Abstract: According to at least one aspect, a lighting device is provided. The lighting device comprises a circuit board, an LED mounted to the circuit board that is configured to emit light with an angular CCT deviation, a lens assembly mounted to the circuit board over the LED and configured to receive the light emitted from the LED and reduce the angular CCT deviation of the light received from the LED to make a color temperature of the light received from the LED more uniform, and an elastomer encapsulating at least part of the circuit board that is separate and distinct from the lens assembly.

Abstract: A display device includes a backlight unit including: a substrate; a Light Emitting Diode (LED) disposed on a surface of the substrate; and a refractive cover configured to surround the LED. The refractive cover includes: a first refractive surface to: be spaced apart from the LED by a preset distance, be positioned on the upper surface of the substrate, be parallel to an axis of the LED or be inclined within one angle from the axis of the LED; a second refractive surface to be a curved surface in which an angle between a tangent line and the axis of the LED increases from a region connected to another upper portion of the first refractive surface toward a direction of the axis of the LED; and a third refractive surface to be connected to an portion of the second refractive surface and be perpendicular to the axis of the LED.

Abstract: A lamp for producing a collimated light beam includes at least one light source disposed on a casing, a retaining plate having at least one opening for accommodating an optical assembly. The optical assembly includes an upper portion having a convex shaped lens, a bottom portion having an upper wall configured as a concave shaped lens and having an aperture. The optical assembly further includes an inverted dome shaped shell defined by lateral walls and a refractive wall and a domed portion having the convex shaped lens extending outwardly from the lamp.

Abstract: A light modifying apparatus is provided, which may comprise a curved outer layer comprising a substrate configured to modify light, wherein the curved outer layer may have an arc of length X. A second curved me be disposed on, or in close proximity to the back surface of the outer layer, and wherein the second curved layer may have an arc of length Y wherein length Y is less than length X, and wherein the second curved layer may comprise a substrate comprising one or more surfaces comprising a lenticular lens configuration. An optional third layer may be provided which may comprise a substrate comprising one or more surfaces comprising a lenticular lens configuration.

Abstract: A light panel retrofit system includes an LED panel with an underside, and having LED panel lens circumscribed by an LED panel frame; a power supply is mounted to the LED panel; and an LED panel support frame configured to support the LED panel frame, and including first and second end frame members connecting first and second side rails to each other.

Abstract: The present disclosure relates to an asymmetric diffusion lens for a backlight unit, which includes a diffusion part of which an upper surface has an elliptical shape having a major axis and a minor axis, and a lower surface has a circular shape, a concave accommodation part provided at a center of the lower surface of the diffusion part to provide a space in which an LED package is accommodated, an incidence surface which is a boundary surface between the concave accommodation part and the diffusion part, and an exit surface as side surfaces and the upper surface of the diffusion part.

Abstract: Josephson transmission lines (JTLs) for superconducting devices and related methods are provided. In one example, a device comprising a JTL for propagating quantum pulses in a first direction in response to an application of a clock signal having a plurality of phases is provided. The JTL may include a first inductive element coupled between a first terminal and a second terminal, a first Josephson junction (JJ) coupled between the second terminal and a ground terminal, a second inductive element coupled between the second terminal and a third terminal, and a second JJ coupled between the third terminal and the ground terminal. The second inductive element is configured to form an inductive loop, and the inductive loop may be configured to operate in a mode such that a quantum pulse cannot travel in a second direction opposite from the first direction regardless of a phase of the clock signal.

Abstract: A light source module includes a substrate, a light source mounted on the substrate, an optical device disposed on the light source, a support extending from a surface of the optical device facing the light source and fixed to the substrate, and a protrusion extending from and around a side surface of the support.

