Abstract: The temperature of aerial camera varies greatly in the working environment, and the temperature change will produce a temperature gradient in the optical lens of the camera, which will affect the image quality of the camera. In order to ensure the image quality of the optical system, the lens need to be designed for dissipate heat within a certain temperature range. The thermal analysis of an aviation camera optical system was accomplished by ZEMAX optical design software. According to the analysis results, the integrated optical-mechanical design of passive athermalization of multi-chip and large-field optical len was realized with ANSYS software. The image compensation at different temperature was achieved through micro-displacement variation between the compensation link inside the lens along the axial direction. At the same time, an optical non-contact online detection method was proposed with high precision, and the accuracy is ±1 μm. And then heat dissipation compensation test piece was developed to achieve micro displacement test, which showed the test data of micro displacement was consistent with the analysis data. Finally, the effectiveness of the design was verified by the image quality testing of the actual aerial lens with this integrated design, and the lens performs well at working temperature.