Being the promotive refracting power

摘要

PROBLEM TO BE SOLVED: To provide a printing mark layout of a progressive refractive power lens capable of coping with a number of kinds of the progressive refractive power lenses with the same printing mark and enables easy recognition of a measuring position of lens frequency.;SOLUTION: After manufacturing of the progressive refractive power lens 1, and before setting of the lens into a spectacle frame, the surface of the progressive refracting power lens 1 is printed with the printing mark, such as a near-part measuring mark 14, indicating a frequency measuring region of the near part drawn with two arcuate shapes facing a perpendicular direction of a wear state of the lens, an lead line extending to at least either of horizontal right-and-left directions of the arcuate shape and intrinsic information complying with the progressive band length near the lead line.;COPYRIGHT: (C)2007,JPO&INPIT