Matches 451 - 500 out of 933 < 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 >
Match Document Document Title
5886805 Optical scanning device and a synchronizing signal detecting method thereof  
An optical scanning device and synchronizing signal detecting method, in which beams before or after an effective scanning width are identically reflected in an opposite direction of a scanning...
5877886 Optical beam scanning method and apparatus, and image forming method and apparatus  
In view of realizing higher resolution in the sub-scanning direction and achieving high precision and high quality image formation without generating ununiform distribution of exposure, a scanning...
5877885 Scanning apparatus having a cascade scanning optical system  
A scanning apparatus. The scanning apparatus has a cascade scanning optical system in which a scanning line, made by a scanning laser beam emitted by a first laser scanning optical system of a...
5877883 Optical scanner  
An optical scanner that has a simple construction and which yet exhibits satisfactory imaging performance under varying temperature conditions. Of the two orthogonal scanning cross sections of...
5875051 Optical scanning device and a scanning lens therefor  
An optical scanning device includes a single scanning lens. At least one of opposite surfaces of the lens has a nonarcuate shape, as seen in a polarization plane. At least one of the opposite...
5870220 Portable 3-D scanning system and method for rapid shape digitizing and adaptive mesh generation  
A portable 3D scanning system collects 2D-profile data of objects using a combination of a laser-stripe positioning device and a video camera which detects the images of the laser stripe reflected...
5867299 Cascade scanning optical system  
A cascade scanning optical system which includes a plurality of laser scanning optical systems each emitting a laser beam to scan a surface of a member, and a beam splitter positioned in an optical...
5867298 Dual format pre-objective scanner  
A dual format pre-objective scanner (10), for use in a laser printer, having an incident beam (22) from input optics (12) incident on a polygon tower (14) comprised of a first polygon (20) having a...
5861978 Scanning optical system using parallel plate to eliminate ghost images  
A scanning optical system includes a polygonal mirror, enclosed in a housing, which deflects light. The housing is provided with a transparent plane-parallel plate, parallel to a reflecting surface...
5861977 Dual format dual resolution scanner with off-axis beams  
A laser scanner (10) has a light source (12), which produces a light beam (32) which is incident on a polygon tower (14) comprised of a first polygon (30) having a first diameter and first number...
5861964 Method of manufacturing light beam scanning apparatus and fixed hologram plate and rotatable hologram and light distributing apparatus  
A high-resolution light-beam scanning apparatus utilizing only mass-producible holograms instead of utilizing auxiliary optical systems, and capable of compensating for disadvantages. The...
5859720 Scanniing optical apparatus  
A scanning optical apparatus includes a light source, a deflector for deflecting a beam emitted from the light source, an optical device for guiding the beam emitted from the light source to the...
5854705 Micropositioned laser source for raster output scanners  
In a raster output scanner (ROS) of a xerographic printing device, the location of an apparent source of the light beam is adjusted within a light emitting apparatus to enable spot position control...
5850306 Optical scanner  
An optical scanner includes an optical deflector having a plurality of reflecting surfaces to deflect laser beams emitted from light sources, an f θ lens to through which the laser beams pass for...
5844707 Scanning optical device  
A scanning optical device that includes a laser source that emits a laser beam; a deflector for deflecting a laser beam to form a scanning beam spot on an image surface; a beam splitter, between...
5838480 Optical scanning system with diffractive optics  
An improved optical system having diffractive optic elements is provided for scanning a beam. This optical system includes a laser source for emitting a laser beam along a first path. A deflector,...
5838479 Optical exposure unit and image forming unit used in optical exposure unit  
A laser exposure unit of this invention includes a finite focal lens for providing a predetermined characteristic to beams sent from a plurality of light sources, a cylinder lens, a mirror block...
5838001 Scanning optical device and polygon mirror cover  
A scanning optical device that includes a light source for emitting a light flux; a polygon mirror including a plurality of reflecting surfaces for deflecting the light flux to form a scanning beam...
5835253 Raster output scanning system with a super-elliptic laser beam source  
The optical path length of a raster output scanning (ROS) system is minimized by the use of a laser beam source for emitting a light beam with an enlarged divergence ratio. A super-elliptic light...
5835252 Device for generating annular pictures  
A device for generating a partial annular or an annular picture on a portion of a spherical projection surface by an annular mirror by which a light bundle generating this picture can be deflected...
5831758 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...
5828483 Printing and inspection system using rotating polygon and optical fibers  
A system for scanning or tracking, which includes a polygon rotatable about a rotational axis. The system further includes a fixed radiation source directing radiation at the polygon along a path...
5828479 Cascade scanning optical system  
A cascade scanning optical system which includes: a pair of laser scanning optical systems each having a laser beam emitter and a laser beam deflector, wherein a laser beam emitted by the laser...
5825522 Cascade scanning optical system  
A cascade scanning optical system which includes a first laser scanning optical system for emitting a first laser beam to scan a surface of a member to generate a first scanning line, and a second...
