Abstract: A planar light source device is provided which has high light extraction efficiency and in which a change in color tone at different viewing angles is small. The planar light source device includes, on a light emitting surface, a concavo-convex structure layer made of a resin composition. In this planar light source device, the concavo-convex structure layer has a cone, pyramid, or prism shape, and the resin composition contains a transparent resin and particles. In particular, in the planar light source device, variations in any of x- and y-chromaticity coordinates in any directions in a hemisphere on the light emitting surface are within ±0.1, the diameter of the particle is 10 ?m or less, and the amount of the particles is 1 to 40 wt % based on the total amount of the resin composition. In addition, the difference in refractive index between the particles and the transparent resin is 0.05 to 0.5.

Abstract: A vehicle lamp including a projector headlight using an LED light source for a low beam can include a shade, an LED light source, an ellipsoidal reflector and a projector lens. Both a focus of the projector lens and a top edge of the shade can be located near a second focus of the reflector. The LED light source can be located near a first focus located below the second focus of the reflector. Therefore, light emitted from the LED light source can be effectively gathered near the focus of the projector lens via the reflector and can be projected via the projector lens with high light use-efficiency. The projector lens can include light dispersing portions or structures on an upside and downside thereof for reducing chromatic aberration. Thus, the lamp can project a favorable light distribution that can conform to light distribution standards for vehicle headlights and the like.

Abstract: The display device is provided with: a display panel that displays an image; a circuit board 20 that is disposed on a back surface of the display panel; a plurality of LED chips 21 that are disposed in an array on the circuit board 20 and that emit light to the display panel; and a lens 30 of a hemispherical shape that is disposed on the circuit board 20 and that covers each of the plurality of LED chips 21. A following relationship is established: R1/0.281?L1, where L1 denotes an array pitch of LED chips 21 constituting the plurality of LED chips 21, and R1 denotes a radius of the lens 30. Accordingly, a light-emitting device achieving a high degree of light utilization efficiency and an excellent degree of color mixing, and a display device using the light-emitting device are provided.

Abstract: The present invention relates to an optical illumination module that includes a fixed light source and a plano-convex lens. The fixed light source is a light emitting diode. The plano-convex lens is an aspheric lens with rotational symmetry, and disposed to a specific distance of an optical axis of the fixed light source. The specific distance is greater than or equal to 13.5 millimeter, and is smaller than or equal to 17.5 millimeter. The plane of the plano-convex lens is a light-beam incident plane, and a convex end is a light-beam exit plane. When the fixed light source is disposed at a coordinate origin, the convex curve of the plano-convex lens is composed of a series of points having specific coordinates. When the plano-convex lens shifts within the specific distance, a parallel light beam form the fixed light source can be refracted to achieve an effect of enhancing the uniformity of luminous brightness.

Abstract: A light guiding diffuser used for assembling with a light emitting diode module to form an illuminating light source. The light guiding diffuser includes an elliptical ring-shaped base portion and a convex portion extended from a surface of the base portion and formed a space with the base portion for accommodating the light emitting diode module. The convex portion has a cross section which has a minimum thickness in a center thereof and the thickness of the cross section continuous increases from the center toward the base portion.

Abstract: Provided are a lens and a light emitting apparatus comprising the lens. The light emitting apparatus comprises a substrate, a light emitting device package on the substrate, and a lens supported by the substrate, the lens being disposed on the light emitting device package. The lens comprises a lens body comprising a first recessed part at a central portion of a top surface thereof and a second recessed part at a central portion of a bottom surface thereof and a lens support disposed on the bottom surface of the lens body to support the lens body such that the bottom surface of the lens body is spaced from the substrate.

Abstract: Optical device and optical component part for the targeted reproduction of light emitted by LED light sources (6). The optical device comprises at least two component parts, a first optical component part (10) in the form of a solid waveguide and another component part for connection to the LED light source (6). In a system of Cartesian co-ordinates, the first optical component part (10) has a length in the y direction shorter than or equal to its length in the z direction and shorter than or equal to its length in the x direction. An envelope of the first optical component part (10) projected in an x-y plane forms essentially a rectangle. Proceeding from an x-y plane, the optical component part (10, 10?) tapers in the z direction to maximum ¼ of the largest width measured along y (By, max), with any design of the y-z flanks of the optical component part (10, 10?).

Abstract: A light source for use in a device, for example in a dental device, comprising a semiconductor element disposed in a housing wherein the semiconductor element comprises a light-emitting surface. The light source further comprises a socket that extends from a side of the semiconductor element opposite the light-emitting surface, the socket being provided for being placed in a frame located in the device, wherein the socket comprises contact elements and lines for power supply to the semiconductor element. The light source is particularly robust and long-lasting.

Abstract: A lighting device, a light spreading plate for the lighting device and a method for manufacturing the same are provided. The lighting device comprises a light source plate and the light spreading plate. The light source plate comprises a plurality of light sources. The light spreading plate comprises a light travelling layer formed with a plurality of light spreading units. Each of the light spreading units is formed with a main body being defined with a top surface, a bottom surface and a peripheral. The main body has a thickness being tapered towards the peripheral. The main body comprises a top surface having a cone-shaped recess and a bottom surface having a bowl-shaped recess. The cone-shaped recess and the bowl-shaped recess of each of the spreading units are opposite to each other, and one of the cone-shaped recess and bowl-shaped recess is fitted for one of the light sources.

