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
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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.
Claims16
An optical lens comprising a lens section with a refractive power, wherein a concave mark, which is formed to be recessed on a surface of the lens section, is provided in an effective optical lens surface which contributes to image forming of the lens section, wherein a width of the concave mark is equal to or greater than 0.05 μm and equal to or less than 14 μm, wherein a depth of recession of the concave mark is equal to or greater than 0.05 μm and equal to or less than 5 and wherein the concave mark is formed along a simple closed curve that encloses the optical axis of the lens section.
Dependencies are inferred from the claim text.