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7623285 Method and device for opto-acoustical imagery  
The inventive method for opto-acoustical imagery of an image object consists in a) generating an incident optical wave and a reference optical wave coherent therewith, b) oscillating the image...
7609875 Scanner system and method for mapping surface of three-dimensional object  
A scanning system is disclosed including a hand-held scanning device for capturing three-dimensional information of an object. The scanner system includes a high-speed transceiver having a...
7595879 Optically measuring substances using propagation modes of light  
This application describes designs, implementations, and techniques for controlling propagation mode or modes of light in a common optical path, which may include one or more waveguides, to sense a...
7551342 Optical frequency comb generator and optical modulator  
A resonance system ( 14, 15 ) is formed by a light incident side reflection mirror and a light exiting side reflecting mirror, arranged parallel to each other. The light incident on an incident...
7535617 Portable acousto-optical spectrometers  
A portable acousto-optical (AO) spectrometer system comprised of at least one AO crystal cell device specially designed for cancellation of side-lobe noise at a desired tuned wavelength of...
7391550 Method and apparatus for optical broadband frequency chirp  
Techniques for producing an optical broadband frequency sweep or chirp, include generating a narrowband frequency chirp and a frequency-shifted replica. The narrowband chirp has an optical carrier...
7283290 Acousto-optic devices having highly apodized acoustic fields and methods of forming the same  
An acousto-optic (AO) device for generating a highly apodized acoustic wave field includes a piezoelectric transducer crystal for emitting an acoustic wave having a ground electrode disposed on one...
7057799 Tuning a narrow band filter for telecommunication applications with an acoustic optical tunable filter  
An optical tunable filter that includes a thin-film filter for band-passing at least two bands of wavelengths. The tunable filter further includes a tunable band-passing device tunable over the at...
7006715 Optical modulator of clock modulation type  
A first optical waveguide, a second optical waveguide, a first electrode, and a second electrode are integrated on a substrate. An optical modulator is provided with a clock signal generator for...
6990260 Extended intensity-based optical sensor  
An extended optical sensor comprises a plurality of equally spaced intensity-based point sensors connected in parallel such that the optical path lengths are the same within the extended sensor...
6943881 Measurements of optical inhomogeneity and other properties in substances using propagation modes of light  
This application describes designs, implementations, and techniques for controlling propagation mode or modes of light in a common optical path, which may include one or more waveguides, to sense a...
6906844 Mounting system for an optical assembly of a photoelastic modulator  
An improved system for mounting an optical assembly of a photoelastic modulator (PEM) to permit free vibration of the optical assembly without introducing any stress or strain on the optical...
6903820 Measurements of substances using two different propagation modes of light through a common optical path  
This application describes designs, implementations, and techniques for controlling propagation mode or modes of light in a common optical path, which may include one or more waveguides, to sense a...
6885491 Diffraction-optical component, illumination system and exposure system comprising such a diffraction-optical component as well as an exposure method employing such an exposure system  
A diffraction-optical component for providing a radiation-diffracting grating structure is proposed, comprising a surface wave device including a substrate 43 , a surface wave source 47 ...
6836610 Electrical variable optical attenuator  
An electrical variable optical attenuator ( 10 ) of the present invention has a housing ( 1 ), a cover ( 2 ), an attenuating means ( 3 ), an optical module ( 4 ), an electrical driving element ( 5...
6806986 Wavelength converter and wavelength converting apparatus  
A wavelength converter has a phase modulated periodically modulated structure, where a nonlinear optical coefficient is periodically modulated at a fundamental period Λ 0 and the phase of the...
6804042 Method for producing highly accurate frequency and FM of a laser  
A method and apparatus for accurately and precisely controlling the frequency (wavelength) and periodic frequency modulation of a laser are provided. An ADC (Analog to Digital Converter) is used to...
6771412 Acousto-optical devices  
The present invention relates to acousto-optic applications of parametric optical apparatuses that use the mechanical energy of elastic oscillations to convert light over a wide range of...
6741381 Modified tunable acousto-optic filter  
Acousto-optical filter systems for filtering a light beam by generating undiffracted and diffracted light beams within a birefringent crystal and by suppressing the diffracted beam within or at a...
6654127 Optical delay line  
One embodiment of the present invention is an optical delay line that comprises a plurality of optical elements in optical communication with each other, wherein: (a) at least one of the plurality...
6587255 Acousto-optic scanning system with fast non-linear scan  
An acousto-optic scanning system, which relies on two counter propagating acoustic waves with the same frequency modulation. This scheme completely suppresses the linear frequency chirp, and thus...
6490075 Acousto-optic tunable filter hyperspectral imaging system  
The present invention has applications that include detecting color variation in a region, for example, color variations due to temperature changes in an area of ocean water, and, in a more...
6454437 Ring lighting  
An illuminator has a printed circuit board supporting a ring of light emitting diodes (LEDs). An annular Fresnel lens and the board are both mounted in a housing having a central though-hole for a...
6433916 Octave spectra acousto-optic tunable filter  
A method for increasing the tunable range of a single acousto-optic tunable filter includes the steps of generating an active steering beam on a piezoelectric transducer and configuring the...
6424451 Phase array acousto-optic tunable filter based on birefringent diffraction  
An acousto-optic tunable filter (AOTF) utilizing phased array transducers for use as dynamically reconfigurable wavelength division multiplexer. The new type of AOTF has the unique capability of...
