A module of laser-phosphor based light source, wherein phosphor light pumped by laser is combined with blue laser light to form white light, is used as light source for 3-chip projectors. Arrays of blue laser diodes are concentrated and aligned by stripes of mirrors and formed into a laser bank. Laser lights of 445nm and 460 nm from two directions and two half apertures are guided and converged into either red or green phosphors. Red and green lights emerge from two spots of phosphors are collimated into two directions and reflected into one direction by two dichroic plates. Two dichroic plates also reflect two directions of 445nm and 460 nm residual blue laser lights into one direction. The combined red, blue and green lights are guided into one direction and can be used as input light source for 3-chip projector.

Date Published: 25 September 2013
PDF: 6 pages
Proc. SPIE 8841, Current Developments in Lens Design and Optical Engineering XIV, 884105 (25 September 2013); doi: 10.1117/12.2022716

Published in SPIE Proceedings Vol. 8841:
Current Developments in Lens Design and Optical Engineering XIV
R. Barry Johnson; Virendra N. Mahajan; Simon Thibault, Editor(s)