US PATENT SUBCLASS 356 / 141.1
.~.~ With photodetection of reflected beam angle with respect to a unidirectional source beam

Current as of: June, 1999
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356 /   HD   OPTICS: MEASURING AND TESTING

138  DF  ANGLE MEASURING OR ANGULAR AXIAL ALIGNMENT {11}
140  DF  .~ Apex of angle at observing or detecting station {6}
141.1.~.~ With photodetection of reflected beam angle with respect to a unidirectional source beam

DEFINITION

Classification: 356/141.1

With photodetection of reflected beam angle with respect to a unidirectional source beam:

(under subclass 140) Subject matter including a source beam directed along one axis to an object from which the beam's reflected angular direction with respect to its projected direction is measured and where the apex of the measured angle is at the detecting station.

SEE OR SEARCH THIS CLASS, SUBCLASS:

3.01+, for angle determination during the triangulation of an object's distance.

139.01+, for techniques that may be used in star or sun angle measurements.

139.09, for techniques that may be used in wheel alignment with photodetection.

152.2+, for instances where the apex of the desired angle being measured is not at the detecting station, even though the detecting station apex angle may be involved in some way in the determination.

399+, for lateral alignment of a beam that does not follow an angular path to the detecting station. SEE OR SEARCH CLASS

250, Radiant Energy,

201.6, for angle determination during the triangulation of an object; and subclasses 206.1+ for alternative outputs of measured coordinates that are not displayed, per se.

396, Photography,

89+, where an angle is determined in the triangulation of an object's distance.