Abstract: A bundle beam UV LED ultraviolet light sweeping method includes: activating electrical power to input into a PCB to light up a bundle beam UV LED ultraviolet light bead and driving a motor to cause a polygonal multiple-reflective-surface aluminum mirror to rotate, ultraviolet light from the UV LED being projected toward the reflective surface, and reflected by the reflective surface to change light direction for successive back-and-forth home-position-returning sweeping, the light converting from lines into sectorial shapes that are connected to form a large ultraviolet light operation region. The device includes a rotating device having a motor of which a spindle is mounted with a polygonal multiple-reflective-surface aluminum mirror; an UV LED bundle beam light source assembly having a bundle beam UV LED ultraviolet light bead fixed on a PCB; and a fixing base having a main body and a plurality of mounting braces.

Abstract: Disclosed are embodiments of exterior aircraft assemblies integrating compatible elements. In one example, an integrated aircraft assembly includes an aerodynamic housing attachable to an aircraft, an antenna system including at least one antenna element housed within the aerodynamic housing, and a lighting system including at least one light fixture housed within the aerodynamic housing. The at least one antenna element and the at least one light fixture may be co-located within then housing or mounted separately on the housing.

Abstract: A wall-wash lighting fixture is provided. The wall-wash lighting fixture includes a solid-state light source having a light emitting surface configured to emit light. The light emitting surface is a long dimension of the light emitting surface. The wall-wash lighting fixture further includes a frustoconical structure. The solid-state light source is positioned to emit light into the frustoconical structure. The wall-wash lighting fixture includes a reflector coupled to the frustoconical structure such that light exiting frustoconical structure is reflected at a non-parallel angle relative to a vertical axis associated with the wall-wash lighting fixture. The reflector defines an opening.

Abstract: A ceiling-embedded type linear lighting device includes: a housing having a receiving space formed therein and having an open side at one end; and at least one lighting module including: a light emitting body including a plurality of light emitting devices disposed on a substrate in a length direction thereof, a fixing plate allowing the light emitting body to be fixed thereto, and elastic portions disposed to be inclined from both side surfaces of the fixing plate so as to be elastically supported by an inside surface of the housing at the receiving space, so that the lighting module is vertically, detachably coupled to an interior of the receiving space from a front of the open side of the receiving space of the housing. The elastic portions and the inside surface of the housing at the receiving space are provided with two coupling portions that are engaged to each other.

Abstract: An elevator interior illumination assembly for providing a rectilinear source of illumination in an elevator ceiling panel. An LED, reflector, and a rectilinear lens are carried by the housing, and the reflector and lens are configured to direct light emitted by the LED into an evenly-distributed rectilinear light emission image across the lens.

Abstract: The present invention relates to a reflector for light emission sources, having a rotational symmetry about an axis, an apex comprising a first opening of size such to accommodate a light source and a second opening, larger in size than the first opening, adapted to let out the direct light emitted by said light source and the light reflected by the internal surface of the reflector, surface which is characterized by a series of segments comprising a plurality of approximately rectangular surface segments in turn comprising a plurality of reliefs, preferably having a substantially hemispherical shape, and characterized by a convexity facing towards the inside of the reflector, said convexity being characterized by a single curvature radius.

Abstract: A method for generating diffuse reflection light and a diffuse reflection lamp are provided. The diffuse reflection lamp comprises a reflective plate (10), a connector (20) and a dragging device (40). The reflective plate (10) is removably fixed on the lamp by the connector (20) to reflect the light from the lamp. One end of the dragging device (40) is connected with the reflective plate (10), and the other end is connected with the connector (20); or the dragging device (40) hoops around the outer edge of the reflective plate (10). Therefore, the reflective plate (10) is elastically bended toward and formed into a curved arc surface to collect the diffuse reflection light.

Abstract: The annular-arranged lamp capable of backward projecting by concave sphere provided by this invention is mainly provided with a side of an annular heat dissipation device being installed with light emitting devices (102) wherein the lamp is installed with two or more than two light emitting devices (110) arranged in a circular or polygonal means, and the light projecting axial line of each light emitting device (110) is projected towards a reflection device with concave sphere (103) disposed above the annular heat dissipation device (101), light beams of the light emitting devices (110) are reflected by the reflection device with concave sphere (103) then refracted to a preset projection range, thereby forming a unified light source.

