Poetry recitation makes the world brighter.

Speaking of glass, everyone must be familiar with it. For example, the common windows, glasses, mirrors, lenses, glass balls and so on in our daily life are all made of glass. So when it comes to optical glass, I think many people will find it strange. Compared with ordinary glass, optical glass has special and stricter indexes. It is inseparable from the manufacture of optical instruments. The lenses of advanced optical instruments such as telescopes, cameras and camcorders are all made of optical glass. Optical glass is widely used because of its high transparency and certain quality. Then, let's take a look at the main types of optical glass and their respective characteristics!

1. Colorless optical glass

Colorless optical glass has strict requirements on optical constants and is specific. It is characterized by non-selective absorption and high permeability. Colorless optical glass can be divided into crown glass and flint glass according to Abbe number, and can also be divided into 16 according to refractive index and dispersion coefficient. Colorless optical glass is mostly used in telescopes, cameras, microscopes, etc.

2. Colored optical glass

Colored optical glass is mainly used to make optical filters, so it is also called filter glass. Its absorption of light has the characteristic of selective transmission. According to the spectral characteristics, it can be divided into absorption type, cut-off type and neutral gray.

3. Radiation-proof optical glass

Radiation-proof optical glass has a strong absorption ability to strong irradiation light, which can prevent γ -ray and X-ray irradiation and absorb slow neutrons and thermal neutrons. At present, it is mainly used as a window material in the medical and nuclear fields.

4. Radiation-resistant optical glass

The varieties of radiation-resistant optical glass are very similar to colorless optical glass. Under certain γ -ray and X-ray irradiation, its transmittance changes little, and it is often used to manufacture some optical instruments and shielding peep windows under high energy irradiation.

5. Ultraviolet and infrared optical glass

Ultraviolet and infrared optical glasses have specific optical constants and high transmittance, and are mainly used to manufacture ultraviolet and infrared optical instruments.

6. Optical timely glass

Optical timely glass has good performance, low expansion coefficient, high mechanical strength and high temperature resistance, and is often used to manufacture prisms, lenses, mirrors and windows with special requirements.

Optical glass occupies a certain position in photoelectric technology. Secondly, it also plays an important role in physics and chemistry. At present, the development of optical glass in China is very rapid, and I believe its prospect will be bright.

Tubatu Online provides you with "every decoration quotation, 1-4 local decoration companies, 3 sets of decoration design schemes" and the decoration pit avoidance strategy for free! Click this link:/Zhu Ye /zxbj-cszy.php? to8to _ from = SEO _ zhidao _ m _ jiare & amp； Wb, you can get it for free ~