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| Number | Title | Issue Date |
| 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 relatively high power wavelength conversion mode exceeds the power densit... | 01/10/2012 |
| 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 direction of alignment with gravity; frictional pivoti... | 11/29/2011 |
| 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 direction which is less than approximately one wavelength of the radiation ... | 12/28/2010 |
| 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 bulk sample of particles is then excited to produce an atomic emissio... | 12/14/2010 |
| 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 wave. The optical condenser is shaped to direct the electromagnetic wa... | 11/23/2010 |
| 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 photographic assembly. The operating assembly is attached to the base and h... | 08/10/2010 |
| 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 direction of alignment with gravity; frictional pivoti... | 06/29/2010 |
| 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 light beam is proportional to the signal current. The modulated light b... | 09/02/2008 |
| 7366244 | Method and system for antenna interference cancellation A wireless communication system can comprise two or more antennas that interfere with one another via free space coupling, surface wave crosstalk, dielectric leakage, or other interference effect. The interference effect can produce an interference signal on one of ... | 04/29/2008 |
| 7327302 | Equivalent time asynchronous sampling arrangement An asynchronous sampling arrangement utilizes sampling of both a high speed data signal and a trigger (clock) signal. The data signal may be either an optical signal or an electrical signal. The data and trigger signals are sampled in parallel by two separate gates,... | 02/05/2008 |
| 7291072 | Performance measurement system with fluorescent markers for golf equipment The present invention is directed to a monitor system that measures flight characteristics of at least one object moving in a predetermined field-of-view using at least one fluorescent marker. The system may include a lighting unit with a light filter, at least one ... | 11/06/2007 |
| 7187700 | Method for maintaining wavelength-locking of Fabry-Perot laser regardless of change of external temperature and WDM light source using the method Disclosed is a method for maintaining wavelength-locking of a Fabry-Perot laser regardless of a change of external temperature even though a temperature controller is not used, and a wavelength division multiplexing (WDM) light source using the method, as an economi... | 03/06/2007 |
| 7161967 | Method for checking the regulation state of a frequency-stabilized laser system and frequency-stabilized laser system The invention relates to a method for checking the regulation state of a frequency-stabilised laser system comprising a laser (2). At least one first sidebrand frequency VHF is modulated to the laser beam (1) of said laser, the laser beam being guided ... | 01/09/2007 |
| 7123676 | Method and system for antenna interference cancellation A wireless communication system can comprise two or more antennas that interfere with one another via free space coupling, surface wave crosstalk, dielectric leakage, or other interference effect. The interference effect can produce an interference signal on one of ... | 10/17/2006 |
| 7086955 | Method and apparatus to determine golf ball trajectory and flight A launch monitor system including a support structure, a first light-reflecting element disposed on this support structure, a lighting unit and an camera unit. A computer receives signals generated by light patterns received by the camera unit and computes a variety... | 08/08/2006 |
| 7050388 | Method and system for crosstalk cancellation Signals propagating in one communication channel can generate crosstalk interference in another communication channel. A crosstalk cancellation device can process the signals causing the crosstalk interference and generate a crosstalk cancellation signal that can co... | 05/23/2006 |
| 7042557 | Sample supplying device for a dry particle-size distribution measuring apparatus and method A dry particle-size distribution measuring apparatus and method is provided for suspending a plurality of bristle members across a support surface of a dispensing trough with bristles being arranged to contact and disperse any clusters of particles to a primary stat... | 05/09/2006 |
| 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 container, a filter tow stretching device, a device for feeding triacetin,... | 04/11/2006 |
| 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 measurement system incorporates an integrated recipe and data browser with so... | 08/10/2004 |
| 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 upon exiting the Bragg cell is imaged by lenses of an optics... | 02/03/2004 |
| 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 input end and an output end, wherein the output end has a smal... | 12/23/2003 |
| 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 surface of the LED and selectively illuminated by connecting v... | 02/11/2003 |
| 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 having sizes of less than about twice the wavelength being... | 05/28/2002 |
| 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 object surface of an object. The object has a second object s... | 10/09/2001 |
| 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 an alarm only when the sensor signal is simultaneous, ind... | 04/10/2001 |
| 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 device is provided, adapted to effect vertical sweeping by piv... | 12/19/2000 |
| 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 such a reference position relative to the display unit, o... | 09/14/1999 |
| 5951837 | Composition and method for manufacturing ion selective electrode sensors This invention pertains to fluorophoric compositions of a 7-amino-coumarin derivative and methods of their use for enhancing visualization of various constituents of ion selective electrodes.... | 09/14/1999 |
| 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 boarding platforms of the type typically found in public rail... | 08/03/1999 |
| 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 solvent vapor (cyclohexane) from a solvent vapor reservoir. The ... | 02/09/1999 |
| 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 route of a flying globe B after the globe has been hit at a h... | 08/25/1998 |
| 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 frequency, high density arrays. The cavity is bounded by a... | 03/24/1998 |
| 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 internal volume of a predetermined laser resonator and havin... | 03/17/1998 |
| 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 laterally spaced and supported above an upper run of a paper ... | 12/24/1996 |
| 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 and the vent provided at the other end. The inner diameter... | 10/22/1996 |
| 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. The optical system radiates a laser beam to a predetermine... | 04/16/1996 |
| 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 displacement meters laterally spaced and supported above ... | 02/20/1996 |
| 5446537 | Method of sorting semiconductor lasers It is an object to provide a method of sorting semiconductor lasers, capable of appropriately removing semiconductor lasers which can cause a so-called sudden death in use. After a first current within a range of 50 to 150% the maximum rated current is su... | 08/29/1995 |
| 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 on the transducer. An optical cavity in the signal laser i... | 10/04/1994 |
| 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 light guides are positioned within the housing and communica... | 06/14/1994 |