Abstract: Embodiments of the present invention provide separate optical devices operable to couple to a separate LED, the separate optical device comprising an entrance surface to receive light from a separate LED when the separate optical device is coupled to the separate LED, an exit surface opposite from and a distance from the entrance surface and a set of sidewalls. The exit surface can have at least a minimum area necessary to conserve brightness for a desired half-angle of light projected from the separate optical device. Furthermore, each sidewall is positioned and shaped so that rays having a straight transmission path from the entrance surface to that sidewall reflect to the exit surface with an angle of incidence at the exit surface at less than or equal to a critical angle at the exit surface.

Abstract: A light guide element and a lamp are described. The light guide element has a length and an angle of total reflection. The light guide element includes a light-incident surface, a light-emitting surface, a first reflecting surface, and a second reflecting surface. The light-incident surface includes a first outer peripheral edge and a first inner peripheral edge. The light-emitting surface includes a second outer peripheral edge and a second inner peripheral edge. The first reflecting surface connects the first outer peripheral edge and the second outer peripheral edge. The second reflecting surface connects the first inner peripheral edge and the second inner peripheral edge. An angle is formed between the first reflecting surface and the second reflecting surface. The angle is smaller than the angle of total reflection, and the length is greater than a predetermined distance divided by tan the angle of total reflection).

Abstract: An optical structure includes a body facing a light emitting surface of a light emitting diode package and including a portion protruding toward the light emitting surface of the light emitting diode package, where a surface of the protruding portion faces the light emitting surface and forms a reflective surface of the optical structure; and a leg elongated from a periphery of the body toward the point light source, where the leg supports the body to be spaced apart from the light emitting diode package.

Abstract: A retrofit reflector for a fixture that may be utilizing an induction lamp, mounts the lamp at a point of zero bending moment on the reflector. The reflector bends widthwise in the fixture to fit within various widths of fixtures while maintaining the lamp along the zero bending moment on the reflector.

Abstract: The disclosed annular light guide illuminator (10) is operable to guide light from its entry surface (12) to its exit surface (16) for illuminating a zone (17) at its distal end (19), and comprises a truncated-cone-shaped inner cavity (18) of which base opens onto said distal end (19), and of which truncated summit (20) opposite to said base opens onto an inner hole portion (21) for back transmitting light reflected/emitted from said zone. An optical scanner implementing said illuminator is also disclosed.

Abstract: The present invention relates to a reflection cap for a lamp including: a body open on both ends thereof and having a reflection plate disposed on the upper portion thereof and a transparent plate disposed on the lower portion thereof; left and right end caps detachably fixed to both ends of the body and each having a boss protrudedly formed on the outer surface thereof, the boss having a through-hole formed thereon in such a manner as to fittingly insert the fluorescent lamp thereinto; and a fluorescent lamp fixing member rotatably coupled to the boss and adapted to hold and rotate a fluorescent lamp finishing portion clockwisely or counter-clockwisely so as to connect connection terminals of the fluorescent lamp fitted to the through-hole to connection terminals of a socket.

Abstract: A lampshade comprises a support seat, a reflector, and a cover. The support seat includes a frame and a clamping unit, the frame defining a central space, the clamping unit having two opposing connection bars attached to the frame and two grasp portions each being provided at one end of a corresponding connection bar. The distance between the two grasp portions is adjustable. The reflector is placed on top of the frame and has a reflective surface that can be fitted through the central space of the frame. The cover is placed on top of the reflector and fastened to the frame from a side opposite to the clamping unit. Accordingly, when a lighting device, such as a flashlight, is clamped by the lampshade, the light emitting from the lighting device can be reflected by the reflector to diffuse into the surrounding environment so as to increase the illuminating range.

Abstract: An illumination device for a vehicle includes a light source and an inside handle well. The inside handle well has a lower wall, an upper wall, and an opening. The light source is arranged under the lower wall. The lower wall has a light exit portion configured such that light emitted from the light source exits therethrough and travels to an inside of the inside handle well. The upper wall has a light reflecting portion configured to reflect light exiting through the light exit portion and traveling upward in the inside handle well toward the inside handle. The opening is formed on the inner side of the interior of the vehicle.

Abstract: AN LED lighting device of an aircraft for maneuvers of landing, and/or take-off, and/or taxiing, and/or searching comprising: one or more light-emitting modules including a light-emitting semiconductor device configured for emitting a light radiation; a supporting substrate carrying the light-emitting semiconductor device; a curved reflector having a concave reflecting surface and defining a plane of emission, wherein the concave reflecting surface has a semiparabolic shape obtained by sectioning a semiparaboloid along two mutually parallel cutting planes, and is arranged facing the light-emitting semiconductor device in such a way as to collect the light radiation and generate a radiation reflected through the plane of emission.

