Dali Technology has obtained patents related to zoom lenses, which reduce friction and have a simple structure that is easy to maintain.

April 2 News, the State Intellectual Property Office information shows that Zhejiang Dali Technology Co., Ltd. applied for a patent titled “Variable Magnification Lens,” with the authorization announcement number CN224067056U, authorized on March 31, 2026. The application number is CN202423275719.4, with the publication date of March 31, 2026, and the application date of December 30, 2024. The inventors are Yao Jiyuan, Che Zhigang, and Pan Bingchu. The patent agency is Beijing Tianda Intellectual Property Agency Co., Ltd., with patent agent Zhang Jian. The classification numbers are G02B7/04 and G02B7/02.

The patent abstract indicates that this utility model relates to a zoom lens, involving optical instrument technology, aimed at solving the technical problems of repeated friction between the outer wall of the zoom barrel and the inner wall of the straight sleeve, as well as complex structures that are difficult to maintain in the prior art. The utility model’s zoom lens includes a drive unit, lens group unit, position adjustment unit, and sliding component. The drive unit is connected to the position adjustment unit, which in turn connects to the sliding component and the lens group unit. The drive unit drives the lens group unit to move along the sliding component via the position adjustment unit; the lens group unit includes a zoom barrel group, a compensation barrel group, and a barrel support, with the zoom barrel group and the compensation barrel group connected to the barrel support. This utility model can reduce friction, has a simple structure, is easy to operate, and is convenient to use and maintain.

*ST Dali was established on July 19, 2001, and listed on the Shenzhen Stock Exchange on February 18, 2008. Its registered and office address is in Hangzhou, Zhejiang Province. The company is an important enterprise in China’s infrared thermal imaging field, focusing on infrared thermal imaging products with strong technological R&D capabilities.

*ST Dali’s main business is the research, production, and sales of infrared thermal imaging products. It belongs to the Shenwan industry category of Defense Military Industry - Military Electronics II - Military Electronics III, and is associated with concept sectors such as delisting warning, mid-cap, and Internet of Things.

In 2025, *ST Dali achieved an operating revenue of 347 million yuan, ranking 10th among 11 companies in the industry, far below the industry leader AVIC Optoelectronics with 21.39B yuan and the second-place Aerospace Electronics with 5.82 billion yuan. The industry average is 4.04B yuan, and the median is 2.21B yuan. Among its main business, infrared and optoelectronic products generated revenue of 285 million yuan, accounting for 82.11%. The net profit for the period was -231 million yuan, ranking 9th in the industry, while the top company AVIC Optoelectronics had a net profit of 2.35 billion yuan, and Hongming Electronics had 461 million yuan. The industry average net profit is 227 million yuan, with a median of 102 million yuan.

Recent patent information for Zhejiang Dali Technology Co., Ltd. is as follows:

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