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7619722 Lens replacing method and manufacturing method for alternative lens  
A method for replacing a lens having refractive power in a first projection optical system includes measuring a wavefront of measuring light passing through the first projection optical system in a...
7617060 Extracting higher order information from scene-based Shack-Hartmann wave-front sensing  
An adaptive optics system is provided, comprising a deformable mirror configured to receive an input beam with an aberrated wavefront and to reflect the input beam to a Shack-Hartmann wavefront...
7609372 System and method for measuring length of camera lens  
A system for measuring a total track length of a telescopic lens includes a testing chart, a light source, a processor, a display screen and a range finder. The lens and an image sensor are...
7589830 Method for testing a lens and positioning the lens relative to an image sensor  
A method for testing and positioning a lens includes determining whether a modulation transfer function (MTF) value of the lens for an object at a first object distance is not less than a first...
7519940 Apparatus and method for compensating a lithography projection tool  
An apparatus and method of compensating for lens imperfections in a projection lithography tool, includes extracting from a diffraction image created by the projection lithography tool a lens...
7510629 Method and device for analysing surface structure in paper or board  
A method for analyzing in real-time in a paper machine or board machine the surface structure of a web ( 1 ) of paper or board which method comprises the direction of an imaging system towards a...
7511803 Method for displaying result of measurement of eccentricity  
A method for displaying a result of measurement of eccentricity in an optical system is provided where an amount of eccentricity for each lens element's surface in a lens system can be displayed...
7499600 Method for characterizing a digital imaging system  
A method for use in characterizing a digital imaging system ( 53 ) having an array of imaging elements ( 35 ), and in particular for measuring the modulation transfer function (sometimes called the...
7440089 Method of measuring decentering of lens  
Disclosed is a measuring method which can measure the decentering of an axis by the measurement of a two-dimensional curved surface profile. This method has a first step of measuring a profile of a...
7379170 Apparatus and method for characterizing an image system in lithography projection tool  
A system and method for characterizing an imaging system causes a diffraction image indicative of a test structure having a generalized line-grating to be formed and then extracts from a...
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...
7289199 Electronic imaging apparatus and microscope apparatus using the same  
An electronic imaging apparatus includes a connecting section connected to an optical apparatus; an optical element having a preset transmittance with respect to light in a preset wavelength...
7280191 Lens meter  
A lens meter that measures optical characteristics of lenses of an eyeglass unit and an inspection glass unit, including a glass unit support, light sources, light-projecting and -detecting optical...
7280193 Distinguishing mirror speckle from target images in weak signal applications  
Apparatus, and a related method, for eliminating the effect of speckle images caused by surface imperfections in a primary mirror of a stellar coronagraph. Depending on their size, mirror...
7071963 Optical write-in head, image forming apparatus using the same, and method for inspecting the apparatus  
An optical write-in head for obtaining a clear image even in printing at a relatively high recording density without generating strip-like irregularities in most cases. The optical write-in head...
7068360 Optical sampling waveform measuring apparatus  
In order to provide an optical sampling waveform measuring apparatus which can measure an ultra-high speed optical signal accurately by using a stable, narrow pulse, and a low timing jitter...
6989894 Lens evaluation method and lens-evaluating apparatus  
A lens evaluation method for calculating resolution evaluation value based on a detected luminance value in order to evaluate resolution of lens has a background luminance value acquiring step for...
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...
6961121 Method and system for evaluating optical disturbances occurring in a supersonic flow field  
A method of evaluating optical disturbances occurring in a flow field around a solid body. The method includes performing a computational fluid dynamics (CFD) calculation to obtain a...
6900884 Automatic measurement of the modulation transfer function of an optical system  
A system and method are described for automatically determining the modulation transfer function (MTF) of an optical system. In accordance with exemplary embodiments of the present invention,...
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...
6876443 Process and apparatus for automatically determining the modulation transfer function of focal plane array cameras  
In a process for automatically determining the modulation transfer function (MTF) of a focal plane array (FPA) cameras, a test grid is used to generate a beat whose amplitude corresponds to that of...
6842297 Wavefront coding optics  
Improved Wavefront Coding Optics, which apply a phase profile to the wavefront of light from an object to be imaged, retain their insensitivity to focus related aberration, while increasing the...
6781681 System and method for wavefront measurement  
A wavefront measuring system and method for detecting phase aberrations in wavefronts that are reflected from, transmitted through or internally reflected within objects sought to be measured,...
6525302 Wavefront coding phase contrast imaging systems  
The present invention provides extended depth of field or focus to conventional Phase Contrast imaging systems. This is accomplished by including a Wavefront Coding mask in the system to apply...
6515739 Apparatus and process for spatially resolved refractive power determination  
Apparatus for the spatially resolved determination of the refractive power distribution of an optical element, with a light source unit for illuminating the optical element with an extended pencil...
6498642 Endoscope inspection system  
An inspection system for performing a test selected from the group consisting of field of view, angle of view, distortion, image quality, depth of field, illumination system transmission...
