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Class Information
Number: 250/206.3
Name: Radiant energy > Photocells; circuits and apparatus > Photocell controlled circuit > Having means to generate positional information in at least one plane of a target moving relative to one or more photodetectors > Detection of positional information in two or more planes (e.g., azimuth and elevation; hour angle and declination) > With moving reticle in optical path
Description: Subject matter in which a moving, e.g., rotating or oscillating, apertured or patterned element is in the optical path between the target and photodetector(s) to modulate the light reaching the photodetector(s) from the target.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6724855 |
X-ray flat panel detector |
Apr. 20, 2004 |
| 6310338 |
Solar altitude detector |
Oct. 30, 2001 |
| 5567976 |
Position sensing photosensor device |
Oct. 22, 1996 |
| 5465144 |
Remote tracking system for moving picture cameras and method |
Nov. 7, 1995 |
| 5347136 |
Conduit construction laser system and laser beam receiver |
Sep. 13, 1994 |
| 4710619 |
Apparatus for generating a signal providing information regarding a radiating source, especially an infrared source |
Dec. 1, 1987 |
| 4493991 |
Techniques for locating beams within large area detectors |
Jan. 15, 1985 |
| 3981588 |
Means and method for determining meridian location and azimuth |
Sep. 21, 1976 |
| 3957377 |
Method of and apparatus for sensing the position of a body |
May. 18, 1976 |
| 3950099 |
Two-axis image motion detector |
Apr. 13, 1976 |
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