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Home  > Products and Service  > Optical products  > New Glass Types  > S-LAH55V, S-LAH65V
 
New Glass Types
 

S-LAH55V, S-LAH65V

S-LAH55 and S-LAH65 have been used generally as optical materials for replacement lenses of digital cameras and single-lens reflex cameras.
The composition of these glass materials has been optimized to reduce costs, while maintaining optical and processing properties.
We recommend these materials as new S-LAH55V and S-LAH65V.


  S-LAH55V S-LAH55 S-LAH65V S-LAH65
Optical
properties
Refractive Index nd 1.83481 1.83481 1.80400 1.80400
Abbe Number νd 42.73 42.71 46.58 46.57
Coloring λ80 400 400 385 385
λ5 325 320 315 315
Thermal
Properties
CTE α
(10-7/°C)
-30~70°C 62 62 60 60
+100~300°C 77 76 74 73
Transformation Point Tg(°C) 695 684 691 700
Yield Point At(°C) 718 711 711 723
Mechanical
Properties
Specific Gravity 4.73 4.73 4.72 4.76
Knoop Hardness Hk 740[7] 750[7] 730[7] 730[7]
Abrasion Aa 59 59 55 56
Chemical
Properties
Water Resistance RW(p)
(Powder Method)
1 1 1 1
Acid Resistance RA(p)
(Powder Method)
3 3 3 3
Weathering Resistance W(s)
(Surface Method)
4 1 3 1-2
Acid Resistance SR 4.0 4.0 4.1 4.1
Phosphate Resistance PR 1.0 1.0 1.0 1.0
Detail Catalog DATA PDF PDF PDF PDF
Please consult us about available shape, size and tolerance.

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