Abstract: A light source module includes a light source and an optical lens facing the light source. The optical lens includes a light incident face facing the light source, a light emitting face opposite to the light incident face, and a connecting face connecting the light incident face and the light emitting face. The connecting face is planar. The light emitting face includes a lateral face extending upwardly from an outer periphery of the connecting face and a top face located above the light incident face. The top face of the light emitting face includes a center facet facing the light incident face, a first curved facet surrounding and connecting to the center facet, and a second curved facet surrounding and smoothly connecting to the first curved facet.

Abstract: A light source module includes a light source and an optical lens facing the light source. The optical lens includes a light incident face facing the light source, a light emitting face opposite to the light incident face, and a connecting face connecting the light incident face and the light emitting face. The connecting face is planar. The light emitting face includes a lateral face extending upwardly from an outer periphery of the connecting face and a top face located above the light incident face. The optical lens further includes a plurality of protrusions protruding outwardly from the light emitting face, and a plurality of grooves defining in the connecting face. The protrusions are formed on the lateral face and located adjacent to the connecting face, and the grooves are located adjacent to the lateral face.

Abstract: A light emitting diode (LED) bulb includes a connecting body, a mounting base located on the connecting body and a plurality of LED modules mounted on the mounting base. The mounting base has a top face spaced from the connecting body and at least three surrounding walls. The top face of the mounting base orients toward a direction different that of each of the at least three surrounding walls. A lamp cover is secured to the connecting body and encloses the LED modules. An extension of the top face of the mounting base interests with the lamp cover at a point. A tangent line of the lamp cover through the point and the extension of the top face form an included angle which is less than 60 degrees. Furthermore, a center of the lamp cover is located above the top face.

Abstract: A light guide (201) including a transparent element is presented. The transparent element includes an optical diverter section (204) including one or more reflective surfaces (205) forming walls of a notch (206) extending into the diverter section, where the reflective surfaces provide total reflections for directing light into directions lateral with respect to an arrival direction of the light. The transparent element includes an optical channel section (208) for receiving the light from a light source and for directing the light to the optical diverter section. The optical channel section includes a side surface (209) shaped to provide total reflections for directing light to the optical diverter section. The optical channel section makes it possible to place the light source a distance apart from the optical diverter section and also to prevent or at least to reduce direct propagation of light from the light source to the lateral directions.

Abstract: Provided are an optical member having adhesion and elastic restoring force, and a light source device and a display device including the same, the optical member including: a base film; an optical pattern layer provided on the base film and having adhesion; and an upper film partially adhering onto the optical pattern layer, in which at least a partial region of the optical pattern layer has a characteristic in which the partial region is deformed when external force is applied and restored when the external force is removed, and it is easy to assemble a product to improve productivity, and the elastic restoring force is excellent to suppress damage due to the external force.

Abstract: Provided are a light source assembly and a backlight assembly including a lens module. The light source assembly includes: a light source module capable of emitting light and a lens module positioned on the light source module. The lens module includes a light collecting lens collecting the light emitted from the light source module, and a diffusion lens positioned on the light collecting lens, and including an inner curved surface in which light from the light collecting lens is incident and an outer curved surface where the light incident on the inner curved surface exits the diffusion lens, and the light emitted from the light source module forms a light collecting region on the inner curved surface by passing through the light collecting lens.

Abstract: In one embodiment, an optical lens assembly comprising a primary lens and an optical structure located at an outer portion of the lens is disclosed. The primary lens is configured to direct a substantial amount of light to a predetermined first distance whereas the optical structure is configured to direct light towards a second distance that is relatively close to the optical lens assembly compared to the first distance. Other embodiments disclose light-emitting devices and proximity sensors having such an optical lens assembly. Alternative embodiments of the optical lens assembly are disclosed, including but not limited to an optical structure defining an optical surface located at a lens flange and optical structure defining a light guide located at a base portion of the optical lens assembly.

