Matches 651 - 700 out of 933 < 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 >
Match Document Document Title
5400133 Alignment method and apparatus for optical imaging systems  
An alignment mechanism is provided for adjusting the optical center line of scanning beams generated in a ROS system. The collimator lenses which collimates the output of a diode laser source are...
5392149 Polygonal mirror optical scanning system  
An optical system for scanning a light beam across an object where the light beam is double reflected by the reflection surfaces of a rotating polygonal mirror. Beam expander optics are included in...
5383047 Ros bow compensation  
A raster scanner is disclosed which utilizes a rotatable glass plate for compensating for scan line bow. The rotatable glass plate provides an adjustment mechanism which can shift a collimated...
5381259 Raster output scanner (ROS) using an overfilled polygon design with minimized optical path length  
In an overfilled ROS polygon system, the total optical path length is minimized by focusing modulated laser beams onto the polygon facets in the cross scan direction by placing a single cylindrical...
5377036 Suppression of stray light reflections in a raster output scanner (ROS) using an overfilled polygon design  
In an overfilled ROS polygon architecture, stray reflection from facets adjacent the completely filled (illuminated) facet are neutralized by placing an optical isolator in the path of the unwanted...
5373391 Polygon mirror with embedded yoke  
A polygon mirror is made up of a rotor including a ceramic ring, a yoke and a mirror surface formation member. The yoke and the mirror surface formation member are secured to an outer periphery of...
5367400 Optimal filling of a polygon facet by beam reprofiling  
A raster scanner system is disclosed which utilizes a pair of binary diffraction optic lenses to correct non-uniformity of the flux of a light beam received by a facet of a rotating polygon. Since...
5365288 Image mover  
An image mover having a reduced sizing for the steering mirror and rotator assembly and associated components and motors is disclosed. The image mover comprises a relay lens to collimate and relay...
5365049 Focusing means for a symbol code reader  
Focusing system for a bar code reader, comprising a lens system, wherein for varying the focal length the focusing system is provided with a reflector rotatable around a rotational axis, the...
5343326 Compact ros imaging system  
The pre-polygon scanning path length of a raster output scanning system is reduced by replacing a required cylinder lens, or lenses, with two cylindrical mirrors. One mirror with a negative,...
5343029 Optical scanner having laser diode as light source  
An optical scanner includes a light source including a laser diode for emitting a laser beam, and an optical deflector such as a rotary polygonal mirror for deflecting the laser beam to thereby...
5339188 Step stare scanning apparatus and method  
A step stare scanning device includes a mirror with a plurality of facets mounted to a mechanism which substantially simultaneously rotates the mirror about a first axis while orbiting the mirror...
5327280 Scanning optical system  
A scanning optical system according to the present invention comprises a laser light source, a scanning deflector for deflecting a laser beam from said laser light source, a scanning lens for...
5315428 Optical scanning system comprising optical chopper  
Optical scanning system to scan a code on an object comprising a laser source (1), a laser beam shaper (2) receiving a laser beam from the laser source and focussing the laser beam on the object, a...
5315427 Pair of binary diffraction optics for use in overfilled raster output scanning systems  
An optical system is disclosed which utilizes a pair of binary diffraction optic lenses to reprofile the intensity of a light beam. Both binary diffraction optic lenses have a plurality of...
5311348 Cylindrical lens system for use in laser beam scanning apparatus and scanning apparatus including same  
A cylindrical lens system is provided with a first element including a first cylindrical lens having a convex surface and a second cylindrical lens having a concave surface. The convex surface and...
5309270 Optical scanning system  
An optical scanning system for use in a laser printer, including a first light receiving section for controlling a scan timing and a second light receiving section for controlling the amount of...
5299051 Housing structure for optical scanning system  
A housing structure for an optical scanning system unit of an imaging device. Various optical elements which relate to a scanning operation effected by a light beam are disposed thereon with a...
5298729 Multiple depth of field optical scanner  
A multiple depth of field optical scanner employing a mirrored spinner which is rotated about a predetermined point between the geometric center and the periphery of the spinner. The rotation point...
5296959 Polygonal mirror, and manufacturing process and mold thereof  
A resin polygonal mirror having reflective facets each of which is made by injecting resin from a plurality of pin point gates or a single film gate. A core of the polygonal mirror is made of a...
5296958 Multiple wavelength laser beam scanning system  
Laser beam scanning system combines multiple light beams, each of differing wavelengths, to achieve a multiple wavelength scan exposure of a medium, or to increase throughput by writing plural...
5286961 Bar code reader producing two groups of vertical scan lines and two groups of inclined scan lines on a plane normal to the read window  
In a bar code reading apparatus, a laser beam emitted from a laser beam source disposed in a casing is reflected by a rotational mirror to scan a bar code. The reflected laser beam is reflected by...
5285308 Spatial light modulators for incoherent/coherent multiplexed holographic recording and readout  
The present invention relates to a novel spatial light modulator comprising a plurality of individual pixels that each contain separate detectors, electronic circuitry, and optical modulators. A...
5278691 Symmetrical overfilled polygon laser scanner  
A laser scanning device has an optical axis, a laser source for producing a beam of light, and a rotating polygon mirror having a plurality of facets. The beam of light is directed to the rotating...
