Ansys, a provider of engineering simulation software, agreed to acquire Zemax, a provider of high-performance optical imaging system simulations, from EQT Partners, a global investment organization. Financial terms were not disclosed. "Zemax has been a leader in optical simulation since our founding 30 years ago. Our mission is enabling customers to design sophisticated optical products and bring them to market faster. By joining forces with Ansys, we will quickly deliver Zemax's gold-standard imaging products to a wider audience and have an even greater impact on optical product development. It is a winning combination for our customers and for Ansys users across the globe," S. Subbiah, Zemax CEO.