| |
 |
|
Class Information
Number: 250/230
Name: Radiant energy > Photocells; circuits and apparatus > Optical or pre-photocell system > Light valve (e.g., iris diaphragm) > Reflection type(e.g., mirror galvanometer)
Description: Subject matter in which the optical path between light source and photoelectric cell includes a reflective element, and in which the amount of reflection or the direction of reflection is varied so as to vary the intensity of the photocell illumination.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7427747 |
Optical image pickup apparatus for imaging living body tissue |
Sep. 23, 2008 |
| 7297934 |
Optical system |
Nov. 20, 2007 |
| 7161733 |
Remote sensing apparatus and a frequency analysis method of the remote sensing apparatus |
Jan. 9, 2007 |
| 7138622 |
Method and apparatus for monitoring light beams |
Nov. 21, 2006 |
| 7062973 |
Pressure gauge |
Jun. 20, 2006 |
| 7042368 |
Automated meter reader device having optical sensor with automatic gain control |
May. 9, 2006 |
| 7019667 |
System and method for accurate reading of rotating disk |
Mar. 28, 2006 |
| 6894271 |
Method for operating a positioning apparatus, and scanning microscope |
May. 17, 2005 |
| 6844952 |
Actuator-controlled mirror with Z-stop mechanism |
Jan. 18, 2005 |
| 6788807 |
Three dimensional information measurement method and apparatus |
Sep. 7, 2004 |
| 6784807 |
System and method for accurate reading of rotating disk |
Aug. 31, 2004 |
| 6776045 |
Bragg grating pressure sensor for industrial sensing applications |
Aug. 17, 2004 |
| 6768100 |
Continuous position calibration for servo controlled rotary system |
Jul. 27, 2004 |
| 6606115 |
Method and apparatus for monitoring the thermal characteristics of an image |
Aug. 12, 2003 |
| 6321010 |
Optical microstructure and method of manufacture |
Nov. 20, 2001 |
| 6271523 |
Optical sensor system and method for monitoring consumables |
Aug. 7, 2001 |
| 6246503 |
Optical barrier apparatus |
Jun. 12, 2001 |
| 6226126 |
Light beam mixer |
May. 1, 2001 |
| 6037583 |
Control system for a scanner drive |
Mar. 14, 2000 |
| 5917181 |
Profile measuring apparatus |
Jun. 29, 1999 |
| 5880464 |
Optical meter reader using a shadow |
Mar. 9, 1999 |
| 5841539 |
Three-dimensional measuring apparatus and three-dimensional measuring method |
Nov. 24, 1998 |
| 5672865 |
Timing device for controlling machinery and other servomechanical devices and method of manufacture therefor |
Sep. 30, 1997 |
| 5663825 |
Stabilized step/stare scanning device |
Sep. 2, 1997 |
| 5451775 |
Apparatus for detecting galvonmeter mirror movement of optical disc tracking servo system |
Sep. 19, 1995 |
| 5363232 |
Device for controlling luminous energy |
Nov. 8, 1994 |
| 5322999 |
Method and apparatus for precision control of galvanometer patterning system |
Jun. 21, 1994 |
| 5247173 |
Device for the acquisition of the instantaneous angular position of moving means and opto-mechanical systems incorporating such a device |
Sep. 21, 1993 |
| 5229603 |
Vibration detection apparatus |
Jul. 20, 1993 |
| 5223710 |
Optical angular position sensing system for use with a galvanometer |
Jun. 29, 1993 |
| 5159192 |
Encoder and scanning system using a scale having a non-uniform pitch |
Oct. 27, 1992 |
| 5136158 |
Angular displacement detecting device for floating body with integral magnetic path forming means |
Aug. 4, 1992 |
| 5136159 |
Angular displacement detecting device for floating body with integral magnetic path forming means |
Aug. 4, 1992 |
| 5126561 |
Angle displacement detector for optical image stabilization device |
Jun. 30, 1992 |
| 5117104 |
Angular displacement detecting device utilizing a tubular casing having a chamber wherein a fluoroliquid is sealed |
May. 26, 1992 |
| 5103089 |
Angular displacement detecting device |
Apr. 7, 1992 |
| 5103090 |
Optical angle measuring method and apparatus particularly for machine tools using polygons with light reflecting facets |
Apr. 7, 1992 |
| 5002348 |
Scanning beam optical signal processor |
Mar. 26, 1991 |
| 4889407 |
Optical waveguide sensor and method of making same |
Dec. 26, 1989 |
| 4888491 |
Device for measuring angular deviation of flat plate |
Dec. 19, 1989 |
| 4883954 |
Method of measuring optical radiation energy reflected by a reflection area |
Nov. 28, 1989 |
| 4859846 |
Dual-mode resonant scanning system |
Aug. 22, 1989 |
| 4806707 |
3-Dimensional digitizer pen |
Feb. 21, 1989 |
| 4801791 |
Pendulous compensator vibratory motion damping system |
Jan. 31, 1989 |
| 4792931 |
Optical seismic detector |
Dec. 20, 1988 |
| 4687920 |
Electronic circuit for determining the position of a light spot on a position-sensitive detector |
Aug. 18, 1987 |
| 4672199 |
Fiberoptic temperature/pressure sensor system |
Jun. 9, 1987 |
| 4659219 |
System for detecting the angular position of a mechanical device |
Apr. 21, 1987 |
| 4658134 |
Digital tape measure |
Apr. 14, 1987 |
| 4399393 |
Accelerator control for electric vehicles |
Aug. 16, 1983 |
|
|
|
