Light hood detachable mechanism

A lens hood attaching/detaching mechanism of a lens body to which a lens hood is attached, comprising:

• a body-side mounting part that is provided on a surface of the lens body so as to be opposed to the lens hood and has an attached part to the lens hood;
• protrusions that are provided on the body-side mounting part and fix the lens hood along an optical axis upon attachment;
• body-side positioning portions provided on the body-side mounting part;
• introduction recessed portions that are provided on a surface of the body-side mounting part so as to be opposed to the lens hood and allow fixing convex portions provided on the lens hood to be introduced into the introduction recessed portions upon attachment;
• and
• fixing uneven portions each of which has a convex portion and a recessed portion continuously formed from the introduction recessed portion and has the fixing convex portion brought into contact with a positioning slope continuing to the recessed portion over the convex portion when the lens hood is attached to the lens body, is rotated, and is positioned.

A lens hood attaching/detaching mechanism of a lens hood attached to a lens body, comprising:

• a hood-side mounting part that is provided on a surface of the lens hood so as to be opposed to the lens body and has an attached part to the lens body;
• protrusion receiving portions that are provided on the hood-side mounting part and are fixed to the lens body along an optical axis upon attachment;
• hood-side positioning portions provided on the hood-side mounting part;
• and
• fixing convex portions that are provided on a surface of the hood-side mounting part so as to be opposed to the lens body and come into contact with positioning slopes when the lens hood is attached to the lens body and is positioned, the positioning slopes being provided on the lens body.