|Materials||Chalcogenide glass||Diameter Range||~100mm|
|Diameter Tolerance||+0.0/-0.2mm||Thickness Tolerance||+/-0.05mm|
|Surface Quality||60/40 S/D||Frings (N)||3|
|Irregularity (delta N)||1||Centration||3'|
|Chamfer||0.1-0.3mmx45 degree||Coatings||AR/AR@3-5µm |
Listed below is a Glass Code Reference Chart of Chalcogenide Glass from the elite manufacturers, identical glass codes are written in the same row. Shalom EO in general would use the IRG20X series chalcogenide materials from Chinese supplier NHG （New Huaguang). Click here to view the properties of the NHG Chalcogenide Glasses IRG Series.
Chalcogenide Glass Components (e.g chalcogenides lenses/balls) are becoming topical issues in various applications operating in the IR region due to their excellent optical and mechanical properties. Chalcogenide glass features a broad IR transmission wavelength range in the LWIR/MWIR region (3-5 micro, 8-12 micro) with a superior transmission rate within the range. The thermal properties of Chalcogenide glass is also remarkable, with low temperature coefficients of refractive index, Chalcogenide lenses are attractive candidates for producing passive optical athermalized IR lens assemblies of compact and lightweight design. Furthermore, Chalcogenide glass has a lower softening point and mechanical hardness than common crystal materials, therefore could be processed into various optical components with higher efficiencies. The preparation of Chacogenide glass consumes much less Germanium, therefore its ingredient cost is often cheaper than common IR crystal materials ( 1/4 of that of Germanium). It is also feasible, using high precision molding, to realize bulk production of aspheric Chalcogenide glass lenses, which are useful for rectification of chromatic aberrations, and even achieving achromatic performances, thus enhancing the image quality.
Hangzhou Shalom EO offers Custom Chalcogenide Glass Lens and Chalcogenide Glass Ball Lens with a maximum diameter of 100mm and anti-reflection coatings at LWIR and MWIR regions. The lens forms (ball lens, aspheric lens, convex lens, concave lens, etc.) dimensions, and other parameters could all be tailored for you. Various Chalcogenide Glass Materials could be selected upon your request, the majority being the Chinese IRG series from NHG, the glass codes including IRG201, IRG202, IRG203, IRG204, IRG205, IRG206, IRG207, while other similar glass codes from other sources could also be arranged.