Optical glass refers to glass that can change the direction of light transmission and can change the relative spectral dispersion of ultraviolet, visible or infrared light. Optical glass in the narrow sense refers to colorless optical glass; optical glass can be used to make lenses, prisms, mirrors and windows in optical instruments. The difference between optical glass and other glasses is that it is a component of the optical system, which requires optical imaging requirements. Therefore, the quality of optical glass also contains some stricter indicators. Below, Beibei Hanyuan teaches you how to judge whether the optical glass is good or not? 1. Specific optical constants and identical varieties of the same batch of glass optical constants. Optical glass has regular and normative refractive index values u200bu200bfor light of different wavelengths, which serve as the basis for optical planners to plan optical systems. Therefore, the optical constants of the optical glass produced in the factory must be within the allowable error range of these values, otherwise the actual imaging quality will be inconsistent with the expected results during planning and the quality of the optical instruments will be affected. 2. Transparency The image brightness of the optical system is proportional to the glass transparency. The transparency of optical glass to light of a certain wavelength is expressed by the light absorption coefficient Kλ. After the light passes through a series of prisms and lenses, some of its energy is lost by the interface reflection of the optical parts and some of its energy is absorbed by the medium (glass) itself. Therefore, for an optical system containing multiple thin lenses, the main way to increase the transmittance is to reduce the reflection loss of the lens surface, such as coating the surface with an anti-reflection coating. Chongqing Beibei Hanyuan Optical Glass Factory is a technology-based enterprise with more than ten years of development history. It integrates Ru0026D, production, and sales. It is market-oriented and meets or exceeds customer expectations. I believe you will not be disappointed. !