1611 results about "Specular reflection" patented technology

An interior rearview mirror system includes a compass system and a display. The compass system is operable to display information indicative of a directional heading of the vehicle to a driver of the vehicle. The display comprises a plurality of ports formed in a reflective coating of a mirror reflective element and includes illumination sources positioned behind and generally aligned with corresponding ones of the ports. Each of the illumination sources may be energized to project illumination through a respective one of the ports such that the ports are backlit by the respective illumination sources, in order to convey the directional information to the driver of the vehicle. The system may include a microprocessor operable to control each illumination source via a respective wire connected between the microprocessor and each illumination source. The compass system may utilize a global positioning system for vehicle direction determination.

A vehicle headlight including a common light distribution unit and a variable light distribution unit and a headlight system including the headlight can form a common light distribution pattern and a variable light distribution pattern using the common and the variable light distribution units. The variable distribution unit can include a light source, a phosphor panel, a mirror reflecting / scanning light emitted from the light source onto the phosphor panel and a projector lens projecting the scanning light adjacent the common light distribution pattern. The headlight system can include a front sensor detecting a surrounding condition, and can control the common and the variable light distribution units to form an optimum light distribution pattern in accordance with surrounding conditions. Thus, the disclosed subject matter can provide a headlight system including a headlight that can form an optimum light distribution pattern in accordance with surrounding conditions and can have a simple structure.

An interior rearview mirror assembly for a vehicle includes a prismatic mirror element and a display element. The prismatic mirror element includes a wedge-shaped prism element having a front surface and a rear surface and a second element having a transflective reflector on a first surface thereof. The front surface of the prism element generally faces a driver of the vehicle when the mirror assembly is installed in the vehicle, and the rear surface is opposite the front surface. The transflective reflector coated first surface of the second element is attached to the rear surface of the prism element via an optically matching medium. The display element is positioned to the rear of the prismatic mirror element and operates to display information through the prismatic mirror element so as to be viewable by a driver of the vehicle when the display element is operated to emit visible light.

An apparatus and methods for fiber optic confocal imaging systems. A plurality of fibers are in communication with a scan system that controllably deflects incident radiation into the fibers in a raster pattern. An index matching agent reduces specular reflections from the fibers.

An electrophoretic medium (100) comprises at least one type of particle (108) suspended in a suspending fluid (106) and capable of moving therethrough on application of an electric field to the medium, the particles (108) including at least one electrophoretically mobile specularly reflective particle.

An electrophoretic medium (100) comprises at least one type of particle (108) suspended in a suspending fluid (106) and capable of moving therethrough on application of an electric field to the medium, the particles (108) including at least one electrophoretically mobile specularly reflective particle.

There is provided in one embodiment an optical reader having an image sensor array. In one embodiment, the image sensor array can include a first subset of pixels and a second subset of pixels. The first subset of pixels can be devoid of light polarizing filter elements, and the second subset of pixels can be light polarizing pixels including light polarizing filter elements. An optical reader can be configured to selectively read out image data from an image sensor array's light polarizing pixels.

A flake-based pigment is provided having improved specular reflectance characteristics in the visible wavelength range. The flake-based pigment has a plurality of core flake sections each formed of a central reflector layer and dielectric support layers on opposing sides of the reflector layer. The resulting core flake section is a very thin three-layered structure that exhibits a uniaxial compressive strength much greater than a corresponding uniaxial tensile strength. This structure provides the benefits of rigidity and brittle fracture during manufacturing and application processes, which ultimately provides favorable planar and specular reflectance characteristics for the pigment in the visible wavelength range. A variety of outer coating layers can be formed around the core flake sections, such as various dielectric and absorber layers having thicknesses dependent upon the desired optical characteristics of the pigment.

An interference spectroscopy instrument provides simultaneous measurement of specular scattering over multiple wavelengths and angles. The spectroscopy instrument includes an interference microscope illuminated by Koehler illumination and a video camera located to image the back focal plane of the microscope's objective lens while the path-length difference is varied between the reference and object paths. Multichannel Fourier analysis transforms the resultant intensity information into specular reflectivity data as a function of wavelength. This multitude of measured data provides a more sensitive scatterometry tool having superior performance in the measurement of small patterns on semiconductor devices and in measuring overlay on such devices.

