Lens advancing mechanism

Details Lens advancing mechanism Lens advancing mechanism

1993-11-03

1995-08-29

Epps, Georgia Y.

Optical: systems and elements

Lens

With variable magnification

359699, 359700, 359826, G02B 702

Patent

active

054465931

ABSTRACT:
A lens advancing mechanism which includes a stationary barrel having a linear guide groove arranged parallel to an optical axis, a ring rotatably coupled on the outer circumferential surface of the fixed barrel and a lens supporting member having a guide portion which is received in the linear guide groove. The ring has at least one lead groove formed on its inner surface and the guide portion has at least one protrusion which is received in the lead groove of the ring. When the ring is rotated, the lens supporting member is moved along the linear guide groove.

REFERENCES:
patent: 4346967 (1982-08-01), Komoto et al.
patent: 4387968 (1983-06-01), Sekiguchi
patent: 4564264 (1986-01-01), Komoto
patent: 4764783 (1988-08-01), Tanaka
patent: 4948227 (1990-08-01), Takeyasu
patent: 4993815 (1991-02-01), Yamazaki et al.
patent: 5043752 (1991-08-01), Kohmoto
patent: 5164757 (1992-11-01), Nomura
patent: 5164860 (1992-11-01), Suzuki et al.
patent: 5191482 (1993-03-01), Sekiguchi
patent: 5223980 (1993-06-01), Hamasaki
patent: 5231449 (1993-06-01), Nomura
patent: 5245476 (1993-09-01), Shono
patent: 5255124 (1993-10-01), Iwamura
patent: 5262898 (1993-11-01), Nomura

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