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2021-11

Introduction of infrared optical materials

Infrared optical materials refer to a class of materials used in guidance technology and infrared imaging to manufacture filters, lenses, prisms, windows, fairings, etc. These materials have physical and chemical properties to meet the needs, that is, the main indicators are: good infrared transmittance and wide projection band. Generally speaking, the transmittance and transmission of infrared optical materials are closely related to the internal structure of the material, especially the chemical bond and energy level structure. For example, for crystalline materials, the short-wave absorption limit mainly depends on the band gap, while the long-wave limit depends on phonon absorption, that is, lattice vibration absorption.

Nov 12,2021

2021-11

High-end telescope filter

The main optical components of the telescope are the objective lens, eyepiece and prism. The coating can reduce light loss and reflection caused by reflection, and improve the transmission rate and contrast of light.

Nov 12,2021

2021-11

Types of insulating glass in optical lenses

Insulation glass has special absorption, transmission and reflection capabilities for light and heat. The use of building exterior windows and glass curtain walls can achieve significant energy-saving effects. Commonly used thermal insulation glass includes heat-absorbing glass, coated glass and insulating glass.

Nov 12,2021

2021-11

An indispensable component in the optical glass vision system

Optical glass can change the direction of light transmission, and can change the relative spectral dispersion 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, Window and mirror, etc.

Nov 03,2021

2021-11

What causes damage to optical lenses?

Whether it is an optical lens made of inorganic or organic material, in daily use, friction with dust or grit (silicon oxide) will cause the lens to wear and scratches on the surface of the lens. Compared with glass flakes, organic materials have lower hardness and are more prone to scratches. Through the microscope, we can observe that the scratches on the lens surface are mainly divided into two types. One is the scratches caused by grit, which is shallow and small, and it is not easy for the wearer to detect; the other is the scratches caused by the larger grit. , Deep and rough periphery, in the center area will affect vision.

Nov 03,2021

2021-11

Which is better, middle glass or double glass?

Insulating glass is a glass deep-processed product that consists of two or more pieces of flat glass, separated by a spacer frame on the periphery, and sealed with a sealant, so that a dry gas space is formed between the glass layers. It should be reminded that the edge of the hollow glass is strictly sealed with sealant. The inner cavity of the hollow glass is filled with dry air or inert gas. This part of the gas is sealed in the cavity for a long time and cannot be convective with the outside air. Therefore, The heat on both sides of the hollow glass will not take away the heat due to the convection of the gas between the glass.

Nov 03,2021

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