| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing an optical element block by which high positioning accuracy for the formation of a lens is obtained and a uniform protective film can be formed. SOLUTION: When a lens is formed by using a casting case 30, first a lens resin having light transmitting property such as an epoxy resin is injected into a circular hole 31, and a cylindrical optical element mount having an optical element mounted on its top face is inserted into the hole 31. While a protrusion 35 formed on the inner surface of the hole 31 is made in contact with the side circumference face of the optical element mount for positioning the optical element implementation table and the casting case 30, the lens resin is heated to the curing temperature of the resin to be cured. Then by releasing the optical element implementation table from the casting case 30, a lens is formed on the top end face of the optical element mount as well as a protective film comprising the lens resin is formed on the top end face and the side circumference face of the optical element implementation table to protect a circuit pattern formed on the top end face and on the side circumference face. COPYRIGHT: (C)2004,JPO&NCIPI
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