6493075 Method to adjust the ranging of the modulation transfer function, MTF, of a sensing system  
A Method to adjust the Ranging of the Modulation Transfer Function, MTF, of a Sensing System, more specifically, it provides for the preparation of a Test Chart of Modulation Transfer Function, of...
6493074 Method and apparatus for measuring an optical transfer characteristic  
There are provided an optical transfer characteristic measuring method and apparatus capable of measuring an optical transfer characteristic of an optical device on optical frequency axis in wide...
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...
6393923 Dynamic bendloss measuring device  
The Dynamic Bendloss Measuring Device allows easy, repeatable determination of the bend sensitivity of a single-mode optical fiber by subjecting the fiber to dynamically changing bend angles under...
6072570 Image quality mapper for progressive eyeglasses  
An instrument and method for optical testing of an eyeglass lens, including progressive addition lenses, to obtain image quality measurements includes an illumination system for presenting a beam...
6069691 Automated method and apparatus for evaluating the performance characteristics of endoscopes  
In an automated method and apparatus for evaluating the performance characteristics of endoscopes, a computer system receives and stores a first set of test signals indicative of the results of the...
6042995 Lithographic process for device fabrication using a multilayer mask which has been previously inspected  
A lithographic process for semiconductor device fabrication is disclosed. In the process a patterned mask having a multilayer film formed on a substrate is illuminated by extreme ultraviolet (EUV)...
6031604 Gun-sight dry zeroing assembly  
A dry zeroing assembly is provided for zeroing a gun-sight implemented on a gun having a barrel. The dry zeroing assembly includes (a) a housing defining a first optical path and a second optical...
5966209 Lens module testing apparatus  
A lens module testing apparatus includes a light source, a grating reflects the light emitting from the light source to form a object light locating at a object location, an adjustable holding...
5959726 Modulation transfer function test compensation for test pattern duty cycle  
Improving accuracy of frequency response measurements of linear systems using modulation transfer function test compensation. An optical imaging system illuminates and images an input test pattern....
5847818 CD vernier apparatus for SEM CD measurement  
A critical dimension (CD) vernier apparatus, appropriate for scanning electron microscope (SEM) measurements, formed with additional encoding patterns. A central strip pattern is disposed along a...
5841525 Method and apparatus for performing modulation transfer function tests on endoscopes  
In a method and apparatus for performing an MTF test on endoscopes, a beam of light is filtered through a sinusoidally-varying medium defining a transmittance which is approximately uniform along a...
5818572 Two-dimensional modulation transfer function measurement technique  
Modulation Transfer Function of an electro-optical sensor is measured by focusing a square or rectangular target image onto the sensor and deriving the Modulation Transfer Function in two...
5793482 Multiple optical lens system with auto-focus calibration  
The present invention discloses an optical system with multiple optical lens having capability of auto-focus calibration, instead of conventional scheme of manual operations. Furthermore, achieve...
5726746 Automatic inspection system for camera lenses and method thereof using a line charge coupled device  
An automatic inspection system for camera lenses and method thereof using a line charge coupled device (CCD) which can process a signal easily and perceive a focal distance of lenses exactly by...
5696581 Lens evaluating device  
A lens evaluating device for measuring the optical transfer function of the lens under evaluation for evaluating the lens. The lens evaluating device includes an exposure light source, a converging...
5651076 System for determining the bidimensional characteristic function of a continuous optical conversion member  
A light source produces a light beam which is projected through a pattern to form a light beam incident on a surface of a continuous member. The pattern defines two transparent and opaque surfaces...
5629766 Global MTF measurement system  
The MTF for an optical or electronic device(s) is evaluated over a substantial portion of an image signal. As a result, a composite MTF representing a more global evaluation is achieved....
5621519 Imaging system transfer function control method and apparatus  
Accurately measuring and controlling the system transfer function of an imaging system, by eliminating interference from aliases. An image is captured of an image primitive with a uniaxial pattern,...
5621520 Transparency inspection method for blurriness in vehicle windscreens with elastomeric liners  
A method of determining the optical quality of blurriness in a windscreen transparency having a protective liner made of a particular material. A modulation transfer function (MTF) is measured...
5615006 Imaging characteristic and asymetric abrerration measurement of projection optical system  
A method of exposing images of measuring patterns formed on a mask on a photosensitive substrate through a projection optical system, measuring positional deviation quantities of the exposed images...
5600432 Method and apparatus for measurement of resolution of imaging systems  
A photographic facsimile of a line image at a predetermined orientation is illuminated by a collimated monochromatic light source to produce a diffraction pattern. The diffraction pattern is...
5582185 Device for evaluating optical elements by reflected images  
A method and apparatus for evaluating optical elements which utilizes reflected images. The method allows determination of the optical effects contributed by individual surfaces of a single optical...
Matches 1 - 50 out of 96 1 2 >