PURPOSE: To provide an optical equipment which is safe for a human body and has an antimold effect for a long term.

CONSTITUTION: Members of the front group lens barrel 23 and the back group lens barrel 24 are produced by molding a synthetic resin such as polycarbonate resin. In this resin, a ceramic powder on which antibacterial metal is deposited or an org. antibacterial agent is adsorbed is compounded. In this process, a dispersant or the like to disperse the ceramic powder to the surface of the member. The obtd. barrel gives an antimold effect to an optical element, and especially, gives smooth movement in a sliding area with other members.