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8094300 |
In-situ contaminant removal in optical packages
A method of controlling an optical package is provided where the average power density of the output beam of the semiconductor laser on the input facet of the wavelength conversion device in a...
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8068221 |
Frictional pivots for gravitational alignment
A frictional pivot 100 for use in a device measuring gravitational alignment is provided. The frictional pivot 100 comprises a gravity-responsive directional means 200 for indicating a datum...
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7987712 |
High temperature seal assembly for optical sensor
A seal assembly for an optical sensor employed in a high temperature environment is disclosed which includes an elongated metal guide tube having a distal end portion defining an open distal end...
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7933004 |
Method of acquiring information with a microcavity laser
A method for acquiring information includes the steps of preparing a laser having a micro-cavity, and detecting a light emitted from the laser. An oscillation state of the laser is changed...
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7859658 |
Thin micropolarizing filter, and a method for making it
A polarizing filter includes a portion with a filtering layer having a plurality of openings extending therethrough, where this portion has a maximum physical thickness in a radiation travel...
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7856331 |
Scanner calibration
The present invention provides a method and system for optimizing the time required for scanning a document with any conventional scanner. More specifically, the present invention will utilize...
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7852481 |
Apparatus and method for measuring optical property
An optical property measuring apparatus and an optical property measuring method of the invention determine a specified optical property of a sample by using a distribution function indicating a...
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7852469 |
Particle detector
A particle detection device and method wherein a bulk sample of particles is selectively collected based on scattering properties of the particles and fluorescence properties of the particles. The...
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7839497 |
Phase compensator for coupling an electromagnetic wave into an optical condenser
An apparatus comprising a phase compensator and an optical condenser in communication with the phase compensator. The phase compensator provides for phase shifting a portion of an electromagnetic...
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7773215 |
Digital spectrophotometer and spectrological method
A digital spectrophotometer and a spectrologial method for determining spectrum wavelength of an unknown illuminant, and the digital spectrophotometer has a base, an operating assembly and a...
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7746467 |
Frictional pivots for gravitational alignment
A frictional pivot 100 for use in a device measuring gravitational alignment is provided. The frictional pivot 100 comprises a gravity-responsive directional means 200 for indicating a datum...
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7684023 |
Apparatus and method for generating THz wave by heterodyning optical and electrical waves
An apparatus and method for generating a terahertz (THz) wave are provided. The apparatus comprises: an fiber optic probe injecting an optical wave transmitted through an optical fiber into a...
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7663761 |
Beam analyzing system and method for analyzing pulsed particle or laser beams
The present invention relates to a beam analyzing system and a method for analyzing pulsed particle or laser beams. The inventive beam analyzing system comprises a detector unit, a unit for...
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7551267 |
Systems and methods for measuring ultra-short light pulses
Systems and methods for measuring a pulse length (τ0) of an ultra-short light pulse (P0) based on processing a number of substantially similar light pulses. The system includes an autocorrelation ...
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7421212 |
Detecting and locating pulses using a Bragg cell
Detecting a pulse of a signal includes receiving the signal and a light beam. The signal drives a spatial light modulator to modulate the light beam, where the complex amplitude of the modulated...
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7027148 |
Method and apparatus for determining the triacetin content in filter plugs
Apparatus and method for determining the triacetin content in cigarette filter plugs during the manufacture of the filter plugs from a filter tow. The apparatus including a filter tow storage...
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6775583 |
Method and apparatus for user guidance in optical inspection and measurement of thin films and substrates, and software therefore
A method, apparatus, and software for guiding users during optical inspection and measurement of coated and noncoated substrates with an optical measurement system is provided. The optical...
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6686997 |
Apparatus and a method for pulse detection and characterization
An optical/analog/digital pulse detector receives an input signal and drives a Bragg cell illuminated by a collimated light beam. The Bragg cell spatially modulates the collimated light beam and...
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6667801 |
Method and apparatus for safety testing optical systems for hazardous locations
A method of determining the ignition characteristics of an optical source emitting optical power into a hazardous environment includes providing a chamber and a tapered optical fiber having an...
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6516551 |
Optical sight with switchable reticle
An optical sight for a photocamera viewfinder or for an aiming device of a firearm comprises a combination of a light emitting diode (LED) with a plurality of reticle patterns applied onto the...
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6397165 |
Microscopic corner radius measurement system
A measurement tool connects to a microscope for identifying and measuring microscopic dimensions of features on a photographic mask such as area, diameter and corner radius. Dimensions of features...
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6299122 |
Spherically mounted retroreflector edge adapter
In accordance with the present invention, there is provided an edge adapter for use with a spherically mounted retroreflector device for measuring the location of a measurement point on a first...
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6215399 |
Passive infrared motion detector and method
Zones of a passive infrared (PIR) motion detector lens are staggered at close range to provide for pet immunity. In a dual sensor, dual lens configuration, the sensor signal is acted on to generate...
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6163375 |
Devices for taking motion pictures from an aircraft
A device for taking aerial motion pictures, includes a camera (3) disposed at the upper end of a vertical periscopic tube (2) whose lower end (1) projects below a carrying airplane. An optical...
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5953117 |
Visual prominence meter
Method for a visual measurement, in which an image sector of an image with a target object is presented to an eye of an operative by a display unit, and in which the fovea of the eye is placed into...
