beam attenuator

beam attenuator

[′bēm ə′ten·yə‚wād·ər]
(spectroscopy)
An attachment to the spectrophotometer that reduces reference to beam energy to accommodate undersized chemical samples.
References in periodicals archive ?
Continuous innovation and rising spending in military & defense industry for applications including night vision cameras, beam attenuators and range finding is expected to augment growth.
For these same reasons, we also employ ROCs as beam attenuators in the measurement system (2) for characterizing the response linearity of detectors used with high-power lasers.