Optical transformer for small light sources

    公开(公告)号:US06646813B2

    公开(公告)日:2003-11-11

    申请号:US10028662

    申请日:2001-12-21

    IPC分类号: G02B2730

    摘要: Optical transformer devices described herein provide a variety of area output patterns from a small light source (21). A light ejector (24) is described for transversely ejecting light injected by a light source, including a plurality of partially reflective interfaces (41) arranged along a central axis (28), the interfaces arranged so that light injected by the light source travels through each of the interfaces, the reflected light providing an area light output of the light reflected. The interfaces may utilize Fresnel reflectance or may comprise metallic or dielectric coatings. A variety of embodiments are described, such as a cylindrical configuration, a rectangular block configuration, or an N-sided polygonal configuration. In some embodiments a turning reflector (132) and polarization retarder (131) are provided to reverse the direction of light and rotate polarization on the side opposite the light source. In one embodiment, a stripe ejector (470) can be used to illuminate an LCD display.

    Etendue-squeezing illumination optics
    3.
    发明授权
    Etendue-squeezing illumination optics 有权
    Etendue挤压照明光学器件

    公开(公告)号:US07347599B2

    公开(公告)日:2008-03-25

    申请号:US11040506

    申请日:2005-01-21

    IPC分类号: F21V9/00

    摘要: In some embodiments, an apparatus for use generating illumination is provided that comprises a reflective base, a first light source positioned proximate the reflective base, and a reimaging reflector positioned partially about the first light source, where a percentage of light emitted from the first light source is reflected from the reimaging reflector to the reflective base adjacent the first light source establishing a first real image. The reimaging reflector can further comprise a first sector of a first ellipsoid and a second sector of a second ellipsoid, where the first and second sectors establish the first and a second real image. Further embodiments provide a lens that includes a reimaging reflector that receives light and reflects the light establishing a first real image. The reimaging reflector can further comprise a plurality of sectors that reflect light to establish first and second real images.

    摘要翻译: 在一些实施例中,提供了一种用于产生照明的设备,其包括反射底座,靠近反射底座定位的第一光源和部分地围绕第一光源定位的重建成像反射器,其中从第一光发射的光的百分比 源从再成像反射器反射到邻近第一光源的反射基底,建立第一实像。 再成像反射器还可以包括第一椭球的第一扇区和第二椭球的第二扇区,其中第一扇区和第二扇区建立第一和第二实像。 另外的实施例提供一种透镜,其包括接收光并反射建立第一实像的光的再成像反射器。 再成像反射器还可以包括反射光以建立第一和第二实像的多个扇区。

    Passive electro-optical tracker
    5.
    发明授权
    Passive electro-optical tracker 失效
    被动电光跟踪器

    公开(公告)号:US08355536B2

    公开(公告)日:2013-01-15

    申请号:US12709780

    申请日:2010-02-22

    IPC分类号: G06K9/00

    摘要: A passive electro-optical tracker uses a two-band IR intensity ratio to discriminate high-speed projectiles and obtain a speed estimate from their temperature, as well as determining the trajectory back to the source of fire. In an omnidirectional system a hemispheric imager with an MWIR spectrum splitter forms two CCD images of the environment. Three methods are given to determine the azimuth and range of a projectile, one for clear atmospheric conditions and two for nonhomogeneous atmospheric conditions. The first approach uses the relative intensity of the image of the projectile on the pixels of a CCD camera to determine the azimuthal angle of trajectory with respect to the ground, and its range. The second calculates this angle using a different algorithm. The third uses a least squares optimization over multiple frames based on a triangle representation of the smeared image to yield a real-time trajectory estimate.

    摘要翻译: 无源电光跟踪器使用双波段IR强度比来区分高速射弹,并从其温度获得速度估计,以及确定回到火源的轨迹。 在全向系统中,具有MWIR光谱分配器的半球成像器形成环境的两个CCD图像。 给出三种方法来确定射弹的方位角和范围,一种用于清晰的大气条件,另外两种用于非均匀大气条件。 第一种方法使用射弹图像的相对强度对CCD相机的像素来确定轨迹相对于地面的方位角及其范围。 第二个使用不同的算法来计算该角度。 第三个使用基于模糊图像的三角形表示的多个帧的最小二乘优化来产生实时轨迹估计。

    Passive Electro-Optical Tracker
    6.
    发明申请
    Passive Electro-Optical Tracker 失效
    被动电光跟踪器

    公开(公告)号:US20100278387A1

    公开(公告)日:2010-11-04

    申请号:US12709780

    申请日:2010-02-22

    IPC分类号: G06K9/00

    摘要: A passive electro-optical tracker uses a two-band IR intensity ratio to discriminate high-speed projectiles and obtain a speed estimate from their temperature, as well as determining the trajectory back to the source of fire. In an omnidirectional system a hemispheric imager with an MWIR spectrum splitter forms two CCD images of the environment. Three methods are given to determine the azimuth and range of a projectile, one for clear atmospheric conditions and two for nonhomogeneous atmospheric conditions. The first approach uses the relative intensity of the image of the projectile on the pixels of a CCD camera to determine the azimuthal angle of trajectory with respect to the ground, and its range. The second calculates this angle using a different algorithm. The third uses a least squares optimization over multiple frames based on a triangle representation of the smeared image to yield a real-time trajectory estimate.

    摘要翻译: 无源电光跟踪器使用双波段IR强度比来区分高速射弹,并从其温度获得速度估计,以及确定回到火源的轨迹。 在全向系统中,具有MWIR光谱分配器的半球成像器形成环境的两个CCD图像。 给出三种方法来确定射弹的方位角和范围,一种用于清晰的大气条件,另外两种用于非均匀大气条件。 第一种方法使用射弹图像的相对强度对CCD相机的像素来确定轨迹相对于地面的方位角及其范围。 第二个使用不同的算法来计算该角度。 第三个使用基于模糊图像的三角形表示的多个帧的最小二乘优化来产生实时轨迹估计。

    Etendue-squeezing illumination optics
    9.
    发明申请
    Etendue-squeezing illumination optics 有权
    Etendue挤压照明光学器件

    公开(公告)号:US20050088758A1

    公开(公告)日:2005-04-28

    申请号:US10772088

    申请日:2004-02-03

    摘要: In some embodiments, an apparatus for use generating illumination is provided that comprises a reflective base, a first light source positioned proximate the reflective base, and a reimaging reflector positioned partially about the first light source, where a percentage of light emitted from the first light source is reflected from the reimaging reflector to the reflective base adjacent the first light source establishing a first real image. The reimaging reflector can further comprise a first sector of a first ellipsoid and a second sector of a second ellipsoid, where the first and second sectors establish the first and a second real image. Further embodiments provide a lens that includes a reimaging reflector that receives light and reflects the light establishing a first real image. The reimaging reflector can further comprise a plurality of sectors that reflect light to establish first and second real images.

    摘要翻译: 在一些实施例中,提供了一种用于产生照明的设备,其包括反射底座,靠近反射底座定位的第一光源和部分地围绕第一光源定位的重建成像反射器,其中从第一光发射的光的百分比 源从再成像反射器反射到邻近第一光源的反射基底,建立第一实像。 再成像反射器还可以包括第一椭球的第一扇区和第二椭球的第二扇区,其中第一扇区和第二扇区建立第一和第二实像。 另外的实施例提供一种透镜,其包括接收光并反射建立第一实像的光的再成像反射器。 再成像反射器还可以包括反射光以建立第一和第二实像的多个扇区。