Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7515322 | Beam scanning device with light blocking member A beam scanning device includes a light source to emit a light beam, an optical deflector to deflect the light beam, and an optical system including a fθ lens to guide the defected light beam to a scan surface to form an image thereon. The beam scanning device also... | 04/07/2009 |
| 7453616 | Optical scanner configured so a principal ray of an incident beam from a light source to a deflector and a principal ray of a scanning beam from the deflector to a scanned surface travel on same side (or opposite sides) of an optical axis of an optical element(s) having transmissive surfaces both convex (or both concave) toward the deflector in sub-scanning section respectively, and image forming apparatus using the same Optical scanners are configured so a principal ray of an incident beam from a light source device to a deflector and a principal ray of a scanning beam from the deflector to a scanned surface travel on the same side (or opposite sides) of an optical axis of an optic... | 11/18/2008 |
| 7446918 | Light scanning device A rotational multifaceted mirror (24) deflects a laser light outgoing from a semiconductor laser (21), so that the light scanning device (2) which scans the photoconductive drum (131) has a third optical system (25) having a correc... | 11/04/2008 |
| 7443559 | Optical scanning unit An optical scanning unit including: a light source which produces and emits a beam; a beam deflector which deflects and scans the beam in a main scanning direction of an exposed object; and an f-θ lens which corrects the beam deflected by the beam deflector at diff... | 10/28/2008 |
| 7408689 | Light scanning unit and image forming apparatus employing the same A light scanning unit includes a light source which emits light beam with a predetermined wavelength, a beam deflector which deflects and scans the light beam emitted by the light source toward a photosensitive body, and an f-θ lens which has at least one plastic l... | 08/05/2008 |
| 7397592 | Beam irradiation apparatus, beam irradiation method, and method for manufacturing a thin film transistor A galvanometer mirror rotates in one direction when the galvanometer mirror is used. A spot can be scanned on an irradiated surface at a more constant speed by rotating the galvanometer mirror and by using the inertia. Moreover, it is preferable to make the galvanom... | 07/08/2008 |
| 7388698 | Laser scanning unit with meniscus scan lens having asymmetric, negative curvature in the sub-scanning direction and absolute curvature values in the main-scanning direction that are maximal at the center and differing minimal values at each side A scanning optical lens used for a laser scanning unit for imaging a laser, which is deflected by a beam deflection unit, on a photosensitive body. The scanning optical lens has a curvature of a Meniscus shape at a sub-scanning direction section, wherein the Meniscu... | 06/17/2008 |
| 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 |
| 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 |
| 7339699 | Image processing apparatus An image processing apparatus includes a first sensor having a plurality of reading elements arranged in the primary scanning direction, a second sensor disposed in parallel with the first sensor and by a predetermined lines in the secondary scanning direction, an i... | 03/04/2008 |
| 7333121 | System and method for scaling data to compensate for slanted scanning in a bidirectional scanning laser printer A scanning system is adapted to scan an image beam across a photoconductive surface. The scanning system includes an oscillating mirror and is operable to generate an image beam and to reflect the image beam off the oscillating mirror to bidirectionally scan the ima... | 02/19/2008 |
| 7304778 | Optical scanning system and image forming apparatus using the same An optical scanning system and an image forming apparatus with such optical scanning system, include a light source, an optical deflector having a deflecting surface, for scanningly deflecting a light beam emitted from the light source means, and an imaging optical ... | 12/04/2007 |
| 7292393 | Variable illuminator and speckle buster apparatus Disclosed is an apparatus for illuminating a sample. In one embodiment, this apparatus includes a laser for outputting an incident laser beam towards a sample and a first diffractive element having a plurality of diffraction pattern portions. The first diffractive e... | 11/06/2007 |
| 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 writing light flux is related with a position at which ghost light app... | 09/25/2007 |
| 7274461 | Optical lens system and position measurement system using the same An optical lens system includes a lens surface capable of forming concentric interference patterns on an object as if light emitted from a single light source were virtually emitted from two or more light sources within a plane containing an optical axis of the sing... | 09/25/2007 |
| 7274498 | Post-objective scanning device A post-objective scanning device using a rotatable polygon mirror has a correction system for achieving telecentric scanning with a well-corrected scanning spot. A mirror facet tracker is provided to obtain high radiation efficiency and optimum use of the correction... | 09/25/2007 |
