| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 359204000 | Utilizing plural light beams | 20 |
| 20080204840 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - An optical scanning device includes a light source, a deflector, and an image-forming optical system. The deflector includes a deflecting surface for deflecting light beams in a main scanning direction. The image-forming optical system includes two relay lenses having a positive power in the main scanning direction. The relay lenses cause main light beams of light beams emitted from the light source to cross near the deflecting surface in the main scanning direction. | 08-28-2008 |
| 20080204841 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - An optical scanning device includes a deflecting unit, a first sensor, and a modulating system. The deflecting unit deflects a plurality of beams in a main scanning direction to a writing area of a surface to be scanned for scanning the writing area. The first sensor detects a beam to be incident on a point on a first side of the writing area, and outputs a signal in response to detected beam. The modulating system modulates the beams in synchronization with the signal output from the first sensor. | 08-28-2008 |
| 20080204842 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - By setting elements within the range that predetermined conditions are satisfied, for example, so that a size of a rotating polygon mirror is minimized, the rotating polygon mirror is made compact while the eclipse of light beams in the main scanning direction is prevented. The cost reduction of an apparatus is thus realized. The compact rotating polygon mirror reduces the consumption energy and the amount of heat generated in its drive system. Deteriorations in various optical characteristics including an increase in spot diameter of the light beam by temperature variation, uneven scanning pitch, and sub-scanning direction variation in beam pitch are suppressed. | 08-28-2008 |
| 20080212156 | OPTICAL SCANNING DEVICE, OPTICAL SCANNING METHOD, PROGRAM, RECORDING MEDIUM, AND IMAGE FORMING APPARATUS - An optical scanning device is configured to identify a light-emitting unit at the start of writing on the basis of a sub-scanning resist displacement and selects a combination of four light-emitting units according to the light-emitting unit at the start of writing. The optical scanning device predicts the amount of deformation of pixel according to the combination and adjusts a light volume of light emission from a light-emitting unit to be corrected using the amount of deformation. Thereby, a pixel with an excellent shape quality can be constantly formed regardless of the combination of the light-emitting units and a pixel formed of multiple dote can be accurately and stably formed. | 09-04-2008 |
| 20080218827 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - An optical scanning device includes a light source, a light-beam splitting unit, a deflector, and a scanning optical system. The light-beam splitting unit splits a light beam from the light source into a plurality of light beams, so that the light beams are each incident to any one of reflecting surfaces of the deflector while having a phase difference of approximately π/2. The scanning optical system receives the light beams from the deflector and projects each of the light beams onto a corresponding target surface. | 09-11-2008 |
| 20080225365 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS USING THE DEVICE - An optical scanning device for scanning surfaces of an even number of photoconductors simultaneously includes a rotating deflecting device arranged substantially at a center in a housing to deflect optical beams, and a plurality of scanning optical systems corresponding to the even number of photoconductors, arranged to be substantially symmetrical with the rotating deflecting device as a symmetry center. The plurality of scanning optical systems include a plurality of folding-back mirrors and at least one long lens having power in a sub-scanning direction, respectively, and the pluralities of folding-back mirrors and the at least one long lenses of the symmetrically arranged scanning optical systems are arranged to be symmetrical to each other with the rotating deflecting device as the symmetry center, respectively. | 09-18-2008 |
| 20080231929 | Frequency-Addressing Matrix Routing Head For Light Beams - The invention is about a device (FIG. | 09-25-2008 |
| 20080239433 | LIGHT SOURCE DEVICE, OPTICAL SCANNING DEVICE, AND IMAGE FORMING APPARATUS - An optical splitting member splits a light beam emitted by a light source into first light beam and second light beam. A coupling member couples the first light beam. An optical system converges the second light beam on a light receiving unit. A holding member holds the light source, the optical splitting member, the coupling member, and the optical system. A supporting member supports the holding member so that the holding member is rotatable about an optical axis of the light beam. | 10-02-2008 |
| 20080239434 | 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 predetermined scanning direction, a diverging property changing element changing a diverging property of each of the emitted laser beams, a deflector configured to be sine-functionally oscillated and to deflect each of the laser beams with the diverging property thereof as changed so as to scan each of the laser beams on the scanned surface in the predetermined scanning direction, and a scanning speed controlling element configured to control a scanning speed at which each of the laser beams deflected by the deflector is scanned on the scanned surface. The multi-beam scanning optical system is configured to satisfy a predetermined condition. | 10-02-2008 |
| 20080239435 | Light Source Module and Optical Scanning Apparatus Using the Same - The present invention provides a light source module that scans beams so as to realize various images at one time and realizes three-dimensional images, and an optical scanning apparatus using the same. The light source module includes a plurality of light emitting elements that emit modulated light so as to transmit image information, and a fixing member that fixes the light emitting elements such that fixed positions of the respective light emitting elements are different from each other or direction angles of the light emitting elements are different from each other. | 10-02-2008 |
