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The Proceedings of the 1st International Conference on Industrial Application Engineering 2013
Light curtain systems are used to detect intruders in various cases and places. However, it is necessary to adjust the position of the light detecting element accurately in order to receive the irradiating laser light. We propose a new type safety light curtain system that uses a hemispherical mirror and an LED in this research. A hemispherical mirror can reflect irradiating light rays surroundings of 180° in the vertical direction and 360° in the horizontal direction  . When an LED is at adoi:10.12792/iciae2013.041 fatcat:3xk6szvxe5bcjkrb5pt44xkinq