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Mid infrared optical glass

Product informationForm of supplyTechnical informationMajor application

Product information

Near and mid infrared glass, with a transmission band of 0.37-5 μm, and the refractive index (nd) ranging from 1.52 to 1.99. Its glass system includes the silicate system, the germanate system, the calcium aluminate system and the lead germanate system, etc.

Type	n₄	υ₄	n₃-n₅	Tg(℃)	ρ(g/cm3)	透過波段(μm)
IRG102	1.6226	14.76	0.0422	754	3.10	0.4～5.5
IRG105	1.8541	18.92	0.0452	552	5.62	0.5～5.5

Form of supply

Several brands, several forms of plain films or ball cover blank products can be provided as required by customers; and products with the diameter within Φ160mm can be provided in bulk.

Technical information

The difference between the refractive index nλ and Abbe number of each batch of products υ4 from the standard value is generally within the following tolerance range：

折射率nλ：±5×10-4 υ4：±0.8%

Major application

They are mainly used for infrared tracking, infrared detection and Infrared fairings and transparent infrared windows for near-infrared and mid infrared devices.