Accession Number:

AD0839851

Title:

ADVANCED UNDERWATER OPTICAL VIEWING SYSTEMS.

Descriptive Note:

Status rept. Jun 65-Jan 68,

Corporate Author:

NAVAL UNDERSEA WARFARE CENTER PASADENA CA

Personal Author(s):

• Hodgson, Robert T.
• Heckman, Paul J., Jr

Report Date:

1968-06-01

Pagination or Media Count:

71.0

Abstract:

Conventional underwater optical viewing systems are limited by the scattering and absorption properties of the underwater medium. Backscatter, in particular, poses an immediate limitation to the maximum range of underwater visibility. Three underwater viewing systems designed to reduce the image-degradation effects of backscattered light have been investigated both experimentally and theoretically. The results of this investigation are presented and discussed. Recommendations are presented with regard to the viewing systems, to which further development effort should be applied. Author

Descriptors:

• *UNDERWATER EQUIPMENT)
• *LIGHT TRANSMISSION)
• (*OPTICAL EQUIPMENT
• (*UNDERWATER LIGHT
• VISIBILITY
• POLARIZATION
• RANGE GATING
• OPTICAL SCANNING
• BACKSCATTERING
• SEA WATER
• UNDERWATER PHOTOGRAPHY
• LASERS
• FIBER OPTICS
• FEASIBILITY STUDIES
• ABSORPTION

Subject Categories:

• Optical Detection and Detectors
• Fiber Optics and Integrated Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE