| Title |
Optical Illumination System Design for LED Masthead Navigation Light |
| Authors |
Pil-Jae Maeng ; Jae-Hyeon Jang ; Kun-Yul Kim ; Young-Moon Yu ; Jong-Su Kim ; Jong-Tae Kim |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2014.28.8.024 |
| Keywords |
LED ; Illumination Navigation Light ; Masthead Light ; COLREG ; Fresnel Lens |
| Abstract |
This paper dealt with the LED optical illumination system design for the Masthead navigation light to replace halogen lamps. We made Fresnel lens satisfy luminous intensity distribution of "Convention on the International Regulation for Preventing Collisions at Sea(COLREG)". The optical system is designed by classifying three parts: light source, lens, and cut off plate. The source of light has been made to have the uniform horizontal and vertical light distribution by placing 6 LEDs at intervals of 54°, and as the cylindrical Fresnel lens, the lens has been designed to achieve the uniform horizontal and vertical light distribution in the range of plain light. Finally, the cover has been designed to block the light from the outside of plain light and ultimately met the standards for light distribution of navigation lights. In addition, the validity of design has been verified with manufacturing a trial product. |