Lidar and eye safety explained by Cepton CEO Dr Jun Pei

Cepton, Inc co-founder and CEO Dr Jun Pei joined Steve Darling from Proactive to delve into the convergence of lidar technology and eye safety.

Addressing concerns about lidar impact on human eyes and its role in eye safety, Dr Pei outlined the company's approach to ensuring safety standards are met. He emphasized that all devices placed on vehicles must adhere to regulatory eye safety standards. He also clarified misconceptions about the impact of different wavelengths on safety, highlighting that safety involves a combination of factors including power, pulse rate, and exposure time, in addition to wavelengths.

Dr Pei pointed out that Cepton choice of 905nm wavelengths for its lidar technology is not only for safety but also due to other advantages, such as lower power consumption and reduced heat generation, which align with AI safety thresholds. When communicating with customers, he underscored the significance of third-party certification and data-driven evidence as assurances of safety. This approach aligns with Cepton commitment to providing reliable and safe products.

Discussing lidar's performance in various weather conditions, he explained that the technology operates in the near-infrared range, which extends visibility slightly beyond that of cameras. While lidar can penetrate rain and fog to some extent, he cautioned against relying solely on automation, particularly in extreme weather conditions.

Dr Pei shared insights into Cepton design choices, specifically the use of 905nm lasers. He mentioned the maturity and safety of this choice and discussed how Cepton regulates emitted light and adjusts receiver lens size based on external light conditions, enhancing the overall functionality and safety of its lidar technology.

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