Abstract: An oral imaging device includes a base, a camera module, and a plurality of light source modules. The base includes a camera component, an opening surface, and a plurality of light source components connected to two sides of the camera component. A slant angle exists between each light source component and the camera component. The slant angle is a non-right angle. The opening surface is substantially parallel to the camera component. The camera module is located on the camera component and faces the opening surface. The plurality of light source modules each are located on each light source component and configured to project a light beam onto the opening surface. A center ray of the light beam passes through a center point of the opening surface.

Abstract: An LED lighting device, extending along and about a central longitudinal axis, comprises at least one LED light source and a lens made of a transparent material, positioned along the axis; the lens having a concave inlet surface, facing the source, and a convex outlet surface, substantially aligned along the axis and extending about the axis; the inlet surface and the outlet surface have respective elliptic profiles, being defined by respective revolution surfaces generated by the rotation about the axis of respective ellipse portions belonging to a first and a second generatrix ellipses respectively.

Abstract: A mirror assembly can include a housing, a mirror, and a light source. In certain embodiments, the mirror is rotatable within a support portion of the mirror assembly. In some embodiments, the mirror assembly is configured to use an audio sensor or an audio signal derived from an audio sensor, such as an audio sensor or audio signal configured to sense or to correspond to or to represent one or more voice commands or other sounds (e.g., clapping, snapping, or otherwise) received from a user, in order to actuate or adjust any of one or more features or settings of the mirror assembly.

Abstract: Disclosure herein are aerodynamic surgical lights and methods of manufacturing and use thereof. The aerodynamic surgical lights may include a light head made of one or more substantially tubular light housings. The substantially tubular light housings contain and protect a plurality of LED lights and their respective reflectors that aim a light beam toward the lower side of the substantially tubular light housings. The substantially tubular light housings are vertically elongate. The vertically elongated substantially tubular light housings include upper sections that are aerodynamically curved or pointed to streamline airflow past the light housings. The upper sections of the substantially tubular light housings are made of molded plastic resin reinforced with carbon fibers or glass fibers and the lower sections of the substantially tubular light housings are made of a clear moldable plastic.

Abstract: A light source apparatus 1 includes: a light emitter 2 having a plurality of laser diode devices 22 and packages 24 to hold the respective laser diode devices; a collimator 3 disposed on an optical path of a laser beam emitted from each of the laser diode devices; a focusing lens 5 disposed on a downstream side in a direction of an optical axis of each laser diode device relative to the collimator 3 and configured to condense the laser beams; a light guide 6 disposed on the downstream side in the direction of the optical axis relative to the focusing lens 5; and a magnification optical system 4 disposed between the collimator 3 and the focusing lens 5 to bring a beam diameter W?2-1 in a slow axis direction of the laser beam transmitted through the collimator 3 close to a beam diameter W?1-2 in a fast axis direction.

Abstract: The application relates to a cabinet lamp and a lamp cabinet. The cabinet lamp includes a lamp housing, an elastic member and a light-emitting assembly. The lamp housing includes a first shell plate and a second shell plate. The first shell plate and the second shell plate enclose a first space. A surface of the first shell plate surrounding the first space or a surface of the second shell plate surrounding the first space is provided with a first connection part. The elastic member includes a second connection part, the elastic member fits with the first space in a plugging-in manner, and the second connection part is in snap fit with the first connection part. The elastic member is configured to be installed on an inner top wall of the lamp cabinet. The light-emitting assembly is installed on the lamp housing.

Abstract: Condition 1 (an absolute value of a difference between IB×B and EB×B is 55% or smaller) and condition 2 (an absolute value of a difference between IY×Y and EY×Y is 55% or smaller) are satisfied, where, when an area of the light-emitting surface is equally divided into inner and outer regions by a boundary line as an outer edge of a region similar in shape to the light-emitting surface in plan view of a white LED package, IB (%) is an area ratio of blue LED chips in the inner region; IY (%) is an area ratio of the region where no blue LED chips is disposed in the inner region; EB (%) is an area ratio of the blue LED chips in the outer region; and EY (%) is an area ratio of the region where no blue LED chip is disposed in the outer region.

