Matches 501 - 550 out of 933 < 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 >
Match Document Document Title
5757533 Scanning lens and optical scanner using the same  
An optical scanner including a semiconductor laser device, aperture, collimator, cylindrical lens, polygonal mirror and one fθ lens element molded from plastics. The first surface of the fθ lens...
5757532 Optical scanner  
An optical scanner which causes a light beam to impinge on a photosensitive body along an optical axis. The light beam passes through a lens in a transparent parallel plate before impinging on the...
5751464 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...
5751463 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...
5751462 Multi-beam exposure unit  
This invention has as its object to provide an image forming apparatus which can provide a color image free from any color misregistration with low cost, and a light scanning unit suitable for the...
5748357 Optical detecting apparatus  
An optical detecting apparatus has a light source for emitting laser beams and a collimator and cylindrical lenses for collecting the laser beams. A mirror has first faces arranged in a polygon for...
5748356 Optical scanning apparatus  
An optical scanning apparatus has an F-θ function with one aspherical lens having a toric configuration that compensates for the vibration of a rotating polygon mirror. The optical scanning...
5748355 Multi-beam laser exposure unit having anamorphic lens comprising three lenses  
A multi-beam laser exposure unit includes a light beam deflector for deflecting light beam in a predetermined direction, a plurality of laser devices, a pre-deflection optical system, including a...
5748354 Reflection-type scanning optical system  
A reflection type scanning optical device includes a light source; a deflector for deflecting and scanning the light beam emitted from the light source; a first imaging optical system, between the...
5748352 Optical scanning device  
Light beam from a light source is changed by a diaphragm so that the center of the light beam is removed. The changed light beam is deflectedly scanned by a deflection device and passed through a...
5745277 Scanner optics and image formation apparatus using the same  
The scanner optics of this invention includes a condensing lens arrangement composed of a first aspherical lens having a positive refractive power and a convex meniscus surface on the side of the...
5742420 Optical scanner for generating scanning lines on all sides of an object  
Optical scanner with a light source (1) for producing a light beam (A), focusing optics (2), means for producing a predetermined first scanning pattern (SP1-SP4) of separate scanning lines, first...
5739940 Multi-beam scanning optical device with a chromatic aberration cancellation feature  
A high-performance, low-cost multi-beam scanning optical device prevents picture quality from being degraded owing to the chromatic aberration of a cylindrical lens and an image formation lens...
5737112 Scanning optical systems  
A scanning optical system that includes a light source for emitting a beam of light, a light deflector for deflecting the beam of light in the main scanning direction, and a scanning lens system...
5734489 Multi-beam laser exposer unit  
A multi-beam laser exposure unit of the present invention includes a light beam deflector for deflecting a light beam in a predetermined direction, a plurality of laser devices, a pre-optical...
5726793 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...
5726791 Laser beam scanning apparatus  
A laser beam scanning apparatus used for scanning a surface of a photoreceptor in an image forming apparatus. In the laser beam scanning apparatus, the laser beam emitted from a semiconductor laser...
5724172 Optical scanning apparatus  
An optical scanning apparatus is disclosed which comprises: a polygonal mirror for receiving a laser beam modulated by an image signal and for repetitively deflecting the laser beam by every line...
5721631 Image forming light scanning apparatus  
A scanning apparatus has a luminous flux deflector and a single fθ lens. The deflector deflects a convergent luminous flux on a scanned surface at a uniform angular velocity. The fθ lens is...
5719694 Device for the deflection of light beams  
A device for deflecting light beams, in particular laser beams, has mirror surfaces which are arranged at a drivable rotating body. The rotating body is formed of monocrystalline material and the...
5717511 Optical scanning system  
An optical scanning system which converges light flux on a photoconductive member by an optical scanning lens after the light flux from a light source is coupled by a coupling lens (a condensing...
5716036 Mounting structure for mounting a polygon mirror  
A mounting structure for mounting a polygon mirror on a rotating body includes a mirror seat formed in the rotating body for mounting the polygon mirror thereon and a fixing device for fixing the...
5715079 Scanning optical system  
A scanning optical system has a deflector and a scanning lens. A convergent beam is deflected at a uniform angular velocity by the deflector. The scanning lens forms the scanned beam into an image...
5715078 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...
5715021 Methods and apparatus for image projection  
Method and apparatus for a multi-application, laser-array-based image system utilizes three linear laser arrays. Each linear array generates multiple (N>1) parallel output beamlets at one of the...
