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