| 摘要 |
<p>A light-emitting device (100), comprising: a blue light laser light source (110) which emits a blue light laser (151); a wavelength conversion device (120) which comprises a wavelength conversion layer (121), the wavelength conversion layer (121) comprising a first conversion region, the first conversion region comprising a yellow light wavelength conversion material or/and a green light wavelength conversion material and being used for receiving the blue light laser (151) and partially converting same into a stimulated laser, so as to emit the stimulated laser and an unconverted blue light laser (152); a first filter (130) which is used for receiving the stimulated laser and the unconverted blue light laser (152) emitted by the first conversion region and respectively emitting a mixed laser (153) of the blue light laser and the partial stimulated laser and a remaining stimulated laser (154) in two directions as two paths of emergent light of the light-emitting device (100), so as to enable the colour coordinate of the mixed laser to be closer to that of a preset blue light. Also provided is a projection device which comprises the light-emitting device (100), thereby improving the colour coordinate of the blue light and utilizing the remaining stimulated laser.</p> |
