The lens stress meter, produced by Zhihe, is a precision instrument designed specifically for analyzing the stress distribution on eyeglass lenses. This device employs advanced technology to accurately measure and visualize the force exerted on the lens, indicating any potential weaknesses or imbalances. The stress meter is crucial in ensuring the structural integrity and durability of the lenses, as excessive stress can lead to premature cracking or breakage. By utilizing this tool, manufacturers and opticians can guarantee the quality and safety of the eyewear they provide to their customers.