Abstract: One embodiment relates to an oblique illuminator. The oblique illuminator includes a light source emitting a light beam, a first reflective surface, and a second reflective surface. The first reflective surface has a convex cylindrical shape with a projected parabolic profile along the non-powered direction which is configured to reflect the light beam from the light source and which defines a focal line. The second reflective surface has a concave cylindrical shape with a projected elliptical profile which is configured to reflect the light beam from the first reflective surface and which defines first and second focal lines. The focal line of the first reflective surface is coincident with the first focal line of the second reflective surface. The first and second focal lines of the second reflective surface may be a same line in which case the elliptical curvature is a projected spherical profile. Other embodiments, aspects and features are also disclosed.

Abstract: A light engine comprises a plurality of light emitting diode (LED) devices arranged in a plane and a corresponding plurality of reflector cups wherein each LED device is disposed in a corresponding reflector cup and wherein the light engine does not include either a diffuser or a light mixing cavity. A directional lamp comprises the aforesaid light engine and an imaging lens arranged to generate an image of the light engine at about infinity. The directional lamp may further include a collecting reflector (for example, a conical, parabolic, or compound parabolic reflector) extending between a relatively narrower entrance aperture at which the light engine is disposed and a relatively wider exit aperture at which the imaging lens is disposed. The imaging lens may be arranged to generate a defocused image of the light engine at about infinity to soften the beam edge.

Abstract: A reflector configured to receive and reflect illumination from an illumination device across a projector lens of a vehicle headlight assembly. The reflector includes a reflection surface, a curved edge adjacent to the reflection surface and defining a lower illumination aperture, and a wall member extending across the lower illumination aperture to define a gap portion between the wall member and the curved edge. The wall member is configured to reduce illumination reflected from the reflection surface by blocking an amount of illumination passing through the lower illumination aperture.

Abstract: A vehicle lamp assembly includes a lamp housing, a primary lamp unit, and an auxiliary lamp unit. The primary lamp unit and the auxiliary lamp unit are provided within the lamp housing. The auxiliary lamp unit includes a first lighting device, a second lighting device and a supplemental lighting device. The first lighting device is configured to illuminate a portion of the lamp housing in a first direction and the second lighting device is configured to illuminate a portion of the lamp housing in a second direction. The supplemental lighting device is positioned in the lamp housing at an intersection of the first and second directions to provide a uniform lit appearance at a transition of the first lighting device and the second lighting device.

Abstract: A projection apparatus and a light condensing module are provided. The light condensing module condenses and deflects an incident beam. The light condensing module includes a curving incident surface, a curving outgoing surface and a reflection surface. The curving incident surface receives the incident beam. The curving outgoing surface is disposed on a transmission path of the incident beam from the curving incident surface. The reflection surface is disposed on the transmission path of the incident beam, and located between the curving incident surface and the curving outgoing surface. A ray of the incident beam propagates through the curving incident surface along the optical axis of the curving incident surface, and emits out from the curving outgoing surface along a direction inclined to the optical axis of the curving outgoing surface.

Abstract: A lighting unit comprises a slender substrate; a plurality of semiconductor light sources arranged in a row in the lengthwise direction on the substrate; and a light reflector disposed along one long side of the substrate, the light reflector has a multi-reflector in which a plurality of small pieces are combined.

Abstract: A lamp including a first housing, a second housing assembled with the first housing to form a housing assembly and a bulb base is provided. The second housing includes a first sidewall and a second sidewall perpendicularly connected to the first sidewall. The first sidewall has a first stop portion extending along a normal direction. The bulb base is inserted into a first opening of the housing assembly to be assembled to the housing assembly. The bulb base has a second opening, multiple catches arranged on an outer sidewall of the second opening in a circumference direction and a second stop portion. The second stop portion disposed on the catches is located on a rotation path of the first stop portion when the bulb base rotates relative to the housing assembly for limiting a rotation angle between the housing assembly and the bulb base.

Abstract: A mirror ball adapted to engage the socket of a ceiling mounted electric light fixture in order to be suspended and powered therefrom. A tubular stem having a proximal portion threaded in the manner of an Edision screw is provided extending downward from the fixture to a lower base. A lightweight mirrored sphere or globe having a void through its (vertical) polar axis is rotatably engaged on the stem and retained in place by the lower base which houses power systems, a controller and a motor engaged to an annular gear at the lower pole of the mirrored sphere in order to slowly rotate the globe. A power supply is used to reduce line voltage to 12 v DC to drive the motor and operate one or more LED lighting elements directed at the mirrored surface and mounted at the ends of one or more arms radiating from the lower housing.

