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Class 359/562 - For changing zeroth order intensity


Subclass of Class 359 - Optical: systems and elements
Definition: Subject matter wherein the spatial filter located at the
No. of patents: 63
Last issue date: 07/05/2011


1    
NumberTitleIssue Date
7974010Zero-order diffractive pigments
The present invention relates to pigments comprising or consisting of a layer made of a material with an index of refraction that is higher than the index of refraction of the adjacent material by at least 0.25; whereas said layer has a zero-order diffractive micro-...
07/05/2011
7355953Optical pickup for cutting off optical noise and optical recording and/or reproducing apparatus using the same
An optical pickup includes a light source which emits light, a grating which separates a portion of the light emitted from the light source, a reflecting member which reflects another portion of the light emitted from the light source, a monitoring photodetector dis...
04/08/2008
7339669Device for the analysis of the qualitative composition of gases
A device for the analysis of the qualitative, optionally also the quantitative composition of gases, uses measuring light of known spectral composition that can pass through the gas to be analyzed and the gas can be caused to interact. A detector arrangement is pres...
03/04/2008
7319553Optical 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 bonded to a substrate, and an opening of the substrate is blocked us...
01/15/2008
7292259Recording system for light-sensitive sheet
The invention provides a system for recording a datum onto a pixel on a light-sensitive sheet. The system essentially includes a light-emitting device and an interfering device. The interfering device has a plurality of gratings. According to the datum, at least one...
11/06/2007
7280457Optical disc with an improved compound lens
The present invention relates to an optical pickup and a disc drive for preventing aberrations of laser light due to variations in temperature and humidity to ensure satisfactory characteristics of the laser light. A compound lens (14) is disposed in the opti...
10/09/2007
7181047Methods and apparatus for identifying and localizing an area of relative movement in a scene
A method and apparatus for localizing an area in relative movement and for determining the speed and direction thereof in real time is disclosed. Each pixel of an image is smoothed using its own time constant. A binary value corresponding to the existence of a signi...
02/20/2007
7136842Method and device for adapting a signal for the detection of the movement of an object
Systems and methods for adjusting a signal used for the detection of the movement of an object in a space represented by a set of data Aij, associated with pixels forming a multidimensional space i, j, evolving with time, and represented at a succession o...
11/14/2006
7098041Methods to view and analyze the results from diffraction-based diagnostics
An analyzer useful in determining the presence of an analyte using a diffraction based sensing device and methods and systems using this device. The present invention may be used with a variety of different diffraction-based diagnostic methods and systems. The analy...
08/29/2006
7043465Method and device for perception of an object by its shape, its size and/or its orientation
Systems and methods for localizing a shape in a space represented by pixel data forming a multidimensional space i, j, evolving with time, and represented at a succession of instants T, wherein the data is associated with a temporal parameter A, B, . . . in the form...
05/09/2006
7039257Scanning optical apparatus and image forming apparatus using the same
At least one beam emitted from a light source is deflected by a deflector, and the beam deflected by the deflector is imaged on a surface to be scanned by imaging optical system having a diffracting surface on at least one surface thereof. Of diffracted lights diffr...
05/02/2006
6999165Method and apparatus for radiation analysis and encoder
Method and apparatus for analyzing radiation using analyzers and encoders employing the spatial modulation of radiation dispersed by wavelength or imaged along a line. ...
02/14/2006
6967710Projection exposure apparatus and method
An exposure apparatus and method to expose an object with an illumination beam irradiated on a mask from a light source disposes an optical unit between the light source and an optical integrator of an illumination optical system to illuminate the mask with an illum...
11/22/2005
6959293Method and device for automatic visual perception
A visual perception processor comprises histogram calculation units, which receive the data DATA(A), DATA(B), . . . DATA(E) via a single data bus and supplying classification information to a single time coincidences bus. In a preferred embodiment the histogram calc...
10/25/2005
6954308Apparatus and methods for generating multiple exit-pupil images in an expanded exit pupil
A diffraction grating generates even-order, odd-order, and 0th-order exit-pupil images. The even-order exit-pupil images have brightness levels within a first range and the odd-order exit-pupil images have brightness levels within a second range that is d...
10/11/2005
6944322Optical tomography of small objects using parallel ray illumination and post-specimen optical magnification
A parallel-beam optical tomography system for imaging an object of interest includes a parallel ray beam radiation source that illuminates the object of interest with a plurality of parallel radiation beams. After passing through the object of interest the pattern o...
09/13/2005
6768588Apparatus and methods for generating multiple exit-pupil images in an expanded exit pupil
A display system includes a diffraction grating that generates exit-pupil images, where one of the exit-pupil images has a first intensity and the remaining exit-pupil images each have or approximately have a second intensity that is less than the first intensity. T...
07/27/2004
6762882System and method for use of dark field fourier diaphragm in multi-frequency imaging
An imaging system is disclosed that includes an illumination source, a modulator and a variable Fourier diaphragm. The illumination source produces a first illumination field having a first frequency and a second illumination field having a second frequency. The mod...
07/13/2004
6636293Exposure method and apparatus having a decreased light intensity distribution
A method and apparatus for transferring a fine pattern (12) on a mask (11) onto a substrate (17) by a projection exposure apparatus including an illumination optical system (1-10) for irradiating an illuminating light on the mask (11), and a projection op...
10/21/2003
6552864Beam generation method and system
A method and a system for generating a beam of radiation in a target plane located in a near-filed region of a radiation emitting means. A beam of radiation having a substantially plane wavefront is emitted. A normal Bessel beam, having its transverse pro...
