Image magnification control device for a camera

Details Image magnification control device for a camera Image magnification control device for a camera

1993-11-02

1995-06-27

Gray, David M.

G03B 1300

Patent

active

054284198

ABSTRACT:
An image magnification control device for a camera. Control focal length required to maintain an image magnification constant is computed based upon defocus infomation detected by using a light having passed through a photographic lens.
In case focal length of the photographic lens comes out of a range wherein the set image magnification can be obtained, various operations such as shutter-release lock operation are executed depending upon designs.

REFERENCES:
patent: 4145732 (1979-03-01), Pandres, Jr.
patent: 4156933 (1979-05-01), Pandres, Jr.
patent: 4446526 (1984-05-01), Iwande
patent: 4500778 (1985-02-01), Kusaka et al.
patent: 4508443 (1985-04-01), Matsuzaki et al.
patent: 4509842 (1985-04-01), Taniguchi et al.
patent: 4560267 (1985-12-01), Nakai et al.
patent: 4623238 (1986-11-01), Taniguchi et al.
patent: 4717933 (1988-01-01), Ando et al.
patent: 4908643 (1990-03-01), Tamada et al.
patent: 4935763 (1990-06-01), Itoh et al.
patent: 4951075 (1990-08-01), Tokumaru et al.
patent: 4962400 (1990-10-01), Otani et al.
patent: 5063402 (1991-11-01), Shimada et al.
patent: 5093680 (1992-03-01), Suzuki et al.
patent: 5113209 (1992-05-01), Ueyama et al.
patent: 5159377 (1992-10-01), Suzuki et al.
patent: 5227829 (1993-07-01), Imanari et al.
patent: 5325146 (1994-06-01), Toji
Patent Abstracts of Japan, vol. 13, No. 12 (P-812) [3360], Dec. 1, 1989.
English language Abstract of JP-A-60 001602.
English Language Abstract JP 1-131509.
English Language Abstract of JP 1-123026.
English Language Abstract of JP 1-99012.
English Language Abstract of JP 1-99011.
English Language Abstract of JP 64-79713.
English Language Abstract of JP 64-62608.
English Language Abstract of JP 64-56406.
English Language Abstract of JP 64-44429.
English Language Abstract of JP 64-44428.
English Language Abstract of JP 63-220118.
English Language Abstract of JP 63-5331.
English Language Abstract of JP 63-200340.
English Language Abstract of JP 62-133431.
English Language Abstract of JP 62-133430.
English Language Abstract of JP 62-118328.
English Language Abstract of JP 61-230111.
English Language Abstract of JP 61-38917.
English Language Abstract of JP 61-26015.
English Language Abstract of JP 53-113527.
Infinity Super Zoom 300 Camera Instruction Manual, p. 67, published Jul. 1988.

Affiliated with

Also associated with

Rating

Image magnification control device for a camera does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image magnification control device for a camera, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image magnification control device for a camera will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-290743