Iris apparatus

Details Iris apparatus Iris apparatus

1998-12-10

2000-03-07

Perkey, W. B.

Photography

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396458, 396505, 348362, 359228, G03B 900, G02B 2602

Patent

active

060331321

ABSTRACT:
An iris apparatus includes a transparent elastic member which is provided on an optical axis including a convex surface, the apex thereof being located on the optical axis; a transparent plate which is opposed to the convex surface of the transparent elastic member in the optical axis direction; an elastic tube which defines a space between the convex surface of the transparent elastic member and the transparent plate; light intercepting liquid which is contained within the space; and an actuator that relatively moves the transparent elastic member and the transparent plate in the optical axis direction.

REFERENCES:
patent: 3336852 (1967-08-01), Levin
patent: 3756700 (1973-09-01), Saxe
patent: 5589906 (1996-12-01), Shimizu
patent: 5781343 (1998-07-01), Cook

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