| 摘要 |
The present invention provides an optical element (or plastic molding) comprising an optically functional surface and a flange formed on the outer periphery thereof, and having on the flange outer peripheral surface a fitted portion inscribing on the inner peripheral surface of a lens-barrel and an adhering portion to be adhered to the lens-barrel by the adhesive filled in a concave groove of the lens-barrel, wherein a raised portion is formed on the flange surface inside the flange outer peripheral surface, whereby the adhesion area is enlarged, the adhesive capacity is increased, and a sufficient fitting area is secured, without the possibility of flow of the adhesive to the optically functional surface.
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