11 results about "Exit surface" patented technology

An optical lens for lighting fixture includes a body, which comprises a bottom surface and a light-exit surface at opposing bottom and top sides thereof, an elongated groove formed in the bottom surface, a light incident surface, a first intersection line and a second intersection line respectively connected between the two ends of the elongated groove and the bottom surface, a first line segment and a second line segment respectively connected between the light incident surface and the bottom surface, a first virtual line defined between the two ends of the first line segment, a first distance that is the shortest distance between the two ends of the first intersection line, and a SAGi that is the shortest distance between any point at the first line segment and the first virtual line and satisfies the equation: 0≦|SAGi/first distance|×100≦2.8.

A lens array (7) has a plurality of frusto-spherical convex lenses (14, 15), formed in an optical entry surface (8) and an optical exit surface (9), focusing light rays (18, 19) near the center between each lens pair (14a, 15a) in an area (20) where the laser energy is focused sufficiently to induce vaporization resulting in aerosol breakdown which will absorb 99% or more of the laser energy, and thereby protect high gains optical equipment or eyes from optical damage.

A liquid crystal display apparatus is provided which has two or more options in selection of the range of viewing angles. A surface light source device according to the invention has a main surface from which light is emitted, and includes a plurality of light guide plates corresponding to a plurality of regions obtained by dividing the main surface in parallel; an optical film provided on the exit surface side of the light guide plates; and a light driver that controls the turning on and off of the plurality of light guide plates. The optical film includes a light-guide slit film which transmits light that is emitted from the light guide plates and that is within a certain range of angles.

A dual display structure including a light source, a light guide plate, a first display module and a second display module is provided. The light guide plate includes a light incident surface, a first light exiting surface and a second light exiting surface. The first and second display modules are respectively disposed at one side of the first and second exiting surfaces in parallel and back to each other. Light emitted from the light source enters the light guide plate through the light incident surface and emits to the first display module and the second display module through the first light exiting surface and the second light exiting surface.

The invention provides an LED device and a preparation method thereof. The LED device comprises an LED semiconductor chip and a semi-transparent glass body, wherein the semi-transparent glass body is formed by sintering on a light-exiting surface of the LED semiconductor chip; the semi-transparent glass body is formed by coating the light-exiting surface of the LED semiconductor chip with a suspension liquid prepared by mixing nanoscale glass powder and red-yellow primary color fluorescent powder and then naturally drying and sintering the LED semiconductor chip; and the preparation method of the LED device comprises the following steps: mixing the nanoscale glass powder with the red-yellow primary color fluorescent powder to prepare the suspension liquid; coating the LED semiconductor chip with the suspension liquid; and naturally drying and sintering the LED semiconductor chip until a coating layer becomes the transparent glass body. The nanoscale glass powder is prepared by doping titanium dioxide and iron trioxide into a glass formula material, so that a 'rich blue light' emitted from the formed LED device can be effectively blocked and absorbed; the harm of the 'rich blue light' to human eyes is reduced; and the light transmittance is improved.

The invention relates to an automotive trim atmosphere lamp structure which comprises a light guide main body, wherein the light guide main body is light-transmitting and is used for transmitting light from a light source, the surface, directly irradiated by a light source, of the light guide main body is an incident surface, and the emergent direction of the light source is an emergent surface; and a light shielding plate positioned on one side of the emergent surface on the light guide main body, wherein light guide teeth are arranged on the light guide main body; when the light source irradiates the light guide body, light passes through the light guide teeth to form refracted light, and the refracted light irradiates an irradiated surface. The structure has the advantages that the light guide teeth are designed, the shapes of the light guide teeth and the distance between the adjacent light guide teeth are changed, and the light shielding effect of the light shielding plate is matched, so that ray light which is unique in shape and different in brightness is formed, and the effect of heightening the atmosphere in an automobile is better achieved.

An LED lensing arrangement for lighting fixtures includes (1) a rigid light-transmissive outer structure having an outwardly-facing light-exit surface and an outer-structure light-input surface, (2) an optically-clear molded polymeric inner structure having a light-entrance surface and a light-output surface which is adhered to the outer-structure light-input surface, the inner structure being of a material which is pourable upon molding, one example being a liquid silicone rubber (LSR) material, and (3) at least one LED light source secured with respect to and optically coupled to the inner-structure light-entrance surface.

The invention relates to a polarization brightened type photonic crystal optical thin film, which belongs to the technical field of liquid crystal display. The photonic crystal optical thin film comprises a light exit surface, a bottom surface and four side faces, wherein the light exit surface is arranged opposite to the bottom surface; the four side faces are sequentially connected with one another and the upper and the lower ends are respectively connected with the bottom surface and the light exit surface; and the light exit surface is provided with a transmission type two-dimensional photonic crystal unit array. The optical thin film can increase the optical efficiency and integration level of the liquid crystal display, reduce the thickness and cost of a backlight module and realize uniform light exit of the two-dimensional photonic crystal thin film.

The invention discloses a multi-layer total reflection street lamp lens, which comprises a lens body, the lens body comprises a first lens and a second lens, the part, corresponding to the first lens, of the inner wall of a containing cavity is a first incident plane, a first emergent plane is arranged on the outer side of the first lens, the part, corresponding to the second lens, of the inner wall of the containing cavity is a second incident plane, a plurality of fully reflecting surfaces are arranged in the second lens, and emergent surfaces corresponding to the plurality of fully reflecting surfaces are arranged on the outer side of the second lens. The invention further discloses an implementation method of the multi-layer total reflection street lamp lens. According to the multi-layer total reflection street lamp lens provided by the invention, through the arrangement of the first lens, a rectangular light spot with uniformly distributed illuminance can be generated after light rays are emitted to a target road surface through the first lens, so that the uniformity of the light rays on the road surface is improved; and through the arrangement of the second lens, the light rays pass through the second lens and then are superposed on the rectangular light spot emitted by the first lens to form a final light spot, so that the average illumination of the light rays on the road surface is improved.