Optical module and eye camera

By combining optical modulation elements and optical sensors in the optical module, orthogonal and non-orthogonal polarized light signals are generated, which solves the problems of insufficient clarity and loss of detail in polarization imaging technology, and realizes high-precision target recognition and detail preservation in complex environments.

CN224459906UActive Publication Date: 2026-07-03SHPHOTONICS LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHPHOTONICS LTD
Filing Date
2025-06-17
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing polarization imaging technology suffers from insufficient clarity and loss of detail when identifying targets, especially with a decrease in signal-to-noise ratio under low-light conditions. Furthermore, traditional polarization imaging is difficult to effectively suppress ambient stray light interference and preserve high-frequency texture information.

Method used

The optical module uses light modulation elements to generate first polarized light orthogonal to the polarization state of the incident light and second polarized light non-orthogonal to it. Combined with a light sensor and a processor, the polarized light signals are processed separately to extract image information of the target object. The polarization state of the light is modulated by grating structure units and nanostructure units to enhance the contrast and detail retention of the imaging.

Benefits of technology

It achieves high-precision target recognition in low signal-to-noise ratio and high dynamic range scenarios, effectively suppresses ambient interference light, preserves high-frequency texture and microstructure information, and improves the discrimination and detail richness of imaging.

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Abstract

This application discloses an optical module and an eye camera. The optical module includes a light modulation element for receiving incident light from a target object and generating a first polarized light signal and a second polarized light signal. The first polarized light signal is orthogonal to the polarization state of the incident light, and the inner product of the second polarized light signal and the Jones vector of the incident light is greater than 0 or less than 0. A light sensor is used to receive the first and second polarized light signals and generate data information. A processor, coupled to the light sensor, is used to determine image information of the target object based on the data information. The optical module provided in this application can achieve dual optimization of reflection suppression and detail enhancement in target recognition scenarios. While improving the distinguishability of target objects, it also takes into account the richness of image detail, expanding the applicability of polarization imaging in low signal-to-noise ratio and high dynamic range scenarios.
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