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公开(公告)号：US5692819A
公开(公告)日：1997-12-02
申请号：US403549
申请日：1995-03-02
CPC分类号： F21V5/048 , F21V7/09 , H04N5/7441 , H04N9/3152 , F21W2131/406 , G02F1/1336 , H04N5/74
摘要： A projector comprising a light source having first and second high-luminance light emitting areas, an illuminating optical system for directing the light, from said light source, toward an object to be illuminated, wherein said first and second high-luminance light-emitting areas are positioned on the optical axis of said illuminating optical system, and a projection optical system for projecting the light emerging from said illuminated object, wherein said illuminating optical system is constructed in such a manner that a central area of said illuminated object is illuminated by most of the light beam from said first high-luminance light-emitting area, and a peripheral area of said illuminated object is illuminated by the remainder of the light beam from said first high-luminance light emitting area and most of the light from said second high-luminance light-emitting area.
摘要翻译： 一种投影仪，包括具有第一和第二高亮度发光区域的光源，用于将光从所述光源引导到被照明物体的照明光学系统，其中所述第一和第二高亮度发光区域 位于所述照明光学系统的光轴上，以及投影光学系统，用于投射从所述被照射物体出射的光，其中所述照明光学系统被构造成使得所述被照明物体的中心区域被大部分照射 来自所述第一高亮度发光区域的光束和所述被照明物体的外围区域被来自所述第一高亮度发光区域的光束的剩余部分照射，并且来自所述第二高亮度发光区域的大部分光线 亮度发光面积。
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公开(公告)号：US5833341A
公开(公告)日：1998-11-10
申请号：US453441
申请日：1995-05-30
CPC分类号： H04N9/315 , F21V13/04 , F21V7/09 , G02B19/0023 , G02B19/0028 , G02B19/0047 , G03B21/2066
摘要： This invention provides a projector capable of effectively utilizing the light from the light source and significantly reducing the light illuminating the outside of the area to be illuminated, thereby attaining an excellent efficiency of light utilization. In the illuminating system of the present invention provided with a light source and a reflector, there is further provided a circular reflector of a spherical surface, for returning the light, which emerges from the light source to the outside of the area to be illuminated, without being reflected on the reflector, to the light source. Also there is provided a flat mirror or a substantially spherical sub reflector for returning the light, which proceeds to the outside of the area to be illuminated, after being reflected on the reflector, to the light source. The sub reflector may be provided in the vicinity of the light source.
摘要翻译： 本发明提供一种能够有效地利用来自光源的光并且显着地减少照亮被照射区域的外部的光的投影仪，从而获得优异的光利用效率。 在设置有光源和反射器的本发明的照明系统中，还设置有球面的圆形反射器，用于将从光源出射的光返回到被照射区域的外部， 而不在反射器上反射到光源。 还提供了一种平面镜或基本上球形的副反射器，用于使在光反射器被反射之后进入待照亮区域的外部的光返回到光源。 副反射器可以设置在光源附近。
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公开(公告)号：US5749642A
公开(公告)日：1998-05-12
申请号：US819408
申请日：1997-03-17
CPC分类号： H04N9/315 , F21V13/04 , F21V7/09 , G02B19/0023 , G02B19/0028 , G02B19/0047 , G03B21/2066
摘要： This invention provides a projector capable of effectively utilizing the light from the light source and significantly reducing the light illuminating the outside of the area to be illuminated, thereby attaining an excellent efficiency of light utilization. In the illuminating system of the present invention provided with a light source and a reflector, there is further provided a circular reflector of a spherical surface, for returning the light, which emerges from the light source to the outside of the area to be illuminated, without being reflected on the reflector, to the light source. Also there is provided a flat mirror or a substantially spherical sub reflector for returning the light, which proceeds to the outside of the area to be illuminated, after being reflected on the reflector, to the light source. The sub reflector may be provided in the vicinity of the light source.
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