Indian defence technology startup Tonbo Imaging raises Rs 175 crore in pre-IPO round

Tonbo Imaging, a defence technology startup based in Bengaluru, has raised Rs 175 crore in a Series D pre-IPO funding round led by Florintree Advisors, Tenacity Ventures, and the Export-Import Bank of India.

The startup said the fresh capital would accelerate the development of next-generation infrared sensors, scale deployment of high-power microwave (HPM) technologies to counter modern battlefield threats and support global expansion through enhanced working capital.

"This investment enables us to push the boundaries of innovation in infrared imaging and directed energy solutions while scaling our global footprint," Lakshmikumar said in a statement.

At the intersection of optics, AI, and the battlefield

Tonbo blends optics, artificial intelligence, and computer vision to develop advanced surveillance and targeting systems capable of operating in harsh battlefield environments across land, air, and sea. The systems are designed to deliver real-time situational awareness, precision targeting, and autonomous decision-making — capabilities increasingly critical in modern combat operations.

“Tonbo was founded with the vision of democratising access to high-end defence technology,” Lakshmikumar said. “As the modern battlefield evolves towards nimble, autonomous reconnaissance and targeting systems, the key technologies will be better sensors, low-power computer vision, and non-conventional munitions.”

Tonbo's market presence

Tonbo's systems are operational in over 30 countries and are reportedly used by entities ranging from the Indian Ministry of Defense and Israeli Defense Forces to NATO and the US Navy SEALs. Its modular technologies can be integrated into tanks, drones, naval vessels, and guided munitions.

The startup has raised over Rs 300 crore in previous rounds from investors, including Artiman Ventures, Qualcomm Ventures, Celesta Capital, Edelweiss, and HBL Engineering.

"Tonbo Imaging represents the future of defence technology," said Mathew Cyriac, Founder of Florintree Capital. "With its deep expertise in imaging, AI, and autonomous systems, the company is well-positioned to address emerging global security challenges."

“Tonbo’s software-hardware synergy is truly world-class,” added Rohit Razdan, Co-founder of Tenacity Ventures. “We believe Tonbo will emerge as a significant India-based global leader in the defense sector over the next several years.”