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6115165 |
Optical scanning apparatus
An optical scanning apparatus for simultaneously scanning a plurality of light beams. In the apparatus, four light beams emitted from two light emitting portions are allowed to sequentially pass...
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6115164 |
Scanning optical system
Disclosed is a scanning optical system including a light source that emits a light beam, a deflector that deflects a light beam emitted from the light source to scan in a predetermined direction,...
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6109750 |
Method for three-dimensional imaging representation on a large-screen projection surface using a laser projector
For three-dimensional image representation on a large-screen projection surface by means of a multimode or, respectively, monomode laser projector, in the first case it is proposed to direct the...
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6108116 |
High precision collimating system
A collimating system utilizes a Rainbow® disk for holding and adjusting the position of the collimating lens. By applying a voltage to the two surfaces of the Rainbow® disk, the disk changes...
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6108115 |
Scanning optical system
A scanning optical system includes a light source, an optical deflector for deflecting a laser beam emitted from the light source, a first optical element for collimating the laser beam emitted...
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6104524 |
Optical scanning device
A polygon mirror 36 have reflecting surfaces being arrayed such that the reflecting surfaces each having coatings 38 at both ends thereof and the reflecting surfaces having no coating are...
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6104523 |
Dual beam double pass raster output scanner
A dual infrared beam raster scanning system has overfilled facets on the rotating polygon mirror and a double pass through a two cylindrical lens element f-theta lens group. The raster scanning...
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6104522 |
Optical scanning apparatus with controlled sag and ghost
An optical scanning apparatus includes a light source, a first optical system which includes a coupling lens for coupling a beam from the light source, a polygon mirror for deflecting the beam from...
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6104521 |
Scanning optical systems
A scanning optical system includes a light source for emitting a beam of light and a first optical system that changes a cross-sectional shape of the beam into an oblong shape along a main scanning...
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6104519 |
Multi-beam exposure unit
This invention has as its object to provide an image forming apparatus which can provide a color image free from any color misregistration with low cost, and a light scanning unit suitable for the...
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6101020 |
Optical scanner
An optical scanner is provided that reduces chromatic aberration (focus error) due to mode hopping of a semiconductor laser light source and that can give high-resolution output applicable to...
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6101018 |
Light beam scanning optical apparatus
A light beam scanning optical apparatus in which is capable of switching over the image density. The light beam scanning optical apparatus comprises a light source unit having at least three light...
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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...
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6091533 |
Reflection type scanning optical system
Disclosed is a scanning optical system, which is provided with a light source that emits a light beam, a deflector that deflects the light beam emitted by the light source to scan along a main...
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6088167 |
Optical scanning apparatus
In an optical scanning apparatus for causing a luminous flux from a rotary polygon mirror 4 to form an image on a surface to be scanned 6, a concave lens 5a functions not only as one constituent of...
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6088146 |
Scanning optical system and a scanning optical apparatus
In a scanning optical system in which a plurality of light beams emitted from a plurality of light sources are, after being formed into beams converging in a predetermined manner, deflected by a...
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6084699 |
Multi-beam exposure unit
This invention has as its object to provide an image forming apparatus which can provide a color image free from any color misregistration with low cost, and a light scanning unit suitable for the...
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6084698 |
Scanning system
Disclosed is a scanning system having a light source, a collimator lens, a scanning unit and a scanning objective. The present invention is distinguished by that for the correction of...
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6084696 |
Laser scanning optical system
Disclosed is a scanning optical system for emitting a scanning beam onto a surface to be scanned. The scanning optical system is provided with a laser source that emits a laser beam, a deflector...
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6081364 |
Laser light source for emitting a plurality of laser beams, method adjusting focusing of the laser light source, and scanning optical system
The laser light source includes a laser light emitting device for emitting a plurality of laser light beams, a condenser lens for condensing the laser light beams, an interval adjusting unit for...
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6078419 |
Optical scanning apparatus with design flexibility
An optical scanning apparatus includes a light source unit for emitting a light beam, an image-forming lens for imaging the light beam in a main-scanning direction, a beam deflector for reflecting...
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6075637 |
Laser beam scanning optical system
A laser beam scanning optical system composed of a relatively small number of lenses achieves proper correction of lateral chromatic aberration and offers superior optical characteristics. In this...
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6075636 |
Optical scanning device
An optical scanning device comprises a multi-faceted rotating polygon mirror for deflecting an incident beam in main scanning direction, a first light source for bringing a first beam into...
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6067182 |
Optical scanning device
An optical scanning device for scanning over a scanned surface in a main scanning direction with a plurality of light beam at the same time, which comprises a light source section having a...
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6067127 |
Method and apparatus for reducing the rotation rate of mirrors in a high resolution digital projection display
A projection display system using a laser beam reflected from a rotating mirror, where the rotation rate of the mirror is reduced. During a first rotational period the beam is reflected from the...
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6064130 |
Motor having dynamic pressure bearing, and rotator device having the motor as driving source
A dynamic pressure bearing having a reduced manufacturing time and cost is produced using a single dynamic pressure generating groove. A motor having a dynamic pressure bearing according to one...
