Optical projection apparatus
First Claim
1. Apparatus for photographically exposing an image-receiving surface to a light image of an object, said apparatus comprising:
- a concave mirror,a convex mirror of smaller radius of curvature with its center of curvature substantially at the center of curvature of the concave mirror,means for supporting an object surface and an image-receiving surface with respect to each other and with respect to said mirrors so as to optically define a common image and optical plane,said optically defined common image and optical plane being located a distance from the concave mirror substantially equal to the radius of curvature thereof,said optically defined common image and optical plane containing the centers of curvature of said mirrors, and the perpendicular to the optically defined common image and optical plane through said centers of curvature constituting an axis of said mirrors,means for illuminating an arcuate area at the site of the object surface which forms an arcuate light image area at the site of the imagereceiving surface,said arcuate area at the site of the object surface and said arcuate light image area at the site of the image-receiving surface optically defining, on the optically defined common image and optical plane, arcuate images respectively having arcuate areas exterior of and substantially centered on said axis of the mirrors, andmeans to advance said support means and the sites of the object and image-receiving surfaces to be supported thereon in their planes transversely of the means for illuminating the arcuate area on the object surface,said advancing means comprising a carriage rotatable about an axis fixed with respect to said concave and convex mirrors.
1 Assignment
0 Petitions
Accused Products
Abstract
A unity magnification catoptric image-forming system and an illumination system on the one hand, and an object- and image-surface supporting means on the other hand, are arranged for relative movement to retain the object and image surfaces in unity magnification conjugate planes of the catoptric system while effecting a scanning-type exposure of successive portions of the image surface to successively illuminated portions of the object. Fine motion mechanisms permit accurate preliminary adjustment of the object- and image-receiving surfaces relative to each other while under visual examination with the aid of the catoptric image-forming system.
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Citations
8 Claims
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1. Apparatus for photographically exposing an image-receiving surface to a light image of an object, said apparatus comprising:
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a concave mirror, a convex mirror of smaller radius of curvature with its center of curvature substantially at the center of curvature of the concave mirror, means for supporting an object surface and an image-receiving surface with respect to each other and with respect to said mirrors so as to optically define a common image and optical plane, said optically defined common image and optical plane being located a distance from the concave mirror substantially equal to the radius of curvature thereof, said optically defined common image and optical plane containing the centers of curvature of said mirrors, and the perpendicular to the optically defined common image and optical plane through said centers of curvature constituting an axis of said mirrors, means for illuminating an arcuate area at the site of the object surface which forms an arcuate light image area at the site of the imagereceiving surface, said arcuate area at the site of the object surface and said arcuate light image area at the site of the image-receiving surface optically defining, on the optically defined common image and optical plane, arcuate images respectively having arcuate areas exterior of and substantially centered on said axis of the mirrors, and means to advance said support means and the sites of the object and image-receiving surfaces to be supported thereon in their planes transversely of the means for illuminating the arcuate area on the object surface, said advancing means comprising a carriage rotatable about an axis fixed with respect to said concave and convex mirrors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification