B270 colorless optical glass windows
Product description:
Colorless optical glass is mainly for BK7, B270, quartz glss of JGS1,JGS2,JGS3 and other materials. And we can custom made according to customers requirements. Its transmission is 7% higher than common glass, it can arrive at 99%.
And B270 show windows common size for 300*400, 400*600, etc.
| Colorless optical glass--B270 technology requirement |
| Model |
Thickness |
λtj |
λ0 |
Tλ0 |
K |
| (mm) |
(nm) |
(nm) |
(%) |
| B270 |
1-5 |
310±10 |
400 |
≥89.5 |
≥1.0 |
B270 Ultra White Glass
| Nature of optical |
Through rate |
| nd |
1.5230 |
| ne |
1.5251 |
| ve |
58.3 |
| 2mm |
91.7% |
| 4mm |
91.6% |
| 15mm |
91.0% |
| Mechanical performance |
Standard value |
| Density |
2.55g/cm3 |
| Knoop hardness HK 100 |
542kg/mm2 |
| Young's modulus E |
71.5kN/mm2 |
| Poisson's ratio μ |
0.208 |
| Thermal properties |
Standard value |
| Strain point |
511°C |
| Annealing Point |
541°C |
| Softening point |
724°C |
| Coefficient of thermal expansion |
9.4×10E-6/K |
| Chemical performance |
Standard value |
| Deliquescence(ISO719) |
HGB3 |
| Acid resistance(ISO1776) |
2 |
| Alkaline resistance(ISO695) |
A2 |
Technology Index:
Production:
Package:
Delivery:
Audited Supplier 
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