Abstract: A downlight fixture includes an optic housing, a light-emitting diode (LED) array, and a lens-less reflector. The LED array emits directional light rays in a downward direction towards an illuminated target. The reflector is mounted within the optic housing and adjacent to the LED array. The reflector has a hyperbolic wall continuously extending between a narrow neck and a wide bell. The light rays are spread into a light beam within the reflector upon making contact solely with the hyperbolic wall.

Abstract: The flashlight accessory is a device that attaches onto a lighted end of an existing flashlight, and which reflects light radially from said flashlight in order to produce lighting consistent with a lantern. The flashlight accessory includes a hollowed cylinder within which a reflective cone shaped surface reflects light radially with respect to the hollowed cylinder. The hollowed cylinder includes an opening upon which the lighted end of the flashlight is placed against. A strap is provided at a distance above said opening in order to secure the flashlight accessory onto the lighted end of the flashlight. At least one hook is included on a distal end of said cylinder, and which enables the accessory to hang from an object in a manner consistent with a traditional lantern.

Abstract: A reflector for a strip-type LED lamp. The reflector is generally of U-section, longitudinally elongated, and formed by a longitudinally extending floor formed with a plurality of holes adapted to be aligned with respective LEDs of the lamp, and a pair of longitudinally extending side walls projecting transversely from outer edges of the floor and diverging away from the floor. The side walls have respective outer edges deflectable elastically transversely toward each other.

Abstract: A reflector may have a reflective surface, wherein the contour of the reflective surface is traversed by a Bézier curve.

Abstract: A reflecting member made from a tube-shaped member has an inner peripheral surface that structures a reflecting surface on an axis of the tube-shaped member. A slope, relative to the axis, of a tangent line of the inner peripheral surface in a cross-sectional plane containing the axis changes monotonically along the axis. In relation to a target facing a smaller opening of the tube-shaped member, at a specific distance therefrom, and having a flat region perpendicular to the axis and axially symmetrical relative to the axis, of an electromagnetic radiation incident along the axis from a larger opening of the tube-shaped member, that radiation reflected at a specific location on the larger opening side is incident on one end side of the flat region, and that radiation reflected at a specific location on the smaller opening side is incident on the other end side of the flat region.

Abstract: A light fixture for an induction-based light source is described. The light fixture comprises a top cover; a lower cover coupled with the top cover; a lens coupled with the lower cover; a reflector positioned behind the lens; and an induction-based light source positioned between the lens and the reflector, wherein the reflector is configured in relation to the induction-based light source.

Abstract: A substrate for carrying light emitting diodes and a manufacturing method thereof are provided. The substrate includes a bottom portion, a side portion and a reflective element. The side portion is disposed on the bottom portion. An upper surface of the bottom portion and an inner surface of the side portion define a recess where the light emitting diodes and the reflective element are disposed. More specifically, the light emitting diodes are disposed on the upper surface, while the reflective element is disposed along the inner surface of the recess. With the above-mentioned arrangements, the light extraction efficiency of the light emitting diodes can be increased.

Abstract: An apparatus (10) for interrupting a light beam, in particular a laser light beam, with a light beam deflection device (24), wherein the light beam deflection device (24) is arrangeable in the light path of the light beam. An apparatus (10) is characterized in that the light beam deflection device (24) is arranged on a bendable material strip (18), wherein the material strip (18) is held on one side on one end and magnetizable or magnetic sections (20, 22) are arranged on the area facing away from the held end of the material strip (18), preferably on both sides of the material strip (18), wherein a magnet (40, 42) is provided for each section arranged on the material strip (18) and wherein the sections (20, 22) are or can be brought in engagement with the magnetic field of each magnet (40, 42).

Abstract: A liquid crystal display device of an embodiment has: a semiconductor laser diode emitting a first laser beam; a first reflecting unit configured to reflect the first laser beam and form a second laser beam having a one-dimensionally spread distribution; and a second reflecting unit configured to reflect the second laser beam and form a third laser beam having a two-dimensionally spread distribution. The device also has: an optical switch using liquid crystal, the optical switch being configured to control passage and blocking of the third laser beam; and a first scattering unit scattering the third laser beam.