5276544 Two element optical system for focus error correction in laser scanning systems  
A raster scanning system is disclosed which utilizes a focus error correction system for correcting a focus error both in the fast-scan plane and in the cross-scan plane without affecting the scan...
5270851 Achromatic-type laser scanning optical system  
An achromatic-type scanning optical arrangement includes a laser source, a first optical system for converging a beam of light emanating from the laser source, a deflecting device for deflecting...
5270850 Laser scanner  
A laser scanner which includes a rotary polyhedral mirror for scanning a light beam from a laser light source, and an Fθ lens system which includes first and second lenses through which the light...
5270849 Prevention of stray light reflections in a raster output scanner (ROS) using an overfilled polygon design  
In an overfilled ROS polygon architecture, stray reflection from facets adjacent the completely filled (illuminated) facet are prevented from affecting the scan line images by aligning the optical...
5267075 Optical unit for use in laser beam printer apparatus  
An optical unit includes a primary lens for converging a laser beam L emitted from a semiconductor laser element, a cylindrical lens for further converging the converged laser beam, and first and...
5262887 Raster output scanner architecture employing rotating prism facet tracking  
A raster scanning system is disclosed which utilizes a rotating prism for facet tracking. The rotating prism has a plurality of facets and each facet is parallel to an opposite facet. A light beam...
5257125 Afocal optical system for focus error correction in laser scanning systems  
A raster scanning system is disclosed which utilizes a focus error correction system and a pre-polygon cross-scan cylindrical lens for correcting focus error both in the fast-scan plane and in the...
5255113 Pos-objective type optical scanner  
A post objective type optical scanner for having a light source for emitting a light beam having a first width in the scanning direction and a second width in the sub-scanning direction, a single...
5255112 Optical scanning apparatus and system  
A small and inexpensive optical scanning apparatus is attained by an optical block 1 disposed between a rotating mirror 2 and a photosensitive body 3 and having specular surfaces formed at part of...
5251055 Optical scanning apparatus  
An optical scanning apparatus for effecting the scanning with plural light beams, without aberrations among the obtained scanning lines and without curvature in the scanning lines. For this purpose...
5247386 Laser scanning system  
In a laser scanning system for an electrophotographic imaging apparatus, a laser beam, emitted from a laser source, is deflected to repeatedly scan a predetermined angle zone. Before the scanning...
5245462 Laser beam scanning apparatus  
A laser beam scanning apparatus having a laser beam generating section generating first and second laser beams, a rotatable polygonal mirror for deflecting the first and second laser beams to form...
5233457 Beam scanning optical system  
A beam scanning optical system having a semiconductor laser for emitting a light beam; a cylindrical lens for converging the laser beam into a straight line; a polygon mirror for deflecting the...
5227811 Baseplate for an optical scanning device  
An optical scanning device for scanning the surface of a photosensitive member with an optical beam emitted from a light source. The optical scanning device has a casing for accommodating a...
5220450 Scanning optical system capable of automatic focusing  
A scanning optical system capable of automatic focusing includes a gas laser 10 for emitting writing beam, a polygonal mirror 20 for deflecting and reflecting the rays of light from the gas laser...
5212581 Microfilm scanning apparatus  
A microfilm scanning apparatus of the entrance scanner type has a microfilm, normally mounted in an aperture card which is mounted on a curved surface of a plano-convex cylindrical lens platten....
5210634 Light beam scanner  
A light beam emitted from a light source such as a semiconductor laser, is irradiated onto a recording section such as a photosensitive drum, through a scanning section composed of a rotary...
5208694 Optical scanner  
In an optical scanner, an image-forming optical system approximately sets the position of a deflecting/reflecting face of a rotary polygon mirror and the position of a scanned face in a conjugate...
5206754 Moisture condensation prevention structure for laser scanning optical system  
In a laser scanning system employed in an electrophotographic image forming apparatus there are provided a polygon mirror moveably driven in order to enable a laser beam to repeatedly scan a...
5204769 Postobjective optical deflector  
A postobjective optical deflector comprising: a polygonal optical deflector (polygonal rotating mirror) having a plurality of convex reflecting surfaces each being curved surface other than a...
5202784 Optical system for data reading applications  
An optical system and method for data reading including a light source which generates an optical beam directed toward an object, a pivoting scan mirror which directs the optical beam over a...
5200850 Anamorphic optical system  
An anamorphic optical system is provided with an imaging lens group comprising one or more plastic lenses and a single plastic correcting lens disposed on the image plane said of the imaging lens....
5200849 Light beam scanning system  
A light beam scanning system for scanning an object with a light beam emitted from a light source to record or read images includes a lattice plate disposed in a position equivalent to a scanning...
5198919 Narrow field or view scanner  
This invention discloses a narrow field of view scanner (10) incorporating two multi-faceted polygon scanning wheels (12, 16) having a slightly different number of facets (14, 18). Each scanning...
5196696 Counter rotating optical scanning unit with Fresnel reflection filtering  
An optical scanning unit which employs a mirrored spinner and a plurality of pattern mirrors that counter rotate to produce an omnidirectional scan pattern having a predetermined depth of field....
5194982 Scanning optical system  
A scanning optical system projects a light beam from a light source as a line spread function image in a principal scanning plane before the light beam is made incident onto a scanning deflector. A...
Matches 651 - 700 out of 933 < 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 >