Lens system with reticle and diffuser glass

Details Lens system with reticle and diffuser glass Lens system with reticle and diffuser glass

1978-09-12

1980-04-22

Henry, Jon W.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356251, 358 55, 358227, 354195, 352139, G02B 704, G03B 1318, G02B 2732, G02B 2740

Patent

active

041992202

ABSTRACT:
A lens system is disclosed herein having a pair of telescoping tubes coaxially related to each other so that their central axes are coextensive. A selected one of the tubes carries a collimating lens while the other tube carries a reticle and a diffusing glass. A locking set screw fixes the pair of tubes in an optically correct relationship to each other. A mounting flange is threadably attached to the end of the lens tube opposite to its end in telescoping or sliding relationship with the reticle tube so that the lens unit may be detachable carried on a selected camera lens or camera.

REFERENCES:
patent: 1442015 (1923-01-01), Tillyer
patent: 2405063 (1946-07-01), Sisson
patent: 2472809 (1949-06-01), Decker
patent: 3293357 (1966-12-01), Yoshikazu et al.
patent: 3721488 (1973-03-01), Kuhne
patent: 4109279 (1978-08-01), Hirose et al.

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