Optical apparatus in which image distortion is removed

Details Optical apparatus in which image distortion is removed Optical apparatus in which image distortion is removed

1994-03-31

1995-10-03

Cuchlinski, Jr., William A.

Optics: image projectors

Lens support

Lens position adjustable

353 69, 352140, 348745, G03B 2153

Patent

active

054556473

ABSTRACT:
An optical apparatus including an optical assembly having an image formation optical system and a device for receiving an image, said optical assembly including optical components disposed along an optical axis for projecting the image to a display surface, a detecting device for detecting each distance to a plurality of predetermined locations which are set apart from each other and for producing detection signals representing a non-orthogonal relationship between the display surface and the optical axis, and a controlling device for biasing at least one of the components included in the optical assembly in response to the detection signals thus obtained. Then, a part of such an optical assembly is driven in a direction perpendicular to the optical axis, thus making it possible to implement an optical apparatus capable of obtaining a projected image which is in focus all over the screen without distortion.

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patent: 5168298 (1992-12-01), Hirai

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