4results about How to "Low light efficiency" patented technology

The invention provides a light emitting diode for improving etching damage and a preparation method thereof, and belongs to the technical field of photoelectron manufacturing. The preparation method comprises the following steps: forming an epitaxial layer; and irradiating the local area of the epitaxial layer by using laser to decompose the local area of the epitaxial layer and form a groove. According to the embodiment of the invention, the damage to the side wall of the epitaxial layer can be improved in the process of forming the groove in the epitaxial layer, and the light-emitting effect of the light-emitting diode is ensured.

The utility model relates to gem processing detection technical field more specifically, relate to a gem cutting and grinding process three -dimensional dynamic optical detection module, including mounting bracket, the mounting bracket includes upper roof, left side board, lower bottom plate and right side board, the upper roof, left side board, lower bottom plate and right side board combine and form the rectangular structure, wherein the middle part of upper roof is provided with fixed hole, the middle part of lower bottom plate is open, the right side and left side of lower bottom plate are provided with first off -axis parabolic mirror and second off -axis parabolic mirror respectively, the upside of first off -axis parabolic mirror and second off -axis parabolic mirror is provided with semiconductor laser and acquisition camera respectively. First off -axis parabolic mirror focuses laser to gem surface, second off -axis parabolic mirror captures the laser signal of gem surface reflection, and reflects it to acquisition camera, realizes the dynamic focusing of curved surface gem detection without aberration, and this detection mode adopts non -contact detection, avoids the damage of gem surface.

The invention discloses a white light COB light source and a preparation method, and relates to the technical field of LED illumination, and the preparation method specifically comprises the following steps: fixing a blue light flip chip above a PCB through solder paste, fixing a fluorescent diaphragm above the chip, dripping a layer of glue above the chip and the fluorescent diaphragm, and curing to obtain the white light COB light source. The fluorescent membrane can be a single-layer fluorescent membrane or a double-layer fluorescent membrane, is suitable for different fields, has good optical performance, can replace a QD membrane, and reduces the cost.

The present invention discloses an anti-glare LED lamp, comprising a housing, a reflector, an LED lamp tube, an anti-glare component, an adjustment component and a circuit board. A plurality of reflectors are respectively installed in recesses located at one side of the housing and the openings face the mouths of the recesses. A plurality of LED lamp tubes are respectively installed in each reflector. The anti-glare component comprises a rotating shaft, a light guide plate, a gear and a toothed belt. A plurality of rotating shafts are sequentially passed through each reflector and are rotatably connected to the mouths of each reflector near the openings through bearings. One ends of a plurality of light guide plates are respectively extended into the openings of the reflectors and are fixed to the outer walls of the rotating shafts. A plurality of gears are respectively installed outside each rotating shaft. The toothed belt is simultaneously meshed with a plurality of corresponding gears located outside each rotating shaft. One end of one of the rotating shafts passes through the housing and the rotation angle is adjusted by the adjustment component, so that the emission angle of light can be changed to prevent the occurrence of glare.