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Two-colour lamp for rear truck of railway train has white diodes on a level with focal zones of condenser Fresnel prisms and adjacent red diodes
Two-colour lamp for rear truck of railway train has white diodes on a level with focal zones of condenser Fresnel prisms and adjacent red diodes
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机译:铁路后车用的两色灯在与聚光菲涅尔棱镜和相邻的红色二极管的聚焦区齐平的白色二极管上
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摘要
The lamp, comprising a condenser (1) with Fresnel prisms (10 - 18) and a printed circuit board (2) with white (3) and red (4) diodes to illuminate the condenser, has the white diodes positioned on a level with the prism focus zones (F0 - F8), and the red ones adjacent to them and offset a short distance away from the focal zones. The condenser has a central prism (10) surrounded by eight outer prisms (11 - 18) in pairs: two at the top, two at the bottom and two on each side.
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