A mirror reflective element sub-assembly suitable for use for an exterior rearview mirror assembly of a vehicle includes a mirror reflective element, a mirror back plate having an indicator receiving portion established thereat, and a signal indication module having a light source. The signal indication module attaches to the indicator receiving portion of the mirror back plate and the light source is activatable to emit light through the indicator receiving portion. The light source is established at a circuit element and the signal indication module includes a housing that substantially encases the circuit element therein. The circuit element has electrical terminals extending therefrom and protruding at least partially at a connector portion of the housing so as to be electrically connectable to a power source of the vehicle. The connector portion of the housing is configured to provide a plug-socket connection between the power source and the signal indication module.

A system and method for generating and playing back three-dimensional (3D) movies are disclosed. The system is capable of partially rendering frames without relying upon exact viewpoint information. The partially rendered frames may be rendered to the extent possible without performing viewpoint-dependent processes, and then compressed and stored to a carrier medium. To reduce the amount of data to be stored, the viewer's possible viewpoints may be restricted (e.g., by defining a viewpoint-limiting volume or region). The resulting partially-rendered geometry data may be compressed using geometry compression. During playback, the compressed frames are read as a stream, and decompressed. Any final viewpoint-dependent rendering operations may then be performed (e.g., some lighting calculations and atmospheric effects, some fogging, specular highlighting, and reflections). A sensor such as a head-tracker may provide real-time viewpoint information that may be used by the playback system. After rendering, the frames are rasterized and then displayed in stereo.

A reflective element assembly for a mirror assembly of a vehicle includes a reflective element substrate and a conductive trace or layer disposed at a rear surface of the reflective element substrate. A non-conductive layer is applied at the conductive layer and covers at least a portion of the conductive layer and leaves at least some portions of the conductive layer exposed. At least one circuitry component is applied to at least one of the portions of the conductive layer. The circuitry component may comprise a carbon ink resistor printed onto the conductive trace.

A data reader such as for example an imaging reader with a CCD or CMOS imager or the like, having multiple images of a target item illuminated or acquired from different directions in which the image signals are combined into a complete image of the item or selected portions of the item being read such that specular reflection (over-saturated regions of the sensor array) are minimized or eliminated. In one example data reader configuration, multiple illumination sources such as first and second rows of light emitting diodes (LED's) are aimed at the item being scanned from different directions. The illumination sources are alternately pulsed and return signals are collected at one or more sensor arrays. A selected non-saturated return signal from one of the illumination sources, or selected non-saturated portions of return signal from both of the illumination sources are processed to generate a complete non-saturated image of the target. In one preferred processing scheme, assuming that each of the LED's is capable of illuminating the entire target (e.g. a barcode), a pixel-by-pixel minimum is taken of the two images thereby producing an image with specular reflection minimized or nearly eliminated.

A rigid and brittle bright metal flake is formed of a central layer of a reflective material supported on both sides by dielectric layers. In a preferred embodiment, the metal layer is aluminum having a thickness of about 100 nm and the dielectrics are either silicon dioxide or magnesium fluoride, each having a thickness of about 100 nm. The result is a very thin three-layered metal flake about 300 nm thick that exhibits a uniaxial compressive strength of about 8 times a corresponding uniaxial tensile strength. As a result, the metal flake is then afforded the benefits of rigidity and brittle fracture during the manufacturing and applicational processes which ultimately provides favorable planar and specular reflectance characteristics in the visible wavelength range.

A method of growing highly planar, fully transparent and specular m-plane gallium nitride (GaN) films. The method provides for a significant reduction in structural defect densities via a lateral overgrowth technique. High quality, uniform, thick m-plane GaN films are produced for use as substrates for polarization-free device growth.

An image without use of a flash is taken, along with an image using a flash. A difference image is generated by subtracting the flash-less image from the flash image. A threshold is applied to the difference image such that only large differences in intensity remain in the difference image. This artifact image is then subtracted from the flash image, thereby removing flash artifacts such as specular reflections and red-eye. The threshold used may be automatically calculated or may be set by the user. For some applications it may be desirable to set separate thresholds for each dimension of the color space (such as red, green, and blue) used. Once again these separate thresholds may be automatically calculated or may be set by the user.

