1.What is DxShield®?

Do you experience any of the difficulties below?

Tired Eyes

Wearing the equipment for many hours in medical situations causes eyestrain.
It is difficult to read characters and look at screens.

Light Reflection Interferes with Your Vision

Glare from the film disrupts your work.
Your glasses and face mask reflect on the shield.

The Shield Film Fogs Up

Moisture in exhaled breath sticks to the shield, fogging it up and blocking your view.

DxShield® is a film for medical eye shield with a highly transparent anti-reflection film. Clear vision for long period of time is crucial in medical settings, especially in operating theaters. This shield is ideal for the task.
Dexerials has developed this film for shields by applying anti-reflection technology used for LCD displays.

■Conventional film(PC*1 *2

■DxShield*1 *3

  • *1 It uses a commercially available frame for eyeshields.
  • *2 Polycarbonate film
  • *3 ME2-C1500 (Polycarbonate base material)

2.Features of DxShield®

DxShield® has an anti-reflection layer on both sides of the film. This anti-reflection layer features nano-level tiny convexes arranged on the surface, which can be seen under magnification. It is called a moth-eye structure because it resembles the surface of a moth's eyes.
Dexerials' moth-eye type anti-reflection film provides anti-reflectivity to displays in the field of electronics field. Dexerials Corporation has applied this technology for medical shield applications.

■Product Structure

Difficult to fog up

Fogging of the shield is caused by water vapor contained in exhaled air sticking to the shield surface as small water droplets.
Because DxShield® uses a hydrophilic resin to form the moth-eye structure, moisture attached to the surface does not spread or wet the surface quickly, making it difficult for the film to fog up.
This feature keeps the shield fog-free from the inside, providing a clear view during medical diagnosis and treatment.

■Image of water droplets on the film surface

■Anti-fogging evaluation method and results

  • * PET Shield: Our conventional products
    * Pre-Processed
    ・ Immersion in pure water for 2 hours
    ・ Take it out and wipe off water droplets
    ・ Leave indoors for 12-24 hours

  • * PET Shield: Our conventional products
    * Pre-Processed
    ・ Immersion in pure water for 2 hours
    ・ Take it out and wipe off water droplets
    ・ Leave indoors for 12-24 hours

Low reflection / High transmission

DxShield film has convexes smaller than the wavelengths of visible light (380 to 780 nm) to make light reflection as low as possible.
Light reflection occurs between the air and a light-receiving substance that has a refractive index different to that of air. The refractive index of the moth-eye structure changes continuously so almost no light is reflected back to your eyes.

■Principle of Reflection Reduction | Light Transmission Image

■Optical Properties of Moth-eye Type Film

Base material PC PET (Reference value)
Structure Film Structure Film Structure Film Structure
Base material only
Product name ME2-C1500 ME2-M1000 ME2-M1800 -
Thickness of base material mm 0.16 0.11 0.19 0.13
Luminous reflectance*1 0.4 0.7 0.8 8.4
Total transmittance*2 99.3 98.9 98.6 90.6
Haze*2 0.2 0.2 0.3 1.3
  • *1 Test conditions for luminous reflectance
    Instrument:V-650 (JASCO Corp.)
    Incident angle:5° (Reflection),0° (Transmission)
    Light source:D65
  • *2 Test conditions for haze values and total transmittance
    Instrument:HM-150(Murakami Color Research Laboratory)
    Testing standards:JIS K7136 (ISO 14782 )(Haze), JIS K7361 (ISO 13468-1 )(Transmittance)
  • * If the film surface is scratched or stained, it may not meet the above product characteristics.

3.Mitigating the fatigue from wearing eye shields

Protective eyewear such as eye shields increases medical safety by preventing medical professionals from experiencing droplet infection through the eyes. However, in practice, eye shields are not always used due to the discomfort of wearing them and the feeling of fatigue caused by the way they scatter light and obstruct one's view.
Compared to conventional eye shields, eye shields using moth-eye type films can reduce the eyes fatigue. We hope this will improve the rate at which medical professionals wear eye shields, thus increasing medical safety and making surgical rooms easier to work in.

■Visual sensation before and after wearing eye shields

4.Product information

For more information about this product, please visit the product information page at the link below.

Medical equipment manufacturers use DxShield® as a film for eye shields and face shields.

* DxShield is registered trademark of Dexerials Corporation in Japan and other countries.