G - Physics – 03 – B
Patent
G - Physics
03
B
95/43
G03B 19/07 (2006.01) G02B 7/08 (2006.01) G03B 17/14 (2006.01)
Patent
CA 1296558
AO-4-47134M/KH/87 ABSTRACT OF THE DISCLOSURE A rear converter for use between a detachable photographing lens and a camera body which can be used with both AE (automatic exposure) and AF (autofocusing) lenses and camera bodies. One example of the converter according to the present invention includes a body mount matable with a camera body mount; a lens mount matable with a photographing lens mount of a photographing lens; a lens system including an automatic focusing movable lens; storing means for storing at least characteristic data for said rear converter; a first group of electrical contacts provided on said body mount, said first group of electrical contacts being capable of electrically contacting with electrical contacts provided on said camera body mount; a second group of electrical contacts provided on said lens mount for transmitting a signal for identifying said photographing lens to said storing means, said second group of electrical contacts being capable of electrically contacting with electrical contacts provided on said photographing lens mount; a first electrical contact provided on said body mount;,a second electrical contact provided on said lens mount and grounded electrically; and driving force transmitting means for transmitting driving force from said camera body to said movable lens.
551252
Kawasaki Masahiro
Sato Osamu
Asahi Kogaku Kogyo Kabushiki Kaisha
Riches Mckenzie & Herbert Llp
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