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美国韦斯汀豪斯电气公司研制了一种能在直径不到3英寸的干湿钻孔中操作的微型电视摄象机,在一些矿山使用都很成功。这种摄象机克服了以往同类型产品的主要缺点,如:有足够的清晰度时较笨重,集成内部光源效率
Westinghouse Electric Company of the United States has developed a miniature TV camera that can operate in dry and wet boreholes less than three inches in diameter and has been used successfully in some mines. This camera overcomes the main shortcomings of the same type of product in the past, such as: more clumsy enough clarity, integrated internal light source efficiency