Specifications:
| Filter Type | Shortpass Filter | Material | K9 |
| Dimension(mm) | / | Transmission Wavelength Range | 410-650nm |
| Rejection Wavelength Range | 350-1100nm | Cut-on Wavelength | 680nm±5 |
| Blocking Depth | >OD3 | Transmission Rate | >90% Average |
| Dimensional Tolerance | / | Surface Quality | 60/40 S/D |
| Operating Temperature | / | Clear Aperture | / |
680nm Shortpass Filter, Code:40302-007
Shortpass (SP) filters, also known as shortpass edge filters, transmit light wavelengths shorter than a specified cut-off wavelength. They achieve this through engineered thin-film coatings or absorptive colored glass that interact with incoming light. UV shortpass filters, a critical subtype, allow ultraviolet (UV) light transmission while blocking longer wavelengths, serving applications like fluorescence microscopy and UV spectroscopy.
Hangzhou Shalom EO uses vacuum coating for TiO2 and SiO2 coatings, offering short-pass filters with cut-off wavelengths ranging from 420-1200nm, spanning the UV to IR spectral range. These filters feature steep cut-off slopes, >90% transmission in the pass zone, and >OD4 rejection in the rejection zone.
