ILLUMINATION DEVICE AND PROJECTOR

WIPO Patent Application WO/2011/162321

A1

The principal rays of the light flux emitted by a composite light source (ST) equipped with three light-emitting units (LED1-LED3) respectively emitting red light flux, green light flux or blue light flux having different wavelengths towards the same side is made to pass through first condensing optical systems (L1-L3) and is then made to enter a reflective liquid crystal display element (LC), which is a spatial light-modulating element, via a composite mirror obtained by arranging a first mirror (M1), which is a dichroic mirror that reflects red light flux but transmits green and blue light flux, a second mirror (M2), which is a dichroic mirror that reflects green light flux that has passed through the first mirror (M1) but transmits blue light flux, and a third mirror (M3), which reflects the blue light flux that has passed through the second mirror (M2), in a manner such that the mirrors have an angular difference. This configuration provides an illumination device that is smaller than conventional illumination devices, and a projector using the illumination device.

SAWAI Yasumasa (Inc. 2970, Ishikawa-machi, Hachioji-sh, Tokyo 05, 〒1928505, JP)
澤井靖昌 (〒05 東京都八王子市石川町２９７０番地　コニカミノルタオプト株式会社内 Tokyo, 〒1928505, JP)

JP2011/064351

December 29, 2011

June 23, 2011

Click for automatic bibliography generation  

Konica Minolta Opto, Inc. (2970, Ishikawa-machi Hachioji-sh, Tokyo 05, 〒1928505, JP)
コニカミノルタオプト株式会社 (〒05 東京都八王子市石川町２９７０番地 Tokyo, 〒1928505, JP)
SAWAI Yasumasa (Inc. 2970, Ishikawa-machi, Hachioji-sh, Tokyo 05, 〒1928505, JP)

F21S2/00; F21V8/00; G03B21/14; F21Y101/02

TAMURA Keijiro et al. (8th Floor, Masumoto Bldg. 4-3, Nishi-Shinjuku 7-chome, Shinjuku-k, Tokyo 23, 〒1600023, JP)

View/Download PDF      PDF Help

Previous Patent: COMBINATION OF EGCG OR METHYLATED EGCG AND A PDE INHIBITOR

Next Patent: CONDUCTIVE FILM, TOUCH PANEL, AND SOLAR CELL