Optical structure for microfiche reader

Details Optical structure for microfiche reader Optical structure for microfiche reader

G - Physics

03

B

88/72

G03B 21/11 (2006.01)

Patent

CA 1095298

OPTICAL STRUCTURE FOR MICROFICHE READER Abstract of the Disclosure A microfiche reader providing varying optical paths of projection of a microfiche image. The light source for the reader may be removed and readily replaced without the operator's touching the sensitive lamp. Dual image forming, floating lenses having n universal focusing system provide multiple magnification capabilities with uniform focusing in all positions of the microfiche. The focusing system is self-compensating for mechanical tolerances, Additional means prevent chipping of the glass plates holding the micro- fiche when the floating lenses are removed from contact with the glass plates.

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