US Patent 7854879 Optical element molding die, and optical element manufacturing method

It is to provide an optical element, an optical element molding die, and an optical element manufacturing method, which can easily but surely suppress generation of transcription failure of a resin material and also enables to manufacture an optical element with an excellent optical performance at a low cost while improving the yield. In an optical element formed with a resin material, a gate part is formed on a side face of an optical element main body, and a ratio of the thickness of the gate part with respect to the thickness of an optical function part of the optical element main body is set as 50% or more.