Abstract: The present invention discloses an LED lens and a light source device using the same. The light source device includes the LED lens and a LED. The LED lens comprises a light incident surface, a light emitting surface, and a bottom surface. The light emitting surface includes a recession portion disposed at the central thereof and a convex portion connected to the recession portion. The light incident surface is a concave surface and comprises a first optically active area and a second optically active area. The first optically active area is disposed at the central of the light incident surface; the second optically active area is connected to the first optically active area and the bottom surface. At the junction between the first optically active area and the second optically active area, it is an optical path inversion point that is disposed satisfying specific condition.

Abstract: A light source module includes a light source and an optical lens facing the light source. The optical lens includes a light incident surface facing the light source, and a light emitting face opposite to the light incident face. The light emitted from the light source is entered into the optical lens from the light incident face, and exited from the light emitting face. A refractive index of the optical lens gradually decreases along a direction from the light incident face to the light emitting face of the optical lens.

Abstract: An optical member is provided including a substrate, and a plurality of sub-regions two-dimensionally arranged on the substrate. Each of the sub-regions includes a plurality of unit lenses. The sub-regions and unit lenses are configured to spatially divide an incident light flux into a plurality of light fluxes according to the arrangement of the sub-regions while partially superimposing said divided light fluxes onto one another. Also, each of the sub-regions includes a plurality of the unit lenses arranged in a two-dimensional array, and each of the unit lenses has shape anisotropy.

Abstract: An optical film, a display device including the same, and a method of manufacturing the optical film, the film including a first refractive index layer including a plurality of protrusions; a second refractive index layer covering the plurality of protrusions, the second refractive index layer having a refractive index that is different from a refractive index of the first refractive index layer; and a support layer on the first refractive index layer or the second refractive index layer, wherein a ratio of a height to a width of the protrusion is 0.5 or more.

Abstract: The invention provides a lighting unit comprising a light source and a transmissive optical plate, wherein the light source comprises a light exit surface for light source light, wherein the transmissive optical plate comprises an upstream face directed to the light exit surface of the light source and a downstream face arranged away from the light exit surface) of the light source, wherein the optical plate comprises a 2D array of micro optical elements for refraction of the light source light in a direction away of the downstream face, wherein the geometrical path length from the light exit surface to the transmissive optical plate is at least 20 cm.

Abstract: A light source module includes a light source and an optical lens facing the light source. The optical lens includes a light incident surface facing the light source, and a light emitting face opposite to the light incident face. The light emitted from the light source is entered into the optical lens from the light incident face, and exited from the light emitting face. A refractive index of the optical lens gradually decreases along a direction from the light incident face to the light emitting face of the optical lens.

Abstract: Disclosed are a high efficiency LED package with reduced production costs, a method for manufacturing the same, and a light source unit having the LED package. The method for manufacturing the LED package includes preparing a mold frame on which an LED is mounted, forming a hemi-spherical lens having a reverse-conical top part and a lateral part with haze formed by sanding or bead treatment, and fixing the lens to the mold frame to enclose the LED.

Abstract: Incidence region 162 of light flux controlling member 160 includes first lens region 10 and second lens region 50 which have a fan shape in a plan view thereof. First lens region 10 includes a plurality of first projections 172. In first inclining surface 174 of first projection 172, angle ?11 on a first cross section and angle ?21 on a second cross section in a direction orthogonal to the first cross section are both larger than 0°. In second inclining surface 176, angle ?12 on the second cross section is larger than angle ?22 on the second cross section.

Abstract: A lens plate and an illumination lamp which are not affected by heat from a light source even if the lens plate is small. The lens plate for an illumination lamp has the lens part covering the light source, and the lens part is formed in such a way that a concentric lens pattern is separately formed on an outer central part and an inner peripheral part so as not to be overlapped.

Abstract: An LED light source device includes an LED light source, a first translucent structure covering the LED light source and a second translucent structure covering the first translucent structure. An interior of the first translucent structure has light scattering powder distributed therein. The LED light source is embedded in the first translucent structure. The LED light source is covered by the light scattering powder. The second translucent structure has a radius of R and an index of refraction of N1, while the first translucent structure has a radius of r, wherein R, r and N1 satisfy the following relation: N1<R/(2r?R).

