Semrock Launches Breakthrough Tunable Optical Filters

Semrock releases its new VersaChrome tunable bandpass filters. They offer wavelength tunability over a very wide range of wavelengths by adjusting the angle of incidence with essentially no change in spectral performance.

With a tuning range of greater than 12% of the normal-incidence wavelength, only five filters are needed to cover the full visible spectrum. Many optical systems can now benefit from tunable filters with the highly desirable spectral and two-dimensional imaging performance characteristics of thin-film interference filters combined with the center wavelength tuning speed and flexibility of a diffraction grating.

VersaChrome tunable filters guarantee an average transmission greater than 90%. The wavelength range of the filters ranges from 390 – 700 nm. Parts are available in 25.2 x 35.6 x 2.0 mm sizes and custom sizing.