Abstract: Provided is a surface light source device capable of producing directed light. The surface light source device according to the present invention is provided with: LEDs (light source); a case having a light-emitting surface provided with at least one opening (a light-transmitting part), and enabling the light from the LED to be repeatedly reflected and guided within an internal space, and emitted through the aperture part; and a lens sheet (lens member) that is disposed facing the light-emitting surface of the casing and includes at least one lens. The position of the focal point of the lens is substantially the same as the position of the aperture.

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: A light source module includes a light source, an optical lens facing the light source, and a plurality of diffusing particles formed in the optical lens. 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 comprises a first curved facet and a second curved facet surrounding and extending outwardly from 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 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: Embodiments provide a light emitting device package including a body, a light emitting device the body, and a lens disposed on the light emitting device, wherein the lens includes a lower surface portion, an upper surface portion parallel to the lower surface portion, and a lateral surface portion positioned between the lower surface portion and the upper surface portion and provided with a plurality of lateral surfaces, wherein the plurality of lateral surfaces is formed in a shape of a parabola.

Abstract: A light emitting device comprises: a surface light source for a surface-emission; a CPC lens having a light receiving surface, a side reflective surface, and a light emitting surface, the light receiving surface receiving a part of light from the surface light source, the side reflective surface reflecting the light from the light receiving surface, and the light emitting surface facing the light receiving surface and emitting the light; and a reflector containing the surface light source and the CPC lens, and having a concaved reflective surface for reflecting forward the light deviating the light receiving surface from the surface light source, wherein a ratio of a illumination area of the surface light source to an area of the light receiving surface of the CPC lens is not less than 0.63 and not more than 2.93.

Abstract: A light guiding member includes an input surface, an output surface, a counter surface, a reflective portion, and a diffusing portion. The light guiding member is a rod-shaped member that guides light in a longitudinal direction thereof. The input surface is one end face of the light guiding member and allows light to be input thereon. The output surface has a belt-like shape, extends in the longitudinal direction, and allows light to be emitted therefrom. The counter surface is located opposite the output surface. The reflective portion is a belt-like portion extending in the longitudinal direction and reflects light toward the output surface. The diffusing portion is a belt-like portion extending in the longitudinal direction and diffuses light emitted from the output surface. The diffusing portion is smaller than the reflective portion in width in a direction orthogonal to the longitudinal direction.

Abstract: Disclosed is a light emitting device to reduce the number of components and elements of a light emitting device and a lighting device having the light emitting device, and simplify and miniaturize the structures of these devices. With this light flux controlling member (4), a total reflecting surface (12) functions like a reflecting member, light from a light emitting element (LED, for example) (3) that is incident from an input surface (13) and that arrives at the total reflecting surface (12) is total-reflected by the total reflecting surface (12) toward the output surface (11) side (including a first output surface (11a) and second output surface (11b)), and the illuminating light from the second output surface (11b) is superimposed upon the illuminating light from the first output surface (11a), so that the light from the light emitting element (LED, for example) (3) is used efficiently and illuminates the illumination target surface (6) over a wide range.

Abstract: Collimators and methods of making collimators. According to certain embodiments a collimator may be used with a light source, where the light source emits light along a light source axis. The base of the collimator may be angled such that the collimator refracts the light in a direction that is angled relative to the light source axis. There may also be provided methods for making a collimator. According to one method, a mold is first provided that produces an uncut collimator having an extended portion. The uncut collimator may be cut at an angle to produce a collimator with an angled base. In another method, there may be a mold with a base cavity, and a wedge may be inserted in the base cavity. The wedge forms a collimator with an angled base.

Abstract: A light assembly is disclosed which can include one or more light emitting diodes and a reflector. The reflector includes a reflective surface and is positioned to reflect at least a portion of the light emitted by the light emitting diode. The reflector further includes a pair of flanking planar reflective surfaces. The flanking planar reflective surfaces can be positioned at a distance one half the predetermined distance between two light emitting diodes, and can simulate an extended length of the reflector.

Abstract: A light source apparatus includes first and second light direction changing faces that extend in a longitudinal direction, a light guiding member having first and second light emitting faces that are formed to respectively face the first and second light direction changing faces and a light source that is arranged on one end face of the light guiding member. A first vertical plane extending in a longitudinal direction with respect to the first light direction changing face and a second vertical plane extending in a longitudinal direction with respect to the second light direction changing face intersect. A groove which extends in a longitudinal direction of the light guiding member is formed between the first and second light direction changing faces. A surface forming the groove may be parabolic in a cross section.

Abstract: Various optical system embodiments produce a narrow beam of focused or unfocused light using a compound parabolic concentrator, lens system, and high flux density solid-state light source. Various system embodiments include a solid state light source configured to emit light, and a compound parabolic concentrator having a smaller opening and a larger opening opposite the smaller opening, wherein the light source and the concentrator are operationally positioned with respect to each other for light from the light source to enter the smaller opening of the concentrator and exit the larger opening of the concentrator as a narrower beam of light. Some embodiments include an imaging stage operationally positioned with respect to the concentrator to receive the narrower beam of light at an image plane and relay an image plane to a far field target.

Abstract: Sideways emission enhancements are described for light emitting diode (LED) lighting solutions having a wide variety of applications. While a typical LED lighting device has a substantial portion of its light emitted near a normal to the semiconductor photonic chip emitting the light, the present approach may suitable provide a compact, easily manufacturable device with good thermal design characteristics and a changed emission pattern without changing the horizontal mounting plane of the semiconductor photonic chip.

Abstract: A light emitting diode (10) includes an LED chip (14) and an encapsulant (16) enclosing the LED chip. The LED chip has a light emitting surface (141), and the encapsulant has a light output surface (161) over the light emitting surface. The light output surface defines a plurality of annular, concentric grooves (163). Each groove is cooperatively enclosed by a first groove wall (165) and a second groove wall (166). The first groove wall is a portion of a circumferential side surface of a cone, and a conical tip of the cone is located on the light emitting surface of the LED chip.

Abstract: A lighting apparatus (1,2) comprising optical elements (3), electrical elements and an attachment device (4). The optical elements (3) comprise a refractor (10) attachable to the attachment device (4). The refractor (10) comprises two planar members (101, 102) and an arcuate member (103) connecting the planar members (101, 102) to define a cavity (104). Each member having an inner and an outer surface. The optical elements (3) further comprising a light source (11) mountable within the cavity (104) of the refractor by means of a lampholder (11a) positioned in the attachment device (4). The refractor (10) further comprises a plurality of prismatic surfaces (101a, 102a, 103a) wherein at least one prismatic surface is the inner surface (101a, 102a) of at least one planar member and at least one prismatic surface is the outer surface (103a) of the arcuate member.