Directional diffusing screen with suppressed zero-order light
    1.
    发明授权
    Directional diffusing screen with suppressed zero-order light 失效
    定向扩散屏幕,抑制零级光

    公开(公告)号:US4586780A

    公开(公告)日:1986-05-06

    申请号:US403944

    申请日:1982-07-30

    摘要: Optical assembly (34) has a transmission holographic optical element (46) which refracts the incoming ray (38) at an angle through the angularly oriented fiber (56) in fiber optic faceplate (48). Holographic optical element (50) refracts the ray (66) to become ray (44) toward a viewing pupil. The zero-order light from holographic optical element (46) is absorbed as ray (68) in the fiber optic faceplate. The zero-order light represented by ray (76) is absorbed in the holographic optical element (50). Holographic optical element (50) preferably forms a diffused viewing pupil for inspection of the light by the user.

    摘要翻译: 光学组件(34)具有透射全息光学元件(46),其通过光纤面板(48)中的角度定向的光纤(56)以一定角度折射入射光线(38)。 全息光学元件(50)将光线(66)折射成朝向观察瞳孔的光线(44)。 来自全息光学元件(46)的零级光在光纤面板中作为射线(68)被吸收。 由光线(76)表示的零级光被全息光学元件(50)吸收。 全息光学元件(50)优选地形成用于由用户检查光的扩散的观察光瞳。

    Color filter and color picture display device using the same
    2.
    发明授权
    Color filter and color picture display device using the same 失效
    彩色滤镜和彩色图像显示装置使用相同

    公开(公告)号:US6141124A

    公开(公告)日:2000-10-31

    申请号:US956957

    申请日:1997-10-23

    IPC分类号: G02B5/20 G02B5/32 G02F1/1335

    CPC分类号: G02B5/203 G02B5/201

    摘要: A color filter which, in a reflection type color picture projector using a polarized light component as a projection light, improve the utilization factor of light and a color picture display device using the same color filter are provided. The color filter 3 using a transmission type hologram diffracts and spectroscopically separates P polarized light components related to respective primary colors and condenses them to pixel electrodes 13r, 13g, and 13b on the side of an LCD panel 1. A reflection light which is modulated by an optical modulator 16 on the side of the LCD panel 1 and becomes S polarized light component is incident on the color filter 3. The color filter 3 transmits the S polarized light component and uses it as the projection light. Since the color filter 3 can diffract a P polarized light component at diffraction efficiency of about 100% while restricting the diffraction efficiency of S polarized light component to about 3%, which is substantially advantageous compared with diffraction of S polarized light component, the utilization factor of light can be improved

    摘要翻译: 提供了使用偏振光分量作为投影光的反射型彩色图像投影仪提高光的利用率的彩色滤光器和使用相同滤色器的彩色图像显示装置。 使用透射型全息图的滤色器3衍射并分光分离与各原色相关的P偏振光分量,并将其冷凝到LCD面板1侧的像素电极13r,13g和13b。由... 在LCD面板1一侧并变成S偏振光分量的光调制器16入射到滤色器3上。滤色器3透射S偏振光分量并将其用作投影光。 由于滤色器3可以以约100%的衍射效率衍射P偏振光分量,同时将S偏振光分量的衍射效率限制为约3%,这与S偏振光分量的衍射相比是有利的,因此利用因子 的光线可以改善

    Diffraction optics diffusing screen
    4.
    发明授权
    Diffraction optics diffusing screen 失效
    衍射光学散射屏

    公开(公告)号:US4586781A

    公开(公告)日:1986-05-06

    申请号:US403945

    申请日:1982-07-30

    CPC分类号: G02B5/32

    摘要: Optical apparatus (48) includes the holographic optical element (16) which diffracts the incoming ray (15) in a diffuse cone toward a viewing pupil and at an angle parallel to the axis of fiber optic faceplate (48) so the central ray (17) of the diffused cone passes through optical fiber (54) toward the viewing pupil. This permits the zero-order undiffracted light in ray (25) to be absorbed in the fiber optic faceplate (48).