Abstract: A luminaire including a plurality of light-emitting light sources is provided. The luminaire can be produced with little manufacturing out-lay and, consequently, economically, which is suited for street and path lighting and reduces the glare for an observer. The luminaire comprises at least one reflector profile extending in the longitudinal direction and comprising a plurality of apertures and at least one reflector surface provided on the front of the reflector profile, the light sources being arranged in the area of the apertures at the back of the reflector profile. A reflector profile for a luminaire is also provided.

Abstract: Today the use of false ceilings is decreasing as it involves too high an energy consumption. The tendency nowadays is to have bare concrete ceilings onto which luminaires are mounted, which often causes acoustical problems. The invention deals with these acoustical problems and relates to an illumination device (1) comprising a concave reflector (2) bordering,with an outer edge (3),on a light emission window (4). The reflector has a reflective surface (7) facing the light emission window. The illumination device further comprises lamp holding means (8) for accommodating a light source (9),and said lamp holding means being positioned in between the reflective surface and the light emission window. The illumination device is characterized in that the reflector is made of acoustically absorbing material.

Abstract: Light flux controlling member 140 includes first light flux controlling member 141 and second light flux controlling member 142. First light flux controlling member 141 includes incidence surface 143 on which a part of light emitted from light-emitting element 130 is incident, total reflection surface 144 that reflects a part of light incident on incidence surface 143 toward second light flux controlling member 142, and emission surface 145 that emits a part of light incident on incidence surface 143 and light reflected by total reflection surface 144. Second light flux controlling member 142 includes reflection surface 149 that reflects a part of light emitted from first light flux controlling member 141. Reflection surface 149 is a rotational symmetric surface with the optical axis LA of light-emitting element 130 as a rotation axis.

Abstract: A light assembly that includes an elongated housing, a reflective parabolic cylindrical surface within the elongated housing having a focal line and an elongated cover coupled to the elongated housing. The light assembly also includes a plurality of light sources spaced apart longitudinally and emitting light toward the parabolic cylindrical surface. The parabolic cylindrical surface reflects light from the light sources out of the housing through the cover.

Abstract: At least one embodiment in the disclosure describes a high efficiency directional light engine. The light engine comprises a light emitter emitting light and a cone-shaped mirror having a base opening. The light emitter is disposed near or at the base opening. Light emitted from the light emitter is reflected off the cone-shaped mirror and results in one or more first reflection images. The light emitter occupies a substantial portion of the base opening such that the light emitter and the first reflection images forms a virtual point light source without a significant gap(s) between the light emitter and the first reflection images.

Abstract: Disclosed is a simple lighting device for photographing, which makes it possible to take an artistic picture of a human, which is an object to be photographed, enhancing his or her facial expressions, without the need of troublesome light source adjustment. The lighting device comprises a reflecting plate (2) which has a concave shaped surface with respect to the object to be photographed and which has a transmission area (22) which permits light to pass therethrough, and a light emitter (1) which is provided on the convex surface side of the reflecting plate (2) and which emits light toward the transmission area (22). The light emitted from the light emitter (1) and transmitted through the transmission area (22) is irradiated onto the object to be photographed and is reflected by the reflecting plate (2) toward the object to be photographed.

Abstract: An asymmetrical optical assembly employs reflecting surfaces and a lens to combine the light from a plurality of LED lamps into an illumination pattern useful in a floodlight or work light. The reflecting surfaces and lens optical element are not symmetrical with respect to a plane bisecting the optical assembly and including the optical axes of the LED light sources. Some light from the LED light sources is redirected from its emitted trajectory into the desired illumination pattern, while a significant portion of the light from the LED light sources is permitted to exit the optical assembly without redirection. Minimizing the number of optical elements employed and the redirection of light enhances the efficiency of the resulting light assembly.

Abstract: A lighting device including a reflector including a reflecting surface, and a light source unit disposed under the reflector and configured to emit light towards the reflector. Further, the light source unit includes a main body disposed longitudinally along the reflector and having first and second outside surfaces that are inclined towards the reflecting surface, and a plurality of first light emitting diodes disposed on the first outside surface and a plurality of second light emitting diodes disposed on the second outside surface and configured to emit the light towards the reflector.

Abstract: A self check-type flame detector includes a casing provided with a monitoring window formed therein. A wavelength generation unit is disposed inside the casing and generates a wavelength in a direction of the monitoring window. A wavelength detection element is disposed inside the casing and detects the wavelength. A comparison unit is provided with a wavelength DB for storing intensity of a reference wavelength and determines whether the monitoring window has been contaminated. A display unit is located outside the casing and displays a state of the monitoring window. A communication unit is disposed inside the casing and configured to receive operation information for the wavelength generation unit, to provide the operation information to the wavelength generation unit, and to transmit the intensity of the wavelength, or a normal signal or a contamination signal of the monitoring window.

