| 摘要 |
A vehicle light (300, 400, 500, 600, 700, 800) and a road illumination device are provided, that utilize a semiconductor light emitting device (100, 200, 300) capable of forming a luminance distribution where the light with a maximum value can be arranged at or near the cutoff line, thereby improving its light utilization efficiency. The vehicle light (300, 400, 500, 600, 700, 800) can include: a semiconductor light emitting device (100, 200, 300) including a semiconductor light emitting element (102, 220, 320) and a wavelength conversion layer (103, 240, 340) having a thickness-decreased portion (244, 344) that is formed from or from around a center line (L3) of the semiconductor light emitting element (102, 220, 320) to one end thereof so that the thickness is reduced from or from around the center portion toward the one end; and a projection optical system (410, 510, 610, 710, 720, 730, 810, 820) for forming a cutoff line including at least one of a horizontal cutoff line and an oblique cutoff line in a light distribution, by projecting a plurality of light source images (P1) each including an image portion (P1') corresponding to the thickness-decreased portion (244, 344) at its upper area, and arranging the image portions (P1') in at least one of a horizontal direction and an oblique direction. |
