PROBLEM TO BE SOLVED: To obtain a lens holding structure capable of reducing strained stress applied to a cylindrical caulked edge of a lens holding frame to prevent a crack from occurring in lenses held by the lens holding frame.SOLUTION: A lens holding structure comprises: a lens holding frame 31 including a metal cylindrical member and having a cylindrical caulked edge 32 formed in at least one end of the metal cylindrical member and lenses L1 and L2 held by the lens holding frame 31 by inserting them into the lens holding frame 31 so as to regulate those positions in an optical axis direction and mechanically caulking the cylindrical caulked edge 32 inward. At least two slit parts 32a are formed so as to be spaced from each other in a circumferential direction in the cylindrical caulked edge 32.COPYRIGHT: (C)2014,JPO&INPIT【課題】レンズ保持枠の円筒状かしめ縁部にかかる歪み応力を低減して、レンズ保持枠に保持したレンズにクラックが生じるのを防止できるレンズ保持構造を得る。【解決手段】金属製の筒状部材からなりその少なくとも一端部に円筒状かしめ縁部32が形成されたレンズ保持枠31と、このレンズ保持枠31に光軸方向位置を規制されて挿入され円筒状かしめ縁部32を内方に機械かしめしてレンズ保持枠31に保持されるレンズL1、L2と、を備えるレンズ保持構造において、円筒状かしめ縁部32に、周方向に離間させて少なくとも2つのスリット部32aを形成したことを特徴とするレンズ保持構造。【選択図】図8