Abstract: An optical system for producing uniform illumination on a target, comprising a lens body (204), a recess (202) formed on a bottom side of the lens body (204) at a central region thereof accommodating a light source arranged in an integration zone (206), the recess (202) having a side entry surface (208) and a central entry surface (210), a total internal reflection surface (212) provided at a side surface of the lens body (204), wherein the total internal reflection surface (212) comprises a plurality of first lenslets (216); and an exit surface (214) provided at a top side of the lens body (204), the exit surface (314) comprising a plurality of second lenslets (218), wherein each of the first lenslets (216) forms a pair (220) with each of the second lenslets (218), wherein the first lenslet (216) of the pair (220) focuses light from the integration zone (206) upon the second lenslet (218) of the pair (220), and wherein the second lenslet (218) of the pair (220) focuses the target upon the first lenslet (216)

Abstract: An example embodiment of substrate tensioning system is disclosed that may comprise a frame including four sides and channels, wherein the channels may comprise a first surface, a second surface that opposes the first surface, and an edge truss retention feature. The substrate tensioning system may further comprise at least one substrate including four major edges and a first surface, wherein each major edge is configured with one or more edge trusses configured from corresponding folds in the at least one substrate, such that the edge trusses may be configured at an angle relative to the first surface of the substrate. The at least one substrate may attach to the frame, wherein each edge truss may nest inside, and be secured inside a corresponding frame channel, wherein a perimeter edge of each outermost edge truss may be engaged by the corresponding frame channel's edge truss retention feature.

Abstract: A luminaire heat sink housing (40) which has a lens locking clip (20) which retains the lens (30) against a gasket (50). Both the hinged locking clip (20) and the heat sink housing (40) may be extruded to any desired length and allows the lens be readily removed. The hinged locking clip (20) extends along a side of the housing (40) and lockingly slides into place to bias the lens (30) against a gasket (50) and seals the light engine within the interior of the heat sink housing. The locking clip is removable from the housing and includes a locking clip rotation head, lens retention surface and locking head to affix the lens in position against the gasket and in front of the LEDs (55).

Abstract: Certain example implementations of the disclosed technology include a light emitting device. The light emitting device may include an enclosure with four sides and a top edge surface associated with each of the four sides. The enclosure may be capable of mounting on a grid frame of a suspended ceiling such that a portion of the top edge surfaces contacts a portion of the grid frame. The light emitting device may further include a light modifying element characterized by a substrate with four or more edges, a back surface disposed on the top edge surface of each of the four sides of the enclosure, and a front surface. In certain example embodiments the substrate may further comprise two or more edge trusses. A periphery of the light-emitting front surface may be capable of contacting the grid frame after the light emitting device is mounted to the grid frame.

Abstract: A reflector assembly for eliminating unwanted stray lights comprising a reflector body having a reflector body focal point on a reflector body optical axis where a light source is positioned and a front opening for receiving a lens, wherein the lens is configured to reflect light rays which emanate from the light source to strike the lens to the reflector body which is configured to reflect the light rays reflected by the lens back to the light source, and to reflect light rays which emanate from the light source and reflected by the reflector body to strike the lens back to the light source.

Abstract: The present invention relates to a member for controlling luminous flux including an incident surface receiving light, a reflective surface reflecting the incident light, and a light emitting surface emitting the reflected light to a bottom surface of a plane perpendicular to a central axis connecting a center of the incident surface and a center of the reflective surface, and to a display device and a light emitting device, whereby performance of display device can be enhanced.

Abstract: A lens includes a first lens section and a second lens section, which are integrally formed. The first lens section is formed in a hemispherical shell shape including a first recess opened toward one side of an optical axis direction in which light from a light source is made incident. The second lens section is formed in a hemispherical shell shape including a second recess opened toward the other side of the optical axis direction.

Abstract: An LED module for a luminaire has a downwardly directed heat sink comprising cooling fins that extend rearward from the module's front end and downward from its top wall, which has a top face that abuts the underside of a luminaire carrier plate. A circuit board carrying at least one LED is mounted on the front face, and a prism is mounted to the heat sink over the LED(s). The front (light-emitting) face of the catadioptric prism has several prominent side-by-side sections which emit beam patterns that diverge laterally and overlap in a central region. A prominent full-width upper section on the front face emits a primarily downwardly directed beam pattern to help fill in dark spots.

Abstract: A lens for an illumination device, in a cross section, includes a bottom surface, and a first side surface and a second side surface which respectively extend inclinedly upwards from two sides of the bottom surface and converge. The bottom surface includes a supporting surface and an incident surface, the incident surface defining an accommodation cavity for accommodating a light source of the illumination device. The first side surface includes a first emergent surface and a first reflective surface, the second side surface includes a second emergent surface. A first part of light from the incident surface emerges from the first emergent surface, and a second part of light from the incident surface at least emerges from the second emergent surface after reflected by the first reflective surface, such that the emergent light is distributed at an angle of 360°.

