Optical Glass

Since 1941, HOYA has been a premier provider of optical glasses. Over the years, this traditional material business has transformed into a key element in the development of advanced electronics and information technologies. HOYA has invested heavily in technical innovation to satisfy advanced requirements as well as to increase our commitment to environment preservation. Such commitments include the removal of lead, arsenic and other non‐environmentally friendly chemicals. Our goal is to leverage our technology to fulfil our customers’ needs, while contributing to the environment and society.

HOYA keeps supporting the optical industry that has progressed significantly in recent times through our high-quality optical glass, which is widely used for optical elements in telescopes, binoculars, lens shutter cameras, interchangeable lens, office automation apparatuses, video cameras, digital cameras, and mobile phone cameras.

Raw material is available in coarse or fine annealed options. Our extrusion melting method (E‐bar form) yields glass in strip form – not block. The two opposite surfaces, although not polished, permit visual internal inspection. The remaining four sides are fire‐polished or as cast.

E‐Bar (Extruded Material)

Raw material is available in coarse or fine annealed options. Our extrusion melting method (E‐bar form) yields glass in strip form – not block. The two opposite surfaces, although not polished, permit visual internal inspection. The remaining four sides are fire‐polished or as cast.

Glass Lenses Pressed Blanks

There are three types: direct pressed blanks (DP), re-heat pressed blanks (RP), ruled and sliced blanks (RS) for polished glass lens material.

Glass Moulded Lenses (GMO)

Glass-moulded lenses are manufactured using high-precision machines and preforms developed in-house. The lenses require no grinding or polishing.

Preforms (PF)

There are  two types preforms for precision moulding: Precision Gobs and Polishing Surface.

Glass Polished Lenses

Polishing glass lenses are manufactured using polishing processes and use pressed blanks. We offer post-processing centring, coating, painting (sumi), cementing (balsam), as per your request.

Aspherical Lenses

Patented molding process provides extremely consistent lens‐to‐lens accuracy and flawless aspheric surface. We offer seven lenses in our standard portfolio. We can also manufacture custom aspherical lenses. Our process is tailored to high volume processing.

Our Strength

With extensive experience and achievements cultivated worldwide, we are able to supply from raw material through processing and delivery. We will respond to your needs with one-stop service and with high technical strength.