An apparatus for spin casting lenses includes a rotatable tube, the rotatable tube defining a longitudinal cavity, wherein the longitudinal cavity is configured to receive molds. According to one exemplary embodiment, the rotatable tube is made of metal and includes a plurality of apertures configured to permit the transmission of actinic radiation.

An optical lens 11, which has a lens section with a refractive power, has concave marks 33, 35, 37, and 39 which are formed to be recessed on a surface of the lens section, in an effective optical lens surface which contributes to image forming of the lens section. A width of each of these concave marks 33, 35, 37, and 39 is equal to or greater than 0.05 m and equal to or less than 14 m, and a depth of recession of each concave mark is equal to or greater than 0.05 m and equal to or less than 5 m.

An apparatus for spin casting lenses includes a rotatable tube, the rotatable tube defining a longitudinal cavity, wherein the longitudinal cavity is configured to receive molds. According to one exemplary embodiment, the rotatable tube is made of metal and includes a plurality of apertures configured to permit the transmission of actinic radiation.