公开(公告)号：US06582084B2

公开(公告)日：2003-06-24

申请号：US09811936

申请日：2001-03-19

申请人： Patricia H. DeLuca ,  Dennis F. Vanderwerf

发明人： Patricia H. DeLuca ,  Dennis F. Vanderwerf

IPC分类号： G03B2128

CPC分类号： G03B21/132 ,  Y10S353/03

摘要： An overhead projector including a Fresnel lens, a single element meniscus projection lens having a concave side and a convex side, and a folding mirror placed in an optical path between the Fresnel lens and the projection lens. The projection lens is oriented to have the concave side optically facing the Fresnel lens. The optical design of the overhead projector follows the following equation, FFres=(FLens(MLens+1)/MLens−SLD)/(MFres+1), where the Fresnel lens has a focal length FFres, and a magnification MFres, the projection lens has a focal length FLens and a magnification MLens, and SLD is the distance from the stop position and the projection lens.

公开(公告)号：US06520646B2

公开(公告)日：2003-02-18

申请号：US09746808

申请日：2000-12-22

申请人： Ernesto M. Rodriguez, Jr. ,  Steven G. Saxe ,  Patricia H. DeLuca

发明人： Ernesto M. Rodriguez, Jr. ,  Steven G. Saxe ,  Patricia H. DeLuca

IPC分类号： G03B2114

CPC分类号： G03B21/10 ,  G03B21/145 ,  H04N5/74 ,  H04N9/3185 ,  H04N9/3194

摘要： A front projection system and associated method are disclosed that correct distortion for a front projector device. The front projector device is characterized by off-axis optics and a throw-to-screen diagonal ratio of at most 1 which generate distortion including pincushion, keystone and anamorphic distortion components. Further, the projection device has an electronic distortion correction component operable to pre-distort an image prior to projection in order to correct for the pincushion, keystone and anamorphic distortion components of the projector device. Further, an associated method is also disclosed for correcting distortion generated in a projection system by a combination of optical and electronic correction. The method comprises setting a limit on the amount of image information that is acceptable to lose through the optical components, and selecting an optical solution is comprising optics having inherent distortion within the set limit. Then, an electronic correction component is selected that is operable to pre-distort an image to correct for remaining distortion not corrected by the optics of the optical solution.

摘要翻译： 公开了一种前投影系统和相关方法，用于校正前投影仪装置的失真。 前置放映机装置的特征在于离轴光学元件和至多1的歪斜对角线比例，其产生包括枕形，梯形失真和变形失真分量的失真。 此外，投影装置具有电子失真校正部件，其可操作以在投影之前对图像进行预失真，以便校正投影仪设备的枕形，梯形失真和变形失真部件。 此外，还公开了一种用于通过光学和电子校正的组合校正投影系统中产生的失真的相关方法。 该方法包括设置通过光学部件损失的可接受的图像信息量的限制，并且选择光学解决方案包括在设定极限内具有固有失真的光学器件。 然后，选择电子校正组件，其可操作用于对图像进行预失真以校正未被光学解决方案的光学器件校正的剩余失真。

公开(公告)号：US06568814B2

公开(公告)日：2003-05-27

申请号：US09846405

申请日：2001-05-01

申请人： Ernesto M. Rodriguez, Jr. ,  Joseph C. Carls ,  Patricia H. DeLuca

发明人： Ernesto M. Rodriguez, Jr. ,  Joseph C. Carls ,  Patricia H. DeLuca

IPC分类号： G03B2100

CPC分类号： H04N9/3141 ,  G03B21/10 ,  G03B21/147 ,  H04N5/74

摘要： A front image projection device and corresponding method are disclosed that utilize a shaped imager component to pre-distort an input image and thereby compensate for the distortion expected in a screen image. The front projection device includes projection components, image generating components, and illumination components. The shaped image component may compensate at least in part for distortion introduced due to the components of the projection system. The physical configuration for the shaped imager may be determined through a modeled or actual ray trace through the projection system, and the resulting physical configuration may be a geometric shape having a curved top, a curved bottom and curved sides.