A METHOD FOR LASER PROJECTION OF IMAGES AND A LASER PROJECTOR

摘要

A method for the laser projection of images includes the supply of optical pump radiation to the active element of the laser in order to generate laser radiation, the spatial modulation of the laser radiation intensity by the image being projected, and the projection of spatially modulated laser radiation on the screen. In order to improve the laser projector efficiency and the brightness of the image being projected, at a sufficiently low "black level", the spatial modulation of the laser radiation intensity is carried out by means of spatial modulation of the power of optical pump radiation being supplied on an active element of the laser. The laser projector for projecting images contains an optical pump source (1) for the pump radiation generation, a spatial light modulator (6), and a laser resonator (2) including a spectral selective element (3) for the input of pump radiation inside the resonator, an active element (5) located inside the laser resonator and means for the output of laser radiation from the resonator being generated therein. The spatial light modulator (6) is located outside the laser resonator (2) between the optical pump source (1) an the spectral selective element (3) of the laser resonator (2) and is optically conjugated with the active element (5) located inside the laser resonator (2).