Viewer

Details Viewer Viewer

1985-04-04

1987-08-25

Corbin, John K.

350540, 350541, G02B 308, G02B 504, G02B 2504

Patent

active

046889051

ABSTRACT:
In a viewer for vehicles, machines, apparatus and other various equipments, including an optical element, which is capable of viewing a certain range of visual field through an opening of a case by using the optical element, at least two openings are formed in the case and a mirror arranged therein is capable of being in or out of the visual field including at least the two openings, thereby changing the visual field. A Fresnel concave lens with or without a refractive prism attached thereon is put in each opening. The optical element comprises the Fresnel concave lens, the refractive prism and the mirror.

REFERENCES:
patent: 4260217 (1981-04-01), Traeger et al.
patent: 4274714 (1981-06-01), Okamura
patent: 4573773 (1986-08-01), Arndt et al.

Affiliated with

Also associated with

Rating

Viewer does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1919961