SETO 1.67 Semi-Finished Single Vision Lens

Short Description:

The semi-finished lens is based on the patient’s prescription to create the most personalized RX lens of the original blank. Different prescription power in the requirement of different semi-finished lens type or base curve.The semi-finished lenses are produced in a casting process. Here, liquid monomers are first poured into moulds. Various substances are added to the monomers, e.g. initiators and UV absorbers. The initiator triggers a chemical reaction that leads to hardening or “curing” of the lens, while the UV absorber increases the UV absorption of the lenses and prevents yellowing.

Tags: 1.67 resin lens,1.67 semi-finished lens,1.67 single vision lens

Send email to us

Product Detail

Product Tags

Specification

SETO 1.67 Semi-Finished Single Vision Lens2.webp

SETO 1.67 Semi-Finished Single Vision Lens1

SETO 1.67 Semi-Finished Single Vision Lens_proc

1.67 semi-finished optical lens
Model:	1.67 optical lens
Place of Origin:	Jiangsu, China
Brand:	SETO
Lenses Material:	Resin
Bending	50B/200B/400B/600B/800B
Function	semi-finished
Lenses Color	Clear
Refractive Index:	1.67
Diameter:	70/75
Abbe Value:	32
Specific Gravity:	1.35
Transmittance:	>97%
Coating Choice:	UC/HC/HMC
Coating color	Green

Product Features

1）The advantages of the 1.67 Index

①Lighter weight and thinner thickness, up to 50% thinner and 35% lighter than other lenses
②In the plus range, aspherical lens is up to 20% lighter and thinner than spherical lens
③Aspheric surface design for outstanding visual quality
④Flatter front curvature than non-aspheric or non-atoric lenses
⑤Eyes are less magnified than with traditional lenses
⑥High resistance to breakage (very suitable for sports and children’s spectacles)
⑦Full protection against UV rays
⑧Available with blue cut and photochromic lens

2）The definition of semi finished lens

①Semi-finished lens is the raw blank used to produce the most individualized RX lens according to thepatient's prescription. Different prescription powers request for different semi-finished lens types or base curves.
②The semi-finished lenses are produced in a casting process. Here, liquid monomers are first poured into moulds. Various substances are added to the monomers, e.g. initiators and UV absorbers. The initiator triggers a chemical reaction that leads to hardening or "curing" of the lens, while the UV absorber increases the UV absorption of the lenses and prevents yellowing.

3）What is the difference between HC, HMC and SHC？

Hard coating	AR coating/Hard multi coating	Super hydrophobic coating
makes the uncoated lens hard and increases the abrasion resistance	increases the transmittance of the lens and reduces surface reflections	makes the lens waterproof, antistatic, anti slip and oil resistance