Optical quartz glass
Quartz glass has excellent optical spectrum property . It can transmit far UV spectrum , is the best one of all UV transmitting materials ,and also transmit visible light and near infrared spectrum . The user can select any sort within the wave-range of 185 mu~3500mu .For its excellent properties ,such as : high temperature proof ,low thermal expansion ,chemical stability ,thermal stability ,and similar to ordinary optical glass in bubble , striae ,homogeneity ,birefringence, optical quartz glass became an essential optical material for high stability optical system under worst conditions .
Among the above mentioned products ,the HS infra-red optical quartz glass was awarded the " China National silver medal " for its excellent quality .
ZS-1 is a kind of synthetic quartz glass made from high pure tetrachloride silicon . It is characterized for the freedom from the bubbles ,highest purity of material ,the best transmittance in far UV spectrum ,high resistance to radiation . Wave length used :175 -2500 nm . Because formed by a " wet " process ,the fundamental vibrational band of incorporated structural hydroxyl ions will absorb strongly at 2730 nm . No grain structure .
ZS-2 is a kind of quartz glass made from synthetic or high pure silica raw material . Bubble free ,no grain structure . It has absorption at 2730 nm . Wave length used : 200-2500 nm
HS is made from quartz crystal by electric fusion . It is an ideal optical material whose advantages are almost no (OH) ,bubbles and striae , good transmission in IR spectrum .Wave length used : 260-3500nm .
Refraction index and Dispersion of Quartz glass
Ks visible quartz glass is made by H2,O2 fusion crystal ,strongly absorbes at waveband : 200-2500nm and 2600-3800nm .
ZKHS is SiCi4 synthetic quartz glass ,made by electric fusion . Its characteritics : no absorption at 185-3500nm ,high purity , bubble free ,no grain structure . ZKHS is the optimum one in quartz glass .
According to 7 indexes ( optical transmission and so on ) optical quartz glass is graded ( JC/T185-1996) :
A : optical transmission : 2 grades ;
B: Optical homogeneity: 5 grades ;
C:Birefraction : 5 grades
D:Stria : 2 grades
E: Grain non-homogeneity: 3 grades
F: Bubble : 7 grades
G: Fluorescence : 2 grades
The best grade for (100 g weight ) and most weight of our optical quartz glass :
Quartz glass has excellent optical spectrum property . It can transmit far UV spectrum , is the best one of all UV transmitting materials ,and also transmit visible light and near infrared spectrum . The user can select any sort within the wave-range of 185 mu~3500mu .For its excellent properties ,such as : high temperature proof ,low thermal expansion ,chemical stability ,thermal stability ,and similar to ordinary optical glass in bubble , striae ,homogeneity ,birefringence, optical quartz glass became an essential optical material for high stability optical system under worst conditions .
Among the above mentioned products ,the HS infra-red optical quartz glass was awarded the " China National silver medal " for its excellent quality .
ZS-1 is a kind of synthetic quartz glass made from high pure tetrachloride silicon . It is characterized for the freedom from the bubbles ,highest purity of material ,the best transmittance in far UV spectrum ,high resistance to radiation . Wave length used :175 -2500 nm . Because formed by a " wet " process ,the fundamental vibrational band of incorporated structural hydroxyl ions will absorb strongly at 2730 nm . No grain structure .
ZS-2 is a kind of quartz glass made from synthetic or high pure silica raw material . Bubble free ,no grain structure . It has absorption at 2730 nm . Wave length used : 200-2500 nm
HS is made from quartz crystal by electric fusion . It is an ideal optical material whose advantages are almost no (OH) ,bubbles and striae , good transmission in IR spectrum .Wave length used : 260-3500nm .
Refraction index and Dispersion of Quartz glass
Type Properties |
Transparent quartz glass from quartz crystal | Synthetic quartz glass |
Nd (He 587.56nm) | 1.45857 | 1.45847 |
Nf (H 486.13 nm) | 1.46324 | 1.46314 |
Nc (H 656.27 nm) | 1.45645 | 1.45637 |
γ =(Nd-1)/(Nf-Nc) Nf-Nc | 67.6 0.00678 | 67.7 0.00677 |
Ks visible quartz glass is made by H2,O2 fusion crystal ,strongly absorbes at waveband : 200-2500nm and 2600-3800nm .
ZKHS is SiCi4 synthetic quartz glass ,made by electric fusion . Its characteritics : no absorption at 185-3500nm ,high purity , bubble free ,no grain structure . ZKHS is the optimum one in quartz glass .
According to 7 indexes ( optical transmission and so on ) optical quartz glass is graded ( JC/T185-1996) :
A : optical transmission : 2 grades ;
B: Optical homogeneity: 5 grades ;
C:Birefraction : 5 grades
D:Stria : 2 grades
E: Grain non-homogeneity: 3 grades
F: Bubble : 7 grades
G: Fluorescence : 2 grades
The best grade for (100 g weight ) and most weight of our optical quartz glass :
Type Test Item |
ZS-1 | ZS-2 | KS | HS | ZKHS |
Bubble | 0 | 2 | 2 | 1 | 1 |
Medium transmisson | 180-2500nm | 200-2500nm | 250-2500nm | 260-3500nm | 185-3500nm |
>90% | >85% | >85% | >85% | >85% | |
Birefraction | 1-2 | 1-2 | 2 | 1-2 | 1-2 |
Grain structure | 1 | 2 | 2 | 2 | 1 |
Stria | 1-2 | 1-2 | 2 | 1-2 | 1-2 |
Homongeneity | 1-2 | 2 | 2 | 2 | 1-2 |
Fluorescence | 1 | 2 | 2 | 2 | 1 |
Radiation proof | No color changing | Tiny color changing | Color changed | Color changed | No color changing |
Max weight ( kg) | 20 | 20 | 20 | 100 | 100 |