Optical apparatus

Details Optical apparatus Optical apparatus

2009-07-16

2010-11-23

Hasan, Mohammed (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S683000

Reexamination Certificate

active

07839578

ABSTRACT:
An optical apparatus includes an optical system in which two zoom lens units perform zooming in different ranges in accordance with a zoom position, and a mechanism for driving the two zoom lens units by a single driving portion. An urging force for urging moving members toward an interlocking movement member that is moved along the optical axis by a feed screw is cut off by regulating portions.

REFERENCES:
patent: 6147814 (2000-11-01), Kitazawa et al.
patent: 7187504 (2007-03-01), Horiuchi
patent: 7336426 (2008-02-01), Nakatani et al.
patent: 64-084233 (1989-03-01), None
patent: 04-024606 (1992-01-01), None

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