|
Match
|
Document |
Document Title |
|
|
6043885 |
Fringe deflectometry apparatus and method
A fringe deflectometry apparatus illuminates an optical component to be measured using radiation with a known wavefront, deflects the radiation after it has been reflected or transmitted by 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)...
|
|
|
6038387 |
Method for optical design of lighting equipment utilizing light-emitting devices
A method for precise design of light distribution for lighting equipment that use light-emitting devices, and for subsequently producing such equipment. By modeling the internal structure of an LED...
|
|
|
6034766 |
Optical member inspection apparatus
An optical member inspection apparatus is disclosed. A light shielding plate functions to cast a shadow region so that a line sensor receives an image producing a particular defined image data...
|
|
|
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...
|
|
|
6005669 |
Non contact measuring method for three dimensional micro pattern in measuring object
A non-contacting measuring method for three dimensional micro pattern in a measuring object is disclosed. Three dimensional micro pattern of the surface of the measuring object is measured using...
|
|
|
5978085 |
Apparatus method of measurement and method of data analysis for correction of optical system
A reticle consisting of a multiplicity of small openings corresponding to separate and distinguishable points is put in the reticle plane. This reticle is imaged down through an opening O in...
|
|
|
5971537 |
Lens specifying apparatus
A lens specifying apparatus is provided which includes a lens meter (1) for measuring and obtaining the lens refraction characteristic distribution information of a subject lens (30), an...
|
|
|
5973772 |
Layout judgment apparatus and layout judgment system
On a monitor (52) there is displayed a synthesized image (G4) in which an image (G1) of a subject lens showing a refractive power distribution, an image (G2) of a lens frame, and an eyepoint mark...
|
|
|
5973773 |
Lens distortion measurement using moire fringes
A lens distortion measurement system has a first grating of a first pitch on a transparent support such as a quartz reticle. The reticle is disposed between an illumination source and the lens...
|
|
|
5969807 |
Method for measuring lens imaging uniformity
A method (100) of separating linewidth variations due to reticle generation defects from other linewidth variations at a substrate surface during a pattern transfer process includes generating...
|
|
|
5966208 |
Optical testing apparatus for an optical system
A testing apparatus for an optical system comprises a plurality of markers disposed along an axis to be aligned with the optical axis of the optical system, the markers being axially spaced from...
|
|
|
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....
|
|
|
5949535 |
Protective rating system for eyewear
The present invention is a method of rating eyewear according to their solar radiation protective capabilities. Measured ultraviolet (UV), blue light (BLUE), and reflective and blocking properties...
|
|
|
5933228 |
Integral imaging lens sheets
A method, and apparatus and lens sheet manufacturing process which utilize the method, of evaluating the quality of a lenticular lens sheet having a front side carrying a plurality of elongated...
|
|
|
5917586 |
Lens meter for measuring the optical characteristics of a lens
A lens meter is provided in which a beam of light from an illumination optical system (20) is made incident upon a lens (40) to be inspected, the light beam which has passed through the lens (40)...
|
|
|
5896193 |
Apparatus for testing an optical component
A method and apparatus of generating a test signal for broadcast to a plurality of locations for testing optical devices is disclosed. A tunable laser sweeps from a lower wavelength to a higher...
|
|
|
5886779 |
Lens meter
A lens meter comprising light sources for project luminous flux for measurement to a lens to be examined and a light receiving element for detecting the measuring luminous flux passed through the...
|
|
|
5883982 |
Astigmatism measurement apparatus and method based on a focal plane separation measurement
A computer receives image data from a star-shaped optical target in the object plane and calculates angle-dependent boundary sharpness. The horizontal, x-direction, amplitude derivative and the...
|
|
|
5880843 |
Apparatus and method for determining the optical distortion of a transparent substrate
An apparatus and a method for determining the reflected optical power and the transmitted optical power of a transparent plate, for example the distortion transmitted and the distortion reflected...
|
|
|
5872625 |
Apparatus for measuring an optical characteristic of an examined lens
An apparatus for measuring an optical characteristic of an examined lens, comprising a first measuring optical system for projecting a first measuring light flux on an examined lens, which is...
|
|
|
5867259 |
Hidden-mark observing apparatus and hidden-mark observable lens-meter
A progressive power lens (L) is illuminated with a collimated light beam through an illuminating optical system (2) comprising an LED (5), a pinhole plate (6), and a collimator lens (7). The shadow...
|
|
|
5847819 |
Lens meter utilizing three different wavelengths
A lens meter is provided which includes a light source portion (1) which emits measuring light (P) having at least three different wavelengths; a light receiving portion (3) which receives the...
|
|
|
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...
