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| Number | Title | Issue Date |
| 7796246 | 3-D shape measuring method for auto-grinding equipment of LCD color filter and 3-D shape measuring apparatus for the same Provided are a three-dimensional image measuring method and apparatus for an LCD color filter automatic grinder. It is possible to measure a three-dimensional image of an LCD color filter, even though textures for recovering the three-dimensional image are insuffici... | 09/14/2010 |
| 7656512 | Method for determining lithographic focus and exposure A method for determining one or more process parameter settings of a photolithographic system is disclosed. ... | 02/02/2010 |
| 7414713 | Method of measuring focal point, instrument used therefor, and method of fabricating semiconductor device A shape value of a pattern having a pivotal characteristic is measured (step S1), an exposure energy variation is detected from the measured value, a first data base is accessed using a result of the measurement of the shape value (Step S2), an exposur... | 08/19/2008 |
| 7400388 | Method for determining distortion and/or image surface A method for determining at least one of distortion and de-focus for an optical imaging system. The method includes determining wavefront aberrations in a pupil plane of the optical imaging system by a wavefront measurement method, determining focus offset measured ... | 07/15/2008 |
| 7382447 | Method for determining lithographic focus and exposure A method for determining one or more process parameter settings of a photolithographic system is disclosed. ... | 06/03/2008 |
| 7379171 | Optical object distance simulation device An optical object distance simulation device is disclosed. The device has an optical lens module composed of a plurality of optical lens and the optical lens module is arranged between an optical lens and a chart for simulating the real object distance and reducing ... | 05/27/2008 |
| 7352453 | Method for process optimization and control by comparison between 2 or more measured scatterometry signals A method for determining one or more process parameter settings of a photolithographic system is disclosed. ... | 04/01/2008 |
| 7349078 | Characterization of lenses In accordance with one embodiment of the present invention, a method of characterizing a lens is provided. According to the method, an optical source such as a laser is configured to generate a collimated beam that is focused along an optical axis at a distance f | 03/25/2008 |
| 7303331 | Temperature measuring system A temperature measuring system, comprising an imaging device for focusing radiation towards a radiation detector, wherein the imaging device is a diffractive optical device. ... | 12/04/2007 |
| 7292324 | Spherical aberration detection The invention relates to an optical device in which a spherical aberration is detected. The optical device comprises means (206, 208) for focussing a first radiation beam (203) having a first numerical aperture and a second radiation beam (204) ... | 11/06/2007 |
| 7248347 | Focus processing with the distance of different target wheels An apparatus and method for automatically focusing a miniature digital camera module (MUT) is described. A MUT is loaded onto a test fixture and aligned with an optics system of a test handler. Focus targets contained within two target wheels are positioned over an ... | 07/24/2007 |
| 7245362 | Lens meter A lens meter excellent in operability during alignment capable of informing in which direction a subject lens should be moved. A lens meter has a measurement optical system having an optical axis, a light source projecting a light bundle onto the lens, and a photo-s... | 07/17/2007 |
| 7230693 | Lens meter A lens meter for measuring optical characteristics of a subject lens to be measured includes at least three light sources for measurement, a projecting lens which projects measurement light bundles from the light sources onto the subject lens placed on a projecting-... | 06/12/2007 |
| 7154111 | Cornea characteristics measuring device An apparatus for measuring characteristics of a substance is provided. The apparatus includes a light source to generate light to form an image. A splitter transmits the light from the light source to a first lens, which collimates the light. A second lens receives ... | 12/26/2006 |
| 7151595 | Focus error detecting device and optical pickup device having the same A focus error detecting device for an optical pickup having an aberration correcting lens group includes a diffraction optical element having an outer diameter which is smaller than a diameter of the light beam after aberration correction, and selectively diffractin... | 12/19/2006 |
| 7150529 | Hybrid contact lens system and method A hybrid hard-soft contact lens is provided. Several embodiments of the invention include methods of coupling the hard and soft sections of the contact lens. Other embodiments of the invention include contact lens materials and coatings that increase oxygen transmis... | 12/19/2006 |
| 7142293 | Optical system for automatic lens meter An optical system for an automatic lens meter for measuring the refractive power of a lens to be examined. The optical system includes a light source for generating a measuring light beam, a convex collimator lens, disposed a predetermined focal distance from the li... | 11/28/2006 |
| 7106428 | Focal length measuring device A focal length measuring device comprises a light source unit for generating a collimated light, a diffraction grating for deflecting the collimated light by a deflection angle θ, and an image-pickup element for measuring a position of a focused spot light after th... | 09/12/2006 |
| 7072032 | Automatic tracking apparatus for reflector The present invention comprises an illumination portion (11), a light receiving portion (12), disposed in the surveying machine body (8), having an image sensor (27) for receiving a reflection light image (MO) of the measurement light, ar... | 07/04/2006 |
| 7050161 | Global radius of curvature estimation and control system for segmented mirrors An apparatus controls positions of plural mirror segments in a segmented mirror with an edge sensor system and a controller. Current mirror segment edge sensor measurements and edge sensor reference measurements are compared with calculated edge sensor bias measurem... | 05/23/2006 |
| 6975387 | Wavefront aberration measuring instrument, wavefront aberration measuring method, exposure apparatus, and method for manufacturing micro device Before measuring a wavefront aberration of a projection optical system, an image formation position of an image of a pattern of a test reticle which is formed on a predetermined surface is detected by an AF sensor. Based on a result of this detection, the position o... | 12/13/2005 |
