9959 results about "Light sensitive" patented technology

An optical-based sensor for detecting the presence or amount of an analyte using both indicator and reference channels. The sensor has a sensor body with a source of radiation embedded therein. Radiation emitted by the source interacts with indicator membrane indicator molecules proximate the surface of the body. At least one optical characteristic of these indicator molecules varies with analyte concentration. For example, the level of fluorescence of fluorescent indicator molecules or the amount of light absorbed by light-absorbing indicator molecules can vary as a function of analyte concentration. In addition, radiation emitted by the source also interacts with reference membrane indicator molecules proximate the surface of the body. Radiation (e.g., light) emitted or reflected by these indicator molecules enters and is internally reflected in the sensor body. Photosensitive elements within the sensor body generate both indicator channel and reference channel signals to provide an accurate indication of the concentration of the analyte. Preferred embodiments are totally self-contained and are sized and shaped for use in vivo in a human being. Such embodiments preferably include a power source, e.g. an inductor, which powers the source of radiation using external means, as well as a transmitter, e.g. an inductor, to transmit to external pickup means the signal representing the level of analyte.

An imaging system for a vehicle includes an imaging array sensor and a control. The image array sensor comprises a plurality of photo-sensing pixels and is positioned at the vehicle with a field of view exteriorly of the vehicle. The imaging array sensor is operable to capture an image of a scene occurring exteriorly of the vehicle. The captured image comprises an image data set representative of the exterior scene. The control algorithmically processes the image data set to a reduced image data set of the image data set. The control processes the reduced image data set to extract information from the reduced image data set. The control selects the reduced image data set based on a steering angle of the vehicle.

In a method for manufacturing semiconductor devices and other finely structured parts, a projection objective (5) is used in order to project the image of a pattern arranged in the object plane of the projection objective onto a photosensitive substrate which is arranged in the region of the image plane (12) of the projection objective. In this case, there is set between an exit surface (15), assigned to the projection objective, for exposing light and an incoupling surface (11), assigned to the substrate, for exposing light a small finite working distance (16) which is at least temporarily smaller in size and exposure time interval than a maximum extent of an optical near field of the light emerging from the exit surface. As a result, projection objectives with very high numerical apertures in the region of NA>0.8 or more can be rendered useful for contactless projection lithography.

A system (100) and method for immersion lithography is disclosed in which an immersion medium (112) interfaces with a proximal lens (110) that focuses a patterned light beam on a light sensitive material (116), wherein the light sensitive material (116) is covered by a protective film (300) that interfaces with the immersion medium (112).

A photosensitizer together with complementary light energy are used to prevent the development of infection associated with an indwelling medical catheter or device. Light of a selected wavelength or wavelength band is coupled to the catheter or device and transmitted by a wall or walls thereof to one or both of the external and internal surfaces thereof. The catheter or device also incorporates at least one photosensitizer which releases a toxic substance when activated by the light energy which destroys bacteria on or around the catheter or device. A method of preventing infection using photosensitizers and complementary light energy is also disclosed.

An optical-based sensor for detecting the presence or amount of an analyte using both indicator and reference channels. The sensor has a sensor body with a source of radiation embedded therein. Radiation emitted by the source interacts with indicator membrane indicator molecules proximate the surface of the body. At least one optical characteristic of these indicator molecules varies with analyte concentration. For example, the level of fluorescence of fluorescent indicator molecules or the amount of light absorbed by light-absorbing indicator molecules can vary as a function of analyte concentration. In addition, radiation emitted by the source also interacts with reference membrane indicator molecules proximate the surface of the body. Radiation (e.g., light) emitted or reflected by these indicator molecules enters and is internally reflected in the sensor body. Photosensitive elements within the sensor body generate both indicator channel and reference channel signals to provide an accurate indication of the concentration of the analyte. Preferred embodiments are totally self-contained and are sized and shaped for use in vivo in a human being. Such embodiments preferably include a power source, e.g. an inductor, which powers the source of radiation using external means, as well as a transmitter, e.g. an inductor, to transmit to external pickup means the signal representing the level of analyte.

