An oil immersion imaging system for reflectance thermography

By acquiring reflected light signals and temperature through optical detection, oil immersion, and oil temperature sensing modules, and combining them with the control and processing module for benchmark correction and physical constraint iteration, the instability problem of temperature distribution field under oil immersion imaging conditions is solved, and more reliable temperature field inversion is achieved.

CN122408971APending Publication Date: 2026-07-17CHINA ELECTRONICS RELIABILITY AND ENVIRONMENTAL TESTING INSTITUTE ((THE FIFTH INSTITUTE OF ELECTRONICS MINISTRY OF INDUSTRY AND INFORMATION TECHNOLOGY) (CHINA SAIBAO LABORATORY)
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Patent Information

Application Number
CN202610658579.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-13
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing reflectivity thermal imaging technology, under oil immersion imaging conditions, cannot simultaneously consider the stability of the reference state, oil temperature changes, and oil immersion parameter drift, resulting in unstable or locally distorted temperature distribution field inversion results.

Method used

An optical detection module, an oil immersion module, and an oil temperature sensing module are used to acquire reflected light signals and the temperature of the oil immersion medium. Combined with a control processing module, reference correction, oil immersion parameter compensation, and physical constraint iteration are performed. The temperature distribution field is output using a physical information variational model.

Benefits of technology

It improves the stability and reliability of the temperature distribution field on the surface of the sample under test, and reduces the impact of oil film disturbance and local reflection anomalies on the temperature field output.

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Abstract

本发明属于反射率热成像技术领域,提供一种用于反射率热成像的油浸成像系统,包括光学探测模块、油浸模块、油温传感模块和控制处理模块。系统获取待测样品在预设基准状态下的第一反射光强特征、通电发热状态下的第二反射光强特征及折射率匹配介质的实时工作温度;根据第一反射光强特征和实时工作温度,对第二反射光强特征进行基准校正和油浸参数补偿,得到反射光强变化特征;将其输入物理信息变分模型,构建潜在特征向量,并基于光学反射物理约束和油浸光学参数生成虚拟反射光强特征,对潜在特征向量迭代更新后解码输出待测样品表面温度分布场。本发明可提高温度分布场获取的稳定性、抗干扰性和可靠性。
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