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公开(公告)号:US4097733A
公开(公告)日:1978-06-27
申请号:US728073
申请日:1976-09-30
CPC分类号: G01V8/22 , E05F15/74 , E05Y2900/132
摘要: A door securing light barrier with a plurality of optically active devices, between which the light barrier beam extends through at least part of the door opening and whereof one emits an electrical signal when the light barrier beam is broken, the angle of the light beam of the light beam emitting device being adjustable relative to a fixed casing.
摘要翻译: 一种用多个光学有源装置固定光栅的门,光屏障光束在其间至少部分门开口延伸,并且当光屏障光束断开时发射电信号,其中光束的角度 光束发射装置相对于固定壳体是可调节的。