| 摘要 |
<p>PROBLEM TO BE SOLVED: To easily perform positioning work of an optical member holder for holding an optical element such as a lens and an image sensor in an endoscope.SOLUTION: On an axial direction end surface of a cylindrical optical member holder for holding an optical element for forming an image on a light receiving surface of an image sensor, a step part is provided having a reference surface comprising a plane surface parallel with an optical axis of the optical element. By using a jig having a support surface for supporting a side surface of the image sensor comprising a plane surface in a placement state, the reference surface and the support surface become a flush state by bringing the support surface of the jig into a surface contact with the reference surface of the optical member holder, and by bringing an outer peripheral edge part of the outside of the light receiving surface of the image sensor into contact with the axial direction end surface of the optical member holder, the position in a Y-axis direction and a Z-axis direction is regulated in positioning in the XYZ axial directions in the case where the optical axis of the optical element is made to be the Z-axis, so that positioning of the image sensor can be performed easily.</p> |
