Hoya Corporation is a diversified Japanese precision optics and medical technology company with businesses spanning eyeglass lenses, semiconductor photomasks, endoscopes, and intraocular lenses. The company is one of the world's largest manufacturers of ophthalmic lenses, supplying finished and semi-finished lenses to eyewear retailers globally. Hoya's semiconductor photomask business supplies critical patterning materials to chip manufacturers.

For international investors, HOYA Corporation is a Japanese precision optics and healthcare technology company with global leadership positions in ophthalmic lenses, photomasks for semiconductor and display manufacturing, and medical endoscopy equipment. The company's photomask business serves semiconductor and display manufacturers worldwide, while its ophthalmic lens division — including progressive lenses sold under multiple brands — represents one of the world's largest vision care materials businesses. HOYA's diversified high-precision optics applications across healthcare and technology provide a distinctive and defensible market profile.