The brothers Shoichi and Shigeru Yamanaka established an optical glass production plant in the city of HOYA, Tokyo, and production of optical glass began.

The plant incorporated with capital of 1.2 million yen.

HOYA launches crystal products.

HOYA listed on the Second Section of the Tokyo Stock Exchange.

The company launches progressive multifocal lenses.

HOYA Starts Sales of soft contact lenses.

The Company listed on the First Section of the Tokyo Stock Exchanges.

The company begins production of IC substrates. The company introduces online ordering system for eyeglass lens.

The company is renamed Hoya Corporation, and the current Head Office building is completed.

The company establishes R&D Center in the city of Akishima.

HOYA launches intraocular lenses (IOLs) as well as aspherical molded-glass lenses.

HOYA establishes HOYA Europe B.V. of the Netherlands (currently HOYA Holdings N.V.) and HOYA Corporation USA to reinforce global management.

HOYA launches glass disks for HDDs.

First Group's Philosophy of Environment issued.

HOYA invites first outside director.

HOYA forms an alliance with IBM to develop a next-generation glass disk for HDDs.

HOYA introduces its "internal company system," reorganizing Group operations centered on two internal companies (Electro-Optics and Vision Care) and three subsidiaries (HOYA Photonics, Inc., HOYA Healthcare Corporation, and HOYA Crystal Corporation). Hoya establishes HOYA Holdings Asia Pacific Pte Ltd, as the third regional area HQ after HOYA Holdings N.V. and HOYA Holdings, Inc., the area HQs for Europe and North America, respectively.

HOYA launches HOYALUX Summit Pro and NuLux lenses that use EYRY, a high-index, plastic lens material.

HOYA begins manufacturing soft intraocular lenses.

HOYA establishes a company-with-committees system.

HOYA transfers its global financial management operations to an area HQ in Europe.

HOYA common stock splits four-for-one.

As a result of the Tender Offer, PENTAX became a consolidated subsidiary of HOYA .

HOYA and PENTAX merged.

HOYA terminated the Crystal business.

HOYA Healthcare Co. Ltd. was absorbed by HOYA Corporation and became Eye Care Division.