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7420737 Reconfigurable zone plate lens  
A reconfigurable zone plate lens is disclosed. Some embodiments may include a central annular element having a first a first circumference centered about a central axis. Embodiments may also...
7361878 Image display apparatus and image pickup apparatus with two dimensional scanning  
An image forming apparatus with a light source unit emitting a light beam optically modulated based on image/video information, a scanning unit for scanning the light beam emitted from the light...
7348104 System and method for fabrication and replication of diffractive optical elements for maskless lithography  
A method is disclosed for forming an array of focusing elements for use in a lithography system. The method involves varying an exposure characteristic over an area to create a focusing element...
7339738 Nanomechanical near-field grating apparatus and acceleration sensor formed therefrom  
A nanomechanical near-field grating device is disclosed which includes two sub-gratings vertically spaced by a distance less than or equal to an operating wavelength. Each sub-grating includes a...
7327508 Display device using light modulator and having improved numerical aperture of after-edge lens system  
A display device using a light modulator and having an improved numerical aperture (NA) of an after-edge lens system is disclosed. The display device includes an illumination lens, a diffractive...
7324282 Apparatus, system and method for applying optical gradient forces  
The present invention relates to a system of applying optical gradient forces to form a plurality of optical traps to manipulate small particles. The system includes a light source for generating a...
7319553 Optical modulator module package structure  
Disclosed herein is an optical modulator module package structure. In the optical modulator module package structure, an optical modulator device and a drive integrated circuit device are flip-chip...
7317575 Tunable dispersive optical system  
A novel dispersion optical system based on at least one grating is provided. The pitches of the grating are linearly modulated so that the incident light is dispersed into different monochromatic...
7289258 Light modulator having variable blaze diffraction grating  
The present invention relates, in general, to a light modulator having a variable blaze diffraction grating and, more particularly, to a light modulator having a variable blaze diffraction grating,...
7286292 Configurable diffractive optical element  
This invention relates to a configurable diffractive optical element comprising an array of diffractive sub-elements having a reflective surface, wherein each sub-element has a controllable...
RE39865 Method of fabricating Bragg gratings using a silica glass phase grating mask and mask used by same  
An index grating is imprinted in the core of an optical fiber using a specially designed silica glass phase grating mask. The phase mask is held in close proximity to the optical fiber. Laser...
7277640 Optical add/drop multiplexing systems  
The present invention overcomes problems associated with switch isolation, noise and crosstalk suppression, insertion loss, spurious reflections, wavelength tolerance, and compactness that are...
7248408 Color display apparatus using one panel diffractive-type optical modulator  
Disclosed herein is a color display apparatus using a one-panel diffractive-type optical modulator. The color display apparatus includes a plurality of light sources, an illumination lens system, a...
7245407 Complex objective lens compatible with information media of different thicknesses  
A complex objective lens composed of a hologram and an objective lens, capable of realizing stable and high-precision compatible reproducing/recording of a BD with a base thickness of about 0.1 mm...
7215461 MEMS devices with increased damping for suspended movable structures  
In one embodiment, a light modulator includes a substrate and a number of modulator elements disposed above and spaced apart from the substrate. Each modulator element has an optically active...
7192175 Backlighting light pipe for illuminating a flat-panel display  
A light pipe includes a surface provided with a pattern that has diffractive properties, where the pattern has uniform, mutually different areas on the surface such that some of the areas are...
7190521 Space-variant subwavelength dielectric grating and applications thereof  
An optical device includes a planar subwavelength grating ( 10 ) formed in a dielectric material and having a laterally varying, continuous grating vector. When used to modulate a beam of laterally...
7177081 High contrast grating light valve type device  
A grating light valve has with a plurality of spaced reflective ribbons are spatially arranged over a substrate with reflective surfaces. The grating light valve is configured to optimized the...
7173764 Apparatus comprising a tunable nanomechanical near-field grating and method for controlling far-field emission  
A tunable nanomechanical near-field grating is disclosed which is capable of varying the intensity of a diffraction mode of an optical output signal. The tunable nanomechanical near-field grating...
7149016 Optical element and scanning optical system having the same and image forming apparatus  
An optical element that can reduce Fresnel (surface) reflection on a lens surface to be a cause of flare or ghost, and a scanning optical system having the same are provided. A microstructure...
7145722 Optical filter and method of manufacturing thereof  
Novel structure of the optical elements (i.e. filter) to be operated in the long, mid, and near infrared wavelengths of lights is provided. The filter can offer very narrow linewidth, and high...
7136227 Fresnel zone plate based on elastic materials  
A dynamically variable, amplitude grating based diffractive optic including: a substantially transmissive, elastic substrate; a substantially opaque, elastic material formed in a predetermined...
7126686 Spectral image measurement apparatus and method using the same  
A spectral image measurement apparatus comprises: a spectral element array; a spectral element drive section for driving the elements; an inlet-side optical system for guiding a light to the...
7123415 Optical instrument and optical element providing expanded exit pupil  
The invention provides an optical instrument including means ( 1, 2 ) to produce an optical image to be viewed by an observer including a diffractive element ( 7 ) located at an intermediate focal...
7114820 Backlighting light pipe for illuminating a flat-panel display  
The invention relates to a new light pipe ( 313 ) for providing backlighting ( 312 ) of a flat-panel display ( 311 ) by means of at least one light source so that the light pipe has at least one...
