Lens barrel having optical systems which can be individually ins

Details Lens barrel having optical systems which can be individually ins Lens barrel having optical systems which can be individually ins

1995-01-20

1997-10-07

Epps, Georgia Y.

Optical: systems and elements

Lens

With support

359703, G02B 702, G02B 1514

Patent

active

056754450

ABSTRACT:
A lens apparatus, such as a lens barrel for a camera, allows different optical systems to be easily removed and installed. The lens apparatus has first and second optical systems with an optical axis of the lens apparatus extending thorough the first and second optical systems. First and second lens compartments respectively retain the first and second optical systems. First and second lens frames respectively correspond to, and respectively retain, the first and second lens compartments. The first and second lens compartments are independent structures from the first and second lens frames to allow the first and second lens compartments to be removed from, and inserted into, the respectively corresponding first and second lens frames. The present invention also relates to a method of assembling the lens apparatus. The method comprises (a) fixing a drive unit, which drives at least one of the first and second optical systems, to the base member; (b) fixing the first and second lens frames to the base member; and (c) respectively fixing the first and second lens compartments, respectively retaining the first and second optical systems, into the first and second lens frames after the drive unit and the first and second lens frames are fixed to the base member.

REFERENCES:
patent: 3765748 (1973-10-01), Mito
patent: 4824207 (1989-04-01), Kamata
patent: 4885600 (1989-12-01), Iwasa
patent: 5018832 (1991-05-01), Terunuma
patent: 5172276 (1992-12-01), Ueyama et al.
patent: 5293268 (1994-03-01), Ihara

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