Image pickup lens unit and manufacturing method thereof

摘要

A small, high-performance image pickup lens unit having an IR cut filter that can be incorporated reliably therein while avoiding an increase in processing complexity. A sealing portion 14 is disposed between a lens 11 and an IR cut filter 12 in order to seal an internal space IS sandwiched between the lens 11 and the IR cut filter 12, and therefore a holder 40 can be molded integrally with the lens 11 and the IR cut filter 12 incorporated therein while preventing liquid resin MP from flowing in between the lens 11 and the IR cut filter 12. By molding the holder 40 integrally with the lens 11 and the IR cut filter 12 incorporated therein in this manner, an image pickup lens unit 100 can be reduced in size, and reductions in the number of components and the number of assembly man-hours can be achieved.

主权项

1. A manufacturing method for an image pickup lens unit including a lens, a filter, and a holder that holds the lens and the filter in an interior thereof, the manufacturing method comprising the steps of:
attaching the lens to a first mold so as to be positioned on the first mold which is in an open condition; attaching the filter to a second mold so as to be positioned on the second mold which is in an open condition; closing the first and second mold to form an internal space sandwiched between the lens and the filter and a molding space on a periphery of the lens and the filter; and molding a holder member that holds the lens and the filter in an interior thereof by charging a resin into the molding space and hardening the resin.