The invention discloses an optics system for optics readout equipment. The optics system has a six-side polarizing beam splitter positioned between a grating and a collimating lens and substituting the ordinary parallelogram prism. The polarizing beam splitter reflects optics data from an optical disc. The collimating lens of the system at the same time plays a role of ordinary collimating lens and ordinary first return lens. A Wollaston prism is positioned between the second return lens and a light detector and is used to incline to assemble the light from the return lens. In this way, the optics reduces the number of optics elements, is easy for the accurate settings of optics elements and realizes the trend of present optics readout equipment of light weight and compact structure. |