1.499 HC lens is Hard Coated single vision lens, the material is CR-39, CR-39 lenses have a high Abbe number, high light transmission, which means that they can provide clearer visual effects, reduce dispersion phenomenon. In addition, the CR-39 material is relatively light, which makes the wearer more comfortable.
Features of China Factory Wholesale Price 1.49/1.50 Hard Coated Eyeglasses China Optical Lens
CR39 resin lenses have a transmittance of 92%, slightly higher than glass lenses with 91%.The specific gravity of CR39 is 1.32g/cm3, compared to 2.54g/cm3 for glass lenses, which means that CR39 is lighter. CR39 is more impact-resistant and safer than glass. In terms of blocking ultraviolet rays, CR39 has a stronger protective ability and can effectively block 390nm ultraviolet rays. However, CR39 has a low refractive index and thick lenses.Compared to other high-end lens materials, the production cost of CR-39 resin is lower, so the price is relatively cheap.
Specification of China Factory Wholesale Price 1.49 single vision/1.50 Hard Coated Eyeglasses Optical Lens
|
Index |
1.499 |
|
Material |
CR39 |
|
Diameter |
60/65/70mm |
|
Power Range |
SPH -6.00~ +6.00 |
|
CYL |
0~ -4.00 |
|
Abbe Value |
58 |
|
coating |
HC |
|
Coating clour |
clear |
|
Design |
Spherical |
Advantages of China Factory Wholesale Price 1.49/1.50 Hard Coated Eyeglasses Optical Lens
High Abbe number: CR39 lenses have a high abbe number, which reduces dispersion and provides a clearer visual effect.
High transparency: CR39 lenses have high transparency to provide a clear visual experience.
Strong wear resistance: CR39 lenses have strong wear resistance, especially in the case of uncoated.
Good dyeing performance: CR39 lens is easy to color, can be hardened, dyed and other treatment.
Good solvent resistance and chemical resistance: CR39 single vision 1.5 lenses have good resistance to most chemicals.
Good heat resistance: CR39 lens has good heat resistance.
