OPTICAL ELEMENT UNIT

摘要

PROBLEM TO BE SOLVED: To provide an optical element unit such that a mark formed on a lower lens can be viewed even while a plurality optical elements are combined one over another.

SOLUTION: The optical element unit 10 is constituted by combining one over the other a plurality of optical elements 20 and 30 which are molded by injecting molten resin into metal mold cavities and has marks 40 and 50 showing with which of a plurality of metal mold cavities the optical elements are molded. At least part of an area A2 other than an optical surface on both top and reverse surfaces of the top optical element is made smooth so that the mark of the optical element arranged below the top optical element can be viewed from the top surface side of the optical element arranged at the top.

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