Abstract: An illuminating device in which stray lights are prevented and light distribution design is easy by making it possible to receive lights emitted from an LED lamp with an external reflecting mirror as much as possible is provided. A reflecting mirror having a concave reflecting surface reflecting an incident light, a light emitting element, and a lens molding a light emitting element therein and having a lens surface opposed to a light emitting surface of the light emitting element, the lens surface being in a slope shape with its central portion being projected to the light emitting element are included, and the reflecting surface of the reflecting mirror and the light emitting surface of the light emitting element are disposed to be opposed to each other with the lens surface of the lens therebetween so that light emitted from the light emitting element is reflected at the lens surface to be emitted outside the lens to be incident on the reflecting surface of the reflecting mirror.

Abstract: A luminous flux control member can stabilize an optical performance, make manufacturing easy and improve efficiency of use of light at the same time. A reflection surface (15) is formed in a surface shape, so that an extreme end section of the reflection surface (15) that is the most distant from an emission area (5) is positioned further inward in the radial direction than a base end section that is the closest to the emission area (5), and the reflection surface (15) intersects once a virtual surface that is inclined with respect to an optical axis connecting between the extreme end section and the base end section. The surface shape suppresses an offset of a light distribution of light emitted from the emission area (5) from a designed light distribution due to an offset between an optical axis and the center axis of light emitted from a light source.

Abstract: A surface light source device includes a diffusing member which diffuses light, a reflective member which reflects light, plural light sources provided aligned in a flat manner between the diffusing member and the reflective member, and a light control member provided between the plural light sources and the reflective member as well as arranged in a state that a gap is imposed between the reflective member and the light control member, which has a light-guiding function of guiding part of light emitted from respective light sources in an alignment direction of the light sources, in which the light control member has a rugged structure portion in which geometric shapes in cross section are continuously formed on at least one surface.

Abstract: A nonimaging light assembly for flashlights, including a light source and a lens symmetrical about an optical axis for receiving light from the light source and producing therefrom a light beam having concentrated and divergent components resulting in a high intensity core beam surrounded by a smoothly transitioning lower intensity surround beam. In a preferred embodiment utilizing a light emitting diode as the light source, the combined light beam produced by the light assembly has a substantially circular cross section. In a preferred embodiment including a hybrid LED light source having a white-light die and an infrared die, a lens optimized with the white-light die produces a satisfactory IR beam having concentrated and divergent components when used with the IR die.

Abstract: An illuminating device includes a light source module for emitting light and an optical lens for adjusting the light. The light source module includes a reflecting unit and LEDs. The reflecting unit includes strip-shaped grooves each extending along a first direction. The LEDs are mounted on the reflecting unit in the grooves. The optical lens includes an array of lens units each including a main body, a light diverging portion and a light converging portion. The light diverging portion is for expanding a light field of the LEDs along the first direction. The light converging portion is for compressing the light field along a second direction. The reflecting unit is for further compressing the light field along the second direction.

Abstract: A fog lamp may include a Lambertian LED, a collimating lens encompassing the Lambertian LED, a collimating surface including a total internal reflective surface and encompassing the collimating lens, and a corrugated surface attached to the collimating surface at an acute angle with respect to an optic axis of the corrugated surface.

Abstract: A lighting device can be configured to prevent light beams emitted from a light source from passing through an outer peripheral surface of a lens and from being projected outside of the illumination direction of the lighting device. In the lighting device, the light source can be disposed within a lighting chamber defined by a substrate and the lens. The lens can have a lens cut portion on the rear surface thereof. A reflection surface can be formed in the outer peripheral surface of the lens. The substrate can also have a reflecting portion configured to project light beams reflected by the outer peripheral surface of the lens in the illumination direction. The reflecting portion can be disposed on the front side of the substrate.

Abstract: A nonimaging light assembly for flashlights, including a light source and a lens symmetrical about an optical axis for receiving light from the light source and producing therefrom a light beam having concentrated and divergent components resulting in a high intensity core beam surrounded by a smoothly transitioning lower intensity surround beam. In a preferred embodiment utilizing a light emitting diode as the light source, the combined light beam produced by the light assembly has a substantially circular cross section.

Abstract: An optical plate includes a light output surface and a bottom surface opposite to the light output surface. The light output surface defines a plurality of triangular pyramidal depressions and a plurality of four-sided pyramidal depressions. Each four-sided pyramidal depression is surrounded by four triangular pyramidal depressions.

