rhomboidal
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- holographic gratings
- filters
- infra-red beam folower
- geometrical focus
- push out
- time-averaged shadow-moire method
- intensifying screen
- optical harmonic generation
- multilongitudianl-mode laser
- optical deformation
- visible emissivity
- metacrystalline
- upper state relaxation
- Varotal lens
- astrospectrograph camera
- optical head controllers,control ics/modules
- mode pattern
- chronophotography
- diatomic roto
- frequency summing