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9029782 Method and apparatus for graphene-based chemical detection  
A chemical sensor is provided. The sensor includes at least one lightguiding element having an optical core. The lightguiding element comprises a layer of graphene situated in sufficient proximity...
8878119 Optical inspection method and optical inspection apparatus  
In the conventional contaminant particle/defect inspection method, if the illuminance of the illumination beam is held at not more than a predetermined upper limit value not to give thermal damage...
8848271 Apparatus and method for high-speed phase shifting for interferometric measurement systems  
Described are a method and apparatus for high-speed phase shifting of an optical beam. A transparent plate having regions of different optical thickness is illuminated by an optical beam along a...
8717202 Force sensitive input devices and methods  
Illustrative embodiments of force sensitive input devices and methods are disclosed. In at least one embodiment, a force sensitive input device may comprise a button movable along a first axis...
8699111 Apparatus and method for high-speed phase shifting for interferometric measurement systems  
Described are a method and apparatus for high-speed phase shifting of an optical beam. A transparent plate having regions of different optical thickness is illuminated by an optical beam along a...
8581175 Device for converting light into an electrical signal  
A device for converting light transmitted by an optical transmission element into an electrical signal. Light is decoupled from a coiled or helically bent fiber and coupled into distributed over...
8565127 Voice-activity detection based on far-end and near-end statistics  
Methods and apparatus of managing a communication system, wherein a decision regarding a level of activity at a first end is made based at least in part on the level of activity at the second end....
8362413 Contact detection device  
A contact detection device includes a number of first bars and second bars. Each first bar includes a number of first sheets. Each second bar includes a number of second sheets. The first bars and...
8354632 Optoelectronic transmission system with optical fibers for transmitting signals from two different directions  
An optoelectronic transmission system includes a light guide module, an optical signal source, an optical fiber, and a light detector. The light guide module includes a light guide body, and a...
8125426 Image displaying apparatus and image displaying method  
In an image displaying apparatus, first and second detecting units detect quantities of light propagating through a light path at two different locations. A variation calculating unit calculates...
8124926 Key device and electronic device comprising the same  
The key device of the present invention is provided with: first light-emitting portions that emit light propagating in a first direction; second light-emitting portions that emit the light R...
8093817 Method and system for lighting control  
A method and a system for controlling at least one lighting arrangement (2), in which the lighting arrangement modulates the light (6, 16, 18) it emits by lighting arrangement data, which contains...
8067724 All-optical integrated photonic clock having a delay line for providing gate signal to a gate waveguide  
An all-optical integrated photonic clock, systems employing the same, and methods of making and using the same. Illustrative examples are provided based on silicon semiconductor technology that...
7961327 Optical pH sensor  
A method to sense pH of a fluid and an optical pH sensor. The method includes the steps of supplying at least a portion of an optical source through an input fiber. The optical source is passed...
7830560 System and method for adaptive digital ramp current control  
An adaptive digital ramp current control system comprises a digital current ramp controller configured to digitally ramp a current level supplied to at least one light emitting diode (LED)...
7812304 Light guide having light scattering patterns with different light reflected directions  
A rod-shaped light guide which does not cause unevenness in color at the portion near an incident face is produced by injection-molding transparent resin such as acryl and its surfaces include a...
7807958 Switch for an illumination device, and projection system including the same  
An illumination device and a projection system including the same are disclosed. The illumination device can implement a small-sized and high-efficiency projection system, and the projection...
7768687 Photoelastic modulator  
A photoelastic modulator, comprising a driving block and a driver transducer for perturbing said block in a predefined direction to establish a standing wave extending longitudinally in said block...
7710271 Method and system for lighting control  
A method and a system control at least one lighting arrangement, in which the lighting arrangement modulates the light it emits by lighting arrangement data that contains an identification code...
7705287 Broadband light source unit that produces a supercontinuum lightwave, and optical analyzer  
A broadband light source unit that produces a supercontinuum lightwave having a flat spectral form and has a light source that outputs a first source lightwave, which is a pulse lightwave having...
7655900 Intensity modulation type optical sensor and optical current/voltage sensor  
An influence on a sensor output is suppressed to a minimum degree even in the case when there is a ripple in a light source, thereby improving the measurement accuracy. In an intensity modulation...
7601946 Electromagnetic sensor incorporating quantum confinement structures  
A multispectral optical sensor incorporating quantum confinement devices is composed of a solid-state tunable filter, an optional lens, and a photodetector or plurality of photodetectors. The...
7557935 Optical coordinate input device comprising few elements  
The present invention is an optical electronic input device for identifying the coordinates of an object in a given area. The device may capture two-dimensional or three-dimensional input...
7528362 Pulse modulating photodetector and electronic device  
The invention provides a pulse modulation photodetector, which detects, by projecting pulsed light, presence or absence of a physical object based on whether the pulsed light is received or not...
7525670 Distance and orientation measurement of an object  
A method for measuring a distance between an object (256) and a light source (230) and sensing an object orientation includes applying light from a plurality of sources (230, 240 or 810) on the...
7453058 Optical bumps for low-loss interconnection between a device and its supported substrate and related methods  
The present invention is directed to an apparatus and related methods related to an optical bump for optically coupling devices. An exemplary apparatus includes a first device, a second device,...