Abstract: The present invention discloses a light assembly, which includes a transparent main body and a lens. The transparent main body includes an interior chamber gradually expanding from bottom to top, an inner wall encircling the interior chamber, and an outer wall encircling the inner wall. The outer wall is a total internal reflection surface. The inner wall includes a plurality of first facets facing a first direction and a plurality of second facets facing a second direction which is different from the first direction. The first facets and the second facets are provided to encircle the interior chamber respectively. Either side of each of the first facets is connected to one of the second facets, and each of the two adjacent first facet and second facet form an angle therebetween. The lens is fitted into the main body and faces the interior chamber of the main body.

Abstract: In an illuminating device, when exiting lights come out from a lens sheet, the optical paths of the exiting lights are deflected in a direction opposite to an optical axis of a light source by means of a plurality of prisms which are included in a first lens group arranged on an inward side of the lens sheet located adjacent to the optical axis of the light source and each of which has a inclined face facing toward the optical axis of the light source, wherein the exiting lights from the light source via the first lens group of the lens sheet are adapted to mix with exiting lights from the light source via a second lens group located outside the first lens group, whereby the degree of color unevenness is reduced, that appears inherently when a pseudo white LED is used as the light source of the illuminating device.

Abstract: An LED module for a luminaire has a downwardly directed heat sink comprising cooling fins that extend rearward from the module's front end and downward from its top wall, which has a top face that abuts the underside of a luminaire carrier plate. A circuit board carrying at least one LED is mounted on the front face, and a prism is mounted to the heat sink over the LED(s). The front (light-emitting) face of the catadioptric prism has several prominent side-by-side sections which emit beam patterns that diverge laterally and overlap in a central region. A prominent full-width upper section on the front face emits a primarily downwardly directed beam pattern to help fill in dark spots.

Abstract: A laser-sustained plasma illuminator system includes at least one laser light source to provide light. At least one reflector focuses the light from the laser light source at a focal point of the reflector. An enclosure substantially filled with a gas is positioned at or near the focal point of the reflector. The light from the laser light source at least partially sustains a plasma contained in the enclosure. The enclosure has at least one wall with a thickness that is varied to compensate for optical aberrations in the system.

Abstract: A side-emitting LED lens includes a bottom surface having an incident surface through which light from the LED enters, a top surface that reflects light, and a side surface which connects the bottom surface to the top surface, and through which light exits the lens. Within the incident surface, a central area directs light emitted from the LED to the top surface by refracting the light in a direction away from the optical axis, whereby the height of the lens can be reduced. A surrounding area connected to the central area directs light emitted from the LED to the top surface by refracting the light in a direction toward the optical axis, whereby the width or radius of the lens can be reduced.

Abstract: A camera flash module is provided. The camera flash module may include a lens having a single refractive surface and a reflector that adjusts a direction of a light emitted from the lens. Accordingly, maintaining of a distance between a light emitting device and the lens may not be needed and thus, the camera flash module may be readily manufactured and a productivity may be improved. An error rate caused by distortion in a tilt and an optical axis between the light emitting device and the lens may be reduced. The reflector may adjust a direction of a light emitted from the lens and thus, an emission pattern requested by a camera may be satisfied, and a velocity of light may be improved. The reflector may surround the lens and thus, may prevent the lens from being detached from a light emitting device package body when an external impact occurs.

Abstract: Methods and apparatus for an optical lens (10, 110) suitable to provide an asymmetric light output pattern when utilized in combination with at least one LED. The optical lens (10, 110) may include a revolved section (20, 120) having and an extruded section (40, 140) extending from the end of the revolved section (20, 120). One or more surface features may optionally be applied to portions of the outer surface of the optical lens (10, 110).

Abstract: A lamp is provided which is suitable for use in low-profile applications. The lamp includes a light source and a lens. The lens includes a first surface opposite a second surface, where the second surface includes an injection surface and the first surface includes a multi-faceted optical element converging towards the injection surface. The light source injects light into the lens via the injection surface and the light refracts through the first surface while total internally reflecting off the first surface and the second surface toward the periphery of the lens.

