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| Number | Title | Issue Date |
| 7561319 | Optical scanning device and image forming apparatus using the same An optical scanning device includes a rotary polygonal mirror, an input optical system for direct a light beam from a light source to a deflecting surface of the rotary polygonal mirror, and an imaging optical system for imaging the deflected light beam on a scan su... | 07/14/2009 |
| 7542190 | Tandem laser scanning unit includes an optical scanning lens includes at least one sub-scanning cross-section having an aspherical surface in a sub-scanning direction to reduce a curvature of the scanning line A tandem laser scanning unit (LSU) is provided. The tandem LSU includes a light source, a beam deflector, and an optical scanning lens. The beam deflector rotates on a light-emitting path of the light source to simultaneously deflect different light beams obliquely ... | 06/02/2009 |
| 7538925 | Optical scanner including a lens surface that does not have a curvature in the sub-scanning direction and a line describing this surface in the sub-scanning direction has a tilt which varies depending on a location of the line in the main scanning direction, the tilt of the line defining an angle which is measured with respect to the sub-scanning direction, and an image forming apparatus including the lens An optical scanner including a plurality of light source units outputting a corresponding light beam, a light deflector having a deflecting surface that deflects the light beams output from the light source units, and a scanning optical system that condenses each li... | 05/26/2009 |
| 7525710 | Scanning and imaging optical system, optical scanner, and image forming apparatus with lenses of different signs and refractive index distribution increasing toward rim A scanning and imaging optical system that condenses beams of light deflected by an optical deflector toward a surface to be scanned to form a light spot for optical scanning on the surface includes plurality of scanning lenses. Among the scanning lenses, at least t... | 04/28/2009 |
| 7477437 | Laser scanner In a main-scanning direction, light incident on a resonance mirror is convergent light and a first lens of a second optical system has a negative refractive power. Consequently, even with a small angle of deflection, the distance from the resonance mirror to a photo... | 01/13/2009 |
| 7450285 | Laser projection apparatus A laser projection apparatus PJ includes: laser devices; incident optical systems, each of which is supplied with light beam from the laser device; a scanning device for two-dimensionally scanning the light beam; and a projection optical system for projecting the li... | 11/11/2008 |
| 7433109 | Scanning optical system and scanning optical device There is provided a scanning optical system used with a deflection mirror that produces sinusoidal vibrations. The scanning optical system includes a first lens having a positive power, and a second lens having a negative power. In this configuration, the first lens... | 10/07/2008 |
| 7428088 | Optical scanning apparatus and method for adjusting the same An optical scanning apparatus which is free from any deterioration of drawing performance and which can be miniaturized and simplified in overall configuration, and an image forming apparatus using the optical scanning apparatus are provided. The optical scanning ap... | 09/23/2008 |
| 7414765 | Optical scanning device and image forming apparatus using the same An optical scanning device deflects, by a common optical deflecting part, a plurality of groups of light beams emitted from a plurality of light sources and directs, by a scanning and imaging optical system, the groups of deflected light beams to respective scan sur... | 08/19/2008 |
| 7397620 | Image reading apparatus using image reading lens An image reading apparatus with an image reading lens configured to reduce a field curvature and a magnification error in the sub-scan direction, includes a photoelectric conversion element having picture elements arrayed in the main-scan direction, and an image rea... | 07/08/2008 |
| 7397591 | Optical scanner and image forming apparatus An optical scanner includes a light source, an optical coupler, an optical line image unit, a deflector, and an optical scanning unit. The optical scanning unit includes scanning lenses that guide the beams to a surface to be scanned. A surface on the deflector side... | 07/08/2008 |
| 7387389 | Image display system and method An image display device includes an image processing unit, a light source assembly, an optical modulator assembly, and a projection lens assembly. The image processing unit is configured to receive a video signal and generate image data and control signals. The ligh... | 06/17/2008 |
