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| Number | Title | Issue Date |
| 7280199 | System for detecting anomalies and/or features of a surface A cylindrical mirror or lens is used to focus an input collimated beam of light onto a line on the surface to be inspected, where the line is substantially in the plane of incidence of the focused beam. An image of the beam is projected onto an array of charge-coupl... | 10/09/2007 |
| 7235136 | Device for reading the rotational speed of a paint sprayer provided with a rotating bowl The invention device measures the instantaneous rotation speed of a turbine (6) which is housed inside the body (3) of the paint sprayer (2) and which rotationally drives the rotating bowl (5) when the paint sprayer is mounted on the end ... | 06/26/2007 |
| 7126734 | Motor drive circuit with reduced coil crosstalk in a feedback signal indicative of mirror motion in light scanning arrangements Crosstalk between a drive coil and a feedback coil is eliminated by a motor drive circuit operative for generating the drive coil as a square wave, and by removing the crosstalk which occurs at zero transitions of a feedback signal. The drive coil is used to oscilla... | 10/24/2006 |
| 6992651 | Signal dividing circuit and semiconductor device To provide a constitution capable of reducing production cost in a semiconductor device for display of a type integrally formed with a drive circuit with a digital signal as an input signal and a pixel matrix unit, a signal dividing circuit is formed on a substrate ... | 01/31/2006 |
| 6934029 | Dual laser web defect scanner A dual laser web scanner is disclosed designed to detect defects in all types of webs and flat sheet materials, e.g., metal, plastic, textiles, paper, film, and others. The scanner can be used on opaque and transparent materials. Compared to the existing web scanner... | 08/23/2005 |
| 6927848 | Method and apparatus for detecting defects in a continuously moving strip of transparent material To detect defects in a continuously moving strip of transparent material, especially a wide thin glass strip, a narrow monochromatic light beam is guided transverse to the motion direction of the moving strip and is coupled into the moving strip, preferably through ... | 08/09/2005 |
| 6548821 | Method and apparatus for inspecting substrates Substrate inspection apparatus in accordance with the invention comprises optics for reflecting a laser beam off of a substrate and a detector for detecting the reflected laser beam. If a defect is present at the point where the laser reflects off the sub... | 04/15/2003 |
| 6386676 | Reflective type media sensing methodology A printer, which can detect a media sheet type, includes: a light emitting source and a reflector, the light emitting source being capable of emitting light in a light emission direction towards the reflector, the reflector being arranged in light emissio... | 05/14/2002 |
| 6060721 | Apparatus for detecting correct positioning of a wafer cassette A mechanical indicator assembly mounted on a cassette stage in a semiconductor processing system is mechanically actuated when a wafer carrying cassette is correctly positioned onto the stage. The indicator assembly includes a pin engaged by the cassette ... | 05/09/2000 |
| 5691533 | Method and apparatus for the detection of the location of multiple character marks This invention pertains to a detection system for locating and counting identification marks attached to a written or printed item. A signal processing method and apparatus is described which allows detection of multiple character marks as a single event ... | 11/25/1997 |
| 5591985 | Surface state inspecting system including a scanning optical system for scanning a surface to be inspected with a first light and for simultaneously scanning a diffraction grating with a second light A surface state inspecting system includes a scanning optical system for scanning a surface to be inspected, with first light and simultaneously for scanning a diffraction grating with second light, wherein the first light and the second light have mutual... | 01/07/1997 |
| 5278635 | Surface defect detection apparatus A surface defect detector for detecting a gentle wavy defect and a minute rough defect on a surface of an object. The detector has a conveyer to move the object in a linear direction, a laser beam generator to irradiate a laser beam onto the object in a d... | 01/11/1994 |
| 5220617 | Method and apparatus for object inspection A method and apparatus for the inspection and handling of surface level defects is taught. Briefly stated, the object to be inspected is positioned. A Laser light is polarized into at least one orientation and then reflected off of a rotated polygon mirro... | 06/15/1993 |
| 5104523 | Glass-plate sorting system A glass-plate sorting system for sorting glass plates being cut into products having a plurality of quality grades to simultaneously obtain products of desired quality grades. A discriminating-type flaw detector (101) detects the sizes and locations of fl... | 04/14/1992 |
| 5079434 | Optical scanning appartaus for seeking faults on moving material webs The invention relates to an optical scanning apparatus for the seeking of faults on throughmoving material webs (29) and comprises at least one light source, a mirror wheel (12) arranged in a housing (13) which periodically deflects a light beam produced ... | 01/07/1992 |
| 5026983 | Method and apparatus for examining food products by means of irradiation A method for examining food products for undesired ingredients by means of laser irradiation. A laser beam scans the food products according to a predetermined pattern. Variations in the intensity of the laser beam passing through the food products indica... | 06/25/1991 |
| 5027418 | Electro-optical inspection apparatus for printed-circuit boards with components mounted thereon A printed-circuit board inspection apparatus for checking the condition of each circuit component mounted by soldering on a printed-circuit board is disclosed in which a luminance signal obtained from the reflected light scattering from the printed-circui... | 06/25/1991 |
| 4924086 | Optical scanning apparatus for detecting faults on a surface An optical scanning apparatus for plane surfaces (13) having a laser light source (20), a light deflecting means (16) illuminated by the laser beam, a telecentric image forming element (15) and a light receiving means. Parallel to the scanning line (11) g... | 05/08/1990 |
| 4908517 | Apparatus for examining the surface of a substrate An apparatus for examining the surface of a substrate comprises irradiating means for supplying a light beam which scans the surface of the substrate, first and second light-receiving means for individually receiving scattered lights travelling in differe... | 03/13/1990 |