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: An optical lens for adjusting viewing angle of and diffusing light emitted from a light emitting diode includes a light incident surface and a light emitting surface. The light incident surface is cone-shaped and concave towards the light emitting surface. The light emitting surface is cone-shaped and concave towards the light incident surface. A plurality of annular protrusions is formed on the light incident surface. The annular protrusions are coaxial and a center of each of the annular protrusions is located at an optical axis passing through a vertex of the light emitting surface and a vertex of the light incident surface. A lighting device having the optical lens and the light emitting diode is also provided.

Abstract: According to one embodiment, a lighting device includes a base member, a light source on the base member, a light-transmitting cover configured to cover the light source and to emit light emitted from the light source to the outside, and a light guide body provided opposite the light source and configured to guide, to the rear of the light source, at least part of the light from the light source. The cover includes a back light-transmitting region having a plane-normal line directed rearwardly. The light guide body includes a light-incident portion facing the light source and a light guide-emitting portion curvedly extending outward from the light-incident portion, having a distal end portion extending along the back light-transmitting region and directed to the rear.

Abstract: An illumination-type push button device, including a light source portion and an optical member in which one or more lens portions each made of an outgoing surface on a front side and an incident surface on a back side are formed, the optical member configured to receive, from the incident surfaces, light emitted from the light source portion, and to emit the incident light to an outside of the device from the outgoing surfaces, wherein in the outgoing surface of one of the lens portions of the optical member, a single convex portion is formed, the single convex portion being convex in a light exit direction, and in the incident surface of one of the lens portions of the optical member, a plurality of convex portions are formed, the plurality of convex portions being convex reverse to the light incident direction, and smaller than the convex portion of the outgoing surface.

Abstract: An LED lightbulb is configured to properly illuminate a broader region. The LED lightbulb includes a light emitting unit, a pedestal, a power source unit, a heat dissipator, a base, and a globe swelling toward one side in a first direction for enclosing the light emitting unit. The globe is configured to diffusingly transmit light from the light emitting unit. The light emitting unit provides a light amount not less than 50% of the maximum light amount in a region not exceeding ±60° about the central axis extending in the first direction set as 0°. The globe provides a light amount not less than 50% in a region exceeding ±125° about the central axis set as 0°.

Abstract: A floating device that is capable of illumination. In one embodiment, the invention can be a floating illumination device comprising: a housing having a sealed interior cavity and a substantially vertical axis; a power source located within the sealed interior cavity, the power source comprising a first battery and a second battery separated by a gap; and a light source located within the sealed interior cavity and operably coupled to the power source, the light source located within the gap between the first battery and the second battery.

Abstract: An LED lamp or bulb is disclosed that comprises a light source, a heat sink structure and an optical cavity. The optical cavity comprises a phosphor carrier having a conversions material and arranged over an opening to the cavity. The phosphor carrier comprises a thermally conductive transparent material and is thermally coupled to the heat sink structure. An LED based light source is mounted in the optical cavity remote to the phosphor carrier with light from the light source passing through the phosphor carrier. A diffuser dome is included that is mounted over the optical cavity, with light from the optical cavity passing through the diffuser dome. The properties of the diffuser, such as geometry, scattering properties of the scattering layer, surface roughness or smoothness, and spatial distribution of the scattering layer properties may be used to control various lamp properties such as color uniformity and light intensity distribution as a function of viewing angle.

Abstract: According to one embodiment, in a constricted part of a globe, one end is set to a minimum diameter, the other end is set to a maximum diameter, and a diameter thereof increases from the one end side to the other end side. The constricted part of the globe is concaved into the inside of an imaginary straight line connecting an outer edge of the one end and an outer edge of the other end when viewed in section. A light source part includes a semiconductor light-emitting element and is contained in the globe so that a light-emitting part is positioned between both the ends of the constricted part of the globe. A cap is positioned on one end side of the globe.

Abstract: Disclosed is a lighting device including a body provided with a cavity in an upper part, a power supply disposed in the body to supply power, a case disposed in the cavity, the case including an electrode unit detachably connected to the power supply, and a light source disposed in the case and electrically connected to the electrode unit. Disclosed is also a lighting device including a body provided with a cavity in an upper part, a power supply disposed in the body to supply power, a case disposed in the cavity, the case including an electrode unit detachably connected to the power supply and a case body connected to the electrode unit, and a light source disposed in the case body and electrically connected to the electrode unit to emit light.

