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