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5191463 |
Scanning optical system in which a ghost image is elminated
A scanning optical system is provided with a deflector for deflecting a light beam, a medium to be scanned by the light beam deflected by the deflector, and an imaging optical system disposed...
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5189533 |
Apparatus for optically reading information
An optical information reading apparatus for optically reading information recorded on a recording medium with a laser light beam emitted from a light source. The apparatus comprises a hologram...
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5184246 |
Scanning of moving objects using unique polygon mounted on carousel which rotates at twice polygon's speed
A polygon for reading and writing information, and for tracking industrial products on a rotating carousel is arranged so that each of its sides behaves effectively like a mirror mounted directly...
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5179465 |
Optical system for light beam scanning
A scanning optical system used for light beam scanning device is disclosed. The scanning optical system is disposed between a deflector for deflecting a light beam and a plane to be scanned. In the...
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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...
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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...
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5177632 |
Tracking system using a polygon of unique dimension or arbitrary polygon combined with sensors
A polygon (FIGS. 4to 6) has unique physical dimensions, i.e., its radius (R8') is correlated to a tracking radius (R13')(where objects are scanned) by a rule which creates an improved linear...
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5173798 |
Beam scanning apparatus with sensor for detecting beam position
A beam scanning apparatus comprises: a beam source for generating optical beam; a polygon mirror for deflecting the optical beam to scan a beam receiving surface; a beam receiving device, arranged...
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5173797 |
Rotating mirror optical scanner with grooved grease bearings
An optical scanner has grease bearings between the rotor and the housing. The grease bearings are grooved which tends to pump the grease back into the bearing cups when the optical scanner is...
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5173603 |
Focus changing apparatus and method for optical scanners
A focus changing apparatus and method for an optical scanner which can easily be adapted to existing optical scanners or can provide the front end for a new scanner. The laser beam focus changing...
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5170278 |
Return optical deflecting element, optical deflecting element and optical scanner
Reflecting faces constituting one or more reflecting face pairs are respectively inclined at 45 degrees with respect to the rotational axis of an optical deflecting element. The reflecting faces...
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5162938 |
Light scanning system
A light scanning system has a light source, a deflecting device, an anamorphic scanning lens having different refracting powers in a principal scanning plane and in a secondary scanning plane...
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5161047 |
Optical scanner for image recording apparatus
An optical scanner having a deflecting device for reflecting and deflecting a laser beam issued from a light source device with a reflective surface thereof, and image forming optics for focusing...
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5157535 |
Monolithic optical scanner
An optical system having a single, monolithic scan element as shown in the drawing in which surface 6 is concave, surface 7 is convex, surface 8 is convex, surface 9 is convex and the circumference...
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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...
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5155616 |
Scanning optical system
A scanning optical system has a light source for emitting a light beam; a condenser lens for changing the light beam from the light source to a parallel light beam; a connection holding member for...
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5153766 |
Postobjective optical scanner
A postobjective optical scanner comprising a polygonal optical deflector having a plurality of reflecting surfaces each being a curved surface varying in curvature from position to position...
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5151812 |
Passive energy diametric scanner
Diametric scanning of a forward target region, wherein each scan line proceeds from an edge of a circular field of view through the center to the opposite edge while the scan angle is advancing....
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5151810 |
Method for alignment of scan line optics with target medium
Positioning of a scan line (L) relative to a recording medium drum (15) of a polygon printer is established by independently adjusting blocks (35, 36) mounted on a scan line generating optics...
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5146360 |
Light beam scanning optical system
A light beam scanning optical system having a linear image forming optical system for converging a laser beam from a light source into linear images on the deflection reflecting surface of...
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5142403 |
ROS scanner incorporating cylindrical mirror in pre-polygon optics
The efficiency of a raster output scanning system is enhanced by replacing a folding mirror cylindrical lens in the pre-polygon optics with a single cylindrical mirror. The mirror is designed and...
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5138479 |
Light beam scanning apparatus and method of detecting a variation of a scanning speed of a light beam
A light beam scanning apparatus has a light source, a deflecting element for deflecting a light beam from the light source, such as a rotary polygon mirror, a drive component for driving the light...
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5138477 |
Light deflecting apparatus
In a light deflecting apparatus having a motor shaft rotatable at high speed, bearings have a suitable simple construction such that the whole apparatus can be reduced in size and weight.
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5136418 |
fθ lens system in optical scanner
In an fθ lens system in an optical scanner, an approximately parallel light beam from a light source device is formed as a linear image extending in a main scan-corresponding direction and is...
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5134514 |
Rotatable polygon mirror
The invention provides a rotatable polygon mixture having a body shaped in a form of polygon. At the axis of rotation of the body is provided a shaft hole, and to each side of said body is provided...
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5134513 |
Scanning optical system
A scanning optical system projects a light beam from a light source as a line spread function image in a principal scanning plane before the light beam is made incident onto a scanning deflector. A...