Abstract: The present disclosure relates to field of an arrangement of multiple optical elements to generate multiple beam patterns. The arrangement (100) of multiple optical elements to plurality of fasteners (112), and an optics plate (106). The array board (102) having LEDs (104) mounted thereon in a plurality of first blade patterns (124a-124d). The optics plate (106) is removably fastened to the array board. The optics plate (106) defines lenses (108) in a plurality of second blade patterns (126a-126d) and reflectors (110) in a plurality of third blade patterns (128a-128d), identical to the first blade pattern (124a-124d). The optics plate (106) is manually rotated into a first configuration to align the second blade pattern (126a-126d) with the first blade pattern (124a-124d) and into a second configuration to align the third blade pattern (128a-128d) with the first blade pattern (124a-124d) to generate multiple beam patterns.

Abstract: The invention discloses an optical lens and a light emitting module having the same. The optical lens includes an incident surface around a recess in a center of the bottom surface; a light exit surface for emitting light incident; and a flange portion disposed between the light exit surface and a second edge of the bottom surface. A bottom of the recess has a width in a first axis direction that is greater than a width in a second axis direction orthogonal to the first axis direction. An outer diameter of the bottom surface has a length in the first axis direction that is smaller than a length in the second axis direction. The bottom surface includes a first rough region around the recess and second and third rough regions around the first rough region.

Abstract: A light-emitting device includes a substrate; a lens array having a plurality of lens sections in a matrix pattern; and a plurality of semiconductor laser elements disposed on the substrate. Each of the semiconductor laser elements emits a respective laser beam, each laser beam having a beam shape with a greater width in a column direction than in a row direction on a light incident surface of each respective lens section. The lens sections have an inter-vertex distance in the row direction that is smaller than both (i) a maximum outer diameter of each of the lens sections, and (ii) an inter-vertex distance in the column direction. A curvature of the lens sections in the row direction is the same as a curvature of the lens sections in the column direction.

Abstract: A vehicle lamp with a rotating light source may include a signal receiver which receives a signal from one or more sensors provided in a vehicle; a light emitting diode (LED) portion having one or more LED elements configured to emit light toward an outside of the vehicle; a controller connected to the one or more LED elements and configured to control a light generation amount of the one or more LED elements; a signal transmitter which is connected to the signal receiver, receives the signal from the signal receiver and transmits the received signal to the controller; and a driver coupled to the LED portion and configured to rotate the LED portion, wherein the controller controls the light generation amount of the one or more LED elements in a response to the signal.

Abstract: A light-emitting device includes a substrate; a lens array having a plurality of lens sections in a matrix pattern; and a plurality of semiconductor laser elements disposed on the substrate. Each of the semiconductor laser elements emits a respective laser beam, each laser beam having a beam shape with a greater width in a column direction than in a row direction on a light incident surface of each respective lens section. The lens sections have an inter-vertex distance in the row direction that is smaller than both (i) a maximum outer diameter of each of the lens sections, and (ii) an inter-vertex distance in the column direction. A curvature of the lens sections in the row direction is the same as a curvature of the lens sections in the column direction.

Abstract: A lens for directing light from an LED light source. The lens is formed by a plurality of layers and has a light-receiving inner-surface defining a pair of cavities. A portion of the inner-surface which defines one of the cavities is at least partially formed by an innermost layer of the plurality of layers. At least a portion of another of the plurality of layers extends inwardly between the pair of cavities. Another aspect of this invention is an optic member including a plurality of the lenses for directing light received from a plurality of spaced apart LED light sources.

Abstract: A method for producing an illumination device may include providing a plurality of optoelectronic semi-conductor components that each have a semi-conductor layer sequence for generating radiation where the semiconductor components each have at least one contact surface on one side and are held by a common carrier. The method may further include electroplating each contact surface of the semi-conductor components using a solder material, applying the semi-conductor components having the solder material to a substrate, and melting and soldering the contact surfaces onto the surfaces.

Abstract: Provided are a light distribution member, a lighting or signaling device having the same, and a motor vehicle.

Abstract: An upper face of a light guide includes a projected portion that has a planar face, and a wall portion that surrounds the projected portion, wherein a top part of the wall portion is positioned higher than the planar face. A lower face of the light guide has a recessed portion. A light transmitting part that has a lower refractive index than a reflective index of the light guide is disposed on the projected portion in an area surrounded by the wall portion. A light source is disposed in the recessed portion. The projected portion has an oblique face which is oblique to the planar face and disposed between the planar face and the wall portion. In a plan view of the planar face of the projected portion, the oblique face of the projected portion is positioned outward of a lateral face of the recessed portion at least in part.