A catadioptric camera creates images light fields from a 3D scene by creating ray images defined as 2D arrays of ray-structure picture-elements (ray-xels). Each ray-xel capture light intensity, mirror-reflection location, and mirror-incident light ray direction. A 3D image is then rendered from the ray images by combining the corresponding ray-xels.

A method of growing highly planar, fully transparent and specular m-plane gallium nitride (GaN) films. The method provides for a significant reduction in structural defect densities via a lateral overgrowth technique. High quality, uniform, thick m-plane GaN films are produced for use as substrates for polarization-free device growth.

A method and system for providing a spin filter is disclosed. The method and system include providing a pinned layer, a free layer, and a conductive nonmagnetic spacer layer between the pinned layer and the free layer. The method and system also include providing a spin filter layer and a capping layer on the spin filter layer. The spin filter layer is adjacent to the free layer. The spin filter layer is on an opposite side of the free layer as the nonmagnetic spacer layer and includes at least Pt and / or Rh. The capping layer has a specular reflection layer therein. In one aspect, the specular reflection layer allows specular reflection of current carriers traveling from the spin filter layer to the specular reflection layer. In another aspect, the specular reflection layer includes at least Ta, Ti, Zr, Hf, Nb, Al, Mo, W, Si, Cr, V, Ni, Co, and Fe.

A display device is provided which is able to effect high visibility display utilizing external light, and which is able to effect reflective display with a combination of various textures and color. The display device includes a first polarized-light separating member for transmitting a linearly polarized light component polarized in a first direction, a transmitted light polarization axis changing device capable of selecting states of changing and not changing a transmitted light polarization axis, a second polarized-light separating member for transmitting a linearly polarized light component in a polarized second direction and for mirror-reflecting a linearly polarized light perpendicular to the linearly polarized light component, and a reflecting element disposed in that order. Coloring layers or light-diffusing layers are formed on the surface or the back of the second polarized-light separating member.

A light-emitting diode device, such as a blue, green, blue-green light-emitting diode, with a one-wire-bonding characteristic and the method of manufacturing the same have been disclosed. The light-emitting diode device has a GaN-based semiconductor laminated structure formed on an insulating substrate. The GaN-based semiconductor laminated structure includes an n-type layer on its bottom side, a p-type layer on its top side, and an active layer, for generating light, sandwiched between the n-type and p-type layers. An annular isolation portion such as a trench or a high resistivity portion formed by ion implantation is formed in the GaN-based semiconductor laminated structure to separate the p-type layer into a central p-type layer and a peripheral p-type layer and to separate the active layer into a central active layer and a peripheral active layer. A p-type electrode is formed on the central p-type layer without electrically connecting to the peripheral p-type layer. A conductive layer is coated to cover the sidewalls and the bottom surface of the insulating substrate and to ohmically contact with the n-type layer. Preferably, an adhesion layer is sandwiched between the sidewalls and the bottom surface of the insulating substrate and the conductive layer to enhance the adhesive property. According to the present invention, the conductive layer may be formed as a mirror-like reflector or a light-transmissive layer.

The invention discloses a parallax optimization algorithm-based binocular stereo vision automatic measurement method. The method comprises the steps of 1, obtaining a corrected binocular view; 2, matching by using a stereo matching algorithm and taking a left view as a base map to obtain a preliminary disparity map; 3, for the corrected left view, enabling a target object area to be a colorized master map and other non-target areas to be wholly black; 4, acquiring a complete disparity map of the target object area according to the target object area; 5, for the complete disparity map, obtaining a three-dimensional point cloud according to a projection model; 6, performing coordinate reprojection on the three-dimensional point cloud to compound a coordinate related pixel map; 7, using a morphology method to automatically measure the length and width of a target object. By adopting the method, a binocular measuring operation process is simplified, the influence of specular reflection, foreshortening, perspective distortion, low textures and repeated textures on a smooth surface is reduced, automatic and intelligent measuring is realized, the application range of binocular measuring is widened, and technical support is provided for subsequent robot binocular vision.

Described is a scanner for reading an optical code which includes a light transmission system and an image acquisition system. The light transmission system projects light on a target. The image acquisition system receives light reflected from the target to generate an image of the target. The image acquisition system is arranged to receive the light reflected from the target at a plurality of angles so that, when specular reflection of the target is associated with a first of the plurality of angles, light from a second one of the plurality of angles is available to minimize image degradation associated with the specular reflection.