Types of insulating glass
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.
To
How does heat-absorbing glass work?
The heat-absorbing glass adds some metal ions or substances to the glass to increase the absorption of light. The sun-shading coefficient of heat-absorbing glass is lower than that of transparent glass. The sun-shading principle is to reduce the number of times entering the room by absorbing solar energy from the optical lens.
To
Disadvantages: The heat-absorbing glass blocks some solar radiant heat in summer or winter, so it can be used to block the heat in the south instead of the north. Heat-absorbing glass actually absorbs radiation, and the heat absorbed by the glass will eventually be transferred indoors and outdoors. The heat-absorbing glass is not selective to the spectrum, which not only reduces the transmittance of sunlight, but also hinders the projection of visible light and affects the illumination.

How does coated glass work?
The purpose of coating glass is to coat one or more layers of metal, alloy or metal compound on the surface of the glass to change the performance of the glass. According to different characteristics, it can be divided into heat-reflective glass and low-emissivity glass.
To
1. Heat reflecting glass
The surface of heat reflective glass is coated with metal film and some interference layers, so that glass products can reflect more solar radiation, achieve the effect of shading, and have rich colors. Heat reflective glass has strong reflection on visible light and long-wave radiation. The function is to limit the solar radiation entering the room.
To
Disadvantages: The heat insulation performance of heat-reflective glass is no different from that of transparent glass, so it is not suitable for laser lenses in cold areas with large indoor temperature differences. In hot areas with strong light, its heat preservation effect is very good. Reflective glass can not only reflect the heat of solar radiation, but also restrict the entry of visible light, which will adversely affect indoor lighting. In addition, too high reflectivity will cause light pollution, and too low to achieve energy-saving effects.
To
2. Low-E glass
The low-E coating is formed by vacuum deposition on the glass surface. The function of the low-E coating is to reflect far-infrared radiation and effectively reduce the heat transfer coefficient of the glass high-power laser mirror; secondly, it reflects solar heat radiation to selectively reduce Shading coefficient; at the same time, compared with heat-reflective glass, low-e glass does not limit the penetration of visible light.
To
Disadvantages: Due to poor film strength, insulating glass is generally used instead of alone.
To
In the process of flat planetary grinding, the wear uniformity of the grinding disc is closely related to the grinding quality of the optical lens. By analyzing the movement law of the optical lens during the grinding of the plane planet, the calculation model of the rail mirror trajectory and the workpiece movement speed under the condition of the differential gear train is established, and the Matlab simulation program is compiled.