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7633045 Optical device, method for producing master for use in producing optical device, and photoelectric conversion apparatus  
In an optical device, a number of structures having higher portions or lower portions are arranged at a fine pitch equal to or shorter than a wavelength of visible light on a surface of a base....
7609439 Mask overlay for infrared target assembly  
An infrared target for use with indoor industrial G.P.S. has at least one mask or overlay applied to the lens of the target. The mask increases the precision of setting the location of any...
7586086 Scanning imaging device for image-substraction confocal microscopy  
The invention relates to an imaging device comprising means for generating two images which are filtered differently by a mask ( 304 ) and for combining same.
7569801 Optical head, optical reproducing apparatus, and optical recording and reproducing apparatus  
An optical head, capable of performing output control for a light source without weakening an intensity of a light beam for recording and reproduction even if an optical element is not added anew,...
7526230 Mark sensing device, turnable body driving device and image forming apparatus  
A mark sensing device of the present invention senses marks formed on a turnable body in a preselected periodic pattern in a direction of movement of the turnable body with light emitted from a...
7504648 Method and apparatus for determining focus of a scanning system  
A non-imaging tool for assisting in determining a focus in a scanning system that scans a planar object with a scanning beam in a fast scan direction, while the planar object is moved under the...
7491959 Defect inspection apparatus  
A defect inspection apparatus includes an illumination optical system which sets a transmission illumination region and a reflection illumination region on an inspection target surface of a mask,...
7482575 Rotary optical encoder employing multiple subencoders with common reticle substrate  
A rotary optical position encoder for detecting angular position includes a light source, a monolithic scale disk including an optical scale pattern, a monolithic reticle substrate including sets...
7476863 Device limiting the appearance of decoding artefacts for a gamma camera with a coded mask  
The invention relates to a device limiting the appearance of decoding artefacts for a gamma camera with a coded mask comprising a gamma radiation detector ( 3 ) opposite the coded mask ( 1 ) and...
7435945 Optical configuration for imaging-type optical encoders  
A displacement measuring device including a scale, and an optical readhead including an index pattern and a light receiving element is provided. A bright/dark pattern arising from a scale grating...
7432497 Absolute linear encoder  
An absolute linear encoder includes a plurality of absolute scales aligned in the detection direction with absolute calibrations, a plurality of detectors for detecting the calibrations on the...
7420156 Metal nanowire based bandpass filter arrays in the optical frequency range  
A metal nanowire array acts as a band pass filter in the visible to IR range. The filter may be used in a monochromator, spectrometer, color camera, analyte detector or other devices.
7417748 Method and apparatus for measuring dimensional changes in transparent substrates  
A method of measuring dimensional changes in a transparent substrate includes forming an array of reference markers on a reference plate, forming an array of substrate markers on the transparent...
7405392 Optical rotary encoder  
An optical encoder includes: a rotary slit plate having a rotation angle detection track including an optical slit; a light source for applying light to the optical slit; light detecting elements...
7402828 Position detector that prevents erroneous detection of a scale and liquid ejecting apparatus incorporating the same  
A liquid ejecting head is operable to eject liquid toward a target medium. A light emitter is operable to emit light. A light receiver is adapted to receive the light emitted from the light...
7345273 Integrated optical encoder  
A rotary switch including a control element, a light-emitting device arranged on a printed circuit board and configured to emit light, and at least two receivers arranged on the printed circuit...
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...
7312435 Determination of a physical state of an optical device  
The present invention relates to a determination of a physical state of an optical device by measuring a response signal. At least two subsequent measurements are executed. Therefore, a first...
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...
7193204 Multi-track optical encoder employing beam divider  
An optical encoder includes a sensor head, an encoder scale, and an optical wavefront dividing element. The sensor head includes a substrate, a light source, a first optical detector, and a second...
7176440 Method and apparatus for detecting objects using structured light patterns  
An object detection system is provided that projects one or more patterns onto a monitored area, captures one or more live images of the monitored area, and detects objects that enter the monitored...
7126696 Interferometric miniature grating encoder readhead using fiber optic receiver channels  
An interferometric fiber optic encoder readhead for sensing the displacement of a scale grating is disclosed. The detector channels of the readhead are fiber optic detector channels having...
7115848 Methods, systems and computer program products for calibration of microscopy imaging devices  
An imaging system on which a calibration method is practiced includes: a light source; a substrate for supporting an object; a patterning mask that generates a substantially periodic spatial...
7091475 Miniature 2-dimensional encoder readhead using fiber optic receiver channels  
A 2D fiber optic encoder readhead having multiple readhead portions for sensing the two-dimensional displacement of a scale grating is disclosed. The detector channels of the readhead portions are...
7053362 Absolute position miniature grating encoder readhead using fiber optic receiver channels  
An absolute position fiber optic encoder readhead having multiple readhead portions for sensing the displacement of respective scale grating tracks of a scale is disclosed. The detector channels of...
7034948 Displacement pickup  
A displacement pickup is provided which includes a displaceable scale ( 12 ) having defined therein a first area ( 12 a ) where positional information is recorded with a predetermined pitch and a...
