LASER PROJECTOR AND DEVICE FOR SHAPING LASER BEAM OF VISIBLE-SPECTRUM BLUE REGION FOR LASER PROJECTOR Russian patent published in 2005 - IPC

FIELD: projection of color images on screen.

SUBSTANCE: proposed laser projector designed for projecting color images on screen has first laser cavity incorporating active medium in the form of organic dye for shaping laser beam of visible-spectrum blue region, second laser cavity incorporating active medium in the form of organic dye for shaping laser beam of visible-spectrum green region, third laser cavity incorporating active medium in the form of organic dye for shaping laser beam of visible-spectrum red region, optical pumping source for shaping pumping beams and feeding them to mentioned active media of first, second and third laser cavities, respectively, that incorporates Nd-element laser, and means for projecting mentioned laser cavity shaped beams on screen. Nd-element laser is designed for generating beams of wavelength about 1.32 μm in order to extend service life of organic dye used for shaping blue-region laser beam; optical pumping source has mentioned-beam third harmonic shaper for feeding mentioned third harmonic as pumping beam to active medium of first laser cavity.

EFFECT: enhanced service life of device for shaping laser beam of visible-spectrum blue region.

9 cl, 4 dwg