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7742189 Optical scanning apparatus  
Data concerning misalignment of beams is measured and held in an optical scanning apparatus before the optical scanning apparatus is incorporated in an image forming apparatus. The optical scanning...
7688342 Image forming apparatus and control method thereof  
An image forming apparatus includes a photosensitive member, a light source for which intervals between spots formed on the photosensitive member by respective beams emitted from a plurality of...
7646538 Methods and apparatus for creating apertures through microlens arrays using curved cradles  
Methods for creating apertures in a layer on a back side of a substrate that includes a microlens array on a front side thereof include curving the substrate into a cylindrical surface segment that...
7355773 Optical scanning apparatus and image forming apparatus using same  
An optical scanning apparatus includes a light source device, a rotating polygon mirror, a first optical system, and a second optical system. The light source device has at least one light emitter....
7312920 Confocal microscope  
A confocal microscope including a first condenser optical system that condenses light from a light source onto a sample; a pinhole member having a pinhole; a second condenser optical system that...
7252394 Laser projection display and illumination device with MEMS scanning mirror for indoor and outdoor applications  
A projection display system includes a light source emitting a light beam, and a reflecting mirror system for scanning the light beam over an image to illuminate the image. The light source can be...
7193762 Scanning optical apparatus and image forming apparatus using the same  
A scanning optical apparatus having stable optical performance even if the characteristic of a vertical cavity surface emitting laser is fluctuated due to increase in drive current, and an image...
7182466 Projection optical system and optical system  
A projection optical system includes an optical modulation unit which outputs modulated light for displaying an image, an optical scanning unit on which the modulated light output from the optical...
7002717 Apparatus for beam deflection  
The invention concerns an apparatus for beam deflection, in particular for scanning microscopy, a light beam being deflectable by a mirror arrangement that is alternatingly rotatable by a rotary...
6683707 Scanning optical apparatus and image forming apparatus using the same  
An object of the present invention is to provide a scanning optical apparatus that is capable of suppressing, to a minute amount, scanning line bending caused by rotational decentration of a single...
6621610 Light deflective optical system  
The present invention relates to a light deflective optical system without necessity of use of a plane mirror of which width is narrow, which can prevent variation in pitch of scan lines even with...
6400485 Air-dynamic bearing apparatus and polygon scanner motor  
To provide an air-dynamic bearing apparatus having a radial dynamic bearing and thrust dynamic bearings by a small number of parts by using a material which is easy to fabricate and a polygon...
6178031 Raster output scanning system having scan line non-linearity compensation means  
The pixel clock of a raster output scanning (ROS) system modulates an emitted light beam to provide pixel placement along a scan line. A method calculates the pixel clock frequency shifts to...
6151152 Reference frequency and facet to facet error correction circuit  
A reference frequency and facet to facet correction circuit utilizes a phase locked loop which includes a digital phase detector to measure the time difference between the end of scan and the end...
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...
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...
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...
5946125 Reflective surface coating for a uniform intensity of a polarized beam of a rotating polygon mirror optical scanning system  
A three layer dielectric material coating of silicon dioxide/zinc selenide/silicon dioxide is deposited on the reflective surface of the facets of a rotating polygon mirror to provide a uniform...
5920361 Methods and apparatus for image projection  
Method and apparatus for a multi-application, laser-array-based image system utilizes three linear laser arrays. Each linear array generates multiple (N>1) parallel output beamlets at one of the...
5907424 Rotating mirrors  
Rotating mirrors and methods for producing rotating mirrors with reduced variation in centrifugal distortion are disclosed. Pins (52) having a density different from that of the remainder of the...
5793515 Optical scanning apparatus  
An optical scanning apparatus includes: a rotational polygonal mirror, on the side of which a plurality of reflecting surfaces are provided, the reflecting surfaces deflecting a beam of incident...
5692287 Method of manufacturing a metal polygon mirror  
A metal mirror manufacturing method effectively uses the precision of a polygon mirror blank obtained by press working by omitting a peeling step, thereby improving the productivity. In order to...
5680242 Scanning optical apparatus  
A scanning optical apparatus is provided with a light source, a deflector and an aperture. A light beam generated from the light source is a linearly polarized light the polarized direction of...
5668590 Optical beam scanning system with rotating beam compensation  
An optical arrangement for an optical scanning apparatus which can record a plurality of high precision information concurrently, provides for a laser beam emitted from a single light source to be...
5625482 Scanning optical apparatus  
A laser scanning apparatus includes a deflecting member such as a polygonal mirror for deflecting a laser beam, a lens holder for integrally holding a plurality of lenses, the plurality of lenses...
