278results about How to "Uniform light distribution" patented technology

A method and apparatus is described for treating a target body surface using a radiation applicator. The therapeutic treatment apparatus adapted to conform to a patients body. The treatment apparatus comprises a plurality of light sources coupled with a flexible substrate, a light integrator in at least a portion of the optical path between the light source and the patient's body surface, a power supply, and a controller.

Disclosed herein are embodiments of LED-based lights for use in fluorescent fixtures that emanate light in a plurality of directions. One embodiment disclosed herein of an LED light for use in a fluorescent light fixture comprises a housing and a circuit board having a first surface configured to face an illumination area, the circuit board mounted in the housing and defining a plane conceptually dividing the housing into a first portion and a second portion. At least one LED is mounted on the first surface of the circuit board and is configured to emanate light in a first direction. Light distribution means is configured to distribute a portion of the light emanated in the first direction to at least a second direction different than the first direction.

A data symbol reading apparatus, for reading an encoded data symbol, includes: an image pickup element; an image forming optical system for forming an image of the encoded data symbol located within a symbol read area onto a light-receiving surface of the image pickup element; and an illumination system. The illumination system includes a plurality of light sources, a diffusion plate for diffusing light emitted from the light sources, and a lens member for transmitting diffused light diffused by the diffusion plate onto the symbol read area. The plurality of light sources, the diffusion plate, and the lens member are arranged such that a light distribution within the symbol reading area is almost uniform.

In the centers of each of unit-type lenses that constitute a lens, a plurality of elliptically light distributing LEDs being arranged circularly in a horizontal direction in such a way that a wider divergence angle of each LED is set to be oriented horizontally. The unit-type lenses are stacked and fastened by a screw that runs through the bosses of the unit-type lenses.

The acne treatment devices use an array of LEDs, which emit monochromatic light substantially at a wavelength of 405 nanometers, which is coincident with the peak absorbance of light by acne porphyrins. The emitted light is directed from the light source to an acne area of the skin. The device can either be hand-held, with the LEDs mounted on a handle portion, or an LED can be mounted on a patch-like mounting element, which is adapted to be secured to the skin for longer exposure at less intensity.

In an actively illuminated imaging system, illumination of a segmented scene is synchronized with an image sensing period. A scene is segmented into a plurality of scene portions utilizing a segmented lens. In an aspect, a first scene portion is illuminated when an imager is actively collecting photogenerated charge from the first scene portion, and a second scene portion is illuminated when an imager is actively collecting photogenerated charge from the second scene portion. The sensitivity of an image sensor is maximized, while simultaneously minimizing the amount of light that must be supplied to illuminate a scene. An irradiance pattern is varied allowing a more uniform distribution of light. Bands of varying wavelength, polarization, and light intensity may be variously applied to illuminate individual scene segments, as needed to enhance an identification of an object in the scene. The present invention is particularly useful with high frame rate imaging systems.

Disclosed herein are embodiments of LED-based lights for use in fluorescent fixtures that emanate light in a plurality of directions. One embodiment disclosed herein of an LED light for use in a fluorescent light fixture comprises a housing and a circuit board having a first surface configured to face an illumination area, the circuit board mounted in the housing and defining a plane conceptually dividing the housing into a first portion and a second portion. At least one LED is mounted on the first surface of the circuit board and is configured to emanate light in a first direction. Light distribution means is configured to distribute a portion of the light emanated in the first direction to at least a second direction different than the first direction.

The invention described herein is a very thin flat panel LED luminaire, including a flat baseboard, a flat reflection panel, a flat acrylic panel, a flat diffusion panel, LED bar, and aluminum encasement frame which combines with the baseboard to form the chassis for the luminaire. The LED bar is placed along either or both sides of the stack. The acrylic panel is printed with a mesh-like mask pattern of dots in a pattern in which the density of the pattern is decreases the farther away from the LED bar the pattern is, differentially coupling the light from the point source LED bar from the reflection panel into the flat acrylic panel so that illumination across the luminaire is substantially uniform.

The disclosed subject matter includes an LED lighting unit that uses a light guide, and a thin vehicle lamp using the light guide and which can conform to light distribution standards for vehicle lamps. The LED lighting unit can include a light guide having one flat surface formed with many light diffusing patterns, a plurality of LEDs located along one end surface of the light guide, and a reflection board including a reflector located on a bend portion thereof. The reflection board can be located adjacent and extend along the one flat surface of the light guide. The one flat surface can form a large light distribution area with a uniform brightness. The reflector located at the bend portion of the reflection board can form a narrow light distribution having a maximum brightness at a central portion. Thus, the LED light unit can conform to optical characteristics for a vehicle lamp. A vehicle lamp using the above-described LED light unit can be relatively thin.

