OPTICAL LASER LIGHT RECEIVING DEVICE FOR DETECTING METHANE GAS

摘要

PURPOSE: A laser receiving device for detecting methane gas is provided to optimally condense laser reflected by the methane gas. CONSTITUTION: A first reflecting unit(200) condenses laser on a second reflection unit(300) by reversely reflecting measurement laser of a specific wavelength band irradiated by a laser module(100). The second reflecting unit faces the first reflecting unit between a laser module and the first reflecting unit. The second reflection unit reflects the reflected laser from the first reflecting unit to a refraction optical unit(400) for condensing. The refraction optical unit condenses reflected laser from the second reflection unit on a signal converter(500).