Patent ID: 6870693
Filing Date: 2005-03-22
Classification: G02B

Abstract:
1. An optical element comprising: a lens-barrel having an inner peripheral surface and an annular recess formed at an end of said inner peripheral surface having an annular recess inner surface extending axially; an optically functional surface having a flange formed on the outer periphery thereof; said flange having an outer peripheral cylindrical surface with a fitted portion fitted to the inner peripheral surface of said lens-barrel below said annular recess; said flange having an adhering portion to be adhered to the lens-barrel which is an axially extending surface radially opposing said annular recess inner surface; adhesive filled in said annular recess and on said adhering portion interconnecting said annular recess inner surface and said adhering portion; and said flange having a raised annular portion extending axially and disposed radially inward of said adhering portion to prevent the adhesive from flowing to the optically functional surface.