| 摘要 |
PURPOSE:To extinguish easily and effectively a shadow generated in a surface by providing an annular optical member with a plane type image-formation optical part on the side opposite to a light source with a light shielding body between. CONSTITUTION:When a lamp 10 is turned on, the majority of its light is transmitted through a ring 8 and a lens body 5, then reflected by a reflecting film 3, raising the surface of a dial 9 brightly. On the other hand, the part shielded by a hand spindle 11 forms a shadow extending to the rear and its outermost edge is refracted by the front surface of the lens body 5 to be led to the rear surface, where it is refracted to reach an auxiliary image-forming lens 6 and refracted by its front surface to form an image on the rear end surface of a lens 7, extinguishing the shadow of the hand spindle 11 at this part. |