An integrated device for poration of biological tissue, harvesting a biological fluid from the tissue, and analysis of the biological fluid. The device comprises a tissue-contacting layer having an electrically or optically heated probe to heat and conduct heat to the tissue to form at least one opening, such as a micropore to collect biological fluid from the opening, and a detecting layer responsive to the biological fluid to provide an indication of a characteristic of the biological fluid, such as the concentration of an analyte in interstitial fluid. In the embodiment in which, the probe comprises a photosensitizing assembly designed for the uniform application of a photosensitizing material, such as, for example, a dye or a pigment, to a tissue, e.g., the stratum comeum. In one embodiment, the photosensitizing assembly comprises photosensitizing material combined with a carrier, such as, for example, an adhesive or an ink, and the resulting combination is applied to a substrate, such as, for example, an inert polymeric substrate to form a photosensitizing assembly. In another embodiment, the photosensitizing assembly comprises photosensitizing material incorporated into a film-forming polymeric material.

An imaging system for a vehicle includes an imaging array sensor and a control. The image array sensor comprises a plurality of photo-sensing pixels and is positioned at the vehicle with a field of view exteriorly of the vehicle. The imaging array sensor is operable to capture an image of a scene occurring exteriorly of the vehicle. The captured image comprises an image data set representative of the exterior scene. The control algorithmically processes the image data set to a reduced image data set of the image data set. The control processes the reduced image data set to extract information from the reduced image data set. The control selects the reduced image data set based on a steering angle of the vehicle.

A method of making a microelectronic package includes providing a sacrificial layer having a first surface and providing an optoelectronic element having a front face including one or more contacts and a rear surface and securing the rear surface of the optoelectronic element over the first surface of the sacrificial layer. The one or more contacts are then electrically interconnected with one or more conductive pads on the sacrificial layer and a curable and at least partially transparent encapsulant is provided over the first surface of the sacrificial layer so as to encapsulate the optoelectronic element and the conductive pads. The encapsulant is then cured the sacrificial layer is at least partially removed so as to leave said one or more conductive pads on a bottom surface of the encapsulant, the bottom surface of the encapsulant defining the bottom of the package. The optoelectronic element may include a light sensitive chip such as an ultraviolet-erasable programmable read-only memory (UV EPROM) or a light emitting chip, such as a light emitting diode (LED).

An optical imaging system comprising: a taking lens system that collects light from a scene being imaged with the optical imaging system; a 3D camera comprising at least one photosurface that receives light from the taking lens system simultaneously from all points in the scene and provides data for generating a depth map of the scene responsive to the light; and an imaging camera comprising at least one photosurface that receives light from the taking lens system and provides a picture of the scene responsive to the light.

The present invention relates to a photosensitive composition comprising a triazine-based photoactive compound containing oxime ester. The photosensitive composition according to the present invention has good sensitivity, retention rate, mechanical strength, heat resistance, chemical resistance and developing durability since it contains, as photopolymerization initiator, a compound having an oxime ester group and a triazine group in one molecule and thus effectively absorbs UV radiation. Therefore, the photosensitive composition according to the present invention is advantageous not only in curing of materials for color filters, resin black matrixes, column spacers, overcoats and passivation films of liquid crystal displays, but also in high temperature process characteristics.

A liquid crystal device including a front electrode layer, rear electrode layer, a liquid crystal material located between the front electrode layer and the rear electrode layer. A polarizer is located between the liquid crystal material and the front electrode layer and changing an electrical potential between the rear electrode layer and the front electrode layer modifies portions of the liquid crystal material to change the polarization of the light incident thereon. A plurality of light sensitive elements are located together with the rear electrode layer and a processor determines the position of at least one of the plurality of light sensitive elements that has been inhibited from sensing ambient light.

An image-guided ultrasound system may include an ultrasound probe, a display configured to communicate with the ultrasound probe to receive ultrasound signals to display images from the ultrasound probe, and an imaging device that may be attached to or integral with the ultrasound probe and configured to communicate with the display to display information derived from images from the imaging device. The imaging device may include a stabilization assembly, an imaging device assembly physically coupled to the stabilization assembly, a plurality of light-sensitive devices physically coupled to the stabilization assembly, and a memory unit physically coupled to the imaging device assembly, the memory unit configured to store calibration or usage information for the image-guided ultrasound system.

