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| Number | Title | Issue Date |
| 7551337 | Optical scanning apparatus and image forming apparatus A light source part has a light source unit in which the plurality of light sources respectively emitting the light beams at angles different in a sub-scanning direction with respect to an optical standard plane, parallel to a main scanning direction and passing thr... | 06/23/2009 |
| 7545547 | Scanning unit and image forming apparatus A scanning optical system leads the light fluxes deflected by the polygon mirror to a photosensitive drum. An absolute value of a lateral magnification in a main scanning direction is larger than an absolute value of a lateral magnification in a sub-scanning directi... | 06/09/2009 |
| 7538924 | Optical scanner and image forming apparatus including a light shielding device disposed between light beams that fall on the deflecting unit and light beams that are deflected from the deflecting unit An optical scanner includes more than two light sources, a rotatable deflecting unit that commonly deflects the light beams emitted by the light sources. An optical unit guides a corresponding one of deflected light beams to a corresponding surface to be scanned. Th... | 05/26/2009 |
| 7535612 | Optical scanner and image forming apparatus including same An optical scanner scans a plurality of objects respectively with optical beams and includes a deflector assembly including at least one deflecting unit that deflects the optical beams in a main scanning direction and a plurality of reflection optical systems each i... | 05/19/2009 |
| 7525709 | Scanning optical system An object of the present invention is to provide a scanning optical system capable of reducing the number of its components and its size with a simple construction, and an image forming apparatus using the scanning optical system. In a specific scanning optical syst... | 04/28/2009 |
| 7518771 | Optical scanning device and image forming apparatus equipped with the same An optical scanning device is configured in such a manner that, of four light beams for colors corresponding to black, cyan, magenta, and yellow, the angle of the reflection surface of the last folding mirror disposed in the optical path of a light beam correspondin... | 04/14/2009 |
| 7511868 | Multi-beam luminous source apparatus, an optical scanning apparatus, and an image formation apparatus A multi-beam luminous source apparatus, an optical scanning apparatus, and an image formation apparatus are provided. The multi-beam luminous source includes a first member for supporting a coupling lens and a second member for supporting a control substrate that su... | 03/31/2009 |
| 7508563 | Optical scanning device and image forming apparatus using the same An optical scanning device includes plural light source devices, a deflecting device having deflecting surfaces, an input optical system and a plurality of imaging optical systems, wherein a plurality of scan surfaces are simultaneously scanned by the deflecting dev... | 03/24/2009 |
| 7508562 | Multi-beam scanning optical system A multi-beam scanning optical system configured to scan a plurality of laser beams on a scanned surface in a predetermined scanning direction includes a light source emitting a plurality of laser beams from respective laser emitters spaced from each other in the pre... | 03/24/2009 |
| 7495813 | Optical scanning device and image forming apparatus A vibration mirror used in an optical scanning device has two reflection surfaces on opposite sides. A pair of light beams corresponding to a pair of different colors are irradiated on one reflection surface and another pair of light beams corresponding to another p... | 02/24/2009 |
| 7483193 | Light scanning device and image forming device A light scanning device includes: a housing; a light deflector provided at the housing, and rotating deflecting surfaces thereof around a rotating shaft, and deflecting light beams; plural light sources provided at the housing, and emitting the light beams in a dire... | 01/27/2009 |
| 7474449 | Optical multi-beam scanning device and image forming apparatus It is an object of the present invention to provide an optical multi-beam scanning device and an image forming apparatus which adopt a horizontal synchronization sensor and can suppress displacement in a horizontal scanning direction even when latent images are writ... | 01/06/2009 |
| 7457020 | Optical scanning apparatus The optical scanning apparatus has a first light source, a second light source disposed in a side-by-side relationship with the first light source in a sub-scanning direction, a deflector deflecting respectively a first light beam outgoing from the first light sourc... | 11/25/2008 |
| 7450283 | Multi-beam light source unit, optical scanning device, image formation apparatus, light beam combining unit, optical system, optical apparatus A multi-beam light source unit is disclosed that has high layout degree of freedom and low manufacturing cost. The multi-beam light source unit includes two or more light sources, two or more first optical systems that shape light beams from the light sources, and a... | 11/11/2008 |
| 7450284 | Optical scanning apparatus and image forming apparatus using the same including relationship between interval between deflector and scanned surface and a natural convergent point A compact optical scanning apparatus capable of desirably correcting an fθ characteristic, a field curvature, and other aberrations, and an image forming apparatus using the same, which includes an incident optical system (LA) for guiding a beam from a light source... | 11/11/2008 |
| 7446917 | Optical scanning apparatus An optical scanning apparatus constructed to dispose optical elements guiding light beams to a deflector such as a rotary polygon mirror at a low cost with high accuracy, includes a first light source, a second light source, a deflector, a first optical member provi... | 11/04/2008 |
| 7443556 | Optical scanning apparatus and image forming apparatus In an optical scanning apparatus, an optical element has power for predominantly correcting a position of a scanning line by scanning in a sub-scanning direction; a scanning line curvature adjusting unit adjusts a curvature of the scanning line by deforming the opti... | 10/28/2008 |
| 7433108 | Arrangement for and method of improving image quality, especially for image projection arrangements A lightweight, compact image projection module, especially for mounting in a housing having a light-transmissive window, is operative for causing selected pixels in a raster pattern to be illuminated to produce an image of high resolution of VGA quality in color. Th... | 10/07/2008 |
| 7430070 | Method and system for correcting angular drift of laser radar systems A method of calibrating angle drift of a laser radar system is provided, in one aspect of the present invention. The method includes, providing a plurality of virtual fiducials into an xy scanner; and providing a plurality of auxiliary laser sources into the xy scan... | 09/30/2008 |
