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公开(公告)号：US4195915A
公开(公告)日：1980-04-01
申请号：US903348
申请日：1978-05-05
IPC分类号： G09F9/00 , G02B23/10 , G02B27/00 , G02B27/01 , G02F1/13 , G02F1/1335 , G02F1/1343 , G09F9/30 , G09F9/35
CPC分类号： G02B23/10 , G02B27/0101 , G02F1/133553 , G02B2027/0118 , G02B2027/0194 , G02F1/133502 , G02F1/13439
摘要： There is disclosed a liquid crystal image projector which is suitable for use as an image source in an aircraft head-up display system. In this application, the projector provides extremely bright and high contrast symbology for the aircraft pilot. More generally, the projector has application wherever a television-type raster and/or calligraphic symbology display is needed. The increase in brightness and contrast ratio is achieved by using a reflector to concentrate light from a light source onto the liquid crystal display cell from whence it is reflected through an optical aperture stop in the reflector to the projecting lens and thence to a viewing surface.
摘要翻译： 公开了适用于飞机平视显示系统中的图像源的液晶图像投影仪。 在这个应用中，投影机为飞行员提供了非常明亮和高对比度的符号系统。 更一般来说，投影机具有应用于需要电视型光栅和/或书法符号系统显示的地方。 亮度和对比度的增加通过使用反射器将来自光源的光聚集到液晶显示单元上而实现，从反射器中的光学孔径反射器反射到投影透镜，然后到达观察表面。
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公开(公告)号：US4344668A
公开(公告)日：1982-08-17
申请号：US130638
申请日：1980-03-17
CPC分类号： G02F1/133524 , G02B6/08 , G02F1/135
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。
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公开(公告)号：US4349817A
公开(公告)日：1982-09-14
申请号：US116364
申请日：1980-01-28
IPC分类号： G01D7/00 , G02F1/1335 , G02F1/135 , G09F9/00 , G09G3/36
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。
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