Wavelength range as wide as 338-800nm Access any center-wavelength in nanometer increments Images pass through filters making it suitable for both excitation and emission Easily switch between fluorphore combinations Optional liquid light guide offers absolute vibration isolation All the advantages of thin-film technology - high transmission, steep spectral edges, high out-of-band blocking Polarization independence (s and p nearly identical)
A specific wavelength within the wide spectral range of each filter is obtained by adjusting the angle of incidence from 0 to 60 degrees. This tuning causes little or no change in spectral performance of the filter regardless of the state of polarization of the light passing through the filter. The current VersaChrome® series has 7 filters covering 338 to 800nm. By simply selecting the desired center-wavelength on the controller, the Lambda VF-5 automatically moves and tilts one of its five filters into position. Users can select any combination of filters offered by Semrock® for the Lambda VF-5 (which holds up to 5 filters) or any single filter in the series for the Lambda VF-1. When using the Lambda VF-5 for emission applications, we suggest installation of the 5 filters with the longer center-wavelengths covering from 430nm to 800nm. For excitation applications, we suggest installing the 5 filters with the shortest wavelengths covering 338 to 620nm. For special applications, any combination of 5 filters could be installed in the Lambda VF-5. The compact Lambda VF-1 accepts any single filter in the series. The single VersaChrome® filter installed in the Lambda VF-1 can be changed as needed.
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