| 摘要 |
PROBLEM TO BE SOLVED: To provide a hybrid lens which can be easily processed and molded, does not cause deformation due to heat of high-luminance light or a light source, even when exposed thereon for a long period of time, and which can maintain a fixed focus without causing focus deviation, besides, is free from yellowing, deformation, melting and deterioration, even when it is used for a long period of time, and which is light in weight and excellent in weather resistance and heat resistance. SOLUTION: In the hybrid lens 1, a first lens 2 molded of a silicone resin and a second lens 3 molded of an inorganic glass, an acrylic resin, a polycarbonate resin or a cycloolefin polymer resin overlap each other while having a common optical axis from a light source 5 to a body to be irradiated. COPYRIGHT: (C)2011,JPO&INPIT |
