US PATENT SUBCLASS 396 / 166
.~ Exposure control circuit with illumination mode

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


396 /   HD   PHOTOGRAPHY

155  DF  WITH OBJECT ILLUMINATION FOR EXPOSURE {21}
166.~ Exposure control circuit with illumination mode {4}
167  DF  .~.~> Exposure control circuit responsive to illumination source readiness
168  DF  .~.~> Program mode function
169  DF  .~.~> Shutter speed function only
170  DF  .~.~> Diaphragm function only

DEFINITION

Classification: 396/166

Exposure control circuit with illumination mode:

(under subclass 155) Subject matter in which a circuit controlling a shutter or a diaphragm (i.e., exposure control circuit) is modified when the illumination means is intended to be used.

SEE OR SEARCH THIS CLASS, SUBCLASS:

161, for artificial illumination termination control with exposure control circuit.

171, for photocell that responds to a burst of light for starting a flash operation or for starting an exposure system.

180+, for camera structure with object illumination and exposure synchronizer.

213+, for generic camera exposure control circuit.

, FOR 720+, for foreign art collections involving an automatic exposure control system including artificial illumination where exposure is controlled without controlling flash.

SEE OR SEARCH CLASS

348, Television,

221, 229+, and 362+ for exposure control circuit in video camera, system, and detail.

352, Motion Pictures,

141, and 177 for automatic diaphragm or shutter control in a motion picture camera; subclass 199 for projection light source synchronized with shutter.