Patent
1988-08-05
1991-07-23
Brown, Brian W.
G03B 1100
Patent
active
050347667
ABSTRACT:
A mirror assembly forming part of an overall arrangement for insuring that the lens of a camera supported by a tripod or the like is parallel with a flat surface supporting an object to be photographed is disclosed herein. This mirror assembly includes a mirror member having a mirrored body including a mirrored surface and a view hole through its mirrored body and mirrored surface. It also includes means for connecting the mirror member to the camera. One such means comprises a T-mount designed to temporarily replace the lens. Another means utilizes a combination of an adaptor ring and a retaining ring. Still another means utilizes the adaptor ring alone.
REFERENCES:
patent: 1992068 (1935-02-01), Gwozdecki
patent: 2701501 (1955-02-01), Cuny
patent: 3825938 (1974-07-01), Koch
patent: 4311364 (1982-01-01), Motomura et al.
patent: 4733257 (1988-03-01), Ziegler
"Spiratone's Bicentenial Sale Lenses, Camera and Darkroom Accessories" catalog 1976, p. 12.
Hasselblad, "Linear Mirror Unit" (Instructions).
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