Long wave dichroic filter
PRODUCT CATEGORIES
- Dichroic spectroscopic filter can be used to transmit wavelengths longer than the starting wavelength or shorter than the cut-off wavelength. It is divided into long wave pass filter and short wave pass filter.
- Dichroic spectrograph can be used in fluorescence excitation spectrum analysis, beam separation, beam combination and other occasions.
Technical parameters
| Items | Parameters |
|---|---|
| Material | Optical grade float glass (B270) |
| Surface quality | 40/20- 60/40 |
| Effective aperture | 90% |
| Center wavelength (CWL) | 425nm, 450nm, 500nm, 550nm, 600nm, 650nm, 700nm, 750nm, 800nm, 850nm |
| Reflection waveband | 370~400nm, 370~430nm, 370~480nm, 385~520nm, 460~570nm, 495~615nm, 535~665nm, 565~715nm, 600~760nm, 635~810nm |
| Transmission waveband | 440~1200nm, 465~1200nm, 515~1200nm, 565~1200nm, 620~1200nm, 670~1200nm, 720~1200nm, 770~1200nm, 820~1200nm, 870~1200nm |
| Dimensional error | +0.0/-0.1mm |
| Central wavelength（ λ C) Tolerance | ± 10nm transmittance |
| Transmitted wavefront error | λ/4@633nm |
| Reflectivity | Ravg＞98% |
| Incident angle | 45° |
spectral curve
In addition, We can customize the optical filters according to customer requirements or drawings.
For details, please consult:
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