Objective lens focus assembly

Details Objective lens focus assembly Objective lens focus assembly

1997-12-24

1999-08-17

Nguyen, Thong

Optical: systems and elements

Lens

With support

359830, 359410, 359425, G02B 702, G02B 2300

Patent

active

059402288

ABSTRACT:
A modified objective lens focus assembly of a night vision image intensif monocular for providing focus control travel adjustment that has substantially free movement for a full range of travel. The focus ring and lock ring are cemented together as one subassembly which is then cemented to the monocular housing. The objective cell is then rotational within the assembly without use of separate focus ring and lock ring.

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patent: 2362603 (1944-11-01), Wittel
patent: 3254585 (1966-06-01), Gorey
patent: 3817601 (1974-06-01), Colaiace et al.
patent: 5381272 (1995-01-01), Kato et al.
patent: 5687034 (1997-11-01), Palmer
patent: 5737119 (1998-04-01), Mladjan et al.
patent: 5831778 (1998-11-01), Chueh

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