| 7385745 | Two-dimensional scanning apparatus and scanning type image displaying apparatus using the same The invention is to provide an optical scanning apparatus which scans light from a light source onto a surface to be scanned, comprising a light scanning optical system having at least one reflecting surface of non-rotation symmetrical shape, and guiding a deflected... | 06/10/2008 |
| 7375869 | Tandem type scanning optical system A scanning optical system is provided with a light source configured to emit a plurality of beams, a deflecting device configured to deflect the plurality of beams simultaneously to scan in a main scanning direction, and an imaging optical system configured to conve... | 05/20/2008 |
| 7362484 | Optical scanner package with optical noise reduction The optical scanner package having: an optical scanner device scanning an incident beam and including a scanning mirror and a comb-electrode structure operating the scanning mirror; a package container containing the optical scanner device; and a package window that... | 04/22/2008 |
| 7362486 | Optical scanning device with at least one resin lens for controlling a beam waist position shift A first optical system guides a light beam from a light source to an optical deflector, and a second optical system converges the light beam deflected by the optical deflector on a surface to be scanned. The first optical system includes at least one resin lens havi... | 04/22/2008 |
| 7345801 | Laser scanning device Laser light, emitted from a laser light source, is formed into a converged light ray by a condensing lens, and deflected by a resonance mirror. The laser light is converged on a photosensitive member through a scanning lens including one negative lens, and has at le... | 03/18/2008 |
| RE40109 | Multi-beam optical scanner A multi-beam optical scanner, in which a lateral magnification β in a composite system of an optical system between the light source for a multi-beam and the scanned surface satisfies the condition: 2 | 02/26/2008 |
| 7315409 | Optical scanning device and image forming apparatus using the same An optical scanning device deflects, by a common optical deflecting part, a plurality of groups of light beams emitted from a plurality of light sources and directs, by a scanning and imaging optical system, the groups of deflected light beams to respective scan sur... | 01/01/2008 |
| 7298537 | Optical scanner and image forming apparatus An optical scanner includes a light source, an optical coupler, an optical line image unit, a deflector, and an optical scanning unit. The optical scanning unit includes scanning lenses that guide the beams to a surface to be scanned. A surface on the deflector side... | 11/20/2007 |
| 7295722 | Scanning device, laser projector, and optical device A scanning device, a laser projector and an optical device that are capable of accomplishing a wide scanning area in a simple manner include a galvanomirror that is a scanning part scans a laser light in a two-dimensional direction. The laser light from the galvanom... | 11/13/2007 |
| 7289136 | Laser scanning unit and tandem image forming apparatus having the same A laser scanning unit includes a light source for emitting a plurality of laser beams, a rotating polygon mirror for deflecting the plurality of laser beams in a predetermined direction, an fθ lens for transmitting the deflected laser beams to be scanned onto the s... | 10/30/2007 |
| 7289272 | Optical system including an anamorphic lens An optical system includes a primary lens group having a central beam path therethrough and including a front lens group and a rear lens group. An anamorphic lens group lies on the central beam path and is positioned between the front lens group and the rear lens gr... | 10/30/2007 |
| 7286274 | Optical scanner and image forming apparatus using the same The invention aims at provision of an optical scanner in which an optics required for equalizing an optical magnification in a scanning range is produced with high accuracy, so that intervals among a plurality of scanning lines on a to-be-scanned surface are even in... | 10/23/2007 |
| 7283287 | Light scanning unit, and image forming apparatus using the same The invention is to provide a light scanning unit designed to suppress the quantity of torsion of a light beam caused by an inclination angle of a cylindrical lens disposed between a light source and an optical deflecting element so as to suppress increase in diamet... | 10/16/2007 |
| 7271823 | Optical scanner and image forming apparatus An optical scanner has a deflector, a coupling lens, a cylindrical lens, a plate through which light to and from the deflector pass, and an optical system which condenses the light deflected on a surface to be scanned. Bundles of light beams incident on the deflecto... | 09/18/2007 |
