Designed to transmit wavelengths shorter than the cut-off while blocking longer spectral regions. These filters feature steep transitions and high rejection, ideal for fluorescence microscopy and imaging applications.
Diameter range: 5 mm- 200 mm ±0.1 mm
Dimensional tolerance: ±0.05mm
Center wavelength: 350nm-2500nm
Surface Accuracy: λ/8
A short-pass filter is a type of cutoff filter (also known as an edge filter) within the category of interference filters. Cutoff filters are generally classified into long-pass and short-pass filters, designed to transmit light within a specific wavelength range while transitioning to reject (cut off) wavelengths outside this range. Typically, filters that reflect (cut off) shorter wavelengths and transmit longer wavelengths are referred to as long-pass filters. Conversely, those that transmit shorter wavelengths and reject longer wavelengths—effectively isolating the longer wavelengths—are designated as short-pass filters.
| Material | K9, Bk7, GJS1, GJS2,GJS3, B270 |
| Diameter tolerance | ±0.05 mm |
| Surface accuracy | λ/4@ 633nm or λ/10@633nm |
| Surface quality (S/D) | 60/40 or 20/10 |
| Effective caliber | 90% |
| Chamfer/beve | <0.1*45° |
| Center wavelength | 350nm-2500nm |
| Peak transmittance | >90% customized upon request |
| Half-peak bandwidth | 10nm-15nm |
