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Home › Retro-reflectometer for measuring retro-reflectivity of objects in an outdoor environment comprising a lock-in amplifier coupled to an optical modulator and an optical detector

Retro-reflectometer for measuring retro-reflectivity of objects in an outdoor environment comprising a lock-in amplifier coupled to an optical modulator and an optical detector

US Patent 11474037 · Granted Oct 18, 2022

Estimated economic value: $56,365,000 ⓘ

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