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lcogenide glasses for IR Optics,
photonics and sensor application

Chalcogenide glasses developed in Salient Technical Features
customized sizes and compositions Extended transmission in the MWIR
are poised to replace germanium (3 – 5 μm) and FWIR (8 – 12 μm)
optics for thermal imagers and bands; Lower temperature coefficient
night vision devices. CSIR-CGCRI of refractive index (dn/dt), wider
is working towards developing such transmission window, higher usage
glasses for cost-effective solution for temperature than Ge single crystal;
strengthening the national defence Cost-effective and easier fabrication
sector. for lens production; Suitable for
fabrication of uncooled thermal
imaging devices

State of Commercialization
Intellectural Property Rights (IPR) : No Lab scale development

Level/Scale of Development: Lab Major Raw Materials Utilized

scale development Chalcogens (S, Se, Te, Sb, As, Ge)

Application Major Plant, Equipment and
Machinery Required
Thermal imaging, supercontinuum Glove box, rocking furnace, annealing
sources, amplifiers/lasers, sensors and furnace, distillation unit, ampule
environmental monitoring devices. sealing unit and glass processing
Wide application in defence sector equipment.

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