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7423801 Lens with SLM  
Apparatus for enhancing vision of a user includes a focal modulation device ( 22 ), which is adapted to focus light from objects in a field of view of the user onto the retina while alternating...
7403677 Fiberoptic reconfigurable devices with beam shaping for low-voltage operation  
An apparatus and method to operate on a light beam by using a lens that collimates the light beam to a collimated beam with at least one cross-sectional dimension less than a critical dimension of...
7365907 Rear projection image display apparatus  
A compact rear projection image display apparatus in which the projection distance in a projection optical system is substantially reduced and no reflection mirror is used, thereby eliminating a...
7352941 Method and apparatus for electromagnetic resonance and amplification using negative index material  
An electromagnetic resonance device includes an input reflector, an output reflector, and a negative index material (NIM) disposed between the input reflector and the output reflector. The input...
7312917 Variable focal length electro-optic lens  
A variable focal length lens includes a plurality of layers of an electro-optic material and alternating stacked substantially transparent conductor layers and substantially transparent resistor...
7289260 Multifocal lens  
Apparatus for enhancing vision of a user includes a focal modulation device ( 22 ), which is adapted to focus light from objects in a field of view of the user onto the retina while alternating...
7244030 Rear projection type image display device  
The present invention relates to a rear projection type image display device comprising projection lenses ( 2, 3 ) for projecting an image displayed on an image display element onto a transmission...
7195358 ***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Rear projection type image display device  
The present invention relates to a rear projection type image display device comprising projection lenses ( 2, 3 ) for projecting an image displayed on an image display element onto a transmission...
7164521 Aberration compensating device and optical head device  
An aberration compensating device for compensating aberration of a laser beam emitted from a light source and converged on an optical recording disk through an objective lens includes a liquid...
7027369 Optical pickup apparatus for simultaneously reading data from a plurality of tracks of an optical disc  
An optical pickup apparatus ( 10 ) for reading data from a plurality of tracks of an optical disc ( 34 ) at the same time by focussing spots (M, . . . ) of each light beam on a plurality of tracks,...
7009757 Optimal elements (such as vari focal lens component, vari-focal diffractive optical element and variable declination prism) and electronic image pickup unit using optical elements  
Optical elements such as a vari-focal lens element, a vari-focal diffractive optical element and a variable declination prism usable as spectacle lens elements and so on.
6934075 Multilayer single lens structure with zooming and focusing functions  
The present invention discloses a multilayer single lens structure with zooming and focusing functions, particularly a lens structure that makes use of the special properties of crystalline grains...
6927894 Mirror assemblies incorporating variable index of refraction materials  
A mirror assembly including an active lens and a reflective surface. The mirror assembly may change its refractive index when a voltage is applied to the active lens, thereby changing the field of...
6760493 Coplanar integrated optical waveguide electro-optical modulator  
A coplanar integrated optical waveguide electro-optical modulator comprises a substrate ( 1 ) of an electro-optic material, at least two optical waveguides ( 41, 42 ) integrated in the substrate in...
6636653 Integrated optical micro-electromechanical systems and methods of fabricating and operating the same  
An apparatus and method of fabricating and operating a micro-electromechanical systems (MEMS) integrated optical structure is disclosed. Micro-optics is integrated with MEMS actuators to provide a...
6577434 Variable focal position spatial modulation device  
A variable focus position spatial modulator, which has a satisfactory image forming performance. The modulator includes: a variable refractive index part that is able to deflect an incident light;...
6529307 Selective intensity modulation of channels in a multiplexed optical communication system  
A method and apparatus for achieving dynamic intensity modulation of the channels in a wavelength-division multiplexed optical communication system is presented. Wavelengths are spatially separated...
6469822 Optical phased array device and the method therefor  
An optical irregular phased-array is disclosed. The effective positions of the phase-controlled elements in the phased-array form an irregular array, such that the size of each phase-controlled...
6396622 Electro-optic apparatus and process for multi-frequency variable refraction with minimized dispersion  
The object of the prevent invention is to provide an optical system for producing variable refraction with minimized dispersion. A first material with a first apex angle in a first state and a...
6151154 Optical pickup, aberration correction unit and astigmatism measurement method  
An optical pickup includes: a light source, an object lens, and an aberration correction unit for correcting aberration by giving a phase difference to a light beam. The aberration correction unit...
6144480 Optical arrangement for processing an optical wave  
An optical arrangement comprising a plurality of cells arranged in a two-dimensional array on, into, or partly into an optical medium, each said cell having a pattern structure comprising a number...
5973720 Focusing method, light beam optical system used therefor, and image forming apparatus using same  
A light beam optical system is provided according to the present invention for focusing light beams from a light source on the surface of a photoconductive drum and the like via an optical system....
5751471 Switchable lens and method of making  
A switchable lens includes first and second optically transparent substrates, a first electrically conductive, optically transparent contact film positioned on a surface of the first optically...
5696622 Variable focal position optical system and light beam scanning apparatus  
A variable focal position optical system which includes a variable focal length lens subsystem whose focal length is variable and a fixed focal length lens subsystem whose focal length is fixed....