Abstract: A prism sheet including a transparent substrate, a plurality of prism rods and at least one optical grating structure is provided. The transparent substrate has a first surface and a second surface opposite to the first surface. The prism rods are disposed on the first surface, wherein each of the prism rods extends along a first direction, and the prism rods are arranged along a second direction. The optical grating structure is disposed on the first surface and located between two adjacent ones of the prism rods, wherein the optical grating structure extends along the first direction. In addition, a backlight module using the above-mentioned prism sheet is also provided.

Abstract: An LED spotlight has an arrangement having at least one LED, above which there is arranged a color conversion substance, and an optical system of a substantially transparent material, which directs incident light from the LED arrangement in the direction of an exit surface by means of total internal reflection. The base surface of the conical optical system may thereby have the shape of a polygon. The outer wall of the conical optical system may have at least in partial regions planar facets. The color conversion material may be provided in the shape of a cuboid above the LED arrangement.

Abstract: A laterally emitting radiation-generating component comprising a radiation source, the optical axis of which runs perpendicular to a mounting area of the component, and comprising an optical device arranged downstream of the radiation source. The optical device includes a reflective surface shaped like a V in cross section and a refractive surface that is shaped convexly as seen externally and is arranged between the reflective surface and a bottom area facing the radiation source. The bottom area is arranged and formed in such a way that through it electromagnetic radiation from the radiation source couples into the optical device. The reflective surface is arranged and formed in such a way that a central first portion of the coupled-in radiation is deflected toward the refractive surface by the reflective surface.

Abstract: The present invention provides an optical component, a manufacturing method of the same and a backlight module including the foregoing optical component. The optical component includes a plurality of microstructures and reflecting members. The microstructure is extended along a first direction and arranged along a second direction on a light exit surface, and a distance between the first curve and the second curve in the second direction is not equal and not parallel, and a distance between the second curve and another first curve in the second direction being not equal and not parallel. Each reflecting member is extended along the first direction and arranged along the second direction on a light entrance surface and the position of each reflecting member is among two microstructures.

Abstract: A low upright cutoff classification acorn style luminaire is described. The acorn style luminaire has a globe which has a top positioned thereon and which is mounted to a pole. Integrated within the luminaire is the lamp support and lamp, the lamp substantially surrounded and enclosed by a reflector. The interior surface of the globe has a plurality of substantially vertically extending prisms along a curved surface thereof, the prisms working in conjunction with the reflector to provide cutoff classification for the acorn style luminaire.

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 device having an inner surface with a combination of reflective and refractive surface facets swept about an axis of revolution perpendicular to the optical axis of the device. The outer surface has a non-planar, non-circular, non-spherical shape. This outer surface generates an appropriate intensity distribution in a direction generally parallel to the major axis of the output rectangle and may also distribute energy generally parallelly to the minor axis of the output rectangle as well.

Abstract: A light source includes an extended light source, a first optical element, and a second optical element. The first optical element is coupled to the extended light source. The second optical element is coupled to the first optical element. The second optical element has a central reflective member and a refractive member surrounding the central reflective member.

Abstract: The present invention relates to a side illumination lens and a luminescent device using the same, and provides a body, a total reflection surface with a total reflection slope with respect to a central axis of the body, and a linear and/or curved refractive surface(s) formed to extend from a periphery of the total reflection surface; and a luminescent device including the lens. According to the present invention, a lens with total internal reflection surfaces with different slopes, and a linear and/or curved refractive surface(s) allows light emitted forward from a luminescent chip to be guided to a side of the lens. Further, a linear surface(s) formed in a direction perpendicular or parallel to a central axis of a lens and a curved surface are formed on an edge of the lens so that a process of fabricating the lens is facilitated, thereby reducing a defective rate and fabrication costs of the lens.

Abstract: An illuminating apparatus includes a light source including a cylindrical light-emitting tube, a first optical system, a second optical system, and a third optical system. The first optical system has an incident surface on which light emitted from the light source to the object side are incident and an emergent surface from which the light passing through the incident surface are emitted. The second optical system has a reflecting surface from which light emitted from the light source to a first side are reflected. The third optical system has a reflecting surface from which light emitted from the light source to a second side opposite to the first side are reflected. The first to third optical systems each illuminate the entire illumination area of the object with light emitted from the light source and incident on the optical systems.

