Abstract:
Provided is a filter, including a substrate layer and a near-infrared absorption layer on the substrate layer, wherein the near-infrared absorption layer includes a copper complex formed from a copper compound for supplying copper ion, phosphonric acid represented by formula 1 herein, and at least one phosphorus-containing compound represented by formulas 2 to 4 herein, wherein the OD value of the filter for the incident light wavelength from 930-950 nm is greater than 4. In the present disclosure, by setting a specific near-infrared absorption layer on the filter, the filter is able to efficiently absorb near-infrared and exhibit excellent visible light transmittance, and the burden of film post-processing can be reduced.
Abstract:
An absorption type near-infrared filter comprising a first multilayer film, a second multilayer film, and an absorption film, wherein in the ultraviolet band, the difference of between the wavelength with the transmittance at 80% of the absorbing film and the wavelength with the reflectivity at 80% of the first multilayer film falls in the range between 25 nm and 37 nm, the difference of between the wavelength with the transmittance at 50% of the absorbing film and the wavelength with the reflectivity at 50% of the first multilayer film falls in the range between 6 nm and 14 nm, and the difference of between the wavelength with the transmittance at 20% of the absorbing film and the wavelength with the reflectivity at 20% of the first multilayer film falls in the range between −6 nm and 2.5 nm.
Abstract:
Provided are an organometallic complex coating solution and a near-infrared absorption film, including an organometallic complex, a phosphorus-containing dispersant, and optical resin. The present disclosure greatly reduces the temperature and time of the film-forming process by formulating components of the organometallic complex coating solution.
Abstract:
A near-infrared absorbing glass is provided and includes 10% to 40% by weight of phosphorus and 5% to 35% by weight of iron, where a molar ratio of phosphorus to iron (P/Fe) of the near-infrared absorbing glass is between 1.75 and 5, and the near-infrared absorbing glass has an average transmittance of less than 10% to light with wavelengths ranging from 930 nm to 950 nm. A near-infrared cut-off filter including the near-infrared absorbing glass is also provided.
Abstract:
A light shielding sheet for a lens is provided, including: a metal substrate, including: a first surface; a second surface opposing the first surface; a first through light hole being in communication with the first surface and having hole radiuses gradually decreasing in a direction from the first surface to the second surface, a ratio of a depth of the first through light hole to a difference between two of the hole radiuses at two ends of the first through light hole being less than or equal to 0.5; and a second through light hole being in communication with the first through light hole and the second surface; and a light extinction film covering the first surface, the second surface, a hole wall of the first through light hole and a portion of a hole wall of the second through light hole of the metal substrate.
Abstract:
A diffuser includes a glass material and a plurality of scattering particles. The scattering particles are spread in the glass material, where the scattering particles are inorganic materials. The haze of the diffuser is larger than 99%, whereas the thickness of the diffuser ranges between 100 μm and 350 μm.
Abstract:
The present disclosure is related to a fluorescent glass for a light emitting diode and a manufacturing method thereof. The fluorescent glass for the light emitting diode includes a glass powder and a fluorescent powder, wherein the glass powder and the fluorescent powder are mixed to form a fluorescent glass, the material for manufacturing the glass powder comprises silicon dioxide with 20 wt % to 37 wt %, diboron trioxide with 31 wt %-47 wt % and calcium oxide with 16 wt %˜35 wt %, and the material of the fluorescent powder is selected from one of Ce-YAG, LuAG, silicate, and nitrides/oxynitrides fluorescent powder. The fluorescent glass of the present disclosure is formed by mixing and sintering the glass powder and the fluorescent powder and has low sintering temperature, so as to avoid the deterioration of color of the fluorescent powder due to high temperature. Therefore, the fluorescent glass of the present disclosure has good transparency, and the light emitting diode applying this fluorescent glass has good lighting efficiency.
Abstract:
An optical isolator for generally collimated laser radiation includes a single polarizing element, at least one Faraday optical element, at least one reciprocal polarization altering optical element disposed at the single polarizing element, at least one reflective optical element for reflecting radiation to provide an even number of passes through the at least one Faraday optical element, and a magnetic structure. The magnetic structure is capable of generating a magnetic field within the at least one Faraday optical element that is generally aligned with the even number of passes along a beam propagation axis. The optical isolator is configured to receive generally collimated laser radiation, which passes through the single polarizing element and the at least one reciprocal polarization altering optical element and which makes at least two passes through the at least one Faraday optical element, whereby generally collimated laser radiation is output from the optical isolator.