| 摘要 |
An underwater illumination device comprises a base with a plug for a power source. A lamp on the base is enveloped by a tubular, transparent sleeve, with a cap at its outer end. A flux control reflector within the sleeve has a base and side plates, each provided with fluted surfaces serving to concentrate the light flux from the bulb and to direct the flux such that it flows to the outer edges of the beam to thereby more evenly illuminate an underwater object.
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