A system and method relates to electronic adaptive front-lighting of a vehicle, including at least one fixed solid state light source. The fixed solid state light source is configured to illuminate a front peripheral region of a vehicle. In addition, the fixed solid state light source is integrated with a daytime running light module of the vehicle.

A method of controlling the spread of an infectious microorganism, for example methicillin-resistant Staphylococcus aureus (“MRSA”) in a group of subjects including people asymptomatic for infection with the microorganism. A dose of microorganism-reducing light can be applied to each anterior nasal cavity of each subject in the group. Optionally a colorant can be applied to the anterior nasal cavity to sensitize any infectious microorganisms present to the microorganism-reducing light. A light applicator system having a hollow light-transmissive nasal dilator insertable into a nostril and a light output member accommodatable in the hollow interior of the nasal dilator can be employed, optionally with a light diffuser around the light output member. One example of light applicator system comprises a hand piece removably attachable to an optical fiber coupled to a light source, the optical fiber constituting the light member.

The present invention provides a backlight module, which at least includes: a light guide plate having a plurality of V-cuts on both sides, in which the valley line of the V cut extends as a straight line and the valley lines of the V cuts on the same side of the light guide plate are parallel to each other, while the valley lines of the V cuts on the different sides of the light guide plate are non-parallel to each other; a reflective film disposed on the lower side of the light guide plate; at least a light source disposed around the light guide plate; and a single optical film disposed on the upper side of the light guide plate, in which the optical film includes a substrate and a plurality of light-adjusting structures.The present invention provides a backlight module combining an optical film having a light-adjusting structure to alter the light field and a double V-cut light guide plate, which can provide highly uniform light and a broad visual angle and thus cure the defects in the conventional double V-cut light guide plate.

The invention described herein is a very thin flat panel LED luminaire, including a flat baseboard, a flat reflection panel, a flat acrylic panel, a flat diffusion panel, LED bar, and aluminum encasement frame which combines with the baseboard to form the chassis for the luminaire. The LED bar is placed along either or both sides of the stack. The acrylic panel is printed with a mesh-like mask pattern of dots in a pattern in which the density of the pattern is decreases the farther away from the LED bar the pattern is, differentially coupling the light from the point source LED bar from the reflection panel into the flat acrylic panel so that illumination across the luminaire is substantially uniform.

An exposure head is provided in which light beams from light emitting parts 63 pass through a transparent substrate 62 and are projected on an image carrier. The transparent substrate 62 has plain faces substantially parallel to each other, one of the faces being a face on which the light emitting parts 63 are formed and the other being a face from which light beams are projected. The transparent substrate 62 is provided, at position(s) other than the face on which the light emitting parts 63 are formed and than the face from which light beams are projected, with light quantity detecting means 100 for detecting the quantity of light emitted from said light emitting parts 63. In the exposure head in which the light emitting parts of organic EL light emitting elements are aligned into array configuration on the transparent substrate, the light quantity detecting means is disposed on an end face of the transparent substrate and light beams totally reflected at the projection-side face of the transparent substrate are introduced to the light quantity detecting means, thereby effectively detecting the quantity of light of the light emitting elements and thus providing improved accuracy of detecting the quantity of light.

The invention discloses a method and system for displaying parts of bodies of experiencers in VR environment. The method comprises the following steps of: carrying out live broadcast on a flow at a VR scene, and collecting panoramic signals and omnibearing audio of the scene to carry out real-time splicing processing; coding and publishing the spliced panoramic signals; and receiving and decoding the live broadcasted panoramic signals by a far-end reception server through network transmission, carrying out real-time image matting processing on dedicated shooting signals, realizing rendering and synthesis of the panoramic signals and the dedicated shooting signals, and outputting the rendered and synthesized signals to a VR display terminal. After the VR display terminal is worn by an experiencer, the parts of the body of the experiencer can be seen besides the fact that the experiencer is placed in a 360-degree omnibearing scene environment. Through changing the position and angle of the worn VR display terminal, the images in the view of the experiencer change, so that the experiencer can see the omnibearing pictures of the scene and immersive feeling is brought to the experiencer.

A lens for an LED street lamp has an external curved surface that has a concave surface portion on one side thereof. A back surface of the lens has a micro-prism array and retainer feet. A recess in the back surface receives an LED light source. The outer surface of the lens has facets or windows that provide overlapping projections of light from adjacent facets. The lens is generally cushion shaped with an indentation at one side. The lens directs light in an asymmetrical distribution transverse to the lens and to direct light symmetrically over a wide area in a longitudinal direction of the lens.