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6061162 |
Multi-beam exposure unit
This invention has as its object to provide an image forming apparatus which can provide a color image free from any color misregistration with low cost, and a light scanning unit suitable for the...
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6057964 |
Process for imaging image points of a video picture and associated apparatus
In a process for imaging image points of a video picture by means of a light bundle which is controlled in intensity with respect to the brightness of the image points and which is deflected and...
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6057953 |
Dual beam double pass raster output scanner
A dual infrared beam raster scanning system has overfilled facets on the rotating polygon mirror and a double pass through a two cylindrical lens element f-theta lens group. The raster scanning...
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6055084 |
Multi-beam exposure unit
This invention has as its object to provide an image forming apparatus which can provide a color image free from any color misregistration with low cost, and a light scanning unit suitable for the...
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6055083 |
Optical scanning unit module and optical scanning system adopting the same
An optical scanning system for a printer including a shaft rotated by a driving unit, a plurality of rotary polygon mirrors installed on the shaft and spaced apart by a predetermined distance, a...
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6055010 |
Method and apparatus for controlling operation of a printer
A printer for use in exposing a photosensitive material and method of operation thereof. The printer includes a rotatable polygon mirror having a plurality of adjacent facets. The mirror includes a...
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6052212 |
Method and apparatus for correcting coma in a high resolution scanner
A method of correcting a scanning device's reflective face's pyramid error as well as coma in the cross scan direction of an optical scanning system comprising the steps of: focusing a beam of...
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6049409 |
Optical scanning device and an image forming apparatus with the same
A laser beam that is emitted from a light source is reflected by a first mirror, and then incident on each facet of a polygon mirror. The laser beam is moved for scanning in the fast scan direction...
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6049408 |
Optical scanning apparatus
An optical scanning apparatus for simultaneously scanning a plurality of light beams. In the apparatus, four light beams emitted from two light emitting portions are allowed to sequentially pass...
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6049406 |
Scanner
A scanner for the acquisition of optical information, in particular bar codes, is proposed, which has a laser device (3), a receiving device (23), which detects laser light (25) reflected from the...
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6046835 |
Scanning optical apparatus
In a scanning optical apparatus, a light beam emitted by a light source is caused to be obliquely incident on a deflection surface of an optical deflector in a sub scanning section through an...
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6038053 |
Color image forming apparatus
A color image forming apparatus includes a light source, a light deflector for deflecting a light beam emitted by the light source, an image carrier, an optical system for guiding the light beam...
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6038051 |
Light scanning device, optical device, and scanning method of optical device
A light scanning device deflects a plurality of light beams by a deflecting means performs divided scanning on a single scanning line on a photoconductor with the plurality of deflected light...
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6034806 |
Light source device and light beam scanning optical apparatus
A light beam scanning optical apparatus is provided which simultaneously converges a plurality of light beams on different locations in a scanning surface and thereby simultaneously writes a...
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6031651 |
Scanning optical apparatus
A scanning optical apparatus has a stationary shaft and a rotary sleeve rotatably fitting to each other. The apparatus is arranged to deflection-scan a light beam by rotating a rotary polygon...
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6031650 |
Light deflecting apparatus and deflection scanning apparatus using the same
In a light deflecting apparatus, a sleeve formed of ceramic material is relatively rotatably fitted onto the periphery of an axis of ceramic material, a rotary polygonal mirror is mounted to a...
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6028688 |
Scanning optical system
A scanning optical system includes a light source for emitting a beam of light and a first optical system that changes a cross-sectional shape of the beam into an oblong shape along a main scanning...
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6023059 |
Dual format pre-objective scanner
A dual format pre-objective scanner optionally, usable as a laser printer, having an incident beam from input optics incident on a polygon tower which is comprised of a first polygon and a second...
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6008925 |
Light beam scanning apparatus and method
A light beam scanning apparatus employs a movable reflector (32) having a large number of flat reflective sides (44) and a deflector (16) which shifts the light beam (10) at high speed across a...
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6005703 |
Optical system for light beam scanning
An optical system for light scanning devices in which a beam of light travels from an origin to an object along a light path and has along that path a scan direction and a cross-scan direction. The...
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6002506 |
Optical deflector and beam scanner using the same
An optical deflector of the present invention comprises: a mirror 20 for reflecting light; a yoke 24 for rotatably holding the mirror 20 via a plate spring 21; a coil 27 and a magnet 27 for...
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5999302 |
Polygon scanner having a fluid film bearing and active correction of cross-scan and in-scan errors
A polygon scanner utilizing a fluid film bearing and method for its use in a flat field imaging device having a relatively large format size, a very high scan rate and high resolution. The polygon...
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5999301 |
Optical scanning device
A laser bar code scanner employing a retroreflector in combination with a rotating polygon reflector to increase scan width and reduce curvature in the scanning beam.
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5995269 |
Optical unit for optically scanning an information surface, and optical scanning arrangement including the optical unit
An optical unit for optically scanning a surface, particularly an information surface of a recording medium. The unit may include a frame, a radiation source unit, a rotatable mirror unit, and an...
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