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Class 250/227.32 - End illuminated light conductor with noncircular geometric cross section


Subclass of Class 250 - Radiant energy
Definition: Subject matter wherein the light conductor has a noncircular
No. of patents: 50
Last issue date: 08/26/2008


1    
NumberTitleIssue Date
7417235Particle detector for secondary ions and direct and or indirect secondary electrons
A multi-purpose efficient charge particle detector that by switching bias voltages measures either secondary ions, or secondary electrons (SE) from a sample, or secondary electrons that originate from back scattered electrons (SE3), is described. The basic version o...
08/26/2008
7346261Image display apparatus
There disclosed is an image display apparatus having a light source, a scanning member for deflecting a light from the light source to scan a predetermined surface with the light to form a two-dimensional image thereon, a first optical system for guiding a light def...
03/18/2008
7341681Method of manufacturing optical fiber probe and for finishing micro material
In a method for manufacturing an optical fiber probe in which an optical fiber is formed as an optical fiber probe by etching a tip section and sharpening a core region of the optical fiber, the optical fiber is a polarization maintaining optical fiber including the...
03/11/2008
7264971Read-head for optical diagnostic device
A readhead for a photometric diagnostic instrument includes a housing adapted for incorporation within the photometric diagnostic instrument, and an elongated sample table operatively engaged with the housing. The sample table is configured to support elongated reag...
09/04/2007
6819861Laminated optical waveguide array, beam collecting device and laser emission device
A beam collecting device and a laser emission device are disclosed incorporating a laminated optical waveguide array and refraction means therein. The laminated optical waveguide array is composed of a plurality of plate-like optical waveguides made of a material ha...
11/16/2004
6169614Wedged-shape holographic collector
A diffractive collector for an optical scanner includes a wedged-shaped substrate having holographic grating provided on a front surface, a conical-shaped back surface, and at least one detector. Substantially parallel light is made incident upon the fron...
01/02/2001
6127674Uneven-surface data detection apparatus
There is provided an uneven-surface data input apparatus capable of obtaining a fingerprint image which is seldom distorted, in which it is unnecessary to conduct image processing when the fingerprint image is inputted. The uneven-surface data detection a...
10/03/2000
5818033Reading device featuring at least two spaced light emitting elements
A reading device for illuminating a light beam emitted from at least two light emitting elements of different light emission wavelength ranges to an original through a light conductor prevent irregularity of illumination on the original without providing ...
10/06/1998
5716442Light pipe with solar bulb energy conversion system
A light pipe with Solar Bulb energy conservation system that includes: one or more solar and/or artificial light sources; one or more opaque and/or transparent hollow tubular conduits; a reflective material means covering the inside surfaces of the hollow...
02/10/1998
5440140Method and arrangement for determining an at least approximately circular contacting surface using incoherent light and a film waveguide
A method and arrangements for determining an at least approximately circular contacting surface is disclosed. The primary object of finding a simple way of objectively determining the contacting surface of a deformable medium on a plane surface with high ...
08/08/1995
5434406Hemispheric matrixsized imaging optical system
An optical seeker (10) has an objective lens group (12) with a wide field of view (e.g., up to about 180 degrees). Light energy from objects within a field of regard is focused by the objective lens group (12) onto the end of a congruous overlay rod (24) ...
07/18/1995
5192863Optical taper for increasing the effective area of a photodiode in atmospheric free space communications applications
An optical receiver includes a photodiode having a surface area of suitable dimensions to permit reception of a signal at a high bit rate. Also, the optical receiver includes an optical taper having a head and a tail. The head is of greater diameter than ...
03/09/1993
5102226Optical measurement system for determination of an object profile
An optical object profile measurement system utilizes a light beam to scan an object surface and a position detector which receives a light beam reflected from the object surface to obtain position data of individual scanned points on the object surface. ...
04/07/1992
5047623Transparent selective illumination means suitable for use in optically activated electrical switches and optically activated electrical switches constructed using same
A planar transparent light conducting means and an improved optically activated electrical switch made using the novel light conducting means are disclosed. The light conducting means further comprise light scattering means on one or more opposite planar ...
09/10/1991
5006906Integrated semiconductor waveguide/photodetector
An integrated waveguide/detector optical device is fabricated on a semiconductor substrate whose surface includes a step region. Guiding and absorbing layers are grown on the surface in sequence overlying the step region. This is done in a single epitaxia...
04/09/1991
4944116Sensor strip
A sensing strip for stopping or reversing the drive of a door or other movable member having an edge along which the hollow light guide profile is provided. The sensing strip has an elongated hollow body connected to the edge of the door by a support and ...
07/31/1990
4924085Uneven-surface data detection apparatus
An uneven surface data detection apparatus for detecting an uneven surface, such as a human finger, having projected portions and recessed portions. A transparent base having upper and lower surfaces and an upper surface defining an uneven surface contact...
05/08/1990
4900914Wide-angle viewing window with a plurality of optical structures
The invention is directed to a viewing window having a wide-angle view. This window is realized by subdividing the space to be viewed into sectors which requires the utilization of several different prismatic bodies....
02/13/1990
4896048Scattering-type particle detection device for use in high temperature process chambers
A particle detector includes optical fiber for conducting short wavelength radiation received from a radiation source through a chamber in which a semiconductor wafer is being processed. Light that is scattered by contaminant particles in the process cham...
01/23/1990
4894531Photodetector for receiving an index signal of a beam-index cathode-ray tube
A photodetector including a planar light guide of a polygonal shape in which organic phosphor is dispersed in a transparent support material, and a pair of photoelectric conversion elements such that light having a wavelength range for exciting the organi...