| 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 second pre-scan assembly generating a second light beam and directing... | 09/18/2007 |
| 7268929 | Optical scanner reflecting and outputting light increased in width and image forming apparatus using same An optical scanner is disclosed which includes: a reflective surface from which incoming light is reflected; and a scanning sub-system altering an angle of the reflective surface, relative to an entry direction in which the incoming light enters the reflective surfa... | 09/11/2007 |
| 7268948 | Optical element and optical scanning device using the same To obtain an optical element capable of obtaining uniform anti reflection characteristics over the whole optical surface having a finite curvature of the optical element, a plurality of convex optical pieces having an anti reflection function are provided on a surfa... | 09/11/2007 |
| 7265774 | Collimating lens of beam scanning apparatus A beam scanning apparatus having a collimating lens in which a beam emitted from a light source is transformed into at least one of a convergent beam and a parallel beam with respect to an optical axis and outputted towards a slit. The collimating lens being one she... | 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 |
| 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 scan focused light onto a scan line, and includes a multi-beam light sou... | 08/07/2007 |
| 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 |
| 7253938 | Laser scanning apparatus A light scanning apparatus is provided. The light scanning apparatus includes a beam splitter, which is located between a polygonal mirror and an fθ lens and reflects a portion of light incident thereon to the polygonal mirror. A laser beam reflected from the beam ... | 08/07/2007 |
| 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 |
| 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 |
| 7245411 | Collimating lens with temperature compensation and an optical scanning apparatus using the same A temperature-compensated collimating lens provided of a single piece of lens, which does not have variation in its focal distance due to temperature changes, and an optical scanning apparatus using the same. The collimating lens to transform a ray of light from a l... | 07/17/2007 |
| 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 |
| 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 |
| 7227510 | Method and apparatus for seamless integration of images using a transmissive/reflective mirror An integrated display system includes multiple displays and a transmissive/reflective mirror with a mirror face. Images from display areas of one or more displays are passed through the mirror face and provided to a viewer. Images from display areas of one or more d... | 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 |
| 7218433 | Scanning apparatus using a plurality of diffracted beams The present invention provides a scanning apparatus, which scans a plurality of diffracted beams, obtained by diffracting and modulating light emitted from a single light source, on a scanning object, such as the drum of a printer or sheet. ... | 05/15/2007 |
| 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 |
| 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 |
| 7214946 | Speckle reduction method and apparatus An apparatus adapted for confocal imaging of a non-flat specimen comprising a coherent light source for producing a light beam, imaging optics adapted to focus the light beam into at least one spot on a surface of a specimen, and a detector adapted to receive and de... | 05/08/2007 |
| 7202985 | Inner drum exposure apparatus An exposure process is executed by multi-beams divided by polarizing and combining laser beams (La, Lb) modulated based on an image signal so as to be emitted by a light source side optical system by using a polarized light beam splitter, and by converting the laser... | 04/10/2007 |
| 7202986 | Light scanning unit A light scanning unit for adjusting image magnification and beam diameter and having a simple structure and a low-priced multi-beam shape is provided. The light scanning unit includes a composite light source in which a plurality of light sources for emitting cohere... | 04/10/2007 |
| 7196831 | Two-dimensional optical scan system using a counter-rotating disk scanner A counter-rotating disk scanner together with another scan mechanism provides two-dimensional optical scanning. The counter-rotating disk scanner includes counter-rotating scan disks that implement the scanning action as they rotate through an optical axis of the sy... | 03/27/2007 |
| 7193729 | Instrument cluster with laser beam illumination An automotive instrument cluster containing a grouping of display fields representing measured automotive operating quantities such as speed, temperature and pressure. Illumination markers which are analogs of pointers are created within the display fields from a si... | 03/20/2007 |
| 7190498 | Optical scanning apparatus and image forming apparatus using the same A scanning optical system using a short-wavelength light of 500 nm or less uses a reflecting mirror having a higher absolute reflectivity and having reduced wavelength and angle dependences. Divergent ray of light emitted from a semiconductor laser is converted into... | 03/13/2007 |