In an actively illuminated imaging system, illumination of a segmented scene is synchronized with an image sensing period. A scene is segmented into a plurality of scene portions utilizing a segmented lens. In an aspect, a first scene portion is illuminated when an imager is actively collecting photogenerated charge from the first scene portion, and a second scene portion is illuminated when an imager is actively collecting photogenerated charge from the second scene portion. The sensitivity of an image sensor is maximized, while simultaneously minimizing the amount of light that must be supplied to illuminate a scene. An irradiance pattern is varied allowing a more uniform distribution of light. Bands of varying wavelength, polarization, and light intensity may be variously applied to illuminate individual scene segments, as needed to enhance an identification of an object in the scene. The present invention is particularly useful with high frame rate imaging systems.

The process for analyzing an ovine animal carcase comprises capturing an image of a dorsal view to generate color image data for the carcase (10). Predetermined anatomical points (21–24) of the carcase are identified to then derive dimensional measurements for the carcase. Also characterizing parameters such as yield and fat depth of the carcase are derived by processing color data included in the captured image data in conjunction with the derived dimensional measurements. The color data processed are the color data for predetermined selected surface areas, especially the chump, the loin and the shoulder areas (30–32) of the carcase (10) known or determined to have significant correlation to the characterizing parameter related to fatness. Desirably the tail (17) of the animal carcase is identified and its width determined since this is useful as a variable in a carcase yield predictive equation. The color data comprises average RGB values representing red, green and blue color components which are intensity normalized color values.

The invention provides a single-ended halogen lamp with a supporting frame locating hook. The single-ended halogen lamp with the supporting frame locating hook comprises a lamp filament supporting frame, molybdenum sheets, a bulb shell and a lamp filament, wherein a molybdenum pin is welded to each molybdenum sheet, the lamp filament supporting frame, the molybdenum sheets and the lamp filament are respectively placed in the bulb shell. The number of the molybdenum sheets is two and the two molybdenum sheets are located in the clamping flat positions of the bulb shell. The molybdenum pin of each molybdenum sheet extends out of the bulb shell. One end of the lamp filament supporting frame is bended in the width direction of the bulb shell, so that a lamp filament hook used for supporting the lam filament is formed. One end of the lamp filament is hung on the lamp filament hook, and the other end of the lamp filament is downwards welded to one molybdenum sheet. The other end of the lamp filament supporting frame is welded to the other molybdenum sheet. The end, welded to the other molybdenum sheet, of the lamp filament supporting frame is bended in the welding portion between the end and the molybdenum sheet in the width direction of the bulb shell, so that the locating hook is formed. The locating hook and the lamp filament are on the same plane. By the adoption of the locating hook, after the lamp filament supporting frame is welded to one molybdenum sheet and clamped to the bulb shell in a sealed mode, the lamp filament hook and the lamp filament are both located in the middle of the thickness of the bulb shell. The single-ended halogen lamp with the supporting frame locating hook has the advantages of being stable in production process, high in quality uniformity, even in light distribution, long in service life and the like.

A lighting device includes a cover portion configured to have a hinged connection for mounting on a housing. The cover portion includes a light emitting diode (LED) and a mixing chamber having a reflective internal surface for receiving light from the LED. A phosphorescent lens is disposed opposite the LED and is configured to reflect light from the LED back to the mixing chamber and to emanate absorbed light from the lens to a surrounding region outside of the mixing chamber. An LED driver circuit is configured to power the LED, the LED driver circuit being electrically connected to a power source. Other embodiments are also disclosed.

A tubular lighting device comprising an elongated heat sink (3), at least one light source (5) mounted on the elongated heat sink (3), and an elongated hollow tubular member (7) with a first and a second end arranged along the elongated heat sink (3). The tubular member (7) comprises a lens (15) and a light exit surface (9). The light exit surface is located in front of the lens (15) and the light exit surface (9) have at least one diffusing portion (11) with a transparent portion on each side of each diffusing portion. The at least one diffusing portion (11) covers an area on the light exit surface (9) corresponding to a light distribution of said lens (15) projected on the light exit surface (9), such that all light is directed by said lens (15) onto the at least one diffusing portion (11).

