1.499 Semi-Finished Flat Top Bifocal Lens

Flat-top lens is a very convenient type of lens that allows the wearer to focus on objects both at close range and far range through a single lens.This type of lens is designed to enable viewing of objects in the distance, at close range, and in the intermediate distance with corresponding changes in power for each distance.CR-39 lens use the imported CR-39 raw monomer, which is one of the longest history of resin materials and is the most widely sold lens in middle level country.

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1.499 flat-top semi-finished optical lens
Model:	1.499 optical lens
Place of Origin:	Jiangsu, China
Brand:	SETO
Lenses Material:	Resin
Bending	200B/400B/600B/800B
Function	flat-top & semi-finished
Lenses Color	Clear
Refractive Index:	1.499
Diameter:	70
Abbe Value:	58
Specific Gravity:	1.32
Transmittance:	>97%
Coating Choice:	UC/HC/HMC
Coating color	Green

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