| 摘要 |
PURPOSE:To improve the fitting position accuracy between each optical element for constituting an optical system, by providing a positioning means on the optical element which can be formed by a mold. CONSTITUTION:Pins 2a, 2b whose optical size position accuracy has been secured are manufactured by integrating them as one body by means of mold forming on a fitting reference surface (bottom face) side of a toric lens 1, and when integrating them into a container 3, these pins 2a, 2b are fitted into long holes 4a, 4b which have been provided in advance in the container 3, and supported and fixed. In this way, the fitting position accuracy of the toric lens 1 to the container 3 is secured, and said pins can be supported and easily fixed and also with a high accuracy by a few component parts.
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