Abstract: A direct-type backlight unit for a flat panel liquid crystal display includesat least one lamp installed in a housing, a diffusion plate installed above the lamp, a reflection plate having a reflection surface and a back surface installed under the lamp for reflecting light generated by the lamp from the reflection surface to the diffusion plate, and the reflection plate having at least one aperture thereon, and a heat dissipating plate combined with the back surface of the reflection plate.

Abstract: A plurality of minute lenticular elements made of a light-transmissible material and each having a substantially plano-convex cross section are formed on a major surface of a light conductive plate opposite to another major surface provided with a light reflection pattern, and are arranged radially with respect to a spot-like light source with their respective longitudinal directions oriented perpendicular to grooves of the light reflection pattern. Light rays guided in the lenticular element from its bottom surfaces are spread in a circumferential direction of its outer curved surfaces. A view field angle can be increased by the lenticular element in a direction tangential to the grooves improving view field angle distribution.

Abstract: A luminaire is provided which includes a light source, a light guide that receives light radiating from the light source, and a plurality of prisms adjacent the light guide that redirect the light from the light guide substantially perpendicular to a longitudinal axis of the light guide. The prism angles, in one embodiment, are 25°-90°-65°. The fine pitch prism arrays preferably alternate or flip-flop every few millimeters, for example, one to two millimeters to create the visual appearance of bright and dark bands which cause the structure to appear like macro prisms.

Abstract: A light source device having a light guide (3) for guiding light emitted from a primary light source and emitting light obliquely from a light emission face (33) thereof, and a light deflecting device (4) disposed so as to be adjacent to the light emission face. Plural elongated prisms are arranged in parallel to one another at a light incident surface (41) of the light deflecting device. Virtual elongated prisms (I) each having a vertical angle ? of 50 to 70° arranged in the same arrangement pitch as the elongated prisms are assumed so that the peak emission light in the light emission distribution of light emitted from the light emission face is incident on one virtual prism face of the virtual elongated prism, internally totally reflected by another virtual prism face and then emitted in a desired direction from a light emission surface (42) of the light deflecting device.

Abstract: In a plane light source unit, a light pipe including an upper surface, a lower surface, and an incidence side surface, and including a light output means formed in the upper surface so that light incident on the incidence side surface exits from the lower surface through the light output means while light incident on the lower surface is transmitted through the upper surface; and a linear light source disposed on the incidence side surface of the light pipe, the linear light source having an effective light emission region which is longer than the longitudinal length of the incidence side surface. Information light generated on the lower surface of the light pipe is transmitted and made visible through the upper surface of the light pipe. Further provided is a reflection type liquid-crystal display device in which a liquid-crystal cell is disposed on a lower surface of the above-mentioned plane light source unit, the liquid-crystal cell including a reflection layer.

Abstract: A lighting panel device has a light source, a lighting panel receiving light from the light source at an end face, and a prism sheet provided above the lighting panel. The lighting panel has a bottom reflector face, and the prism sheet has a plurality of prisms arranged in a longitudinal direction of the prism sheet. Each of the prisms has a sectional shape of a triangle. A vertex of the triangle is between 30° and 25°.

Abstract: A luminaire is provided which includes a light source, a light guide that receives light radiating from the light source, and a plurality of prisms adjacent the light guide that redirect the light from the light guide substantially perpendicular to a longitudinal axis of the light guide. The prism angles, in one embodiment, are 25°-90°-65°. The fine pitch prism arrays preferably alternate or flip-flop every few millimeters, for example, one to two millimeters to create the visual appearance of bright and dark bands which cause the structure to appear like macro prisms.

Abstract: A multi-directional decorative lighting equipment is disclosed. The lighting equipment is composed of a lighting unit and a reflector plate. The lighting unit further includes conductors, a lamp holder, and a lighting element, wherein the lighting element is installed and fixed on the lamp holder, and connected to the power source with the conductors. The reflector plate is fixed to the lamp holder and forms a prescribed angle with lamp element so as to perform multi-directional reflection effect. The reflector plate may be finished with various colors, and its figure may be planar or polyhedral, and the surface thereof may be smooth or rugged.

Abstract: A backlight assembly for providing liquid crystal display enhanced brightness of light with a lower consumption of electricity includes a light guide plate having brightness enhancing recesses formed on a bottom surface and light collecting grooves formed on an upper surface. The brightness enhancing recesses efficiently reflect the light having different directions and the light collecting grooves collects the light reflected by the brightness enhancing recesses.

