Quotables
"Inventing is a combination of brains and materials. The more brains you use, the less material you need."
Charles Kettering
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7330326 | Recordable disk rotational speed error correction circuit An error correction circuit for determining an error in rotational speed of a recordable disk of a disk drive includes a sinusoidal error calculation portion adapted to generate a true oscillation error signal, and a summation portion adapted to combine the true osc... | 02/12/2008 |
| 7328889 | Measuring unit, partition member, mold for molding the partition member, and production method for the partition member A measuring unit is removably connected to a sample analyzer. The measuring unit includes a first member having a first channel through which a sample is allowed to pass, a second member having a second channel through which the sample is allowed to pass, and a part... | 02/12/2008 |
| 7329858 | Optical encoder and electronic equipment having same An optical encoder includes a mobile object having a plurality of aligned slits, a light-emitting portion for emitting light toward the mobile object, and a light-receiving portion 103 for receiving the light which has passed the mobile object. The light-rece... | 02/12/2008 |
| 7327661 | Optical pickup and optical information recording apparatus using the same An optical pickup includes a diffraction grating partitioned into three areas, in which the phase of periodic grating groove structure in an area is successively shifted from that in the adjacent area by 90°. In the generation of a differential push-pull signal, an... | 02/05/2008 |
| 7327005 | Optical semiconductor package with incorporated lens and shielding An optical semiconductor module including an optical semiconductor component that has a front face including an optical sensor. Encapsulation, defining a cavity in which the optical component is disposed, includes external electrical connections for the optical semi... | 02/05/2008 |
| 7324212 | Optical encoder having slanted optical detector elements for harmonic suppression An optical encoder includes a source of a light beam, an optical grating that generates a spatial pattern of interference fringes, and an optical detector which includes generally elongated detector elements that sample the interference fringe pattern at spatially s... | 01/29/2008 |
| 7319509 | Attenuator for attenuating wavelengths unequal to a used wavelength There is provided an attenuator for attenuating electromagnetic radiation of wavelengths Unequal to a used wavelength, including a grating element having i) grating grooves that produce a grating period (p), and ii) a grating plane. The grating period (p) is least a... | 01/15/2008 |
| 7319526 | Apparatus for detecting displacement A displacement detection apparatus (100) includes a main scale (110) and a detection head (120). The detection head (120) includes a light emission/reception unit (130) and an optical device unit (140). The optical device un... | 01/15/2008 |
| RE39978 | Scanning phase measuring method and system for an object at a vision station A method and system are provided including an optical head which moves relative to an object at a vision station to scan a projected pattern of imagable electromagnetic radiation across the surface of an object to be inspected at a relatively constant linear rate to... | 01/01/2008 |
| 7312437 | Displacement sensor, method for detecting the optimal reference position, and method for judging stability of detecting the reference position of displacement sensor A displacement sensor which detects a positional displacement of a movable member, comprises a position signal generating section configured to generate a periodical signal in accordance with movement of the movable member, a generating section of a signal for detec... | 12/25/2007 |
| 7312436 | Optical position measuring system with a detector arrangement and measuring graduation to produce partial filtering of undesired harmonics An optical position measuring system that includes a measuring graduation and a scanning unit that is movable in relation to the measuring graduation in a measuring direction. The scanning unit includes a light source that generates light towards the measuring gradu... | 12/25/2007 |
| 7304294 | Reflective encoder with reduced background noise An encoder having a code scale and an emitter detector module is disclosed. The code scale includes alternating reflective and opaque stripes. The emitter-detector module includes a light source that generates light and directs a portion of the generated light to th... | 12/04/2007 |
| 7304663 | Image test target for visual determination of digital image resolution Resolution of an image capture system is measured by imaging a test target having a progression of feature sizes and pitch in respective sub-fields thereof. The image captured by the imaging system is then inspected to determine a sub-field image which does not incl... | 12/04/2007 |
