Optical lens, lens unit, imaging module, electronic device, optical lens production method, lens mold, and shape correction method for lens mold
AssigneeFUJIFILM Corporation
InventorsHidekane Ito, Nariya Matsumoto
Life of this patent
Estimating the term…
Abstract
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 μm and equal to or less than 14 μm, and a depth of recession of each concave mark is equal to or greater than 0.05 μm and equal to or less than 5 μm.
Claims15
An optical lens comprising a lens section with a refractive power, wherein the lens section comprises one or more effective optical lens surfaces which contributes to image forming of the lens section, and a plurality of smoothly curved first concave marks and a smoothly curved second concave mark, which are formed to be recessed on one or more surfaces of the lens section, are provided in the one or more effective optical lens surfaces, wherein a width of each of the first and second concave marks is equal to or greater than 0.05 μm and equal to or less than 14 μm, wherein a depth of recession of each of the first and second concave marks is equal to or greater than 0.05 μm and equal to or less than 5 μm, and wherein at least one of the first concave marks is formed along a simple closed curve that encloses the optical axis of the lens section, and the second concave mark is formed on the optical axis.
Dependencies are inferred from the claim text.