US PATENT SUBCLASS 396 / 120
.~.~ With Position Sensitive Device (PSD)

Current as of: June, 1999
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396 /   HD   PHOTOGRAPHY

89  DF  WITH EXPOSURE OBJECTIVE FOCUSING MEANS, FOCUSING AID, OR RANGEFINDING MEANS {28}
111  DF  .~ Optical detail with photoelement system {8}
120.~.~ With Position Sensitive Device (PSD)

DEFINITION

Classification: 396/120

With Position Sensitive Device (PSD):

(under subclass 111) Subject matter wherein the photoelement system is a light receiving element which can produce two or more current outputs upon receiving light from an object.

(1) Note. A distance from a camera to an object is measured based on the ratio of the current outputs of the PSD.

SEE OR SEARCH CLASS

250, Radiant Energy,

206.1, and 206.2 for position sensitive device in photocell controlled circuit.