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| Number | Title | Issue Date |
| 7118233 | Polygon mirror drive motor A polygon mirror drive motor according to the present invention comprises a stator and a rotor having a hexahedron-shaped polygon mirror and a rotation drive shaft. The polygon mirror in one preferred mode is comprised of two square faces that are parallel with each... | 10/10/2006 |
| 7108691 | Flexible scanning beam imaging system The present invention is directed to a flexible scanning beam imaging system. In specific embodiments, the scanning beam imaging system comprises a mask, and an objective lens having an objective lens focal point disposed between the mask and the objective lens. A f... | 09/19/2006 |
| 6937376 | Scanning optical system There is provided a scanning optical system which includes a light source, a line-like image forming optical system, a polygonal mirror, and an imaging optical system. The line-like image forming optical system forms a line-like image extending in the main scanning ... | 08/30/2005 |
| 6833940 | Method and apparatus for optical scanning capable of performing a high speed and high pixel density scanning An optical scanning apparatus using an underfilled or overfilled optical system includes a number M of light sources, first, second, and third optical scanning lens systems, and a rotary polygon mirror. The number M of light sources emit a laser light beam. The firs... | 12/21/2004 |
| 6735003 | Method and apparatus for reducing artifacts in an imaging system A method and apparatus for reducing artifacts in an imaging system by directing a stream of air onto the beam deflection assembly of the imaging system. An air displacement system, such as a fan assembly or the like, is oriented to direct, a stream of air onto the r... | 05/11/2004 |
| 6583913 | Multibeam scanner A multibeam scanner for scanning an image area with a plurality of laser beams, comprising a plurality of beam emitting points that emit a plurality of laser beams reaching the image area with respective time lags therebetween, a time lag determination un... | 06/24/2003 |
| 6543694 | Extended coverage barcode scanner A spinner for a barcode scanner includes a plurality of mirror facets arranged oppositely in pairs in a polygon, with adjoining facets having different angles of inclination and different lengths for reflecting a laser beam in correspondingly different, v... | 04/08/2003 |
| 6449036 | Sensor unit, process and device for inspecting the surface of an object A sensor unit (50), a device, and a process for inspection of a surface (10', 10Ɗ) of an object (10) for the purpose of identifying surface characteristics, such as structural defects. The device contains an emitting module (51) and a receiving module (5... | 09/10/2002 |
| 6185029 | Optical scanner and electrophotographic printer employing the same An optical scanner comprises a light source, a polygon mirror having plural light deflection faces for deflecting a light flux emitted from the light source, a first optical system for introducing the light flux emitted from the light source to the polygo... | 02/06/2001 |
| 6094287 | Wobble correcting monogon scanner for a laser imaging system Disclosed is an optical scanner assembly for producing an image on imaging material positioned on an internal surface of a curved film platen. The scanner assembly includes a light source for producing a light beam representative of the image to be produc... | 07/25/2000 |
| 5986793 | Optical apparatus An optical apparatus has a holder which integrally holds a light source for emitting a divergent beam, and a finite focus lens (or a collimator lens) for converting the divergent beam to a convergent one (or a parallel one). The holder is made of a materi... | 11/16/1999 |
| 5982527 | Inertial stabilization of rotational optical scanners Method and apparatus are disclosed for stabilizing an optical scanner having a rotational axis and a substrate with facets which are generally pyramidal, the outer diameter of the facets being proximate to a base plane which is generally perpendicular to ... | 11/09/1999 |
| 5962838 | Barcode scanner with manually switchable scan patterns A scanner with multiple modes of operation producing two or more distinct scan patterns, with each scan pattern optimized for different modes of operation with a manually actuated switching mechanism whereby the operator may readily select a desired scan ... | 10/05/1999 |
| 5946124 | Laser scanning unit having a noise reducing portion A laser scanning unit includes an emitting portion for emitting laser beams, a deflecting portion having a plurality of mirror surfaces at its side portions to deflect the laser beams upon a predetermined position of a pickup surface by rotation of a pred... | 08/31/1999 |
| 5801870 | Light exposure and illuminating apparatus A light exposure illuminating apparatus is provided which, employing harmonics of a continuously outputted laser beam, is small-sized, inexpensive and free from speckles and which achieves a high light source utilization efficiency. Specifically, a harmon... | 09/01/1998 |
| 5757535 | Optical scanner An optical scanner in which light beams from a light source are made incident in such a manner as to extend over a plurality of reflecting surfaces of a rotating polygon mirror, comprising: a light source; a first optical system which causes at least dive... | 05/26/1998 |
| 5621561 | Laser scanner incorporating variable focus mechanism for rapidly changing beam spot size An apparatus for rapidly varying the spot size of a scanned imaging laser beam comprises a focusing device (e.g. focussing and collimating lens arrangement) and a beam displacement control device (e.g. a rotary actuator scanner mirror or linear actuator).... | 04/15/1997 |
| 5619363 | Laser optical system A laser optical system for scanning a laser beam using a rotary polygonal mirror made of plastics. In the laser optical system, a portion close to the edge on the side along the rotary direction of the mirror surface of the rotary polygonal mirror made of... | 04/08/1997 |
| 5453870 | Optical scanning system An optical scanning system is provided which includes a light source, a scanning deflector which deflects a bundle of rays emitted from the light source, and a scanning lens system which converges the deflected bundle of rays onto an image surface to form... | 09/26/1995 |
| 5387996 | Method of obtaining a narrow field of view scan Disclosed is a scanning device (10) having a very fast raster scan and a small angle field of view. The scanning device (10) incorporates a rotating polygon scanning wheel (12) in which a beam of light (24) is reflected off of a first facet (14') of the w... | 02/07/1995 |