| 20080247021 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - A coupling optical system that includes a coupling lens, a linear-image forming lens, and an aperture couples light beams emitted from a light source to form a light flux. A deflector scans the light flux in a main scanning direction to form an image as a scanning line on a surface to be scanned through first and second scanning lenses. While an image is being formed on an image plane, the image plane is moved in a direction perpendicular to the main scanning direction. The linear-image forming lens has a diffractive optical surface capable of collecting light in a sub-scanning direction. The temperature dependence dλ/dT of wavelength of the light source satisfies dλ/dT<0.15. | 10-09-2008 |
| 20080266633 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - An optical scanning device includes a light source configured to emit light beams, a deflector to deflect the light beams emitted from the light source, a first optical assembly which is positioned upon a light path of the light beams traveling from the light source to the deflector and which forms an image with the light beams emitted from the light source in a sub scanning direction in a vicinity of the deflector, and a second optical assembly to form the image upon a surface to be scanned with the light beams deflected by the deflector. A principal ray of two of the light beams incident to the first optical assembly, which are located at each respective terminus in the sub scanning direction, are set so as to advance so as either to remain mutually parallel to or converge with one another after passing through the first optical assembly. | 10-30-2008 |
| 20080297871 | 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 device, wherein each of the plurality of imaging optical systems includes at least one transmission type imaging optical element and at least one reflection optical element, wherein each of at least two light beams scanningly deflected by the different deflecting surfaces of the deflecting device passes through the at least one transmission type imaging optical element constituting the imaging optical system and is thereafter reflected by the at least one reflection optical element and, subsequently, it passes again through the transmission type imaging optical element, and wherein, after passing again through the transmission type imaging optical element, the at least two light beams scanningly deflected by the different deflection surfaces of the deflecting means intersect with each other within a sub-scan section. | 12-04-2008 |
| 20090009837 | OPTICAL STRUCTURE AND AN IMAGING SYSTEM USING THE SAME - An optical architecture comprises an optical scanning mechanism for use in imaging systems. With the optical scanning mechanism, illumination light from an illuminator can be directed to a target so as to generate an illumination field. The generated illumination field can be moved across the target so as to sequentially illuminate the image area on the target. | 01-08-2009 |
| 20090009838 | DIFFRACTION OPTICAL ELEMENT, LIGHT BEAM DETECTION DEVICE, OPTICAL SCANNER AND IMAGE FORMING APPARATUS - An optical element for diffracting a light beam includes a diffractive surface having a one-dimensional periodic structure. The periodic structure and transmissive diffraction efficiencies T′p(m) and T′s(m) of p- and s-polarized lights on the diffractive surface in relation to a diffraction order m satisfy the following conditions: | 01-08-2009 |
| 20090034041 | SPECKLE REDUCTION IN SCANNING DISPLAY SYSTEMS - Speckle effect in scanning display systems that employs polarized phase-coherent light is reduced by depolarizing the phase-coherent light using a depolarizer and scanning the depolarized light for producing desired images. | 02-05-2009 |
| 20090073527 | System and Method for Generating Multicolor Scan Lines and Multicolor Projection Video Display Incorporating the Same - A system for, and method of, generating multicolor scan lines and a multicolor projection video display (PVD) incorporating the system or the method. In one embodiment, the system includes: (1) light sources that emit light of different colors at different emission locations and (2) first and second lenses having lenticular arrays associated therewith and configured to receive the light of the different colors and generate multicolor scan lines therefrom, the emission locations separated by different distances from the first lens. | 03-19-2009 |
| 20090073528 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - In an optical scanning device of opposite scanning type, two target surfaces for scanning are scanned in opposite main scanning directions by using a single optical deflector. End portions of a scanning lens arranged in a scanning optical system are configured not to have refractive power in the main scanning direction. A synchronization light beam passes through the end portions of the scanning lens and falls on a light receiving element via a synchronizing optical system. The synchronizing optical system includes a first synchronizing lens, a synchronizing fold mirror, and a second synchronizing lens. The synchronizing fold mirror and the light receiving element are arranged to be in a conjugate relation with the second synchronizing lens. | 03-19-2009 |
| 20090073529 | MULTIBEAM OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - A multibeam optical scanning device includes a plurality of light sources; a collimating lens; an aperture; a cylinder lens; a light deflecting unit; a scanning optical system; and a phase adjusting element. The phase adjusting element performs phase adjustments of wavefronts of the light beams to expand a depth allowance without substantially increasing a beam spot size of each of the beam spots on the scanning surface. | 03-19-2009 |
| 20090073530 | Optical Scanning Device and Image Forming Apparatus - An optical scanning device is configured to cause a light beam to scan a photosensitive drum to form a latent image on the photosensitive drum. The optical scanning device includes light emitting units configured to emit light beams and a light deflecting unit having deflecting surfaces and being configured to cause the light beams emitted from the light emitting units to reflect at the deflecting surfaces and deflect and scan in a main scanning direction. Also, the device includes a lens disposed between the light emitting units and the light deflecting unit, the lens being configured to cause the light beams emitted from the light emitting units to be directed along the main scanning direction to the reflective surfaces, and an aperture member disposed between the lens and the light deflecting unit, and having apertures formed in line in a sub scanning direction perpendicular to the main scanning direction. | 03-19-2009 |
