Below is a list of GPL Principals:
Optical spectroscopy components, systems, opto-mechanical components, breadboards and optical tables.
Hyperspectral spectrographs and imaging systems for research, process monitoring, quality control and remote sensing.
Electro-optical sensors, cameras and imaging systems that permit highly sensitive detection of photons in the visible and short wave infrared
Hand Held and Benchtop Raman Spectrometers
CCD / ICCD / EMCCD Scientific Cameras and spectrographs
Light Measurement Solutions
Below is a list of GPL Distributors: