A filter in which the pass band is a wavelength range lower than the wavelength range that is blocked. Short pass filters pass all wavelengths shorter than the cut off wavelength. Short pass filters include IR cutoff filters, hot mirrors, and heat absorbing filters.
Specifications
Material: | Optical glass, fused silica |
Diameter: | +0/-0.2mm |
Thickness: | +/-0.1mm |
Clear aperture: | > 80% of diameter |
Surface quality: | 60-40 scratch and dig |
Transmitted wavefront, P-V | Lambda/4 |
Coating type: | Short pass filter |
Surface 1: | multi-layer dielectric coating |
Surface 2: | MgF2 |
Transmission: | >85% |
Slope: | 90% - 10% < 10nm |
Blocking: | Optical density, OD > 4 |
A filter in which the pass band is a wavelength range lower than the wavelength range that is blocked. Short pass filters pass all wavelengths shorter than the cut off wavelength. Short pass filters include IR cutoff filters, hot mirrors, and heat absorbing filters.
Specifications
Material: | Optical glass, fused silica |
Diameter: | +0/-0.2mm |
Thickness: | +/-0.1mm |
Clear aperture: | > 80% of diameter |
Surface quality: | 60-40 scratch and dig |
Transmitted wavefront, P-V | Lambda/4 |
Coating type: | Short pass filter |
Surface 1: | multi-layer dielectric coating |
Surface 2: | MgF2 |
Transmission: | >85% |
Slope: | 90% - 10% < 10nm |
Blocking: | Optical density, OD > 4 |
