公开(公告)号：US20180052075A1

公开(公告)日：2018-02-22

申请号：US15676138

申请日：2017-08-14

Applicant: Tomey Corporation

Inventor： Takeshi SENO ,  Chihiro KATO ,  Yuichiro NAKATA ,  Nobuyori AOKI ,  Guangchun BIAN ,  Makoto TSUKAMOTO

IPC: G01M11/02

CPC classification number: G01M11/0228 ,  G01M11/0214 ,  G01M11/0235 ,  G01M11/0257 ,  G01M11/0285 ,  G01M11/04 ,  G01N21/958

Abstract: A lensmeter includes a light emission portion configured to emit light so as to radiate the light onto a lens-to-be-inspected, and a light reception portion configured to receive the light transmitted through the lens-to-be-inspected to measure an optical characteristic of the lens-to-be-inspected. The light emission portion includes a measurement light source configured to emit green light or red light for measurement of refractive power of the lens-to-be-inspected, a first inspection light source configured to emit ultraviolet light, and a second inspection light source configured to emit blue light. The light reception portion is configured to selectively receive lights from the measurement light source, the first inspection light source and the second inspection light source respectively.