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? ??