Invention Grant
- Patent Title: Optical filter, and camera module and electronic device comprising the same
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Application No.: US17489020Application Date: 2021-09-29
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Publication No.: US11719867B2Publication Date: 2023-08-08
- Inventor: Jong Hoon Won , Changki Kim , Hyung Jun Kim , Yong Joo Lee , Myungsup Jung
- Applicant: Samsung Electronics Co., Ltd.
- Applicant Address: KR Suwon-si
- Assignee: Samsung Electronics Co., Ltd.
- Current Assignee: Samsung Electronics Co., Ltd.
- Current Assignee Address: KR Gyeonggi-do
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: KR 20170144897 2017.11.01
- Main IPC: G02B1/04
- IPC: G02B1/04 ; G02B1/11 ; G02B5/20 ; G02B5/22 ; C08K5/23 ; C09B57/00 ; C08K5/3417 ; C08K5/52 ; C08K3/08 ; C09B23/08 ; C09B53/02 ; H10K30/80 ; H10K39/32

Abstract:
Disclosed are an optical filter including a near infrared absorption layer on a polymer film. The polymer film has a* of about −5.0 to about +5.0 and b* of about −5.0 to about +5.0 in a color coordinate expressed by a CIE Lab color space. The near infrared absorption layer may be configured to transmit light in a visible region and to selectively absorb at least one part of light in a near infrared region. The near infrared absorption layer includes a first near infrared absorption material including a copper phosphate ester compound and a second near infrared absorption material including at least two different organic dyes. The second near infrared absorption material has a maximum absorption wavelength (λmax) in a wavelength region of about 650 nm to about 1200 nm. An electronic device may include the optical filter.
Public/Granted literature
- US20220019005A1 OPTICAL FILTER, AND CAMERA MODULE AND ELECTRONIC DEVICE COMPRISING THE SAME Public/Granted day:2022-01-20
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