Projection device and associated display device

Details Projection device and associated display device Projection device and associated display device

H - Electricity

04

N

345/7

H04N 9/31 (2006.01) G02F 1/13357 (2006.01) H04N 3/12 (2006.01)

Patent

CA 1274613

ABSTRACT: Projection device and associated display device. Radiation from a radiation source (2) is con- verted into light of a desired spectral character by caus- ing the radiation from the source (2) to excite luminescent material (18) which is present between two interference filters (22, 23). In combination with opto-electronic elements monochrome pictures are obtained which are suitable for use in projection television. The sandwich of luminescent material (18) and interference filters (22, 23) may form part of a display device (3), for example an LCD, but it may alternatively be integrated, together with the radiat- ion source, to form a separate illumination source.

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