A lens barrel for imaging a subject and a lens frame which holds the lens. The lens frame includes a body structure opened at a tip and an end and a lens base which fixes the lens and is adhered to a tip opening of the body the lens base includes: a tip base including an opening which exposes a tip side lens optical surface and an inner side which supports the lens and a circle or arc sidewall extending axially from the tip base the inner surface of the sidewall is formed along an outer circumference surface of the lens the inner side surface and the outer circumference are adhered to each other and a portion of the upper surface of the sidewall is provided toward an end side separated from the far end of the lens to be exposed inside the body.
