SETO 1.74 Semi-Finished Single Vision Lens

Semi-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. 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: 1.74 resin lens,1.74 semi-finished lens,1.74 single vision lens
send email to us

Products Details

1）The advantages of high index lens Semi finished lens can be reprocessed to finished lens, and the prescription can according to your requirement. As 1.74 finished lens, there are several advantages for your reference. 1.74 High Index ASP Semi Finished Lens Blanks UV400 Protectiom Without Coating 1. High index lenses are thinner: High index lenses are much thinner due to their ability to bend light. As they bend light more than an ordinary lens they can be made much thinner but offer the same prescription power. 2. High index lenses are lighter: As they can be made thinner, they contain less lens material and are therefore much lighter than ordinary lenses. These benefits will increase the higher the index lens option selected. The more the lens bends light, the thinner and lighter it will be. 3. Impact resistance: 1.74 high index lenses meet FDA standard, can pass the falling spere test, have higher resistance to scratches and impact 4. Design: It approaches flat base curve, can offer people amazing visual comfort and aesthetic appeal 5. UV protection: 1.74 single vision lenses have UV400 protection, that means full protection against UV rays, including UVA and UVB, protect your eyes everytime and everywhere. 6. Aspherical shape: Aspherical lenses are thinner and lighter than spherical lenses, relieving the visual fatigue caused by oppression effectively. In addition, they also can reduce aberration and distortion, give people more comfortable visual effect.2）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
1.74 semi-finished optical lens
Model: 1.74 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: 1.74
Diameter: 70/75
Abbe Value: 34
Specific Gravity: 1.34
Transmittance: >97%
Coating Choice: UC/HC/HMC
Coating color Green

Previous:SETO 1.59 Photochromic Polycarbonate Lens HMC/SHMC

Next:Opto Tech Mild ADD Progressive Lenses

High Index 1.61 Vs 1.67, Hard Resin Lenses, Sunlens Manufacturer, Glasses Bifocal, Lens Index 1.5 Vs 1.61, China Cr Hmc Lenses, Hard Coated Lenses, Pc Flat Top Bifocal Lenses, Blue Cut Lenses Vs Anti Glare, China Eyewear Lenses,

Featured Products

Contact us

Please feel free to give your inquiry in the form below We will reply you in 24 hours