Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1993-12-20
1996-10-29
Phan, James
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359202, 359216, 359900, 250236, G02B 2608
Patent
active
055702228
ABSTRACT:
An underwater viewing system includes a dry and wet end. Illumination energy is provided to the wet end where it is scanned and the resulting scanned illumination is directed to a scene of interest. Energy reflected from the scene is received by the wet end where it retraces the path of illumination to the dry end. The received energy is directed to a detector and ultimately to a video processor. The wet end may be disposed in a remote piloted vehicle with optical waveguide payed out from the dry end to supply the illumination and to conduct the received energy. Communication information may be transferred between the dry and wet end may be over the same path followed by the illumination energy but at a different frequency. The illumination and communication energy may be separated based on their frequency. A polarization device may be provided for maximizing the amount of received energy that is provided to the detector.
REFERENCES:
patent: 3448458 (1969-06-01), Carlson et al.
patent: 4314154 (1982-02-01), Minoura et al.
patent: 4318582 (1982-03-01), Minoura et al.
Checkovich Paul
Lockheed Martin Corporation
Phan James
Young Stephen A.
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