161results about How to "Increase light source" patented technology

A light source apparatus which is improved in the efficiency of light emission thus to increase the operating life and the mechanical strength and a method of producing the same are provided. The light source apparatus 1 comprises a radiator plate 3 having thermally conductive properties, an insulating member 4 coupled to at least one side of the radiator plate 3 and having a through hole 6 provided in the side thereof facing the radiator plate 3, an LED chip 2 installed and thermally coupled to an exposed portion of the radiator plate 3 facing the through hole 6, an extension 4a inwardly projecting at the hole 6 from the radiator plate 3 end of the insulating member 4, a wiring pattern 8 provided on the insulating member 4 and electrically isolated by the insulating member 4 from the radiator plate 3, bonding wires 9 electrically connecting between portions of the wiring pattern 8 extended to the extension 4a and the electrodes of the LED chip 2, and a light-transmissive sealing material 10 filled in the through hole 6 for entirely encapsulating the LED chip 2 and the bonding wires 9.

The index of refraction of a light guide (6) for transmitting light outputted from a primary light source (1) is ng, and the light guide (6) has a light input end face (9), a light output surface from which the transmitted light is outputted, and a back surface opposed to the light output surface. A leaky ray modulator (8) is provided to at least either the light output surface or the back surface. The leaky ray modulator (8) has a composite layer (50) provided on the light output surface or the back surface and composed of first refractive index regions (3) having a refractive index n1 (ng>n1) and second refractive index regions (4) having a refractive index n2 (n2>n1) and a third refractive index layer (5) provided on the composite layer (50) and having a refractive index n3 (n3>n1). A reflecting plate (7) is provided adjacent to the back surface of the light guide (6).

A light source module of scanning device includes a light guide rod and a light emitting diode. The light guide rod has a top surface, a bottom surface and two end portions. The top surface and the bottom surface are disposed opposite to each other. The light emitting diode is disposed adjacent to one of the end portions.

A cost effective illumination control system calculating motion and daylight or surrounding light inputs, particularly in large structures where the light distribution is not uniform across time. The system divides the structure into zones each having input capability with regard to occupation and background light levels. Each zone being able to make independent decisions with regard to control of lighting levels in the zone, yet the zones being able to cooperate in a coordinated fashion to provide uniform lighting to the structure as a whole.

A light source module including a light emitting unit for emitting a light beam, a light guiding plate, and a light coupling unit is provided. The light guiding plate has a first light emitting surface, a first bottom surface, and a first light incident surface, wherein the first light emitting surface is opposite to the first bottom surface, and the first light incident surface connects the first light emitting surface and the first bottom surface. The light coupling unit has a second light incident surface and a second light emitting surface in contact with the first light incident surface. The light emitting unit is disposed beside the second light incident surface. The light beam enters the light coupling unit through the second light incident surface, exits the light coupling unit through the second light emitting surface, and then enters the light guiding plate through the first light incident surface.

[Purpose] To provide a surface illumination fixture using a point light source having strong directivity.

[Constitution] In the surface illumination fixture 3 including a surface illumination light-source device 6 converting light from a plurality of point light sources 36 having strong directivity into surface illumination and an illumination fixture main body 41, the surface illumination light-source device 6 includes a casing 30 having a flat plate part 35 being used to attach the surface illumination light-source device to the illumination fixture main body, lateral plate parts standing from the flat plate part, and an opening on a surface opposite to the flat plate part, and includes a light-guide reflection plate covering the opening. The flat plate part 35, the lateral plate parts 32 and 33, and the light-guide reflection plate 40 are formed by members having a high light reflectance and a low light transmittance. The light-guide reflection plate 40 is formed to have a lower light reflectance and a higher light transmittance as the distance from the corresponding point light source increases. The illumination fixture main body 41 having attaching means for attachment to a ceiling or a wall.

A Chip on Board (COB) package which can reduce the manufacturing costs by using a general PCB as a substrate, increase a heat radiation effect from a light source, thereby realizing a high quality light source at low costs, and a manufacturing method thereof. The COB package includes a board-like substrate with a circuit printed on a surface thereof, the substrate having a through hole. The package also includes a light source positioned in the through hole and including a submount and a dome structure made of resin, covering and fixing the light source to the substrate. The invention allows a good heat radiation effect by using the general PCB as the substrate, enabling manufacture of a high quality COB package at low costs. This in turn improves emission efficiency of the light source, ultimately realizing a high quality light source.

