Photochromic Sheet & Film


WeeTect Photochromic Sheet & Film (WPSF) also names photochromic plastic sheet & film, photochromic film. It is made from optical polycarbonate sheet and photochromic film with special photochromic technology. WeeTect Photochromic Sheet & Film (WPSF) can be applied to photochromic lenses, photochromic sunglasses, polarized photochromic sunglasses, photochromic safety glasses, photochromic glass sheet, photochromic goggles, photochromic motorcycle helmet visor, helmet visor insert, football visor ,photochromic spectacles etc.

At the same time, it is a perfect candidate to automatically adjust the visibility of augmented reality headset under sunlight. Such as optical head mounted display, augmented reality head up display, augmented reality head mounted display.

As WeeTect is a high end photochromic lens manufacturer, WeeTect Photochromic Sheet & Film (WPSF) is one of the best photochromic sheets with super high VLT when it is photochromic clear in house, and turns to photochromic tint on exposure to UV light quickly. At the same time, WeeTect Photochromic Sheet & Film (WPSF) offers options to add polarized feature and more surface treatment such as anti-fog coating, anti-scratch coating, anti-fingerprint coating and more. It can be applied to photochromic polarized sunglasses, photochromic polarized lenses as well. In advance, WeeTect is glad to co-develop other special features such as ballistic to support your niche market.

Photochromic Sheet, Photochromic Film Review of Advantages:

  • Convenience: you only need to offer your customer one pair of photochromic goggles for the varying light conditions.
  • UV protection: photochromic Sheet and photochromic Film absorbs 100% harmful UV radiation.
  • One stop solution: WeeTect Photochromic Sheet & Film (WPSF) 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

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

Item Property Test Method U/M Value
Optical UV Resistant EN170 % 99.99%
Haze ASTM D 1003 % 0.37
VLT Before Photochromic Tint ASTM D 1003 % 87
VLT Fully Photochromic Tint ASTM D 1003 % 20
Fully Photochromic Tint Time WeeTect Method Second 30
Change Back to Photochromic Clear Time WeeTect Method Minutes 3
Fog Free time ECE22.05/ECE324 s >22
Fog Free time Freezing Test s no fogging
Mechanical Hardness 1KG ISO 178 H 1
High velocity impact ANSI Z87.1 2010 ft/s >300
Cross-Cut tape test ASTM D 1000 NA Pass
Elongation, yield  % 7 ISO 527 % 7
Elongation, break ISO 527 % 110 ISO 527 % 110
Tensile stress, yield ISO 527 Mpa 60
Tensile modulus  MPa ISO 527 Mpa 2300
Flexural strength, yield ISO 178 Mpa 100
Flexural modulus ISO 178 MPa 2500 ISO 178 Mpa 2500
Izod notched impact, 20 °C ISO 180-1A KJ/m² 65
Physical Gravity ISO 1183 g/cm³ 1.2
Water absorption, 24 hours ISO 62 % 0.15
Thermal Mold shrinkage ISO527 % 0.5-0.7
Thermal expansion ASTM D696 1/ °C 7×10-5
Vicat Softening Temp., Rate B / 120(base sheet) ISO 306 °C 150
HDT, 0.45 MPa ISO 75/Be °C 138

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