Optical quartz glass grades and names
| brand | name | Range of applied spectral bands (μ m) |
| 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 Far Ultraviolet Optical Quartz Glass
| Category | Transmittance rate of 10mm thick blank (%) | |||||
| 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 Optical Quartz Glass
| Category | Transmittance rate of 10mm thick blank (%) | ||
| 0. 220μｍ | 0. 240μｍ | 0. 300μｍ | |
| 1 | ＞80 | ＞75 | ＞80 |
| 2 | ＞75 | ＞70 | ＞75 |
| 3 | ＞65 | ＞70 | |
JGS3 Infrared Optical Quartz Glass Classification
| Category | Transmittance rate of 10mm thick blank (%) | ||||
| 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 Middle dispersion: 0.00674 ± 4 × 10-5 Dispersion coefficient: 68.0