Apparatus for preventing mirror bounce in camera

Details Apparatus for preventing mirror bounce in camera Apparatus for preventing mirror bounce in camera

1996-04-19

1998-06-16

Gray, David M.

Photography

Single lens reflex camera

With mirror support or drive

396447, G03B 1912

Patent

active

057686440

ABSTRACT:
An apparatus for preventing mirror bounce in a camera includes a mirror member rotatable in reciprocation between a viewing position and a photographing position. A mirror receiving member receives a kinetic energy of the mirror member by making a predetermined motion when a collision of the mirror member takes place and, at the same time, position-regulates the mirror member in the viewing position. A moment of inertia of the mirror receiving member and/or the mirror member is set so that a bounce time after the collision of the mirror member is shorter by 15% or above than a bounce time when fixing the mirror receiving member.

REFERENCES:
patent: 1009521 (1911-11-01), Hunt et al.
patent: 3209666 (1965-10-01), Kiper
patent: 4264170 (1981-04-01), Kurei
patent: 4730200 (1988-03-01), Kitazawa
patent: 5294952 (1994-03-01), Misawa

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