Image sensor and imaging device having the same

The imaging device addresses the challenge of polarized light separation and utilization by employing a color filter unit and metasurfaces to enhance image quality and defect detection, achieving efficient light use and improved focus detection.

JP2026091040APending Publication Date: 2026-06-03CANON KK
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
CANON KK
Filing Date
2024-11-22
Publication Date
2026-06-03

AI Technical Summary

Technical Problem

Existing imaging technologies struggle to efficiently separate and utilize polarized light for improved image quality and spectral information, particularly in removing surface reflections and detecting defects in transparent materials.

Method used

An imaging device with a configuration that includes a color filter unit, separation means with polarization and non-polarization regions, and metasurfaces to separate light into multiple polarizations, allowing for high light utilization efficiency and enhanced image generation, including focus detection and defect detection.

Benefits of technology

Enables high-quality imaging by separating and utilizing polarized light effectively, reducing surface reflections, and detecting defects in transparent materials, with improved focus detection capabilities.

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Abstract

To provide an image sensor capable of acquiring polarized images with high light utilization efficiency. [Solution] The image sensor includes a first light-receiving section, a second light-receiving section, and a third light-receiving section that receive light from the incident side, a polarization separation region that separates light into a first polarization and a second polarization, and a non-polarization separation region, and also includes a separation means arranged on the incident side of the first to third light-receiving sections, wherein the first polarization is incident on the first light-receiving section, the second polarization is incident on the second light-receiving section, and the light that has passed through the non-polarization separation region is incident on the third light-receiving section.
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