Abstract: A lighting device, in particular in the form of a ceiling, wall, floor or outside light, having a punctiform light source, preferably in the form of an LED, and a lens assigned to the light source, which has a light entry recess in the form of a bowl or blind hole, which deflects at least part of the incident light, indirectly or directly, onto a totally reflecting and/or mirrored lateral surface, which in turn deflects the light onto a light exit surface, which forms a front side of the lens located opposite the light entry recess. The lateral surface of the lens, which deflects the light coming directly or indirectly from the light entry surface onto the light exit surface by means of total reflection and/or mirroring, is provided with a multiplicity of facets.

Abstract: An optical element according to the present invention includes a light receiving surface which is designed to cover an emitting surface of a planar light source device, a reflecting surface, a light exit surface which is contiguous to the periphery of the reflecting surface. When the center of the emitting surface is designated as a point O and an axis which passes through the point O and is perpendicular to the emitting surface is designated as an optical axis of the optical element, the reflecting surface has a concave portion around the optical axis and an outer edge surrounding the concave portion.

Abstract: A display apparatus includes a panel module and a backlight module. The backlight module is disposed under the panel module. The backlight module includes a frame, a light guide plate, and a reflector. The frame supports the edge of the light guide plate. The reflector is disposed at the bottom of the light guide plate. The edge of the reflector and the edge of the frame horizontally form an engaging seam without overlapping, and the engaging seam is substantially in a serrated shape.

Abstract: A secondary optical lens for a lamp is provided, in which the length of one of two axes passing the center of the bottom surface of the lens has minimal value and the projection surface is formed integrally in a three dimensional shape similar to the bottom surface wherein uniform light distribution with at least one curvature point is realized to resolve public nuisance due to stray light and dazzling in diverse indoor and outdoor environments. In addition, the brightness of lighting and energy efficiency may be improved through uniform lighting distribution. Moreover, the bottom surface of the lens and the projection surface can be fabricated with single molding process, so manufacturing process may be simplified and production cost saving is available.

Abstract: A lens for covering a light source to diverge light from the light source includes a first curved surface facing the light source, a second curved surface covering the first curved surface, and a connecting surface interconnecting bottoms of the first curved surface and the second curved surface. A plurality of first protrusions and second protrusions are formed on the connecting surface. The first protrusions and the second protrusions each are semi-terete. The first protrusions are parallel to and spaced from each other. The second protrusions are parallel to and spaced from each other. The first protrusions intersect the second protrusions.

Abstract: The present invention provides an illumination lens which suppresses a change of an illuminance distribution following a change of an arrangement position of a light source with respect to the illumination lens. A reflection surface and emission surface of the illumination lens are configured to refract and emit, in the emission surface, second illumination light and third illumination light with refracting power of different signs. By changing an illuminance distribution of third illumination light to cancel the change of an illuminance distribution of the second illumination light when a light source is moved, it is possible to suppress the change of the illuminance distribution small even when the light source is moved back and forth.

Abstract: A light exit surface of an illuminating lens has a first light exit surface and a second light exit surface. The first light exit surface is recessed toward a point on the optical axis, and the second light exit surface extends outwardly from the periphery of the first light exit surface. The first light exit surface has a transmissive region and a total reflection region. When the position of a light source on the optical axis is defined as a starting point, the transmissive region transmits light that has been emitted from the starting point at a relatively small angle with respect to the optical axis, and the total reflection region totally reflects light that has been emitted from the starting point at a relatively large angle with respect to the optical axis.

Abstract: An illuminating lens includes a main body and a ring portion. The main body has a light exit surface, and the light exit surface has a first light exit surface recessed toward a point on the optical axis and a second light exit surface extending outwardly from the periphery of the first light exit surface. The first light exit surface has a transmissive region in the center thereof, and a total reflection region on the peripheral side thereof. The ring portion has a back surface configured to guide the light that has been emitted from a light source, totally reflected repeatedly at the light exit surface, and then entered the ring portion to an end surface by total reflection.

