Best Lens Material for Solar Street Lights: Glass,
This article provides a detailed comparison of glass, PC, and PMMA lens, along with their suitable application scenarios, to help you
Thus, due to its ductile mechanical properties, ultraviolet resistance, thermal resistance, PMMA can be a good candidate to replace glass in photovoltaic modules, . PMMA has hydrophilic properties and excellent mechanical properties, ; it can absorb radiation with strong spectral variations, .
Chiromawa et al. evaluated the attenuations of light transmissions through PMMA films of different thicknesses on SiO2 substrates for solar cell applications using Fourier transform infrared (FTIR) and ultraviolet visible and near infrared (UV–Vis-NIR) spectroscopy.
Optical properties of PMMA based Plexiglass The PMMA include Plexiglass that offers a high light transmittance with a refractive index n of about 1.49 . The losses associated to the optical reflexion R at the air-Plexiglass interface may be obtained by the Eq.1: (1) R = n - 1 2 n + 1 2
The high average optical transmittance of about 92% was noticed in the visible light. The high transmittance can be explained by the weak and low rate of absorbance of the sample; the PMMA Plexiglass doesn't transmit any light below the wavelength of 350 nm.
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