|
Match
|
Document |
Document Title |
|
|
6538690 |
Timing control in acousto-optic scanner based on acoustic velocity of traveling wave lens
Pixel clock and beam scan timing of an acousto-optic scanner are controlled by an acoustic velocity-driven, phase locked loop containing an adjustable voltage controlled pixel clock generator,...
|
|
|
5191466 |
High resolution two-directional optical scanner
A high resolution two-directional optical scanner, comprising a source of very high frequency light pulses, a first acousto-optic cell for diffracting the light pulses towards an image plane so as...
|
|
|
5121247 |
Two-dimensional optical scanning system
A two-dimensional optical scanning system two fine-optical deflectors for a stepwise and fine deflection of a laser beam in two directions perpendicular to each other, whereby a fine scan zone can...
|
|
|
5097480 |
Acoustic modulation apparatus for laser
The invention comprises a laser light source for a raster laser display. The laser light source comprises a laser cavity, a lasing medium within the cavity, a lasing light source and a series of...
|
|
|
5086341 |
Laser scanning apparatus having two, parallel, acousto optic deflectors for the horizontal scan
This invention relates to a laser scanning apparatus which raster-scans a laser beam by using an acousto-optic deflector. In this laser scanning apparatus, the laser beam is horizontally scanned by...
|
|
|
4992858 |
Laser beam scanning apparatus
A laser beam scanning apparatus deflects laser beams of different wavelengths to scan an object or medium in at least one direction using an acousto-optic deflector. The angle of scanning...
|
|
|
4971413 |
Laser beam depicting apparatus
A laser beam depicting apparatus adapted to depict a raster image by modulating a laser beam by image data and raster-scanning the laser beam by the reflecting surfaces of a rotational polygonal...
|
|
|
4946233 |
Light scanning apparatus
In a light scanning apparatus, such as in a laser printer, an optical switch is provided between a light source and an acousto-optic light-modulating element for modulating the light according to...
|
|
|
4764672 |
Structure of high-resolution polygon laser scanner
An improved high-resolution laser scanner is able to make each mirror facet of a rotating polygon mirror generate two or more scanning beams through the use of beam splitting and projection by a...
|
|
|
4611140 |
Saw-CTD parallel to serial imager
A line imager comprising: a semiconductor body; a planar, transparent piezoelectric body having a main surface overlying and in proximity to the semiconductor body; wave propagation means for...
|
|
|
4600853 |
Saw-CTD serial to parallel imager and waveform recorder
A device for the high speed recording of photon images and nonrepetitive electrical waveforms which comprises a waveform recorder wherein surface acoustic waves excited in a can be GaAs, not...
|
|
|
4577933 |
Gap modulator for high speed scanners
An acousto-optic modulator for a high speed/high resolution raster output scanner, the modulator have a substrate composed of substantially pure gallium phosphide, with a relatively thin high...
|
|
|
4523293 |
Two-dimensional bulk acoustic wave correlator-convolver
A two-dimensional bulk acoustic wave correlator-convolver having an acoustic mirror positioned two focal lengths from an integrated circuit-acoustic transducer array. The image, rather than the...
|
|
|
4477184 |
Obstacle detection system for use in vehicles
An obstacle detection system for vehicles comprises a laser radar mounted on the front end of a vehicle and modulated by drive pulses of high rate. The laser pulses are deflected in two orthogonal...
|
|
|
4389590 |
System for recording waveforms using spatial dispersion
A waveform recorder wherein surface acoustic waves excited in a piezoelecc-insulator-semiconductor layered structure produce a traveling electric field in the semiconductor substrate. Charges...
|
|
|
4350916 |
Surface acoustic wave device having buried transducer
An acoustic wave device wherein each electrode element of an interdigital transducer is buried or embedded between a pair of layers of piezoelectric material. The use of a multi-layer stack of...
|
|
|
4307929 |
Method of scanning a laser beam in a straight line
A method of scanning a laser beam in a straight line is disclosed wherein a series of different frequency overlapping signals are applied to a first axis transducer of an acousto-optic modulator...
|
|
|
4295145 |
Acousto-optically modulated laser scanning arrangement for correcting for interference appearing therein
In those high speed laser scanning systems, particularly those used in printing, employing an acousto-optical modulator driven at two or more carrier frequencies for scanning with a plurality of...
|
|
|
4281350 |
Acoustoelectric device for reading or processing a two-dimensional optical image
The device comprises a piezoelectric medium associated with a semiconducting and photosensitive medium on which the optical image is projected. Four transducers placed on the piezoelectric medium...
|
|
|
4279001 |
Image readout device with electronically variable spatial resolution
This invention relates to the use of a standing acoustic wave charge storage device 11 as an image readout device. A frequency f 1 22 is applied to the storage transfer device to create a...
|
|
|
4268871 |
Scanning optical system for formation of a half tone image
A scanning optical system having an optical system capable of controlling formation of a half tone image which is constructed with a light source, a first aperture which restricts a light beam of...
|
|
|
4253725 |
Single sideband scanner
A scanner using spatial modulation of the light profile incident upon an acousto-optic modulator in which the deflector clear aperture window is decentered from the optical axis of the system so...
|
|
|
4236179 |
Versatile microsecond multiple framing camera
A versatile microsecond multiple framing camera generates a switched beam of illumination derived from a laser and switched by an acousto-optic modulator. The illumination is focused on a subject,...
|
|
|
4225887 |
Optical image acousto-electric reading device
An acousto-electric analysis device for an optical image in one or two dimensions. It comprises a piezoelectric substrate and a semi-conductor substrate with a diode network on the face which is...
|
|
|
4199783 |
Optical system for recording and reading an information on a tape
An optical system for recording n information signals on a photosensitive tape in the form of a discontinuous track made up of parallel track sections by means of n light beams having a two states...
