general/optical-components
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Optical isolator
Optical component allowing the transmission of light in only one direction
Gires–Tournois etalon
Optical interferometer
Star diagonal
Angled mirror or prism used in telescopes
Polarizer
Optical filter device
Retroreflector
Device to reflect radiation back to its source
Waveguide (optics)
Physical structure guiding light waves
Spatial light modulator
Optical device
Optical circulator
Optical device in which light entering any port exits from the next