Ophthalmic Lenses

Educational Materials & Motorcycle Helmet

Agrochemical

Industrial Equipment

Español

General Conditions 　 1.523 Optical White Lens 　　Blank 　 1.7 Hi-index Lens Blank 　 Photochromic Grey Lens 　　Blank 　 Photochromic Brown Lens 　　Blank 　 1.523 Cruxite Lens Blank 　 Flint Button for Bifocal 　　Lens 　 Sunlens Blank (GG-15) 　 Mold Glass

Flint Button for Bifocal Lens   Refraction index Nd=1.654 Density 3.85 g/cm3 Abbe value 37 Soft. Pt. 518oC Ann. Pt. 480oC Strain Pt. 454oC Linear thermal expansion coefficient (20-300oC) 96.9x10-7 /oC White round-shape flint buttons available   White Flint 1.654 Button USD/Pair Code Dia. (mm) Curve C. Thick. (mm) Curv. Radius (mm) Price CCX ( + ) CCV ( - ) CCX ( + ) CCV ( - ) F628000000035 28 0.00 0.00 3.5 0 0 0.140 F628000000040 28 0.00 0.00 4.0 0 0 0.160 F630000000035 30 0.00 0.00 3.5 0 0 0.160 F628000000040 30 0.00 0.00 4.0 0 0 0.180 F631000000035 33 0.00 0.00 3.5 0 0 0.180 F628000000040 33 0.00 0.00 4.0 0 0 0.210   Photochromic Flint 1.654 Button USD/Pair Code Dia. (mm) Curve C. Thick. (mm) Curv. Radius (mm) Price CCX ( + ) CCV ( - ) CCX ( + ) CCV ( - ) F830000000038 30 0.00 0.00 3.8 0 0 0.220 F835000000040 35 0.00 0.00 4.0 0 0 0.300

Copyright© 2010 Y & S (Beijing) Opto-Electro Industries Ltd. All Rights Reserved.