Invention Grant
- Patent Title: Optical article and optical filter including same
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Application No.: US16495861Application Date: 2018-04-04
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Publication No.: US10908081B2Publication Date: 2021-02-02
- Inventor: Jeong Og Choi , Joon Ho Jung , Seon Ho Yang , Jin Ho Jung , Joo Young Kim
- Applicant: LMS CO., LTD
- Applicant Address: KR Pyeongtaek-si
- Assignee: LMS CO., LTD
- Current Assignee: LMS CO., LTD
- Current Assignee Address: KR Pyeongtaek-si
- Agency: Hauptman Ham, LLP
- Priority: KR10-2017-0046181 20170410
- International Application: PCT/KR2018/003953 WO 20180404
- International Announcement: WO2018/190560 WO 20181018
- Main IPC: G02B5/20
- IPC: G02B5/20 ; G02B5/22 ; G01N21/359

Abstract:
The present invention relates to an optical article and an optical filter including the same. The optical filter: includes an optical article which has at least two absorption peaks, including a first and a second absorption peak, in the wavelength range of 380 nm to 1,200 nm by containing two or more kinds of near-infrared absorbing pigments, and thus shows a high average transmittance of 86% or greater for light having a wavelength in the visible wavelength range; can limit the maximum transmittance of light having a wavelength in the range of 800 nm to 1,100 nm below 0.5%, so as to prevent lens flare; and can reduce assembly defects due to flexure of an optical filter in the process of assembling the optical filter to an image capturing apparatus, thereby improving yield and productivity.
Public/Granted literature
- US20200072741A1 OPTICAL ARTICLE AND OPTICAL FILTER INCLUDING SAME Public/Granted day:2020-03-05
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