Abstract: A backlight device including a light source, a light guiding plate arranged at one side of the light source for transferring a light from the light source, at least one diffusion sheet and prism sheet sequentially arranged on the light guiding plate, a reflection sheet placed beneath the light guiding plate and having a stepped portion formed at a light incident portion thereof, and a main supporting frame accommodating the light source, the light guiding plate, the diffusion sheet, the prism sheet, and the reflection sheet.

Abstract: A light guide plate of the present invention is characterized by being obtained by melt molding a thermoplastic resin having a melt flow rate of at least 50 [g/10 min.] under a load of 2.16 kgf at 280° C. The thermoplastic resin is preferably a thermoplastic resin containing an alicyclic structure, more preferably a norbornene-based polymer.

Abstract: The transreflectors may comprise a transparent substrate having reflective surfaces and other light transmissive surfaces for respectively reflecting and transmitting a greater portion of the light striking opposite sides of the substrate. Alternatively, the transreflectors may comprise two or more transparent substrates of different indices of refraction bonded together, with a pattern of optical deformities in the mating side of one of the substrates and an inverse pattern of optical deformities in the mating side of an other substrate in mating engagement with each other. The transreflectors are used in a transreflector system or display to transmit more of the light emitted by a backlight or other light source incident on one side of the transreflectors and reflect more of the light incident on the opposite side of the transreflectors. The transreflectors and backlight may be tuned to each other to enable the transreflectors to better transmit more of the light emitted by the backlight.

Abstract: A lamp assembly including a number of light sources each utilized in conjunction with an optical element. The optical elements include a body of light transmitting material which further includes a top surface, a bottom surface, a front surface and a plurality of facets. The facets receive light through the front surface and reflect light through the top surface. The assembly further includes a manifold defined by the optical elements. When viewed in a direction toward the top surface, a majority of the optical elements have a common shape, preferably a pie wedge shape.

Abstract: The LED lamp includes a plurality of light emitting diodes and a cover lens arranged so that light emitted by the plurality of light emitting diodes is output through the cover lens. The cover lens has a plurality of prisms including a plurality of first prisms formed on the inner surface thereof, and a direction and shape of the incident surfaces of the first prisms are set such that the first prisms output light in first luminous intensity distribution patterns that are substantially equal to each other.

Abstract: A vertically downward back-light module of the invention comprises a light-guiding panel, a light source, a reflective element, and a base. The light-guiding panel includes a bottom reflecting surface in which is formed a slot having a corrugated diffusing surface and light entry side surfaces. The light-guiding panel includes lateral wings respectively extending at a side of each light entry side surface. Each lateral wing extends in inclination relative to a horizontal plane including the opening of the slot in which is placed the light source. The reflective element covers the bottom reflecting surface and encapsulates the light source in the light-guiding panel. The light-guiding panel with the light source are mounted on the base. The light from the light source partially travels through the corrugated diffusing surface, and partially through the lateral wings. The brightness in proximity of the light source is thereby reduced.

Abstract: A lighting device (10, 11) including:

Abstract: An illumination device having an elongated transparent cylinder has one cylinder end covered by a housing containing an LED. A micro-textured orange or red polyvinyl chloride sheet is rolled inside the cylinder to maximize illumination at a range of external locations. The surface of the plastic seen by the unaided eye is a smooth surface and a textured surface. The textured surface faces inside the cylinder and is micro-textured according to a geometric pattern. A brickwork pattern of 4 millimeter squares is visible, wherein every third square in a row scatters light in the same way. The surface of each square is shaped by three sets of excised parallel grooves which meet in a common set of intersections at the center-lines thereof to form a lattice defining isosceles triangles. The upper sides of the grooves meet at apices within each triangle to form irregular tetrahedra on each respective triangular base.

Abstract: A backlight system (100) in accordance with the present invention includes a plurality of light sources (110) for emitting light beams and a light guide plate (120) for receiving the light beams emitted by the light sources. The light guide plate includes a light input surface (121) and a light output surface (122) joining the light input surface. The light input surface has a plurality of protrusions (124) thereon. The light beams are refracted and diffused by the protrusions, and are then transmitted through the light guide plate to be emitted with a high degree of uniformity through the light output surface.

