1.5 mm is really ambitious. This is close to metrology-level precision. I wouldn't look into sensors aimed at robotics/autonomous vehicles. Try Creaform, Riegl

1.5 mm is really ambitious. This is close to metrology-level precision. I wouldn't look into sensors aimed at robotics/autonomous vehicles. Try Creaform, Riegl stuff, etc... Also what you're trying is far from new so maybe get acquainted with what other businesses are doing (e.g. https://www.bentley.com/en/products/brands/contextcapture https://www.bentley.com/en/products/brands/contextcapture).