6421164 Interferometeric imaging with a grating based phase control optical delay line  
An apparatus for performing high speed scanning of an optical delay and its application for performing optical interferometry, ranging, and imaging, including cross sectional imaging using optical...
6392821 Light display projector with wide angle capability and associated method  
A projector for producing a visually perceptible light image along predetermined vector coordinates, includes a light source for producing a beam of light along a light path; a deflector positioned...
6356088 Highly compact laser scanning microscope with integrated short-pulse laser  
The invention describes a highly compact laser scanning microscope with integrated short-pulse laser. Direct coupling or a fiber coupling of the short-pulse laser with the laser scanning microscope...
6307665 Acousto-optic modulator  
An acousto-optic modulator including an ultrasonic medium for controlling light from an optical source through diffraction, two transducers each having one electrode formed on one side thereof, the...
6282011 Grating based phase control optical delay line  
An apparatus for performing high speed scanning of an optical delay and its application for performing optical interferometry, ranging, and imaging, including cross sectional imaging using optical...
6188507 Variable acousto-optic spectrum projector and method of operation  
A variable acousto-optic spectrum projector is disclosed. The invention may include a radiation source, an entrance slit, a lens or mirror, a Bragg cell, an arbitrary function generator for driving...
6052216 Laser and beam intensity modulation system for imagesetting device  
A laser beam intensity modulation system has a variable delay circuit that is used to control the relative delay in the delivery of a video signal between two cascaded AOM's. This delay circuit is...
5986784 Adaptive polarization diversity detection scheme for coherent communications and interferometric fiber sensors  
A method and apparatus for overcoming polarization induced signal fading in both heterodyne communication and interferometric sensing. An adjustable birefringent element in series with a...
5909304 Acousto-optic tunable filter based on isotropic acousto-optic diffraction using phased array transducers  
An acousto-optic tunable filter based on isotropic acousto-optic diffraction using phased array transducers. The isotropic AOTF provides the advantages of narrow optical passband, low acoustic...
5812302 High-speed frequency modulation signal source and high-speed variable optical wavelength filter  
Disclosed is a high-speed frequency modulation signal source which has a voltage-controlled oscillator to which a voltage is input to change an oscillation frequency; and a frequency down converter...
5790167 Optical scanning device, optical scanning method, and image forming apparatus using the same  
An optical scanning device having a scanning speed which can be used in a laser beam printer, a digital copier, a facsimile apparatus or the like, an optical scanning method using the optical...
5739944 Support system for resonating element of phase modulator  
A phase modulator is provided with supports attached to the resonating element. The supports have a length which is an odd number of quarter wavelengths of a longitudinal acoustic wave excited in...
5623360 Time delay beam formation  
Optical systems are disclosed which are capable of generating and rapidly changing time delays of electrical signals for true time delay beam formation and beam steering and for signal processing...
5587829 Method and apparatus for signal filtering  
A signal filter, and method of signal filtering, in which an optical signal s spatially dispersed according to frequency, and undesired frequencies blocked out. In an embodiment, a Bragg cell...
5537242 Liquid crystal millimeter wave open transmission lines modulators  
Low-cost, thin-layer liquid crystal (LC) millimeter wave (MMW) phase modulators and phased array antennae are provided based on several types of open transmission strip-line, parallel-line, and...
5465171 Optical modulator device using a thin film resonator  
An optical modulator device comprised of a semiconductor laser acoustically coupled to a thin film resonator is disclosed herein. The thin film resonator includes a piezoelectric crystal layer...
5452313 Optical feedback eliminator  
Deleterious feedback reflections from a power amplifier into a laser master oscillator are eliminated by interposing a nonreciprocal frequency shifter between the oscillator and amplifier, which...
5361159 Angular acousto-optical deflection device and spectrum analyzer using such a device  
Devices for deflecting an optical beam under the action of an ultrasonic beam propagating in a block of active acousto-optical material and operating under Bragg tangential conditions, with the...
5247388 Continuously variable delay lines  
An acousto-optic apparatus is described that varies the time delay of electrical signals over a continuum of delays. In the preferred embodiment, a light source, which can be either coherent or...
5220163 Microwave adaptive transversal filter employing variable photonic delay lines  
By applying a spatial frequency dependent phase compensation in an optical heterodyning system, a variable rf delay line can be synthesized. The system is able to generate continuously variable...
5191465 Optical apparatus for alignment of reticle and wafer in exposure apparatus  
An optical apparatus for aligning a reticle and a wafer together in connection with reduction projection onto the wafer of an image of a circuit pattern formed on the reticle. Two light beams...
5166822 Light beam frequency comb generator  
A light beam frequency comb generator uses an acousto-optic modulator to generate a plurality of light beams with frequencies which are uniformly separated and possess common noise and drift...
5153597 Acousto-optical classifier  
An acousto-optical classifier for classifying wide bandwidth signals such as high resolution radar returns of ships or very short pulse length signals of radar emitters. This is accomplished by...
5105304 Acousto-optic modulation device  
An acousto-optical modulation device comprises a plurality of acousto-optic modulators arranged in series with each other, to receive a zero-order light from a previous stage of the modulators. A...
5040135 Method of fringe-freezing of images in hybrid-optical interferometric processors  
The invention is a method for obtaining fringe visibility in hybrid-optical interferometric processors. Encoded data defining an image is utilized to provide both a timing input signal and a method...
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