Projectors

Details Projectors Projectors

1976-06-11

1978-05-30

Haroian, Harry N.

Optics: image projectors

Structurally related projector and screen

G03B 2124

Patent

active

040920640

ABSTRACT:
The portable projector has a drawer which is pulled forward for use and to gain access to the opal glass rear projection screen which is inserted into the slot in the front of the drawer. The projection lens is removed from its storage compartment in the drawer and threaded into the optical housing after it has been pivoted to its upright position. A selected microfiche is inserted in the slot between the optical housing and the lensboard and is retained in selected position by friction from velour facings in the slot. The bulb is low voltage, low power to permit use of battery power or line voltage through a transformer. If the opal glass is not used, the image can be projected on a light colored surface within the limitations of the bulb intensity and ambient light.

REFERENCES:
patent: 2506168 (1950-05-01), Perillo
patent: 2847902 (1958-08-01), D'Incerti

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-466838