Matches 101 - 150 out of 217 < 1 2 3 4 5 >
Match Document Document Title
6282012 Method for damping ribbon elements in a micromechanical grating device by selection of actuation waveform  
A method for damping electro-mechanical ribbon elements over a channel defining a bottom surface and having a bottom conductive layer formed below the bottom surface includes the steps of:...
6252697 Mechanical grating device  
A mechanical grating device for diffracting an incident light beam has a base which defines a surface. A spacer layer is provided above the base, said spacer layer defining an upper surface of said...
6218194 Analytical methods and apparatus employing an optical sensor device with refractive index modulation  
A method for monitoring the interaction of molecular species utilizes a sensor device comprising a substrate (1) with a waveguide (2) formed on the surface thereof. A grating (3) is formed in one...
6215579 Method and apparatus for modulating an incident light beam for forming a two-dimensional image  
An apparatus and method for modulating an incident light beam for forming a two-dimensional projection image. The apparatus includes a plurality of elongated elements each having a reflective...
6192177 Electrically modifiable optical grating devices  
In accordance with the invention, an electrically modifiable optical fiber grating device is made by providing a fiber including a grating and forming a plurality of electrically conductive...
6181458 Mechanical grating device with optical coating and method of making mechanical grating device with optical coating  
A mechanical grating device for enhancing the reflective properties is presented. A mechanical grating has a plurality of parallel ribbon elements which are suspended above a channel. An incident...
6172811 Optical grating and a method of fabricating an optical grating  
An optical grating includes a sequence of grating lines, the sequence being such that each grating line is centered on a position which is an integer multiple of a line spacing distance from a...
6172792 Method and apparatus for forming optical gratings  
An apparatus for redirecting physical energy includes a substrate defining a first boundary of a region, a first electrode defining a second boundary of the region, the second boundary disposed...
6147741 Digital scanner employing recorded phase information and method of fabrication  
A digital scanner composed of a plurality of individually addressable scanning elements. Each of the plurality of individually addressable scanning elements capable of operating in discrete states...
6144481 Method and system for actuating electro-mechanical ribbon elements in accordance to a data stream  
A method is disclosed for actuating electromechanical ribbon elements which are suspended over a channel. The channel defines a bottom surface having a bottom conductive layer formed below said...
6141139 Method of making a bistable micromagnetic light modulator  
A method of fabricating a modulator for modulating an incident beam of light includes a substrate having a cavity formed therein and a plurality of spaced-apart deformable elements formed in the...
6130770 Electron gun activated grating light valve  
A grating light valve is configured to either reflect or diffract an incident beam of light from a light source. Each grating light valve includes a plurality of deformable reflective ribbon...
6108117 Method of making magnetically driven light modulators  
A method of making a modulator for modulating an incident beam of light uses a substantially planar light reflection surface formed by a light reflection layer associated with a plurality of...
6094448 Grating assembly with bi-directional bandwidth control  
A bidirectional bandwidth controlled grating assembly. A spring housing is connected to one of two end plates extending away from the lined surface of the grating. An adjustment rod threaded...
6088148 Micromagnetic light modulator  
A modulator for modulating an incident beam of light uses a substantially planar light reflection surface formed by a light reflection layer associated with a plurality of deformable elements and a...
6072620 Output efficiency control device, projection-type display apparatus, infrared sensor, and non-contact thermometer  
Microlenses 3a and 3b are formed on a first surface of a transparent substrate, and an output efficiency control device 2 which modulates a light amount of incident light is provided on a second...
6038057 Method and system for actuating electro-mechanical ribbon elements in accordance to a data stream  
A method is disclosed for actuating electro-mechanical ribbon elements which are suspended over a channel. The channel defines a bottom surface and having a bottom conductive layer formed below...
6031809 Aperture-limiting element and optical head utilizing the same  
The optical head has a light source, a collimating lens, an aperture-limiting element and an objective lens in the mentioned order in the direction of progress of light emitted from the light...
6014257 Light modulator  
A modulator (10) for modulating an incident beam of light includes a substrate (14) having a cavity (32) formed therein and a plurality of spaced-apart deformable elements (12) formed in the cavity...
6002522 Optical functional element comprising photonic crystal  
An optical functional element including two diffraction gratings having metal films formed on their surfaces, which are arranged to oppose each other to form a photonic band, and an optical...
5999319 Reconfigurable compound diffraction grating  
A reconfigurable compound diffraction grating is fabricated using microelectomechanical systems (MEMS) technology. The compound grating structure can be viewed as the superposition of two...
5991476 Pump directed optical switching element  
An optical switch includes a pump source, a pump director, and a pump-dependent attenuator. The pump-dependent attenuator passes optical signals when it is supplied with pump energy at a pumping...
5991079 Method of making a light modulator  
A method of making a light modulator (10) for modulating an incident beam of light includes a substrate (14) having a cavity (32)formed therein and a plurality of spaced-apart deformable elements...
5969864 Variable surface relief kinoform optical element  
A kinoform optical element (KOE) has different surface relief heights in different zones of the kinoform surface, in order to optimize the first order diffraction efficiency in each zone. By...
5933277 Imaging system combining visible and non-visible electromagnetic radiation for enhanced vision  
An imaging system provides a visible image of a scene enhanced by information from electromagnetic radiation from the scene at a non-visible wavelength without parallax-induced errors. First...
