27 May 2022 Bandpass Interference filters selectively transmit a narrow range of wavelengths while blocking all others, are widely used in instrumentation for clinical chemistry, environmental testing, , laser line separation etc. Interference filters are often used in conjunction with laser diodes and LEDs.
specification:
| Material |
optical glass |
| Design Wavelength |
4.5um |
| Surface Figure |
λ/2 |
| Diameter Tolerance |
+0.1, -0.1 mm |
| Thickness Tolerance |
±0.2 mm |
| Paraxial Focal Length |
±2% |
| Centration |
<3 arc minutes |
| Clear Aperture |
>85% |
| Surface Quality |
60-40 scratch and dig |
| Protective Bevel |
0.25 mm x 45° |
|
