Silicon (Si) single crystal is a chemically inert material with high hardness and insoluble in water. It has good light transmittance in the 1.2-7μm band, and it also has good light transmittance in the far-infrared band of 300-300μm, which is a feature that other optical infrared materials do not have.
Silicon (Si) single crystal is usually used as the substrate for 3-5 μm mid-wave infrared optical windows and optical filters.
Due to its good thermal conductivity and low density, this material is also used to make laser reflectors or infrared temperature measurement and infrared optical lenses. Commonly used materials.
Silicone Window Glazing
Silicon window, that is, a film window made of silicone rubber, is mainly used to adjust the gas composition inside plastic tents or bags for storing fruits, vegetables, grain and other items to extend the storage period and maintain product quality.
During the production process, silicone rubber undergoes mixing, vulcanization, hot air continuous vulcanization or solution coating to form a thin film.
The silicone rubber film has good selective air permeability, and its permeability to nitrogen, oxygen, carbon dioxide and other gases at room temperature is 30-50 times higher than other materials such as natural rubber.
Silicon windows can effectively control the gas composition in the storage environment, for example, controlling oxygen at 2% to 4% and carbon dioxide at 5% to 7% to achieve the best preservation effect.
Specifications
| Materials | Silicon |
| Diameter Toelrance | +0.0/-0.05mm |
| Diameter | D2-D300mm |
| Focal length Error | ±2%（for lens） |
| Center Deviation | ≤0.01mm |
| Surface Shape Accuracy | 1λ |
| Local Aperture Accuracy | λ/4 |
| Surface Finish | 40-20 |
| Bevel | 0.25 mm × 45° |
| Coating | AR，DLC |
| Materials | silicone rubber |
| Transmittance | transmittance of nitrogen, oxygen, carbon dioxide and other gases is 30-50 times higher than that of natural rubber (room temperature) |
| Function | Adjust the gas composition in the storage environment to preserve freshness |
| Application | fruits, vegetables, grain, etc. |
| Dimension | customized, common sizes may include round windows with diameters of 25.4mm, 38.1mm, 50.8mm, etc. |
| Thickness | customized |
| Operating Temperature | Room temperature or a temperature range determined according to the characteristics of the silicone rubber material |
| Optimal Reserve Gas Ratio | oxygen 2% 4%, carbon dioxide 5% 7% (generally recommended ratio) |