Design and Analysis of an Underwater White LED Fish-Attracting Lamp and its Light Propagation

Abstract

Light emitting diodes (LED) are a new source for replacing traditional light sources including under water illumination. As traditional underwater light sources operate under a radiative transfer model, the luminous intensity is dispersed evenly at each emission angle, with the scattering factors included in the attenuation coefficient. By contrast, LED light sources are characterized by being highly directional, causing underwater luminous energy to vary with different emission angles. Thus, the traditional theory of underwater optical transfer becomes inapplicable when an underwater LED lighting module is designed. Therefore, to construct an underwater transfer model for LED light sources, this study employed the average cosine of the underwater light field, the method for light scattering probability, the LED luminous intensity distribution curve (LIDC) and axial luminous intensity. Afterwards, an underwater LED fish-attracting lamp was designed. Experimental results showed that, compared with the simulation values, the luminous intensity of the underwater LED lighting module at all emission angles had a percentage error of less than 10%.

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“…Nevertheless, behind the brightness of MH lamp, it possesses some weaknesses, such as wasteful electric, wasteful fuel and environmentally unfriendly (Takayama & Arimoto, 2010;Seo, An & Do, 2012;Shen, Kuo & Fang, 2013). According to Hua and Xing (2013) that some of this electric power is converted to heat energy that can influence the ship crew's health and daze the eyes of juvenile and young fishes.…”

RESPONS DAN ADAPTASI IKAN TERI (Stolephorus sp.) TERHADAP LAMPU LIGHT EMITTING DIODE (LED) (Response and Adaptation of Anchovy (Stolephorus sp.) to Light Emitting Diode (LED) Lamp)

“…Introduksi teknologi lampu tersebut mampu meningkatkan produktivitas dan efektivitas penangkapan sehingga berdampak pada perkembangan perikanan lampu (light fishing) di dunia. Meskipun demikian, penggunaan lampu listrik tersebut juga memberikan dampak negatif antara lain konsumsi BBM tinggi, tidak efisien dalam penggunaan energi, menghasilkan radiasi panas dan sinar UV yang merugikan bagi manusia serta memberikan kontribusi signifikan terhadap pencemaran udara (Inada dan Arimoto 2007;Choi et al 2009;Shen et al 2013;Hua and Xing 2013). Berbagai kelemahan tersebut mendorong berkembangnya penelitian untuk menghasilkan lampu penangkapan ikan (fishing lamp) yang lebih efektif dan ramah lingkungan.…”

Taking the spectral overlap between excitation and emission spectra of fluorescent materials into account with Monte Carlo simulations

“…The MC method has been used in a broad range of applications [2], including the simulation of light propagation through systems. The method is popular in a variety of fields, including optical modeling of tissue [2][3][4], design of lighting and display applications [5][6][7], computer graphics [8][9][10], and simulation of solar applications [11][12][13][14].…”