Radiant energy – Ionic separation or analysis – Static field-type ion path-bending selecting means
Patent
1988-11-03
1991-04-02
Perkey, W. B.
Radiant energy
Ionic separation or analysis
Static field-type ion path-bending selecting means
2502018, G03B 1336, G02B 734
Patent
active
050050419
ABSTRACT:
A focus detecting apparatus is provided with an optical assembly having a plurality of components disposed near the predetermined imaging plane of an objective lens and performing the actions of different field lenses, a re-imaging lens unit for receiving a light beam from the optical assembly and forming light distributions whose relative position changes in conformity with the focus adjusted state of the objective lens, and a photoelectric converting device having a plurality of sensor arrangements for receiving the light distributions and converting the light distributions into electrical signals. Predetermined one of the sensor arrangements are adapted to receive the light beam from predetermined ones of the portions of the optical assembly.
REFERENCES:
patent: 4563576 (1986-01-01), Matsumura et al.
patent: 4636627 (1987-01-01), Matsumura
patent: 4659917 (1987-04-01), Suzuki et al.
patent: 4792669 (1988-12-01), Ohnuki et al.
patent: 4821074 (1989-04-01), Nakai et al.
patent: 4857718 (1989-08-01), Karasaki et al.
patent: 4857720 (1989-08-01), Karasaki
Aoyama Keisuke
Ishizaki Akira
Ohtaka Keiji
Suda Yasuo
Suzuki Kenji
Canon Kabushiki Kaisha
Perkey W. B.
LandOfFree
Focus detecting apparatus having a plurality of focus detecting 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 having a plurality of focus detecting , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Focus detecting apparatus having a plurality of focus detecting will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-329345