Invention Grant
- Patent Title: Active optical filter controlled by magnetic field
- Patent Title (中): 有源滤光片由磁场控制
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Application No.: US12318500Application Date: 2008-12-30
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Publication No.: US07843622B2Publication Date: 2010-11-30
- Inventor: Pil-soo Ahn
- Applicant: Pil-soo Ahn
- Applicant Address: KR Suwon-si, Gyeonggi-do KR Gongse-dong, Giheung-gu, Yongin-si, Gyeonggi-do
- Assignee: Samsung Electronics Co., Ltd.,Samsung SDI Co., Ltd.
- Current Assignee: Samsung Electronics Co., Ltd.,Samsung SDI Co., Ltd.
- Current Assignee Address: KR Suwon-si, Gyeonggi-do KR Gongse-dong, Giheung-gu, Yongin-si, Gyeonggi-do
- Agent Robert E. Bushnell, Esq.
- Priority: KR10-2008-0042458 20080507
- Main IPC: G02F1/09
- IPC: G02F1/09 ; G02F1/295

Abstract:
An active optical filter transmits or blocks light according to whether or not a magnetic field is applied, and functions as an optical filter transmitting light having a predetermined wavelength when light is transmitted according to a magnetic field. The active optical filter includes: an optical filter layer for transmitting or blocking light according to whether or not a magnetic field is applied; and a magnetic field applying unit surrounding the optical filter layer for applying a magnetic field to the optical filter layer. The optical filter layer has a multi-layer thin layer structure which is formed of two kinds of thin layers having different respective refractive indices and sequentially and periodically stacked on a substrate.
Public/Granted literature
- US20090279161A1 Active optical filter controlled by magnetic field Public/Granted day:2009-11-12
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