Compact zoom lens of large aperture ratio

Details Compact zoom lens of large aperture ratio Compact zoom lens of large aperture ratio

1988-02-17

1989-07-11

Bovernick, Rodney B.

G02B 1514

Patent

active

048465631

ABSTRACT:
A zoom lens comprising a positive first lens unit for focusing, a negative second lens unit as the variator, a negative third lens unit as the compensator, a positive fourth lens unit for making afocal the diverging light beam from the third unit in travelling thereacross, and an image forming or fifth lens unit having six lenses, satisfying the following conditions:

REFERENCES:
patent: 4621905 (1986-11-01), Kato et al.

Affiliated with

Also associated with

Rating

Compact zoom lens of large aperture ratio does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Compact zoom lens of large aperture ratio, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compact zoom lens of large aperture ratio will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-432484