| Year | Detail |
| 1941 |
HOYA Corp. was founded and started the production of optical glass. |
| 1945 |
Production of crystal stemware. |
| 1962 |
Production of eyeglass lenses. |
| 1972 |
Production of contact lenses. |
| 1973 |
Listed on the first section of the Tokyo Stock Exchange. |
| 1984 |
The company name changed to Hoya Corporation. |
| 1986 |
Research and Development building established. |
| 1991 |
Launch of HDD glass disks. |
| 2008 |
The company merged with PENTAX Corp. |
| 2011 |
Sale of PENTAX digital camera business. |
| 2017 |
Acquisition of Performance Optics LLC. |
| 2019 |
Acquisition of Mid Labs and Fritz Ruck. |
| 2019 |
Production of EUV blanks for semiconductors in Singapore. |
| 2022 |
Transfer of HOYA Digital Solutions Corp. |
| 2023 |
The company announced the establishment of an endoscope manufacturing, R&D, and service center in Shanghai, China, under PENTAX Medical Shanghai Co. Ltd. |