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5933082 |
Passive alarm system for blind and visually impaired individuals
The device assists those who are visually handicapped and, in particular, warns blind or visually impaired travellers that they have entered a potentially dangerous area proximal to the edge of...
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5869209 |
Hologram recording apparatus and method
A hologram recording plate, which has a plastic layer (a rosin derivative) that undergoes frost deformation by being acted upon by a solvent vapor, is set in a developing box supplied with a...
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5798833 |
Rotation speed measuring machine for flying globe
A rotation speed measuring machine for a flying globe is formed of a light projecting device 10 projecting light on a measurement conducting area A which is a space including an expected flying...
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5732046 |
Active fiber-optic opto-acoustic detector
An opto-acoustic detector includes a fiber laser having a cavity which includes an optical fiber having an active medium portion doped with a gain material so that the detector may be used in high...
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5729341 |
Method and apparatus for testing materials for use in a laser resonator
A method and apparatus for testing materials for use in a laser resonator includes selecting a test fixture apparatus having a housing with an internal chamber volume selected to approximate the...
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5587051 |
Simplified laser apparatus and method for measuring stock thickness on papermaking machines
An apparatus and method for monitoring the de-watering performance of a forming section of a papermaking machine is disclosed which includes a laser instrument having a laser displacement meter...
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5568007 |
Lamp unit and optical analyzer using the same
A lamp unit is provided with a projecting portion on the inner wall of the lamphouse in the vicinity of the arc portion. The lamphouse is ventilated by the van provided at one end of the lamphouse...
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5508808 |
Development sensor apparatus for monitoring the progression of development of an optical disk master
A development sensor apparatus includes an optical system, a 0th-order light detection unit, a 1st-order light detection unit, a diffracted light ratio calculating unit, and an ellipsoidal mirror....
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5492601 |
Laser apparatus and method for monitoring the de-watering of stock on papermaking machines
An apparatus and method for measuring the de-watering performance of a forming section of a papermaking machine is disclosed which includes a laser instrument assembly having first and second laser...
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5353262 |
Optical transducer and method of use
An optical transducer, such as used in an ultrasound system, includes a signal laser which generates an optical signal the frequency of which varies in correspondence with acoustic energy incident...
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5319975 |
Fiber optic moisture sensor
This invention provides for a fiber optic moisture sensor. The sensor is comprised of a housing and a support positioned within the housing. The support is coated with a film. A first and second...
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5213647 |
Arrangement for holding together a package of boards for printed circuits
An arrangement for holding together a package of boards to be used in the manufacture of printed circuits by applying glue to an edge of the package or by applying glue into holes formed in the...
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5052804 |
Non-imaging optical detector with variable field-view
A non-imaging optical telescope having a variable field-of-view utilizes an atomic resonance filter within its non-reflective tube. The atomic resonance filter received incoming light through the...
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5028132 |
Examination of surface structure
A technique for examining surface structures which differ in respect of refractive index and/or height modulation of the surface comprises introducing these surface structures into a plasmon...
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5007717 |
Real time analyzer for pulsed laser systems
A technique for the simultaneous measurement, in real time, of the changes in mode size, pulse length, and power of a wavetrain of laser pulses delivered by mode-locked or other pulsed laser...
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4866660 |
Optoelectraulic devices based on interference induced carrier modulation
A subpicosecond solid state optical correlator based on interference induced carrier modulation includes a photosensor circuit having a photoconductive element and a pair of opposed electrodes. A...
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4864342 |
Optical bench
The optical bench includes two rodlike members having the same cross-sectional shape. The members are connected foldably on opposite ends by a device having a spring leaf. The optical bench is...
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4852055 |
Forming lines in computer aided pattern generating systems
Lines of various slopes and positions are generated simply in a computer aided manual drafting system. Such lines may be drawn with a modified puck manually movable over a surface to control the...
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4796996 |
Laser temperature modulation and detection method
Periodically modulating the temperature of a semiconductor laser while maintaining constant optical power permits very precise measurements of the operating parameters of the laser.
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4791518 |
Device for detecting interfering arcs
An electrical system preferably constructed as gas-insulated, metal-encapsulated switching system containing at least one electrical switch located in a darkened internal space is monitored by a...
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4765736 |
Frequency modulation spectroscopy using dual frequency modulation and detection
FM laser spectroscopy apparatus includes a single modulator for modulating a laser beam with first and second modulation signals (ω1, ω2). The two modulation signals are generated by mixing a s...
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4711118 |
Detection of water entrapped in electronic components
The accuracy of measurements made to determine the extent of water vapor trapped upon encapsulation of an electronic device is significantly enhanced by carefully controlling the measurement...
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4684258 |
Method and apparatus for enhancing laser absorption sensitivity
A simple optomechanical method and apparatus is described for substantially reducing the amplitude of unwanted multiple-interference fringes which often limit the sensitivities of tunable laser...
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4673809 |
Optoelectronic scanning arrangement wherein optical reflective markings form curvilinear arcs
The invention relates to an optoelectronic scanning arrangement for scanning optical markings. The optical markings consist of a reflecting mark RM and a non-reflecting mark NM which is inclined by...
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4461571 |
Test system for wave guide arc detector circuits
A system for testing a wave guide arc detecting circuit for a microwave system is disclosed. Testing is accomplished by utilizing a pulsed laser source to generate pulses of optical energy which...
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