Yoshihisa Maitani (January 8, 1933 – July 30, 2009) was a designer of cameras for the Japan-based camera manufacturer Olympus Corporation. After studying mechanical engineering at university, he joined Olympus Optical Co., Ltd. (now Olympus Corporation) in 1956. Maitani went on to work for them for 40 years. He was involved with the design of many of the company's most well-known cameras, including the Pen and the Pen F half frame cameras, the OM System, and the XA.
Source: “Yoshihisa Maitani”, English Wikipedia (CC BY-SA 4.0), excerpt