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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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.... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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)... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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,... |
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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... |
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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,... |
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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... |
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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... |
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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... |
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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... |
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6954580 |
Optical receiver with high dynamic range
An optical coupling assembly having an optical receiver that exhibits extended dynamic range, and, more particularly, an optical receiver that is integrated with a Variable Optical Attenuator... |
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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... |
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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... |
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6877378 |
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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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6626043 |
Fluid diffusion resistant glass-encased fiber optic 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... |
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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... |
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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... |
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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... |
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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... |
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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... |