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748 results about "Lens hood" patented technology
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In photography, a lens hood or lens shade is a device used on the front end of a lens to block the Sun or other light source(s) to prevent glare and lens flare. Lens hoods may also be used to protect the lens from scratches and the elements without having to put on a lens cover. The geometry of a lens hood is dependent on three parameters: the focal length of the lens, the size of the front lens element and the dimensions of the image sensor or film in the camera.
Endoscope with distal tip having encased optical components and display orientation capabilities
An apparatus according to one embodiment includes an endoscope tip including a housing that is monolithically formed of a transparent material. At least one optical component is at least partially encased within the housing. The optical component can be, for example, a light source, a fiber optic, an imaging sensor, a lens, a reflector or a light shield. In another embodiment, an apparatus includes an endoscope having a distal end portion that includes a housing. The housing is monolithically formed with a transparent material and a light source is at least partially encased within the housing. The housing also includes a micro-defects portion within the transparent material of the housing. The micro-defects portion is configured to provide a selected output shape of a beam of light produced by the light source.
Owner:BOSTON SCI SCIMED INC
Compact optical system and packaging for head mounted display
ActiveUS20050219152A1Improve convenienceHigh acceptabilityTelevision system detailsPrismsDisplay deviceEngineering
A head mounted virtual image display unit is provided which is compact in size and weight, and incorporates a high performance optical system offering a clear see-through capability. A sliding light shield may be incorporated for those instances when see-through capability is not desired. A focus adjustment may be incorporated to permit the focusing of the image, for example, at a distance of approximately 18 inches to infinity. An adjustable headband may be incorporated that adapts to fit the users head. A flexible boom structure may be incorporated to facilitate fine positional adjustment of the optical assembly. A slider and ball joint mechanism may also be incorporated to facilitate positional adjustment of the optical assembly. A built-in microphone may be incorporated to enable speech input by the user. The head mounted virtual image display unit may be used comfortably in conjunction with eye or safety glasses, and provides a useful image to the user without blocking his view of the surrounding environment. The unit is designed to have a pleasing appearance so as to greatly enhance user acceptability.
Owner:IBM CORP
Projector type vehicle headlamp
ActiveUS20050201117A1Suppress emissionIncrease awarenessVehicle headlampsPoint-like light sourceLens hoodLight beam
Owner:KOITO MFG CO LTD
Reflective encoder with light shield and electronic device using such reflective encoder
InactiveUS7309855B2Good optical performanceElimination of signalSolid-state devicesMaterial analysis by optical meansLens hoodElectron
A reflection encoder is disclosed having a light emitting element in a light receiving element that are separated by a light shielding body that prevents unwanted light from entering the light receiving element. In variations of the invention, the light shielding body may be integrally formed with a mold resin portion that holds the light emitting element and light receiving element, formed by a sheet or plate, or formed using an opaque liquid resin that is poured between transparent resin bodies that encapsulate the light emitter and receiver. In operation, light radiated from the light emitting element is reflected by a code wheel and then received by a light receiving element. Other variations include varying the height at which the light receiving and detecting elements are disposed relative to the code wheel and tilting these elements towards each other so as to increase light efficiency.
Owner:SHARP KK
Recessed luminaire
ActiveUS20150308662A1Lighting support devicesLighting heating/cooling arrangementsCouplingEngineering
A recessed luminaire is described. The luminaire may include an aiming system allowing a rotation angle and / or a tilt angle of a light source to be adjusted while the light source is in operation. Additionally, the luminaire includes a light shield that is coupled to the aiming system such that the light shield may move in relation to the tilt angle and the orientation of the light source. The aiming system may be further coupled to a support panel such that rotation of the aiming system is provided by a rotatable coupling between one or more leaf Springs of the aiming system, and an upper surface of the support panel.