The disclosed subject matter includes an LED lighting unit that uses a light guide, and a thin vehicle lamp using the light guide and which can conform to light distribution standards for vehicle lamps. The LED lighting unit can include a light guide having one flat surface formed with many light diffusing patterns, a plurality of LEDs located along one end surface of the light guide, and a reflection board including a reflector located on a bend portion thereof. The reflection board can be located adjacent and extend along the one flat surface of the light guide. The one flat surface can form a large light distribution area with a uniform brightness. The reflector located at the bend portion of the reflection board can form a narrow light distribution having a maximum brightness at a central portion. Thus, the LED light unit can conform to optical characteristics for a vehicle lamp. A vehicle lamp using the above-described LED light unit can be relatively thin.

A projector has a transmissive spatial light modulator backlit by a collimated illuminator that includes a light source that outputs red, green, blue (RGB) light, and a combiner disposed in light-receiving relation to the light source for mixing or combining the RGB light. The combiner has cavity features associated therewith for outputting collimated light, where such light preferably has a divergent cone angle less than plus or minus fifteen degrees (+ / −15°).

The present invention expands the beams of gaussian distribution laser beams output by a laser through a light beam expander, then uses a light beam homogenizer to convert the laser beams with spatial energy in gaussian distribution into the laser beams with spatial energy in flat top distribution, and finally uses optical fiber beam splitters to execute multi-channel light distribution to homogenized laser. Adjusting the optical fiber length of each optical fiber beam splitter can control the phase output by each laser beam, so as to make the output laser beams inphase and synchronous. The present invention solves the technical problems that the prior art is huge in volume, high in cost, less in light path numbers, inconvenient to guide light beam direction, short in transmission distance and inapplicable to high-power laser occasions. The present invention is uniform in light distribution, optional in laser output positions, flexible and convenient to use, and capable of realizing hundreds or thousands of channels of the output phase uniform in energy or the laser output with fixed phase delay. The present invention can be used for high-power laser continuous type and pulse type laser light beam distribution and combination, and is especially applicable to the fields such as national defense electronic countermeasure and target recognition.

The invention discloses a liquid crystal display and a light guide plate thereof. The light guide plate has a light leaving surface and a light incident surface; a microstructure module is arranged on the light leaving surface in a direction that the microstructure module directly faces the light incident surface; the microstructure module comprises a plurality of alternately arranged conical microstructures; and one end of each microstructure is narrower than the other end of the microstructure. The line connecting the end point of one end of each microstructure is a curve, and the line connecting the end point of the other end of each microstructure is a straight line or a curve.

A diffusion plate for use with a lighting module is provided. The diffusion plate includes a substrate, a plurality of circular diffusion structures, and at least one star diffusion structure. The circular diffusion structures are disposed on one face of the substrate in array. Each circular diffusion structure includes a plurality of first partial reflecting units. The first partial reflecting units are disposed on the substrate in circular distribution. The outer arcs of adjacent circular diffusion structures together form a star region. The at least one star diffusion structure includes a plurality of second partial reflecting units. The second partial reflecting units are disposed in the star region on the face of the substrate, wherein the second partial reflecting units are distributed in star distribution.

A luminaire capable of providing desirably uniform up-lighting when suspended from above, or mounted from below, or similarly uniform wall lighting when mounted as a sconce, having a longitudinally extended tapered hollow shell body which is open in the direction of intended illumination, a lamp mounting assembly, a fixture mounting assembly, and a louver assembly which is positioned between a lamp mounted in the fixture and the surface to be illuminated. The louver assembly is an integral unit having a supporting member which carries longitudinally spaced light-transmissive louvers which project from the body opening toward the illuminated surface. Each louver is formed of a partial disk which may be arcuate (e.g. semi-circular or semi-elliptical) or polygonal, and may have a beveled peripheral surface. The louver assembly is designed to produce the desired uniform illumination.

One or more embodiments of the present invention provide apparatuses, methods and systems to form a thin LED backlight unit for a large-screen flat-panel display. The backlight unit is able to achieve improved color mixing within a shorter mixing distance than the conventional art, while maintaining desired brightness uniformity, thereby allowing for a shorter bezel of a display device. One or more embodiments of the present invention include one or more light guides, which, by operating together, provide thin backlight units. High system efficiency is provided by introducing a recycling enhancement component, and uniform color distribution is achieved by incorporating color shift compensation. Multiple light guides are arranged adjacent to one another can offer a progressive scan illumination feature.

Disclosed arm an optical display device producing uniform light distribution and a method of fabricating such devices. The optical display device has waveguides arranged in vertical and horizontal directions. The waveguide has a conical shape whose cross-section decreases towards the light-projection side thereof. At least one of the size, height, spacing, and refraction index of the waveguide is designed to be different for each section, depending on an incident angle and / or intensity of light inputted from a light source. Therefore, the intensity of projected light can be made uniform over all sections of the optical device.