Environmental performance
There are more than 100 types of optical glass, and in the past, generally, lead
and arsenic have been used in most of them as constituents. However these two
elements have high risks to cause the environment pollution.
So, Nikon has developed nearly full types of optical glass not containing these
two elements, and has applied them to Nikon's optical products wholly.
Product performance
Optical glass has, in general, high transmission, high homogeneity and optical
constants, and is used for lenses or prisms of various types of optical products,
for example, cameras, microscopes, etc.
In Nikon, optical glasses have been developed under cooperation with optical
design division, and Nikon has established production technologies and massproduction
structure based on Nikon's own glass production equipments. And,
high quality of optical glasses produced by them have contributed to high
performances of Nikon's products.

NIKON CORPORATION
Shin-Yurakucho Bldg., 12-1, Yurakucho 1-chome, Chiyoda-ku, Tokyo, 100-
8331, Japan
Tel +81-3-3214-5311
URL http://www.nikon.com/
URL http://www.nikon.com/about/csr/nikon-csr/index.htm