Optical glass plano convex cylindrical Lens refers to glass that can change the direction of light transmission and can change the relative spectral dispersion of ultraviolet, visible or infrared light. Narrow optical glass refers to colorless optical glass; optical glass can be used to make lenses, prisms, mirrors and windows in optical instruments. Optical glass cylinder lenses are different from other glasses in that it is a component of an optical system and must meet the requirements of optical imaging. Therefore, the determination of the quality of optical glass also includes some special and severe indicators.
The streaks that occur in ordinary glass are mainly due to the non-uniformity of the cooperative materials; the corrosion of refractory materials (primarily the introduction of Al); and the agitation when making glass products.
Therefore, optical glass must start from these aspects. The purity of the raw materials is required to be> 99%, the impurities are less than a few hundred thousandths, and the particle size of the materials and the weighing have high requirements. Furnace adopts ceramic or platinum as refractory. Generally, only casting method, rolling method, cylinder breaking method and liquid method are used for molding, which effectively avoids agitating the glass during molding.
Optical glass can change the direction of light transmission, and can change the relative spectral spread of ultraviolet, visible or infrared light. Optical glass has stable optical properties and high optical uniformity. Optical glass has the advantages of high temperature resistance, low expansion coefficient, high mechanical strength, and good chemical properties. It is used to make prisms, lenses, and Windows and mirrors.
Optical Glass Plano Convex Cylindrical Lens
High precision optical glass dome manufacturer believes that optical glass lens is an indispensable part in machine vision system, which directly affects the quality of imaging quality and affects the implementation and effect of algorithms. Because different glass types have different characteristics, it is important to choose an optical glass material.
1. High transmittance of optical glass ---- The transmittance can reach 92%. If the lens surface is coated with one or more layers of anti-reflection film of magnesium fluoride, the transmittance of the lens can reach 99.2%.
2. Optical glass is chemically stable-resistant to chemical substances such as acids and alkalis.
3. The refractive index of optical glass is constant and accurate ---- The refractive index is 1.523, which is constant and accurate, and the refractive power is accurate after processing.
4. Optical glass absorbs ultraviolet rays-to avoid damage to the eyes by ultraviolet rays.
These are all articles about optical glass that do not produce streaks.