Abstract: A solid state directional lamp is disclosed. The lamp comprises a reflector and a plurality of solid state light emitters directing light rays towards the reflector. For each solid state light emitter of the plurality of solid state light emitters, the reflector defines a segmented parabola and a mirrored wall associated with the light emitter. Each solid state light emitter is positioned in the lamp at a focal point of the segmented parabola associated with the solid state light emitter. For each solid state light, the mirrored wall associated with the solid state light emitter directs light rays from the solid state light emitter into the segmented parabola associated with the same solid state light emitter.

Abstract: A luminaire reflector assembly comprises a top pan having a light socket connected to one of an upper or lower surface of the top pan, the top pan having a plurality of spaced slits about the periphery of the top pan, a lower pan spaced from the top pan, the lower pan connected to the top pan by at least one strut, a plurality of reflective panels extending between the top pan and the lower pan, the plurality of reflective panels bent in a first direction by a punch and an elastomeric die pad, the plurality of reflective panels also bent in a second direction by the punch and elastomeric die pad.

Abstract: Illumination lenses (1806, 1902, 2002, 2100, 2200, 2300, 2400, 2500, 2600, 2700, 2800, 3006, 3100) having surfaces shaped according to given differential equations in order to distribute light in a highly controlled manner with minimum reflection losses are provided. Both primary lenses and secondary lenses are provided. The secondary lenses include outer surfaces that are defined as loci of constant optical distance from an origin at which a light source is located. Versions are provided of both the primary and secondary lenses having Total Internal Reflection (TIR) wings. These are useful in the case that narrower distributions of light are required. A method of refining the shape of the lenses to obtain more obtain lenses that produce better fidelity ideal light distributions is also provided.

Abstract: A reflector with focused output is disclosed. The reflector comprises a reference parabolic portion and a plurality of non-reference parabolic portions. A focal length of the plurality of non-reference parabolic portions is determined from a focal length of the reference parabolic portion. In one embodiment, the focal length of the plurality of non-reference parabolic portions is a perpendicularly projected distance from a focus of the reference parabolic portion onto a central axis of the plurality of non-reference parabolic portions. In one embodiment, the focal lengths of the reference parabolic portion and the plurality of non-reference parabolic portions are scaled by a constant. A method of designing a reflector and an obstruction light that uses the reflector is also disclosed.

Abstract: To obtain a white reflective film that is hard to warp and can ameliorate unevenness in the luminance even when used in such a manner as to be superimposed on a chassis having convex and concave portions for placing circuits and the like or used with an LED, and can prevent uneven close contact with a light guide plate and damage of the light guide plate, the white reflective film for edge-lit backlight is made to meets the requirements (i) to (iii): (i) the stiffness is 2 to 10 mN·m; (ii) convex portions are formed on at least one surface (A) and the maximum height of the convex portion is 15 to 60 ?m; and (iii) the cushion rate at the side of a surface (B) opposite to the surface (A) is 12% or more.

Abstract: A lamp assembly includes a shell wall defining a receiving space that retains a light source therein, and a reflecting unit. The shell wall has a central wall unit and a pair of connecting wall segments. The central wall unit has a base wall segment and a pair of connecting wall segments extending respectively from longitudinal ends of the base wall segment. The extending wall segments extend respectively from side ends of the base wall segment, interconnect the connecting wall segments and cooperate with the connecting wall segments to define an opening in spatial communication with the receiving space. A distance between the distal ends of the connecting wall segments is larger than that between the distal ends of the extending wall segments. The reflecting unit includes convex first reflecting members protruding inwardly from the extending wall segments, and prismatic second reflecting members protruding inwardly from the central wall unit.

Abstract: A light source lamp unit (10) includes a light source lamp (11), an ellipsoidal reflector (12) and a plate body (19). The plate body (19) is provided behind the reflector (12) with a gap kept therebetween, which has a shape corresponding to the profile of a reflecting portion (122) of the reflector (12). A cooling channel for passing a cooling air is formed between the plate body (19) and the reflector (12). The width of the cooling channel in a direction along an optical axis of the light source lamp (11) is minimized at a part near a neck portion (121) of the reflecting portion (122) and enlarged toward the peripheral edge of the reflecting portion (122) of the reflector (12).