Abstract: An LED module comprises an LED having an optical axis and a lens for refracting light from the LED. The lens is symmetric relative to a first plane at which the optical axis is located. The peak light intensity in the first plane occurs within 0-5 degrees off the optical axis. The light intensity in the first plane decreases from the peak light intensity with the increase of the angle off the optical axis. In a second plane perpendicularly intersected with the first plane at the optical axis, the peak light intensity occurs within 33-41 degrees off the optical axis, and the light intensity at the optical axis is larger than a half-peak light intensity. Within 0-33 degrees off the optical axis, the light intensity in the second plane increases with the increase of the angle off the optical axis.

Abstract: An LED lighting device is provided, which does not create dazzling effects, has no difference in brightness in accordance with viewing angles, and has superior interior effects. The LED lighting device includes an LED irradiating light onto an outside, a first lens having a lower part in which the LED is provided and having a convex form to diffuse the light incident from the LED through the lower part thereof to the outside, and a second lens provided on the outside of the first lens and having a rough surface formed on its inner surface to diffusedly reflect the light diffused through the first lens.

Abstract: An optical member 15 includes a planar light transmissive sheet 22 and a number of convex microlenses 23 provided in random settings within a surface of the light transmissive sheet 22. By providing a number of the convex microlenses 23 within the surface of the light transmissive sheet 22, moire patterns are less likely to be created even when the optical member 15 is overlaid on a liquid crystal panel 11 having pixels PE that are regularly arranged.

Abstract: A high visibility emergency signaling device includes a base configured to be secured to an external support raised above ground level, light-emitting means mounted thereto for generating at least one light beam, and power supply means for such light-emitting means. Optical means are further provided, operating on the at least one light beam to model and orient it in such a manner as to illuminate a substantially circular area in space and/or on the ground.

Abstract: An optical lens includes an array of lens units. Each lens unit includes a main body, a light diverging portion and a light converging portion. The main body includes a light incident surface and a light emitting surface opposite to the light incident surface. The light diverging portion is configured for expanding a light field along a first direction, and the light converging portion is configured for compressing a light field along a second direction. The light diverging portion and the light converging portion are both formed on one of the light incident surface and the light emitting surface.

Abstract: One embodiment of a method for configuring consumption of service includes identifying a service to be consumed by a user, identifying a plurality of bearer technologies across which at least one electronic device can access the service, selecting one of the plurality of bearer technologies for use in configuring the at least one electronic device, and configuring the at least one electronic device for the service using one of a plurality of management frameworks according to the selected bearer technology.

Abstract: An illumination lamp (40) includes at least one solid-state lighting member (41) for radiating light, and a lampshade (10) being arranged corresponding to the at least one solid-state lighting member. The lampshade includes an array of lenses (11). Each lens has an incidence surface (110) for incidence of the light into the lampshade, and an opposite emitting surface (112) for emission of the light from the lampshade into ambient. At least one of the incidence surface and the emitting surface is a concave surface. The concave surface extends along a first direction. At least one micro-structure (111) is formed on the concave surface. The at least one micro-structure is long and narrow, and extends along the first direction. The micro-structure is configured for increasing radiating area of the light entering into the lampshade along a second direction intersecting the first direction.

Abstract: An LED unit includes a reflector, an LED mounted in the reflector, and a lens detachably mounted within the reflector and covering the LED. The reflector includes a bottom plate in which the LED is received, an annular sidewall and a tapered sidewall interconnecting the annular sidewall and the bottom plate. The lens includes a disk and dome protruding upwardly from the disk. The reflector forms a pair of buckles at two opposite sides thereof to abut against the disk, thereby fixing the lens therein. A bottom face of the disk confronting the LED and a top face of the dome remote from the LED are all aspheric surfaces.

Abstract: A light emitting illuminant improves a cover of a conventional light emitting device by designing the internal surface of the cover with an irregular serrated surface, such that after a strong light source of the light emitting device is projected onto the internal surface of the cover, the wavelength and the reflecting/refraction direction of the light source are changed to achieve a mixed light effect and overcome an eyesore effect of the strong light source. The external surface of the cover is designed in an arc shape and with a thickness different from that of the internal surface to constitute a lens mode, such that after the lights of the light source are mixed through the internal surface, the lens with the property of focusing/scattering lights can change the wavelength to amplify and mix the lights, so as to provide a high brightness for the light source.

Abstract: The present invention relates to an optical illumination module that includes a fixed light source and a plano-convex lens. The fixed light source is a light emitting diode. The plano-convex lens is an aspheric lens with rotational symmetry, and disposed to a specific distance of an optical axis of the fixed light source. The specific distance is greater than or equal to 13.5 millimeter, and is smaller than or equal to 17.5 millimeter. The plane of the plano-convex lens is a light-beam incident plane, and a convex end is a light-beam exit plane. When the fixed light source is disposed at a coordinate origin, the convex curve of the plano-convex lens is composed of a series of points having specific coordinates. When the plano-convex lens shifts within the specific distance, a parallel light beam form the fixed light source can be refracted to achieve an effect of enhancing the uniformity of luminous brightness.

Abstract: A lighting device can have a simple configuration which can be formed compactly in the direction of its optical axis in particular, and with a light weight. The lighting device can also have a functional, three-dimensional innovative appearance for the sake of enhanced merchantability and novelty. The lighting device can include a light source and a projection lens which is situated so that its source-side focus lies near the light source and its optical axis generally coincides with that of the light source. The projection lens can be a distribution control lens of convex form, having an exit surface shaped aspherically so that the direction of emission is continuously refracted into specified directions with respect to the angle of incidence from the focal position.