| 7304295 | Method and system of detecting eccentricity and up/down movement of a code wheel of an optical encoder set A system and method of measuring a rotational motion of a code wheel measures a rotational movement of the code wheel including an error component due to a non-rotational movement of the code wheel; measures the non-rotational movement of the code wheel; and produce... | 12/04/2007 |
| 7301348 | Electrostatic encoder An electrostatic encoder comprising receiving coupling electrodes formed on a scale, and extending in a predetermined direction, transmitting coupling electrodes provided on a sensor head, and located to face the receiving coupling electrodes, digital electrodes pro... | 11/27/2007 |
| 7301141 | Photoelectric encoder and electric device provided with the same A photoelectric encoder of the invention is furnished with a light-emitting element and a light-receiving element for sending and receiving light that are disposed in opposition to one another, and a support member for accommodating the light-emitting element and th... | 11/27/2007 |
| 7297971 | Alignment systems and methods for lithographic systems An alignment system for a lithographic apparatus has a source of alignment radiation; a detection system that has a first detector channel and a second detector channel; and a position determining unit in communication with the detection system. The position determi... | 11/20/2007 |
| 7297935 | Position-measuring device A position-measuring device includes: a measuring graduation provided on a measuring standard device arranged around in ring-like fashion; a scanning unit for optically scanning the measuring graduation using electromagnetic radiation; a scanning plate with a scanni... | 11/20/2007 |
| 7291832 | Optical encoders for position measurements Systems and methods are disclosed for providing position measurement information. For example, in accordance with one embodiment of the present invention, a multiple-pitch grating is disclosed which is adapted to receive one or more laser beams and provide an output... | 11/06/2007 |
| 7289229 | Optical displacement-measuring instrument An optical displacement-measuring instrument of a reflection type includes a sensor head movable above a scale in a direction of measurement. This instrument is of a three-grating type that comprises a first optical grating arranged close to a light source, a second... | 10/30/2007 |
| 7289212 | Lithographic apparatus, device manufacturing method and device manufacturing thereby The X, Y and Rx positions of a mask stage are measured using two optical encoder-reading heads measuring displacements of respective grid gratings mounted on the mask stage. The grid gratings are preferably provided on cut-away portions of the mask table so as to be... | 10/30/2007 |
| 7289232 | Dimension measurement method, method of manufacturing semiconductor device, dimension measurement apparatus and measurement mark A dimension measurement method includes irradiating a measurement mark on a sample on which a pattern to be measured is formed with light from a measurement direction, detecting reflected diffracted light from the measurement mark to measure intensity thereof, and c... | 10/30/2007 |
| 7286764 | Reconfigurable modulator-based optical add-and-drop multiplexer An optical add and drop multiplexer system comprising a first module for providing a first signal; a second module for providing a second signal; and a modulator for receiving a channel of the first signal at a first location, the first location configured to actuat... | 10/23/2007 |
| 7285769 | Optical encoder with reduced reflected light error having a light non-transparent portion with inclined surfaces In an optical encoder comprising an optical scale in which a light transmission portion and a light non-transparent portion are arranged and an output pattern obtained by emitting an incident light functions as an optical code, a light source portion and a light det... | 10/23/2007 |
| 7286246 | Method and apparatus for non-contact three-dimensional surface measurement A non-contact three-dimensional surface measurement method is provided in which a grating pattern projected onto an object being measured, while the phase of the pattern is being shifted, is observed in a different direction from a projection direction to analyze th... | 10/23/2007 |
| 7282699 | Optical encoder for improved detection of the absolute position of an origin point Two detection heads are arranged opposite to each other with respect to a scale. On the scale, there is provided a discontinuous portion formed in a reflecting portion to enable detection of original point position. The original point is determined by detecting the ... | 10/16/2007 |
