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