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7643869 |
Apparatus for non-invasive cancerous tissue diagnosis and tomography using terahertz imaging
The primary objective of the present method and apparatus is to provide a portable and new diagnosis system for quickly and reliably examining tissue conditions. The method uses the most advance...
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7636290 |
Optical element, optical objective element, and optical pickup apparatus having diffractive structure and optical difference giving structure
An optical element comprises: a diffractive structure having a plurality of diffracting ring-shaped zones arranged around an optical axis on at least one optical surface; and an optical path...
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7633680 |
Diffraction grating device and optical apparatus
A diffraction grating device for splitting or coupling light beams permits the divergence of the light beams to be minimized easily. A first light beam is incident on a diffraction grating from the...
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7633462 |
Diffraction grating and laser television using the same
A diffraction grating including a substrate, and a grating member formed on the substrate, the grating member having a stepped structure including steps, the number of which corresponds to an odd...
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7630133 |
Inorganic, dielectric, grid polarizer and non-zero order diffraction grating
An inorganic, dielectric grid polarizer includes an optical stack with a diffraction grating and an inorganic, dielectric grid polarizer. The inorganic, dielectric grid polarizer includes a stack...
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7623291 |
Polarized diffractive filter and layered polarized diffractive filter
A polarized diffractive filter contains cyclic concave/convex portions formed as a diffractive grating on a transparent substrate. The concave portions are filled with an optical material. At least...
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7619819 |
Method and apparatus for drug product tracking using encoded optical identification elements
A method and apparatus for drug product tracking (or other pharmaceutical, health care or cosmetics products, and/or the packages or containers they are supplied with) using diffraction...
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7619820 |
Dot matrix holograms with spatially varying period
A diffractive unit which can reduce the effect of the nonlinearity of the photo-resist recording material to produce a diffractive device with brilliant color, and describes a method for recording....
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7612940 |
Diffractive optical element and method of fabricating diffractive optical element
The present invention is a diffractive optical element 1 in which mutually different materials make contact with one another via the same diffraction grating groove 30 . One of the mutually...
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7605859 |
Image pickup device and image pickup optical system that optically reduce color flares
An optical system enables images of a wide range of natural subjects to be well reproduced with their colors, and provides an image pickup system including, at least, an image pickup optical...
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7602827 |
Semiconductor laser and manufacturing process therefor
There is provided a semiconductor laser comprising an n-InP substrate 1 ; a multilayer film including a strained MQW active layer 6 on the n-InP substrate 1;
a p-electrode 18 on the...
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7602437 |
Image pickup device and image pickup optical system
An optical system is presented that enables images of a wide range of natural subjects to be well reproduced with their colors, and provides an image pickup system including, at least, an image...
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7599106 |
Optical mask and MOPA laser apparatus including the same
The present invention relates to an optical mask at low cost and so on having a structure capable of reducing further a peak of beam intensity caused by diffraction. The optical mask is constructed...
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7585546 |
Surface passivation and sealing of micro-optics devices for improved performance in harsh environments
Methods and structures for reducing and/or eliminating moisture penetration in an optical package. The optical package may include (1) a layer of inorganic material placed over the points of the...
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7580187 |
Diffractive optical element and optical low-pass filter utilizing the same
The invention provides a diffractive optical element that can be used as a light beam splitter device, an optical low-pass filter or the like having a two-dimensionally multi-valued fine periodic...
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7576926 |
Spill light removing device
A spill light removing device includes a first blocker which is located perpendicularly to a stream route of light being irradiated from a light source and blocks a stream of light that is incident...
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7573019 |
Light detecting apparatus, illumination optical apparatus, exposure apparatus and exposure method
A light detecting apparatus which can be arranged even in an optical path of which converting angle is relatively large, and can accurately detect light entering along a predetermined direction in...
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7567288 |
Image pickup device and image pickup optical system
An optical system is presented that enables images of a wide range of natural subjects to be well reproduced with their colors, and provides an image pickup system including, at least, an image...
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7557990 |
Method and apparatus for a Bragg grating tunable filter
The present invention relates to tunable filters. More specifically, the present invention pertains to a method and apparatus that allows tuning of a wavelength over a large optical band. The...
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7554733 |
Diffractive optical element and method for manufacturing same
A diffractive optical element includes at least a first diffractive element and a second diffractive element. The conditional expression 0.5≦D/DS≦0.9 is preferably satisfied where DS denotes...
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7554734 |
Polarization independent grating
A grating has a high diffraction efficiency into the minus first diffracted order in transmission, for both TE and TM polarizations. The incident angle may optionally be chosen so that the minus...
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7538946 |
Metamaterials
One exemplary metamaterial is formed from a plurality of individual unit cells, at least a portion of which have a different permeability than others. The plurality of individual unit cells are...
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7538945 |
Optical path changing module
An optical module can achieve an optical system using a transmission-type diffraction grating for bending the optical path of incident light with a specific wavelength by about 90°. A substrate of...
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7531790 |
Image sensor and method for fabricating the same
An image sensor includes at least one photoelectric conversion area on a semiconductor substrate, a color filter over the photoelectric conversion area, and an apochromatic microlens over the color...
