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Solar photovoltaic glass embossed depth and thickness measurement

Date:2020-06-04 Source:Samsun Technology

Solar photovoltaic glass is mainly used in solar cell encapsulation glass, is an indispensable and important component of solar photovoltaic cells. With high solar energy transmission rate, low absorption rate, low reflectivity, low iron content and other excellent characteristics, it is the most ideal encapsulation material for solar photovoltaic and photothermal conversion systems, which can greatly improve the efficiency of photovoltaic and photothermal conversion. After the solar cell is installed at the edge of the glass, the mixed coating is applied to the glass surface and the coating absorbs the sunlight and transmits the light in different wavelengths to the solar cell installed at the edge of the glass.

Due to the transmissive, highly reflective nature of the glass and the sharp edges of the embossed position, it is currently difficult to measure accurately with ordinary optical measurement methods, and if contact is used it will cause secondary damage, the use of a spectral confocal sensor can be a good solution to this problem.

Solar photovoltaic glass embossed depth and thickness

Two-dimensional surface profile of solar photovoltaic glass by spectral confocal sensor scanning

Solar photovoltaic glass embossed depth and thickness

Analysis of cross-sectional profiles to measure the surface embossing depth of photovoltaic glass

Solar photovoltaic glass embossed depth and thickness


3D surface embossing of solar photovoltaic glass
The coated, ultra-hard screen glass of a smartphone or tablet is produced in a very precise process. The cut edges need to be fully inspected to determine if the glass can be used in the following assembly process. vert's colour laser coaxial displacement meter sensors are able to measure the size and thickness of the screen glass in-line using different probes. The dispersive confocal sensor measures both the warp and thickness of the glass in a single scan. The dispersive confocal sensor can also measure the depth of pits or nicks in the glass surface that are created by grinding or laser ablation. These pits can cause the glass to crack in later use due to stress.

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