| 摘要 |
PROBLEM TO BE SOLVED: To provide an optically coupled device and optical module including the optically coupled device that can appropriately and efficiently perform position measurement of an optical surface, and allow a product having superior overall efficiency to be stably manufactured at low cost. SOLUTION: An optically coupled device body 15 is formed having a shape that allows both first lens surface 5 and second lens surface 8 to be viewed simultaneously from a surface normal direction of at least one of a first surface portion 2a and a second surface portion 3a. COPYRIGHT: (C)2009,JPO&INPIT
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