Linear Variable Filter
Linear Variable Filter is a wedged filter, the center wavelengths change continuously
along one dimension of the filter. A single Linear variable filter could replace a number of fixed
filters in an instrument, the center wavelength could be adjusted by sliding the filter. A band pass filter
can be realized by combing Linear Variable Long Wave Pass filter and Linear Variable Short Wave Pass filter, and it is possible to meet deeper blocking by overlaying two linear variable filters.
l Hyperspectral Imaging
l Fluorescence Microscopy
l Medical Endoscope
l Compact
l Light efficient
l Hight SNR
Standard Products
Material | Optical, Glass Fused Silica, Silicon, Sapphire | |
Size(Effective area) | 22.5mm*13.7mm | 22.5mm*13.7mm |
Wavelength Ranges | 380nm-850nm | 400-1000nm |
Peak Transmission | 5%-90% | ≥60% |
Bandwidth(FWHM) | 2% of center wavelength | 1.5% of center wavelength |
Blocking | OD3 | OD3 |
Linearity | 22.3nm/mm | 50nm/mm |
Surface Quality | 60-40 | 60-40 |
Transmitted Wavefront distortion | λ/10 | λ/10 |
