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Home  > Products and Service  > Optical products  > New Glass Types  > S-NBH52V, S-NBH53V
 
New Glass Types
 

S-NBH52V, S-NBH53V

S-NBH52V and S-NBH53V, which are lower cost optical glasses of S-NBH52 and S-NBH53 for polished lens blank applications. By removing the expensive raw materials included in S-NBH52 and S-NBH53, the cost reduction has been achieved. We are pleased to introduce S-NBH52V and S-NBH53V with the unique properties that provide the advantages in lower product price and higher product performance, as new material that can be widely used for projectors, interchangeable lenses and zoom lenses of SLR.


  S-NBH52V S-NBH52 S-NBH53V S-NBH53
Eco Optical Glass
Refractive Index nd 1.67300 1.67300 1.73800 1.73800
Abbe Number νd 38.26 38.15 32.33 32.26
CTE α
(10-7/°C)
-30~70°C 77 86 71 69
+100~300°C 98 109 93 89
Transformation Point Tg(°C) 497 520 538 578
Yield Point At(°C) 538 556 582 620
Coloring λ80 360 360 385 385
λ5 320 320 330 335
Chemical Resistance RW(P) 1 1 1 1
RA(P) 1 1 1 1
W(S) 1 4 2 2
SR 1.0 1.0 1.0 1.0
PR 1.0 1.0 1.0 1.0
Specific Gravity 3.01 3.09 3.19 3.28
Knoop Hardness Hk 600[6] 590[6] 600[6] 600[6]
Abrasion Aa 124 123 110 114
Detail Catalog DATA PDF PDF PDF PDF
Available shapes •pressing
•saw cut center-less ground
cylindrical blanks
•cut blanks
•pressing
•saw cut center-less ground
cylindrical blanks
•cut blanks
•pressing
•saw cut center-less ground
cylindrical blanks
•cut blanks
•pressing
•saw cut center-less ground
cylindrical blanks
•cut blanks
Please consult us about available size and tolerance.

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