infrared ir longpass optical filter
Optical Filters are used to selectively transmit or reject a wavelength or range of wavelengths. Optical Filters are used in applications such as fluorescence microscopy, clinical chemistry, spectroscopy, or machine vision inspection. Optical Filters are ideal for life science, imaging, industrial, or defense industries.
Optical window materials comparison:
| Material |
optical glass |
| Design Wavelength |
632.8 nm |
| Surface Figure |
λ/2 |
| Diameter Tolerance |
+0.1, -0.1 mm |
| Paraxial Focal Length |
±2% |
| Centration |
<3 arc minutes |
| Clear Aperture |
>90% |
| Surface Quality |
60-40 scratch and dig |
| Protective Bevel |
0.25 mm x 45° |