5822105 Scanner  
A scanner is here disclosed in which the structure of an fθ lens can be simplified to decrease the cost of the scanner and facilitate the installation operation. In order to maintain the fθ...
5821647 Spindle motor  
A spindle motor comprises a rotational member supported by bearings for rotation about a rotational axis, a rotational body and a motor rotor mounted on the rotational member for rotation...
5818622 Optical scanning apparatus  
A damping member is disposed between a motor cover attached near a rotary polygon mirror drive motor so as to cover a rotary polygon mirror and an optical cover attached to an optical box so as to...
5815301 Scanning optical apparatus  
A scanning optical apparatus for a printer and a digital copying machine has a light source, a deflector, first and second imaging units. The deflector deflects a light beam emitted from the light...
5815300 Optical reading apparatus having optical scanner for scanning information on objects  
An optical reading apparatus includes an optical scanning unit for emitting upward a scanning light beam to be used to optically read information on an article; and a supporting mechanism for...
5812299 Scanning optical device  
A scanning optical device includes a light source, a polygon mirror having a plurality of reflecting surfaces for deflecting a light flux emitted from the light source to form a scanning beam spot...
5812298 Aspherical reflector and light beam scanning optical system using the same  
The reflecting surface of an aspherical reflector assumes, in the main scanning plane, a curve represented by Z(Y)=AY 2 +BY 4 +CY 6 +DY 8 +EY 10 where Z is the coordinate along the optical...
5808775 Laser beam scanning optical apparatus  
A laser beam scanning optical apparatus which has a laser source unit, a collimator lens, a cylindrical lens, a polygon mirror and a scanning lens with an fθ function. The collimator lens is a...
5808774 Method of correcting curvature of image surface and optical beam scanning apparatus for use with the same  
In an optical beam scanning apparatus in which an optical beam from a light source impinges upon a deflecting system and a deflected optical beam from said deflecting system scans a...
5805323 Optical scanning apparatus  
An optical scanning apparatus comprises a first image formation optical system for shaping a diameter of a light beam emitted from a light source, deflection means for deflecting an incident light...
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...
5801869 Optical scanner, image forming apparatus and image reading apparatus  
An optical scanner comprising a light source unit, an optical deflector to scan a light beam from the light source unit, a first image formation optical system disposed between the light source...
5798851 Apparatus for correcting scanning position in optical scanner  
An optical scanner including a light source which is turned ON and OFF in accordance with drawing data. A hologram deflector, made of a rotatable planar hologram disc, provided with a plurality of...
5793515 Optical scanning apparatus  
An optical scanning apparatus includes: a rotational polygonal mirror, on the side of which a plurality of reflecting surfaces are provided, the reflecting surfaces deflecting a beam of incident...
5781325 Optical scanning apparatus  
An optical scanning apparatus includes: a rotational polygonal mirror on the the side of which a plurality of reflecting surfaces are provided, the reflecting surfaces deflecting a beam of incident...
5781324 Optical scanning lens and optical scanner  
An optical scanning lens is provided with a lens configuration for focusing and correction of field curvature and scanning speed of a deflected laser beam. The lens configuration includes a...
5777774 Reflection scanning optical system  
A reflection type scanning optical device comprises a rotatable polygonal mirror arranged so that a light beam deflected from the polygonal mirror is separated from the light beam incident thereto,...
5774251 Optical scanning apparatus  
An optical scanning apparatus includes: a rotational polygonal mirror, on the side of which a plurality of reflecting surfaces are provided, the reflecting surfaces deflecting a beam of incident...
5774250 Optical condenser system for light scanning apparatus  
An optical condenser system for a light scanning apparatus includes a first lens which is a single lens formed of plastic and a second lens which is a plano-convex lens formed of glass and convex...
5774249 Optical exposer unit  
The present invention provides an image forming apparatus, which can provide a color image having no color shift with low manufacturing cost, and an optical exposer unit applied to the image...
5774248 Optical scanning apparatus  
An optical scanning apparatus can record image information in a plurality of resolutions by changing the pitch (scanning interval) of light beams in a direction orthogonal to the scanning...
5771115 Optical scanner  
An optical scanner having a light source for emitting a light beam, an optical deflector having a deflecting-reflecting face for deflecting the light beam at a constant angular speed and a scan...
5764397 Optical scanner  
An optical scanner comprises: a light source; beam shaping optics for transforming an optical beam from the light source into a convergent beam; a rotating polygonal mirror having at least a first...
5760944 Scanning optical device  
A scanning optical device that includes a light source that emits a light flux; a polygon mirror for deflecting the light flux; a scanning lens for converging the light flux deflected by the...
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...
5757534 Light scanning optical system and apparatus using the same  
In a light scanning optical system comprising a first imaging optical system, a deflector, and a second imaging optical system successively toward a surface to be scanned; the second imaging...
Matches 451 - 500 out of 933 < 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 >