Abstract: An edge-lit luminaire includes a panel formed of a transparent material. The panel includes first and second opposing surfaces. At least one edge light source is positioned proximate to the panel. A plurality of prismatic reflective/refractive elements is spaced apart on a predefined pattern on the second surface. The plurality of prismatic reflective/refractive elements have a predefined contour for accurate ray direction control. The predefined pattern on the second surface includes predefined gradient spacing and size variables of the prismatic reflective/refractive elements for providing uniform ray emission across the panel. The plurality of prismatic reflective/refractive elements have a predefined relative spacing of the prismatic reflective/refractive elements based upon a position relative to the light source. Also the predefined relative size of each of the prismatic reflective/refractive elements can be based upon its position relative to the light source.

Abstract: An industrial luminaire with a prismatic refractor including an interior surface formed as an open-ended surface of revolution of a plane curve about a rotational axis, the plane curve having a plurality of segments corresponding to segments on a reference curve which, for each segment of the reference curve, the corresponding segment on the plane curve has been incrementally rotated with respect to a reference point on a reference axis for the reference curve.

Abstract: A backlight unit includes a point light source emitting light and a light guide panel including a holographic pattern formed to have a concentric circle shape having a center at the point light center. Thus, since the incident azimuth angle of light incident on the holographic pattern can be made constant, an efficiency of light exhausted through the light exhaust surface can be improved. Also, since the distribution of the exhaust azimuth angle of the exhaust light can be made uniform, a uniform brightness can be obtained from the exhaust surface.

Abstract: A reflector has a curved part covering the light source and a pair of end parts extending at the two sides of the curved part. The inside surface of each end part has a plurality of substantially parallel projections or depressions. The light-guiding plate has an incident surface and an emission surface substantially perpendicular to the incident surface, the incident surface having a plurality of projections or depressions extending substantially parallel to the emission surface. Also, the reflection surface of the light-guiding plate has projections.

Abstract: The invention proposes an indicator light, in particular for a motor vehicle. The indicator light includes a central optical axis, a light source and a solid optical piece. The solid optical piece includes at least (1) an input face whose generatrix lies in a direction substantially parallel to the optical axis, (2) a rear reflection face whose generatrix lies in a direction substantially inclined towards the front, and (3) a front exit face. The exit face is formed by a series of elementary distribution dioptric elements, each of which is designed to form an elementary light beam whose image, on a screen placed in front of the indicator light, corresponds to the indicating function to be fulfilled.

Abstract: A lighting device for installation in a substantially plane surface, comprising at least one lamp device that emits light essentially in a light direction which forms an angle with an exit face of a light refracting means in the lamp device. The lamp device comprises a light source that emits light towards an incident face of the light refracting means, where the light refracting means has a longitudinal direction coincident with the light direction, and where the exit face is approximately parallel to the substantially plane surface. The exit face is set a slight angle of inclination relative to the substantially plane surface, the angle and the angle of inclination in combination causing light from the light source to be brought to an emergent angle above the face that satisfies pre-set requirements for light intensity close to the surface. A prism is also described wherein at least the edge formed between the exit face of the prism and a side face which forms an acute angle with the exit face is rounded.

Abstract: A direct-type backlight module. The direct-type backlight module includes a first diffuser, a prism, a second diffuser, a reflector and a tube. The prism is disposed under the first diffuser. The second diffuser is disposed under the prism. The reflector is disposed under the second diffuser and has a plurality of protruding reflecting portions. The protruding reflecting portions are separated from each other by a predetermined distance. The tube is disposed between the second diffuser and the reflector. The tube is positioned between two contiguous protruding reflecting portions of the reflector. Light emitted from the tube is reflected upward into the second diffuser, the prism and the first diffuser by the reflector and the protruding reflecting portions.

Abstract: A surface light source device and display utilize a light guide plate provided with micro-reflectors arranged in an orientation suitable for a plurality of input portions having point-like light emitters, respectively. A light guide plate 15 has a back face divided into areas ARA to ARC to each of which each input portion having each of LEDs 14A to 14C is shared. Micro-reflectors 19 in each of areas ARA to ARC are orientated as to be directed to each of LEDs 14A to 14C correspondingly, effecting an effective direction conversion. Emitted light is incident to a liquid crystal display panel generally at a right angle via a light diffusion sheet. Some micro-reflectors 19 in each of areas ARA to ARC may be arranged as to be directed to an adjacent input portion. Micro-reflectors may be shaped like quadrangle pyramid projections, cylindrical dents or V-shaped dents.

