Microfilm reader

Details Microfilm reader Microfilm reader

1977-07-21

1981-01-13

Stephan, Steven L.

Optics: image projectors

Selective data retrieval

Plural picture rows on single microcard

353 96, 353101, G03B 2308, G03B 148

Patent

active

042446414

ABSTRACT:
A microfilm reader for enlarged projections of any desired micropicture among a number of such pictures on a microfilm. The microfilm is interleaved between two movable plates. A slidable support for the image forming objective is pressed with a tensioned spring against the upper plate. The slidable support can be connected to a slide lever for effecting its placement in proper position. Two arms of a spring can be employed for mounting the slidable support and for tilting it around an axis essentially parallel to the cover plate.

REFERENCES:
patent: 3634005 (1972-01-01), Peters
patent: 3718391 (1973-02-01), Pfeifer et al.
patent: 3792923 (1974-02-01), Pfeifer et al.
patent: 3917389 (1975-11-01), Shoji
patent: 4025175 (1977-05-01), Leibundgut et al.
patent: 4067648 (1978-01-01), Spreitzer

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2228804