US PATENT SUBCLASS 356 / 3.01
.~ Triangulation ranging to a point with one projected beam

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

3  DF  RANGE OR REMOTE DISTANCE FINDING {9}
3.01.~ Triangulation ranging to a point with one projected beam {3}
3.02  DF  .~.~> Using photodetection with a fixed axial line of sight
3.03  DF  .~.~> Using a source beam with a fixed axial direction or plane {3}
3.09  DF  .~.~> Requiring scanning of a source beam

DEFINITION

Classification: 356/3.01

Triangulation ranging to a point with one projected beam:

(under subclass 3) Subject matter including the following: (a) the distance to any single remote target point is determined in accordance with the principles of triangulation; (b) the target may include several points requiring more than one beamed measurement; and (c) a light beam or its reflection from the target point is oriented and projected to form at least one side of a triangle.

(1) Note. Triangulation involves, for example, establishing a triangle where one side (i.e., the base) and the angles, which the two other sides form with the base, are determined.

(2) Note. This subclass does not necessarily require the use of a photodetector, but requires a projected beam.

(3) Note. This subclass includes, for example, apparatus that utilizes together a nonfixed axial source and a nonfixed axial line of sight for the sensing that is not found elsewhere, but that still requires only a single source for each point.

SEE OR SEARCH THIS CLASS, SUBCLASS:

3.09, where scanning is required to achieve angular measurement to a single point.

3.12, for photodetection remote from at least two source locations that are transmitting beams to be received by a photodetector.

9+, for triangulation with no projected beam and no photodetection. 372+, for distance measurement to define the dimensions of an adjacent, as opposed to remote, article that may involve triangulation to any one point.

SEE OR SEARCH CLASS

250, Radiant Energy,

201.6, for triangulation used to establish distance-related focus of the source onto a triangulating photodetector.

342, Communications: Directive Radio Wave Systems and Devices (e.g., Radar, Radio Navigation), for the use of similar

circuitry not requiring the same wavelength or radiation distinctions.

367, Communications, Electrical: Acoustic Wave Systems and Devices, for the use of similar circuitry not requiring the same wavelength or radiation distinctions.

396, Photography,

89+, where triangulation may be employed in the focus of a separate photos:graphic camera.