Owner:FOCAL POINT
Lamp with a capability of concentrating light
InactiveUS20050013133A1Increase lighting brightnessIncrease brightnessNon-electric lightingPoint-like light sourceLens hoodEngineering
Owner:YEH PETER
Pixel sensor cell including light shield
ActiveUS20100230729A1Avoids spurious light effectSolid-state devicesSemiconductor/solid-state device manufacturingCMOSElectrical conductor
CMOS image sensor pixel sensor cells, methods for fabricating the pixel sensor cells and design structures for fabricating the pixel sensor cells are designed to allow for back side illumination in global shutter mode by providing light shielding from back side illumination of at least one transistor within the pixel sensor cells. In a first particular generalized embodiment, a light shielding layer is located and formed interposed between a first semiconductor layer that includes a photoactive region and a second semiconductor layer that includes the at least a second transistor, or a floating diffusion, that is shielded by the light blocking layer. In a second generalized embodiment, a thin film transistor and a metal-insulator-metal capacitor are used in place of a floating diffusion, and located shielded in a dielectric isolated metallization stack over a carrier substrate
Owner:GLOBALFOUNDRIES US INC
System for compensation of differential aging mura of displays
A light shield sized to engage over a major portion of a display to substantially inhibit light from reaching a region between the light gathering element and the display. An optical coupling element is associated with the light gathering element to direct light emanating from the display to a light sensitive element in order to determine corrective data to reduce mura effects.
Owner:SHARP LAB OF AMERICA INC
Lighting unit for vehicle headlamp
InactiveUS20080285297A1Increase awarenessVehicle headlampsPoint-like light sourceOptical axisLens hood
A lighting unit for a vehicle headlamp is provided with a projection lens, a light source, a reflector, a shade, and a convex lens. The projection lens is arranged on an optical axis extending in a longitudinal direction of a vehicle. The light source is arranged on a rear side of a rear side focal point of the projection lens. The reflector is configured to reflect forward a light from the light source toward the optical axis. An upper end edge of the shade passes through a vicinity of the rear side focal point. The shade is configured to shield a part of a reflected light from the reflector. The convex lens is arranged between the light source and the shade. The convex lens is configured to converge the light from the light source into the vicinity of the upper end edge of the shade.
Owner:KOITO MFG CO LTD
Electronic analyte assaying device
The invention is an electronically processed single-step test device for detecting the presence of a preselected analyte in a fluid. The device includes a hollow rectangular outer casing, disposed within co-joined upper and lower sections of the casing are assay material, an electronic processing system, and a LCD display. The LCD display is observable through a viewing window. The assay material is a sorptive material including a fluid sample application region in the form of a sample wick in fluid communication with a test strip. The test strip includes an analyte capture region adjacent to a light shield. The electronic processing system includes red and green LEDs which are alternately pulsed or energized over predetermined periods of time to determine if fluid test results show a marker or markers in the capture region indicative of the presence of a preselected analyte in the fluid. If so, Yes+ is displayed on the LCD. If not, No− is displayed on the LCD.
Owner:CHURCH & DWIGHT CO INC
Lighting device
ActiveUS20140043544A1Increase awarenessIncrease freedomTelevision system detailsLighting elementsEffect lightEngineering
A lighting device includes a lighting unit and an enclosure (e.g., a shade) configured to cover a part or all of the periphery of the lighting unit and transmit light from the lighting unit. The lighting unit includes a light source section for lighting configured to radiate light and a video forming section configured to form video light obtained by modulating, on the basis of video information, light from a light source section for video formation configured integrally with or separately from the light source section for lighting and project the video light on the enclosure.