7110180 Diffraction grating, method of fabricating diffraction optical element, optical pickup device, and optical disk drive  
A diffraction grating with periodically arranged protrusions and grooves at a relatively narrow pitch and improved diffraction efficiency is disclosed. The protrusions of the grating are made of a...
7102803 Apparatus and method of using a thermal design for wavelength division multiplexed holographic filters  
A temperature compensated apparatus for filtering light is comprised of a holographically recorded grating defined in a photosensitive layer for providing optical filtration for light incident on...
7099086 Wavelength division multiplexing system and method using reconfigurable diffraction grating  
An improvement in a wavelength division multiplexer and/or a dense wavelength division multiplexer (WDM/DWDM) is achieved by incorporating an electronically reconfigurable diffraction grating...
7085062 Apparatus for shaping a light beam  
The invention relates to an apparatus for shaping a light beam, having at least two optically functional boundary surfaces that are arranged one behind another in the propagation direction (z) of...
7075615 Light separation device, blazed grating device, diffraction grating device, and illumination optical system  
A thin and light optical device satisfactorily separates light components having different properties. A blazed grating is formed on a surface of a flat-plate-shaped transparent substrate, and a...
7072114 Optical pickup using an optical phase plate and which is compatible with optical recording media of different types  
An optical pickup apparatus having laser light sources emit a first light beam having a relatively shorter wavelength for a DVD and a second light beam having a longer wavelength for a CD-R, an...
7057819 High contrast tilting ribbon blazed grating  
The light modulator includes elongated elements and a support structure coupled to the elongated elements. Each element includes one or more lengthwise slits within an active optical area, and a...
7042625 Light modulator having digital micro blaze diffraction grating  
Disclosed is a light modulator having a digital micro blaze diffraction grating. In the light modulator, a fine protrusion is formed on an edge of a lower surface of a diffraction member so that a...
7042611 Pre-deflected bias ribbons  
A modulator for and a method of modulating an incident beam of light including means for supporting a plurality of active elements and a plurality of bias elements, each active and bias element...
7027202 Silicon substrate as a light modulator sacrificial layer  
An optical MEM device is fabricated with a patterned device layer formed on a silicon wafer. Preferably, the patterned device layer is patterned with plurality of ribbons and/or access trenches....
7019883 Dynamic optical filter having a spatial light modulator  
An dynamic optical filter 10 is provided to selectively attenuate or filter a wavelength band(s) of light (i.e., optical channel(s)) or a group(s) of wavelength bands of an optical WDM input...
7002746 Security element comprising macrostructures  
A security element for sticking onto a document comprises a layer composite of plastic material and has embedded, optically effective structures of a pattern . The optically effective structures in...
6987616 Light reflection/diffraction device, light reflection/diffraction device array, and image display  
A light reflection and diffraction element for enhancing the contrast of an image display device. In an off state of the element, a portion exhibiting a cyclic structure for diffracting incident...
6985294 Full spectrum color projector  
An apparatus providing full spectrum electronic images includes a full-spectrum light source, a programmable diffraction grating to separate light from the source into its spectral components, a...
6985293 Optical pickup using an optical phase plate and which is compatible with optical media for different types  
An optical pickup apparatus having laser light sources emit a first light beam having a relatively shorter wavelength for a DVD and a second light beam having a longer wavelength for a CD-R, an...
6975459 Micro-actuated adaptive diffractive composites  
A volume diffractive composite is disclosed for providing illumination at a first output angle. The volume diffractive composite comprises a first plurality of grating elements that are mutually...
6972906 Space-variant subwavelength polarization grating and applications thereof  
An optical device includes a plurality of metallic stripes, arranged in a substantially planar, subwavelength grating having a laterally varying, continuous grating vector, deposited on a substrate...
6972886 Variable blazed grating  
In one aspect of the invention, an apparatus operable to provide optical signal processing includes an inner conductive layer including an at least substantially conductive material and a plurality...
6963450 Fresnel lens and die for the same  
Provided is a Fresnel lens the manufacture of that is unlikely to be affected by the working errors of the die in the optical axis and its neighborhood. Two lens surfaces 11, 11 that are disposed...
6943925 Optical logic gate based optical router  
A switching element capable of being used in an optical processing device includes an optical signal separator operable to separate a multiple wavelength optical signal into one or more optical...
6922271 Tunable phase grating with optically linearized response  
One embodiment disclosed relates to an apparatus for controlled diffraction of light. The apparatus includes a plurality of vertically movable reflective members and an arrangement of the...
6919983 Microelectromechanical device with continuously variable displacement  
An electrostatic micromechanical device with continuously variable displacement, that includes: a movable member having a first electrode; an opposing surface having a second electrode; a channel...
6909547 Security element with diffraction structures  
A security element ( 2 ) comprising a plastic laminate has a surface pattern ( 12 ) composed mosaic-like from surface elements ( 13; 14; 15 ). Shaped into at least two of the surface elements ( 14;...
6903872 Electrically reconfigurable optical devices  
The invention refers to electrically reconfigurable optical devices based on the use of a layer of dielectric and transparent viscoelastic material (G) opposing at least a first electrode structure...
6900919 Variable blazed grating  
In one aspect of the invention, an apparatus operable to provide optical signal processing includes an inner conductive layer including an at least substantially conductive material and a plurality...
Matches 1 - 50 out of 214 1 2 3 4 5 >