POLARIZED LIGHT SOURCE AND POLARIZATION CONVERTING METHOD AND DEVICE THEREOF

摘要

A polarized light source comprises a light emitting source and a polarization conversion device. The polarization conversion device comprises a fixing device (107), and a transparent moving surface (104) aving motion state with respect to the fixing device (107) and provided with light wavelength inversion material (103). The polarization conversion device further comprises a stationary polarization beam splitter (101) close to the moving surface for transmitting a portion of excited light tom the light wavelength conversion material (103) to provide a polarized emitted light and reflecting he other portion back to the light wavelength conversion material (103). A filter (102) for reflecting the excited light and transmitting the light from the light emitting source can be disposed at the side of the moving surface opposite to the polarization beam splitter (101).