StellarNet has announced a new, miniature deuterium/tungsten light source, the SL4-DT, covering the 200-1700nm range in a single unit
The SL4-DT has a high output power which enables its use for reflectance measurements, where lower power light sources (like SL5-DH) are too weak.
A shutter button on the front panel blocks light output of both lamps, necessary for dark reference spectrums without turning off the source.
Additional filters and optics allow the D-alpha line (654nm) to be eliminated in the deuterium source.
The small size (72 x 40 x 90mm) makes it a perfect match for StellarNet miniature UV-vis spectrometers and also reduces complexity allowing it to be connected to a battery pack for field applications.