5712719 Optical scanning device  
A polygonal mirror used to scan a laser flux is inclined with respect to a mounting surface of a housing of the optical scanning device, in such a manner that the beam incident to the polygonal...
5710654 Scanning lens and an optical scanner using the same  
Improved optical scanner comprises semiconductor laser 10, aperture 12, collimator 14, cylindrical lens 16, polygonal mirror 18 and single-element fθ lens 22 which is formed of an amorphous...
5706119 Optical scanning apparatus with a symmetric filter  
There is provided a filter having a member of absorption material between a convex lens and a polygonal mirror. This member of absorption material is formed by coating a thin metallic film. Due to...
5703709 Method and device for color laser marking  
The present invention provides a method and a device for color laser marking for attaining visible coloring without drastic modification of conventional devices and without using dyestuffs. To this...
5701191 Optical scanner  
The housing 2 is integrally formed with a cylindrical support portion 6. A cylindrical bore 30a is formed through the support portion 6. An inner diameter of the bore 30a is made substantially...
5701190 Laser scanner and scanning lens  
Rays of light from a laser light source are permitted to form a line image at a reflecting face of a rotating polygonal mirror via a line image forming optical member and the rays of reflected...
5696617 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...
5694236 Optical scanning device  
An optical scanning device having: a beam diameter shaping optical system which shapes a diameter of a light beam from a light source and focuses the light beam as a line image which is long in a...
5694235 Three-dimensional moving image recording/reproducing system which is compact in size and easy in recording and reproducing a three-dimensional moving image  
Upon picking up an image, light beams passing through a focal point of an image-forming lens are directed to an optical detector array comprising a plurality of optical detectors. Each optical...
5691833 Rotary polygon mirror device  
In a rotary polygon mirror device comprising a cylinder rotatably supported for holding a polygon mirror and a casing over the outer peripheral surface of said cylinder through a predetermined gap,...
5687017 Rotary polyhedral mirror and method for producing the mirror  
A rotary polyhedral mirror includes a plurality of reflective surface portions and a connecting portion connecting the plurality of reflective surface portions, wherein the plurality of reflective...
5687016 Light beam deflecting device  
In a light beam deflecting device for deflecting a laser beam by using a rotary polygon mirror, the rotary shaft of the rotary polygon mirror is rotatably supported by a plurality of ball bearings...
5682258 F. θ lens for optical scanning system  
An fθ lens for an optical scanning system is comprised of four lens elements, arranged in order from the object end to the image end: a first meniscus element of positive power having a concave...
5680244 Scanning optical system  
A scanning optical system has a deflector and a scanning lens. A convergent beam is deflected at a uniform angular velocity by the deflector. The scanning lens forms the scanned beam into an image...
5675431 Raster output scanner having externally mounted mirrors  
Raster output scanner assemblies, and systems which use such assemblies, having mirrors mounted on the outside of an outer frame. Slits in the outer frame enable light to reflect from the mirrors....
5675430 Rotary polygon mirror  
A blank is formed of a sintered alloy by sintering a mixture of powdered materials including powdered aluminum, and at least one of powdered silicon, powdered magnesium, and powdered chromium. This...
5673136 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...
5673134 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...
5671193 Rotary polygonal mirror and method of manufacturing the same  
A rotary polygonal mirror for a deflection scanning device includes a regular prism-shaped main body portion consisting of a resin material, a projecting portion which projects from an upper...
5671081 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...
5666219 Rotary polygon mirror type light deflecting system  
Rotary polygon mirror type light deflecting system having a labyrinth ring fixed to an end of a fixed shaft. An outer circumferential surface of a labyrinth ring is caused to confront an inner...
5663827 Polygonal mirror of synthetic resin and producing method thereof  
A polygonal mirror of synthetic resin of low cost and which is faithful to the desired standard mirror with respect to flatness, shape, size and other characteristics is made by improving the shape...
5661588 Rotary polygon mirror type light deflecting system  
A rotary polygon mirror type light deflecting system including a mirror, a hub, and a fixed shaft made of materials whose coefficients of linear expansion are equal to one another. A fixed shaft is...
5661587 Optical scanning system  
An optical scanning system including a light source which emits a light beam; a light deflector having at least one reflecting surface providing a deflecting surface for deflecting the light beam...
5659532 Optical scanning apparatus with polygon mirrors reflecting light beam at a constant speed larger than dθ/dt  
An optical beam scanning apparatus comprises: an beam source emitting an optical beam; a deflector deflecting the optical beam around a center line with a deflection angle θ radians in a main...
Matches 501 - 550 out of 933 < 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 >