| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique that allows for holding a plurality of lenses with precision without being affected by flashes left on molded lenses and without using adhesive.SOLUTION: A lens unit comprises; a first lens L1; a second lens 2 having a front-side portion of an outer periphery fittingly held in an optical axis direction by a cylindrical fit-holding portion 1a provided on a rear-side surface of the first lens 1; and a lens holder 3 located on the rear side of the second lens 2 and having a holding recess 3a for holding a rear-side portion of the outer periphery of the second lens 2, as well as a fitting hole 3f to which a rear-side portion of an outer periphery of the first lens 1 is fitted and secured. A gap 3e is provided between an inner periphery 3c of the holding recess 3a and the outer periphery of the second lens 2, and the second lens 2 has flashes 2b, created by molding, that protrude radially outward from the outer periphery thereof and are accommodated in the gap 3e.SELECTED DRAWING: Figure 5 |