|
|
|
4142212 |
Two-dimensional surface acoustic wave image scanning
An output electrode which is angularly oriented with respect to the reading and scanning electrode is used with associated circuitry to provide a two dimensional image scan for an acousto-optical...
|
|
|
4122495 |
Method and a device for an electro-acoustic reading of an optical device image
A method and a device for the one-dimensional analysis of an optical image and its conversion into an electrical signal, of which the amplitude characterizes the luminous intensity at each point....
|
|
|
4107701 |
Acousto-optic snapshot recorder
Apparatus for recording a serial line of electrical data as a spatial array of optical data. The apparatus employs an acousto-optic device through which the electrical signal to be recorded is...
|
|
|
4099206 |
Piezoelectric device responsive to optical image for generating an electrical signal
A piezoelectric substrate is subjected to the continuous excitations produced by a high-frequency electric field of fixed radian frequency α applied between its two opposite faces; high-frequency...
|
|
|
4097900 |
Electro-acoustic device for reading a two dimensional image by means of an electrode network
A device for the line-by-line electrical analysis of an image. It comprises a piezo-electric medium associated with a semiconductor medium scanned by the interaction of two elastic waves propagated...
|
|
|
4084192 |
Electro-acoustic devices for analysing optical image
A reading device for analysing an optical image in one dimension and for converting it into an electrical signal the amplitude of which characterizes the light intensity of the elemental zones...
|
|
|
4084191 |
Acousto-optical scanner
A scanning apparatus for converting an optical line image to a serial electrical analog signal by launching an acoustic wave in a plurality of ridged waveguides each of a different length. In one...
|
|
|
4084189 |
Acoustro-electric scanner by phonon echo phenomenon
A thin film optical scanner using phonon echoes. A piezoelectric (an insulator or a semiconductor) crystal has deposited thereon a photoconductor. An acoustic transducer propagates a broad strain...
|
|
|
4069507 |
Device for the two-dimensional reading of optical images, using elastic surface waves
A device for reading two-dimensional optical images. It comprises a piezoelectric substrate on which two transducers transmit elastic waves in two separate directions, and a semiconductive and...
|
|
|
4065791 |
Interaction of images with strain waves to derive Fourier transform components of the images
A system relying on the interaction of images and strain waves uses a technique called pseudo-beam steering to obtain selected components of the two-dimensional Fourier transform of the images. In...
|
|
|
4053934 |
Measuring the quality of images
Method and apparatus for measuring the quality and sharpness of images and for using the measurement results to control parameters such as camera and projector focusing, range finding, optical...
|
|
|
4041536 |
Optical scanner
This disclosure provides an optical scanner for transforming an optical image into electrical signals. Through practice of this disclosure an optical image is projected onto a surface of a...
|
|
|
4028565 |
Semiconductor visible image storage device
An improved optical storage device capable of storing optical images in a charge pattern in a high-resistivity piezoelectric semiconductor layer on a semiconductor substrate. A semiconductor...
|
|
|
4025954 |
Piezoelectric device for image readout
A device which converts the spatial distribution of the received light energy into a modulation of an electric signal. It comprises: a non-piezoelectric substrate; an electro-mechanical transducer...
|
|
|
4019200 |
Monolithic surface acoustic wave signal storage device
Monolithic acoustoelectric signal storage device and means for generating a surface acoustic wave on piezoelectric material and propagating the wave into a storage region of the device. An electric...
|
|
|
4001577 |
Method and apparatus for acousto-optical interactions
Method and apparatus for causing light to interact with surface acoustic waves so that the light is either scattered out of or coupled into an optical wave guide. In the case of scattering when the...
|
|
|
3992682 |
Two-dimensional laser scanning system
A two-dimensional dye laser scanning system is provided wherein a dye laser having a controlled output wavelength is combined with a diffractive beam-bending device to produce a near infrared or...
|
|
|
3970778 |
Monolithic acoustoelectric image pick-up device
Monolithic acoustoelectric imager using a multistrip coupled convolver. The multistrip coupler of the convolver senses the electric fields associated with counter-propagating surface acoustic waves...
|
|
|
3944732 |
Method and apparatus for improving acousto-electric scanning
An acoustically scanned, optical imaging system for converting patterns of light into electrical signals. The system includes a monolithic convolver that scans incident light patterns using two...
|
|
|
3935564 |
Charge storage and monitoring apparatus utilizing acoustic waves
Charge storage and monitoring apparatus including a barrier electrode capable of supporting a charge adjacent a piezoelectric semiconductor to control the depletion layer and provide an output...
|
|
|
3935566 |
Multiple-channel information translation system and method
A multiple-channel information translation system includes a Bragg light-sound interaction cell interposed in the path of a spatially coherent input light beam. Carrier generating means generates a...
|
|
|
3903364 |
High resolution line scanner
A high resolution line scanner for converting optical images into electrical signals by a means of photoconductor switches and strain induced resistor sensing. The line scanner includes (1) a...
|
|
|
3882273 |
Optical beam scanning system
A system for scanning a laser beam at television rates includes an acousto-optic Bragg-angle deflector for horizontal scanning, and a rotatable galvanometer mirror for vertical scanning. The...
|
|
|
3851951 |
HIGH RESOLUTION LASER BEAM RECORDER WITH SELF-FOCUSING ACOUSTO-OPTIC SCANNER
Laser beam recording and playback system in which light is focused upon an image plane by interaction with frequency modulated acoustic pulses in a Bragg cell and is scanned scross the image plane...
|
|
|
3827075 |
SOLID STATE TELEVISION CAMERA
A solid state television camera wherein the light from an object is focused on a plurality of bundles of optical fibers. The optical fibers on each bundle are respectively connected to the light...
|