Optical: systems and elements – Lens – With light limiting or controlling means
Patent
1991-02-15
1993-01-05
Hannaher, Constantine
Optical: systems and elements
Lens
With light limiting or controlling means
359676, 359691, 359738, 359748, G02B 1514, G02B 1500, G02B 710
Patent
active
051776391
ABSTRACT:
A stop device for a zoom lens includes an aperture-stop provided between a front lens group and a rear lens group. The front lens group, the rear lens group, and the aperture-stop are moved relative to each other by a motor, to carry out a zooming operation. The motor is provided behind the front lens group and the aperture-stop, and the aperture-stop is positioned closed to a front end of the motor when the aperture-stop is at its rearmost position.
REFERENCES:
patent: 3610733 (1971-10-01), Back
patent: 3906529 (1975-09-01), Filipovich
patent: 4159864 (1979-07-01), Yasukuni et al.
patent: 4210387 (1980-07-01), Ogawa
patent: 4299453 (1981-11-01), Momiyama et al.
patent: 4367927 (1983-01-01), Fujii
patent: 4417281 (1983-11-01), Hama
patent: 4432615 (1984-02-01), Ikemori
patent: 4487482 (1984-12-01), Itoh et al.
patent: 4506958 (1985-03-01), Imai
patent: 4623266 (1986-11-01), Fujii
patent: 4630899 (1986-12-01), Kato et al.
patent: 4749269 (1988-06-01), Nakashima et al.
patent: 4759618 (1988-07-01), Kamata
patent: 4911542 (1990-03-01), Nishio et al.
patent: 5018843 (1991-05-01), Inadome et al.
English Language Abstract of Japanese Patent Publication 55-55305.
English Language Abstract of Japanese Patent Publication 58-62632.
Asahi Kogaku Kogyo Kabushiki Kaisha
Glick Edward J.
Hannaher Constantine
LandOfFree
Stop device for zoom lens does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Stop device for zoom lens, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stop device for zoom lens will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2394992