Abstract: A lens includes a first transparent member and a second transparent member. The first transparent member includes a bottom surface, a Fresnel lens surface and a first sidewall. An LED is received in the bottom surface. The Fresnel lens surface is configured for aligning the light from the LED. The first sidewall is configured for refracting the light from the LED. The second transparent member includes a second bottom surface, an upper surface and a second sidewall. A second receiving portion is defined in the second bottom surface for receiving the first transparent member. The upper surface is configured for reflecting the light through the Fresnel lens surface so that the light is redirected to radiate laterally. The laterally radiated light transmits out of the lens through the second sidewall.

Abstract: An illumination system including at least one light source such as an electroluminescent element, e.g. a light emitting diode (LED), and at least one optical element whose surface is structured by diffraction and/or refraction type optical microstructures. In order to shape the beam, the optical element includes at least two sections whose optical microstructures and therefore optical properties are different from one another. The pattern of the microstructures in each of the at least two sections is, at least over a predetermined angular range, rotationally symmetric with respect to the optical axis or another symmetry axis.

Abstract: A lighting unit with a projection lens, a light source, a reflector, a shade, and a convex lens. The projection lens is arranged on an optical axis extending in a longitudinal direction of a vehicle. The light source is arranged on a rear side of a rear side focal point of the projection lens. The reflector reflects forward light from the light source toward the optical axis. An upper end edge of the shade passes through a vicinity of the rear side focal point. The shade shields part of a reflected light from the reflector. The convex lens is arranged between the light source and the shade, and converges light from the light source into the vicinity of the upper end edge of the shade.

Abstract: The present invention is directed to a lens. In one embodiment, the lens includes a first surface, a second surface that bends a light emitted from a light source with the first surface, a third surface that bends the light emitted from the light source with the first surface and a fourth surface coupled to the second surface and the third surface that bends the light emitted from the light source with the first surface. The first surface and the second surface are dioptric. The first surface and the third surface are dioptric. The first surface and the fourth surface are catadioptric.

Abstract: A light-directing lensing member for off-axial preferential-side distribution of light from a light emitter having an emitter axis, including a base end with a perimeter-loop line defining a main plane transverse the emitter axis, and an outer surface configured for refracting light from the emitter in a predominantly off-axis direction toward the preferential side. The outer surface includes a major lens-portion and an axially-located minor lens-portion. The major lens portion outer surface has a front region centered on the front side, a back region centered on the back side, and a middle region around the emitter axis and contiguous with the front and back regions. The minor lens-portion has a surrounding-loop surface extending from the middle region transverse the main plane and terminating at an end surface configured to direct substantially axially-parallel light from the emitter in off-axis direction toward the preferential side.

Abstract: An optical device for distributing light produced by a white LED or other light-producing device includes a lens portion that refracts the light to provide a desired light intensity distribution, and a collimating portion that internally reflects light from the white LED. The optical device may be molded from an acrylic polymer material or the like. The reduced thickness of the device facilitates low cycle times and reduces warpage or other distortion that would otherwise be generated during the molding process.

Abstract: A vehicle-purpose lighting tool is featured by comprising: a light-conducting member having a front light-emitting plane, a rear plane having a concave/convex shape, and a side edge plane; and a light source arranged at a position opposite to the side edge plane; in which within external light which is entered via the front light-emitting plane into the light-conducting member, a portion of the external light which is directly traveled to the side edge plane is totally reflected on a boundary plane of the side edge plane portion; a plurality of reflecting portions are formed on the rear plane and are coupled to each other via a coupling portion in such a direction that the reflecting portions are separated apart from the side edge plane side; and distances between the plurality of reflecting portions and the front light-emitting plane are changed in a discontinuous manner along the separating direction.

Abstract: An optical sheet including a first layer having a concavo-convex pattern which reflects light, and a second layer laminated over the concavo-convex pattern and made of a light-transmissive material, wherein the optical sheet is disposed opposite to a light-emitting surface of a light-emitting element.

Abstract: An illumination unit for emitting light along an optic axis for a projection system includes an LED die and a collimator lens. The collimator lens includes a central part and a peripheral part. The central part has a first light transmission surface and a second light transmission surface opposite to the first light transmission surface. The peripheral part which is around the central part has an inner refraction wall coupled to the first light transmission surface to form a hollow for situating the LED die, an outer reflection wall opposite to the inner refraction wall, and a refraction surface connecting to the second light transmission surface and the outer reflection wall. Both the central part and the peripheral part of the collimator lens are rotationally asymmetrical corresponding to the optic axis.

