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100results about How to "Reduce light loss" patented technology

Chip scale LED (light emitting diode) package structure

The invention discloses a chip scale LED package structure. The chip scale LED package structure comprises an LED chip with electrodes on the bottom surface, and a package adhesive body which packs the top surface and the side surfaces of the LED chip. At least one of the bottom and the side surface of the package adhesive body is provided with a reflect surface which is a reflective curved surface or a reflective flat surface extending from the bottom of the package adhesive body to the side surface of the package adhesive body. By arranging the reflective surfaces with high reflectivity on the bottom surface and/or the side surface of the package adhesive body, the chip scale LED package structure can effectively the deficiency that light is emitted out from the bottom or the side surface of the package adhesive body to result in ineffective light extraction, thereby improving the light extraction efficiency of products and reducing light losses; besides, by means of the reflective surfaces on the side surface and the bottom surface of the package adhesive body, the chip scale LED package structure can well control the light emitting angles of the products, facilitating formation of a single light exiting surface and further facilitating using compatibility of the products on different occasions. The chip scale LED package structure can be widely applied to manufacturing chip scale package LED products in the fields such as backlight and lighting.
Owner:SHENZHEN REFOND OPTOELECTRONICS

Side incident LED (Light Emitting Diode) light source backlight module

InactiveCN102182969AReduce light lossImprove light leakagePoint-like light sourceLight fasteningsMirror reflectionEngineering
The invention provides a side incident LED (Light Emitting Diode) backlight module structure which comprises an LED light-bar light source, a middle frame bracket, an optical sheet, a light guide plate, a reflective sheet, heat radiating fins, a back plate, a mirror reflection bar and a light absorption buffer bar, wherein the mirror reflection bar and the light absorption buffer bar are adhered on the middle frame bracket, the mirror reflection bar corresponds to a gap between the surface of the LED light-bar light source and the incident surface of the light guide plate, and the light absorption buffer bar is located between the optical sheet and the middle frame bracket. When the scheme is adopted, light leaked out of the gap between the surface of an LED lamp and the incident surface of the light guide plate can be reflected back to the light guide plate through the mirror reflection bar, so that light loss is effectively reduced; the light absorption buffer bar absorbs remaining light beams, and prevents the remaining light beams from leaking from the gap between the optical sheet and the middle frame bracket, so that the light leakage phenomenon is improved; and meanwhile, the problems of the light loss and light leakage because an LED light emitting surface is equal to or larger than the incident surface of the light guide plate are solved, and the luminance, the energy efficiency and the luminance uniformity of the backlight module are improved.
Owner:KONKA GROUP

Backpack type wireless optical stimulation device and method

ActiveCN102697578AShorten the pathReduce light lossProsthesisLight sourceBrain–computer interface
The invention discloses a backpack type wireless optical stimulation device and a backpack type wireless optical stimulation method. The backpack type wireless optical stimulation device comprises an optical fiber, an optical fiber coupling device, a backpack control circuit, a laser light-emitting diode (LED), an upper computer, a wireless transmission module and a wireless receiving module, wherein the wireless transmission module is matched with the wireless receiving module; the backpack control circuit comprises a microprocessor and a light source drive circuit which are electrically connected with each other; the optical fiber coupling device comprises a shell, an LED connecting piece, an optical fiber coupling lens component and an optical fiber collimator; the upper computer transmits a stimulation command to the backpack control circuit through the wireless transmission module and the wireless receiving module; the backpack control circuit receives the stimulation command and converts electrical signals into a series of optical signals representing optical stimulation characteristics; and the optical signals are transmitted into a light-sensing gene brain region of a target animal through the optical fiber coupling device and the optical fiber, so that the optical stimulation effect on the light-sensing gene brain region is achieved. The invention provides an optical stimulation mode, which is portable, stable, low in power consumption, convenient to use and small in distance limit and has wide application prospect in the field of neural engineering.
Owner:ZHEJIANG UNIV
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