Finder of variable magnification

Details Finder of variable magnification Finder of variable magnification

1988-02-19

1989-06-27

Arnold, Bruce Y.

350425, 350556, 350560, 350570, G02B 15177

Patent

active

048423955

ABSTRACT:
The disclosed variable magnification finder includes, from front to rear, a first lens unit of negative power, a second lens unit of positive power, a third lens unit of positive power, the first, second and third lens units constituting an objective lens of positive power, and an eyepiece of positive power. The first and second lens units form a finder image on a plane just in front of the third lens unit. The second lens unit is moved axially forward to increase the image magnification, while the shift of diopter of the finder is simultaneously compensated for by moving the first lens unit.

REFERENCES:
patent: 1091933 (1944-03-01), Humbrecht
patent: 3656421 (1972-04-01), Ataka
patent: 4047207 (1977-09-01), Altman et al.
patent: 4063261 (1977-12-01), Kuboshima
patent: 4573781 (1986-03-01), Kato

Affiliated with

Also associated with

Rating

Finder of variable magnification does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Finder of variable magnification, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Finder of variable magnification will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-808478