Kenyon & Kenyon LLP
Stereo imaging system
The invention relates to a stereo imaging unit or system that can have a suitable degree of parallax and a wide angle of view even when used with an image pickup device smaller than film. The stereo imaging unit comprises a first entrance window 5L and a second entrance window 5R juxtaposed in the left-and-right direction, a plurality of reflecting surfaces 21L, 22L for guiding a light beam from the first entrance window 5L to a single image pickup device 4, a plurality of reflecting surfaces 21R, 22R for guiding a light beam from the second entrance window 5R to the image pickup device 4, a first negative lens group 1L for the light beam from the first entrance window 5L, a first positive lens group 3 located at an image side thereof via the longest air spacing in the lens system, a second lens group 1R for the light beam from the second entrance window 5R, and a second positive lens group 3 located on an image side thereof via the longest air spacing in the lens system, and satisfies conditions (1), (2), (3) and (4) for defining the focal lengths of the negative and positive lens groups in terms of the focal length of the overall lens system.
Olympus Corporation
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G02B G02B G02B G02B G02B
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Toshihide Kazuhiko Takashi Hidekazu
Nozawa Arai Miyoshi Iwaki