Photochromic Lenses


WeeTect Photochromic Lenses (WPL) also names photochromatic lenses, transitional lenses, photogray lenses or reaction lenses. It is made from photochromic film and polycarbonate lenses co-injection molding or photochromic coating on polycarbonate lenses. WeeTect Photochromic Lenses (WPL) can be applied to photochromic sunglasses, photochromic goggles, transition glasses, photochromic glasses, transition sunglasses, photochromic cycling glasses, transition eyeglasses, photochromaic lenses, photochromic spectacles, photochromic safety glasses, transition eyeglasses and other photochromic eyewear.

As WeeTect is a capable photochromic lens manufacturer, WeeTect Photochromic Lenses (WPL) is one of the best photochromic lenses with a super high VLT when it is photochromic clear in house, and turns to photochromic tint on exposure to UV light quickly. In advance, WeeTect Photochromic Lenses (WPL) can be added more surface treatment such as anti-fog coating, anti-scratch coating, anti-fingerprint coating and more. As an eye and face protection solution provider, WeeTect holds the know-how of photochromic coating and co-mold photochromic technology. We are glad to develop other special combination such as photochromic polarized sunglasses or prescription transition lenses to support your niche market.

Photochromic Lenses  Advantages:

  • Convenience: you only need to offer your customer one pair of photochromic sunglasses for the varying light conditions.
  • UV protection: WeeTect Photochromic Lenses (WPL) absorbs 100% harmful UV radiation.
  • One stop solution: WeeTect Photochromic Lenses (WPL) also offers anti-fog coating, hard coating, abrasion resistant coating, anti-fingerprint coating or other color tinting.
  • Reduce cost: WeeTect is a capable photochromic lens manufacturer to share cost advantage to you.
More Details

Here is a photochromic ebook for you to learn more about photochromic technology

ItemPropertyTest MethodU/MValue
OpticalUV ResistantEN170%99.99%
HazeASTM D 1003%0.37
VLT Before Photochromic TintASTM D 1003%87
VLT Fully Photochromic TintASTM D 1003%20
Fully Photochromic Tint TimeWeeTect MethodSecond22
Change Back to Photochromic Clear TimeWeeTect MethodMinutes3
Fog Free timeECE22.05/ECE324s>22
Fog Free timeFreezing Testsno fogging
MechanicalHardness 1KGISO 178H1
High velocity impactANSI Z87.1 2010ft/s>300
Cross-Cut tape testASTM D 1000NAPass
Elongation, yield  % 7ISO 527%7
Elongation, break ISO 527 % 110ISO 527%110
Tensile stress, yieldISO 527Mpa60
Tensile modulus  MPaISO 527Mpa2300
Flexural strength, yieldISO 178Mpa100
Flexural modulus ISO 178 MPa 2500ISO 178Mpa2500
Izod notched impact, 20 °CISO 180-1AKJ/m²65
PhysicalGravityISO 1183g/cm³1.2
Water absorption, 24 hoursISO 62%0.15
ThermalMold shrinkageISO527%0.5-0.7
Thermal expansionASTM D6961/ °C7×10-5
Vicat Softening Temp., Rate B / 120(base sheet)ISO 306°C150
HDT, 0.45 MPaISO 75/Be°C138

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