Title:
レンズメータ
Document Type and Number:
Japanese Patent JP7088527
Kind Code:
B2
Abstract:
To achieve a compact configuration for measuring blue light transmittance in a lens meter that can measure blue light transmission.SOLUTION: A lens meter 1 includes: a first light source 12 of measurement light for optical characteristic measurement; a second light source 15 of measurement light for measuring blue light transmittance; a second light source substrate 14 provided with the second light source 15 and having a passage hole of measurement light of the first light source 12; a pattern mask 17; a light receiving unit 19 that receives measurement light that has passed through a test lens 9 and the pattern mask 17; an optical characteristic calculation unit 20 that calculates an optical characteristic of the tested lens 9 using the measurement light of the first light source 12; a transmittance calculation unit 21 that calculates blue light transmittance of the tested lens 9 using measurement light of the second light source 15; and an output unit 22 that outputs an optical characteristic and a transmittance. Thus, a compact construction enables measurement of the transmission of blue light.SELECTED DRAWING: Figure 2
Inventors:
Noriyoshi Hayashi
Shunji Takashima
Kasuke Inokuma
Shunji Takashima
Kasuke Inokuma
Application Number:
JP2017239372A
Publication Date:
June 21, 2022
Filing Date:
December 14, 2017
Export Citation:
Assignee:
Rexum Co., Ltd.
International Classes:
G01M11/02; G01M11/00
Domestic Patent References:
| JP2013036919A | ||||
| JP2006267108A | ||||
| JP2015117948A | ||||
| JP8122211A | ||||
| JP2010514101A | ||||
| JP2007205876A | ||||
| JP11211617A |
Attorney, Agent or Firm:
Tanigawa Hidekazu
Satoshi Morimoto
Satoshi Morimoto
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