| 摘要 |
A resin-molded automotive lens, and a method for producing same, in which sink marks are prevented from being formed in a thin lens surface portion of the lens. In a resin-molded lens having a thin lens surface portion and a thick portion such as a seal leg portion or boss portions formed integrally with at least a part of this lens surface portion, the lens surface portion and the thick portion are formed in separate injections. That is, the thick portion is molded with resin integrally with another lens surface portion in advance, and thereafter the thin lens surface portion is molded with resin integrally with this thick portion, so that in this portion it is possible to reduce the influence of cooling of the resin when the lens surface portion is molded to thereby prevent sink marks from being formed in the lens surface portion. |