Abstract: A backlight system (300) includes a light guide plate (3024), a reflection plate (3023), a light source (3021) disposed at one side of the light guide plate, a diffusion plate (3025) and a reflection polarizer (3027), which lets light polarized in one certain direction pass, and reflects light polarized in a polarization direction perpendicular to the said certain direction. The reflection plate, the light guide plate, the diffusion plate, and the reflection polarizer are stacked up one on top of the other. A plurality of prisms (1) is disposed on a surface of the diffusion plate, which forms a plurality of V-shaped grooves (not labeled).

Abstract: A light pipe includes a plate-like member having light output means formed in its upper surface so that light incident on an incidence side surface of the plate-like member is exited from the lower surface of the plate-like member through the light output means, an adhesive layer having a refractive index lower than that of the plate-like member, and (i) an anti-reflection layer made of a circularly polarizer and bonded to a lower surface of the plate-like member through the adhesive layer or (ii) a light-diffusing layer having a surface of fine prismatic structures and bonded to a lower surface of the plate-like member through the adhesive layer. A plane light source unit includes at least one light source disposed on one side surface of the light pipe. A reflection type liquid-crystal display device includes the plane light source unit and a liquid-crystal cell including a reflection layer disposed on the light output side of the plane light source unit.

Abstract: Photoconductive structure of backlight module includes a photoconductive board, a light source, a reflecting board and a brightening film. One of top face and bottom face of the photoconductive board is formed with multiple photoconductive patterns which are concentric arches centered at the light source. The reflecting board is disposed on one face of the photoconductive board, while the brightening film is disposed on the other face of the photoconductive board. One of the top face and bottom face of the brightening film is formed with multiple focusing patterns arranged in the same aspect as the photoconductive patterns of the photoconductive board. Under action of the focusing patterns and the photoconductive patterns, the light beam projected from the light source is concentrated and goes out from the photoconductive board in the direction of the normal line of the photoconductive board.

Abstract: To provide an LED lamp that is capable of achieving a desired luminous intensity distribution characteristic and producing uniform planar light emission, the LED lamp comprises a plurality of light emitting diodes and a cover lens so that light emitted by the plurality of light emitting diodes is output through the cover lens, wherein the cover lens has a plurality of prisms including a plurality of first prisms formed on the inner surface thereof, and direction and shape of the incident surfaces of the first prisms are set such that the first prisms output light in first luminous intensity distribution patterns that are substantially equal to each other.

Abstract: The present invention discloses a backlight device for a liquid crystal display device, which includes at least a lamp; at least a lamp housing surrounding the lamp and having an opening on a side; at least a light guide plate connected to the opening of the lamp housing, the light guide plate guiding light from the lamp; a reflector arranged on the rear surface of the light guide plate, the reflector reflecting the light from the lamp in a direction to the light guide plate; a pre-collimator disposed in the lamp housing between the lamp and the light guide plate; a diffusion sheet disposed on the front surface of the light guide plate; and a prism sheet disposed on the diffusion sheet.

Abstract: An open type luminaire lens including a non-circular reflective lens having a metalized exterior surface and a prism section, the non-circular reflective lens having a shape generally defined by the combination of two parabolas, the prism section including and array of external reflecting prisms of varying predetermined shapes and varying predetermined sizes for use in providing a desired efficient light distribution.

Abstract: A light engine (9) for a projection display is provided which employs: 1) at least one light source (25), 2) at least one TIR prism assembly (13), and 3) at least one digital micromirror device (15), wherein: (a) the illumination path (55) between the light source (25) and the prism assembly (13) is unfolded, i.e., the illumination path is free of fold mirrors; and (b) the angle &ggr; between the illumination path (55) and the device's horizontal axis (53) is preferably less than or equal to about 20°.

Abstract: The color temperature of light emitted by a luminaire having a hollow prismatic light guide is varied to counteract aesthetically undesirable reddening gradient of the emitted light. Reddening is caused by the light guide's dielectric material, which absorbs blue light rays such that proportionately more red than blue rays are guided to the light guide's far end than to points near the guide's light input end. Flare light rays which escape through the light guide near its light input end are color filtered and reflected back into the light guide. The filter color lies within a CIE-1931 chromaticity diagram {4800° Kelvin; 570 nm; 600 nm} color gamut triangle. Color filtering absorbs blue flare rays as a function of distance along the guide, imparting a near-end reddening gradient to the emitted light in inverse proportion to the far-end reddening gradient, giving the emitted light a constant apparent color, independent of distance along the guide.