7026602 Electromagnetic radiation detectors having a microelectromechanical shutter device  
The present invention provides for an improved electromagnetic radiation detector having a micromachined electrostatic chopper/shutter device. The MEMS flexible film chopper/shutter device provides...
6974498 High-reflectance paint for high-intensity optical applications  
Many commercial radiant energy processing systems, such as luminaires and light detectors, require highly efficient diffusely reflective surfaces that can withstand high temperatures. As disclosed...
6963063 Use of non-interdigitated commutation sensors on Opto-ASICS to achieve low CPR non-standard encoder resolutions  
A scale for a position encoder that includes a first graduation track having a first set of markings that are periodically arranged with a defined graduation period Δ, a second graduation track...
6927924 Imaging optical instrument  
An imaging optical instrument causes light emitted from a plurality of light sources arranged adjacent an object to image on recording surfaces of a photosensitive or thermosensitive material. The...
6906315 High accuracy miniature grating encoder readhead using fiber optic receiver channels  
A fiber optic encoder readhead for sensing the displacement of a scale grating is disclosed. The detector channels of the readhead are fiber optic detector channels having respective phase grating...
6891150 Optical scale formed from mold having fixed and movable platens  
It is an object of this invention to provide a mold for manufacturing an optical scale which can be easily manufactured and is capable of outputting high-precision position signals. In order to...
6891147 Wavelength-selective diffraction element and an optical head device  
An optical head device having an optical element capable of transmitting without diffracting light having a wavelength emitted from a two-wavelength semiconductor laser and capable of diffracting...
6888126 Coded disc for an optoelectronic displacement or angle measuring device  
An optoelectronic position measuring device includes an encoder disk having a coding with a digital code and an analog coded track. The analog track includes segments which are in a series and...
6784409 Electronic device with encapsulant of photo-set resin and production process of same  
An electronic device is described which comprises a functional element chip having a photofunctional element formed thereon, a wiring member electrically connected to a terminal of the functional...
6750998 Electro-mechanical grating device having a continuously controllable diffraction efficiency  
An electro-mechanical grating device including: a base having a surface; a bottom conductive layer provided above said base; a spacer layer is provided and a longitudinal channel is formed in said...
6747607 Radiation power limiter  
Disclosed herein is an arrangement for shielding electronic sensors from undesired microwave or millimeter wave radiation. In this arrangement, reflective element is disposed in the sensor path to...
6737652 Coded aperture imaging  
Improved systems and methods for coded aperture imaging of radiation-emitting sources. According to one aspect, the present invention is directed to reducing and/or eliminating the artifacts that...
6717662 Arrangement for determining the position of a light source  
An arrangement for determining the position of a light source includes a light-sensitive detector device and an arrangement for casting a shadow onto part of the light of the light source shining...
6713756 Optical encoder and optical rotary encoder  
There is disclosed an optical encoder in which a scale can be displaced to cross a first light beam emitted from a first light source, and has a first light modulation region formed of a...
6703602 Optical encoder with at least one lenticular sheet  
An optical encoder comprising a light source ( 12 ) emitting a light beam, a first lenticular array ( 14 ) to which the light beam is directed, a second movable lenticular array ( 16 ) to which the...
6690002 Photodetector array and optical communication monitor module using the same  
When a diffraction grating having a grating period of d and a diffraction order of m for an incident light having a wavelength interval Δλ i between i'th and (i+1)'th channels is used, an...
6683678 Optic flow sensor with negative iris photoreceptor array  
An improved optic flow sensor is provided which affords enhanced bandwidth without the use of a lens. A plurality of photoreceptor circuits, arranged in a linear array, sense light received from a...
6639206 Rotary angle sensor for a rotary member  
A rotary angle sensor for a rotary member such as a motor vehicle wheel comprises an emitter, and a plurality of reflectors arranged in the form of flat surfaces on a circular-cylindrical surface...
6635863 Optical encoder  
An optical encoder comprises a main scale ( 1 ) having scale gratings ( 11 ) formed thereon with a certain angular pitch along a measurement axis (x 1 ) that describes a circular arc. It also...
6630660 Image processing system and method for removing or compensating for diffraction spots  
Method and apparatus for determining the location at which radiation is incident on the sensor system which includes an EMI screening mesh by comparing the actual image detected, which includes the...
6603114 Scanning head comprising a semiconductor substrate with a blind hole containing a light source  
A scanning head is described, having on a side facing a scale at least one patterned photodetector, which is realized in a semiconductor substrate. The semiconductor substrate has an anisotropic...
6596982 Reflection suppression in focal plane arrays by use of blazed diffraction grating  
A reflection suppression system for suppressing reflection from scanned infrared focal plane arrays using a system of two or more blazed diffraction gratings in the path of radiations to the array.
6570143 Wavefront sensing device  
The wavefront sensing device consists of a light source, a binary phase mask ( 10 ), a fixed focus lens ( 11 ) and at least two finite sized spatially separated detectors ( 12 ) positioned in the...
6563109 Apparatus for optoelectronically determining power using a light source being of annular design  
The present invention provides an apparatus for optoelectronically determining power for a moving machine element. The apparatus includes two parallel coding discs which are mounted on the machine...