OPTICAL ELEMENT, ITS MANUFACTURING METHOD, MOLDING DIE FOR THE SAME AND OPTICAL EQUIPMENT USING THE SAME

摘要

PROBLEM TO BE SOLVED: To enhance the hermetic sealability of a contact surface of a lens barrel for forming an optical element with an optical lens. SOLUTION: An optical equipment comprises the optical element 3, and a surface film 6 provided on a surface of a through hole provided at the lens barrel 4 for forming the element 3 in a structure for pressure-contact supporting the optical lens 5 via the film 6.