• Renewal greeting

Thank you for your patronage to our optical business. HOYA Corporation Optics division renewed the website on April 20th., 2009. You can check the up-to-date information of HOYA optical glass material and the product.

We are greatly appreciated if it brings you good solution for your research and development, optics design, and production technique.

• Feature of new website

Our new website is included the following content, and will start soon.

(1) We provide you our new glass group categories, our recommended glass types and our ref1/ref2 glass types.
(2) We introduce you our newly developed glass types as soon as possible.
(3) A new standard and premium standard are set about the refractive property and light transmission characteristics.
(4) We introduce the glass material (preform) refer to the aspherical glass lens.
(5) The property data were updated in some of glass types.
(6) Certain glass types search can be retrieved from n_d -ν_d map.
(7) We put the specified color of each group of glass types, such as our recommended glass types and our ref1/ref2 glass types.

• Color Classification

For your quick reference, each glass type name is colored according to following list:

Glass Polished Lens	H Series	12 types	red
	S Series	8 types	blue
	Ref 1 series	42 types	gray
	Ref 2 series	27 types	gray
Glass Molded Lens	All glass types	22 types	green
Preform for Precision Molded Lens	Cold Process Preform	7 types	purple
	Hot Process Preform	6 types	orange