    摘要翻译: 光学设备(48)包括全息光学元件(16),其将漫射锥体(15)以观察光瞳衍射并且以平行于光纤面板(48)的轴线的角度衍射,从而使中心射线(17) )通过光纤(54)朝向观察瞳孔。 这允许光线(25)中的零级未衍射光在光纤面板(48)中被吸收。

    Fiber optic light traps for electro-optical display devices
    6.
    发明授权
    Fiber optic light traps for electro-optical display devices 失效
    用于电光显示装置的光纤光阱

    公开(公告)号:US4344668A

    公开(公告)日:1982-08-17

    申请号:US130638

    申请日:1980-03-17

    摘要: In an electro-optical display device, a fiber optic faceplate which transmits light only through a well-defined solid angle, is optically coupled to an electro-optical display panel having a specularly reflecting surface. The display panel can be either an active device, such as laser diodes, or passive such as a dynamic scattering liquid crystal device. The axes of the optical fibers comprising the faceplate are slanted to the display surface at an angle such that the light which enters the front surface of the faceplate and is specularly reflected from the display surface is trapped within the faceplate. However, light emitted or scattered from on-state display elements is transmitted through the faceplate to the viewer.A high contrast display results because off-state display elements on the display surface appear dark under even intense ambient illumination whereas the on-state elements appear bright.The faceplate has two major opposing surfaces which are aligned to one another at a predetermined angle in order to control the size and direction of the display field of view.

    摘要翻译: 在电光显示装置中,仅通过明确定义的立体角透射光的光纤面板光学耦合到具有镜面反射表面的电光显示面板。 显示面板可以是诸如激光二极管的有源器件,也可以是诸如动态散射液晶器件的无源器件。 包括面板的光纤的轴线以一定的角度倾斜到显示表面,使得进入面板的前表面并从显示表面镜面反射的光被捕获在面板内。 然而,从状态显示元件发射或散射的光通过面板传输到观看者。 造成高对比度的显示是因为显示表面上的截止状态显示元件在均匀强烈的环境照度下显得较暗,而导通状态元件显得很亮。 面板具有以预定角度彼此对准的两个主要相对表面,以便控制显示视野的尺寸和方向。

    Wide FOV simulator heads-up display with selective holographic reflector
combined
    7.
    发明授权
    Wide FOV simulator heads-up display with selective holographic reflector combined 失效
    具有选择性全息反射器的宽FOV模拟器平视显示器组合

    公开(公告)号:US5907416A

    公开(公告)日:1999-05-25

    申请号:US791019

    申请日:1997-01-27

    摘要: A wide field-of-view simulator heads-up display provides images to a user along an optical axis. A HUD CRT provides images of a predetermined design wavelength, while rear projection screen CRTs provide out-of-window scenery that does not contain the predetermined design wavelength. A curved holographic combiner is mounted on the optical axis with a reflective hologram on a concave surface covered with a urethane overcoat. The convex surface has an antireflective coating. A tilted beamsplitter cooperates with a folding mirror in a relay optical system for providing a virtual image of the HUD CRT for reflection from the holographic combiner.

    摘要翻译: 广泛的视野模拟器平视显示器沿着光轴向用户提供图像。 HUD CRT提供预定设计波长的图像,而背投屏幕CRT提供不包含预定设计波长的窗外风景。 弯曲的全息组合器安装在光轴上,反射全息图在被聚氨酯外涂层覆盖的凹面上。 凸面具有抗反射涂层。 倾斜分束器与中继光学系统中的折叠镜配合,用于提供用于来自全息组合器的反射的HUD CRT的虚拟图像。

    Holographic color filters for display applications, and operating method
    8.
    发明授权
    Holographic color filters for display applications, and operating method 失效
    用于显示应用的全息彩色滤光片和操作方法

