Camera with lens barrier apparatus

Details Camera with lens barrier apparatus Camera with lens barrier apparatus

1998-07-21

1999-11-30

Perkey, W. B.

Photography

Camera detail

Lens cover

G03B 1700

Patent

active

059930780

ABSTRACT:
A lens barrier opening/closing mechanism includes of at least two rotating barrier members, each which rotates about a pivot, a drive ring which is driven to rotate about an optical axis, and at least two rotation force transmitting links, each which is supported on the drive ring and is provided with an engaging part which engages with a respective one of the two rotating barrier members. Thus, the engaging part of each of the two rotation force transmitting links is formed with a first section that non-resiliently moves the two rotating barrier members in an opening direction when the drive ring rotates from a position at which the barrier is fully closed, to a position at which the barrier is opened intermediately and resiliently urges the two rotating barrier members in a closing direction by a spring force when the drive ring rotates from the position at which the barrier is opened intermediately to the position at which the barrier is fully closed and a second section that non-resiliently moves the pair of rotating barrier members in the closing direction when the drive ring rotates from the position at which the barrier is fully opened to the position at which the barrier is opened intermediately and resiliently urges the pair of rotating barrier members towards the opening direction by a spring force when the drive ring rotates from the position at which the barrier is opened intermediately to the position at which the barrier is fully opened.

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WPI Accession No. 95-017940/03.
Patent Abstracts of Japan, vol. 14, No. 64 (P-1002), dated Feb. 6, 1998.

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