UV transmittance and transmission spectrum of optical quartz glass, JGS1, JGS2 and JGS3

Update time: 2025-08-08

Optical quartz glass grades and names

grade name Range of applied spectral bands (μｍ)
JGS1 Far ultraviolet optical quartz glass 0. 185~2. 5
JGS2 UV optical quartz glass 0. 220~2. 5
JGS3 Infrared optical quartz glass 0. 260~3. 5


JGS1 Classification of quartz glass for far ultraviolet optics

category　　 thickness 10mm Transmittance rate of raw materials (%)
0. 185μｍ 0. 200μｍ 0. 220μｍ 0. 240μｍ 0. 300μｍ 0. 185~1. 2μｍ
1 ＞85 ＞85 ＞85 ＞87 ＞90 No absorption peak
2 ＞70 ＞80 ＞80 ＞80 ＞85 No absorption peak
3
＞70 ＞70 ＞70 ＞80 Allow absorption peaks


JGS2 Classification of UV Optics Quartz Glass

category　　 thickness 10mm Transmittance rate of raw materials (%)
0. 220μｍ 0. 240μｍ 0. 300μｍ
1 ＞80 ＞75 ＞80
2 ＞75 ＞70 ＞75
3
＞65 ＞70


JGS3 Infrared optical quartz glass classification

category　　 thickness 10mm Transmittance rate of raw materials (%)
2. 0μｍ 2. 5μｍ 2. 7μｍ 2. 8μｍ 0. 2－2. 8μｍ
1 ＞90 ＞90 ＞90 ＞85 No absorption peak
2 ＞85 ＞85 ＞85 ＞80 No absorption peak
3 ＞80 ＞80 ＞75 ＞75 Allow absorption peaks


Based on the above information, The UV transmission spectrum of optical quartz glass is as follows:


Reference data for physical and chemical properties of optical quartz glass

hardness (mohs) : 5. 5　　　coefficient of linear expansion (－60~120℃) : 2. 1×10-7　　　melting point (℃) : 1700

refractive index: 1. 4585±4×10-4　　Central dispersion: 0. 00674±4×10-5　　   Dispersion coefficient: 68. 0