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5132524 |
Multi directional laser scanner
An multi directional laser scanner apparatus has a frame along with a plurality of lasers removably mounted in circular fashion to the frame for producing a plurality of light beams. A...
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5130840 |
Light scanning system
A light scanning system has a light source, a deflecting device, an anamorphic scanning lens having different refracting powers in a principal scanning plane and in a secondary scanning plane...
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5130838 |
Laser projection type display unit
A laser projection type display unit. A light modulator is provided between a laser light source and a galvanometer scanner. By cutting off the laser beam or modulating the amplitude of the laser...
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5115334 |
Optical scanning device
An optical scanning device comprising a light source which emits a luminous flux for irradiating a scanning surface and comprises a semiconductor laser element and an anamorphic ellipsoidal Fresnel...
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5114217 |
Double-reflection light scanner
A light scanning system is disclosed which reduces the effects of wobble without the need for complex, cumbersome, or expensive optical equipment. A light source is provided for generating an input...
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5113280 |
Method for mounting and adjusting a rotatable optical element polygon mirror or the like to a rotation shaft and apparatus for such method
An apparatus for adjusting the inclination of an optical element or the like is provided with a predetermined shaft, an optical element fitted to the predetermined shaft, a mounting seat for...
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5111340 |
Lens device
Laser light emitted from a light source is deflected in a predetermined direction by a rotary polygonal mirror to scan the surface of a photosensitive medium. A correction lens corrects the focal...
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5109297 |
Apparatus for reading a phosphor plate image
A radiation image reading apparatus using a storage phosphor plate as a radiation image record is disclosd which includes a light beam scanning device, detection device and control device. The...
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5105296 |
Method and apparatus for detecting beam spot shape
A method and apparatus for detecting the shape of a beam spot on a scanning plane in a scanning optical system having a constant scanning speed. When a relative moving speed of the light beam is...
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5097351 |
Simultaneous multibeam scanning system
A dual, simultaneous beam scanning system for simultaneously scanning two individually modulated adjacent scan lines on an internal drum imaging surface uses a deflector which varies the angular...
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5095383 |
Optical unit for use in a laser beam printer or the like
In an optical unit incorporated in 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 predetermined-size cross...
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5089908 |
Plywood suppression in ROS systems
A multiple diode laser array used in a ROS scanning system is modified to reduce the effects of undesirable spatial exposure variation at the surface of certain type of layered, semi-transparent...
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5089081 |
Adjustable pad assembly
An adjustable pad assembly is used for aligning a polygon of a laser optical system that is supported by a housing and requires precise alignment with respect to a base for proper operation of the...
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5089078 |
Apparatus for aligning an optical device
A polygon of a laser optical system is supported by a housing and requires precise alignment with respect to a base for proper operation of the optical system. A fixture has a base that is mounted...
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5080456 |
Laser scanners with extended working range
A bar code scanner is disclosed employing a laser source and scan mirror for generating a light beam for scanning a bar code symbol or the like. The working range for distance between the scanner...
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5069515 |
Optical deflector of air bearing type
An optical deflector of an air bearing type has a fixed shaft; a rotary shaft having a hollow portion fitted onto the fixed shaft; a support device disposed between an end portion of the fixed...
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5064262 |
Postobjective optical deflector
A postobjective optical scanner comprising a polygonal optical deflector (polygonal rotating mirror) having a plurality of convex reflecting surfaces each being a curved surface other than a...
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5064260 |
Optical scanning unit operating under changing temperature and moisture conditions
In an optical unit incorporated in a laser beam printer, a light beam generated by a laser diode is converted by a group of conversion lenses into a light beam having a predetermined-size cross...
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5063292 |
Optical scanner with reduced end of scan wobble having an even number of beam reflections
An optical scanning system reduces wobble at the ends of the scan line by twice reflecting a laser beam off a facet of a rotating polygon mirror, then passing the beam through a cylindrical scan...
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5052767 |
Optical beam scanning system
An optical beam scanning system is constructed with less optical elements. A light beam (B 1 ) of parallel rays passes through a first image-forming system (L 1 ). The first image-forming system...
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5046797 |
Light beam scanner with foreign matter removing feature
A light beam scanner which is adapted to reflect optical beams by a rotary polygonal mirror provided adjacent a free end portion of a rotary shaft which is supported rotatably by a bearing, thereby...
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5046796 |
Apparatus for correcting scanning beams on basis of tilting of surface segments of polygonal mirror used in scanning pattern drawing apparatus
An apparatus for correcting a scranning beam produced by a polygonal mirror tilting in small surface segments in each mirror surface segment caused by uneven mirror surfaces of the polygonal...
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5044710 |
Laser beam deflection apparatus
A laser beam deflection apparatus is comprised of a polygon mirror having a plurality of reflection surfaces, a laser beam incident on the reflection surfaces of the polygon mirror, and n number of...
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5039184 |
Optical beam scanner for bar-code
An optical beam scanner, for reading a bar-code, which comprises a housing (10) accommodating therein a beam generator (1) for projecting a laser beam (34) along a fixed axis, a rotary mirror (30,...
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