5557446 Optical scanning apparatus having tilted scanning lens system  
In an optical scanning apparatus, there are arranged a light source, a first optical system for converting a light beam emitted from the light source to a convergent light beam, a deflector for...
5521739 Raster output scanner for reducing color misregistration  
There is disclosed a raster output scanner for a color printing system which utilizes an indexed rotating polygon mirror in order to scan each given scan line from each latent image by a given...
5461505 Polygon mirror  
A polygon mirror includes a polygon base having a plurality of attaching surfaces, a plurality of base plates each of which is fixed to each of the attaching surfaces of the base and has a...
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...
5422753 Binary diffraction optical element for controlling scanning beam intensity in a raster output scanning (ROS) optical system  
A binary diffractive optical element provides uniform intensity for the scanning beam of a raster output scanning (ROS) optical system by diffracting the excess intensity of the beam.
5381259 Raster output scanner (ROS) using an overfilled polygon design with minimized optical path length  
In an overfilled ROS polygon system, the total optical path length is minimized by focusing modulated laser beams onto the polygon facets in the cross scan direction by placing a single cylindrical...
5343326 Compact ros imaging system  
The pre-polygon scanning path length of a raster output scanning system is reduced by replacing a required cylinder lens, or lenses, with two cylindrical mirrors. One mirror with a negative,...
5337182 Optical Scanner  
An optical scanner includes a varifocal semiconductor laser light source for emitting a laser beam and displacing a substantial divergent start point from a direction corresponding to a minimum...
5293266 Optical beam scanning apparatus  
An optical beam scanning apparatus wherein a resin polygonal scanner deflects a light beam radiated from a laser diode as the polygonal scanner is rotating. The polygonal scanner is pressed by a...
5257138 Optical unit for use in an image forming apparatus  
In an optical unit of the present invention, a laser element and a glass lens are contained in a lens barrel. The ray axis of the laser beam is aligned with the optical axis of the glass lens...
5248997 Facet reflectance correction in a polygon scanner  
In a laser imaging apparatus including a multifaceted polygon scanner, a technique for correcting facet reflectance differences to effect uniform laser light power output for all scanner facets. A...
5235183 Optical scanner using tilted film media  
The method and apparatus for using a light beam to scan media, particularly radiographic film media, for digitization wherein the scanning beam and the media transport path are optimized to...
5223700 Bar code reader having a polygon mirror providing different scan line lengths  
A bar code reader reads a bar code by scanning a laser beam on a screen on which the bar code is displayed. The bar code reader has a beam scanning device for scanning the laser beam irradiated...
5198919 Narrow field or view scanner  
This invention discloses a narrow field of view scanner (10) incorporating two multi-faceted polygon scanning wheels (12, 16) having a slightly different number of facets (14, 18). Each scanning...
5189546 Scanning optical system with offset lens component  
An optical scanning system is disclosed having a polygon mirror which deflects a light beam from a semiconductor laser in a principal scanning direction, and an fθ lens which forms an image on a ...
5181137 Light scanning apparatus  
A light scanning apparatus comprises a light source having a plurality of light emitting unit, a deflector for deflecting a plurality of light beams emanated from the light source, a first optical...
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...
RE34156 Scanning optical system for use in a laser beam printer  
An optical system particularly for a laser beam printer comprising a semiconductor laser, a collimating lens, a cylindrical lens having curvature in the sub-scanning cross section, a deflector and...
5170279 Method and apparatus for calibrating and improving linearity of system for scanning moving objects  
A method for calibrating and improving linearity of a system for scanning moving objects. A type of scanning system and a set of parameters to define the scanning system are selected. A set of...
5157533 Multi-beam optical system  
A multi-beam optical system is provided with reflecting mirrors and separating mirrors on optical paths of light beams for each color so that the difference of the numbers of reflections of the...
5157536 Optical apparatus having spring holding means for lenses  
An optical apparatus according to this invention has an optical member for scanning light beams, a datum surface to which the optical member is fixed, an elastic member for fixing the optical...
5148285 Image display apparatus with increased raster scan rate of laser beams  
An image display apparatus having light beam sources for generating light beams, an optical modulator for modulating the light beams by image signals to be projected, a deflection device for...
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...
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...
5136412 Fθ lens and scanning optical system using the same  
An fθ lens having a skew correction function for use in a scanning optical system comprises a first lens having a negative power in a main scan plane, a second lens having a positive power in the ...
Matches 1 - 50 out of 141 1 2 3 >