| 摘要 |
PURPOSE: To avoid parallel phenomenon with a projected optical image with a lenticular lens which is useful for a reflection lamp and which has multiple polygonal lenticules and to realize satisfactory light distribution. CONSTITUTION: The lenticules 12, 14, 16 and 18 are arranged in plural coaxial areas A, B, C and D around an optical center 19. The sizes and the light distribution capacity of the lenticules 12, 14, 16 and 18 in the respective areas A-D are selected to provide desired optical distribution. For avoiding parallel phenomenon, the lenticules 12, 14, 16 and 18 are arranged in plural wedge-shaped sections 71-72 which are arranged in a circumferential direction in a circle around the optical center 19 of the lens and which cross the plural areas. The lenticules of the respective sections are arranged in the uniform and close arrangement of parallel linles. One longitudinal direction axis in plural lines is arranged in the direction of a radius on the optical center of the lens and any sides of the lenticules are prevented from becoming parallel to a light source image projected by a reflector.
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