    公开(公告)号:US5764389A

    公开(公告)日:1998-06-09

    申请号:US756419

    申请日:1996-11-26

    摘要: A holographic optical filter separates broadband electromagnetic radiation into spectral components corresponding to different spectral regions and then images this radiation onto pixels of a display. It includes two layers of holographic optical elements that are sensitive to each of these spectral regions. The holographic optical elements generally transmit radiation outside of their bandpass but can diffract radiation falling within it. The filter is well suited for display applications and can be used in either a reflective or transmissive mode.

    摘要翻译: 全息光学滤光器将宽带电磁辐射分离成对应于不同光谱区域的光谱分量,然后将该辐射图像显示在像素上。 它包括对这些光谱区域中的每一个敏感的两层全息光学元件。 全息光学元件通常在其带通外部透射辐射,但是可以衍射落在其内的辐射。 该滤波器非常适合显示应用,可用于反射或透射模式。

    Holographic parking assistance device
    9.
    发明授权
    Holographic parking assistance device 失效
    全息停车辅助装置

    公开(公告)号:US5406395A

    公开(公告)日:1995-04-11

    申请号:US143958

    申请日:1993-11-01

    CPC分类号: G03H1/22 B60Q1/48 G02B5/32

    摘要: An optical parking alignment system that includes at least one projector located on a vehicle for projecting a respective image forwardly of the vehicle, whereby alignment of the vehicle is indicated when each respective image is in focus on a screen disposed in front of the vehicle. The projector cam comprise a transparency and an imaging lens, or a hologram and a narrowband light source.

    摘要翻译: 一种光学停车对准系统,其包括位于车辆上的至少一个投影仪,用于向车辆前方突出各自的图像,由此当各个图像在位于车辆前方的屏幕上聚焦时,指示车辆的对准。 投影机凸轮包括透明体和成像透镜,或全息图和窄带光源。

    Liquid crystal display system using fiber optic faceplates
    10.
    发明授权
    Liquid crystal display system using fiber optic faceplates 失效
    液晶显示系统采用光纤面板

    公开(公告)号:US4349817A

    公开(公告)日:1982-09-14

    申请号:US116364

    申请日:1980-01-28

    CPC分类号: G02F1/133524 G02F1/135

    摘要: In a liquid crystal image display system, a fiber optic faceplate which transmits light only through a well defined acceptance cone is optically coupled to the liquid crystal display surface of a reflective dynamic scattering mode liquid crystal display device.In an image projector embodiment, light from an external light source is directed through the faceplate onto the liquid crystal display surface. Light scattered by activated (on-state) regions of the liquid crystal is substantially absorbed by the faceplate while light reflected from the non-activated (off-state) regions of the display surface is transmitted back through the faceplate to a projection lens which forms an image on a viewing screen.In a second embodiment of the invention, a viewer directly observes the liquid crystal display surface under ambient light from either natural or artificial light sources. By absorbing light from unwanted sources outside its transmission acceptance cone, the faceplate prevents loss of image contrast while transmitting light from sources within its acceptance cone needed to illuminate the display.

    摘要翻译: 在液晶图像显示系统中,仅通过良好定义的接收锥体透射光的光纤面板光耦合到反射动态散射模式液晶显示装置的液晶显示面。 在图像投影仪实施例中,来自外部光源的光通过面板引导到液晶显示面上。 通过液晶的激活(导通状态)区域散射的光被面板基本吸收,而从显示表面的未激活(关闭状态)区域反射的光从面板传输回到形成的投影透镜 观看屏幕上的图像。 在本发明的第二实施例中,观察者在来自天然或人造光源的环境光下直接观察液晶显示表面。 通过从其透射接收锥外部的不需要的光源吸收光,面板防止在照射显示器所需的接收锥体内的光源发射光时造成图像对比度的损失。