Invention Grant
- Patent Title: Transmission type color calibration chart and calibration slide glass
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Application No.: US16084205Application Date: 2017-03-30
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Publication No.: US11340115B2Publication Date: 2022-05-24
- Inventor: Yoshihiko Ogino , Yoichi Kajimura , Takahiro Sahara , Kunio Taguchi , Yasushi Sasagawa , Hitoshi Mizuno , Shota Mitani
- Applicant: DAI NIPPON PRINTING CO., LTD.
- Applicant Address: JP Tokyo-to
- Assignee: DAI NIPPON PRINTING CO., LTD.
- Current Assignee: DAI NIPPON PRINTING CO., LTD.
- Current Assignee Address: JP Tokyo-to
- Agency: Oliff PLC
- Priority: JPJP2016-071831 20160331,JPJP2016-072002 20160331
- International Application: PCT/JP2017/013358 WO 20170330
- International Announcement: WO2017/170910 WO 20171005
- Main IPC: G01J3/52
- IPC: G01J3/52 ; G02B21/34 ; G02B5/20 ; G01J3/02 ; G01N21/27

Abstract:
A transmission type color calibration chart comprises a transparent substrate and a color bar group formed on the transparent substrate, wherein the color bar group is constituted by color bars of a plurality of colors containing at least a first color and a second color arranged in a pattern in no particular order, coordinate points of the first color are within a region encompassed by the four points (0.351, 0.649), (0.547, 0.453), (0.380, 0.506) and (0.433, 0.464) on an xy chromaticity diagram, coordinate points of the second color are within a region encompassed by the four points (0.125, 0.489), (0.112, 0.229), (0.270, 0.407) and (0.224, 0.242) on an xy chromaticity diagram, and the transmission spectrum of the first color's color bar and the transmission spectrum of the second color's color bar have peak tops that are respectively separated.
Public/Granted literature
- US20190137340A1 TRANSMISSION-TYPE COLOR CALIBRATION CHART AND CALIBRATION SLIDE GLASS Public/Granted day:2019-05-09
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