Light source for projectors
The integration of a red, green, and blue laser light source with a diffusion and phosphor layer in projectors addresses the narrow color gamut and poor reproducibility issue, achieving enhanced color gamut and reduced speckle noise in projected images.
JP2026111099APending Publication Date: 2026-07-03JVC KENWOOD CORP
Patent Information
- Application Number
- JP2024226272
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2026-07-03
Smart Images
Figure 2026111099000001_ABST
Abstract
This invention provides a light source for projectors that can broaden the color gamut of projected images and improve color reproduction. [Solution] The optical element 7 has a diffusion layer 72, a wavelength separation layer 73, and a phosphor layer 74 formed in this order in the thickness direction on a base member 71. The diffusion layer 72 diffuses and reflects the red laser light R and the green laser light G. The wavelength separation layer 73 transmits a portion of the blue laser light B and reflects the other portion, reflecting the red laser light R and the green laser light G. The phosphor layer 74 is excited by the blue laser light B that has passed through the wavelength separation layer 73 and emits yellow light Y. The focusing element 5 mixes the red laser light R, green laser light G, blue laser light B, and yellow light Y emitted from the optical element 7 and emits them as white light W.
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Citation Information
Patent Citations
Light source device
JP2021033034A
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WO2015019555A1