Abstract: Luminaire housings for architectural, industrial and warehouse applications have extrusions with parallel flat sides connected by a cross member. The wireway can be enclosed by the extrusion's roof or by cover segments clamped over an open top extrusion. Wireway openings provide access to the wireway. Nuts slid into T-channels in the roof or cover segments provide for mounting or suspension via wall brackets, cables, and housing brackets. Threaded nipples accessible through the roof or cover segments provide for pendant stem mounting. Continuous run brackets can join housings end to end. Optical elements slid into slots and channels in the housing can be retained by end caps. A housing cover over the wireway can be clamped in place by screws threaded into fixture brackets retained within the housing. The housing grooves in the cover segments can slidably engage the extrusion until the cover segments are clamped in place.

Abstract: An adjustable, modular flood light fixture is provided herein which includes a plurality of light modules, each including an enclosure and a luminaire configured to generate light, the luminaire being pivotably mounted to the enclosure. The light modules are serially connected with the luminaires of the light modules being each independently, pivotably adjustable. Advantageously, with the subject invention, the size of an illuminated area may be controlled by the number of light modules being used, with pivoting adjustment allowing further control over how light from each of the light modules is directed.

Abstract: A lens comprises a light receiving side comprising grooves for receiving light emitting diodes, the grooves defined by a central refractive region and walls comprising total internal reflection faces; and a light extraction side opposite the light receiving side, wherein an axis bisecting the central refractive region forms an angle with a vertical axis of the lens ranging from greater than zero degrees to less than 90 degrees. In some embodiments, luminaire comprises an array of light emitting diodes; and the lens positioned over the array of light emitting diodes.

Abstract: An illuminating device can comprise two substrates each having two surfaces, one of each can be configured to mount solid-state lighting devices wherein the two substrates are separated by a defined gap. The two substrates are electrically and mechanically connected and can support or be supported with an enclosure such as an optic. This configuration provides thermal decoupling and uniform illumination when assembled as per the embodiments explained.

Abstract: The present invention provides a panel device for the under-display camera. The panel device includes a display panel, a backlight module, a light guiding member, and a light source member. The backlight module is provided with a first opening. The light guiding member is inserted into the first opening for guiding light entering the light guiding member to a display panel area corresponding to the first opening. The light source member provides a light source for the light guiding member. The light source member is turned off when the under-display camera is turned on, and the light source member is turned on or off when the under-display camera is turned off. Therefore, a through hole or a blind hole on the display panel can be re-displayed, and the image quality that can be obtained by the under-display camera is still maintained.

Abstract: A light diffusion lens improved in hot spot phenomenon and darkness phenomenon is disclosed, the light diffusion lens diffusing a light generated from an LED, including: a semi-spherical body formed with a glass material or a plastic material; an upper surface forming an upper outer shape of body; a lower surface forming a lower outer shape of body; an oval-shaped incident port formed at a center of lower surface to accommodate the LED; and an incident surface convexly formed from the incident port to an upper surface side.

Abstract: The disclosure is directed to an uplight assembly and a luminaire incorporating the same. The luminaire includes a housing having an upper cover at least partially defining an interior. The upper cover has an opening formed in a top wall facing a first direction. A primary light emitter is connected to the housing and facing a second direction opposite the first direction. A chassis is connected to the upper cover. A secondary light emitter is connected to the chassis. A reflector is connected to the chassis. Wherein the second light emitter and the reflector are configured to emit light through the opening.

Abstract: Airfield lights, components thereof, and associated methods. An airfield light can include one or more heat sink modules secured to a heat sink base to form a heat sink module on which light sources are mountable. A method includes assembling a heat sink and mounting light sources thereon. A platform of an airfield light permits mounting of a light assembly in a selected orientation on the platform.

Abstract: An LED lamp includes a shell, a holder, LED strings and a circuit board. The shell includes a top strip and two lateral strips each of which includes a curved section extending from the top strip, a hemi-circular section extending from the curved section, and a straight section extending from the hemi-circular section and including a reflective face. The holder is inserted in the shell and formed with a middle strip and two lateral strips each of which includes an upper section extending above the middle strip and a lower section extending below the middle strip. The lower section of each lateral strip of the holder is inserted in a groove defined by the hemi-circular section of a corresponding lateral strip of the shell. The LED strings are connected to the holder. The circuit board is connected to the holder.

