Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent
1994-07-08
1996-06-25
Westin, Edward P.
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
354407, G01J 120
Patent
active
055302360
ABSTRACT:
A focus detecting apparatus includes a field mask disposed on a focal plane, the field mask being provided with multiple apertures arranged in a first configuration. A plurality of condenser lenses is disposed behind the apertures, each of the condenser lenses corresponding to each of the apertures. The apparatus further includes plural pairs of separator lenses for splitting images seen through the apertures. A sensor unit having multiple line sensors is arranged in a second configuration that differs from the first orientation configuration: The multiple line sensors are disposed on a reimaging plane for reimaging the split images, and each of the line sensors corresponds to each of the multiple apertures. The apparatus also includes a mechanism for deflecting a bundle of rays, passing through at least one of the multiple apertures, to be close to another bundle of rays passing through another aperture while the first configuration is maintained. A mechanism for changing the orientation of the bundles of rays of the first configuration passed through the multiple apertures into the second configuration, is provided and is disposed between the deflecting mechanism and the separator lenses.
REFERENCES:
patent: 4636627 (1987-01-01), Matsumura
patent: 4954701 (1990-09-01), Suzuki et al.
patent: 4988856 (1991-01-01), Hamada et al.
patent: 4992818 (1991-02-01), Karasaki et al.
patent: 5017005 (1991-05-01), Shindo
patent: 5140359 (1992-08-01), Higashihara et al.
patent: 5155518 (1992-10-01), Utagawa
patent: 5192860 (1993-03-01), Shinohara et al.
patent: 5206498 (1993-04-01), Sensui
patent: 5241168 (1993-08-01), Sensui
patent: 5257062 (1993-10-01), Moriyama
patent: 5321248 (1994-06-01), Sensui
patent: 5327192 (1994-07-01), Sensui
patent: 5393969 (1995-02-01), Ohsawa
English Language Abstract of JP-5-66345.
Asahi Kogaku Kogyo Kabushiki Kaisha
Le Que T.
Westin Edward P.
LandOfFree
Focus detecting apparatus with particular arrangement of light r does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Focus detecting apparatus with particular arrangement of light r, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Focus detecting apparatus with particular arrangement of light r will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2190728