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    Laser homogenizing and beam shaping illumination optical system and method
    23.
    发明授权
    Laser homogenizing and beam shaping illumination optical system and method 有权

    公开(公告)号：US10795169B2

    公开(公告)日：2020-10-06

    申请号：US16709414

    申请日：2019-12-10

    Applicant: Palo Alto Research Center Incorporated

    Inventor： Patrick Y. Maeda ,  David K. Biegelsen

    IPC: G02B27/09 ,  G02B6/02 ,  G02B6/24 ,  F21V8/00 ,  G02B26/08

    Abstract: An illuminator optical system combines, homogenizes, and shapes light spatially and angularly from one or more high power fiber coupled lasers. It may include a multichannel fiber cable, collimation and beam shaping optics, a multiple lens array (e.g., fly's eye lens array), and an objective lens. The multichannel fiber collects the light from the high power fiber coupled lasers and produces an aligned array of one or more optical fibers at the output of the cable. The light output from the cable is collimated and relayed to a multiple lens array that spatially divides and shapes the light into an array of beams. The objective lens homogenizes the light by collimating and overlapping the beams into a uniform top hat irradiance distribution in at least one dimension, resulting in the illumination pattern having the required spatial size and desired angular distribution at the illumination plane.

    Illumination optical system for laser line generator
    24.
    发明授权
    Illumination optical system for laser line generator 有权

    公开(公告)号：US10042145B2

    公开(公告)日：2018-08-07

    申请号：US15400848

    申请日：2017-01-06

    Applicant: PALO ALTO RESEARCH CENTER INCORPORATED

    Inventor： Patrick Y. Maeda ,  Timothy D. Stowe

    IPC: G02B26/08 ,  G02B17/00 ,  G02B27/30 ,  G02B27/14 ,  G02B27/10 ,  F21V8/00 ,  G03G15/04

    Abstract: High resolution printing systems that utilize high power laser diode bars and digital mirror devices (DMD) require side-by-side stacking of illumination modules to stitching of the image from each module to form a longer total image width. An inline illumination optical system having a refractive prism and Total Internal Reflection (TIR) prism pair with an air gap along with a light guide transporting light beams at a compound angle to the prism pair eliminates the need for any axial rotation of the laser and light guide, and enables side-by-side module stacking. The illumination optical system includes an illumination module having a light source, the light guide, a DMD array and a Refractive TIR (RTIR) prism. The system also includes a DMD housing containing the DMD array and having a width within which the illumination module is confined to allow side-by-side stacking.

    INTEGRATED UV DISINFECTION
    25.
    发明申请
    INTEGRATED UV DISINFECTION 有权

    公开(公告)号：US20220152233A1

    公开(公告)日：2022-05-19

    申请号：US16952320

    申请日：2020-11-19

    Applicant: Palo Alto Research Center Incorporated

    Inventor： Thomas Wunderer ,  Joerg Martini ,  Patrick Y. Maeda ,  Barbara Cromarty ,  Paloma Fautley

    IPC: A61L2/10 ,  A61L2/24 ,  A61L2/26

    Abstract: Methods and systems for disinfecting a surface, can include a light source, and a transparent window located above the light source. The light source can be integrated into an object, and an outer surface of the object can be located above the transparent window. Light from the light source can irradiate the outer surface through the transparent window and from within the object to disinfect the outer surface of the object. The light can comprise violet and ultraviolet (UV) light. A photocatalytic layer comprising a photocatalytic material may also be located above the transparent window and below the outer surface.

    IN-LINE STITCHED IMAGE OPTICAL SYSTEM ARCHITECTURE FOR GLV LASER LINE IMAGERS
    26.
    发明申请
    IN-LINE STITCHED IMAGE OPTICAL SYSTEM ARCHITECTURE FOR GLV LASER LINE IMAGERS 有权

    公开(公告)号：US20220011566A1

    公开(公告)日：2022-01-13

    申请号：US16923881

    申请日：2020-07-08

    Applicant: Palo Alto Research Center Incorporated

    Inventor： Patrick Y. Maeda

    IPC: G02B26/08 ,  B41J2/465 ,  G02B27/18 ,  H04N9/31

    Abstract: An optical imager system and method of operating the optical imager system, can include one or more imager modules including a laser light source, a collimator, an illumination optical system, a grating light valve, a spatial light modulator and a projection optical system. A group of imager modules can include the one or more imager modules. The group of imager modules is operable in a stacked arrangement to produce an image from in-line stitching of individual images generated by the one or more imager modules. The illumination optical system can homogenize, shape, and direct a beam from the laser light source onto the grating light valve, and homogenization can occur in a cross-process direction.

