Dong Mi
IPC分类号： F21V13/00
CPC分类号： G02F1/133602 , G02F1/133603 , G02F1/133611 , G02F2001/133507 , G02F2001/133607
摘要： A lighting apparatus for providing illumination, comprising: a) an array of surface-emitting light sources, wherein each surface-emitting light source directs a source illumination beam, over a beam angle θ, toward an illumination plane; b) an array of beam spreading optical elements corresponding with the array of surface-emitting light sources, wherein refraction of the source illumination beam by each beam spreading optical element substantially satisfies a distribution function: dy/dθ=ƒ(θ) wherein y is a radial distance along the illumination plane from the optical axis of the beam-spreading optical element, dy is an arbitrarily small increment of the radial distance, dθ is the angular increment of the beam angle corresponding to dy, and ƒ(θ) is the distribution function for the angular distribution of the light source, such that each beam spreading optical element adjusts the luminous intensity of the source illumination beam from the corresponding surface-emitting light source to provide a uniformized illumination beam directed toward the illumination plane; and, c) an array of beam-divergence reducing lens elements, wherein each beam-divergence reducing lens element reduces the angular divergence of a corresponding uniformized illumination beam, providing illumination having improved uniformity and reduced beam divergence thereby.
摘要翻译：一种用于提供照明的照明装置，包括：a）表面发射光源的阵列，其中每个表面发射光源将束照射光束在束角θ上朝向照明平面引导; b）与表面发射光源阵列相对应的光束扩展光学元件的阵列，其中由每个光束扩展光学元件的源照射光束的折射基本上满足分布函数：<？in-line-formula description =“In 线=公式“end =”lead“？> dy / dtheta = f（theta）<？in-line-formula description =”In-line Formulas“end =”tail“？>其中y是沿着照明的径向距离平面从光束扩展光学元件的光轴，dy是径向距离的任意小的增量，dta是对应于dy的光束角的角增量，f（θ）是角分布的分布函数使得每个光束扩展光学元件调节来自相应的表面发射光源的源照射光束的发光强度，以提供指向照明平面的均匀照明光束; 以及c）光束发散减少透镜元件的阵列，其中每个光束发散减小透镜元件减小对应的均匀照明光束的角度发散，从而提供具有改善的均匀性并且由此减小光束发散的照明。

10. 发明授权

US07198373B2 Display apparatus using LCD panel 失效
标题翻译：使用LCD面板的显示设备
公开(公告)号：US07198373B2
公开(公告)日：2007-04-03
申请号：US11120331
申请日：2005-05-03
申请人： Barry D. Silverstein , Joshua M. Cobb , David Kessler
发明人： Barry D. Silverstein , Joshua M. Cobb , David Kessler
IPC分类号： G03B21/14
CPC分类号： G02B27/149 , G02B27/1046 , G02B27/1053 , G02B27/123 , H04N9/3105 , H04N9/3117 , H04N9/315
摘要： A projection apparatus (10) has an illumination section (68) that provides at least a first, a second, and a third component wavelength illumination. At least two component wavelength modulating sections accept and modulate the component wavelength illumination to provide a modulated component wavelength beam. Each component wavelength modulating section has a portion of a monochrome transmissive liquid crystal modulator panel (118) that has been segmented into at least a first, a second, and a third spatially separate portion. A component wavelength polarizer directs substantially polarized light to the corresponding portion of the monochrome transmissive liquid crystal modulator panel. An illumination path Fresnel lens focuses incident illumination from the component wavelength polarizer through the corresponding portion of the monochrome transmissive liquid crystal modulator panel. An analyzer conditions the polarization of the modulated component wavelength beam. A lens forms an image of superimposed component wavelength beams for projection onto a display surface (40).
摘要翻译：投影装置（10）具有提供至少第一，第二和第三分量波长照明的照明部分（68）。至少两个分量波长调制部分接受和调制分量波长照明以提供调制分量波长光束。每个分量波长调制部分具有分割成至少第一，第二和第三空间分离部分的单色透射型液晶调制器面板（118）的一部分。分量波长偏振器将大致偏振光引导到单色透射型液晶调制器面板的对应部分。照明路径菲涅尔透镜将来自分量波长偏振器的入射照明聚焦到单色透射型液晶调制器面板的相应部分。分析仪调节调制分量波长光束的极化。 A透镜形成用于投影到显示表面（40）上的叠加分量波长束的图像。

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