Enhanced white light for projection lighting
The invention provides a full color projection system ( 1000 ) comprising a lighting system ( 100 ) configured to provide first light ( 111 ) including blue light, second light ( 121 ) including one or more of green and yellow light, third light ( 131 ) including red light, wherein the first light ( 111 ), the second light ( 121 ), and the third light ( 131 ) include light having a wavelength of 430 nm or larger; a further light source ( 140 ) configured to provide further light source light ( 141 ) including one or more of UV light and short wavelength blue light having a wavelength of 420 nm or smaller, wherein the first light ( 111 ), second light ( 121 ), third light ( 131 ) and the further light source light ( 141 ) have mutually differing spectral power distributions; a spatial light modulator system ( 200 ) configured to receive the first light ( 111 ), the second light ( 121 ), the third light ( 131 ), and the further light source light ( 141 ), wherein the spatial light modulator system ( 200 ) is configured to provide a plurality of pixels ( 210 ) for providing projection system light ( 1001 ) with one or more of the first light ( 111 ), the second light ( 121 ), and the third light ( 131 ), and in one or more control modes the further light source light ( 141 ); and a control system ( 300 ) configured to control the lighting system ( 100 ), the further light source ( 140 ), and the spatial light modulator system ( 200 ), wherein during operation one or more pixels ( 210 ) are temporarily configured to provide white projection system light ( 1001 ), and wherein the projection system ( 1000 ) is configured to provide also the further light source light ( 141 ) via one or more of those one or more pixels ( 210 ).
1. A full color projection system comprising:
a lighting system configured to provide first light including blue light, second light including one or more of green and yellow light, third light including red light, wherein the first light, the second light, and the third light include light having a wavelength of 430 nm or larger;
a further light source configured to provide further light source light including one or more of UV light and short wavelength blue light having a wavelength of 420 nm or smaller, wherein the first light, second light, third light and the further light source light have mutually differing spectral power distributions;
a spatial light modulator system configured to receive the first light, the second light, the third light, and the further light source light, wherein the spatial light modulator system is configured to provide a plurality of pixels for providing projection system light with one or more of the first light, the second light, and the third light to create an image, and in one or more control modes the further light source light; and
a control system configured to control the lighting system, the further light source, and the spatial light modulator system;
wherein during operation one or more pixels are temporarily configured to provide white projection system light, and wherein the projection system is configured to provide also the further light source light only via one or more of those one or more pixels.
2. The projection system according to claim 1 , wherein the further light source is configured to provide further light source light having a wavelength of 400 nm or smaller.
3. The projection system according to claim 1 , wherein the projection system is configured to simultaneously provide the first light and the further light source light.
4. The projection system according to claim 1 , wherein during operation one or more pixels are temporarily configured to provide one or more of the first light, the second light, the third light, the projection system is configured to provide also the further light source light via one or more of those one or more pixels.
5. The projection system according to claim 4 , wherein the projection system is configured to provide also the further light source light via one or more of those one or more pixels only when during operation a predefined minimum number of pixels are temporarily configured to provide the white projection system light.
6. The projection system according to claim 4 , wherein the projection system is configured to provide also the further light source light via one or more of those one or more pixels only when during operation a predefined minimum number of pixels in a cluster of neighboring pixels are temporarily configured to provide the white projection system light.
7. The projection system according to claim 4 , wherein the projection system is configured to provide also the further light source light via one or more of those one or more pixels only when during operation the one or more pixels are temporarily configured to provide the white projection system light having a correlated color temperature of at least 3000 K.
8. The projection system according to claim 1 , wherein the projection system is configured to provide the further light source light simultaneously with at least one of the first light, the second light, and the third light, or wherein the projection system is configured to sequentially provide the first light, the second light, the third light, and the further light source light, to the spatial light modulator system.
9. The projection system according to claim 1 , wherein the lighting system comprises a first light source configured to provide first light including blue light, a second light source configured to provide second light including one or more of green and yellow light, a third light source configured to provide third light including red light, wherein the first light source, the second light source, the third light source, and the further light source are solid-state light sources.
10. The projection system according to claim 1 , wherein the spatial light modulator system is multi micro-mirrors based.
11. The projection system according to claim 1 , wherein the spatial light modulator system is multi-LCD based.
12. Use of projection system according to claim 1 for displaying a full-color image.
13. Use of projection system according to claim 1 for general lighting, especially for providing white projection system light having a color rendering index of at least 75.
14. A full color projection system comprising:
a lighting system configured to provide first light including blue light, second light including one or more of green and yellow light, third light including red light, wherein the first light, the second light, and the third light include light having a wavelength of 430 nm or larger;
a further light source configured to provide further light source light including one or more of UV light and short wavelength blue light having a wavelength of 420 nm or smaller, wherein the first light, second light, third light and the further light source light have mutually differing spectral power distributions;
a spatial light modulator system configured to receive the first light, the second light, the third light, and the further light source light, wherein the spatial light modulator system is configured to provide a plurality of pixels for providing projection system light with one or more of the first light, the second light, and the third light to create an image, and in one or more control modes the further light source light; and
a control system configured to control the lighting system, the further light source, and the spatial light modulator system;
wherein during operation one or more pixels are temporarily configured to provide white projection system light, and wherein the projection system is configured to provide also the further light source light only via one or more of those one or more pixels;
wherein the further light source is configured to provide further light source light having a wavelength in the range of 300-380 nm.
15. A method for projecting an image, the method comprising:
providing one or more of first light including blue light, second light including one or more of green and yellow light, third light including red light, wherein the first light, the second light, and the third light include light having a wavelength of 430 nm or larger;
using a projection system comprising a further light source configured to provide further light source light including one or more of UV light and short wavelength blue light having a wavelength of 420 nm or smaller, wherein the first light, second light, third light and the further light source light have mutually differing spectral power distributions;
irradiating with one or more of the first light, the second light, the third light, and the further light source light a spatial light modulator system comprised by the projection system, wherein the spatial light modulator system is configured to provide a plurality of pixels for providing projection system light with one or more of the first light, the second light, and the third light, and in one or more control modes the further light source light,
wherein during operation one or more pixels are temporarily configured to provide white projection system light, and wherein the projection system is configured to provide also the further light source light only via one or more of those one or more pixels.