5930044 Deflecting element having a switchable liquid crystalline material  
A deflecting element (1) includes a first substrate (3) and a second substrate (5). The two substrates (3) and (5) enclose a liquid crystalline material (7) which is switchable. A surface (13) of...
5815307 Aperiodic quasi-phasematching gratings for chirp adjustments and frequency conversion of ultra-short pulses  
An apparatus and method for simultaneous chirp adjustment and frequency conversion of an ultra-short input optical pulse A 1 characterized by a center angular frequency ω 1 ,0 in a non-linear...
5815222 Apparatus for deflecting light, device for scanning light, device for reading information and device for stereoscopic display  
An apparatus for deflecting light of the present invention comprises: (a) at least one pair of transference electrodes arranged facing one another; (b) a drive circuit which applies a voltage among...
5807622 Curved surfaces formed by etching and thermal processing  
A smooth contoured structure is formed from a planar surface by etching mesas of equal height into the surface and heat treating the structure to mass transport material above the desired contour...
5794023 Apparatus utilizing a variably diffractive radiation element  
Apparatus suitable for transforming a radiation beam so that it can exit with a predetermined alteration. The apparatus includes a first variably diffractive radiation element for transforming a...
5781670 Optical frequency channel selection filter with electronically-controlled grating structures  
Optical energy transfer devices and energy guiding devices use an electric field to control energy propagation using a class of poled structures in solid material in channel dropping filter and...
5757536 Electrically-programmable diffraction grating  
An electrically-programmable diffraction grating. The programmable grating includes a substrate having a plurality of electrodes formed thereon and a moveable grating element above each of the...
5748814 Method for spatially controlling the period and amplitude of Bragg filters  
A method for spatially controlling the period and amplitude of Bragg filters in an optical medium having a longitudinal axis that is sensitive to at least some wavelength of electromagnetic...
5666224 Optical grating and method of fabricating an optical grating  
An optical grating includes a sequence of grating lines, the sequence being such that each grating line is centered on a position which is an integer multiple of a line spacing distance from a...
5650835 Reconfigurable optical beam splitter and method  
A reconfigurable optical beam splitter and method establishes replicated periods of optical phase shift regions across a liquid crystal cell to form an optical grating in the liquid crystal. A...
5629802 Spatially multiplexed optical signal processor  
A spatial light modulator has a plurality of pairs of input and reference images recorded upon a plurality of sub-areas thereof. Each sub-area is illuminated with an associated point source of...
5625729 Optoelectronic device for coupling between an external optical wave and a local optical wave for optical modulators and detectors  
An optoelectronic device for coupling between an external optical wave and a local optical wave. The local wave is supported by a multiplicity of electrodes and a structure associated with the...
5581642 Optical frequency channel selection filter with electronically-controlled grating structures  
Optical energy transfer devices and energy guiding devices use an electric field to control energy propagation using a class of poled structures in solid material in a channel dropping filter and...
5555130 Holographic scanning  
A holographic grating element is provided which enables tracing different scan lines. The element is divided into a plurality of sectors. A first grating pattern is provided which diffracts a beam...
5502707 Diffraction grating and optical pickup apparatus with diffracting grating  
An optical pickup apparatus in which light from a light source is led to an information medium and reflected light from the information medium is led to a hologram to be incident as a +1st order...
5496616 Optical element for correcting non-uniform diffraction efficiency in a binary diffractive optical element  
A first binary diffractive optical element has a multi-level surface relief phase grating structure on a substrate. The first binary diffractive optical element can be divided into regions...
5494783 Method of correcting non-uniform diffraction efficiency in a binary diffractive optical element  
A first binary diffractive optical element has a multi-level surface relief phase grating structure on a substrate. The first binary diffractive optical element can be divided into regions...
5477383 Optical array method and apparatus  
A method and apparatus for splitting, scanning and receiving a beam of light is disclosed. Binary optic array components are used to split, in an angular manner, an input beam into multiple beams,...
5475670 Deflection plate for optical pick-up device  
A deflection plate for deflecting laser beams includes a transparent plate on which two grating areas are formed on the same surface. The first grating area has a plurality of parallel grooves. The...
5469520 Compression-tuned fiber grating  
A reflective element 26, such as a Bragg grating, impressed in an optical fiber 24, has a reflection wavelength which is tuned by compressing the grating 26. Because an optical fiber is a much...
5465176 Method of embossing repeating patterns on a substrate, the patterns having different rates of repetition  
In a preferred embodiment, a method of producing embossed first and second elongate, edgewise side by side, repeating, optical patterns on a sheet for use in producing secure identification means,...
5434708 Optical reproducing apparatus ultilizing a polarization beam splitter  
Optical reproducing apparatus utilizes a dual diffraction grating having first and second diffraction gratings with the diffraction gratings oriented at an angle with respect to one another to...
5428479 Diffraction grating and method of manufacture  
A diffraction grating providing an optically variable image includes a pixellated diffraction grating in which each pixel is an individual optical diffraction grating so that the pixellated...
5420948 Chirped optical fibre filter  
A chirped distributed Bragg grating optical fibre filter comprises an adiabatically tapered single mode optical fibre provided on the taper with a distributed Bragg grating of uniform pitch.
5408281 Multifocal contact lens  
A multifocal ophthalmic lens has a spiral-like pattern on its surface in an area overlying the cornea of a wearer of the lens. The spiral-like pattern is capable of providing a plurality of...
Matches 101 - 150 out of 217 < 1 2 3 4 5 >