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"Transmission of documents via telephone wires is possible in principle, but the apparatus required is so expensive that it will never become a practical proposition."
Dennis Gabor, British physicist
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| Number | Title | Issue Date |
| 7489430 | Polygonal mirror apparatus A polygonal mirror apparatus with an improved installation structure of a polygonal mirror, which is made using a plastic material, with respect to a rotor frame. The polygonal mirror apparatus includes a base, and a bearing coupled to the base and having a first bo... | 02/10/2009 |
| 7372556 | Apparatus and methods for inspecting a composite structure for inconsistencies A system and method of inspecting material laid by a material placement machine. Light is directed onto the material in a direction essentially normal to the material to illuminate a section of the material. Laser energy is projected onto the section at an angle pre... | 05/13/2008 |
| 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 |
| 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. The first optical system can cause a light beam emitted from the lig... | 04/08/2008 |
| 7330296 | Synchronous detector, optical scanner, and image forming apparatus A synchronous detector detects timing of scanning by an optical scanner in an image forming apparatus. The optical scanner has a light source that emits a light beam, a deflecting unit that deflects the light beam, a scanning optical element that focuses the light b... | 02/12/2008 |
| 7319475 | Method and apparatus for image forming capable of preventing image quality deterioration induced by heat from an optical deflector An image forming apparatus includes an image bearing member having a photosensitive surface and an optical writing apparatus generating a laser beam modulated according to image data. The optical writing apparatus includes a housing, an optical deflector, an f-theta... | 01/15/2008 |
| 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 |
| 7236282 | Polygon mirror and optical scanning apparatus employing the same A polygon mirror structure comprising a mirror body including spherical ceramic particles, a reinforcement member for reinforcing the strength of the ceramic particles, and a polymer, and further comprising a plurality of mirror surfaces formed on a lateral surface ... | 06/26/2007 |
| 7230769 | Humidity tolerant scan lens A lens has a lens body (1), reinforcing extensions (3a, 3b) and a clear aperture (9) surrounded on top and bottom by lens body. The lens is suitable for spot scanning. The lens is made of a water absorbing material, such as ... | 06/12/2007 |
| 7185870 | Positioning mechanism for reflectors in scanner A positioning mechanism for reflectors in a scanner is capable of tool-less assembling and precise positioning. The mechanism mainly includes a carrier, some angular positioning members, and resilient arms. The carrier is a plate-like member for mounting an optical ... | 03/06/2007 |
| 7178947 | Lighting device with elliptical fresnel mirror A lighting device has a Fresnel mirror with a reflective surface for reflecting light emitted by a light source onto a target. The reflective surface is defined by an elliptical curve. The light source is disposed at approximately the first focal point of an ellipse... | 02/20/2007 |
| 7168822 | Reconfigurable linescan illumination A reconfigurable illumination system for illuminating an object, and associated method. The illumination system comprises a cylindrical diffuser having a longitudinal aperture, a linescan camera positioned for having a direct line of sight to the object through the ... | 01/30/2007 |
| 7154652 | Light scanning optical system, image projection apparatus, and image display system A light scanning optical system that is capable of increasing a deflection angle without causing optical performance degradation includes a reflection surface for reflecting incident light, a unit for rotating the reflection surface about a swing axis existing in su... | 12/26/2006 |
| 7151556 | Sub-scanning interval adjusting apparatus for multi-beam scanning unit A sub-scanning interval adjusting apparatus for a multi-beam scanning unit adjusts an interval between at least two laser lines that are formed on a photoreceptor drum without causing starting points of image formation to vary. In the multi-beam scanning unit simult... | 12/19/2006 |
| 7142340 | Optical scanner apparatuses and optical scanning methods Aspects of the disclosure relate to optical scanner apparatuses, hard imaging devices, optical scanning methods, and hard imaging scanning methods. In one aspect, an optical scanner apparatus is described. The optical scanner apparatus may include an optical scannin... | 11/28/2006 |
| 7075563 | Multi-beam laser scanning device There is provided a multi-beam laser scanning device able to efficiently suppress and prevent density fluctuation and achieve higher image quality. The multi-beam laser scanning device comprises a light emitting source generating a plurality of laser beams, a rotati... | 07/11/2006 |
| 7050207 | Optical pickup device using hologram pattern and hologram pattern generating method Astigmatism and coma are suppressed in an optical pickup device such that light from a single real laser light source is diffracted and divided by a hologram module into a plurality of light spots which are focused upon a plurality of tracks of an optical disk to re... | 05/23/2006 |
| 7038853 | Athermalized plastic lens A plastic lens includes refractive and diffractive optical apparatus configured to produce optothermal changes substantially canceling each other over a predetermined working temperature range to render the plastic lens substantially athermalized over the range.... | 05/02/2006 |
| 7019766 | Optical scanning device An optical scanning device directs a light beam emitted from a light source to a mirror of a mechanical deflector through a first optical system, deflects the light beam in a main scanning direction by causing the light beam to be reflected by a mirror surface of th... | 03/28/2006 |
