Hand held viewer for various size films

Details Hand held viewer for various size films Hand held viewer for various size films

1981-02-23

1983-06-28

Haroian, Harry N.

Optics: image projectors

Film gate

40364, 40367, 353104, 353DIG2, G03B 150

Patent

active

043902570

ABSTRACT:
A compact film viewer for film strips of various sizes including a removable channel guide with a central opening disposed transverse a case between a light source and a lens and a film channel interchangeably received in the channel guide for slidably receiving film strips. The film channel is sized for a particular film and has a central opening corresponding to film frame size to prevent passage of excess light from the light source to the lens when viewing the film.

REFERENCES:
patent: 1943673 (1934-01-01), Hudson
patent: 2153221 (1939-04-01), Wittel
patent: 2231743 (1941-02-01), Young
patent: 2410722 (1946-11-01), Eckert
patent: 2512314 (1950-06-01), Dutton
patent: 2550799 (1951-05-01), Fuller
patent: 3045541 (1962-07-01), Bregman
patent: 3404472 (1968-10-01), Leahey et al.
patent: 3472584 (1969-10-01), Arens
patent: 3675354 (1972-07-01), Webb
patent: 3719419 (1973-03-01), Davee
patent: 3803737 (1974-04-01), Beckett
patent: 4050809 (1977-09-01), Boggs
patent: 4081920 (1978-04-01), Magee
Singer "Audio Visual Projectors" Auto-Vance II & Auto-Vance III p. 8.
Avas "Slide Viewer #4" Jul. 1978, Cat. p. 18.
Standard "35 MM Silent Filmstrip Projectors" Model 1995 p. 3.

Affiliated with

Also associated with

Rating

Hand held viewer for various size films does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hand held viewer for various size films, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hand held viewer for various size films will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-931236