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| Number | Title | Issue Date |
| 6271513 | Large area scanning tip system for near field microscope A shear force feedback system, a large area scanning tip near field optical microscope using said system, and a scanning method of said microscope are provided. The shear force feedback system uses a probe to scan a large area of a sample's surface. This ... | 08/07/2001 |
| 6249007 | Non-contact distance measuring apparatus The invention relates to a non-contact distance measuring apparatus, comprising a casing, a distance measuring means located within the casing for measuring the distance between the distance measuring means and an object using electromagnetic radiation, a... | 06/19/2001 |
| 6246050 | Optical encoders using non-patterned targets An optical encoder can detect relative movement of a target without the use of a systematic pattern on the target. Natural features of different areas of the target are imaged by a photosensor array. The photosensor array generates a sequence of data fram... | 06/12/2001 |
| 6225638 | Disc discrimination device and disc discrimination method In a disc discrimination device provided with a disc apparatus on which a plurality of types of disc can be loaded, when a disc D is loaded on a turntable, detection light is irradiated from light irradiation means 3 and light receiving means 4 receives t... | 05/01/2001 |
| 6220158 | Rotation-angle measurement for printing presses A rotation-angle measurement for printing presses with at least one marking (2) arranged on a rotating element (1) and at least one sensor (3,4) which detects marking (2). The at least one marking (2) extends along the entire circumferential path (5) and ... | 04/24/2001 |
| 6211506 | Method and apparatus for electro-optically determining the dimension, location and attitude of objects A method and apparatus for optically determining the dimension of part surfaces. Particular embodiments describe optical triangulation based coordinate measurement machines capable of accurate measurement of complex surfaces, such as gear teeth and turbin... | 04/03/2001 |
| 6201603 | Position detecting apparatus for semiconductor wafer A position detecting apparatus for a semiconductor wafer includes a wafer worktable supported by an X-Y stage. The worktable is rotatable about an axis on a reference center for positioning the wafer. The apparatus also includes a photoelectric sensor arr... | 03/13/2001 |
| 6191407 | Apparatus and method for spatially stabilizing projected or viewed images with a locating symbol position detection The present disclosure teaches a method and apparatus for use in stabilizing images. The invention operates to sense the position of a locating symbol having a known relationship to the image to be stabilized, compare the position of the locating symbol t... | 02/20/2001 |
| 6191856 | Optical inspection device An optical device for establishing a spatial orientation for a drill bit includes at least three light sources and two cameras. The first light source is used to silhouette the drill bit; a second light source is used to generate a reflection from a prima... | 02/20/2001 |
| 6169490 | Outlet port protective device for stocking unit An installation for protecting the outlet port of a stocking unit. The installation includes an outlet port having four wafer boat supporters, two wafer boat sensors and a set of light-intercepting sensors. Through the light-intercepting sensors and the w... | 01/02/2001 |
| 6160265 | SMIF box cover hold down latch and box door latch actuating mechanism A SMIF box cover hold down latch and box door latch actuating mechanism installed in the port door of a SMIF system has two box door latch actuating pins extending from a central pivot shaft of the actuating mechanism to mate with corresponding holes in t... | 12/12/2000 |
| 6151117 | Optical sensor with telecentric optics A substrate sensor system having a light source for radiating light toward a substrate position, a light sensor system positioned to receive light transmitted or reflected at the substrate, a lens that images the light transmitted or reflected at the subs... | 11/21/2000 |
| 6147356 | Arrangement for the detection of disk-shaped objects in a cassette An arrangement for the detection of disk-shaped objects in a cassette preferably for detecting the presence and the position of semiconductor wafers in a cassette is disclosed. Reliable detection of disk-shaped objects in cassettes is provided regardless ... | 11/14/2000 |
| 6140661 | Loader with a matching finger that loads a head gimbal assembly onto a disk A loader that loads a head onto a disk. The head is typically mounted to a flexure arm which has a rail. The rail may have a top edge. The loader has a finger which can engage the flexure arm at a location that does not make contact with the top edge of t... | 10/31/2000 |
| 6127689 | Method and apparatus for positioning a member relative to an object surface A method and apparatus for positioning a member in a desired position relative to a surface of an object including providing positioning means for positioning the member, sensing the attitude of the object surface relative to the member or the positioning... | 10/03/2000 |
| 6124601 | Position sensor having a reflective projecting system and device fabrication method using the sensor A position detecting apparatus for detecting the position of a substrate in an interval direction in which the substrate is spaced by an interval form a pattern-printing projection optical system for printing pattern on the substrate includes first and se... | 09/26/2000 |
| 6114711 | Contact position sensor with optical feedback A method and apparatus is provided for determining the touch down position of a tool or probe used in bonding and placement machines. The tool holder is coupled to a Z-drive motor and comprises a fixed end coupled to a resilient member. The tool holder ha... | 09/05/2000 |
| 6100538 | Optical digitizer and display means for providing display of indicated position An optical digitizer is constructed for determining a position of a pointing object projecting a light and being disposed on a coordinate plane. In the optical digitizer, a detector is disposed on a periphery of the coordinate plane and has a view field c... | 08/08/2000 |
| 6097418 | Method and apparatus for combining a plurality of images without incurring a visible seam The present invention eliminates artifacts in an image formed using a plurality of imaging sources. Visible seams in the image are eliminated by randomizing the stitch point between the scan lines produced by each imaging source. The randomization may be ... | 08/01/2000 |
| 6093925 | Reel sensor and start/finish end detecting device In a reel sensor for a start/finish and detecting device in which a light from a light-emitting element is radiated into an incident light window formed in a video cassette and a start/finish end of a video tape is detected based on an intensity of a ligh... | 07/25/2000 |
