Hamamatsu Photonics K.K. started as a small firm established in 1953 by Heihachiro Horiuchi who studied under the guidance of Dr. Kenjiro Takayanagi now respectfully called the “father of Japanese television.” Since then, we have inherited the “photoelectric technology” developed by Dr. Takayanagi for converting light into electrical signals as well as “the spirit of pursuing unknown and unexplored realms” which led him to the achievement of displaying the Japanese character “イ” on a cathode-ray tube for the first time in the world. Over　the　past　65 years, we have been consistently engaged in developing photoelectric devices and their application products while moving forward along with the continuing advances in technologies of light.