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Development Glass Types
 

L-LAH85V

The composition of L-LAH85, a general-purpose glass material for molded small aspherical lenses of digital cameras, has been optimized for improved molding workability, while maintaining ndd.
We recommend L-LAH85V as a material that can be molded at temperatures lower than L-LAH85, with shorter molding tact time and higher compatibility with separation film (protective film) of metallic molds (based on results obtained by our company).


  L-LAH85V L-LAH85
Eco Optical Glass
Refractive Index nd 1.85400 1.85400
Abbe Number νd 40.4
40.38
40.4
40.39
CTE α
(10-7/°C)
-30~70°C 62 65
+100~300°C 75 78
Transformation Point Tg(°C) 615 614
Yield Point At(°C) 656 659
Coloring λ70 380 375
λ5 340 330
Chemical ResistanceRW(P) 1 1
RA(P) 3 2
W(S) 3 4
SR 4.2 2.2
PR 1.0 1.0
Specific Gravity 5.25 5.09
Knoop Hardness Hk 690[7] 650[7]
Abrasion Aa 58 65
Detail Catalog DATA During the data acquisition PDF
Available shapes •pressing
•saw cut center-less
groundcylindrical blanks
•polished ball
•cut blanks
•FG
•pressing
•saw cut center-less
groundcylindrical blanks
•polished ball
•cut blanks
•FG

Please note that the physical properties may change, since they are data obtained during development.
Please consult us about available size and tolerance.

 
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