| 6087719 | Chip for multi-chip semiconductor device and method of manufacturing the same A plurality of chips each having two or more alignment holes for transmitting a laser beam are stacked. The laser beam is irradiated onto the uppermost or lowermost one of the stacked chips. A photodetector detects the laser beam output from the stacked c... | 07/11/2000 |
| 6081336 | Microscope calibrator A microscope calibrator includes a housing supporting a series of focusing targets each situated at a predetermined distance from one another. Attributes of the microscope are determined by focusing the microscope on one ore more of the focusing targetrs ... | 06/27/2000 |
| 6060720 | Method and apparatus for determining and encoding linear position by means of lenticular screens A method of determining linear position by means of lenticular screens in a direction perpendicular to the axes of the lenticules and in the planes of the screens is disclosed comprising the steps of: a) directing a collimated beam of radiation perpendicularly... | 05/09/2000 |
| 6034378 | Method of detecting position of mark on substrate, position detection apparatus using this method, and exposure apparatus using this position detection apparatus In a method of detecting a position of a position detection grating mark formed with a small step structure on a surface of a flat object, an illumination light beam is irradiated on the grating mark at a predetermined incident angle. The illumination lig... | 03/07/2000 |
| 6002125 | Product scanning apparatus and method using a plurality of eight sensors over the entire width of a background surface means In an apparatus and a method for optically determining the position of products by means of light-sensitive sensors on a background moving relative thereto such as a conveyor belt, at least one light source radiating light onto the conveyor belt is arrang... | 12/14/1999 |
| 5982494 | Non-contact position sensor A device for measuring the displacement of a movable object includes a stationary light source that produces an incident light beam. A target feature, attached to, or integral with, the object, reflects the incident light beam. A stationary photodetector,... | 11/09/1999 |
| 5977539 | Optical position-measuring device having reference mark graduation structures with chirp fields A position-measuring device for the determination of the relative position of two objects movable with respect to one another includes at least two graduation carriers connected to the movable objects on each of which, formed as chirp fields, are disposed... | 11/02/1999 |
| 5952670 | Anti-wafer breakage detection system A circuit configured to generate an error signal that may be used to disable a loading mechanism (such as a loading mechanism in a wafer sorter). The circuit comprises a wafer sense circuit configured to generate a first pulse in response to a wafer passi... | 09/14/1999 |
| 5949087 | Apparatus and method for positionally enhancing an image The present disclosure teaches a method and apparatus for use in stabilizing images. The invention operates to sense the position of the image to be stabilized, compare the position of the image to a reference to determine a displacement value responsive ... | 09/07/1999 |
| 5932887 | Apparatus for measuring the flying height and orientation of a magnetic head relative to a transparent medium based on frustrated total internal reflection The invention provides an apparatus for measuring the flying height and orientation of a magnetic head (54) relative to a transparent disk (20) based on both frustrated total internal reflection and total internal reflection. The apparatus comprises a hou... | 08/03/1999 |
| 5929983 | Optical apparatus for determining the height and tilt of a sample surface A device is provided for determining the height and/or tilt of local features on the surface of a sample. The device includes a laser projecting a collimated beam at an oblique angle at a reflection point on the sample surface and a converging lens having... | 07/27/1999 |
| 5909027 | Method for adjusting a position of a solid-state image detector in a given image-forming optical system A three-dimensional resolution chart is used to adjust the position of a solid-state image detector 4 in a given image-forming optical system. A plurality of blocks 10a are provided on an upper surface of a resolution chart 10. Each block 10a has an adjus... | 06/01/1999 |
| 5886787 | Displacement sensor and method for producing target feature thereof A device for measuring the displacement of a movable object includes a stationary light source that produces an incident light beam. A target feature, attached to, or integral with, the object, reflects the incident light beam and forms a first image of t... | 03/23/1999 |
| 5877491 | Method and apparatus for imaging an object illuminated with light Method and apparatus for imaging an object illuminated with light onto a photodetector array including a microcomputer for controlling the light gathering of the photodetector array by varying the amount of light reflected onto the photodetector array and... | 03/02/1999 |
| 5864145 | Optical tracing system for measuring elevation of a reference body above a reference surface The invention provides an optical tracing system for measuring elevation of a reference body above a reference surface, comprising a laser transmitter radiating a light beam in a downward direction; an optical unit for imaging the radiation reflected from... | 01/26/1999 |
| 5864778 | Device and process for measuring and calculating geometrical parameters of an object A device for measuring and calculating the geometrical parameters of an object includes a basic body, a movable and rotatable supporting apparatus for the object, two movable optical area measuring sensors, two illuminating devices allocated to the area m... | 01/26/1999 |
| 5847833 | Distance measuring method and distance measuring apparatus Two photodiodes are disposed side by side in the direction in which the slit light reflected from the object to be measured moves. One photodiode 1 of the two photodiodes receives the reflected slit light for a longer period than the other photodiode 2. W... | 12/08/1998 |
| 5841149 | Method of determining the distance of a feature on an object from a microscope, and a device for carrying out the method The invention is directed to a surgical microscope in which, to determine the distance between the microscope (8, 13) and the object (22), the travel time of a beam of light (57c) emanating from the microscope and reflected by the object is determined. Th... | 11/24/1998 |
| 5838000 | Method device and system for optical near-field scanning microscopy of test specimens in liquids A method, device, and system for optical near-field scanning microscopy on a test specimen in a liquid uses a light source that guides light focused on an optical fiber tip disposed near the test specimen. With the aid of the light beam extending largely ... | 11/17/1998 |
| 5835224 | Non-contact position sensor A device for measuring the displacement of a movable object includes a stationary light source that produces an incident light beam. A target feature, attached to, or integral with, the object, reflects the incident light beam. A stationary photodetector,... | 11/10/1998 |
