| 摘要 |
PROBLEM TO BE SOLVED: To provide a lens unit in which a plurality of lenses can be securely adhesively fixed to a mirror frame without causing positional deviation, decentering or the like and also cost can be reduced.SOLUTION: A lens unit LU comprises at least two lenses 4 and 5 adjacently to each other in an optical axis direction held in a mirror frame 1. The lens unit LU includes: projection parts 2c and 2d for positioning which are formed so as to project from an inner surface of the mirror frame 1 respectively in at least three places separated in the circumferential direction of the mirror frame 1 and to position the lenses with respect to the mirror frame 1 by contacting peripheral surfaces of the lenses; an adhesive filling space GSP1 formed between the respective peripheral surfaces of the two lenses 4 and 5 and the inner surface of the mirror frame 1 across the two lenses 4 and 5; and an adhesive injection hole 1c formed on the mirror frame 1 while communicating the adhesive filling space GSP1. |