Owner:SEIKO EPSON CORP
Illuminator and projector
ActiveUS20050068505A1Regulation stabilityIncrease contrastTelevision system detailsNon-electric lightingLens hoodPeak value
When a video signal is inputted to a projector (10) through a video input terminal, a luminance peak value of an image of the video signal is detected by an image-analyzing circuit (61) to be outputted to a CPU (71). A gain-adjusting circuit (63) adjusts a luminance signal in the video signal based on a command from the CPU (71). The CPU (71) determines a gain adjustment amount based on the luminance peak value of the image obtained by the image-analyzing circuit (61) and outputs the result to the gain-adjusting circuit (63). For instance, when the luminance peak value (lp) of the image is 50% of the upper limit (Imax) thereof, a gain-adjusting amount AG is doubled In this case, an illuminating light volume of a light valve (44a) has to be reduced to 50%, which is achieved by light-attenuation by a light-source lamp (21) and an open / close light shield (23).
Owner:SEIKO EPSON CORP
Display device with chiplets and light shields
ActiveUS20100201253A1Reduce electromagnetic interferenceImprove performanceDischarge tube luminescnet screensLamp detailsLens hoodDisplay device
A light-emitting diode display device includes a transparent substrate; a plurality of chiplets located over the substrate between a transparent electrode and the substrate, each chiplet including drive circuitry for driving pixels to emit light and including a storage capacitor for storing charge and wherein light illumination of at least a portion of the drive circuit causes the capacitor to leak charge; a connection pad forming a first light shield separate from the drive circuitry located on the surface of each chiplet disposed over the drive circuitry and substantially shielding at least a portion of the drive circuitry from illumination, the connection pad electrically connected to the drive circuitry, and a second light shield disposed under the drive circuitry between the drive circuitry and the substrate to shield at least a portion of the drive circuitry from illumination.
Owner:GLOBAL OLED TECH
Imaging device
InactiveUS20060007551A1Operation of detaching the lens hood has been laboriousAvoid flaringTelevision system detailsColor television detailsLens hoodEngineering
An image pickup apparatus is provided. The image pickup apparatus permitting a conversion lens to be mounted and dismounted, wherein a lens hood is composed of a base portion on the mounting side and a tubular portion on the front side, the base portion and the tubular portion are detachably coupled to each other, and another lens is contained in the inside of the lens hood when the another lens is mounted on the front side of an optical system, whereby even when the conversion lens is being used, the lens hood can be used as it is, and the incident light contracting function of the lens hood can be maintained.
Owner:SONY CORP
Reflective star sensor light shield
InactiveCN102243414AEnhanced inhibitory effectSmall sizeAircraft componentsCosmonautic vehiclesCamera lensBlack paint
A reflective star sensor light shield comprises three thin-wall cone barrels, wherein the three thin-wall cone barrels are successively connected. Inner walls of two cone barrels which are far from a lens are smooth clean surfaces and are sprayed with black paint or black films with high reflectivity and a low scattering rate. The inner wall of the cone barrel which is close to the lens is a baffle vane or a barrel type structure of eliminating veiling glare threads and is sprayed with black paint or black films with low reflectivity and the low scattering rate. The whole light shield can possess a optimal length through setting an algebraic relation of cone angles of each cone barrel. The reflective star sensor light shield of the invention has a short length and light weight, and is convenient for processing and manufacturing. The reflective star sensor light shield possesses strong inhibition capability for stray light, such as sunlight and ground gas light, which is a strong light source out of field of view. The invention can be used for the star sensor to shade light and be used for optical remote sensors to explore deep space, such as a star camera and the like.
Owner:BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
Compact optical system and packaging for head mounted display
ActiveUS8289231B2Great convenience and acceptabilityCompact in size and weightTelevision system detailsPrismsDisplay deviceSpherical shaped
A head mounted virtual image display unit is provided which is compact in size and weight, and incorporates a high performance optical system offering a clear see-through capability. A sliding light shield may be incorporated for those instances when see-through capability is not desired. A focus adjustment may be incorporated to permit the focusing of the image, for example, at a distance of approximately 18 inches to infinity. An adjustable headband may be incorporated that adapts to fit the users head. A flexible boom structure may be incorporated to facilitate fine positional adjustment of the optical assembly. A slider and ball joint mechanism may also be incorporated to facilitate positional adjustment of the optical assembly. A built-in microphone may be incorporated to enable speech input by the user. The head mounted virtual image display unit may be used comfortably in conjunction with eye or safety glasses, and provides a useful image to the user without blocking his view of the surrounding environment. The unit is designed to have a pleasing appearance so as to greatly enhance user acceptability.
