Dual scan optical pattern tracer

Details Dual scan optical pattern tracer Dual scan optical pattern tracer

1984-06-29

1986-11-25

Wan, Gene

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250234, 318577, G05B 100

Patent

active

046251049

ABSTRACT:
The present invention applies to a circular scanning optical pattern tracer of the non-steering type. The scanner includes the normal circular scanning mirror and sensor and in addition a further circular scanning mirror and sensor to produce a scan of greater diameter than the normal scan. The signal from the second scan is used to indicate rapid changes of direction of the pattern by gating the produced signal through a gate produced from the normal scan.

REFERENCES:
patent: 3727120 (1973-04-01), Jewell et al.

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