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7530701 |
Photographic flashlight
A light diffusion arrangement, for a photographic device having a flashlight, includes a diffuser housing, a plurality of diffracting mesh members, and a plurality of light diffusing elements. The...
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7515340 |
Three-dimensional display device
A three-dimensional display device including a display panel and a modulatable electrowetting grating is provided. The display panel has a plurality of pixels. The modulatable electrowetting...
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7511887 |
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...
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7499612 |
Multimode planar waveguide spectral filter
A spectral filter comprises a planar optical waveguide having at least one set of diffractive elements. The waveguide confines in one transverse dimension an optical signal propagating in two other...
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7483604 |
Diffractive grating element for balancing diffraction efficiency
A diffractive grating element is divided into at least two different grating regions each having different diffractive properties and arranged on opposite sides with respect to a transition point...
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7483188 |
Security device
A security device comprises a holographic or diffractive optically variable effect generating structure which, when viewed normally i.e. perpendicularly to the plane of the device, replays at least...
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7468942 |
Optical pickup, optical element, and information reproducing apparatus configured for use with any of plural types of recording media
An optical pickup has a light source for emitting a plurality of laser beams with different wavelengths; and an objective lens for focusing the laser beams emitted from the light source on...
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7460302 |
Dynamic optical devices
The invention provides an optical device, including a light-transmissive substrate, and a pair of different, parallel gratings including a first grating and a second grating, located on the...
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7452820 |
Radiation-resistant zone plates and method of manufacturing thereof
Disclosed are radiation-resistant zone plates for use in laser-produced plasma (LPP) devices, and methods of manufacturing such zone plates. In one aspect, a method of manufacturing a zone plate...
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7446954 |
Hybrid lens system
A hybrid lens system includes: a first lens with positive diffractive power, a second lens with negative diffractive power, a third lens with positive diffractive power, and a fourth lens with...
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7443587 |
DOE-based systems and devices for producing laser beams having modified beam characteristics
Novel methods are disclosed for designing and constructing miniature optical systems and devices employing light diffractive optical elements (DOEs) for modifying the size and shape of laser beams...
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7440153 |
Backlight unit for flat panel display and flat panel display apparatus having the same
A backlight unit for a flat panel display and a flat panel display apparatus having the same. The backlight unit for a flat panel display includes a light source emitting light, a light guide panel...
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7440188 |
Diffractive optical element
A conventional diffractive optical element (DOE), which consists of repetition of a unit pattern , has an advantage of applicability of the Fast Fourier Transform algorithm to calculate...
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7436561 |
Hologram laser unit and optical pickup apparatus
A laser light beam of a first wavelength which is polarized in a first polarizing direction, emitted from first and second semiconductor laser elements and reflected by an information recording...
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7435979 |
Optical device and method of manufacture
The present invention provides for a method of producing an optical device by means of electron beam lithography and including the step of varying the characteristics of the electron beam spot...
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7433290 |
Complex objective lens, optical head, optical information apparatus, computer, optical disk player, car navigation system, optical disk recorder, and optical disk server
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...
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7433135 |
Image pick-up lens system
A image pick-up lens system includes: a first lens with positive diffractive power, a second lens with negative diffractive power, a third lens with positive diffractive power, and a fourth lens...
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7433125 |
Light quantity distribution control element and optical apparatus using the same
A light quantity distribution control element includes a substrate of 20 mm×20 mm×3 mm made of a material that transmits light, such as optical glass or acryl, and a antireflective structure...
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7430076 |
Diffraction element
A diffraction element having concave/convex-like diffraction gratings in its two surfaces from which at least two separated light beams can be taken in the same direction without changing largely...
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7422842 |
Reduced loss high efficiency diffractive and associated methods
A sub-wavelength anti-reflective diffractive structure is incorporated with a base diffractive structure having a small period to form a high efficiency diffractive structure. In the high...
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7420736 |
Method for determining optimum grating parameters for producing a diffraction grating for a VUV spectrometer
A method for determining a set of grating parameters for producing a diffraction grating for a vacuum-ultraviolet spectrometer, the parameters used being the small and large radius of the toroidal...
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7420735 |
Transmission type diffraction grating
A transmission diffraction optical element is presented in which ridges having a roughly rectangular cross-section shape are disposed parallel to each other at a regular pitch at the surface of a...
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7420734 |
Planar waveguide grating devices having controlled polarization dependent sensitivity and method of manufacturing thereof
Diffraction gratings are formed from grooves each having a reflective facet and a non-reflective facet. The net reflection of TE (Transverse Electric) and TM (Transverse Magnetic) polarizations...
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7420733 |
Electrically switchable polymer-dispersed liquid crystal materials including switchable optical couplers and reconfigurable optical interconnects
A new photopolymerizable material allows single-step, fast recording of volume holograms with properties that can be electrically controlled. Polymer-dispersed liquid crystals (PDLCs) in accordance...
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7405883 |
Optical component and method of manufacture of optical component
An optical component or optical low-pass filter has two or more regions demarcated by differences in refractive indexes, in which a region having a refractive index different from the refractive...
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7388696 |
Diffuser, wavefront source, wavefront sensor and projection exposure apparatus
A wavefront source having a wavefront formation structure ( 4 a ) and a diffuser with a scattering structure ( 2 b ) in the beam path in front of or at the level of the wavefront formation...
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