| 7428089 | Optical scanning device and image forming apparatus An optical scanning device includes a light source that emits a light beam, an optical deflector at which a light beam emitted from the light source is incident, the optical deflector deflecting the incident light beam, an optical system that guides the deflected li... | 09/23/2008 |
| 7417777 | Optical scanning device and image forming apparatus A coupling lens arranged on an optical path of an optical beam from a VCSEL, which has a refraction plane and a diffraction plane that respectively change a power according to a temperature change and suppresses a beam-waist position change in a main-scanning direct... | 08/26/2008 |
| 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 |
| 7411712 | Optical scanner and image formation apparatus An optical scanner has light source units spaced from each other along a first direction and having optical axes parallel to each other. Positions from which the light beams are emitted are spaced from each other by a predetermined distance at least along a predeter... | 08/12/2008 |
| 7403316 | Optical scanning device, image forming apparatus and liquid crystal device driving method An optical scanning device includes: a light source; a deflector deflecting light beam from the light source; a coupling lens carrying out coupling of the light beam from the light source; a first optical system leading the light beam from the coupling lens to the d... | 07/22/2008 |
| 7397590 | Optical scanning apparatus and image forming apparatus employing this apparatus At least one exemplary embodiment is directed to an optical scanning apparatus that employs a short wave light source to constantly maintain a spot having a tiny diameter, even when an environmental temperature change occurs, by employing a lens and/or a diffractive... | 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 |
| 7391547 | Optical multi-beam scanning device and image forming apparatus It is an object of the present invention to provide an optical multi-beam scanning device and an image forming apparatus which adopt a horizontal synchronization sensor and can suppress displacement in a horizontal scanning direction even when latent images are writ... | 06/24/2008 |
| 7375847 | Optical scanning device and image forming apparatus using the same An optical scanning device has: a first optical system for converting a flux of light that has been emitted from a light source into another flux of light; a second optical system for focusing the flux of light that has been converted by the first optical system as ... | 05/20/2008 |
| 7375868 | Image scanning apparatus An image scanning apparatus for realizing an image on a screen includes: a spatial light modulator module for diffracting light beams having different wavelengths into relevant modes; and an iris for limiting light beams of modes except a mode of 0th-orde... | 05/20/2008 |
| 7372604 | Multi-beam scanner, multi-beam scanning method, synchronizing beam detecting method and image forming apparatus A multi-beam scanner includes light sources, a deflector deflecting the beams emitted from the light sources at an equiangular velocity, a scanning image-forming optical system guiding the deflected beams to a surface so as to be formed into light spots on the scann... | 05/13/2008 |
| 7368706 | Light scanning device A light scanning device, including a light source including plural light emitting elements arranged linearly, a deflection section that deflects plural light beams emitted from the light source to scan a surface to be scanned, a photosensor that receives at least on... | 05/06/2008 |
| 7365764 | Scanning optical apparatus and color image forming apparatus using the same A scanning optical apparatus includes a light source capable of being modulated, a deflecting element for deflecting and scanning a beam emitted from the light source, a scanning optical element for imaging the deflected beam into a spot shape on a scanned surface, ... | 04/29/2008 |
| 7365892 | Scanned light display system using array of collimating elements in conjunction with large numerical aperture light emitter array A scanned light display system includes a light emitter array having a plurality of light sources operable to emit diverging light and an array of collimating elements positioned so that each of the collimating elements receive at least a portion of the light emitte... | 04/29/2008 |
| 7358984 | Image forming apparatus including multibeam exposure unit having surface emitting laser array An image forming apparatus includes: an electrophotographic photoreceptor having a conductive substrate and a photosensitive layer provided on the conductive substrate; a charging unit for charging the electrophotographic photoreceptor; an exposure unit for exposing... | 04/15/2008 |
| 7355770 | Optical scanning unit and image forming apparatus An optical scanning unit includes a light source that emits a light beam, a light deflector that deflects the light beam from the light source, and a scanning optical system that focuses the light beam deflected by the light deflector on a scanning surface. The ligh... | 04/08/2008 |
| 7355715 | Temperature measuring apparatus, temperature measurement method, temperature measurement system, control system and control method Light from a light source is split at a first splitter into a temperature measurement beam and a reference beam, the temperature measurement beam is further split at a second splitter into first through nth measurement beams, and the reference beam is reflected at a... | 04/08/2008 |
| 7355772 | Scanner and image forming apparatus including a pre-deflection lens that has a width reduced by an emission-side concavity and that converges light incident on areas other than the thinned portion A cylindrical lens is positioned between and a polygon mirror and a second slit plate through which light beams from two light beam emitting units pass, and the cylindrical lens has a thin portion where the thickness between the entrance plane and the emission plane... | 04/08/2008 |
| 7355617 | Optical scanner and image forming apparatus An optical scanner for writing an electrostatic latent image on an image carrier includes a scanning optical system that forms an optical scanning path, a pair of optical detecting units arranged at two positions on the optical scanning path for detecting a write-st... | 04/08/2008 |
| 7355771 | Optical scanning apparatus An optical scanning device has a light shield plate where a scanning line emitted from a light source passes through a scanning lens, and is reflected by a rotation polygon mirror, and after that, passes through the scanning lens again, and is reflected by the scann... | 04/08/2008 |
| 7355657 | Laser illuminated projection displays A projection video display includes a light source including an OPS-laser delivering laser radiation in multiple transverse modes (a multiple-transverse-mode OPS-laser). The display includes a spatial light modulator for spatially modulating the radiation from the m... | 04/08/2008 |
