(under the class definition) Subject matter including structure to indicate or otherwise determine the direction the axis of a light beam from a headlight or other light projector; or including structure to determine at selected and fixed points the intensity of a light beam projected from a headlight or other light projector throughout the space where the light is projected, i.e., the contour pattern of the light beam.
(1) Note. This class provides for the direct analysis of the beam which is emitted from the light producer, as by
determining the direction pattern, or focusing of the beam. Class 33 provides for the mechanical sensing of the direction of a headlight without involving the light beam. However, where the mechanical sensing device involves some optical measuring, classification is in this Class 356. Class 362 provides for lamps where significant lamp structure is claimed in combination with a built-in optical structure. Class 324 provides for testing the electrical operating characteristics of electric lamps alone or in combination with light intensity, direction, pattern, or focusing tests of this Class 356.
SEE OR SEARCH THIS CLASS, SUBCLASS:
3+, for optical range finders in combination with light beam alignment or focusing apparatus.
124+, for the testing of a lens or reflective image former where apparatus similar to that used in these subclasses is utilized to determine the quality of the lens or the reflective image former.
138+, for determining generally the two dimensional alignment of an axis or line with respect to a plane, and particularly subclasses 141.1+ and 152.1+ for the photoelectric apparatus and subclass 154 for the viewing screen type of apparatus. 213+, for photometers generally and particularly subclasses 218 for the photoelectric type, and 229 for the visual comparison type.
264, for lamp alignment device of the light ray type and subclass 335, for means used in aligning an automobile headlight by establishing its relationship to the horizontal or the vertical.
324, Electricity: Measuring and Testing,
20+, for the combination of optical alignment or focusing test of a lamp with an electrical operating characteristic test of the lamp. See (1) Note above.
359, Optics: Systems (Including Communication) and Elements,
443+, for projection screens generally.
362, Illumination,
459+, for significant illumination apparatus for vehicle lighting purposes. Also see (1) Note above.
445, Electric Lamp or Space Discharge Component or Device Manufacturing, 4, and 64, for methods and apparatus for the positioning of filaments by optical projection means during the manufacture of lamps and electronic tubes.
