Skip to header
Products and ServiceAbout OHARAInvestor RelationsContact Us

Products and Service
New Glass Types


Introducing S-FPM2, an anomalous dispersion glass in the intermediate refractive index region that is easy to handle when processing and cleaning, thanks to the excellent balance between wear rate and acid resistance. By combining it with a glass material of high refractive index and high dispersion, this product can be effective for correcting chromatic aberration and manufacturing compact lens units.

Eco Optical Glass
Refractive Index nd 1.59522
Abbe Number νd 67.74
-30~70°C 117
+100~300°C 135
Transformation Point Tg(°C) 571
Yield Point At(°C) 596
Coloring λ80 355
λ5 295
Chemical ResistanceRW(P) 1
RA(P) 2
W(S) 2
SR 51.3
PR 4.1
Specific Gravity 4.17
Knoop Hardness Hk 390[4]
Abrasion Aa 488
Detail Catalog DATA PDF
Available shapes •pressing
•saw cut center-less
groundcylindrical blanks
•polished ball
•cut blanks

Please consult us about available size and tolerance.

To the top of the page

Products and Service
|  Site Map  |  Protection of the Personal Information  |  Location  | (c) OHARA INC. All rights reserved.