Sensor array tracking and detection system having an alignment p

Details Sensor array tracking and detection system having an alignment p Sensor array tracking and detection system having an alignment p

1997-04-30

1998-06-23

Le, Que

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

2502061, 35613904, G01J 120

Patent

active

057708509

ABSTRACT:
A system is provided for tracking a free-space optical communications beam. The incoming beam is split by a beam splitter. One portion of the incoming beam is focused onto a high-speed photodetector. Another portion of the incoming beam is passed through a target pattern optical element. A resulting target pattern is formed on a two-dimensional active pixel sensor array. The alignment of the system can be adjusted based on the position of the target pattern on the sensor array.

REFERENCES:
patent: 5559322 (1996-09-01), Jacoby et al.

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