| 5373390 | Optical scanning system The present invention relates to an optical scanning system for deflecting a light beam from a light source by a rotating deflector, reflecting the deflected light beam onto an fθ mirror having fθ characteristics, and focussing the reflected light beam ... | 12/13/1994 |
| 5363231 | Light deflecting device A light deflecting device for deflecting a light beam comprises a rotational mirror having two reflecting surfaces for reflecting the light beam, a rotational mirror mounting portion, biasing means for urging the rotational mirror against the mounting por... | 11/08/1994 |
| 5315428 | Optical scanning system comprising optical chopper Optical scanning system to scan a code on an object comprising a laser source (1), a laser beam shaper (2) receiving a laser beam from the laser source and focussing the laser beam on the object, a mirror polygon (4) having facets (6-9), of which at least... | 05/24/1994 |
| 5309274 | Optical beam scanning apparatus An optical beam scanning apparatus of this invention includes rotary optical element rotating on an axis of rotation and guiding optical beams incident parallel to the axis of rotation to a direction rectangular to the axis of rotation so as to scan a cyl... | 05/03/1994 |
| 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 In a bar code reading apparatus, a laser beam emitted from a laser beam source disposed in a casing is reflected by a rotational mirror to scan a bar code. The reflected laser beam is reflected by a fixed scan mirror having four mirror members continually... | 02/15/1994 |
| 5239403 | Optical deflector device for deflecting laser beam An optical deflector is employed in an optical unit incorporated in a laser beam printer. The optical deflector reflects a laser beam, which is generated by a laser diode toward a photosensitive body and is made to have a cross section of desirable size b... | 08/24/1993 |
| 5235454 | Light beam scanner A light scanning device has a laser beam generator, a reflecting mirror supported by a rotatable device and a driving mechanism for driving the rotatable device. The rotatable device includes a stator having a plurality of electrodes and a rotor having a ... | 08/10/1993 |
| 5196956 | Beam deflector and laser beam printer using only two inclined reflecting surfaces A beam deflecting device for scanningly deflecting a beam, comprising a rotational mirror for reflecting the light beam, the rotational mirror having two opposite side surfaces effective to reflect the beam, wherein only the two surfaces are used for scan... | 03/23/1993 |
| 5194981 | Light scanning apparatus A light scanning apparatus is disclosed having: a light source portion, a correction deflecting element for finely deflecting a light beam emitted by the light source portion in an auxiliary scanning direction, a scan deflector for deflecting the light be... | 03/16/1993 |
| 5179464 | Polygonal mirror with a reflection film and method for manufacturing the same A polygonal mirror includes a base body having a circumferential surface composed of a plurality of plane surfaces or a columnar surface, a surface element, formed on the circumferential surface of the base body with a synthetic resin, whose circumferenti... | 01/12/1993 |
| 5179271 | Compact optical scan pattern generator for bar code reading systems A compact optical scanning system includes a rotating polygon having a plurality of curved mirror portions and a plurality of mirror facets, a collection mirror member having a pair of reflective surfaces and a source of scanning light beams which project... | 01/12/1993 |
| 5157532 | Post-objective type optical scanner A post-objective type optical scanner in which optical flux is converted to condensed light or diffused light by a lens and then scanned on a scanning surface by an optical deflector is constituted by a light source, an optical scanner for leading the flu... | 10/20/1992 |
| 5153608 | Skew and bow correction system for an image scanner A skew and bow correction system for a line of beam scanning from a source across a photosensitive surface comprises at least one optical element, having an axis along the line of beam scanning. The principal plane of the optical element at the midpoint o... | 10/06/1992 |
| 5136416 | Optical scanning unit for use in laser beam printer or the like In an optical unit for a laser beam printer, a laser beam generated by a laser diode is converted by a group of conversion lenses into a laser beam having a cross section of predetermined-size. The laser beam is directed toward a photosensitive body by a ... | 08/04/1992 |
| 5124830 | Optical deflector device for deflecting laser beam An optical deflector is employed in an optical unit incorporated in a laser beam printer. The optical deflector reflects a laser beam, which is emitted by a laser diode and is made to have a cross section of desirable size by a group of conversion lenses,... | 06/23/1992 |
| 4848862 | Laser beam scanner A laser beam scanner comprising a scanning window through which scanning beams are emitted, a plurality of hologram layers constituting the scanning window, and an optical system for impinging a laser beam on the hologram layers in a manner such that the ... | 07/18/1989 |
| 4828375 | Lens for scanning devices It is a lens comprising three elements for a scanning device; the lens is particularly for providing a linear scanning. A beam enters the lens from its front focus by rotating a constant angular velocity, will become a beam in parallel with the axis of th... | 05/09/1989 |
| 4782228 | High efficiency optical scanner with multiplexing means An improved optical system having an opto-mechanical scanner for increasing the duty cycle of the scanner while maintaining a constant optical aperture throughout the scan. Two alternating optical paths are provided between the scanner and a transducer by... | 11/01/1988 |
| 4560862 | System for optical scanning over a large depth of field A system for optically scanning objects, particularly bar codes over a large depth of field, uses a incandescent light source to illuminate the bar code and scans the field using a rotating polygon having mirrors with different curvature on different face... | 12/24/1985 |
| 4527055 | Apparatus for selectively viewing either of two scenes of interest Either of two scenes of interest may be detected by use of a scanning sensor having a rotatable polygonal scanning mirror coupled to receive incident radiation from such scenes of interest. Apparatus is included for directing such incident radiation onto ... | 07/02/1985 |
