Optical Choppers and Lock in Amplifiers
Optical choppers are a mechanical method of repetitively
switching light beams on and off. They consist of a slotted
rotating disc through which the light beam passes producing
the chopping action.
Lockin amplifiers are instruments designed to recover signals
that are buried in noise. They require a reference signal
at the same frequency as the signal that is being measured
and then use this to demodulate the input signal before filtering.
Eyewear, Screens and Access Control Interlocks
Various styles and wavelength ranges for laser users and
for patients undergoing laser treatment. Please contact
us to discuss your requirements.