Specialty Glass : Products & Services
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Optical Glass and Lens Pressings

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 fulfill our customers' needs, while contributing to the environment and society.


Pressed Blanks

Following three types of production method:

Direct Pressed Blanks (DP)
Direct pressed blanks are formed by fully automatic process of direct casting and pressing. The DP product is superior to the RP product in dimensional accuracy in outside diameter thickness, etc., and can be supplied with edge thickness at a fixed dimension.

Re-heat Pressed Blanks (RP)
Re-heat pressed blanks are formed by a manually press method through a glass cutting and glass softening process.

Rolled and Sliced Blanks (RS)

Rolled and Sliced blanks are formed from glass rod material which has been precisely rounded off and sliced. The RS product is superior to pressed blanks in dimensional accuracy in outside diameter, thickness, etc.

Specially fabricated blanks

Custom glass, ground or sliced lens, and miscellaneous shapes for special applications.

Extruded Bar (E-bar)

Two opposite sides, though not polished, permit visual internal inspection, and the remaining four sides are fire-polished or as cast.

Note: The listed data are standard value. Because of continuous product improvement, the various data listed are subject to change without notice.