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