Abstract: A light exit surface of an illuminating lens has a first light exit surface and a second light exit surface. The first light exit surface is recessed toward a point on the optical axis, and the second light exit surface extends outwardly from the periphery of the first light exit surface. The first light exit surface has a transmissive region and a total reflection region. When the position of a light source on the optical axis is defined as a starting point, the transmissive region transmits light that has been emitted from the starting point at a relatively small angle with respect to the optical axis, and the total reflection region totally reflects light that has been emitted from the starting point at a relatively large angle with respect to the optical axis. A reflective layer is formed on a bottom surface that surrounds a light entrance surface and faces oppositely to the light exit surface.

Abstract: The present invention relates to a light emitting device 100 which employs light sources 102 having a narrow or limited light intensity distribution, and which device is arranged for redistributing the light from the light sources and outputting a light with a broader spatial light intensity distribution via a circumferential light output surface 115 arranged on a funnel-shaped light output portion 112. The light emitting device further comprises a light mixing portion 120 for mixing the light emitted from the light sources 112 before entering into the light output portion 112.

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: Disclosed is a light adjusting lens for adjusting light emitted from an LED, the light adjusting lens being a left-right symmetric lens structure formed of an amorphous polymer material selected from a glass material, PC, PMMA, and COC and having a body an entire interior of which is filled, the light adjusting lens including: an icicle inner surface forming an inner line of the body and having a light adjusting boss at a central portion thereof in the form in which a peak and a gully are formed deeply; and a light diffusing outer surface in which a light diffusion expanding induction for inducing expansion of diffusion of light is formed by slowly recessing the central portion of the aspheric structure, wherein diffusion of light is adjusted through dual processing of refraction and internal reflection by the icicle inner surface and the light diffusing outer surface.

Abstract: A light emitting device having a simple structure and high decorating characteristics is provided. The light emitting device comprises an emission source for outputting lights having different colors from different emission parts; and a transmitting resin having a conically shaped reflection surface for reflecting lights output from each of the emission parts, and covering the light emitting source, wherein the emission source is provided so that one or more of the emission parts are located away from a central axis of the conical shape.

Abstract: A lens for wide lateral-angle distribution of light from an LED light source on a board and defining an axis. The lens includes a board-adjacent base spaced from and around the axis, an inner light-receiving surface, an intermediate surface and an outer output surface configured for refracting light received from the inner and intermediate surfaces. The base forms an opening into a light-receiving cavity defined by the inner surface which includes (a) substantially planar front and back surface portions each extending from the opening and (b) an end surface portion spanning the cavity between the front and back surfaces and comprising front and back segments extending inwardly from the front and back surface portions, respectively, and each angled with respect to the other. The intermediate surface is positioned and configured for reflecting light received from the inner surface toward the outer output surface.

Abstract: An LED module for a luminaire has a downwardly directed heat sink comprising cooling fins that extend rearward from the module's front end and downward from its top wall, which has a top face that abuts the underside of a luminaire carrier plate. A circuit board carrying at least one LED is mounted on the front face, and a prism is mounted to the heat sink over the LED(s). The front (light-emitting) face of the catadioptric prism has several prominent side-by-side sections which emit beam patterns that diverge laterally and overlap in a central region. A prominent full-width upper section on the front face emits a primarily downwardly directed beam pattern to help fill in dark spots.

Abstract: An optical element for a side emitting light that emits light from a light source at side directions relative to the horizon is disclosed. The optical element has an internal recess adapted to fit over a light source. The internal recess includes a collimating surface and interior refractive surfaces. An exterior refractive surface corresponding to the interior refractive surfaces is provided. A faceted prismatic reflecting surface corresponding with the collimating surface is provided. Light at a substantially horizontal angle relative to the horizon is emitted through the interior refractive surface through the exterior reflective surface to a side direction and light at a substantially vertical angle relative to the horizon is collimated by the collimating surface and reflected by the reflecting surface in the side direction.

Abstract: An illuminating lens includes a light entrance surface, a light exit surface, and a reversing surface. The light exit surface has a first light exit surface and a second light exit surface. The first light exit surface is recessed toward a point on the optical axis, and the second light exit surface extends outwardly from the periphery of the first light exit surface. The first light exit surface includes a transmissive region in the center thereof and a total reflection region on the peripheral side thereof. The reversing surface has a shape such that the light that has been emitted from the light source, totally reflected repeatedly at the light exit surface, and then reached the reversing surface is guided to the first light exit surface by total reflection.