Abstract: Light emitting panel assemblies include a light emitting panel member having a uniform or variable pattern of light extracting deformities of well defined shapes in or on one or more surface areas of the light emitting panel member. The size and shape as well as the depth and angular orientation and position or location of the light extracting deformities may vary along the length and/or width of a panel surface area to obtain a desired light output distribution from the panel surface area. Also, at least some of the deformities may have planar surfaces in parallel spaced relation to a panel surface area. A focused light source may be insert molded or cast within a light transition area of the light emitting panel member to focus the light on an input surface of the light transition area with predetermined ray angles to fit a particular application. Molded supports may be provided on the panel member for supporting other parts or components in spaced relation therefrom.

Abstract: The invention provides in preferred aspects architectural lighting structures that comprise a plurality of tubular elements at least partially embedded into an at least substantially transparent lens structure of a lighting fixture. The lighting fixture is typically a device employed for interior use, particularly residential buildings or commercial buildings such as office buildings. By partially embedding the array or plurality of tubular elements into the transparent lens structure, the fixture can appear as if it is substantially a part of the surrounding surface when the lighting fixture is turned off. Nevertheless, when the light is turned on, light coming from the fixture can still be directed or modified in an appropriate manner, e.g. without detrimental light output reductions), and without the need of an expensive, sophisticated reflector or any necessity of the fixture extending beyond the surrounding surface as has been utilized in certain prior attempts to mask architectural lighting fixtures.

Abstract: The multi-beam scanning device includes first and second light emitting elements that emit first and second light beams, respectively, a polygon mirror that deflects the first and second light beams to simultaneously scan the first and second light beams across an object. A prism having a light entrance portion and a light exit portion is located between the light emitting elements and the polygon mirror such that the first light beam enters the first prism through the light entrance portion and exits from the first prism through the light exit portion toward the polygon mirror. The light exit portion is inserted into the optical path of the second light beam to prevent a part of the second light beam from proceeding toward the polygon mirror.

Abstract: Poor visibility at night is a stressful and dangerous situation, dreaded by many drivers. The frequency of accidents is decidedly higher at night as a result of poor visibility, compared with driving during the day and with good visibility. An improvement of visibility at night is achieved by using systems which, in addition to the normal headlights, have two “laser headlights” which use laser diodes emitting in the near infrared range as a light source. In order to minimize the space requirement for the laser headlights in addition to the normal headlights, a device is described in which, in an inventive way, the light beam used for lighting is deflected by a deviating prism and a reflector. It is conceivable to design the device such that the reflector emits the light beam in a direction which is rotated by approximately 90 degrees with respect to the direction of incidence of the light beam into the deviating prism.

Abstract: A prism unit has transmitting/totally-reflecting surfaces which cross each other, formed using at least one prism. Light emanating from a light source falls on the prism unit. The light is transmitted or totally reflected from the surfaces according to an angle of incidence at which the light falls on the prism unit. Transmitted light is radiated forwards, while totally-reflected light is directed laterally. A reflecting member is located laterally in order to cover the prism unit, whereby light totally reflected laterally by the prism unit is reflected forwards. In order to constitute the transmitting/totally—reflecting surfaces, a first air layer and a second air layer are formed in the prism unit so to have a substantially uniform width and oppose each other with a plane, which contains a glowing member of the light source and extends forwards, between them.

Abstract: Disclosed is an apparatus to align panels in projector including synthesizing system holding means located on an upper portion of a synthesizing system for supporting the synthesizing system. The apparatus to align panels in projector can prevent deviation(misalignment) between at least two or more prisms and panels, which are mounted on the synthesizing system, due to vibration.

Abstract: A surface light source device includes a linear light source, and a light emitted from the linear light source is incident onto one side surface of a light guide plate. The light is then emitted from an upper surface of the light guide plate. A display panel is provided so as to cover an upper surface of the light guide plate. The display panel has two display areas that its translucent rates are different each other. In addition, a light-shielding sheet is provided between the light guide plate and the display area to shield the light emitted from the light guide plate. A light-shielding effect of the light guide plate deteriorates with to a distance from the side surface of the light guide plate, and a luminance irregularity of the light emitted from the light guide plate is absorbed in the light-shielding sheet.

