Title:
COMBINED SPECTACLE LENS
Document Type and Number:
Japanese Patent JP2021107885
Kind Code:
A
Abstract:
To provide a combined spectacle lens capable of sufficiently improving optical characteristics such as spectacle magnification and distortion that a conventional single lens cannot realize.SOLUTION: A combined spectacle lens, which is a combination of two lenses, is obtained by combining a first lens located on an object side and a second lens located on an eyeball side when wearing spectacles. At the center of the lens, the signs of the refractive force of the first lens and the second lens are opposite. Alternatively, the change in the refractive force from the center of the lens to a peripheral part is opposite between the first lens and the second lens.SELECTED DRAWING: Figure 1
Inventors:
IZAWA YASUTETSU
Application Number:
JP2019239524A
Publication Date:
July 29, 2021
Filing Date:
December 27, 2019
Export Citation:
Assignee:
HOYA LENS THAILAND LTD
International Classes:
G02C7/02; G02C7/06
Attorney, Agent or Firm:
Takeshi Otsuka