04/22/2003
6507419Illumination system using optical feedback
Disclosed is an illumination system using optical feedback to maintain a predetermined illumination output. The illumination system employs an electrically controllable optical filter for filtering light incident thereon. The illumination system also incl...
01/14/2003
6490088Optical system using a radial harmonic pupil filter for generating collimated beams
A Fourier hologram with the distribution of a radial harmonic function creates, in the far field, a pseudo non-diffracting beam. The properties of this pseudo non-diffracting beam can be set by appropriate characterization of the radial harmonic function....
12/03/2002
6229650Optical imaging head having a multiple writing bean source
A method for transferring an image to a medium includes: generating a substantially uniform line of radiation; producing diffractive light from the uniform line of radiation; passing zero order diffractive light to the medium in a telecentric fashion whil...
05/08/2001
6215578Electronically switchable off-axis illumination blade for stepper illumination system
An off axis illumination stepper exposure system includes an illumination system with an aperture element and lenses. The aperture element comprises an array of electronically switchable pixels in a matrix. The aperture element can be a transmissive spati...
04/10/2001
6151103Method and system for improved optical imaging in microlithography
An improved microlithographic imaging system (100) is disclosed. The system comprises a filter (183) substantially aligned with a first image plane, adjacent to an aperture (185). The filter is formed in response to an image projected by a light source (1...
11/21/2000
6101034Tunable multispectral optical filter and imaging apparatus
Disclosed is a tunable multispectral optical apparatus for forming a spectrally processed image of a scene having finite angular extent or alternatively a point source of light, both of which may include multispectral components. A spatial filter is selec...
08/08/2000
6020988Ultra high resolution wave focusing method and apparatus and systems employing such method and apparatus
An ultra high resolution wave focusing method and apparatus is disclosed. The invention provides a focusing system having an effective numerical aperture greater than that possible using known conventional focusing techniques. By the method and apparatus ...
02/01/2000
5978138Projection exposure systems
A projection method uses a modified illumination method for a lithography process of semiconductor device, and a projection system and mask use the projection method. An object is exposed by removing the vertical incident component of light passed through...
11/02/1999
5978109Superresolution scanning optical device
A superresolution scanning optical device has image forming means for forming the image of light from a coherent light source unit in the form of a fine spot on a conjugate face through an image forming optical system, and scanning means for scanning the ...
11/02/1999
5959776Method and apparatus of Fourier manipulation in an optic lens or mirror train
An optical system is provided with an adaptable window element at a Fourier plane for spatial filtering. Having a window element made up of individually addressable pixels provides a substantial improvement in the spatial filtering adaptability and precis...
09/28/1999
5864430Gaussian beam profile shaping apparatus, method therefor and evaluation thereof
A method and apparatus maps a Gaussian beam into a beam with a uniform irradiance profile by exploiting the Fourier transform properties of lenses. A phase element imparts a design phase onto an input beam and the output optical field from a lens is then ...
01/26/1999
5818988Method of forming a grating in an optical waveguide
A method and apparatus for writing a Bragg grating in a photosensitive optical waveguide is disclosed. The novel method comprises an interferometer having precisely adjustable light collecting and directing components. A phase mask illuminated with ultrav...
10/06/1998
5808796Projection method and projection system and mask therefor
A projection method uses a modified illumination method for a lithography process of semiconductor device, and a projection system and mask use the projection method. An object is exposed by removing the vertical incident component of light passed through...
09/15/1998
5768017Optical system for producing uniform line illumination
A system for creating a bright and uniform line of illumination. The "hot spot" of an arc lamp is imaged onto a narrow, circular pinhole aperture. Light passing through the pinhole aperture is collimated and passed through a second aperture (the apodizing...
06/16/1998
5742422Adjustable fourier mask
A Fourier mask includes a base plate, an aperture plate having a pair of cross hairs fixedly mounded on the base plate and a pair of four bar linkages, each four bar linkage being made up of a pair of parallel cross bars and a pair of parallel mask bars p...
04/21/1998
5717674Three-beam generating diffraction grating, transmission type holographic optical element and optical pickup apparatus using the same
An optical pickup apparatus includes a semiconductor laser generating a light having a short wavelength for reproduction of a high-density information recording medium and a semiconductor laser outputting a light for reproduction of an information recordi...
02/10/1998
5712729Artificial retina cell, artificial retina and artificial visual apparatus
An artificial retina cell effectively used to recognize a plurality of objects from an image containing them with ease and at high speed. Also disclosed are an artificial retina and an artificial visual apparatus employing the same. The artificial visual ...
01/27/1998
5661601Projection method and projection system and mask therefor
A projection method uses a modified illumination method for a lithography process of semiconductor device, and a projection system and mask use the projection method. An object is exposed by removing the vertical incident component of light passed through...
08/26/1997
5638211Method and apparatus for increasing the resolution power of projection lithography exposure system
A method and apparatus for transferring a fine pattern (12) on a mask (11) onto a substrate (17) by a projection exposure apparatus including an illumination optical system (1-10) for irradiating an illuminating light on the mask (11), and a projection op...
06/10/1997
5631773Image projection method and semiconductor device manufacturing method using the same
An edge emphasis type phase shift reticle is illuminated obliquely, and zeroth order diffraction light and first order diffraction light caused by a fine pattern of the reticle and having substantially the same intensity are incident and distributed on a ...
05/20/1997
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