Abstract: An optical element is provided. When in a xz cross section, an angle which a ray travelling from the origin at ?r forms with the normal to the light receiving surface is designated as ?x, an angle which a ray travelling from b in the z axis direction forms, after the surface, with the z axis direction is designated as ?ib, in a yz cross section, an angle which a ray travelling from the origin at ?r forms with the normal to the light receiving surface is designated as ?y, angles which a ray travelling from a in the z axis direction forms, after the light receiving and exiting surfaces, with the z axis direction are designated as ?ia and ?ea, and an angle which a ray travelling from the origin at arc tan(a/ha) forms, after the light exiting surface, with the z axis direction is designated as ?eha, ?y>?x (0<?r<60°) ?eha>45° ?ea>45° ?ia>?ib are satisfied.

Abstract: A lighting system (10, 50, 70, 90) is provided comprising at least one light source (21, 91) and at least a first optical element (22, 92). The light source (21, 91) generates a light beam (12) and the first optical element (22, 92) refracts the light beam (12). The light source (21, 91) and the first optical element (22, 92) are arranged such that the light source (21, 91) and/or the first optical element (22, 92) are movable under the influence of a gravitational field in such a way that a distance between the light source (21, 91) and the first optical element (22, 92) is dependent on an orientation of the lighting system (10, 50, 70, 90) with respect to the gravitational field.

Abstract: A lens member includes a central axis, a light-incident side including a Fresnel-lens surface provided with a plurality of annular prisms concentrically arranged with respect to the central axis, and a light-exit surface opposite to the light-incident side. The Fresnel-lens surface further includes an annular lens portion that is concentrically arranged with respect to the central axis and that is extended to be longer and wider than the plurality of annular prisms. Provided is an optical unit in which a light source and a lens member are combined, and parts are disposed in a space provided in an outer periphery of the annular lens portion.

Abstract: A lens cap (3) is arranged to cover a light-emitting surface (23) of a light source (2), the lens thereby guiding light from the light source (2) in oblique directions relative to the light source (2). The lens cap (3) includes, in a planar view, a light transmitting region (33) and a light blocking region (34), the light transmitting region (33) divided into a plurality of light transmitting regions by the light blocking region (34) so that the light from the light source (2) passes through the plurality of light transmitting regions (33) and is separated into beams traveling in different directions.

Abstract: The present invention relates to a non-imaging optical lens and a light-emitting module having the same. The lens includes a concave region having a continuous curved optical surface formed by a plurality of facets spliced together. The continuous curved optical surface faces the light-emitting device. The curved surface consists of an array in at least three rows of the facets and at least three columns of the facets.

Abstract: The present invention relates to a semi-sphere lighting set with carving pattern by laser primarily includes a body, which is provided with a circuit disposed inside and a plug disposed at one side for connecting an electricity supply so as to introduce electrical power, an illuminating element, which is disposed at upper side of the body and electrically connected with the circuit of the body, a bottom, which is in transparent form, provided with an orifice and integrated at upper side of the body, and a shell, which is made of transparent plastic material in a hollow semi-sphere form with an opening at one end and a wall having a carving pattern and disposed at outer circumference of the illuminating element as integrated with the bottom. Thus the light generated by the illuminating element is utilized to penetrate the shell so as to produce the enriched and layering visual sensation by the carving pattern of the shell.

Abstract: Gradient optics for controllable light distribution for LED light sources. In an aspect, an apparatus is provided that includes a panel coupled to receive light emitted from a light source and gradient optics disposed on the panel. The gradient optics providing a transparency gradient that filters the light to achieve a selected emitted light intensity variation across a selected surface of the panel.

Abstract: A surface light source device includes an organic electroluminescent element including a luminescent layer and a light-emitting surface structure layer disposed on one of the surfaces of the organic electroluminescent element. In the surface light source device, the light-emitting surface structure layer includes a concave-convex structure provided on a surface thereof on the side toward a device light-emitting surface, and the concave-convex structure includes a plurality of concave portions having oblique surfaces and flat portions disposed around the concave portions. The flat portions and/or the concave portions have a size difference in one or more of their width, height, depth, and spacing, the size difference being larger than the difference that causes interference of one or both of emitted light and reflected light.