Abstract: An embodiment relates to a light apparatus comprising: a first body having an inner peripheral side and an outer peripheral side; a diffusion member disposed on the first body; a cover disposed on the first body so as to cover the diffusion member; a second body disposed between the diffusion member and the cover and comprising a lower side and a lateral side which covers the lower side; and a light source member comprising a first circuit board, which is disposed on the lower side of the second body, a second circuit board, which covers the lateral side of the second body, at least one first light source which is mounted on the first circuit board so as to face the diffusion member, and at least one second light source which is mounted on the second circuit board so as to face the inner lateral side of the cover.

Abstract: An airfield light includes a light assembly mounted on a base and a transparent cover disposed over the light assembly and secured to the base. The light assembly includes a curved LED (light emitting diode) assembly having a circuit board with at least a portion that is curved along its length. A plurality of LEDs are spaced apart along the length of the circuit board and are configured to emit light through the transparent cover.

Abstract: A solid state lighting apparatus can include an electrical connector that is configured to releasably couple to a standardized electrical fixture having ac voltage provided thereat, where the electrical connector includes an opening that is configured to provide a recess in the electrical connector including an interior contact to provide the ac voltage in the recess when connected to the standardized electrical fixture. A protective circuit stage of a solid state lighting driver circuit can be in the recess to electrically coupled to the interior contact. An electrical wire can include a first portion that can be electrically coupled to the protective circuit stage in the recess and a second portion that is outside the recess. A solid state lighting housing can be configured to releasably couple to the second portion of the electrical wire.

Abstract: A lampshade including a frame and an optical function plate is provided. The frame includes an assembly portion. The optical function plate is detachably disposed to the frame through the assembly portion. Furthermore, a lamp including the above-mentioned lampshade is also provided.

Abstract: Described is an improved automated multisource LED array luminaire with an array-wide, rotating beam shaper.

Abstract: An indicator module in one example has a mounting portion to removably attach the module to another module or base. The indicator module also has a first set of electrodes disposed to be in contact with respective electrodes in the attached module or base. The indicator module further includes an indicator circuit, and a switch module configurable to selectively connect the indicator circuit to one of the electrodes in the indicator module. The indicator module can further include a second set of electrodes connected respectively to the first set of electrodes by conductors. The two sets of electrodes are located at respective ends of the module attach to another module at each end. In visual indicator modules, the conductors can be disposed in a more interior region of the module as compared to the visual indicator elements such as LEDs, which can be distributed near the periphery of the module.

Abstract: An LED illumination module including an LED lamp with a plurality of light emitting dies on a substrate in combination with an optic having a single focus. The light emitting dies include a single center light emitting die centered on an optical axis and peripheral dies arranged around the center die. The illumination module includes a beam forming optic having a single focus arranged over the LED lamp with the focus on the optical axis of the center die. Light emitted from the center die is substantially collimated by the optic in a focused “spot” emission pattern. Light emitted from the peripheral dies results in a more dispersed or divergent “flood” emission pattern. The center die and peripheral dies are independently controlled and the power delivered to the dies can be varied independently to generate different light emission patterns using the same optic.

Abstract: An LED illumination module including an LED lamp with a plurality of light emitting dies on a substrate in combination with an optic having a single focus. The light emitting dies include a single center light emitting die centered on an optical axis and peripheral dies arranged around the center die. The illumination module includes a beam forming optic having a single focus arranged over the LED lamp with the focus on the optical axis of the center die. Light emitted from the center die is substantially collimated by the optic in a focused “spot” emission pattern. Light emitted from the peripheral dies results in a more dispersed or divergent “flood” emission pattern. The center die and peripheral dies are independently controlled and the power delivered to the dies can be varied independently to generate different light emission patterns using the same optic.

Abstract: An illumination apparatus comprises a plurality of LEDs aligned to an array of directional optical elements wherein the LEDs are substantially at the input aperture of respective optical elements. An electrode array is formed on the array of optical elements to provide at least a first electrical connection to the array of LED elements. Advantageously such an arrangement provides low cost and high efficiency from the directional LED array.

Abstract: A support for a lighted decoration, the lighted decoration containing such supports, and a combination of a support including at least one light, is disclosed.

