Alpha meter attachment for underwater optical systems

Optics: measuring and testing – Range or remote distance finding – With photodetection

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356208, G02B 500

Patent

active

039763692

ABSTRACT:
An improved viewing port for underwater oceanographic vehicle provides for establishing a standard length optical test path in the underwater environment with no modifications or additional passages through the hull of the vehicle.

REFERENCES:
patent: 3885162 (1975-05-01), Geertz
jenkins et al., Fundamentals of Optics, second ed., McGraw-Hill, p. 489, 0.

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