| 7265886 | Optical scanner and image forming apparatus The over-field type optical scanner includes a first imaging optical system disposed between a light source and a rotating polygon mirror for forming, on one surface of the rotating polygon mirror, a linear image with a width larger than a width along a main scannin... | 09/04/2007 |
| 7256917 | Two-dimensional scanning apparatus and scanning type image displaying apparatus using the same A two-dimensional scanning apparatus has light source means, deflecting means for deflecting a beam emitted from the light source means in a two-dimensional direction, and scanning optical means for directing the beam deflected by the deflecting means onto a surface... | 08/14/2007 |
| 7253937 | Multi-beam optical scanning device and image forming apparatus A multi-beam scanning device is disclosed that is able to realize a stable and small beam spot and realize stable scanning line intervals between plural light beams. The multi-beam optical scanning device includes a first optical system which has a first lens for co... | 08/07/2007 |
| 7248279 | Optical scanning device and image forming apparatus using the same Disclosed is an optical scanning device which includes a light source device, a deflecting system for deflecting a light beam emitted from the light source device, and a scanning optical system for scanning a surface to be scanned, with the light beam deflected by t... | 07/24/2007 |
| 7248391 | Optical scanning system and image forming apparatus using the same Disclosed is an optical scanning system and an image forming apparatus having the same, wherein, in one preferred form of the invention, the optical scanning system includes a light source device, a deflecting device for scanningly deflecting a light beam from the l... | 07/24/2007 |
| 7245311 | Image forming apparatus A photosensitive body has a photosensitive layer. An optical scanning device has a deflector deflecting a light flux emitted from a light source, and scans the surface of the photosensitive body by the thus-deflected light flux. A dot is formed at a center between a... | 07/17/2007 |
| 7236281 | Optical scanner and image forming apparatus An optical scanner includes a single deflector to optically scan a plurality of target surfaces to be scanned. The deflector has a common rotary axis for deflecting reflective surfaces and is shared by all the beams from a plurality of light sources. The optical sca... | 06/26/2007 |
| 7227563 | Image writing apparatus and color image forming apparatus The present invention provides a color image forming apparatus forming an image by using a plurality of image carriers, wherein at least one lens having identical optical characteristics and forming individual scanning optical systems which scan the individual image... | 06/05/2007 |
| 7224503 | Optical scanning apparatus and image forming apparatus using the same Disclosed is an optical scanning apparatus for repeatedly optically scanning a plurality of surfaces to be scanned, including: a plurality of light sources; an optical deflector for deflecting and reflecting a plurality of light beams emitted from the plurality of l... | 05/29/2007 |
| 7220256 | Laser system and method for treatment of biological tissues A system for and method of performing laser assisted surgery is disclosed. Laser radiation is preferably delivered to a target area of tissue using a Er:YAG laser source. The laser radiation is delivered to the target area in bursts of laser radiation comprising set... | 05/22/2007 |
| 7218434 | Optical scanning apparatus and image forming apparatus equipped with the same An optical scanning apparatus in which streaks in an image or unevenness in density of an image caused by influences of dusts, scratches and toner etc on the surface of a reflecting member are unlikely to occur and excellent images can be always obtained and an imag... | 05/15/2007 |
| 7215354 | Scanning optical system, optical scanning device and image forming apparatus A scanning optical system condensing a beam deflected by an optical deflector so as to form a beam spot on a surface to be scanned, comprises two lenses. A lens on the side of optical deflector has a negative refracting power in sub-scanning direction. A lens on the... | 05/08/2007 |
| 7215455 | Inner drum exposure apparatus The inner drum exposure apparatus records an image by scanning a recording material held on an arcuate inner peripheral surface of a support with a light beam that is emitted from a light source and modulated in accordance with image information and deflected by a t... | 05/08/2007 |
| 7193759 | Scanning optical system There is provided a scanning optical system, which is provided with a light source that emits at least one beam, a polygonal mirror, and an imaging optical system that converges the at least one beam deflected by the polygonal mirror to form at least one beam spot o... | 03/20/2007 |
