Channel illumination sheets

Details Channel illumination sheets Channel illumination sheets

1976-08-13

1978-09-12

Corbin, John K.

Optics: image projectors

Plural projection paths with single light source

353 27R, G02B 517

Patent

active

041133480

ABSTRACT:
A method of making illuminating sheets for microfiche readers. The illuminating sheet includes light conducting channels in a base or carrier having low creepage and low coefficients of thermal and of humidity expansion which terminate at different points accurately located over the surface of the sheet. The channel termini have mirrors which reflect light and thereby illuminate microimages on a microfiche. The method includes embossing elongated channels of different lengths onto a transparent, plastic sheet by means of an embossing roll. The roll carries spaced discs, the discs having peripheries of different lengths to thereby form channels of different lengths. The channels are then filled.

REFERENCES:
patent: 3402000 (1968-09-01), Crawford
patent: 3704068 (1972-11-01), Waly
patent: 3864034 (1975-02-01), Yettick

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2381704