Achieving Transparent QR Codes on Frosted Glass Surfaces with 10.6 µm CO₂ Laser Marking
Abstract:
The integration of modern technology with traditional materials like glass has led to innovative applications, such as the creation of transparent QR codes on frosted glass surfaces using 10.6 µm CO₂ laser marking machines. This article explores the energy density requirements and the process parameters necessary to achieve this effect without compromising the structural integrity of the glass.
Introduction:
Frosted glass, with its translucent and磨砂 finish, offers privacy while allowing light to pass through. The ability to create transparent QR codes on such surfaces using a 10.6 µm CO₂ laser marking machine opens up new possibilities for product identification, authentication, and aesthetic enhancement. The challenge lies in controlling the laser's energy density to selectively remove the frosted layer without causing damage to the underlying glass.
Materials and Methods:
The study utilized a 10.6 µm CO₂ laser marking machine to irradiate frosted glass samples. The energy density was varied to determine the threshold at which the frosted layer was removed, revealing a transparent area beneath. The energy density (E) was calculated using the formula E = P/t, where P is the power of the laser and t is the duration of the pulse. The samples were analyzed for transparency, surface quality, and any signs of thermal stress or damage.
Results:
It was found that an energy density of approximately 0.5 J/cm² was sufficient to remove the frosted layer and create a transparent area on the glass surface. At this energy density, the laser ablation process was precise and controlled, with minimal heat-affected zone (HAZ). The transparency of the marked area was sufficient to allow QR codes to be scanned and recognized without difficulty. Higher energy densities resulted in increased HAZ and potential micro-cracks, compromising the glass's integrity.
Discussion:
The results indicate that precise control of energy density is crucial for the successful application of transparent QR codes on frosted glass surfaces. The 10.6 µm CO₂ laser marking machine's ability to deliver high energy in short pulses allows for the selective removal of the frosted layer without causing thermal stress裂纹 or other damage to the glass. The optimal energy density window ensures that the marking process is both efficient and safe, preserving the structural integrity of the glass while achieving the desired aesthetic and functional outcome.
Conclusion:
The use of a 10.6 µm CO₂ laser marking machine to create transparent QR codes on frosted glass surfaces is feasible and effective when the energy density is carefully controlled. By maintaining an energy density of 0.5 J/cm², it is possible to achieve the desired transparency without compromising the glass's structural integrity. This method offers a novel approach to glass marking that combines functionality with aesthetics, suitable for a variety of applications in product identification and branding.
Keywords: 10.6 µm CO₂ Laser, Frosted Glass, Transparent QR Codes, Energy Density, Laser Marking Machine
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