 STOCKHOLM, Aug. 30, 2021 PRNewswire -- EQT is pleased to announce that EQT Private Equity, through the EQT Mid Market US fund, has agreed to sell Zemax the Company to Ansys NASDAQ: ANSS. Founded in 1990, Zemax helps the worlds leading brands and institutions design optical systems for a broad range of applications by streamlining the workflow and communication among optical, mechanical and manufacturing engineers. 