Abstract: The present invention relates to a side illumination lens and a luminescent device using the same, and provides a body, a total reflection surface with a total reflection slope with respect to a central axis of the body, and a linear and/or curved refractive surface(s) formed to extend from a periphery of the total reflection surface; and a luminescent device including the lens. According to the present invention, a lens with total internal reflection surfaces with different slopes, and a linear and/or curved refractive surface(s) allows light emitted forward from a luminescent chip to be guided to a side of the lens. Further, a linear surface(s) formed in a direction perpendicular or parallel to a central axis of a lens and a curved surface are formed on an edge of the lens so that a process of fabricating the lens is facilitated, thereby reducing a defective rate and fabrication costs of the lens.

Abstract: An LED illumination system comprising an LED light source (3) which emits light (8) in a main direction (9) and a first optical element (1), a second optical element (2) is arranged downstream of the first optical element (1) in the main direction (9), and the second optical element (2) has on a light entrance surface (6) which faces the LED light source (3) a surface structure (4) that comprises a plurality of pillow-shaped prominences (5).

Abstract: The invention concerns a device for projecting a linear optical marking onto at least one boundary of a room, such as floor surface for example, comprising a light source (12) that emits laser radiation along an optical axis (16) as well as a cuboid lens (14) connected in series with the light source, penetrated by the optical axis and reflecting as well as refracting the radiation. To facilitate fanning and reflecting of light originating from the light source through constructively simple means, the invention proposes that provided in the frontal surface (20) is a channel-shaped depression (40) and provided in the rear surface (22) is a projection (24), both of which are geometrically designed and arranged so that the radiation can be totally reflected and that totally reflected radiation striking the depression can be fanned out, where the optical marking runs to both transverse surfaces of the lens.

Abstract: An optical element is disclosed, for receiving relatively narrow light from a planar light-emitting diode (LED) source, and for redistributing the light into a relatively wide range of output angles that span a full 360 degrees. The element may be used to retrofit existing fixtures that were originally designed for incandescent bulbs with LED-based light sources that have similar emission profiles. The element is small enough so that it may be packaged along with an LED module and its control electronics in the volume envelope of an incandescent light bulb. An exemplary element is a single, transparent, rotationally-symmetric lens that has a batwing shape in cross-section, extending angularly away from a longitudinal axis. The lens also includes a variety of curved, straight, specular and optionally diffuse portions on its longitudinal and transverse faces, all of which cause a variety of internal and external reflections, refractions, and optionally scattering.

Abstract: A light-emitting element is disposed to face the front side such that an end point of a rectangular or square light-emitting chip corresponding to the vehicle's own lane is positioned at a rear focal point of a convex lens. An additional lens is disposed to surround the convex lens. The additional lens includes an incident surface, a reflection surface, and an emitting surface. The additional lens is divided into a-plurality of fan-shaped areas in a circumferential direction with respect to an optical axis Ax. The division is performed for each angular range where a corner point of the light-emitting chip, which is positioned at an uppermost end of an image of the light-emitting chip formed on the reflection surface by the light emitted from the light-emitting element, becomes the same corner point.

Abstract: The present invention relates to a side illumination lens and a luminescent device using the same, and provides a body, a total reflection surface with a total reflection slope with respect to a central axis of the body, and a linear and/or curved refractive surface(s) formed to extend from a periphery of the total reflection surface; and a luminescent device including the lens. According to the present invention, a lens with total internal reflection surfaces with different slopes, and a linear and/or curved refractive surface(s) allows light emitted forward from a luminescent chip to be guided to a side of the lens. Further, a linear surface(s) formed in a direction perpendicular or parallel to a central axis of a lens and a curved surface are formed on an edge of the lens so that a process of fabricating the lens is facilitated, thereby reducing a defective rate and fabrication costs of the lens.

Abstract: An apparatus comprises a light source, preferably an LED, a reflector, a light-conducting element mounted on the light source for directing light from the light source to an end of the light-conducting element, and a lens mounted on the end of the light-conducting element for directing light into a central beam. Light from the light source is directed to the reflector into a peripheral beam. The central and peripheral beams comprise substantially all of the light generated by the light source. The lens is in effect mounted on a pedestal above the LED. The pedestal transmits all the light rays in the central solid angle to the lens without loss.

