Dichroic Long-Pass Filter
Dichroic long-pass filters are made from multiple layers of dielectric and metal materials, reflecting shorter wavelengths and transmitting longer wavelengths. The coating is designed for 50% reflectance and 50% transmittance at the cutoff wavelength, with transmission increasing and reflection decreasing at longer wavelengths. Different cutoff wavelengths can be designed for specific applications.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Material | B270 |
| Outer Diameter Tolerance | -0.1mm |
| Thickness Tolerance | ±0.05mm |
| Surface Figure [632.8] | 1（0.5）@632.8 |
| Surface Finish | 40/20 |
| Edge | Ground; Bevel Width≤0.3mm |
| Effective Aperture | 90% |
| Parallelism | <5” |
| Average Reflectance Ravg [740 to 795 nm；45° AOI] | >95% |
| Average Reflectance Ravg [810 to 900 nm；45° AOI] | <5% |
Applications
Datasheet
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Supplier Information
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