Range measurement for active optical recognition devices
Ratiometric edge detector system
Ratiometric transparency meter
Reader for graph curve lines and like
Real scene imaging system pupil phasing method and apparatus
Real-scene dispersion sensor detecting two wavelengths and deter
Real-time wavefront sensor for coherent wavefront characterizati
Receiving apparatus, transmitting apparatus, and...
Reducing phase fluctuations in a coherent radiation beam using f
Redundant light source circuit
Reflection type photoelectric switch
Reflective surface for solar energy collector
Refraction correction for axisymmetric viewing window
Register mark detection
Register mark detection apparatus utilizing a first and second l
Registration mark detector
Registration method for screen printing and apparatus including
Registration system for a moving substrate
Remote controllable laser projection apparatus
Remote optical display designator