Zoom lens

Details Zoom lens Zoom lens

1981-11-10

1984-11-13

Corbin, John K.

350439, 350450, G02B 964, G02B 1518

Patent

active

044822189

ABSTRACT:
A zoom lens comprising, from front to rear, a front section having the focusing function, a zoom section having the magnification varying function, a diaphragm, and a relay section which is stationary during focusing and zooming. The relay section is constructed with four lenses, from front to rear, a positive first lens, negative second lens, positive third lens and positive fourth lens, and an exit pupil that lies at almost infinity from the focal plane.

REFERENCES:
patent: 2971051 (1961-02-01), Back
patent: 3125626 (1964-03-01), Miles
patent: 3918797 (1975-11-01), Takano
patent: 4017161 (1977-04-01), Tsuji
patent: 4278331 (1981-07-01), Tanaka

Affiliated with

Also associated with

Rating

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 Zoom lens, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Zoom lens will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2357771