A STEERING FLUID SYSTEM OF WHEEL ROADER

摘要

A mirror having a center wavelength of 1024nm and a resonator of a second harmonic wave generator is provided. Optical thin film wherein ZrO2 and SiO2 are alternately deposited by 27 layers on transparent substrates of an input mirror and an output mirror. The thin film has a refractive ratio of 2.1 about a light of 550nm. The input mirror and the output mirror have a reflection ratio of 99.9% about a basic wave of 1064nm, and has a transmission ratio of 97% about an input laser of 809nm and a harmonic wave of 532nm, thereby generating a second harmonic wave with a very good efficiency.