collimator
Parallel light producer
A collimator is a device that produces parallel rays of light or other radiation, or one that narrows a beam to a specific direction.
In optics, collimators align light for telescopes, lasers, and surveying instruments.
In medical imaging and radiation therapy, collimators shape X-ray or gamma-ray beams to target specific areas: The technician adjusted the collimator to focus the beam on the tumor.
Light-focusing curved glass
- apertureAdjustable optical inlet
- diaphragmMuscle separating chest, abdomen
- prismLight-splitting optical element
- diffractionWaves spreading past obstacles
refraction · grating · reticle · slit · pinhole · filter · polarizer · light
Structural support member
- gammaGreek alphabet's third
- X-rayPenetrating diagnostic beam
- particleMinute piece of matter
- neutronUncharged nuclear particle
photon · radiotherapy · oncology · dosimetry · shielding · isocenter · tumor · irradiation
Measures electromagnetic radiation properties
- interferometerInstrument measuring wave interference
- detectorDevice that senses
- sensorInput-detecting device
- theodolitePrecision angle-measuring instrument
photometer · rangefinder · sight · surveying · fiber-optic · endoscope · radiometer · SPECT
Adjusting for measurement accuracy
- adjustmentAlteration to improve fit
- parallelEquidistant at all points
- convergenceProcess of approaching sameness
- levelingMaking flat or equal
orientation · reference · accuracy · angular · deviation · straightness · perpendicularity · measurement
Degree of correctness
- toleranceWillingness to accept difference
- micrometerMillionth of a meter
- calibrationAdjusting for measurement accuracy
- measurementDetermining size or amount
fine-tuning · stability · repeatability · metrology · resolution · parallelism · specification · testing
Instrument magnifying faraway objects
- spectrographWavelength-separating recording instrument
- observatoryFacility for celestial study
- guiderOne who directs others
- celestialOf the sky above
spectroscopy · Newtonian · night-sky · stellar · sidereal
lens
Light-focusing curved glass
- apertureAdjustable optical inlet
- diaphragmMuscle separating chest, abdomen
- prismLight-splitting optical element
diffraction · refraction · grating · reticle · slit · pinhole · filter · polarizer · light · coherence
beam
Structural support member
neutron · photon · radiotherapy · oncology · dosimetry · shielding · isocenter · tumor · irradiation · brachytherapy
spectrometer
Measures electromagnetic radiation properties
- interferometerInstrument measuring wave interference
- detectorDevice that senses
- sensorInput-detecting device
theodolite · photometer · rangefinder · sight · surveying · fiber-optic · endoscope · radiometer · SPECT · imaging
calibration
Adjusting for measurement accuracy
- adjustmentAlteration to improve fit
- parallelEquidistant at all points
- convergenceProcess of approaching sameness
leveling · orientation · reference · accuracy · angular · deviation · straightness · perpendicularity · measurement · tolerance
accuracy
Degree of correctness
- toleranceWillingness to accept difference
- micrometerMillionth of a meter
- calibrationAdjusting for measurement accuracy
measurement · fine-tuning · stability · repeatability · metrology · resolution · parallelism · specification · testing · verification
telescope
Instrument magnifying faraway objects
- spectrographWavelength-separating recording instrument
- observatoryFacility for celestial study
- guiderOne who directs others
celestial · spectroscopy · Newtonian · night-sky · stellar · sidereal
collimatordiffuser
Device that scatters evenly
diverger · scatterer · disperser · spreader · concave lens
collimatorfocusing lens
Glass that concentrates light
concentrator · collector · lens · prism