01/16/1990
4855588Cylindrical wide field receiver element
A wide-field optical receiver element for determining the direction of a distant source of electromagnetic radiation. A cylindrical reflecting surface is used in an off-axis configuration to produce line images corresponding to sources over the field of v...
08/08/1989
4830485Coded aperture light detector for three dimensional camera
High speed readout is achieved in a triangulation ranger by a coded aperture light detector which provides a direct digital representation of a range or height position. A light spot reflected from the surface is optically spread into a line segment so it...
05/16/1989
4818861Film image reading out device
In a film image reading out device, in which one surface of a film, where images are recorded, is scanned repeatedly with a laser light beam along a scanning line and images are read out by detecting continuously light, which has passed through the film, ...
04/04/1989
4815816Image transportation device using incoherent fiber optics bundles and method of using same
The invention includes a fiber optic bundle comprising a plurality of individually optic fiber elements. Each of the optic fiber elements has a first end and a second end. The first ends of the optic fiber elements have a smaller cross-sectional area than...
03/28/1989
4814605Entrance system for a photodetector having a 180 degree image angle and detector provided therewith
Disclosed is an entrance system having an image angle of 180° suite for a radiation detector for detecting differing wavelengths of sunlight, comprising a hemispherical shell of light transmitting material; a tube of light transmitting material extendin...
03/21/1989
4806018Angular reflectance sensor
An angular reflectance sensor having no moving parts and capable of the essentially simultaneous measurement of the reflectivity of a surface at a plurality of angles. The sensor comprises a quarter pitch graded index lens (78) having first end face (82) ...
02/21/1989
4800257Optoelectronic reading pen
An optoelectronic reading pen for scanning optically encoded information, applied to an information carrier, particularly in the form of a bar or line code, including means for illuminating the information carrier and an optoelectronic sensor which receiv...
01/24/1989
4794266Method and apparatus for light transmission measurement by sending light, measuring received light and computing transmittance
Measurement equipment based on the measurement of light transmission are plagued by changing characteristics of protective glass surfaces due to contamination or other factors. In a method, light transmission is measured by sending light from a transmitte...
12/27/1988
4790641Space telescope connected to a star tracker
In order to be able to determine in a simple manner the angular deviations etween the optical axes (OT, OS) of a telescope lens (2) and of a star tracker lens (8) which arise during the course of operation of a space telescope due to external influences, t...
12/13/1988
4775637An immunoassay apparatus having at least two waveguides and method for its use
The unit consists of a cuvette and light guiding means comporting more than one waveguide element in contact with the solution to be analyzed. During operation, signals issuing from said waveguide elements provide data on two or more parameters in the sol...
10/04/1988
4775791Transparent sheet light collector for photostimulable phosphor imaging
A light collector for collecting and detecting emitted light from a raster scanned photostimulable phosphor sheet in a photostimulable phosphor imaging apparatus includes a generally rectangular slab of transparent material having a thickness greater than...
10/04/1988
4774404Optical path blockage detecting device
An optical path blockage detecting device includes optical conductive members located between light emitting elements and light receptor elements and extending parallel to optical paths defined between the light emitting and receptor elements. Each optica...
09/27/1988
4772787Monolithically integrated opto-electronic semiconductor component
A monolithically integrated opto-electronic semiconductor component characterized by a semiconductor substrate having a first surface and a second surface extending parallel to each other, a strip waveguide being applied to the first surface to conduct ra...
09/20/1988
4737626Photoelectric touch panel having reflector and transparent photoconductive plate
A photoelectric touch panel characterized in that one side is provided with a substrate having light emitting elements and light sensing elements mounted thereon and an opposing side of the touch panel has a multi-directional reflecting surface for collec...
04/12/1988
4703173Probe for collecting light for a radiation monitoring device
Apparatus for monitoring the intensity of light comprising an optical waveguide having a light-collecting tip end with a diffusing surface which is shaped so that it can collect and transmit light rays into the waveguide. The structure of the tip is such ...
10/27/1987
4678906Device for transmitting through an optical coupling data issuing from a steering wheel to an element mounted on a vehicle
This device for transmitting data, coming from a plurality of control elements (8 to 11) mounted on a steering wheel of a motor vehicle, to a system recognizing the data and also mounted on the vehicle, comprises light sources (12 to 15) mounted on the st...
07/07/1987
4568984Method and apparatus for scanning masters
A novel apparatus and method for point-to-point and line-by-line opto-electronic scanning of masters mounted on a transparent master carrier and wherein simultaneous opaque and transparency scanning is accomplished to generate opaque and transparency scan...
02/04/1986
4525630Apparatus for detecting tape on sheets
Apparatus is disclosed for detecting the presence of shiny tape on a printed note, for example a banknote. An optical fibre fishtail array supplies visible light from a source (A) to a lengthwise strip of the banknote. A first array of photodetectors (D) ...
06/25/1985
4493555High sensitivity focal sensor for electron beam and high resolution optical lithographic printers
A three slit interferometric focus control device capable of focal positioning accuracies on the order of 300 angstroms. The device includes a zero path Michelson interferometer with reference and movable legs comprising, respectively, an annular referenc...
01/15/1985
4472046Image density detecting device for image forming apparatus
An image density detecting device for an image forming apparatus includes a substantially rectangular diffusing member for receiving light from document through a focusing light-transmission member and a plurality of photodiodes embedded at a suitable int...
09/18/1984
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