US PATENT SUBCLASS 396 / 268
HAVING PHOTOCELL AT SPECIFIC POSITION WITHIN CAMERA

Current as of: June, 1999
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396 /   HD   PHOTOGRAPHY

268HAVING PHOTOCELL AT SPECIFIC POSITION WITHIN CAMERA {8}
269  DF  .~> Photocell responsive to adjacent illuminator
270  DF  .~> Movable into or out of light path
271  DF  .~> In viewfinder area
272  DF  .~> Having two or more mirrors
273  DF  .~> Having light reflected from film or shutter or through film
274  DF  .~> Having means for changing the photocell field of view
275  DF  .~> With color filter
276  DF  .~> Having variable light transmission means

DEFINITION

Classification: 396/268

HAVING PHOTOCELL AT SPECIFIC POSITION WITHIN CAMERA:

(under the class definition) Subject matter in which a photocell is located with respect to a specific camera structure.

SEE OR SEARCH THIS CLASS, SUBCLASS:

54, for camera shake sensing using photoarray.

92, for lens characteristic compensating by selecting effective photoelements.

96, for focusing or rangefinding with accumulation photoarray and time control.

100, for dual purpose focusing photoelement.

111+, for focusing or rangefinding devices with optical details of a photoelement system. 162, for photocell in the termination control of an illumination means.

171, for photocell used as a flash trigger.

172, for photocell measuring the light output of an artificial illumination means.

570, for fluid-treating apparatus with photocell control.

SEE OR SEARCH CLASS

250, Radiant Energy,

200+, for generic photocell circuits.