|
|
|
5847822 |
Optical element inspecting apparatus
An optical element inspecting apparatus for detecting an optical defect of an optical element to be inspected. The inspection apparatus includes a diffusion plate, a device for emitting light...
|
|
|
5844672 |
Method for comparing lens distortion between two steppers
The mask for checking lens distortion comprises a plurality of mother verniers formed at each portion of the quartz and a plurality of the daughter verniers spaced from each of the plurality of the...
|
|
|
5844670 |
Method of and systems for measuring eccentricity of an aspherical lens surface
Accurate yet cost-effective measurement methods and systems determine eccentricity at a particular location of the aspherical lens surface. Since an aspherical lens generally has varying degrees of...
|
|
|
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...
|
|
|
5835208 |
Apparatus to measure wedge and centering error in optical elements
The present invention provides a measuring apparatus (10) for centering and determining wedge error of an optical element (12) under test. The measuring apparatus (10) preferably includes a lens...
|
|
|
5835207 |
Optical member inspecting apparatus
An optical member inspecting apparatus comprises an illuminating unit for illuminating a target lens to be inspected and a photographing unit to detect the light transmitted through the target...
|
|
|
5828446 |
Method of inspecting ophthalmic lenses
A method of continuously and automatically inspecting ophthalmic lenses. The lenses are continuously moved along a predetermined path to move each of the lenses, one at a time, into a lens...
|
|
|
5825476 |
Apparatus for mapping optical elements
An apparatus for mapping an optical element, the apparatus including a light source arranged to transmit a light beam toward the optical element, a beam separator including a plurality of beam...
|
|
|
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...
|
|
|
5812254 |
Illumination system for ophthalmic lens inspection
A system for providing diffuse illumination in the inspection of ophthalmic lenses for use in conjunction with a computer-based lens inspection apparatus. Below a package containing an ophthalmic...
|
|
|
5808731 |
System and method for visually determining the performance of a photolithography system
The preferred embodiments of the present invention provide a method and apparatus for visually inspecting features on a wafer that are smaller than can be optically resolved using normally using...
|
|
|
5801822 |
Ophthalmic lens inspection system
An ophthalmic lens inspection system includes an illumination assembly which generates diffuse light and transmits the diffuse light through an ophthalmic lens disposed in an inspection position,...
|
|
|
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...
|
|
|
5760889 |
Apparatus for the measurement of curvature of a surface
An apparatus for the measurement of the curvature of a surface is provided. The apparatus has at least one source of electromagnetic radiation, a two-dimensional electromagnetic radiation detector...
|
|
|
5748300 |
Method and system for automatically inspecting ophthalmic lenses
A method and system for automatically inspecting an ophthalmic lens. The method includes the steps of directing a light beam through the lens and onto an array of pixels, and assigning to each...
|
|
|
5745230 |
Ophthalmic lens inspection system and method
A lens inspection method and apparatus comprising a pallet having wells for receiving one or more lens containers at the receiving point. A conveyor achieves uniformity of pallet motion when...
|
|
|
5742381 |
Apparatus for measuring refractive power and radius of curvature of a lens
Apparatus and methods for measuring refractive power and radius of curvature of a lens are disclosed. The apparatus comprises a refractive-power measurement subsystem in combination with a...
|
|
|
5734465 |
Lens meter for measuring a shape of a progressive section
A lens meter in which a measuring light flux is projected against a lens to be examined and the optical characteristics of the examined lens are measured in reference to the position of an image...
|
|
|
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...
|
|
|
5719668 |
Lens-meter for measuring optical characteristics of optical lens
A lens meter in which light from a measurement light source is passed though a lens to be measured into a photoelectric conversion element so as to find optical characteristics of the lens to be...
|
|
|
5719669 |
Lens parameter measurement using optical sectioning
An arrangement for measuring desired parameters of a contact lens by optical sectioning which comprises a support fixture on which a contact lens is positioned. The support fixture includes a...
|
|
|
5717781 |
Ophthalmic lens inspection method and apparatus
Disclosed is an ophthalmic lens inspection method and apparatus comprising a camera to capture an image of an ophthalmic lens which has been illuminated by a light source. Location and intensity at...
|
|
|
5715345 |
Optical beam regeneration by optical fiber remapping
An optical beam regenerator includes a plurality of optical fibers into which an input beam is directed. The optical fibers are positioned to rearrange portions of the input beam to generate an...
|
|
|
5708501 |
Lens bearer and lensometer incorporating the same
The invention provides a lens bearer for bearing thereon a lens to be checked for an optical performance thereof. The lens bearer has a lens bearer body for bearing the lens thereon, and a covering...
|
|
|
5699440 |
Method and system for testing the performance of at least one electro-optical test device
A method and system for testing the performance of at least one electro-optical test device, comprising constructing an electro-optical system having a light source, a test target, a lens and an...
|