Dual focal length camera

Details Dual focal length camera Dual focal length camera

1997-03-12

1999-09-28

Lee, Eddie C.

Photography

Having variable focal length of camera objective

396 73, 396351, 396352, G03B 1700, G03B 1500

Patent

active

059602180

ABSTRACT:
Compact dual focal length cameras are disclosed having wide angle and telephoto modes of operation. The ratio of telephoto to wide angle ratios is at least 3 to 1, but is typically higher so that the cameras can be used in conjunction with binoculars to take telephoto pictures that give the same visual appearance as when the same scenes are observed through binoculars. Compactness and increased focal length are achieved via four mirror arrangements one preferred embodiment of which wraps around the camera film plane and uses a single constant angular velocity shutter for providing both wide angle and telephoto exposure times. Compact, single-use, medium telephoto cameras are also disclosed.

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