    Light Guide Based Optical System For Laser Line Generator
    29.
    发明申请
    Light Guide Based Optical System For Laser Line Generator 有权
    用于激光线发生器的光导光学系统

    公开(公告)号：US20160091647A1

    公开(公告)日：2016-03-31

    申请号：US14500902

    申请日：2014-09-29

    Applicant: Palo Alto Research Center Incorporated

    Inventor： Patrick Y. Maeda ,  Timothy David Stowe

    IPC: F21V8/00 ,  G02B23/02 ,  H01S5/40

    CPC classification number: G02B6/005 ,  G02B6/0068 ,  G02B23/02 ,  G02B27/0905 ,  G02B27/0994 ,  H01S5/4025

    Abstract: A laser line generator system that utilizes a light guide element to convert high energy coherent light generated by a high fill-factor laser diode bar into homogenous light, and utilizes one or more slow-axis relay lenses to image the homogenous light such that it forms a homogenous line illumination pattern on an illumination plane. The light guide utilizes parallel or down-tapered side walls to mix received coherent light in the slow-axis direction by way of total internal reflection. A Keplerian telescope including two cylinder lenses is optionally used in place of the slow-axis relay lens. Optional fast-axis lenses are used to assist in focusing the homogenous light at the illumination plane. The laser light generator forms, e.g., a single-pass imaging system for a scanning/printing apparatus in which the homogenous line illumination pattern is directed onto a linearly arranged series of spatial light modulators, such as Digital Micromirror Devices (DMDs).

    Abstract translation: 一种激光线发生器系统，其利用光导元件将由高填充因子激光二极管棒产生的高能相干光转换成均匀的光，并且利用一个或多个慢轴中继透镜来对均匀光进行成像，使得其形成 照明平面上的均匀线照明图案。 光导采用平行或下降锥形的侧壁，通过全内反射来混合慢轴方向的接收的相干光。 可选地使用包括两个柱面透镜的开普勒式望远镜代替慢轴中继透镜。 可选的快轴透镜用于帮助在照明平面上聚焦均匀的光。 激光发生器形成例如用于扫描/打印设备的单遍成像系统，其中均匀线照明图案被引导到线性排列的空间光调制器系列，例如数字微镜器件（DMD）。

    VCSEL-Based Variable Image Optical Line Generator
    30.
    发明申请
    VCSEL-Based Variable Image Optical Line Generator 有权
    基于VCSEL的可变图像光线路发生器

    公开(公告)号：US20150273863A1

    公开(公告)日：2015-10-01

    申请号：US14681957

    申请日：2015-04-08

    Applicant: Palo Alto Research Center Incorporated

    Inventor： Timothy David Stowe ,  David K. Biegelsen ,  Patrick Y. Maeda ,  Christopher L. Chua

    IPC: B41J2/47 ,  B41J2/44

    CPC classification number: B41J2/451 ,  B41J2/44 ,  B41J2/455 ,  B41J2/465 ,  B41J2/47 ,  G02B13/22 ,  G02B26/0833 ,  G02B27/20

    Abstract: A single-pass imaging system utilizes a two-dimensional (2D) light field generator (e.g., one or more VCSEL devices) to generate a modulated two-dimensional modulated light field in accordance with image data for a single row of pixels, and an anamorphic optical system that concentrates the two-dimensional modulated light field in a process direction such that a one-dimensional scan line image extending in a cross-process direction is generated on an imaging surface. The VCSEL array is configured using a scan line image data group made up of pixel image data portions, with associated groups of light emitting elements aligned in the process direction being configured by each pixel image data portion. Gray scaling is achieved either by turning on some of the light emitting elements of the associated group, or by turning the light emitting elements of the associated group partially on, e.g. using a common drive current.

    Abstract translation: 单通道成像系统利用二维（2D）光场发生器（例如，一个或多个VCSEL装置）根据单行像素的图像数据产生经调制的二维调制光场，并且 变形光学系统，其将二维调制光场集中在处理方向上，使得在成像表面上产生在交叉处理方向上延伸的一维扫描线图像。 使用由像素图像数据部分构成的扫描线图像数据组来配置VCSEL阵列，其中由处理方向对准的相关联的发光元件组由每个像素图像数据部分配置。 通过打开相关联的组的一些发光元件，或者通过使相关联的组的发光元件部分地接通来实现灰度比例。 使用公共驱动电流。

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