47results about How to "Light transmittance has little effect" patented technology

The invention belongs to the technical field of anti-reflection films, and in particular relates to a method for preparing a double-thin anti-reflection film with high light transmittance: preparing a grass-like alumina sol and a solid silicon dioxide sol by a sol-gel method, and then dipping- The mixed sol was plated on the glass substrate by the pulling method, and the grass-like alumina plus silica solid pellets were treated with 1H, 1H, 2H, 2H-perfluorodecyltriethoxysilane by chemical vapor deposition. modified. The coating prepared by the invention has high light transmittance, and has excellent properties such as superhydrophobic, oleophobic, and self-cleaning. The sol-gel method is simple, scalable, low-cost and has high light transmittance. It is used in solar energy and architectural glass. , optical devices and other applications have great prospects.

The invention discloses a protective cover for a panoramic camera and relates to the technical field of imaging equipment. The invention includes a base, a connecting seat, a counterweight support column, a panoramic camera mounting seat, a panoramic camera, and a cover body; a regular N-gon ring cover of the cover body, a regular N-gon transparent cover, and a circular transparent cover plate; the cover body sleeve After installation, the connecting plate between the ring cover and the regular N-shaped transparent cover is just pressed against the top surface of the first pallet, and the fine height adjustment is carried out through the first adjustment hole and the second adjustment hole with the pin; the whole mechanism passes through External air enters into the regular N-gon transparent cover through the first air hole and the flow hole on the surface of the second pallet, overflows through the second air hole, or circulates in reverse to maintain heat dissipation and air circulation in the cover. The invention can realize fast, efficient and stable installation and disassembly in the outdoor scene, can be disassembled and carried separately, is easy to carry and transport, and the height adjustment is accurate and efficient, ensuring the efficient work of the panoramic camera.

The invention discloses an aluminate light conversion agent and a preparation method thereof as well as a light conversion film containing the aluminate light conversion agent. The general formula of the aluminate light conversion agent is A1-xZnxAl12O19: Mn<4+>, wherein A is at least one of Ca<2+>, Sr<2+> and Ba<2+> and x is more than or equal to 0 and less than 1. The preparation method comprises the following steps: sufficiently grinding metal oxide, nano metal oxide, alkaline-earth salt, an activating agent and a fluxing agent, and uniformly mixing; adding a mixture into a crucible; putting the crucible into a high-temperature furnace; and carrying out program temperature rising and cooling to obtain the aluminate light conversion agent. The light conversion film containing the aluminate light conversion agent is prepared from the following raw materials in parts by mass: 100 parts of a thin film matrix, 8-45 parts of a master batch matrix, 0.5-10 parts of the aluminate light conversion agent, 0.15-0.3 part of a lubricating agent, 0.5-1.5 parts of a light stabilizer and 0.3-1.5 parts of an antioxygen. The aluminate light conversion agent disclosed by the invention has the advantages of high light emitting strength, high light conversion efficiency, good stability, long service life and simple preparation method; the adding amount in an agricultural thin film is small, and the aluminate light conversion agent has good compatibility with the thin film matrix and has less influences on light transmittance of the thin film.

The invention relates to a light diffusing agent, a PMMA (polymethyl methacrylate) light diffusing plate and a manufacturing method thereof. The light diffusing agent is a random copolymer of styrene (St) and methacryloxypropylisobutyl polyhedral oligomer silsesquioxane (MAiBuPOSS). The PMMA light diffusing plate comprises the following components in percentage by weight: 97.0-99.5% of polymethyl methacrylate and 0.5-3.0% of light diffusing agent. The refractive indexes of the styrene component and the MAiBuPOSS component in the light diffusing agent differ from the refractive index of PMMA; when passing through a material, a light ray is refracted for many times and becomes bright and soft after passing through a substrate. Meanwhile, the MAiBuPOSS component ensures that the dispersibility of PS (Poly Styrene) in PMMA is remarkably improved, excellent light transmission and light scattering are obtained, and the optical efficacy is high. The PMMA light diffusing plate manufactured by the invention can be used for LED (Light Emitting Diode) illumination lamps, such as a plate lamp, an advertising lamp box, a professional film viewer, a down lamp and the like.

The invention discloses a flame-retardant light-diffusing PP material with anti-thermal oxygen aging function and a preparation method thereof, comprising polypropylene resin, composite flame retardant, light diffusing agent, composite antioxidant, high-temperature heat-resistant heat stabilizer, anti- Composed of UV agent and other additives. The flame-retardant light-diffusing PP material produced by the invention has the characteristics of high luminous flux, good flame retardancy, no precipitation of flame retardant during use, and long service life.