Lens Array with or without Etching Groove developed by SUNA-opto is a high-precision micro lens array product for CPO Application and optical transceiver scenarios. It adopts a multi-sphere array design, which is suitable for multi-channel highly integrated PIC design. The ball-in-slot structure is integrated with Spacer, which can effectively avoid sphere contamination and wear. It supports customized array channel number and surface parameters, and adapts to the multi-channel optical coupling requirements of co-packaged optical systems and high-speed optical modules.