Light-splitting flat plate, light-splitting device, light-splitting lens, camera and electronic device
DE602020053554T2Active Publication Date: 2025-06-25HUAWEI TECH CO LTD
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Patent Information
- Application Number
- DE602020053554
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2020-03-27
- Filing Date
- 2020-09-28
- Publication Date
- 2025-06-25
- Estimated Expiration
- 2040-09-28
AI Technical Summary
Technical Problem
Low-illumination cameras suffer from chromatic aberration and off-axis aberration due to the introduction of a beam splitter structure, making it difficult to correct these aberrations and maintain image quality.
Method used
A beam splitter apparatus with a beam splitter plate and prisms that separates visible light and near-infrared light, ensuring equal path lengths for both wavelengths to minimize aberrations, using a thin transmissive plate and beam splitter film to reduce optical path lengths.
Benefits of technology
Reduces chromatic and off-axis aberrations, simplifying the correction process and improving image quality in low-illumination conditions.
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