| 摘要 |
PURPOSE:To make lens cut parts stereoscopic for more marketability by giving lens cut to the surface of a complex lens with a light distribution controller formed at an approximately uniform thickness in respect to a paraboloid of revolution so that the complex lens can be used as a light distribution control means. CONSTITUTION:A complex lens 3 formed of non-colored resin material has the back side formed as a paraboloid of revolution 31 with a proper focal distance so that, when it is fitted in place on a housing 5 mounted with a light source 2, the paraboloid of revolution 31 may have a focal point on the light source 2. In addition, a reflecting plane 4 is closely formed on the paraboloid of revolution 31 with vacuum deposition Al. In this way, the reflecting plane 4 is also formed as a paraboloid of revolution with a focal point on the light source 2 so that light from the light source 2 is converged in parallel and reflected to the illuminating direction. At this time, the lens 3 which has the surface formed at an approximately uniform thickness in respect to the paraboloid of revolution 31 is given lens cut 32 into a fish-eye shape so that light can transmit the cut 32, again. |
