Journal of the Korean Crystal Growth and Crystal Technology (한국결정성장학회지)

The Korea Association of Crystal Growth (한국결정성장학회)
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Characteristics of green colored opal glass with contents of iron oxide for LED light diffuser

LED diffuser용 green color 유백유리에 있어서 산화철 함량에 따른 특성

  • 구현우 (한국세라믹기술원 광.디스플레이소재팀) ;
  • 임태영 (한국세라믹기술원 광.디스플레이소재팀) ;
  • 유설 (한국세라믹기술원 광.디스플레이소재팀) ;
  • 김진호 (한국세라믹기술원 광.디스플레이소재팀) ;
  • 이미재 (한국세라믹기술원 광.디스플레이소재팀) ;
  • 황종희 (한국세라믹기술원 광.디스플레이소재팀) ;
  • 신동욱 (한양대학교 신소재공학과)
  • Received : 2014.04.09
  • Accepted : 2014.05.30
  • Published : 2014.06.30
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Abstract

Translucent green colored opal glass was fabricated to substitute polycarbonate diffuser of LED lighting in order to solve the durability problem. Batch materials of green colored opal glass with the composition of calcium phosphate for opacifier and iron oxide for colorant were made and melted at $1550^{\circ}C$. As the results, translucent green colored opal glass was obtaind, which had excellent optical properties compare with nomal color glass for the diffuser of LED lighting, with no dazzling from direct light by high haze value over 90 % and low parallel transmittance value about 1 %. Therefore, it is concluded that this translucent green colored opal glass can be used for the glass diffuser materials of LED lighting with high heat resistance and high durability to substitute polycarbonate diffuser.

LED 조명등의 내구성 문제를 개선할 목적으로 폴리카보네이트 광확산판 소재를 대체하기 위한 반투명 녹색 컬러유백유리를 제조하였다. 녹색 컬러유백유리의 원료로는 유백제로서 인산칼슘을, 착색제로서 산화철을 사용하였고, $1550^{\circ}C$에서 용융하였다. 그 결과로서 LED 조명등의 광확산판으로서 90 % 이상의 높은 헤이즈 값과 1 %의 낮은 평행광 투과율을 가짐에 따라 직사광에 의한 눈부심이 없어 일반 컬러유리에 비해 매우 우수한 광학특성을 나타내는 반투명의 녹색 컬러유백유리가 얻어졌다. 따라서 녹색 컬러유백유리가 높은 열저항성과 내구성을 가지고 폴리카보네이트 광확산판을 대체하기 위한 LED 조명등의 광확산판 소재로 사용될 수 있을 것으로 판단되었다.

Keywords

References

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