A method and system for automated production of stereoscopic and animated images and hardcopies can utilize a light-sensitive lenticular material employing a conventional or non-conventional photographic emulsion or an instant-developing material. An automated printer can produce autostereoscopic and animated hardcopies in multiple formats from digital and non-digital sources, including single images, stereopairs, and multiple-image sets of negatives, transparencies, or prints. The printer, which includes a projection device and a material plate that can rotate around two perpendicular axes, can utilize software to automate viewing angle calculation, printer control, multiple-image alignment, distortion correction, and image processing and conversion. A digital camera can capture stereoscopic and animated images and record them digitally or on photographic film. A non-digital camera can record stereoscopic and animated images directly onto light-sensitive lenticular material employing a conventional or non-conventional photographic emulsion or an instant-developing material. The printer and cameras can utilize autostereoscopic monitors to preview parallax.

Light- and / or UV-radiation protective coatings for drug delivery devices, such as, for instance, drug eluting vascular stents, where the drugs being delivered via the stents are light sensitive. A method of fabricating a medical article, such as a drug eluting vascular stent, that includes the light- and / or UV-radiation protective coating.

A color measuring sensor assembly includes an optical filter such as a linear variable filter, and an optical detector array positioned directly opposite from the optical filter a predetermined distance. A plurality of lenses, such as gradient index rods or microlens arrays, are disposed between the optical filter and the detector array such that light beams propagating through the lenses from the optical filter to the detector array project an upright, noninverted image of the optical filter onto a photosensitive surface of the detector array. The color measuring sensor assembly can be incorporated with other standard components into a spectrometer device such as a portable calorimeter having a compact and rugged construction suitable for use in the field.

An apparatus for capturing images. In one embodiment, the apparatus comprises: a coded lens array including a plurality of lenses arranged in a coded pattern and with opaque material blocking array elements that do not contain lenses; and a light-sensitive semiconductor sensor coupled to the coded lens array and positioned at a specified distance behind the coded lens array, the light-sensitive sensor configured to sense light transmitted through the lenses in the coded lens array.

A liquid crystal device including a front electrode layer, rear electrode layer, a liquid crystal material located between the front electrode layer and the rear electrode layer. A polarizer is located between the liquid crystal material and the front electrode layer and changing an electrical potential between the rear electrode layer and the front electrode layer modifies portions of the liquid crystal material to change the polarization of the light incident thereon. A plurality of light sensitive elements are located together with the rear electrode layer and a processor determines the position of at least one of the plurality of light sensitive elements that has been inhibited from sensing ambient light.

A method and apparatus for curing photosensitive materials uses LEDs and an optical concentrator to generate high optical power intensities. An LED array, comprising a plurality of LED assemblies, generates collimated light. A collection lens functions as an optical concentrator and focuses the collimated light to a desired spot size at a desired location. The LED assemblies may be at least partially disposed in a cooling plenum, where the cooling plenum is at least partially defined by the collection lens. Each LED assembly within the LED array may be detachably coupled to a mounting surface, enabling easy replacement of individual LED assemblies within the LED array. The photocuring assembly may also include a redirecting assembly disposed between the collection lens and the desired location that may further concentrate the light at the desired location. The photocuring assembly may include more than one of the above features.

A method and material for self-cleaning of the teeth and mouth using a source of light in the visible range in conjunction with a photosensitive oral hygiene composition possessing a broad absorption spectrum in the visible range. The invention selectively eliminates harmful bacteria by use of a photosensitive agent and a light source. The present invention involves the use of a light-providing dental device to activate a photosensitive agent and destroy harmful bacteria in the oral cavity. It prevents or deters oral diseases, inflammations, and infections.

An image sensor for capturing a color image comprising a two dimensional array of light-sensitive pixels including panchromatic pixels and color pixels having at least two different color responses, the pixels being arranged in a repeating pattern having a square minimal repeating unit having at least three rows and three columns, the color pixels being arranged along one of the diagonals of the minimal repeating unit, and all other pixels being panchromatic pixels.

A panoramic camera system includes a plurality of camera units mounted in a common, e.g., horizontal, plane and arranged in a circumferential array. Each camera unit includes one or more lenses for focusing light from a field of view onto an array of light-sensitive elements. A panoramic image generator combines electronic image data from the multiplicity of the fields of view to generate electronic image data representative of a first 360-degree panoramic view and a second 360-degree panoramic view, wherein the first and second panoramic views are angularly displaced. A stereographic display system is provided to retrieve operator-selectable portions of the first and second panoramic views and to display the user selectable portions in human viewable form. In a further aspect, a video display method is provided.

