Abstract
Video-conferencing systems including multi-camera systems require stable camera pose and focus to maintain high-fidelity feature reproduction. Temperature-induced changes in the lens stack-up of a camera can introduce reprojection errors that affect visual quality. This disclosure describes techniques that reduce or eliminate intrinsic reprojection errors originating from the temperature dependence of elements within the lens stack-up. The camera module is athermalized by uniformly heating an encasing equithermal frame that stabilizes the lens stack-up to a temperature above ambient and device operating temperatures. The camera module temperature is maintained at an unchanged value even as the ambient temperature changes and even as intrinsic heat dissipates into the lens stack-up. The constant temperature is achieved via a control loop regulating the temperature of the equithermal frame and material around the camera module.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
Schoenen, Alexander and Joshi, Anupam, "Athermalization of Camera Modules to Minimize Intrinsic Reprojection Errors", Technical Disclosure Commons, (February 26, 2026)
https://www.tdcommons.org/dpubs_series/9401