Owner:IBM CORP
Recording apparatus
InactiveUS7083245B2Reliable detectionDigitally marking record carriersDigital computer detailsLens hoodEngineering
A reliable detection of optically detecting the type of recording media is achieved. A part of a support member for supporting an optical sensor is pushed against the surface of a sheet by a spring so as to maintain the gap between the sensor and the sheet surface. With this arrangement, a recording apparatus which is free from wrong detection is achieved regardless of a gap-varying factor, that is, the remaining amount of sheets. Also, by arranging a part of a light-shielding hood so as to abut against the sheet, wrong detection due to disturbance light can be prevented.
Owner:CANON KK
Camera protective cover with self-cleaning device
ActiveCN101923271AEffective occlusionAvoid random reflexesTelevision system detailsColor television detailsLens hoodAir pump
The invention relates to a camera protective device in the video surveillance field, in particular to a camera protective cover with a self-cleaning device. The camera protective cover comprises a cover body, a sunshading board, a front end cover, a filter and a back end cover, wherein the front end cover and the back end cover are separately fixed on the front and back of the cover body; the front end cover is provided with a filter hole; the filter is fixed in the filter hole; the sunshading board is covered on the cover body; the camera protective cover also comprises the self-cleaning device; the self-cleaning device comprises a lens hood, an air pump and an air pipe; the hood body of the lens hood is provided with a circular vent pipe; the vent pipe is connected with the air pump through the air pipe; the inside of the circular vent pipe is provided with rows of small holes; each row of small holes has a plurality of small holes, the small holes point to the filter from different directions; and the circular part of the back end of the lens hood is provided with a clip, and the clip is clamped in a slot on the lens frame of the filter. The beneficial effect of the invention is that a unique cleaning and dustproof structure adopting air-blowing is designed and the functions of dustproof and decontamination can be effectively realized.
Owner:ZHE JIANG PEARMAIN ELECTRONICS
Electronic analyte assaying device
ActiveUS20060008896A1Bioreactor/fermenter combinationsBiological substance pretreatmentsAnalyteAssay
The invention is an electronically processed single-step test device for detecting the presence of a preselected analyte in a fluid. The device includes a hollow rectangular outer casing, disposed within co-joined upper and lower sections of the casing are assay material, an electronic processing system, and a LCD display. The LCD display is observable through a viewing window. The assay material is a sorptive material including a fluid sample application region in the form of a sample wick in fluid communication with a test strip. The test strip includes an analyte capture region adjacent to a light shield. The electronic processing system includes red and green LEDs which are alternately pulsed or energized over predetermined periods of time to determine if fluid test results show a marker or markers in the capture region indicative of the presence of a preselected analyte in the fluid. If so, Yes+ is displayed on the LCD. If not, No− is displayed on the LCD.
Owner:CHURCH & DWIGHT CO INC
Projector
InactiveUS7090360B2Easy to identifyIncrease in sizeTelevision system detailsProjector focusing arrangementCamera lensLens hood
Owner:SEIKO EPSON CORP
Dual laser beam guidance and parking device
InactiveUS20070046500A1Improve accuracySimple designDetection of traffic movementIndication of parksing free spacesVisibilityLens hood
A vehicle guidance and parking system that continuously guides the operator of a vehicle to a pre-determined parking position by using two laser beams impinging on a forward or rearward surface. The two lasers beams project to a substantially vertical surface to which a vertical line has been applied and the vehicle is guided by the operator such that the two laser beams are kept equidistantly horizontally centered around the line during the vehicle approach to maintain the correct lateral position in the pre-determined parking position. When the two laser beams converge on the vertical line, the vehicle is longitudinally positioned to the pre-determined parking position. Temperature compensation, due to the wide temperature of potential use range, is provided by the laser emitting device used in the vehicle guidance and parking system. A light blocking shroud is used around the vertical line in bright sunlight conditions when necessary to improve the visibility of the two laser beam outputs for vehicle maneuvering.
