collimator
/ˈkɑlɪmeɪtər/
noun
- A device that produces a narrow, parallel beam of light or other radiation.
- The collimator in the X-ray machine ensures the radiation is directed precisely.
- The scientist adjusted the collimator to focus the laser beam.
- In astronomy, a collimator helps align the telescope's optics.
- A device used to align or sight a gun, telescope, or other instrument.
- He attached a collimator to his camera for better framing.
- The soldier used a collimator to zero in the rifle scope.
- The surveyor's collimator helped measure angles accurately.