An optical packaged body capable of preventing generation of a wrinkle, deflection, and warpage, capable of being thinned is provided. The optical package body includes a support medium and a packaging film that covers the support medium in a state of being applied with shrinkage force. The packaging film has an optical function section that acts on light from a light source in at least one of a first region into which the light from the light source enters and a second region from which the light from the light source is emitted after passing through the optical packaged body when the light source is arranged on one face side of the optical packaged body.

The invention relates to an assembly for sterilizing surfaces and lumens of a medical device with a light source. The light source can emit light that reduces the number of or removes micro organisms from the lumen and/or surfaces of the medical device. The invention relates to an assembly comprising—a medical device for transporting fluids having a lumen and a first connector part, and—at least one light source configured to emit light having bactericidal effect which light source has a corresponding second connector part, and comprises an optical window being transparent for light from the light source allowing the light to the inlet of the lumen of the medical device and protecting the light source from liquid gaining access to the light source,—a separate non-transparent unit being provided with a first coupling part and a second coupling part, where the first coupling part of the separate non-transparent unit during use is joined to the corresponding connector part (5) of the light source and the second coupling part during use is joined to the connector part of the medical device. The first connector part of the medical device and the second corresponding connector part of the light source via the non-transparent unit can be joined such that the light source is placed outside and in extension of the lumen of the medical device before exposure to light.

A light-emitting heat-dissipating device includes at least one light-emitting chip and a circuit board. The circuit board has at least one recess and at least one thermally conducting element disposed in the recess. The light-emitting chip is disposed on the thermally conducting element and connected to the circuit board via contact pads electrically connected to a circuit layout of the circuit board. In addition, the light-emitting chip is package by a filler on the circuit board. A packaging method of the light-emitting heat-dissipating device is also disclosed.

A vehicular lamp includes a light source, and a light guide body having a front surface and a rear surface, configured to allow light emitted from the light source to enter from the rear surface and to exit through the front surface. The rear surface of the light guide body comprises, in a first plane extending in a front-to-rear direction, a first entrance portion configured to allow light emitted from the light source to enter in such a way as to be refracted to the front, second entrance portions situated at both sides of the first entrance portion and configured to allow light emitted from the light source to enter in such a way as to be refracted sideways, and reflecting portions configured to internally reflect light from the light source which enters from the second entrance portions to the front.

Color correction matrix determining method and apparatus and image photographing method and apparatus are used in a color processing system that converts input image data into output image data and has two color correction matrixes that are a first matrix and a second matrix, with a white balance correction circuit being sandwiched between the first matrix and the second matrix. The color correction matrix determining method and apparatus input a light source range and determines the first matrix based on this inputted light source range on the occasion of determining the color correction matrix in the color processing system. The image photographing method and apparatus discriminates a photographing light source range and determines the first matrix based on the discriminated photographing light source range.

A projection type image display apparatus using a light source where excitatory light makes fluorescent material to emit fluorescent light is provided with improved lifetime of a fluorescent material light source without increasing in the apparatus size, The apparatus comprises an excitatory light source cluster, a substrate on which fluorescent material is arranged, light intensity detectors measuring the intensities of the excitatory light and the fluorescent light, a control device which judges based on the measured values of the light intensity detectors whether or not to move the substrate, and a motion device which moves the substrate. The control device may issue an instruction to move the substrate when the ratio of the decrease in the fluorescent light intensity to that in the excitatory light intensity exceeds a prescribed value. Also, the substrate may be moved in a direction perpendicular to the direction of the excitatory light optical axis.

A light guide plate includes an incident plane for receiving a light source of a light emitting device, a bottom surface connected to the incident plane, and an emergent plane corresponding to the bottom surface for outputting the light source of the light emitting device, and the light emitting device is installed on one side of the incident plane of the light guide plate; wherein the incident plane of the light guide plate has a structure consisted of a plurality of polyhedrons, such that an incident light of the light emitting device passes through the polyhedron structure to improve the light diffusion effect and make the light produced by the light emitting device evenly diffused towards the emergent plane of the light guide plate.

