50results about How to "Good light uniformity" patented technology

A lighting device for a vehicle lamp has a base, a substrate, a conducting rib and an LED module. The substrate is mounted in the base. The conducting rib is perpendicularly mounted on the base and has a first heat-dissipating surface and a second heat-dissipating surface opposite to the first heat-dissipating surface. The conducting rib provides two heat dissipating paths to increase the heat dissipating efficiency. The LED module is mounted on a distal end of the conducting rib and extends out of the base, and the LED module is electrically connected to the substrate. The LED module extends out of the base to accurately correspond to a reflection space around a lamp seat and improve the light-homogenizing effect of the vehicle lamp.

A light guiding apparatus including a first light guide and a second light guide is provided. The first light guide includes a first end surface thereon, a second end surface and a side surface thereon, wherein the first end surface includes a first light incident surface, the second end surface includes a first light emitting surface, and the side surface is located between the first end surface and the second end surface of the first light guide. The second light guide has a second light incident surface and a second light emitting surface connecting to the second light incident surface, wherein at least a portion of region of the second light emitting surface is a roughened surface. The second light incident surface or the first light emitting surface is a roughened surface, and a medium is between the second light incident surface and the first light emitting surface, wherein the medium has a refractive index smaller than that of the first light guide and the second light guide.

A method for preparing lightguide plate includes providing a mould baseboard, utilizing laser beam to etch designed lattice point pattern for light guide plate on the mould baseboard to form light guide plate mould, forming shaped lightguide plate by ejection with the mould to have present lattice point pattern prepared on the lightguide plate.

The invention discloses a light guide device and a network camera using the same. The light guide device includes a light guide substrate, a light source bearing part, a first through hole and two first blind holes. The light source carrying part is used to carry the light source and guide the light emitted by the light source into the light guide substrate; the first through hole is arranged on the light guide substrate adjacent to the light source carrying part, and the first through hole is used for other components to pass through. The connecting line between the light source bearing seats is the first connecting line, the two first blind holes are symmetrically arranged on both sides of the first connecting line, and the first through hole is located between the two first blind holes and the light source bearing seat, the two first blind holes The first blind holes correspond to the first area on the light guide substrate, and the light is deflected when passing through the two first blind holes, so as to reduce the brightness of the first area. The present invention reduces the luminance of areas with higher luminance and increases the luminance of areas with lower luminance by setting blind holes of different shapes and functions, thereby reducing the luminance difference between various areas and improving the light uniformity of the light guide device.

The invention belongs to the technical field of illumination and provides an optical structural plate. The optical structural plate comprises a tabulate transparent body and a plurality of convex condensation units which are evenly arrayed on at least one surface of the body. The surface of each convex condensation unit is of a mirror structure. The body and the convex condensation units are integrally formed. The multiple convex condensation units are arrayed in a plurality of lines. The convex condensation units in every two adjacent lines are distributed in a staggered mode, so that the convex condensation units are integrally in a honeycomb shape. According to the optical structural plate, the multiple convex condensation units are formed on the surface of the body and are integrally in the honeycomb shape, so that large-angle light which enters the convex condensation units and deviates from the center axes of the convex condensation units is emitted out at a small angle after being refracted and totally reflected by the surfaces of the convex condensation units, glare caused by leakage of the large-angle light is prevented, and light pollution is avoided; moreover, the closely-distributed convex condensation units also have a light homogenizing effect; in addition, the optical structural plate is not doped with diffusion particles, so that the light transmittance is remarkably improved; and meanwhile the light receiving effect and light homogenizing effect of the optical structural plate are improved.

The invention relates to a light-emitting device, a backlight module and an LCD. The backlight module comprises a framework and a light source, wherein the light source is arranged in the framework. The light source comprises a substrate and a plurality of light-emitting devices, wherein each light-emitting device contains at least one light-emitting chip, a plurality of scattering particles and a sealing wax; and the light-emitting chip, scattering particles and sealing wax are all arranged on the substrate, wherein the scattering particles are next to the light-emitting chip and the light-emitting chip and partial scattering particles are covered with the sealing wax.

The invention provides a backlight module comprising a light box and at least one light tube, wherein the light box is provided with a reflecting structure capable of defining that the light box has a first area and a second area with different reflecting rates; the light tube is configured in the light box and has a high-voltage electrode end and a low-voltage electrode end; the second area corresponds to the high-voltage electrode end; the first area corresponds to the low-voltage electrode end and the reflecting rate of the first area is higher than that of the second area. The backlight module has good light emitting equality.