Gloss Tester | What is the Gloss and Haze of AG Glass?

From:Linshang Time:2020/04/26 11:00:00 Browse:180
Many users still do not understand the glass gloss and haze. This article will briefly introduce the difference between the gloss and haze of AG glass.

1. What is AG glass?

AG glass (anti-reflective glass) is a kind of glass suitable for building materials, solar energy utilization, etc. to resist reflection and increase light transmittance. It is mainly composed of SiO2, calcium oxide and sodium oxide. The Al2O3 and SiO2 content in aluminosilicate glass is very high compared with the same period of last year. In the production of AG glass, the chemical reactions of the two glasses are different. As far as AG anti-glare glass is concerned, these two glasses have very different roughness and haze under the same gloss requirements.

When the gloss is close, the roughness of high alumina glass is only 50% of soda lime glass, but the haze and clarity are strange. In other words, the glass material is also a key factor affecting the roughness of the etched AG glass.

2. Difference between gloss and haze

Glossiness can be understood as the object surface roughness. That is, the smoother the surface, the more "reflective", the more "bright" the human eye feels, the higher the gloss. The industries that need to measure glossiness are very wide. It is recommended to use Linshang gloss tester. Written explanation: Glossiness is a physical quantity that evaluates the ability of material surface to reflect light specularly.

We can understand the concept of haze as the ability to scatter light. The light is scattered. The greater the haze, the stronger the ability of the material to scatter light and the more we cannot see clearly. For example, frosted glass, standing on the other end of the glass, the human eye can't see the another side of the glass, but the glass can transmit light. In the mobile phone and automotive industries, it is often necessary to measure the haze parameter. The written explanation is: the ratio of the scattered light flux and the transmitted light flux that deviate from the direction of the incident light through the sample, expressed as a percentage. Usually only scattered light fluxes that deviate more than 2.5 degrees from the direction of incident light are used to calculate haze.

3. The relationship between the gloss and haze of AG glass

The gloss at 60 angles is inversely proportional to the haze. The higher the gloss, the lower the haze. The gloss is proportional to the sharpness. The higher the gloss, the higher the clarity.

AG glass is not without reflection, but the reflectivity will be lowered by 1% or less. After the glass is etched AG, it has an anti-glare effect, but the gloss is reduced, the haze is increased. The transmittance will be reduced accordingly. AR glass is a film layer that can increase the transmittance and reduce the reflectivity by adding a layer on the glass surface. Most of the spectacle lenses we use are AR coating. In terms of appearance, AR glass is smooth and transparent and AG glass has slightly matte effect on the surface.

4. AG glass gloss detection

To measure the specific gloss of AG glass, you can use Linshang gloss tester. The glossiness measurement range of LS191 gloss tester is from 0-200GU. The glossiness measurement range of LS192 is from 0-1000GU. For customers, the only difference between the two instruments is the glossiness measurement range. Therefore, when selecting the instrument, you only need to determine whether the gloss of the measured object is within the range. In general, low-gloss materials such as frosted glass, paper, leather, plastic, furniture, etc. can be measured using a small glossiness measurement range of LS191 gloss tester. For the glossiness meaurement of high-gloss materials such as metal, mirror material, polished marble, we can use LS192 large range gloss tester.

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