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Home  > Products and Service  > Optical products  > New Glass Types  > S-LAH55VS, S-LAH65VS
 
New Glass Types
 

S-LAH55VS, S-LAH65VS

S-LAH55V and S-LAH65V, which are optical glasses that cost reduction was achieved by optimization of glass composition, have been used widely in projectors and in interchangeable lenses/zoom lenses of SLR. This time, we've upgraded S-LAH55V and S-LAH65V. By re-optimization of those glass composition and freeing of the expensive raw materials contained, further cost reduction and lower specific gravity have been achieved. We are pleased to introduce S-LAH55VS and S-LAH65VS with the unique properties that provide the advantages in higher product performance and lower product price.


  S-LAH55VS S-LAH55V S-LAH65VS S-LAH65V
Eco Optical Glass
Refractive Index nd 1.83481 1.83481 1.80400 1.80400
Abbe Number νd 42.74 42.73 46.53 46.58
CTE α
(10-7/°C)
-30~70°C 63 62 61 60
+100~300°C 77 77 75 74
Transformation Point Tg(°C) 677 695 691 691
Yield Point At(°C) 709 718 720 711
Coloring λ80 395 400 380 385
λ5 320 325 310 315
Chemical Resistance RW(P) 1 1 1 1
RA(P) 3 3 3 3
W(S) 2 4 2 3
SR 4.0 4.0 4.0 4.1
PR 1.0 1.0 1.0 1.0
Specific Gravity 4.58 4.73 4.46 4.72
Knoop Hardness Hk 740[7] 740[7] 730[7] 730[7]
Abrasion Aa 64 59 58 55
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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