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Class Information
Number: 359/219
Name: Optical: systems and elements > Deflection using a moving element or medium (offsetting or changing at least a portion of the beam) > Using a periodically moving element (periodic change of optically reflecting, refracting or diffracting element) > Including reflective type moving element > Having multifaceted rotating element > With facets parallel to rotation axis > Having five or fewer facets
Description: Subject matter wherein the element has less than six facets.

Patents under this class:
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Patent Number Title Of Patent Date Issued
7118233 Polygon mirror drive motor Oct. 10, 2006
6937376 Scanning optical system Aug. 30, 2005
6833940 Method and apparatus for optical scanning capable of performing a high speed and high pixel density scanning Dec. 21, 2004
6735003 Method and apparatus for reducing artifacts in an imaging system May. 11, 2004
6583913 Multibeam scanner Jun. 24, 2003
6543694 Extended coverage barcode scanner Apr. 8, 2003
6449036 Sensor unit, process and device for inspecting the surface of an object Sep. 10, 2002
6185029 Optical scanner and electrophotographic printer employing the same Feb. 6, 2001
6094287 Wobble correcting monogon scanner for a laser imaging system Jul. 25, 2000
5986793 Optical apparatus Nov. 16, 1999
5982527 Inertial stabilization of rotational optical scanners Nov. 9, 1999
5962838 Barcode scanner with manually switchable scan patterns Oct. 5, 1999
5946124 Laser scanning unit having a noise reducing portion Aug. 31, 1999
5801870 Light exposure and illuminating apparatus Sep. 1, 1998
5757535 Optical scanner May. 26, 1998
5621561 Laser scanner incorporating variable focus mechanism for rapidly changing beam spot size Apr. 15, 1997
5619363 Laser optical system Apr. 8, 1997
5453870 Optical scanning system Sep. 26, 1995
5387996 Method of obtaining a narrow field of view scan Feb. 7, 1995
5373390 Optical scanning system Dec. 13, 1994
5363231 Light deflecting device Nov. 8, 1994
5315428 Optical scanning system comprising optical chopper May. 24, 1994
5309274 Optical beam scanning apparatus May. 3, 1994
5286961 Bar code reader producing two groups of vertical scan lines and two groups of inclined scan lines on a plane normal to the read window Feb. 15, 1994
5239403 Optical deflector device for deflecting laser beam Aug. 24, 1993
5235454 Light beam scanner Aug. 10, 1993
5196956 Beam deflector and laser beam printer using only two inclined reflecting surfaces Mar. 23, 1993
5194981 Light scanning apparatus Mar. 16, 1993
5179271 Compact optical scan pattern generator for bar code reading systems Jan. 12, 1993
5179464 Polygonal mirror with a reflection film and method for manufacturing the same Jan. 12, 1993
5157532 Post-objective type optical scanner Oct. 20, 1992
5153608 Skew and bow correction system for an image scanner Oct. 6, 1992
5136416 Optical scanning unit for use in laser beam printer or the like Aug. 4, 1992
5124830 Optical deflector device for deflecting laser beam Jun. 23, 1992
4848862 Laser beam scanner Jul. 18, 1989
4828375 Lens for scanning devices May. 9, 1989
4782228 High efficiency optical scanner with multiplexing means Nov. 1, 1988
4560862 System for optical scanning over a large depth of field Dec. 24, 1985
4527055 Apparatus for selectively viewing either of two scenes of interest Jul. 2, 1985
4516024 Automatically adjustable aperture stop for optical scanning system May. 7, 1985
4460240 Semiconductor laser scanning system Jul. 17, 1984
4444457 Process and device for the production of a telecentric light beam and use of the process Apr. 24, 1984
4418989 Apparatus for shifting the wavelength of light Dec. 6, 1983
4241257 Scanning microscopic apparatus Dec. 23, 1980
4215912 High speed scanning device for scanning the same area plural times by a beam deflected by a single deflecting surface Aug. 5, 1980
4196961 Optical apparatus for correcting the spherical aberration of a spherical concave mirror Apr. 8, 1980
4170398 Scanning microscopic apparatus with three synchronously rotating reflecting surfaces Oct. 9, 1979
4165149 Device for scanning an object with a light beam Aug. 21, 1979
4124269 Scanning system with improved radiation energy collecting capabilities Nov. 7, 1978
4121883 Scanning device for radiation beams Oct. 24, 1978

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