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: A LLB bulb includes a base, a LED light source configured to emit electromagnetic radiation, and a lens/cover having a light extracting rough surface pattern (LERSP) configured to reduce glare and reflection in the LLB bulb without light loss. A method for fabricating the LLB bulb includes the steps of providing the lens/cover, and forming the light extracting rough surface pattern (LERSP) on the lens/cover. The lens/cover can be fabricated with the light extracting rough surface pattern (LERSP) using a process such as bead blasting, sand blasting, etching (chemical or plasma), or molding.

Abstract: A solar-powered airfield light provides high angle light up to about 90°. A solar panel is mounted atop the enclosure but does not overlie a curved transparent shoulder extending upward from the transparent generally cylindrical side walls of the enclosure. An optical element within the enclosure surrounds an LED light source so as to direct light emanating from the LED in two preferential beams, one directed to the shoulder and the other directed to the side walls. A portion of the light impinging on the curved shoulder is redirected to high angles to comply with high angle light requirements for airfield lights.

Abstract: A lighted stanchion cover for use with a stanchion for the purpose of providing illumination in dark conditions. The cover assembly comprising an elongated tubular body and a lighting assembly. The lighting assembly further comprising a light source and a power source. The elongated tubular body has an open end, a closed end, and an interior cavity. The interior cavity of the tubular body is dimensioned to receive a stanchion through its open end. A lighting assembly is disposed within the tubular body in a manner that does not interfere with the reception of the stanchion into the interior cavity of the tubular body. The lighted stanchion cover can be adapted to receive power from an integrated or external source. The tubular body can be customized to display messages or advertisements that can be easily seen in dark conditions.

Abstract: A headlamp in an automobile, which is rotatable about a yaw axis when negotiating a bend, has a controller for controlling the rotary movement. In order to improve the illumination of a roadway lying in front of an automobile, the controller may take into account a driving profile.

Abstract: The light-emitting apparatus (1) of the present invention includes: a storage case (12) that includes a base board (10) having a concave portion (10a) and a lid portion (11) covering the concave portion (10a); and a plurality of light-emitting elements (13) that are disposed on an inner surface (12a) of the storage case (12), an opening (11a) is formed in the lid portion (11), at least a part of the inner surface (12a) is a light-reflecting surface that wave-guides light emitted by the light-emitting elements (13) as light sources to a position directly underneath the opening (11), and a reflecting portion (15) that reflects the light emitted by the light-emitting elements (13) as the light sources toward the opening (11a) is formed directly underneath the opening (11a). Thereby, the light-emitting apparatus having a point light source with high brightness can be provided.

Abstract: This light emitting diode (LED) device provides a 360 degree lighting angle in the horizontal plane and a 300 degree lighting angle in the vertical plane while simultaneously addressing LED die thermal management, which is critical to high lumen output LEDs. This LED lighting device is comprised of the LED lens, the LED holder and the heat sink stem. Light produced by at least one LED die traveling vertically is diffused by the top refractive portion of the lens. Light rays directed towards the pointed elements are totally internally reflected downwards then refracted out of the lens, thus resulting in a spherical light pattern. This technology is designed as a replacement for conventional light sources, such as incandescent light bulbs, halogen bulbs, CFLs (compact fluorescent lamps) and metal halide lamps.

Abstract: A lamp (10) has a cup-shaped body (12) with a planar bottom (14) with an up-standing, peripheral sidewall (16) defining a top (18). The body (12) is thermally conductive and preferably is a metal such as aluminum. A reflective coating (20) is provided on the inside surface of the planar bottom (14) and side wall (16) for reflecting light generated by a single, side emitting LED (22) that is mounted on a thermally conductive, electrically insulating coupling (24) and is positioned substantially in the center of the planar bottom (14). A lens (26) for directing a beam of light emitted from the LED (22) in a desired direction is provided and preferably is a Fresnel optic. The lens (26) can close the opening (18) as shown in FIG. 1 or it can be formed as an integral part of bottom (14) or it can be added to the bottom (14), as shown in FIG. 2. Alternatively, the lens (26) can be solid with the lens elements either external (FIG. 4) or internal (FIG. 5).