Invention Grant
- Patent Title: Optical filter
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Application No.: US15754419Application Date: 2016-09-20
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Publication No.: US10444546B2Publication Date: 2019-10-15
- Inventor: Chad R. Wold , Michael F. Weber , Myron K. Jordan
- Applicant: 3M INNOVATIVE PROPERTIES COMPANY
- Applicant Address: US MN St. Paul
- Assignee: 3M Innovative Properties Company
- Current Assignee: 3M Innovative Properties Company
- Current Assignee Address: US MN St. Paul
- Agent Clifton F. Richardson
- International Application: PCT/US2016/052580 WO 20160920
- International Announcement: WO2017/058562 WO 20170406
- Main IPC: G02C7/10
- IPC: G02C7/10 ; G02B5/28 ; A61F9/02 ; G02B5/22

Abstract:
An optical filter including a polymeric multilayer optical film is provided. The optical film has a reflection band having a reflection band edge that is, independent of location, one of a short wavelength band edge at a short wavelength side of the reflection band and a long wavelength band edge at a long wavelength side of the reflection band. The reflection band edge has a normal incidence reflection band edge wavelength that varies with location and that is a first wavelength at a first location and a second wavelength at a second location different from the first location. The first wavelength may be higher than the second wavelength by at least 2 percent.
Public/Granted literature
- US20180239171A1 OPTICAL FILTER Public/Granted day:2018-08-23
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