Dichroic Shortpass Filters
Dichroic Shortpass Filters transmit light with wavelengths shorter than the cutoff wavelength. Fabricated from optical-grade float glass, these dichroic filters are widely applied in fluorescence excitation spectral analysis, beam splitting and beam combining. The average reflectance of the reflection band exceeds 98%. All dichroic filters are designed for a 45° angle of incidence. All dichroic beam splitter filters are designed for a 45° angle of incidence. The filters feature low polarization dependence, broad spectral ranges.
Parameters
| Material: H-K9L (CDGM) | TWE: λ/4@633 nm |
| Parallelism: < 30″ | Surface Quality: 60/40 |
| Dimension Tolerance: + 0.0/ -0.2 mm | Thickness: 2 ± 0.2 mm |
| Central Wavelength tolerance: ± 10 nm | Transmission**: Tavg > 90% |
| Reflection**: Ravg > 98% | Clear aperture: > 90% |
| AOI: 45° | Central wavelength(λC): The wavelength with transmission = 50% Tmax |
**The incident light is in random polarization.
Model
| Diameter (mm) | CWL(nm) | Transmission band | Reflective band |
| 12.50×17.50, 25.00×36.00 | 450nm | 370~430nm | 470~545nm |
| 500nm | 370~480nm | 520~610nm | |
| 550nm | 400~530nm | 575~725nm | |
| 600nm | 400~580nm | 625~795nm | |
| 650nm | 400~630nm | 675~850nm | |
| 700nm | 400~680nm | 725~900nm | |
| 750nm | 400~725nm | 800~990nm | |
| 800nm | 400~775nm | 850~1050nm | |
| 850nm | 400~820nm | 910~1110nm | |
| Φ12.50/Φ25.00 | 450nm | 370~430nm | 470~545nm |
| 500nm | 370~480nm | 520~610nm | |
| 550nm | 400~530nm | 575~725nm | |
| 600nm | 400~580nm | 625~795nm | |
| 650nm | 400~630nm | 675~850nm | |
| 700nm | 400~680nm | 725~900nm | |
| 750nm | 400~725nm | 800~990nm | |
| 800nm | 400~775nm | 850~1050nm | |
| 850nm | 400~820nm | 910~1110nm |