5610758 Variable focal position optical system and light beam scanning apparatus  
A variable focal position optical system which includes a variable focal length lens subsystem whose focal length is variable and a fixed focal length lens subsystem whose focal length is fixed....
5587826 Optical beam scanning apparatus adjusting focal point over entire image forming area by feedback control  
In an optical beam scanning apparatus having an electrooptic lens, a focal point of a light beam is adjusted to be exactly positioned on a scanning surface by a feedback control at any positions...
5561549 Optical element  
An optical element consists of an LN or LT crystal doped with MgO or ZnO. A +z surface and a -z surface of the crystal are connected to each other by means of a metal jig and an indium sheet. The...
5541761 Optical beam scanning apparatus adjusting focal point over entire image forming area by feedback control  
In an optical beam scanning apparatus having an electrooptic lens, a focal point of a light beam is adjusted to be exactly positioned on a scanning surface by a feedback control at any positions...
5535042 Light scanning device  
Corrective signals for canceling out a dynamic deformation of the reflecting surface of a rotary scanning mirror are applied to X and Z electrodes of an electro-optic lens. Based on the supplied...
5444567 Light control device  
A light control device including an electro-optical material, a light refraction device mounted on the surface of the electro-optical material and electrodes provided on respective front and back...
5272561 Electrooptic device  
An electrooptic device which comprises an electrooptic material disposed on an optical axis of an optical beam. The beam is linearly polarized in advance. The electrooptic material has opposed two...
5212583 Adaptive optics using the electrooptic effect  
An adaptive electroopical lens system for use in optical data storage systems, optical phased arrays, laser or other optical projectors, and raster scanning devices, and the like. The invention...
5144462 Liquid crystal projection color display apparatus having microlens arrays with controllable refractive power  
In a liquid crystal projection color display apparatus having three liquid crystal display devices used for red, green and blue light, each liquid crystal display device has a liquid crystal...
5126875 Semiconductor optical device having a variable refractive index profile  
A semiconductor optical device for focusing an optical beam includes a substrate doped to a first conductivity type, a semiconductor layer doped to a conductivity type different from that of the...
5124835 Optical scanning apparatus  
An optical scanning apparatus for scanning a beam of light from a light source over a target surface by a scanning mechanism to form an image on the target surface. The optical scanning apparatus...
5052791 Variable magnification viewfinder optical system with variable magnification based on polarization  
The variable magnification viewfinder optical system comprises a polarizing element allowing the light incident thereon to emerge as a linearly polarized light, an objective optical system...
5033806 Optical scanner  
An optical scanner has a light source device for emitting an approximately parallel light beam polarized approximately linearly; a deflector for deflecting the light beam from this light source...
5020885 Optical element  
An optical element comprising: an electro-optic medium through which a linearly polarized light beam passes; at least one pair of electrodes disposed on the electro-optic medium in such a way that...
4872743 Varifocal optical element  
An optical element whose focal length is variable comprises a medium whose refractive index is variable by temperature, a heating device for imparting heat to the medium to cause an index gradient...
4848881 Variable lens and birefringence compensator  
Apparatus and method are disclosed for providing a variable lens and birefringence compensator (10) adapted to be used within the resonator cavity of a repetitively pulsed, variable rate, solid...
4793696 Method and apparatus for rapid focus control in an optical data storage device  
There is provided a method of moving the position of the focal point of an optical system in an optical data storage device. A membrane reflector having an electrically controllable surface contour...
4783152 Variable focal length lens  
There is disclosed a variable focal length lens comprising: an optical element showing substantially different refraction characteristics depending on polarization characteristics of an incident...
4758070 Variable focal length lens  
A variable focal length lens has a lens system having optical anisotropy, a polarization plane control device for changing the direction of polarization of a light beam on the lens system. A...
4729617 Scanning clock generating device for optical scanner  
A scanning clock generating device for an optical scanner which scans a selected surface by a light beam to write optical information or read image information. The scanner scans the surface by a...
4576441 Variable fresnel lens device  
A ferroelectric focussing and defocussing device for operation at millimeter wavelengths applicable for use as a component in radar systems. Electrodes direct fields reversibly and continuously...
4283122 Light-beam streaking employing crystal with traveling lens and multiple cross-crystal reflections  
Apparatus for streaking a beam of light employing a crystal in which an electromagnetic wave pulse induces a synthesized traveling lens. Surfaces on opposite sides of the crystal act as light...
4124273 Variable vergency focussing apparatus  
The invention relates to variable vergency focussing systems which enable the focussing of a light beam on an object to be maintained despite movements of the object. The invention consists in...
4030813 Control element having liquid layer attainable to geometrically uneven state in response to electrical signal  
A device comprising a support member of a solid material, a liquid material in intimate contact with and supported by the support member and an electrical means for creating an electric field...
3970364 Depletion layer laser beam modulator and deflector  
Method and apparatus for deflecting and modulating a beam of coherent radiation wherein an electric potential is applied across the electrodes of an MOS semiconductor device to vary the thickness...
3892469 Electro-optical variable focal length lens using optical ring polarizer  
There is disclosed an electrically controlled, variable focal length lens made of crystalline material possessing 3m symmetry in an electric field which is particularly adapted to affect the...
Matches 1 - 50 out of 65 1 2 >