| 摘要 |
PROBLEM TO BE SOLVED: To provide a luminaire that includes a filter cover for illumination capable of preventing occurrence of a heat crack due to an environmental temperature and peeling or deterioration of a coating with the heat crack, and capable of enduring heat shock occurring in coating processing for blue wavelength light cut.SOLUTION: A luminaire includes a light source 3 having an LED element 2, and a filter cover 4 for illumination covering the light source 3. The filter cover 4 for illumination is constituted by forming a spherical lens or aspherical lens 5 made of a heatproof glass material subjected to blue wavelength light cut coating for reducing a blue light-emitting component with a wavelength of 470 nm or less emitted from the light source 3.SELECTED DRAWING: Figure 3 |
