Hamamatsu Photonics has served the automotive industry since 1978, when we introduced our first sun load sensors for HVAC systems. Over the years, we have continued to deliver top quality opto-semiconductors for use in safety systems, automatic climate control systems, data communications and many other advanced car features. Today, there are tens of millions of Hamamatsu parts operating reliably in the field. We are trusted by car manufacturers because of the high reliability and performance of our products. Each individual part goes through several 100% inspection steps before it ever reaches the customer.