| 摘要 |
PROBLEM TO BE SOLVED: To provide a light tunnel structure and its manufacturing method which simultaneously improves requirements for size precision and the complicated manufacturing process of a conventional light tunnel structure, which prevents bonding strength from being affected by cracking of an adhesive, and which increases the yield and reliability of the product as well as reducing the cost of manufacturing. SOLUTION: The light tunnel structure 3 is characterized in that it includes a plurality of plates 31-34 connected to each other to form the light tunnel T by surrounding it with at least one gap G formed at each of the junctions, and that it includes an adhesive 35 that is filled within the gaps G at the junctions. COPYRIGHT: (C)2008,JPO&INPIT
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