Abstract: A condensing element system and method thereof includes a first section for each of one or more condensing elements and a second section for each of the one or more condensing elements. The first section for each of one or more condensing elements provides substantially total internal reflection of light entering at a base of the first section. Each of the second sections is optically coupled to one of the first sections and has an output surface with one or more peaks and one or more troughs. The first and second sections for each of the condensing elements are each configured so a half-power angle of the light output from the second section is less than the half-power angle of the light entering the first section.

Abstract: A luminaire adapted to being mounted at the top of a post having a design reducing maintenance costs. The luminaire has a capital with a globe mounted thereon forming an optical chamber, the capital has a front access area with a front access door hingedly attached thereto and optionally has a tool-less latch capable of holding the front access door over the front access area. The capital has an opening in a top portion thereof into the optical chamber, optionally, a relamping module extends from the inside of the capital, through the opening and up into a central portion of the optical chamber and has a lamp socket thereon. The relamping module may be removed without manipulation of the globe or globe roof. The luminaire may also have electrical gear within the capital attached to a tray wherein the tray is removably attached to an internal portion of the capital. The globe and globe roof may remain stationary during typical maintenance processes such as relamping or maintenance of electrical gear.

Abstract: A first toroidal ray guide defines an axis of revolution and has a toroidal entrance pupil adapted to image light incident on the entrance pupil at an angle to the axis of revolution between 40 and 140 degrees, and it also has a first imaging surface opposite the entrance pupil. A second toroidal ray guide also defines the same axis of revolution and has a second imaging surface adjacent to the first imaging surface. Various additions and further qualities of the ray guides, which form optical channels, are disclosed. In a method light emanating from a source at between 40-140 degrees from an optical axis is received at an entrance pupil of a ray guide arrangement that is circularly symmetric about the optical axis. Then the received light is redirected through the ray guide arrangement to an exit pupil in an average direction substantially parallel to the optical axis.

Abstract: An optical module for projecting a light beam comprises a solid body of transparent material into which a light source is sunk and which is delimited by an annular surface and by a central surface, and a substantially annular reflecting surface arranged around the solid body. The central and annular surfaces are suitable for receiving respective distinct portions of the luminous flux produced by the source. The reflecting surface may have a reflecting coating or may form part of a transparent body, in which case it works by total internal reflection. The reflecting surface reflects a portion of luminous flux refracted by the annular surface and shapes the flux into a predetermined distribution of luminous intensity about the principal axis. The annular surface is designed in a manner such as to reduce the overall thickness of the module by moving the refracted ray away from the principal axis.

Abstract: A prismatic lens and a reflector/refractor device having enhanced characteristics are provided for lighting fixtures. The prismatic lens and the reflector/refractor device are formed of a silicone material. A prismatic lens member includes a plurality of prisms on a surface thereof for refracting light. The reflector/refractor device includes a plurality of prisms on a surface thereof for reflecting and refracting light. The silicone material forming the prismatic lens and the reflector/refractor device is substantially transparent, and enables forming enhanced optical elements, for example, by injection molding technique. The silicone material is a selected one of dimethylsilicone, phenylmethlysilicone, or similar silicone material enabling enhanced optical performance for the prismatic lens and the reflector/refractor device.

Abstract: A condensing element, array, and methods thereof include a bowl-shaped outer section and a lens-shaped inner section. The outer section provides substantially total internal reflection of light entering at an input surface of the outer section. The inner section is recessed within the outer section at a distance from the entering light that is within the focal position of the inner section. The outer and inner sections are configured in a preferred embodiment so that substantially all the light exiting the condensing element is substantially parallel to the optical axis of the entering light. In an alternate embodiment, the configuration of the condensing element can be modified to selectively adjust the desired degree of collimation of the exiting light.

Abstract: In one embodiment, a method for illuminating a work surface using a solid state lighting fixture includes generating light from a solid state light source, introducing the light into a light guide, reflecting some of the light from a reflector back into the light guide, and introducing light emitted from the light guide into at least one optical element. The emitted light from the at least one optical element has a shifted spatial power distribution to more closely approximate a vertical and horizontal Lambertian spatial power distribution, and the emitted light comprises a total zonal lumens of at least about 90-percent of the total zonal lumens emitted without the at least one optical element. The solid state lighting fixture being operable to emit non-polarized light to generally accurately reproduce colors of objects on the work surface.

