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5659414 |
Means for controlling the power output of laser diodes in a ROS system
The present invention provides a means and method for efficiently and automatically monitoring and adjusting the power output of either a single or a dual beam laser diode array used to provide the...
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5657146 |
Optical scanning apparatus
An optical scanning apparatus for scanning a light beam as a spot image on an image-forming plane apart from a light source, or reversely, for optically reading the graphic image of an object, in...
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5654817 |
Scanning device
A scanning device comprising a scanning member provided for pathwise scanning a medium along a scanning path by means of a scanning beam, said scanning member and said medium being mutually movable...
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5652670 |
Scanning image forming lens and optical scanner
In a scanning image forming lens used in an optical scanner, a light beam from a laser light source is coupled and deflected at an equal angular velocity by an optical deflector and is converged as...
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5650871 |
Single element optics for passive facet tracking
A double bounce passive facet tracking system uses a single passive optical component of a toroidal mirror to induce a beam of light to track a facet of a dual mirror rotating polygon. A beam...
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5650870 |
Rotary polygon mirror
A rotary polygon mirror has reflecting mirror faces formed at side faces of a prism of a predetermined height, and includes an axially symmetrical projection formed along at least parts of outer...
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5650869 |
Point relay scanner utilizing ellipsoidal mirrors
A scanning system uses a polygonal mirror assembly with each facet of the polygon having an ellipsoidal mirror located thereon. One focal point of each ellipsoidal mirror is located at a common...
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5648864 |
Optical scanner
An image forming optical system for an equal speed scan converges a deflected light beam as a light spot onto a scanned face to perform an optical scanning operation at an equal speed. The image...
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5648852 |
Laser beam type distance measuring device
A laser beam type distance measuring device comprises a laser beam emitter; a returning laser beam detector; a polygon mirror rotated about a first axis for reflecting a going laser beam from the...
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5646767 |
Scanning optical system
A scanning optical system with a light beam deflected by an optical deflector is scanned on a scanning surface in a main scanning direction through the scanning optical system. The scanning optical...
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5646766 |
Laser beam scanning apparatus and method
A laser beam scanning apparatus employs a movable reflector (32) having a large number of flat reflective sides (44) a deflector (16) which shifts the laser beam (10) at high speed across a...
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5644419 |
Mirror fixing device for a motor employing a beam reflector
A mirror fixing device for a motor employing a beam reflector which can uniformly fix the beam reflector to a motor housing as well as prevent gas leakage from the housing. The device includes a...
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5642218 |
Method for creating a multi-faceted polygon for a laser writer
A method for manufacturing a multi-faceted polygon for a laser writer, comprises the steps of creating a plurality of scanning surfaces on the polygon; and creating a step which is positioned on a...
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5640265 |
Optical scanning apparatus
This invention discloses an optical scanning apparatus which gives an F-θ function by means of an axis-symmetric aspherical lens serving as a scanning lens and facilitates the manufacture,...
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5633744 |
Supporting apparatus for optical scanning apparatus
A supporting apparatus for an optical scanning apparatus includes an optical source which emits an optical beam. A deflector deflects the optical beam from the optical source. A focusing lens...
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5631763 |
Fθ lens system in a laser scanning unit
An fθ lens system employing two fθ lenses in a laser scanning unit. According to the fθ lens system, a cheap plastic can be used for an fθ lens by lowering the refractive index of one of two...
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5631761 |
Drive motor for rotating multi-faceted mirror
A drive motor for rotating a multi-faceted mirror to change the path of a laser beam in a laser printer or a laser scanner. The drive motor for rotating the multi-faceted mirror has a stator, a...
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5627670 |
Scanning optical apparatus having beam scan controller
A scanning optical apparatus comprises a light source unit, scanning means for deflecting a beam from said light source unit and scanning a scanning surface with the beam, means for detecting the...
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5625482 |
Scanning optical apparatus
A laser scanning apparatus includes a deflecting member such as a polygonal mirror for deflecting a laser beam, a lens holder for integrally holding a plurality of lenses, the plurality of lenses...
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5621562 |
Optical Scanning device
In an optical scanning device, a redirecting flat mirror is provided that redirects a laser flux from a laser source to a polygonal mirror. In order to reduce the size of the optical scanning...
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5619363 |
Laser optical system
A laser optical system for scanning a laser beam using a rotary polygonal mirror made of plastics. In the laser optical system, a portion close to the edge on the side along the rotary direction of...
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5617241 |
Optical beam scanner
A rotating polygon mirror for optical beam scanning. The polygon mirror is fixed to a rotating shaft and is rotated at a high speed by a drive force of a rotating drive with brushes. Additionally,...
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5615038 |
Scanning optical device with aberration compensation feature
A scanning optical device for scanning a material to be scanned with a beam emitted from a light source thereof, has a storage device for storing information relating to the quantity of deviation...
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5610647 |
Image forming apparatus including a plural laser beam scanning apparatus
An image forming apparatus including an image bearing member, a charging unit, a laser beam scanning apparatus and a developing unit. The laser beam scanning apparatus includes a semiconductor...
