| 摘要 |
PROBLEM TO BE SOLVED: To prevent degradation in optical performance of an optical unit due to the presence of foreign substances such as bubbles and dust caused by an adhesive in an optical path, and to join two optical members of the optical unit with high accuracy even when joining surfaces of the two optical members are curved surfaces.SOLUTION: A lens unit 1 as an optical unit includes at least two optical members, which are a first lens 11 and a second lens 12. The first lens 11 and the second lens 12 are joined with an adhesive sheet 13. The adhesive sheet 13 is in a sheet form having a stretching and contracting property. |
