Metal mirror based multispectral filter array
The metal mirror-based multispectral filter array addresses integration issues in sensor devices by enhancing durability and spectral range while reducing angle shifts, enabling effective multispectral sensing.
Patent Information
- Application Number
- CA2952683
- Authority / Receiving Office
- CA · CA
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2016-12-20
- Filing Date
- 2016-12-22
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2036-12-22
AI Technical Summary
Existing multispectral sensor devices face challenges in integrating filter arrays due to difficulties in incorporating filters like linear variable filters or circular variable filters with semiconductor-based sensor elements, leading to reduced spectral range and accuracy, and high angle shifts.
A multispectral filter array using metal mirrors is developed, comprising a first and second metal mirror sandwiching a spacer with multiple layers, aligned with sensor elements to capture multiple wavelengths, and incorporating protective layers to enhance durability.
The metal mirror-based filter array improves durability, spectral range, and reduces angle shift, facilitating efficient multispectral sensing without the integration challenges of other filter types.