| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an illumination device which can reduce the density of just emitted laser light to maintain desired safety even when an optical conversion member deviates. <P>SOLUTION: An illumination device 1 comprises: a light source 10 that emits excitation light; a wavelength conversion member 30 that is disposed adjacent or neighboring the light source 10 forward the light source 10 and on the optical axis 11 of the light source 10 with respect to the emission direction of the excitation light and in which the wavelength of the excitation light is desirably converted by being irradiated with the excitation light to emit light having a peak wavelength different from that of the excitation light; and a density reduction part 50 that intervenes adjacent or neighboring the light source 10 forward the light source 10 and on the optical axis 11 of the light source 10 when the wavelength conversion member 30 deviates from the optical axis 11 of the light source 10 and reduces the density of the excitation light just emitted from the light source 10. <P>COPYRIGHT: (C)2012,JPO&INPIT |