| 7009746 | Polygon mirror and method of manufacturing the same, optical scanner and electrophotograph A polygon mirror that can be manufactured at low cost and high productivity and a method of manufacturing the same, a polygon mirror that can be manufactured at low cost and presents little variations in reflectance in a wide range of angles of incident, an optical ... | 03/07/2006 |
| 6958764 | Scanning optical apparatus and image forming apparatus using the same A scanning optical apparatus includes incident optical system for causing at least one light beam emitted from a light source to be incident on a deflection device and image formation optical system including at least one refractive optical element and at least one ... | 10/25/2005 |
| 6954222 | Manufacturing method of scanning optical system A laser beam emitted by a light source is incident on one of reflecting surfaces of a polygon mirror. The laser beam reflected by the reflecting surface is dynamically deflected in a main scanning direction due to the revolution of the polygon mirror and enters a sc... | 10/11/2005 |
| 6951411 | Light beam generation, and focusing and redirecting device An improved light beam generation and focusing device (15, 50) has a light source (16, 51) constructed and arranged to emit at least one beam of light (20), and a lens assembly (17, 19, 56) constructed and arranged to focus the at least o... | 10/04/2005 |
| 6937376 | Scanning optical system There is provided a scanning optical system which includes a light source, a line-like image forming optical system, a polygonal mirror, and an imaging optical system. The line-like image forming optical system forms a line-like image extending in the main scanning ... | 08/30/2005 |
| 6735003 | Method and apparatus for reducing artifacts in an imaging system A method and apparatus for reducing artifacts in an imaging system by directing a stream of air onto the beam deflection assembly of the imaging system. An air displacement system, such as a fan assembly or the like, is oriented to direct, a stream of air onto the r... | 05/11/2004 |
| 6511186 | Focus and aim device and method for image projection An image projection system includes an image generator, a screen and a focus and aim component. The focus and aim component receives modulated light from the image generator and focuses and deflects the light as a function of a position on the screen. The... | 01/28/2003 |
| 6185029 | Optical scanner and electrophotographic printer employing the same An optical scanner comprises a light source, a polygon mirror having plural light deflection faces for deflecting a light flux emitted from the light source, a first optical system for introducing the light flux emitted from the light source to the polygo... | 02/06/2001 |
| 6118568 | Polygon mirror motor and polygon mirror supporting structure A polygon mirror assembly includes a polygon mirror and a supporting stand for supporting the polygon mirror. The supporting stand and the polygon mirror are combined in a pressure joining manner. The polygon mirror supporting structure can be provided so... | 09/12/2000 |
| 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 system has an aspheric collimator lens, an aperture and a fou... | 08/15/2000 |
| 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 that deflects the laser beam emitted by the laser source tow... | 07/04/2000 |
| 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 system has an aspheric collimator lens, an aperture and a fou... | 05/02/2000 |
| 5986793 | Optical apparatus An optical apparatus has a holder which integrally holds a light source for emitting a divergent beam, and a finite focus lens (or a collimator lens) for converting the divergent beam to a convergent one (or a parallel one). The holder is made of a materi... | 11/16/1999 |
| 5962838 | Barcode scanner with manually switchable scan patterns A scanner with multiple modes of operation producing two or more distinct scan patterns, with each scan pattern optimized for different modes of operation with a manually actuated switching mechanism whereby the operator may readily select a desired scan ... | 10/05/1999 |
| 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 predetermined position of a pickup surface by rotation of a pred... | 08/31/1999 |
| 5801870 | Light exposure and illuminating apparatus A light exposure illuminating apparatus is provided which, employing harmonics of a continuously outputted laser beam, is small-sized, inexpensive and free from speckles and which achieves a high light source utilization efficiency. Specifically, a harmon... | 09/01/1998 |
| 5757535 | Optical scanner An optical scanner in which light beams from a light source are made incident in such a manner as to extend over a plurality of reflecting surfaces of a rotating polygon mirror, comprising: a light source; a first optical system which causes at least dive... | 05/26/1998 |
| 5621562 | Optical Scanning device In an optical scanning device, a redirecting flat mirror is provided that redirects a laser flux from a laser source to a polygonal mirror. In order to reduce the size of the optical scanning device in the direction in which the optical elements are gener... | 04/15/1997 |
| 5619363 | Laser optical system A laser optical system for scanning a laser beam using a rotary polygonal mirror made of plastics. In the laser optical system, a portion close to the edge on the side along the rotary direction of the mirror surface of the rotary polygonal mirror made of... | 04/08/1997 |
| 5617133 | Method and apparatus for adjusting orientation of light beams in a raster scanning system A raster scanning optical system and method emits a first light beam and a second light beam onto a light receiving member. A scanning device has at least one facet for reflecting the first and the second light beams to the light receiving member. A light... | 04/01/1997 |
| 5596444 | Optical apparatus having laser beam diameter variable according to image data Image data input from a host computer is converted into data BDATA corresponding to a beam diameter at an image control circuit. BDATA is input into a voice coil 21 driving a collimator lens through a collimator lens driving circuit 3, and the diameter of... | 01/21/1997 |
