Novel polarizing beam splitter

The utility model relates to a novel polarizing beam-splitting sheet, comprising a glass substrate sheet, a polarizing beam-splitting film plated on one side surface of the glass substrate sheet, and a reflecting film plated on the other side surface of the glass substrate sheet. The polarization beam splitting film is formed by stacking 40 layers of films; the reflecting film is formed by sequentially and alternately stacking TiO2 layers and SiO2 layers from inside to outside, the total number of the TiO2 layers is 11, and the total number of the SiO2 layers is 10. According to the polarizing beam splitter, a beam splitting film is plated on one side face of a glass substrate, a reflecting film is plated on the other side face of the glass substrate, light with the wavelength of 532 nm (+/-5 nm) enters from the polarizing beam splitting film, the incident angle is 45 degrees, the incident light is divided into S light reflected by the polarizing beam splitting film and P light reflected by the reflecting fil