Description
Sutter Instrument has developed several filter changers specially designed for wavelength selection over a wide spectral range to any given nanometer value. The Lambda VF-5™, Lambda VF-10, Lambda VF-1™ employ the innovative VersaChrome® thin-film filter technology from Semrock® to provide outstanding bandpass characteristics such as high transmission (close to 100%), steep edges and out of band blocking. Since these filters pass an image, they are equally suitable for emission and excitation paths.
The Lambda VF-1 - The Lambda VF-1 accepts any single filter in the series, which can be exchanged with other filters as needed. This model offers faster switching times as well as a more compact and affordable system. When used with the Lambda VF-1, the controller is able to also control a separate filter wheel or SmartShutter.
The Lambda VF-5 - Along with the ability to select any wavelength in the range covered by any combination of 5 VersaChrome filters, the Lambda VF-5 has a patented white-light output mode that allows the user to access the full spectral output of the excitation light source when it is required. White-light output is achieved by capturing the rejected light from the VersaChrome filter at a 45 degree angle and then combining the two beams on the output side of the VF-5. If this configuration is desired, it requires an additional custom light guide and SmartShutter® system.
The Lambda VF-10 - The Lambda VF-10 was originally purpose-built for use with white light supercontinuum lasers. The special sized Versachrome filters are 8 mm x 16 mm making them ideally sized for use with a laser beam. The VF-10 also includes an uncoated glass substrate, identical to the Versachrome filter, which is mounted to an additional stepper motor near the output port of the instrument. This uncoated "filter" changes angle simultaneously with the Versachrome filter and compensates for the laser beam displacement that takes place natively when the filter changes angle for wavelength selection.
Features:- Now supported by the Lambda 10-3 with special programming
- Patented white light output capability
- Wavelength range as wide as 338-900 nm
- 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)