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5606449 |
Optical scanning device
An optical scanning device includes a laser source, an optical deflector which deflects scanning beams emitted from the laser source in a main scanning direction toward an object to be scanned, and...
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5606448 |
Polygon scanner and production process thereof
A polygon scanner has a lighter rotating shaft on which a polygon mirror is mounted, to prevent a positional deviation of the polygon mirror from the rotating shaft in high speed rotation, in which...
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5604622 |
Laser scanning device
In a scanning optical system, a light emitting device emits a beam to a deflection mirror. The beam is inclined in the direction of the auxiliary scanning, so that the optical axis of the beam...
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5604621 |
Scanner motor
An inner fixed shaft of a scanner motor is secured to a housing by a screw. A rotary polygon mirror is attached to the inner fixed shaft through bearings of a cylindrical portion. A spiral-shaped...
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5604620 |
Light deflector
A light deflector for p-polarized light of wavelength λ includes a light deflector member of a material principally composed of an aluminum allow with an aluminum oxide file, formed on the...
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5600495 |
Structure for attaching scanning optical system
Of lenses constituting an fθ lens, with respect to the lens L2 having a greatest difference between absolute values of surface power at both surfaces thereof, a convex surface having a greater...
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5600475 |
Laser scanner
An improved laser scanner has a scanning lens composed of a single lens element and at least one surface of that lens element is of such a geometry that the curvature in a direction normal to the...
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5598292 |
Method of designing a post-objective type optical scanner and product made by the method
The present invention provides a method of designing a post-objective type optical scanner having an optical deflector composed of cylindrical or spherical reflecting surfaces for deflecting a...
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5598291 |
Polygon mirror mounting structure
A polygon mirror mounting structure mounting a polygon mirror to an outer periphery of a rotor includes a mirror seating surface formed on the outer peripheral portion of the rotor for seating the...
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5596445 |
Light scanning system
In a light scanning system, a semiconductor laser outputs a laser beam which diverges with a beam divergence angle. A condensing/scanning optical system condenses the laser beam and causes the...
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5596444 |
Optical apparatus having laser beam diameter variable according to image data
Image data input from a host computer is converted into data BDATA corresponding to a beam diameter at an image control circuit. BDATA is input into a voice coil 21 driving a collimator lens...
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5596443 |
Polygon mirror rotor and polygon mirror scanner motor having such rotor
A polygon mirror rotor includes a ceramic ring of a generally hollow cylindrical shape having a cylindrical inner surface serving as a sliding surface of a radial hydrodynamic bearing and a pair of...
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5594556 |
Scanner having a misalignment detector
A laser scanning device is disclosed which includes a spinner, one light spot misalignment detector and a beam misalignment corrector. The spinner scans a light beam across a scanning line. The...
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5592337 |
Mirror fastener for optical scanning device
A mirror mount having internal protrusions accepts a snap-in fastener. The snap-in fastener is supported by one side of the protrusions, and resiliently holds the mirror against the remaining side...
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5587826 |
Optical beam scanning apparatus adjusting focal point over entire image forming area by feedback control
In an optical beam scanning apparatus having an electrooptic lens, a focal point of a light beam is adjusted to be exactly positioned on a scanning surface by a feedback control at any positions...
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5585955 |
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...
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5581534 |
Device for realizing a longitudinal pattern of substantially parallel tracks in a record carrier which controls movement of the record carrier on the basis of trackpitch
An optical scanning device for realizing in a recording layer of an optical tape a longitudinal path (i.e. pattern) of substantially parallel tracks. The device includes an optical system for...
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5581416 |
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...
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5574592 |
Rotatable polygon mirror
A rotatable polygon mirror comprising a transparent regular polygonal cylinder having the sides of a regular polygon. The sides are rotationally symmetrical with one another relative to a rotating...
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5574591 |
Polygon scanner and production process thereof
A polygon scanner has a lighter rotating shaft on which a polygon mirror is mounted, to prevent a positional deviation of the polygon mirror from the rotating shaft in high speed rotation, in which...
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5572353 |
Laser scanning device
In a scanning optical system, a light emitting device emits a beam to a deflection mirror. The beam is inclined in the direction of the auxiliary scanning, so that the optical axis of the beam...
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5570222 |
Underwater viewing system for remote piloted vehicle
An underwater viewing system includes a dry and wet end. Illumination energy is provided to the wet end where it is scanned and the resulting scanned illumination is directed to a scene of...
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5570183 |
Apparatus for measuring optical characteristics of a surface in two dimensions using a moving light source
A system for measuring optical characteristics of a surface such as orange peel includes a light source and detector retained upon a support block and translatable as a single unit. The light...
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5568366 |
Compact solar simulator with a small subtense angle and controlled magnification optics
The present invention is directed to a method of simulating a pseudosun using a solar simulator. In the present invention the collector and lens of a lamp are designed to properly focus a plurality...
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5566016 |
Laser beam scanner
A laser beam scanner is composed of an optical source, a beam deflector for deflecting the beam emitted from the optical source and a sensitive drum for performing printing and photosensitive...
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5563729 |
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...
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