The 2025 Changchun International Optoelectronic Expo and Light Conference began on Tuesday in Changchun, Jilin province, with displays demonstrating cutting-edge optoelectronic information technology and the latest products in the industry.

The Light Conference, jointly held with the expo for the first time, attracted nearly 1,000 academicians and experts from 26 countries and regions, a new high attendance.

The expo covers six optoelectronic industry clusters and 15 industry directions. This year, it is hosting 55 conferences.

A dynamic display area for low-altitude flight and autonomous driving has been added to provide visitors with a unique experience.

The expo has attracted 850 optoelectronic companies from China, the United States, the United Kingdom, Germany, Italy, Japan, and South Korea.

Local research institutes, such as the Changchun Institute of Optics, Fine Mechanics and Physics of the Chinese Academy of Sciences, Northeast Normal University, and Changchun University of Science and Technology, are participating in the expo, showcasing Changchun's research strength as the "cradle of China's optoelectronics industry".

The Changchun Institute of Optics, Fine Mechanics and Physics of the Chinese Academy of Sciences brought its "black technologies", such as the extreme ultraviolet camera developed for the Chang'e 7 and Queqiao 2 relay satellites, which can capture the dynamics of extreme ultraviolet photons, helping scientists unravel the mystery of how solar activity affects Earth's space.

In the Optoelectronic Display and Laser Technology Area at Hall A2, companies such as BOE, Han's Laser, and Leyard showcase the latest applications, from flexible screens to laser cutting.