Optics reflect meter

The utility model discloses an optics reflect meter, the device include pyramid speculum and sealed safety cover, the preceding terminal surface of sealed safety cover is glass window, and the outside intermediate position of sealed safety cover is equipped with the snap ring, the pyramid speculum sets up inside sealed safety cover, and the front end of pyramid speculum is fixed on the snap ring, and the awl point of its pyramid is fixed on sealed safety cover through the fastening pipe. The low -voltage line phase sequence signboard is advantageous in that, the utility model discloses with pyramid speculum coating film, the intervene problem that traditional pyramid prism arouses has been solved owing to light path multiple reflection, crossed and superposed, secondarily, the utility model discloses a sealed safety cover protection speculum, solved the pyramid speculum at high temperature, high dust, corrode under the operating mode reflectance coating and is leaded to the problem that drops by oxidative cor