Six-color solid state illuminator for cinema projector

Junejei Huang; Yuchang Wang

doi:10.1117/12.2060060

25 September 2014 Six-color solid state illuminator for cinema projector

Junejei Huang, Yuchang Wang

Proceedings Volume 9192, Current Developments in Lens Design and Optical Engineering XV; 91920W (2014) https://doi.org/10.1117/12.2060060
Event: SPIE Optical Engineering + Applications, 2014, San Diego, California, United States

Abstract

Light source for cinema projector requires reliability, high brightness, good color and 3D for without silver screens. To meet these requirements, a laser-phosphor based solid state illuminator with 6 primary colors is proposed. The six primary colors are divided into two groups and include colors of R1, R2, G1, G2, B1 and B2. Colors of B1, B2 and R2 come from lasers of wavelengths 440 nm, 465 nm and 639 nm. Color of G1 comes from G-phosphor pumped by B2 laser. Colors of G2 and R1 come from Y-phosphor pumped by B1 laser. Two groups of colors are combined by a multiband filter and working by alternately switching B1 and B2 lasers. The combined two sequences of three colors are sent to the 3-chip cinema projector and synchronized with frame rate of 120Hz. In 2D mode, the resulting 6 primary colors provide a very wide color gamut. In 3D mode, two groups of red, green and blue primary colors provide two groups of images that received by left and right eyes.

Citation Download Citation

Junejei Huang and Yuchang Wang "Six-color solid state illuminator for cinema projector", Proc. SPIE 9192, Current Developments in Lens Design and Optical Engineering XV, 91920W (25 September 2014); https://doi.org/10.1117/12.2060060

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