| 7281339 | Encoder system A structure and associated method to accurately read an encoder tape in an encoder system. The encoder system comprises, a read head, a shoe structure adjacent the read head, and an encoder tape. The encoder tape is adapted to be read by the read head. The shoe stru... | 10/16/2007 |
| 7274464 | Position measuring device A position measuring device for detecting the spatial position of a movable element in relation to a base body, the device including a linear measuring device that measures a distance between a movable element and a base body and an angle-measuring apparatus that me... | 09/25/2007 |
| 7271920 | Position-measuring device A position-measuring device includes: a measuring graduation provided on a material measure going around in ring-like fashion; a scanning unit for optically scanning the measuring graduation using electromagnetic radiation; a scanning plate with a periodic scanning ... | 09/18/2007 |
| 7266421 | System for controlling lifting and remote handling units located in a confined enclosure The control system is used to control manipulation equipment (41) and carrying equipment (43) confined in a containment (40) inaccessible to operators and to perform maintenance operations related to electronic circuits for onboard equipment enc... | 09/04/2007 |
| 7265850 | Fortified, compensated and uncompensated process-sensitive scatterometry targets A scatterometry target is provided in which a plurality of parallel elongated features are placed, each having a length in a lengthwise direction. A plurality of stress-relief features are disposed at a plurality of positions along the length of each elongated featu... | 09/04/2007 |
| 7265338 | Photoelectric encoder using an incoherent semiconductor light source A photoelectric encoder is provided, which emits light from a light source to a main scale and an index scale that can relatively move with respect to each other and obtains a light-receiving signal by interaction between the main scale and the index scale. The phot... | 09/04/2007 |
| 7247843 | Long-range gap detection with interferometric sensitivity using spatial phase of interference patterns An apparatus and method measures the gap between one substantially planar object, such as a mask, and a second planar object, such as a substrate. A gapping mark is used for measuring a gap between the first and second plates. The gapping mark includes a first grati... | 07/24/2007 |
| 7242466 | Remote pointing system, device, and methods for identifying absolute position and relative movement on an encoded surface by remote optical method A pointing system comprises an encoded surface and a pointing device for use with an encoded surface remote from the pointing device. The pointing device comprises a collimated light source for projecting a collimated light beam having a wavelength outside the visib... | 07/10/2007 |
| 7242484 | Apparatus and methods for surface contour measurement Apparatus and methods of measuring three-dimensional position information of a onto a surface of an object including two sources of radiation separated by a distance, each source having a spectral distribution, and being coherent with respect to the other of the sou... | 07/10/2007 |
| 7238932 | Optical position sensing device An optical position sensing device for sensing a two-dimensional displacement, comprising a first photosensor arranged parallel to a first axis; a second photosensor arranged parallel to a second axis; wherein the first and the second axis are at an angle with respe... | 07/03/2007 |
| 7238931 | Displacement detection apparatus The present invention provides a displacement detection apparatus uses short scales and can provide a long measurable range comparable to a single long scale with a short bed length. The displacement detection apparatus includes a scale, a first head and a second he... | 07/03/2007 |
| 7230726 | Scanning unit for a position measuring instrument for optical scanning of a object measuring graduation A scanning unit for a position measuring instrument for optical scanning of a measuring graduation. The scanning unit includes a light source that emits light in a direction towards a measuring graduation that generates modified light from the emitted light. A detec... | 06/12/2007 |
| 7230230 | Apparatus for adjusting a signal and prohibiting adjustment of the signal based on a position of a movable member A signal adjusting apparatus includes a movable member, a setting device, and a prohibiting device. The movable member is movable in a movable range to have the electrical signal adjusted in accordance with a position of the movable member. The setting device sets a... | 06/12/2007 |
| 7230722 | Shadow moire using non-zero talbot distance A method for measuring deformation in specimens is provided. The method includes providing a shadow moiré system, the shadow moiré system including an illumination source, a reference grating and an image capture device and providing a specimen. The method further... | 06/12/2007 |