An image sensor includes at least one photosensitive element disposed in a semiconductor substrate. Metal conductors may be disposed on the semiconductor substrate. A filter may be disposed between at least two individual metal conductors and a micro-lens may be disposed on the filter. There may be insulator material disposed between the metal conductors and the semiconductor substrate and / or between individual metal conductors. The insulator material may be removed so that the filter may be disposed on the semiconductor substrate.

A solid-state imaging apparatus includes an image pick-up section in which photosensitive devices are arranged in, e.g., a honeycomb G square lattice, RB full-checker pattern due to shifted pixels. Regions void of the photosensitive devices are assumed to be virtual photosensitive devices. A signal processing section generates data for the virtual photosensitive devices by using the data of surrounding photosensitive devices while attaching importance to accurate color reproduction and horizontal and / or vertical resolution. As a result, the number of pixel data are increased in a square lattice arrangement. Therefore, high quality image signals are readily achievable with a smaller number of photosensitive devices than conventional with a conventional apparatus. Interpolation can be executed with the high quality signals to the limit of resolution with an adequate circuit scale. The honeycomb arrangement guarantees the required size of the individual pixel and thereby the sensitivity of the entire apparatus while increasing yield on a production line. False colors particular to a single photosensitive portion can be reduced by, e.g., uniform interpolation. Particularly, when a digital camera is constructed by using an imaging apparatus including optics operable with a silver halide sensitive type of film, false colors can be reduced without resorting to an optical low pass filter.

Two operation channels CH1 and CH2 of a bidirectional photothyristor chip 31 are disposed away from each other so as not to intersect with each other. In between a P-gate diffusion region 23 on the left-hand side and a P-gate diffusion region 23′ on the right-hand side on an N-type silicon substrate, and in between the CH1 and the CH2, a channel isolation region 29 comprised of an oxygen doped semi-insulating polycrystalline silicon film 35a doped with phosphorus is formed. Consequently, a silicon interface state (Qss) in the vicinity of the channel isolation region 29 on the surface of the N-type silicon substrate increases, so that holes or minority carriers in the N-type silicon substrate are made to disappear in the region. This makes it possible to prevent such commutation failure that when a voltage of the inverted phase is applied to the CH2 side at the point of time when the CH1 is turned off, the CH2 is turned on without incidence of light, and this allows a commutation characteristic to be enhanced.

Optical and optoelectronic devices and methods of making same. Under one aspect, an optical device includes an integrated circuit an array of conductive regions; and an optically sensitive material over at least a portion of the integrated circuit and in electrical communication with at least one conductive region of the array of conductive regions. Under another aspect, a method of forming a nanocrystalline film includes fabricating a plurality of nanocrystals having a plurality of first ligands attached to their outer surfaces; exchanging the first ligands for second ligands of different chemical composition than the first ligands; forming a film of the ligand-exchanged nanocrystals; removing the second ligands; and fusing the cores of adjacent nanocrystals in the film to form an electrical network of fused nanocrystals. Under another aspect, a film includes a network of fused nanocrystals, the nanocrystals having a core and an outer surface, wherein the core of at least a portion of the fused nanocrystals is in direct physical contact and electrical communication with the core of at least one adjacent fused nanocrystal, and wherein the film has substantially no defect states in the regions where the cores of the nanocrystals are fused.

In the manufacture of a semiconductor device, a photosensitive layer is deposited to cover an exposed portion of an electrode with the photosensitive layer. The photosensitive layer is then subjected to a photolithography process to partially remove the photosensitive layer covering the electrode. The electrode may be a ball electrode or a bump electrode, and the semiconductor device may be contained in a wafer level package (WLP) or flip-chip package.

Methods and systems for performing multiple pulse LIDAR measurements are presented herein. In one aspect, each LIDAR measurement beam illuminates a location in a three dimensional environment with a sequence of multiple pulses of illumination light. Light reflected from the location is detected by a photosensitive detector of the LIDAR system during a measurement window having a duration that is greater than or equal to the time of flight of light from the LIDAR system out to the programmed range of the LIDAR system, and back. The pulses in a measurement pulse sequence can vary in magnitude and duration. Furthermore, the delay between pulses and the number of pulses in each measurement pulse sequence can also be varied. In some embodiments, the multi-pulse illumination beam is encoded and the return measurement pulse sequence is decoded to distinguish the measurement pulse sequence from exogenous signals.