Abstract: A luminaire is provided with a one-sided diffuser, located a predefined distance below the light output ports, in order to efficiently distribute light through an upper smooth surface and a lower surface having light altering tracks where each wherein each light altering tracks distributes its received light over a range of angles within a predefined cutoff angle.

Abstract: An artificial light source generator includes at least one luminescent set and a projection plane. The luminescent set includes a light source, a parabolic mirror, a supporting seat, a first lens array, and a second lens array. The light source is disposed at the focus of the parabolic mirror, so that light beams generated by the light source are transmitted in a parallel direction through the parabolic mirror. The supporting seat is for supporting the light source. The first lens array has a plurality of first lens units, and each of the first lens units has a first focal distance. The second lens array has a plurality of second lens units. The distance between the second lens array and the first lens array is 0.5 to 1.5 times the first focal distance. A suitable distance exists between the projection plane and the luminescent set, so that the light beams passing through each of the second lens units cover the entire projection plane. Therefore, the projection plane has excellent illumination uniformity.

Abstract: An exemplary optical lens (300) includes a top surface (301), a base portion (304) opposite to the top surface, and a peripheral side surface defining a first refractive portion (302). The top surface is a generally funnel-shaped top surface. The first refractive portion is corrugated with a plurality of protruding ridge structures, and each of the ridge structures includes a refractive surface (3021). An exemplary light emitting device incorporating the optical lens is also provided.

Abstract: A vehicular lamp includes a projection lens with an optical axis extending in a longitudinal direction of a vehicle and a light source with a light emission portion. The light emission portion is directly incident to the projection lens. The projection lens has a plurality of lens areas with different focal points, with the lens areas centered on the optical axis and disposed on generally concentric circles. The focal points corresponding to the plurality of lens areas have respectively different positions on the optical axis.

Abstract: By a convex lens arranged on an optical axis extending in a front and rear direction of a lamp unit, direct light from a light emitting element arranged rearward of the convex lens is deflected to emit so that the light is made to be parallel light in a vertical face and diffused light toward left and right sides in a horizontal face. An entire region of a left side lens region of the convex lens is constituted as upper deflecting regions for deflecting light to a direction upward with respect to a direction of light of a right side lens region. Light emitted to the front side by transmitting the respective upper deflecting regions is made to be light directed upward from light emitted from the right side lens region to thereby form a laterally elongated light distribution pattern in which an upper end edge of a portion of being disposed on a left side relative to the optical axis is stepped up from an upper end edge of a portion thereof disposed on a right side.

Abstract: An LED lamp includes a lamp holder, a lens, and at least one LED. The lamp holder includes a substrate and a reflector expanding from an outer periphery of the substrate. The lens couples to the reflector of the lamp holder to seal a receiving space of the lamp holder. The at least one LED is received in the receiving space and arranged on the substrate. The lens includes an incident surface facing the receiving space and an opposite emitting surface. At least one micro-structure is formed on the incident surface of the lens corresponding to the at least one LED. The at least one micro-structure is located on a central axis of the at least one LED, for diffusing the light generated by the at least one LED.

Abstract: This invention relates to a brightness enhancement film (BEF) and backlight module in which the brightness enhancement film comprises a plurality of continuous trapezoidal columnar units. The first surface and the second surface of each trapezoidal columnar unit are parallel to each other, and the first surface is provided with a plurality of micro-protrusions or micro-indentations in regular or irregular arrangement such that the brightness enhancement film has good beam-condensing performance by the provision of the trapezoidal columnar unit and the micro-protrusions or the micro-indentations on it, and brightness enhancement film is not damaged in the assembling process. Additionally, when brightness enhancement film is utilized in the backlight module, a backlight module with good light-output efficiency as well as low manufacturing cost can be obtained by only stacking in order of a brightness enhancement film, a planar light source and a reflector.

Abstract: A luminaire and a method of operating a luminaire is provided. The luminaire includes a light source emitting a plurality of light rays. A collimation device is arranged to receive a portion of light from the light source and transmits the portion of light through an exit aperture towards an illuminated area. The exit aperture includes a planar portion and at least one lenslet formed thereon. The lenslet is arranged having a first profile and a second profile, where the portion of light is refracted on a plurality of angles to form a twisted profile by the lenslet.