Product Introduction
Chalcogenide glass is a type of glass composed of sulfur, selenium, and tellurium—three elements from Group VIA of the periodic table, excluding oxygen and polonium—and other elements (such as arsenic, antimony, and germanium), or even these elements combined with each other. It exhibits the following excellent properties:
- The far-infrared transmittance exceeds 64% (wavelengths from 8 μm to 12 μm), and after coating, the transmittance can reach over 95%.
- Lower Tg and Ts temperatures are ideal for precision molding of aspheric lenses, helping to reduce the production costs of mass-produced lenses.
- A lower refractive index temperature coefficient makes it an excellent material for designing infrared athermalized lenses and W-head components, enabling achromatic and thermally stable optical systems free from defocusing.
Sulfide glasses are widely used in fields such as infrared monitoring, temperature measurement, medical applications, detection, and guidance.
Sulfur-based lens blanks
Sulfide glasses are widely used in fields such as infrared monitoring, temperature measurement, medical applications, detection, and guidance systems.
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