| 6963399 | Method and apparatus for quantifying an “integrated index” of a material medium An apparatus for and method of calculating an integrated index of a transparent, translucent or opaque material for a desired wavelength range, the method comprising measuring a filtered value of the material as a function of wavelength within the desired wavelength... | 11/08/2005 |
| 6937327 | Apparatus and method of measuring optical properties of diffractive optical element A laser beam emitted from a laser source is split by a beam-splitting means such as a beam sampler, and the power Q of the split beam is measured by a first detector. In addition, the power q1 of light that has passed through a pinhole while a DOE is not ... | 08/30/2005 |
| 6937328 | Method for measuring refractive power and apparatus therefor A refractive power measuring method is disclosed wherein a pattern plate 8 is disposed at a certain position in a measuring optical path in a measuring optical system 1, a measuring light emitted from a measuring light source 5 is received by a ... | 08/30/2005 |
| 6927376 | Autofocusing method for telescopes pertaining to surveying equipment The invention relates to an autofocusing method, particularly for telescopes for surveying instruments which are fitted with image sensors that resolve the image signal into individual image elements (pixels), such as CCD lines and/or matrices as well as CMOS image ... | 08/09/2005 |
| 6897948 | Variable-wavelength light source apparatus An optical coupler 13, a reflection attenuation amount measurement photodetector 14, and an APC photodetector 15 are provided in a variable-wavelength light source apparatus 1 and the reflection attenuation amount can be measured simply b... | 05/24/2005 |
| 6839132 | Aberration measuring method of projection optical system There is disclosed aberration measuring method of a projection optical system comprising collectively irradiating the finite region of the photomask in which a diffraction grating is formed with the illuminating light emitted from secondary light source having point... | 01/04/2005 |
| 6819413 | Method and system for sensing and analyzing a wavefront of an optically transmissive system An enhanced dynamic range wavefront sensing system includes a light source disposed on a first side of an optically transmissive device, a wavefront sensor disposed on a second side of an optically transmissive device, a relay imaging system disposed between the opt... | 11/16/2004 |
| 6798501 | Cup attaching apparatus In a cup attaching apparatus, a cup is attached as a processing jig to a subject lens along a reference axis, the lens and an index plate having an index of a predetermined pattern are illuminated by substantially parallel rays of light shaped into a diameter larger... | 09/28/2004 |
| 6778265 | Copy feature for recordable DVD editing A method for copying a recorded series of bits from a first location to a second location on a rewritable disc media. The method includes the steps of selectively marking a beginning point and an end point of a segment of the recorded series of bits, and a location ... | 08/17/2004 |
| 6760096 | Lens-evaluating method and lens-evaluating apparatus A method for evaluating the quality of a lens comprising illuminating imaging light on a screen through the lens to form a projected image, where the imaging light having a test-pattern image is generated using a test sheet on which a test pattern for measuring a re... | 07/06/2004 |
| 6563947 | Application specified integrated circuit for use in wavefront detection A device for detecting a wavefront that is defined by a plurality of contiguous light beams includes an array of lenslets for isolating the individual light beams and focusing each individual light beam to a focal point in an x-y plane. The device also ha... | 05/13/2003 |
| 6552782 | Apparatus and method for generation of optical signals A laser system is disclosed wherein a tunable laser signal has encoded within it information related to its wavelength at any instant in time. This encoding in one example is performed by modulating the signal to contain its wavelength information. This i... | 04/22/2003 |
| 6486942 | Method and system for measurement of a characteristic of lens A method and system are provided for measuring a characteristic of a lens. By directing light to a lens, and receiving reflected light from a opposite end faces of the lens on an image plane, a determination from the focused spots on the image plane can b... | 11/26/2002 |
| 6480267 | Wavefront sensor, and lens meter and active optical reflecting telescope using the same A wavefront sensor includes a plurality of lenses disposed in the same plane, and an area sensor that receives a bundle of rays of light collected through each of the lenses as a luminous point. Each of the lenses comprises a plurality of concentric areas... | 11/12/2002 |
| 6437857 | Variable field angle and test pattern spatial frequency system for testing a lens A variable field angle and test patern spatial frequency optical assemblage for testing a lens having a plurality of field angles employs an improved modulation transfer function (MTF) design system for evaluating image quality produced by the lens being ... | 08/20/2002 |
| 6421119 | In Vitro evaluation of animal or human lens characteristics An improved apparatus and method for evaluation of focal length and transparency of vertebrate eye lenses is provided. Preferably with the aid of an alignment camera, a lens horizontally mounted in a transparent container is positioned with the axis of th... | 07/16/2002 |
| 6346981 | Lens testing device A lens testing device comprises a holder, fitted on a stand, for mounting a lens specimen, a test object illuminated from the rear, an imaging objective and a detector for evaluating the image of the test object. The imaging objective can be combined with... | 02/12/2002 |
| 6177986 | Method of testing a lens having variable field angles An assemblage and method for testing a lens having a plurality of field angles employs an improved modulation transfer function (MTF) design system for evaluating image quality produced by the lens being tested. A reflecting surface capable of translation... | 01/23/2001 |
| 6147751 | Lens refractometer A refractometer and a method for measuring the refractive index of a lens, wherein a thin insert in the form of a pad of a flexible transparent material attached to a rigid transparent sheet, is lightly pressed onto a surface of the lens under test, such ... | 11/14/2000 |
