US PATENT SUBCLASS 396 / 505
.~ Diaphragm

Current as of: June, 1999
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396 /   HD   PHOTOGRAPHY

439  DF  CAMERA DETAIL {15}
505.~ Diaphragm {5}
506  DF  .~.~> Electro-optical, magneto-optical, or photochromic type
507  DF  .~.~> Including irregular diaphragm opening
508  DF  .~.~> Dynamo-electric actuator
509  DF  .~.~> Diaphragm opens for focusing or viewing
510  DF  .~.~> Plural pivoted blades

DEFINITION

Classification: 396/505

Diaphragm:

(under subclass 439) Subject matter having means to selectively vary the amount of light passing through the lens from the given object to a light-sensitive material.

SEE OR SEARCH THIS CLASS, SUBCLASS:

257+, for exposure control circuit controlling diaphragm function only.

449+, for diaphragm shutter.

458, for a shutter with diaphragm.

SEE OR SEARCH CLASS

359, Optics: Systems (Including Communication) and Elements, 237+, for optical modulator (including electro-optical), and subclasses 738+ for lens having light-limiting means, and see notes attached thereto for the line with Class 396.