Abstract: A luminaire includes an LED based illumination device with a light emitting area and an optical element that is configured to produce a hybrid emission pattern with a spot beam emitted within a predetermined far field angle and a background level spherical emission pattern. The optical element, for example, may be configured with an input port and an output port, and a perimeter that increases in size from the input port to a maximum perimeter and decreases from the maximum perimeter to the output port. The optical element receives an amount of light from the LED based illumination device at the input port, emits a first portion of the light from a curved, semitransparent sidewall, and emits a second portion of the light at the output port, wherein the emission area of the output port is less than a maximum perimeter of the optical element.

Abstract: A light guiding structure includes a light transmissive body and microstructures; the light transmissive body includes an upper conical groove and a lower accommodating groove, and the upper conical groove has a curved surface with a continually varied slope; the microstructures are disposed on the light transmissive body. A lighting device includes a circuit board, a light source and the aforesaid light guiding structure; the light source and the light guiding structure are disposed on the circuit board, and the light source is accommodated within the lower accommodating groove.

Abstract: An illumination structure including an illumination module, a light base and a cover is provided. The light base includes a cylindrical shell and an electrical connector, wherein the cylindrical shell is used for receiving and supporting the illumination module. A first end of the cylindrical shell has a first edge including a plurality of protrusions. A second end of the cylindrical shell is connected to the electrical connector. The cover has a second edge including a plurality of recessions. Each recession is complementary in shape to a corresponding protrusion, so that the protrusions are received in corresponding recessions respectively.

Abstract: A light emitting module is provided with a light emitting element and an optical wavelength converting member. The optical wavelength converting member includes a light incident plane, a light output plane, and an outer plane which is a plane except for said light incident plane and said light output plane. The optical wavelength converting member converts a wavelength of light emitted on the light emitting element and entered from the light incident plane into the optical wavelength converting member and outputs the wavelength-converted light from the light output plane. An average roughness “Ra” of at least a portion of the outer plane is lower than an average roughness of the light output plane.

Abstract: A light emitting device includes: a substrate; a semiconductor light emitting element provided on the substrate; a sealing member which covers the semiconductor light emitting element; and a lens having a plurality of convex parts and a concave part. The light emitting device emits light having a non-concentric luminance distribution made up of a plurality of bright regions and a plurality of dark regions, the non-concentric luminance distribution being observed on a plane which is parallel to the substrate. This makes it possible to provide (i) a display device which has a thin body and hardly causes unevenness in luminance and in chromaticity, and (ii) a light emitting device and (iii) a surface illuminant suitable, which are suitable for use in the display device.

Abstract: A lens member includes a light-incident side; a light-exit side that is opposite to the light-incident side, a Fresnel lens arranged on a center axis that passes through a center of the light-incident side, and a diffraction grating structure arranged around a periphery of the Fresnel lens and having a center through which the center axis passes. Also, it is disclosed that the Fresnel lens may include a first Fresnel lens and a second Fresnel lens, the first Fresnel lens includes annular prisms that are divided from a convex lens and having a center through which the center axis of the light-incident side passes, and the second Fresnel lens includes annular prisms that are divided from a TIR lens and arranged around the periphery of the first Fresnel lens, centering around the center axis of the light-incident side.

Abstract: The present invention relates to a light-guiding cover and an illumination device having the same. The light-guiding cover, for guiding light beams emitted by at least one light-emitting diode (LED), has a light-guiding portion and a light output portion. The light-guiding portion has a light input surface for transmitting light beams thereto and a connecting surface. The light output portion formed on one end of the light-guiding portion has an optical surface adjoining the connecting surface. The light-guiding cover is substantially symmetrical and defines a central axis. The light beams received by the light-guiding portion are guided by the light input surface for light reflection from one side to another side of the optical surface across the central axis to exit from the light-output portion. Thus, the illumination device having the light-guiding cover can illuminate in an omni-directional manner.

