| 摘要 |
A lens barrel having: an imaging optical system including, a moving lens group movable in a direction of an optical axis, a first aperture disposed on an object side of the moving lens group, and a second aperture disposed on an image plane side of the moving lens group; a first optical path regulating section formed on the image plane side of the first aperture; and a second optical path regulating section integrally formed with a holding frame for holding the moving lens group, wherein the first optical path regulating section and the second optical path regulating section are configured to block, of light fluxes that pass through the first aperture to enter the second aperture, those that do not pass through the second lens group as a moving lens.
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