7196320 Fiber optic encoder for position sensing  
A passive all fiber optic encoder that will be able to determine speed, position, and direction of movement of a movable object. The all passive encoder utilizes no electronics within the sensing...
7170606 Multi-way LED-based surface reflectance sensor and spectrophotometer  
A light sensor circuit based on direct connection of LEDs to I/O pins of a microcontroller. The LEDs are reverse biased and the parasitic junction capacitance is charged in an output mode. Then,...
7084616 Method and device for measuring an electrical voltage  
A method and device for measuring electrical voltage allow measurement under open-air conditions including high-voltage and very high voltage. Influence of temperature changes on electrical and...
7036379 Fluid diffusion resistant glass-encased optical sensor  
A fluid diffusion resistant tube-encased fiber grating pressure sensor includes an optical fiber 10 having a Bragg grating 12 impressed therein which is encased within a sensing element, such as a...
7015458 High density fiber optic output interface and system  
A fiber optic control system for controlling remotely located devices. The control system includes an illumination source for producing a light beam and a plurality of optical fibers. Each fiber...
6984819 Optical converting type ultrasonic receiving apparatus  
An ultrasonic receiving apparatus is equipped with such a condition capable of obtaining superior sensitivities. This ultrasonic receiving apparatus includes: an ultrasonic detecting element for...
6921894 Fiber optic micro accelerometer  
An accelerometer includes a wafer, a proof mass integrated into the wafer, at least one spring member connected to the proof mass, and an optical fiber. A Fabry-Perot cavity is formed by a...
6899849 Integrated sensor  
An integrated optical chip device for molecular diagnostics comprising a tunable laser cavity sensor chip using heterodyned detection at the juncture of a sensor laser and a reference laser, and...
6766072 Optical threshold and comparison devices and methods  
An optical device for providing threshold and comparison functions. The device comprises first and second SOA's having respective first and second propagation paths along which the first and...
6750967 Light scattering measuring probe  
The constitution of a probe for measuring light scattering according to this invention is as follows: a light input optical fiber 4 and a scattered light measuring optical fiber 6 for collecting...
6748128 Device for changing the length of the running path of an electromagnetic wave  
The device serves for changing the length of a running path of an electromagnetic wave. It comprises a wave guide which is wound onto a core. The core is formed in two parts, wherein the distance...
6744036 Optically coupled sensor for application to combustible liquids  
An optically coupled circuit is electrically coupleable to a capacitive probe transducer disposed in a liquid in a tank for sensing the capacitance of the probe transducer which is a measure of a...
6738173 Limiting amplifier modulator driver  
Apparatus for driving an optical system modulator to modulate data signals onto a light wave of the optical system. The modulator driver apparatus has a limited amplifier for receiving multiplexed...
6730920 Abbe arm calibration system for use in lithographic apparatus  
In a lithographic apparatus, a reference grating 11 mounted on the wafer table WT is illuminated with a measurement beam 20 incident in a direction independent of wafer table tilt. The diffraction...
6724786 Variable optical attenuator using wavelength locked loop tuning  
A system and method for automatically attenuating optical signals transmitted in optical systems. The system and method exploits a wavelength-locked loop servo-control circuit and methodology that...
6680472 Device for measuring of optical wavelengths  
Fibre optic apparatus for accurate and repeatable measurements of light comprising one or more wavelength ranges, and system employing the apparatus. The apparatus according to the invention...
6559999 System for modulating radiation using two rotating discs  
The present invention is directed to a system for modulating thermal infrared radiation for a pyroelectric imaging sensor or similar sensor by providing two discs rotating at the same speed, both...
6556149 Switches and joysticks using a non-electrical deformable pressure sensor  
Switches and joysticks comprise user-moveable two position and multi position switches, including simple on/off and variable switches such as dimmers. The switches operate on the principle of...
6545259 Optical wavelength monitor for a passive optical component  
An optical wavelength monitor provided with an optical coupler for coupling at least a part of the optical signals transmitted in an optical waveguide, which signals are transmitted by means of...
6411909 Device for measuring the fluid consumption of a user over a given time  
The invention relates to a device for measuring the fluid consumption of a user over a given measurement time, including a volumetric meter (26) connected to a central information processing unit...
6376831 Neural network system for estimating conditions on submerged surfaces of seawater vessels  
An algorithm method of predicting estimated sea energy, wave directions and other seastate data with respect to submerged sea-going vessels, based on inputs derived from signal processed...
6307666 Voltage sensing systems and methods for passive compensation of temperature related intrinsic phase shift  
A small sized electro-optic voltage sensor capable of accurate measurement of high levels of voltages without contact with a conductor or voltage source is provided. When placed in the presence of...
6262415 Orientation sensor system with high precision optical interrogation and dense multiplexing  
An apparatus and method for measuring the orientation of a platform by receiving and reading signals from one or more orientation sensors, such as a magnetic compass, using optical interrogation,...
6246048 Methods and apparatus for mechanically enhancing the sensitivity of longitudinally loaded fiber optic sensors  
An optical fiber is provided with a Bragg grating formed along a portion of its core and a mechanical structure arranged adjacent to the Bragg grating for amplifying longitudinal strain on the...

Matches 1 - 50 out of 375 1 2 3 4 5 6 7 8 >