Laser photography pulse synchronization circuit
A laser keep alive triggering control apparatus for initiating the generation of laser output pulses, maintaining laser operation temperatures, and slaving the occurrence of laser output pulses to a variable speed mechanical apparatus is described comprising: a pulse triggered laser; first pulse sourcing means including a free-running electronic oscillator circuit received therein, second pulse sourcing means including a signal pickup transducer responsive to predetermined movement events of the variable speed mechanical apparatus for generating second electrical pulses also capable of triggering bursts of optical energy from the laser; electronic switching means responsive to a predetermined rate of the second pulse sourcing means for selecting one or the other of the first sourcing means and second sourcing means electrical pulses of the laser; and means for inhibiting premature first and second pulses and resultant short cycle triggering of the laser, following first pulse to second pulse and second pulse to first pulse triggering changes in the switching means.
- Assignee:
- Secretary of the Air Force, Washington, DC
- Patent Number(s):
- US 4745608
- OSTI ID:
- 7001955
- Resource Relation:
- Patent File Date: Filed date 27 Jun 1986
- Country of Publication:
- United States
- Language:
- English
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