| 摘要 |
PURPOSE:To prevent pseudo-lighting by forming a shade part on a front face lens surface. CONSTITUTION:A band-shaped translucent part 48 and shade part 42 extending laterally are formed in a vertical direction, on the surface of a front face lens 40, while a convex lens device for which convex lens devices 50 having an optical axis parallel to the irradiation axis of a lighting tool, are continued laterally, is formed counter to the translucent part 48, on the rear surface of the front face lens 40. A flat surface 52 is further formed counter to the shade part 42, between the convex lens element line adjacent in a vertical direction. The outside light that runs in the lighting tool is reflected in the lighting tool, and is injected into the front face lens 40, however, the escape of the light is hindered by the shade part 42, whereby pseudo-lighting is prevented. Since the number of the convex lens element 50 in a vertical direction is small, the ratio of the diffusion light in a vertical direction is small, and a desired pattern of light distribution can be facilitated. Pseudo-lighting can thus be prevented, while the desired pattern of light distribution can easily be obtained. |
