Lens apparatus and optical apparatus

Details Lens apparatus and optical apparatus Lens apparatus and optical apparatus

2011-03-08

2011-03-08

Ben, Loha (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S694000, C359S699000, C359S701000, C359S704000

Reexamination Certificate

active

07903347

ABSTRACT:
The lens apparatus includes a guide barrel including a guide groove portion penetrating through a circumferential wall of the guide barrel, and a cam barrel disposed rotatably and including a penetrating cam groove portion penetrating through a circumferential wall of the cam barrel and a non-penetrating cam groove portion not penetrating therethrough. The apparatus further includes a first holding member holding a first optical element and moved in an optical axis direction by the guide groove portion and the penetrating cam groove portion with rotation of the cam barrel, a second holding member holding a second optical element and moved in the optical axis direction by the guide groove portion and the non-penetrating cam groove portion with the rotation of the cam barrel, and an adjusting mechanism used for adjusting a position of one of the first and second optical elements relative to that of the other.

REFERENCES:
patent: 4099847 (1978-07-01), Ito
patent: 4281907 (1981-08-01), Kamata
patent: 4324457 (1982-04-01), Tomori
patent: 4461544 (1984-07-01), Isobe et al.
patent: 6570718 (2003-05-01), Nomura et al.
patent: 6853500 (2005-02-01), Nomura et al.
patent: 7212352 (2007-05-01), Nomura et al.
patent: 7327527 (2008-02-01), Sakamoto et al.
patent: 2001-100080 (2001-04-01), None

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