Abstract: The present disclosure discloses a lighting module including a light source module, a driving module, and an optical element and a lighting lamp. The light source module includes a light source plate and a plurality of Light-Emitting Diode (LED) light sources. Emergent light of the LED light source is emitted after passing through the optical element, and the optical element has a light incident portion and a light emergent portion. The driving module and the LED light source are respectively adhered to the light source plate and are integrated on the light source plate, the light incident portion of the optical element covers above the light source plate, receives the emergent light of the LED light source and carries out optical configuration on the emergent light of the LED light source, and the driving module is arranged in a periphery of the light incident portion of the optical element.

Abstract: In an embodiment the optical component includes an optoelectronic semiconductor chip including a radiation emission face, a deflection element configured to deflect electromagnetic radiation emitted by the optoelectronic semiconductor chip in a main emission direction which forms an angle deviating from 90° with the radiation emission face, wherein the deflection element is configured as a prism structure and an optical lens having an optical axis, wherein the optical axis forms an angle deviating from 90° with the radiation emission face.

Abstract: An enhanced illumination system is provided. In some configurations, an illumination system comprises one or more illuminators for emitting light. Light steering optical elements direct the light along diverging axes. In some configurations, the camera module assembly can cause an output to be tilted down or tilted up relative to a horizontal plane. In some configurations, the illumination system comprises diffusers positioned to receive light along the diverging axes, each diffuser producing a field of illumination having a predetermined angle. The illumination system can be mounted on a computing device, such as an HMD providing a field of view to a camera, sensor, and/or a user. By the use of the techniques disclosed herein, an illumination system can mitigate optical loss that may be caused by a curved visor positioned between the illumination system and an object in the field of view.

Abstract: A luminous system is disclosure. The luminous system is used for projecting light to a plane and includes a luminous component and an angle-adjustable device. The luminous component is used for generating the light ray. The angle-adjustable device is used for adjusting luminous angle of the light ray. The angle-adjustable device is arranged between the plane and the luminous component and located on the route of the light ray, the angle-adjustable comprises a first lens element, and the first lens element comprises a light-emitting portion and a light-incident portion connected to the light-emitting portion. The light-including portion comprises a recess opposite to the light-emitting portion. An outer diameter of the light-emitting portion is larger than an outer diameter of the light-incident portion, and the outer diameter of the light-incident portion decreases along a direct away from the light-emitting portion.

Abstract: One example modular electronic device of the present disclosure includes a frame and a plurality of electronic modules which are respectively removably received at a plurality of bays formed by the frame. The modular electronic device can enable a user to directly operate, interact with, remove, or otherwise manipulate the electronic modules without requiring the user to navigate through or otherwise interact with a graphical user interface. In particular, the modular electronic device can enable the user to operate, remove, or otherwise interact with the electronic modules by simply touching or pressing a particular electronic module.

Abstract: An apparatus and method is characterized by providing an optical transfer function between a predetermined illuminated surface pattern, such as a street light pattern, and a predetermined energy distribution pattern of a light source, such as that from an LED. A lens is formed having a shape defined by the optical transfer function. The optical transfer function is derived by generating an energy distribution pattern using the predetermined energy distribution pattern of the light source. Then the projection of the energy distribution pattern onto the illuminated surface is generated. The projection is then compared to the predetermined illuminated surface pattern to determine if it acceptably matches. The process continues reiteratively until an acceptable match is achieved.

Abstract: A lighting device may be provided that includes a plurality of single lighting modules that includes: a case including a bottom plate, a first side wall extending from one side end of the bottom plate and a second side wall extending from the other side end of the bottom plate; a light emitter disposed in the case and including a substrate and a plurality of light emitting devices disposed on the substrate; a reflective plate disposed in the case and disposed on the substrate of the light emitter; a diffuser plate disposed in the case, disposed on the light emitter and coupled between the first side wall and the second side wall; and a connecting member comprising a first connecting member extending from the first side wall of the case and a second connecting member extending from the second side wall of the case, and a bracket connecting adjacent two single lighting modules among the plurality of single lighting modules, wherein the bracket is disposed in a space formed between the two single lighting module

Abstract: LED lamp 10 includes a housing, a mounting base, a light engine (LE) 16, light-transmissive cover 20 circumscribing the LE, and reflector 18. The LE comprises a plurality of top-emitting LED packages (TE-LED packages) mounted on planar upper surface 32 of PC board 26, each configured to emit light having an angular distribution centered around a principal light-emitting direction (PLED) normal to an emission face 45. A first set 36 of TE-LEDs is mounted with its PLED perpendicular to PCB 26 and a second set 38 of TE-LEDs is mounted to the PCB with its PLED orthogonal to that of the first set 36 of TE-LEDs and parallel to upper surface 32. Reflector 18 disposed below LE 16 reflects light towards cover 20. A polar light distribution of light emitted from LED lamp 10 is omnidirectional and is Energy Star compliant.

