Angle selective filter
The optical filter assembly with a bandpass and angular shift filter addresses angle-induced performance issues by controlling light incidence angles, improving sensor system performance and reducing complexity.
JP2025005376APending Publication Date: 2025-01-16VIAVI SOLUTIONS INC(US)
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Patent Information
- Application Number
- JP2024033789
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2023-11-07
- Filing Date
- 2024-03-06
- Publication Date
- 2025-01-16
Smart Images
Figure 2025005376000001_ABST
Abstract
To solve the problem that filter performance of an optical filter may be degraded when an angle of incidence of light directed toward the optical filter changes from a configured angle of incidence to a threshold angle of incidence, which may cause blue shift of band edges to shorter wavelengths.SOLUTION: In some embodiments, an optical filter assembly comprises: a first optical filter disposed on a first side of a substrate, the first optical filter being a bandpass filter; and a second optical filter disposed on a second side of the substrate, the second optical filter being associated with a threshold amount of angular shift at a threshold angle of incidence.SELECTED DRAWING: Figure 1
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