| 摘要 |
PROBLEM TO BE SOLVED: To provide a semiconductor light-emitting device in which an adhesive agent which is inexpensive but is not excellent in light resistance and thermal resistance can be used for adhering a phosphor plate.SOLUTION: The semiconductor light-emitting device includes: a condenser lens 4 for condensing excitation light emitted from an excitation light source 3; a holder part 6 having a through hole 7 through which the condensed excitation light passes; a first transparent member 9 for converting the wavelength of the excitation light; and a second transparent member 8 positioned in the through hole 7. The through hole 7 has a small diameter part 7a, a middle diameter part 7c, and a large diameter part 7d. The diameter of the small diameter part 7a is smaller than that of the middle diameter part 7c, and the diameter of the middle diameter part 7c is smaller than that of the large diameter part 7d. The first transparent member 9 is adhered by an adhesive agent 13 on a holder 6a at the middle diameter part 7c on the side opposite to the excitation light source 3. The spherical second transparent member 8 is fitted between the small diameter part 7a and the middle diameter part 7c. The excitation light condensed by the condenser lens 4 and then diffused is incident on the first transparent member 9 after passing through the spherical second transparent member 8. |
