01017nam a2200253 c 4500001001300000005001500013007000300028008004100031041001300072049003200085052001800117056001400135082001900149245021600168260004900384300004400433502012100477504002900598546002500627650004000652700004500692900001100737900001500748KDM20130846920210924164339ta130912s2013    ggkad    m JJ 000   kor  0 akorbeng0 lEM5743127lEM5743128c2fDP01a569.81b13-13  a569.812501a621.38154222100a빛 公害 防止를 위한 懸垂線形 LED 街路燈用 非球面 光學系에 관한 硏究 =x(A) study on aspheric optics catenary type LED street lighting for the prevention of light pollution /d李時雨  a시흥 :b韓國産業技術大學校,c2013  axiii, 139 p. :b삽화, 도표 ;c26 cm1 a학위논문(박사) --b韓國産業技術大學校 知識基盤技術·에너지大學院,c光나노專攻,d2013  a참고문헌: p. 133-137  a영어 요약 있음 8a빛 공해[--公害]0KSH20200007121 a이시우,g李時雨0KAC2021A58994aut10aI, Siu10aLee Shiwoo