Made from BK7 material, which has transparent range from 330-2100nm. The refractive index is 1.5168 at 587.6nm. The BK7 window has good performance over visible and near IR spectrum for most application.
Specifications:
| Material: | BK7 grade A optical glass |
| Dimension Tolerance: | +0.0, -0.1mm |
| Thickness Tolerance: | ± 0.1mm |
| Surface quality: | 60/40(Standard), 10/5(High Precision) |
| Clear Aperture: | >85% |
| Flatness: | λ(Standard), λ/10(High Precision) per 25mm@633nm |
| Parallelism: | 1' (Standard), 10" (High Precision) |
| Bevel: | <0.25mm X 45° |
| Coating: | Upon requirement |
Typical Sizes:
|
Round Shape |
Φ5.0；Φ10.0 ；Φ12.7；Φ15.0；Φ20.0； Φ25.4；Φ30.0；Φ38.1；Φ50.8；Φ76.2 |
|
Square Shape: |
5.0x5.0 ；10.0x10.0 ；15.0x15.0 ； 20.0x20.0；25.0x25.0；50.0x50.0 |
|
Thickness Tolerance: |
0.5；1.0；1.5；2.0；3.0； 4.0；5.0；6.0；8.0；10.0 |