Abstract: An illumination apparatus including a lamp housing, a light source and a glare restraining unit is provided. The lamp housing has a light exit opening. The light source is disposed according to the light exit opening. The glare restraining unit includes a substrate and a plurality of cone microstructures disposed on the substrate. After passing the glare restraining unit, the light converges.

Abstract: Lighting fixture (10) with controlled photometric light emission, comprising a LED light source (21), whose operation is ensured by an electronic printed circuit board (20) which is properly sized and designed, and a housing (30) for containing the LED light source (21) and the electronic printed circuit board (20), able to obtain a heat dissipation; in particular, different type of lenses (25, 26, 27) having different surface geometry can be placed over the LED light source (21), said lenses (25, 26, 27) being able to direct the light beam emitted from the LED light source (21), in order to obtain uniform illumination on surfaces having variable geometry.

Abstract: A lamp unit which implements a source light source with a small number of light sources using a lens and a vehicle lamp apparatus including the same. The lamp unit includes an optical member, a base plate spaced from the optical member by a predetermined distance, and a spacer between the base plate and the optical member. The spacer supports an edge of the optical member, and a light source is disposed on the base plate. A lens is coupled to the base plate, and the lens covers the light source. The lens includes a connection portion contacting the base plate, and a reinforcement part contacting the spacer.

Abstract: A lens receives light emitted from an illumination source along an orientation in which a center of the lens is aligned with a central axis of illumination that forms an acute angle of incidence relative to a to-be-imaged surface and the lens directs the light toward the to-be-imaged surface.

Abstract: This disclosure contemplates embodiments of a diffuser element for use with lighting devices that utilize directional light sources, e.g., light-emitting diode (LED) devices. The embodiments utilize a shell wall that forms a volume diffuser with a non-uniform material thickness. The variations in the thickness afford the diffuser with optical characteristics that can improve the distribution of light. In one example, lighting devices that deploy the diffuser element and LED devices distribute light with an optical intensity distribution similar to an incandescent bulb.

Abstract: Light-emitting devices that include a scattering element of arbitrary shape and processes for fabrication thereof are described. In one aspect a method for forming a light-emitting device includes providing a light-emitting element (LEE) on a base surface of a base substrate; coupling a first optical element with the base surface of the base substrate, where the first optical element has a first surface facing the LEE and a second surface opposing the first surface; disposing the first optical element in a curable or settable fluid so that the fluid conforms to the second surface; and curing or setting the fluid to form a second optical element including a molded transparent layer adjacent the second surface of the first optical element.

Abstract: An adapter lens includes an inner converging lens part; a convex light output region; a front conical light output region; an outer reflector part; a rearwardly open blind hole defining surface including a flat base surface and a frustoconical side surface that together define a light incidence region and a frustoconical hole having an inner end diameter, an outer end diameter, and allowing for longitudinal movement therein of a LED light source along an optical axis of the adapter lens within the frustoconical hole for changing a light cone emitted from the adapter lens. The adapter lens has a height H and a maximum diameter MD, and the ratio of the height H to the maximum diameter MD is greater than 0.5.

Abstract: A showcase comprising an illumination apparatus which includes a shade member constituted of a light-transmitting front wall positioned on the side of the light emitting surfaces of LED elements, and a back wall positioned on the side of a substrate provided with the LED elements, the front wall comprising a curved portion having an arc-like section and a pair of flat portions extended continuously from both ends of the curved portion to intersect with the back wall at an acute angle, corner portions where the flat portions intersect with the back wall being a pair of engaging portions; and a holder provided with a plurality of engagement portions and the like with which the engaging portions are disengageably engaged.

Abstract: A light source module is disclosed and includes a carrier, a light-emitting unit, and a lens. The light-emitting unit is disposed on the carrier and has a light-emitting surface. The lens is disposed above the light-emitting unit and has bottom surface and a tapered top surface opposite to the bottom surface. The bottom surface is opposite right to the light-emitting surface. A gap exists between the bottom surface and the light-emitting surface. Therefore, beams emitted by the light-emitting unit are modulated by the lens to be mostly concentrated relatively in a specific radiation angle range and distributed more uniform within the specific radiation angle range, which is conducive to reduction of the glare degree of the light source module.