Focal plane shutter and method for producing same

Details Focal plane shutter and method for producing same Focal plane shutter and method for producing same

1996-07-05

1998-08-18

Scott, J. R.

Photography

Camera detail

Shutter

396488, 396490, 396491, 396492, G03B 928, G03B 936, G03B 940

Patent

active

057970556

ABSTRACT:
An extremely durable, super-high speed shutter with speeds of 1/8000 second or faster advantageously increases the blade acceptance rate, reduces the cost, prevents abnormalities such as light leaking between the curtains and the like, contributes to the implementation of a super-high speed shutter with speeds exceeding 1/8000 of a second, corresponding to TTL multi-pattern light adjustment, and the like. The shutter includes a front curtain and a rear curtain each including a plurality of dividing blades; and at least one of the dividing blades among the front curtain and the rear curtain that is positioned on the photo lens side is formed from a black material having at least one uncoated surface.

REFERENCES:
patent: 4482231 (1984-11-01), Kato et al.
patent: 4775583 (1988-10-01), Kawamura
patent: 4965617 (1990-10-01), Matsubara
patent: 4992813 (1991-02-01), Matsubara
patent: 5202715 (1993-04-01), Matsubara
patent: 5323205 (1994-06-01), Matsubara et al.
patent: 5508773 (1996-04-01), Miyazaki et al.
patent: 5526091 (1996-06-01), Sakagami
patent: 5543880 (1996-08-01), Matsubara et al.

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