| 4904877 | Optical scanning apparatus for detecting faults in transparent material wherein the plane of incident light is arranged at the breuster angle to the normal to the surface An optical scanning apparatus for transparent, substantially flat material comprises a light source (21) and a mirror wheel (22) illuminated by the light beam. The mirror wheel generates a scanning beam which executes a periodic scanning movement in a sca... | 02/27/1990 |
| 4866288 | Apparatus for optically scanning a web of material The sharply bounded entry pupil (13) of an optical web monitoring apparatus is imaged by the system after passage through or reflection at the material web onto a dark field stop (16). This stop is provided at its periphery with light receiving surfaces h... | 09/12/1989 |
| 4831274 | Surface inspecting device for detecting the position of foreign matter on a substrate A surface inspecting device may be used to inspect the surface of a reticle having a central transparent portion, bearing a circuit pattern to be photoprinted on a semiconductor wafer, and a peripheral light-intercepting portion surrounding the central tr... | 05/16/1989 |
| 4822165 | Device for illuminating components of transparent material in testing for irregularities A device for illuminating components of transparent material by dot-scanning so that the components may be tested for surface irregularities and occlusions which comprises a component rotatably mounted so that the component may be rotated on its axis at a... | 04/18/1989 |
| 4791304 | Method and apparatus for scanning a web material in the direction of its width A method of scanning a web material and an apparatus for use in the method in which a web material is spatially divided into smaller divisions in a scanning direction while being scanned in the direction of a width thereof with a scanning beam moved by me... | 12/13/1988 |
| 4725139 | Method and apparatus for detecting defects in transparent materials A method of detecting defects present at the surface and/or internally in transparent materials, particularly of detecting included foreign bodies or bubbles in glass, is disclosed. The test material is scanned with an electromagnetic radiation of a singl... | 02/16/1988 |
| 4723659 | Apparatus for detecting impurities in translucent bodies An apparatus including a source for producing a concentrated light beam, such as a laser, a background element spaced from the source against which the light beam is directed, and a transport arrangement for moving translucent bodies, such as French cut p... | 02/09/1988 |
| 4643569 | Dual beam laser inspection apparatus An optical input beam is split into first and second beams lying in first and second non-parallel planes. A polygon mirror scanner receives the first and second beams on a single facet and generates first and second angularly displaced, non-parallel synch... | 02/17/1987 |
| 4634281 | Apparatus for the inspection of continuous sheets of material The inspection for surface deformation of flat glass is carried out by the flying-spot method wherein the beam of light is thrown by a rotating mirror 13 onto a folding mirror 6 which reflects the light onto the continuous sheet of glass 2 to be inspected... | 01/06/1987 |
| 4632546 | Grooved surface defect detection apparatus A fault detecting apparatus for flat articles generates a line of light on the article which is imaged onto a photoreceiver via an optical system having cylindrical imaging characteristics. For use with an article 11 having light diffracting characteristi... | 12/30/1986 |
| 4626101 | Surface defect inspecting apparatus The holding mechanism holds an object under inspection in a manner that the substantially entire surface of the object may relatively be scanned by a laser beam. A spherical integrating light collector has an opening disposed close to the inspected surfac... | 12/02/1986 |
| 4601576 | Light collector for optical contaminant and flaw detector A two-stage light collector, including a first stage which admits a scanning beam and a second stage which is optically connected to the first stage and has a light detector therein. The first stage has a shape which re-images diffusely scattered radiatio... | 07/22/1986 |
| 4597665 | Dual collector optical flaw detector A flaw detector for optically transmissive surfaces having a first light collector above the surface and a second light collector below the surface. A scanning light beam is directed into the first light collector through a beam entrance aperture and only... | 07/01/1986 |
| 4570074 | Flying spot scanner system A flying spot scanner system uses a beam splitting mirror to produce adjacent flying spot images on a material to be analyzed, typically a moving web. The images from the flying spots are split by this beam mirror and sensed by separate photodetectors. Th... | 02/11/1986 |
| 4546444 | Data compression interface having parallel memory architecture A data compression interface is characterized by a memory system having an architecture configured from a first and a second serial memory connected in parallel. One memory serves during alternate frames as a data collection memory while the other serves ... | 10/08/1985 |
| 4546250 | Detector in an image read-out system A photo-sensor, such as a photo-diode, is applied to the converging area of a flat type light transmission unit in an image read-out system, thereby intercepting a part of the scan light which falls on and travels through the light transmission unit after... | 10/08/1985 |
| 4538915 | Web inspection system having a product characteristic signal normalizing network An inspection system of the type having a rotating multifaceted mirror and a radiation collecting arrangement is characterized by a network in which the signal representative of the web being inspected is compensated for deviations superimposed on that si... | 09/03/1985 |
| 4528455 | Non-destructive testing system with dual scanning A system is disclosed in which a defect-indicating material is applied to the surface of a part which is scanned by a laser beam or by use of a television camera to develop electrical signals indicating defects. A comparison arrangement is provided for de... | 07/09/1985 |
| 4522497 | Web scanning apparatus A method and apparatus of photoelectrically scanning a moving web material is described which comprises scanning the web with a narrow light beam sweeping across and beyond the edges of the web, directing light reflected or transmitted by the web to a lig... | 06/11/1985 |
| 4500208 | Apparatus for seeking faults in wide material webs A fault seeking apparatus for detecting faults in carpet webs (15) has a first main mirror wheel (17) which is illuminated by a laser beam (18) and which generates via a concave mirror (13), a scanning beam (14) which is periodically displaced parallel to... | 02/19/1985 |
| 4460273 | Test apparatus for defects of plate A test apparatus for detecting defects on a plate is disclosed. An illumination light is focused to one surface of the plate and another illumination light is focused to the other surface of the plate, and scattered light from the defects on the surfaces ... | 07/17/1984 |