Owner:HERBERT WILLIAM J +2
Monitoring camera with a far infrared capability
InactiveUS20050146641A1Expand field of viewGreat visual distanceTelevision system detailsColor television detailsCamera lensLens hood
A monitoring camera with a far infrared capability has a cylindrical body (10), a lens hood (20), a luminous body (30) with multiple far infrared light emitting diodes (LEDs) and a lens cover (40). The lens hood (20) is a hollow cylinder and is divided into an inner segment and an enlarged outer segment (23) communicating with the inner segment. The enlarged outer portion (23) provides an enlarged compartment to hold a larger luminous body (30), which can hold more far infrared LEDs so the monitoring camera can see object at greater visual distances. Additionally, the field of vision the monitoring camera is also greater.
Owner:CHENG YI JEN
Pattern-variable headlamp
A pattern-variable headlamp includes a light source, a reflector, a movable shade that switches a position between a first position, a second position, and a third position to form a first light distribution pattern, a second light distribution pattern, and a third light distribution pattern, respectively, from the light reflected from the reflector, a projection lens that irradiates the light distribution pattern to a road surface, a first solenoid that moves the movable shade to switch from the first position to the second position, a second solenoid that moves the movable shade to switch from the first position to the third position, and an elastic returning unit that returns the movable shade to switch from the second position to either of the first position and the third position, or from the third position to the first position.
Owner:ICHIKOH IND LTD
Vehicular headlamp
InactiveUS20060164852A1Small sizeReduce weightVehicle headlampsPoint-like light sourceRotational axisLens hood
A vehicular headlamp including a light blocking moveable shade which is provided to rotate about a rotational axis line that extends in the width direction of a vehicle. The moveable shade is linked to an actuator via a link member and has an outwardly curved upper end edge that extends along the rear focal plane of a projection lens when the moveable shade is in the light shielding or light blocking position. The distance between the rotational axis line and a connection point of the moveable shade and the link member is set to be smaller than the distance between the rotational axis line and the upper end edge of the moveable shade, and the center of gravity of the moveable shade is positioned in the vicinity of the rotational axis line.
Owner:KOITO MFG CO LTD
Lateral light shield in backside illuminated imaging sensors
ActiveUS20130207212A1Made thinnerSolid-state devicesSemiconductor/solid-state device manufacturingSensor arrayLight sensing
A backside illuminated image sensor includes a semiconductor layer and a trench disposed in the semiconductor layer. The semiconductor layer has a frontside surface and a backside surface. The semiconductor layer includes a light sensing element of a pixel array disposed in a sensor array region of the semiconductor layer. The pixel array is positioned to receive external incoming light through the backside surface of the semiconductor layer. The semiconductor layer also includes a light emitting element disposed in a periphery circuit region of the semiconductor layer external to the sensor array region. The trench is disposed in the semiconductor layer between the light sensing element and the light emitting element. The trench is positioned to impede a light path between the light emitting element and the light sensing element when the light path is internal to the semiconductor layer.
