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7450287 Optical scanning device and method for detecting synchronization signal  
Provided are an optical scanning device and a method for detecting a synchronization signal. In the optical scanning device, a beam incident on a scanning area of an object's surface to be scanned...
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...
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...
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...
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...
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...
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;...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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,...
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...
7352499 Arrangement for and method of projecting an image with pixel mapping  
A laser beam is swept by a scan mirror as a pattern of scan lines on a projection surface. The scan mirror moves at a variable speed along each scan line. Each scan line has a number of pixels. The...
7351950 Optical beam scanning device and image forming apparatus  
An optical beam scanning device including a plurality of optical elements that are arranged on a housing and give a plurality of scanning lines to a plurality of photoconductor drums with an...
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...
RE40101 Electro-optical scanner having selectable scan pattern  
A wavelength selector in an optical scanner is operative for selecting a first laser beam having a predetermined wavelength to produce a first scan pattern, and for selecting a second laser beam...
7336406 Scanning optical device and color image forming apparatus using the same  
At least one exemplary embodiment is directed to a scanning optical device includes an incidence optical system that causes the principal rays of all of a plurality of light fluxes emitted from a...
7330294 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...
7317179 Systems and methods to shape laser light as a homogeneous line beam for interaction with a film deposited on a substrate  
Systems and methods are disclosed for shaping and homogenizing a laser beam for interaction with a film. The shaping and homogenizing system may include a lens array and a lens that is positioned...
7310174 Method and apparatus for scanning regions  
A beam scanner is operable to scan light in two or more axes, typically in a raster pattern that includes a fast scan axis and a slow scan axis. Plural beams of light are scanned, each beam of...
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...
7297936 Optical beam scanning device and image forming apparatus  
It is an object of the present invention to provide an optical beam scanning device and an image forming apparatus which suppress displacement of plural images formed by a different photoconductor...
7295359 Light beam scanner and image forming apparatus  
A light beam scanner irradiates surfaces of respective of different image carriers with respective of plural light beams having been subjected to constant angular velocity deflection by a...
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...
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...
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...
7274499 Scanning optical apparatus and image forming apparatus using the same  
An object of the present invention is to prevent deterioration of image quality caused by ghost light generated from components of a scanning optical apparatus. In the present invention, an image...
7271942 Multi-beam optical scanning apparatus and image forming apparatus using the same  
Provided is a multi-beam optical scanning apparatus, which is capable of reducing an inter-light-beams illuminance difference at the same image height on a surface to be scanned and forming a...
7271941 Laser scanning unit including a shield  
A laser scanning unit is provided comprising: a housing; a scanning device; a first pre-scan assembly generating a first light beam and directing the first light beam toward the scanning device; a...
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,...
7265885 Multi-beam emitting device and light scanning unit employing the same  
A multi-beam emitting device which emits a multi-beam having a substantially equal wavelength and including a substrate and a plurality of laser beam emitting portions formed on the substrate, each...
7262765 Apparatuses and methods for utilizing non-ideal light sources  
A method includes obtaining a measurement of a property of a light source, scanning light from the light source onto a surface, such that the light interacts with the surface, detecting light from...
7256916 Optical scanning imaging system  
The system includes an illumination system, a scanner, a non-linear optical element, and a pumping light source. The illumination system emits imaging beam and the scanner scans the beam incident...
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...
7253936 Laser scanning unit  
A laser scanning unit is provided which can use an inexpensive and easily manufactured fθ lens and which can further ensure good precision in adjustment. The laser scanning unit can repeatedly...
7253935 Optical scanner, image forming apparatus, and optical scanner attitude correcting method  
An optical scanner includes a light source that emits a light beam, a deflection unit that deflects the light beam, an optical unit that introduces the light beam to a target surface, a housing...
7245410 Optical scanning device and image forming apparatus  
An even number of reflection mirrors reflecting a light beam in the sub-scanning direction are disposed on an optical path from a deflecting reflection surface of an optical deflector to a...
7245409 Scanner apparatus and image forming apparatus  
A polygon mirror is placed so that its rotation axis is positioned on a center line in a main scanning direction of an image forming area scanned by each light beam. Moreover, two light beam...
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...
7236280 Multi-beam scanning device and image forming apparatus using the scanning device  
A multi-beam scanning device including a multi-beam light source including plural laser diode arrays emitting plural laser beams and at least one coupling lens; a deflector configured to deflect...
7233425 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...
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