LENS BARREL AND OPTICAL APPARATUS

摘要

The lens barrel includes a lens housing barrel including a first barrel portion and a second barrel portion having a diameter smaller than that of the first barrel portion, an external barrel disposed at an outer circumference of the lens housing barrel and extending from an object side further than the first barrel portion to the second barrel portion, and a first elastic member disposed between the external barrel and the second barrel portion and elastically deformable with a movement of the external barrel with respect to the lens housing barrel due to an external force from the object side. The lens barrel further includes a second elastic member disposed between the external barrel and the first barrel portion and elastically deformable with a movement of the external barrel with respect to the lens housing barrel due to an external force from a radially outer side.

主权项

1. A lens barrel comprising:
a lens; a lens housing barrel including (a) a first barrel portion to house the lens and (b) a second barrel portion provided on an image side in an optical axis direction further than the first barrel portion and having a diameter smaller than that of the first barrel portion; an external barrel disposed at an outer circumference of the lens housing barrel and extending from an object side in the optical axis direction further than the first barrel portion to the second barrel portion; a first elastic member disposed between the external barrel and the second barrel portion and elastically deformable with a movement of the external barrel with respect to the lens housing barrel due to a first external force from the object side; and a second elastic member disposed between the external barrel and the first barrel portion and elastically deformable with a movement of the external barrel with respect to the lens housing barrel due to a second external force from a radially outer side.