Abstract: A display has a liquid crystal display panel illuminated by a surface light source device. The surface light source device comprises a primary light source provided with a plurality of point-like light emitters and a light guide plate which is supplied with light by the primary light, the light being introduced in the light guide plate through an incidence face and being emitted through an emission face. The incidence face is located at a corner portion of the light guide plate. A great number of projections for light-advancing-direction-conversion are formed on a back face. Each of the projections includes a pair of slopes formed so as to provide a ridge approaching the back face with an increasing distance from the incidence face. The pairs of slopes form valleys in the light guide plate, the valleys being orientated to be opened toward the corner portion corresponding to the incidence face. Each projection is shaped like, for instance, a quadrangle pyramid.

Abstract: A planar light source system having an LED (1) serving as a primary light source of substantially point-shaped light source, a light guide (2) having a light incident face on which light emitted from the LED (1) is incident and a light emission face (4) from which light guided through the light guide (2) is emitted, a light deflecting device (3) for controlling the direction of the emission light from the light guide (2), and a reflection sheet (6). LED (1) is disposed at a corner portion of the light guide (2), and many elongated prisms (5) are arranged substantially arcuately in parallel to each other on the light incident surface (14) of the light deflecting device (3) so as to surround LED (1).

Abstract: A lens (2) disposed in front of a lamp housing (11) has a light transmitting portion (2a) thereof zoned at the rear side into a central section (X) and lateral sections (Y) at both sides thereof, the central and lateral sections (X, Y) being additionally divided into blocks (A, B, C, D, E, F, G), respectively, and prism elements (p) in the blocks are configured so that those (p) in the central section (X) control reflected light from a reflector (12) as reference light, and those (p) in the lateral sections (Y) control direct light from a light source bulb (10) as reference light, thereby providing illumination ranges (J, K) within a light distribution range (LDR) conforming to a light distribution specification (S).

Abstract: There is provided a backlight device which is bright and has low unevenness of luminance, and a backlight device 2 is constituted by a translucent sheet 6 having light diffusibility, a light emitting element 5 disposed behind the translucent sheet 6, and a prism sheet 7 disposed between the light emitting element 5 and the translucent sheet 6 and having a prism surface 72 on which plural rows of prism portions 73 each having a pair of inclined surfaces (hem sides B and C) intersecting with each other at a top A1 and a substantially V-shaped section are formed, and a plane surface portion 71 formed on a surface opposite to the prism surface 72, in which the prism sheet 7 is disposed away from the light emitting element 5 and the translucent sheet 6 by distances W1 and W2 so that the prism surface 72 is faced toward the light emitting element 5.

Abstract: An ornamental lamp having a colored coarse surface in the periphery of the bulb thereof, the colored coarse surface having a plurality of recessed and protruded ornamental lines extending in different directions and intersecting one another, showing a design.

Abstract: Disclosed is a light diffuser comprising a macro diffusion efficiency variation. Also disclosed is a light diffuser for rear projection displays, back-lighted imaging media, a liquid crystal display component and device, and a process for diffusing light.

Abstract: A device for generating lighting effects, the device comprises a light modulating component which is formed from an optically transmissive material and has a multi-faceted surface and also a means for rotating the light modulator in use. The device further comprises a light source, which is positioned such that the light passes through the light modulating component to illuminate a light receiving surface. This, in turn, produces an optical illumination effect.

Abstract: An improved surface light source device applicable to back lighting of a liquid display. In the surface light source device, a plate-shaped optical block (15) is disposed along an emitting surface of a plate-shaped optical member (11), to which illumination light is to be supplied from a primary light source (3), and has on at least one of its outer and inner sides a directivity modifying surface for modifying directivity of illumination light emitted from the emitting surface. Directivity modifying surface occupies at least part of the whole area of the optical block except a predetermined range (AR2) from a position aligning to the incidence surface of the plate-shaped optical member (11). The optical block (15) and the plate-shaped optical member (11) may be held in a unitary form by a holding mechanism formed integrally with the optical block (15) and/or the plate-shaped optical member (11).

Abstract: A phototherapy device includes a transparent member and one or more light sources mounted in relation to the transparent member for directing light through the transparent member for distribution of the light to a body part of a patient receiving phototherapy. The light source may comprise an array of LEDs supported by a base having supports for positioning the transparent member in relation to the LEDs. Also a gap may be provided between the light source and transparent member to facilitate in dissipating heat produced by the light source. Further the transparent member may be curved to fit a body part of a patient receiving phototherapy.