| 摘要 |
PURPOSE:To save labor for work to precisely form an abutting joint portion on a glass member so as to reduce the cost of a lens body by forming the abutting joint portion at the extended portion of a resin layer. CONSTITUTION:In a lens body 10, an aspheric surface-like resin layer 14 made up of ultraviolet setting resin is formed on a junction face 12a or the surface of a glass member having a concave surface. In this lens body 10, the abutting joint 10a of the lens body 10 is made up of a flat portion 14b and a circumferential face 14c. As the abutting joint 10a and the resin layer 14 are integrally formed, it is possible for the abutting joint 10a to be formed concurrently when the aspheric-surface-like resin layer 14 is formed on the junction face 12a of the glass member 12. It is thereby possible to form the flat portion 14b and the external circumferential face 14c to position an optical functional portion surface 14a of the resin layer 14 and the lens body 10 referring to a lens barrel 16 by one continuous molding face of a die member. It is therefore possible to precisely mold the positional relation among the surface 14a of the optical functional portion and the flat portion 14b and the external circumferential face 14c so that the lens body can be accurately positioned in the lens barrel 16. |
