Abstract
We proposed a scheme for designing an optical launch system that can make the light intensity more uniform on the receiving plane via a compound eye lens combined with a sunflower plano-convex lens. The simulation results demonstrate that the light converges on the optical axis after passing through the sunflower-shaped plano-convex lens array and compound eye lens. The divergence angle and central light intensity of the receiving plane are, respectively, 26.57° and 80.50% of the total emitted light power for the array structure of the compact compound eye plano-convex lens, while those are 21.80° and 62.50% for the discrete compound eye lens. From the above results, it can be seen that the compact compound eye lens is more conducive to the uniform distribution of light intensity on the receiving plane compared with the discrete compound eye lens, taking into account the dual application of illumination and communication.
Highlights
Visible light communication (VLC) technology is an emerging wireless optical communication technology developed on the white light emitting diode (LED) technology [1,2,3,4]
Based on plano-convex microlenses, a compound eye planoconvex lens is designed. rough theoretical modeling, the lens structure parameters are optimized. e flat compound eye lens can be used as a transmitting lens in a visible light communication system, which reduces the requirements for the layout of the light source array
It can be seen from the figure that the light converges on the optical axis after passing through the sunflowershaped plano-convex lens array, the light collection efficiency reaches 91.75%, and the divergence angle is greater than 11.31°
Summary
Visible light communication (VLC) technology is an emerging wireless optical communication technology developed on the white light emitting diode (LED) technology [1,2,3,4]. It uses LEDs to send out high-speed light and dark flashing signals that are difficult to distinguish with the naked eye to transmit information [5]. It can realize the functions of lighting and communication at the same time. E research and development direction of the optical lens at the receiving end of the visible light communication system is small size, light weight, short focal length, high concentration efficiency, large field of view, etc. E compound eye is a kind of visual imaging method widely existing in nature It has the advantages of large field of view, three-dimensional imaging, small aberrations, and miniaturization of the imaging system [16,17,18]. Based on plano-convex microlenses, a compound eye planoconvex lens is designed. rough theoretical modeling, the lens structure parameters are optimized. e flat compound eye lens can be used as a transmitting lens in a visible light communication system, which reduces the requirements for the layout of the light source array
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