Owner:OMNIVISION TECH INC
Thermally assisted magnetic head with optical waveguide and light shield
ActiveUS20090052077A1Good yieldEffective lightingRecord information storageRecording/reproducing/erasing methodsHigh densityLens hood
A thermally assisted magnetic head which can realize high-density writing onto magnetic recording media is provided.The thermally assisted magnetic head includes a magnetic head part having a medium-opposing surface and a back face opposing the medium-opposing surface. The magnetic head part has a recording head part, an optical waveguide, and light shields. The optical waveguide extends along the opposing direction of the medium-opposing surface and back face. Each of the light shields extends along the opposing direction of the medium-opposing surface and back face and inhibits laser light from passing between the medium-opposing surface and back face. The optical waveguide and light shields are arranged on a first line when seen from the back face. When seen from the back face, the light shields oppose each other while interposing the first line therebetween and are arranged on a second line substantially orthogonal to the first line.
Owner:TDK CORPARATION
Concentrated Solar Photovoltaic Module With Protective Light Shielding
ActiveUS20090260674A1Avoid shortingReduce heatPV power plantsPhotovoltaic energy generationLight guideLens hood
Owner:OPEL SOLAR INC
LED device with an active heat-dissipation device
InactiveUS20070091622A1Heat dissipationReduce the temperaturePoint-like light sourceLighting heating/cooling arrangementsLens hoodEngineering
A light-emitting diode (LED) device has a shade, an active heat-dissipation device and an LED module. The shade has a cavity. The active heat-dissipation device is mounted in the cavity in the shade and has a cooling board, an evaporator, a condenser, a compressor, an expansion valve and a refrigerant. The evaporator, condenser, compressor and expansion valve connect to each other to form a loop. The refrigerant is set in the loop. The LED module is mounted to the active heat-dissipation device and has at least one LED. The active heat-dissipation device dissipates the heat from the LED and even lowers the temperature of the LED under ambient temperature,
Owner:L& C LIGHTING TECH
Large field-of-view stray light PST (point source transmittance) testing method and device
ActiveCN102749184AGuaranteed clear imagingAssessment of stray light suppression abilityTesting optical propertiesData acquisitionHandling system
The invention relates to a large field-of-view stray light PST (point source transmittance) testing method and a large field-of-view stray light PST testing device. The large field-of-view stray light PST testing device comprises a large dynamic range light source, a collimator, a clean room, a high-load turntable, an EMCCCD (electron multiplying charge coupled device) and a data acquisition and processing system, wherein the collimator is arranged on the path of emergent light of the large dynamic range light source; the EMCCD is arranged on the high-load turntable and is electrically connected with the data acquisition and processing system; the large dynamic range light source is electrically connected with the data acquisition and processing system; the high-load turntable is arranged on the path of emergent light after passing through the collimator; and the large dynamic range light source, the collimator, the high-load turntable, the EMCCD and the data acquisition and processing system are arranged in the clean room. The large field-of-view stray light PST testing method and the large field-of-view stray light PST testing device provided by the invention have the advantages that the stray light inhibiting ability of the lens hood of a astronautic camera can be effectively evaluated on the ground, the signal-to-noise ratio of the entire camera can be estimated, the astronautic camera can be guaranteed to pick up clear images after the astronautic camera is launched into the sky, the field of view is ultralarge and the accuracy is high.
Owner:XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
Lamp unit of vehicular headlamp
InactiveUS20080239745A1Amount of lightReduce the amount requiredVehicle headlampsPoint-like light sourceLens hoodOptical axis
A lamp unit of a vehicular headlamp includes a projection lens with an optical axis; a light source formed from a semiconductor light-emitting element; a first reflector that reflects light from the light source so as to condense such light on or near the optical axis; and a shade positioned between the light source and the projection lens so as to extend along the optical axis direction. The shade shields part of the light reflected by the first reflector. In the lamp unit of the vehicular headlamp, a shielding surface extends rearward from a front end of the shade, where the shade is positioned near a rearward focal point Rf of the projection lens. The shielding surfaces serve as a second reflector that reflects light from the first reflector toward the projection lens. In addition, a transparent portion is formed on part of the second reflector such that part of the light reflected by the first reflector passes downward of the rearward focal point of the projection lens and is then incident to the projection lens.
Owner:KOITO MFG CO LTD
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