33results about How to "No shadows" patented technology

The invention relates to a multi-surface reflector for an LED street lamp, which comprises a conical curved surface and two continuous parabolic curved surfaces in mirror symmetry. The conical curved surface and the two parabolic curved surfaces are integrally connected through a connecting part to form a closed multi-surface reflector ring which is fixedly arranged on a base of an LED chip and used for reflection of light. The multi-surface reflector for the LED street lamp enables luminous angles of the LED street lamp to shift and reasonably distributed in an effective area of a pavement so as to form a light band with even brightness; adjacent light spots do not form a shadow so as to accord with the lighting design requirement of traffic routes; and no matter in irradiation distance or evenness, the LED street lamp has larger promotion than the conventional street lamp.

The invention relates to the technical field of liquid crystal displays, and discloses a reflective sheet, a liquid crystal module comprising the reflective sheet, and a liquid crystal display comprising the liquid crystal module. The reflective sheet is used for reflecting light emitted by a light emitting source in the liquid crystal module, the reflective sheet is a plane which is provided with a linear structure used for dividing the reflective sheet into multiple blocks which are connected into a whole, and the linear structure passes through an upper end face and a lower end face of the reflective sheet. The linear structure in the reflective sheet divides the reflective sheet, so that the large-size reflective sheet is divided into multiple small-size blocks which are connected into a whole, thus, the uniformity of the reflective sheet is maintained and the arching and wrinkling phenomena caused by expansion of the reflective sheet are avoided, the light reflected by the reflective surface is relatively uniform, the image effect of the liquid crystal module is improved greatly, the phenomenon of shadow does not appear in the image, furthermore, the cost, the weight and the thickness of the liquid crystal module can be greatly reduced.

The invention provides a kind of medical antibacterial tweezers with easy-to-change heads, comprising two elastic tweezers handles and two tweezers heads, one end of the two elastic tweezers handles is fixed together, the other ends are spaced apart from each other to form free ends, and the free ends of the two elastic tweezers handles are Corresponding positions are respectively provided with accommodating cavities and a card slot connected to the accommodating cavities on both sides of the symmetry. The two tweezers heads both include the front part of the tweezers head and the rear part of the tweezers head, and the rear part of the tweezers head is fixed Two elastic arms are installed, and the free ends of the two elastic arms are respectively provided with protrusions corresponding to the slots. The corresponding protrusions of the draw-in groove; the two elastic tweezers handles are made of the following raw materials in parts by weight: 80-90 parts of polypropylene, 10-15 parts of antibacterial filler, 1-2 parts of antioxidant; the invention provides Medical antibacterial tweezers are easy to change heads, with good antibacterial properties and biocompatibility; the surface is coated with a luminescent paint layer, which can emit light and is easy to find in dark places. It is also suitable for supplementing light when using tweezers in dark places. Will produce shadows.