A liquid crystal display (LCD) includes a back bezel, a light guide plate (LGP) having a light incident surface opposite to a first side wall of the back bezel, an LCD panel disposed above the LGP, a frame and a light source unit. There is an accommodation space between the first side wall of the back bezel and the light incident surface of the LGP. The frame is assembled with the back bezel to fix and surround the LGP and the LCD panel. A portion of the frame extends across the upper side of the accommodation space. A portion of the second side wall of the frame is opposite to the entrance side of the accommodation space and has a first securing portion. The light source unit has a second securing portion. When the light source unit is mounted/attached into the accommodation space, the second securing portion is jointed the first securing portion to secure the light source unit.

A light assembly includes a portable lamp unit that functions alone as a light source or may be combined with a base unit for permanent or temporary attachment to a surface. The lamp unit has a light transmitting means, a power source, and an operating means that together provide a portable light source. When associated with the base unit, the lamp unit becomes removably retained in the base unit, providing for use of the lamp unit at a fixed location, while remaining easily removable for portable use.

An optical absorption gas sensor comprising a body having an internal wall which defines a chamber, at least one aperture in the body through which a gas sample can enter the chamber, a light source, at least one reflector, a detector assembly which extends into the chamber and has a first side and an opposite second side, a detector which measures light which is incident at at least a range of angles on at least a part of a first surface of the detector assembly on the first side of the detector assembly, wherein the light source is located within the chamber on the second side of the detector assembly, the whole being configured such that light from the light source passes through the gas sample and is reflected around the detector assembly, by the at least one reflector, onto the detector.

A projection display apparatus 100 including a plurality of solid state light sources 11 includes: a sensor 70 detecting an amount of light emitted from the plurality of solid state light sources 11; a degradation rate calculating unit 250 acquiring, from the amount of light detected by the sensor 70, an amount of light emitted from a measurement target light source which is any one of the plurality of solid state light sources: and a light source controlling unit 240 controlling, for each of the plurality of state light sources 11, emission periods in which the plurality of solid state light sources 11 emit light so that the degradation rate calculating unit 250 acquires the amount of light emitted from the measurement target light

A portable light (10) has a housing (12). The housing (12) has at least one metallic area (14) capable of attracting a magnet, a magnet (16) operatively associated with the at least one metallic area (14) via magnetic attraction, a sub-assembly (18) within the housing (12) comprised of a light source (20), a power supply (22) including at least one battery (22a) for illuminating the light source (20) and a switch (24) for connecting the power supply to the light source. A removable cover (26) is attached to the housing (12).

The invention concerns a lighting and/or signalling device for a motor vehicle comprising at least one light source emitting a light beam and at least one optical guide in which the light beam propagates, said optical guide comprising an output face for the light beam, and another reflection face, opposite to the output face, having a serrated profile forming a reflection face for the light beam, notably comprising a series of prisms, each prism forming, with the following prism (8), a bottom angle (D). At least one bottom angle of the reflection face is truncated, and/or in that the output face has a profile comprising flutes.

Disclosed are an illumination device capable of improving an optical efficiency of a light generated from a light source and a reflection type liquid crystal device using the, illumination device. Between at least one light source and a first light guiding plate, which is provided to uniformly project the light incident from a first side towards a second side, a second light guiding plate for projecting the incident light towards the first side of the first light guiding plate is provided. A distance between a light projecting portion of the second light guiding plate and a light reflecting portion opposite the light projecting portion becomes narrow as an amount of light flux of the light emitted from at least one light source decreases. Accordingly, the light efficiency can be improved by increasing the probability of variation in optical routes for the light generated from each light source, though the number of the light sources disposed at a side of the second light guiding plate is increased.

To maintain the shape of the projection on the electrodes of the tip end for a long time to extend the lifetime of a discharge lamp, a lighting device lighting a high pressure discharge lamp supplies alternating current such that an alternating current with a basic frequency at the time of the steady state lighting selected from a range between 60 and 1000 Hz and a low frequency of a half cycle with a frequency lower than the basic frequency are generated alternatingly. The alternating current is supplied such that the waveform with one polarity of the low frequency appears consecutively at least twice. It is also possible for the alternately generated low frequency to be lower than the basic frequency in a range from 5 to 200 Hz, and for the interval during which the basic frequency is supplied to be gradually increased and decreased at specified times.