About AR antireflection filter, share dry goods

What is AR membrane?

AR film considers light as a kind of wave, because light wave has the same interference property as mechanical wave. Apply a layer of antireflection film (generally “calcium fluoride”, slightly soluble in water) on the front of the lens. If the thickness of the film is equal to red light (note: red light here) at one fourth of the wavelength of the antireflection film, the red light reflected back on both sides of the film will interfere (the optical path difference is an odd number of times of the half wavelength) to offset each other. You will not see any reflection in front of the lens, because according to the conservation of energy, The red light has all gone through the lens The role of the antireflection film is to reduce the intensity of the reflected light, thus increasing the intensity of the transmitted light and making the optical system imaging clearer.

Advantages of AR glass

AR glass is also called antireflective coated glass in professional terms. The production principle of this product is to use the most advanced magnetron sputtering coating technology in the world to coat a layer of antireflective film on the surface of ordinary tempered glass, effectively increasing the transmissivity of tempered glass, making the tempered glass that originally penetrated 88% more colorful and authentic

1. The highest peak of visible light transmittance is 99%, and the average visible light transmittance exceeds 95%. The original brightness of LCD and PDP is greatly improved, and the energy consumption is reduced.

2. The average reflectivity is less than 4%, and the lowest value is less than 0.5%. It can effectively reduce the defect of the white picture caused by the strong light behind, and enjoy a clearer image quality.

3. The color is more beautiful and the contrast is stronger, so that the image color contrast is stronger and the scenery is clearer.

4. It can resist ultraviolet rays, effectively protect eyes, and greatly reduce the transmittance of ultraviolet spectrum area, which can effectively block the damage of ultraviolet rays to eyes.

5. High temperature resistance, AR glass temperature resistance>500 degrees (generally acrylic can only withstand 80 degrees)

6. The scratch resistance and abrasion resistance are the best. The hardness of AR glass film is equivalent to that of glass, which is greater than 7H (generally, the hardness of PC board is about 2H to 3H).

7. It is resistant to all kinds of cleaning agents, acid and alkali cleaning agents, and the film will not be damaged.

8. Strong impact resistance. The impact performance of 3mm thick glass is equivalent to 6mm acrylic.

9. Keep the viewing angle. Generally, the viewing angle of acrylic will become smaller after installation; After the AR glass is installed, the viewing angle will not become smaller.

10. Appearance: The surface flatness of AR glass is much better than that of coated acrylic, and the larger the size is, the more obvious the difference is.

11. The cold and hot deformation of AR glass can be almost omitted, which is suitable for various environments; At the same time, AR glass has the feeling of colored glass, and its appearance is more beautiful.

AR glass principle

When the light shines from the light sparse material to the light dense material, the reflected light will have a half wave loss. The optical path difference of the reflected light on the surface after AR film is coated on the glass by AR Glass Factory is exactly half a wavelength different from that of the reflected light on the surface before the film. The reflected light on the two surfaces before and after the film disappears, which is equivalent to increasing the energy of the transmitted light. In addition, both sides of the glass can be coated at the same time to reduce the reflection effect at the same time. Because AR glass adopts magnetron sputtering coating technology, the sputtered materials are transparent optical films formed by nanometer level atomic movement. It has no effect on the performance of the glass itself, but also has a hardening effect. It protects the glass itself and has strong adhesion. It can be regarded as forming a whole with the glass. Because people’s visual range in visible light is generally about 555nm wavelength. The transmissivity of an ordinary window glass at this wavelength is only 91.5%, while the transmissivity of an AR treated window glass at this wavelength is 99%, which is why when we look at the display of eye moistening glass window, we feel that the color is more vivid and lifelike.


Hanzhong Brisun Optics Co., Ltd. Is the high precision optical element manufacturer provides customized production of Various optical lenses, including spherical lens, cylindrical lens, optical window, mirror, prism, filter, metal base mirror and other high-precision optical elements. The base materials include various optical glass, fused quartz, calcium fluoride (CaF2), zinc selenide (ZnSe), germanium (GE), silicon (SI), sapphire, metal and other materials. And provide antireflective film, high reflection film, spectroscopic film, metal film and other optical coatings.

Welcome to OEM and Purchasing!

Recent Posts
Send Requests
Contact Form Demo (#3)