Abstract: A light device comprises an elongated light guide (2) and a LED source (1) seated in the light guide entry part (3) for emitting the light beam into the light guide (2). The entry part of the light guide comprises mutually intersecting parts of at least two ellipsoids (11, 21) arranged with their main axes (14, 24) next to each other. The LED light sources are fitted in the first focuses (15, 25) of the ellipsoids for emission of light beams and their reflection from the elliptic walls (13, 23) thereof to the second focuses (16, 26) thereof, laying inside the light guide in different distances from the first focuses. The distance between the first focus (15) and the second focus (16) of the first ellipsoid (11) preferably equals at least 1.5 times the distance between the first focus (25) and the second focus (26) of the second ellipsoid (21).

Abstract: A luminaire that includes a plurality of light emitting diodes (LEDs), a light diffuser having a planar surface facing the LEDs, and a reflector that surrounds a cavity formed between the light diffuser and the LEDs. Also disclosed is a light distribution system having a first plurality of lenses configured to convert incident light into a light distribution pattern and a second plurality of lenses configured to convert incident light into a different light distribution pattern. Further disclosed is a method of distributing light that involves emitting light towards a light diffuser, scattering a first portion of the light with the light diffuser, reflecting a second portion of the light with the light diffuser, reflecting the second portion of the light with a first reflective surface back towards the light diffuser, and scattering the second portion of the light with the light diffuser.

Abstract: This light flux control member comprises: two entry surfaces disposed on two sides of a virtual plane serving as a boundary and containing the optical axis of the light-emitting element; a first protruding strip disposed between the two entry surfaces and along the virtual plane, into which light that has exited the light-emitting element enters; two total reflection surfaces, each formed at a position facing the light-emitting element with one of the entry surfaces sandwiched therebetween; two light-guide portions disposed at opposite positions with the first protruding strip sandwiched therebetween; and an exit surface formed on the external surface of each of the light-guide portions. A second light flux control member is disposed so as to cover the first protruding strip and includes a diffuse transmission portion whereby light that has entered and exited the first protruding strip is transmitted while being diffused.

Abstract: A luminous module, especially for an automotive vehicle, comprising a body made of translucent or transparent material with: an entrance face for light rays produced by one or more light sources; an exit face for light rays in an exit beam; and a face for reflecting light rays coming from the entrance face, toward the exit face. The body comprises at least two distinct optical exit zones.

Abstract: An indicator module in one example has a mounting portion to removably attach the module to another module or base. The indicator module also has a first set of electrodes disposed to be in contact with respective electrodes in the attached module or base. The indicator module further includes an indicator circuit, and a switch module configurable to selectively connect the indicator circuit to one of the electrodes in the indicator module. The indicator module can further include a second set of electrodes connected respectively to the first set of electrodes by conductors. The two sets of electrodes are located at respective ends of the module attach to another module at each end. In visual indicator modules, the conductors can be disposed in a more interior region of the module as compared to the visual indicator elements such as LEDs, which can be distributed near the periphery of the module.

Abstract: A variety of light-emitting devices are disclosed that are configured to output light provided by a light-emitting element (LEE). In general, embodiments of the light-emitting devices feature two or more light-emitting elements, a scattering element that is spaced apart from the light-emitting elements, an extractor element coupled to the scattering element, and a reflective element that is configured and arranged to reflect light emitted from the light-emitting elements.

Abstract: A lighting apparatus for vehicles with a plurality of light sources and with a defined light distribution. The optical unit has an upstream optical unit with upstream optical elements allocated to the respective light sources, which are immediately adjacent to the light sources in the primary emission direction upstream of same. The majority of upstream optical elements have a segmented embodiment and is connected by joining.