Effects of forming and cooling temperature on the opaque properties of translucent opal glass for the glass diffuser of LED lighting (LED 조명용 반투명 유리 광확산판에 있어서 성형 및 냉각온도가 유백특성에 미치는 영향)

구현우; Tae-Young Lim (임태영); Jinho Kim (김진호); Mi-Jai Lee (이미재); Jonghee Hwang (황종희); SHIN, DONG WOOK (신동욱)

doi:10.6111/JKCGCT.2013.23.5.246

Effects of forming and cooling temperature on the opaque properties of translucent opal glass for the glass diffuser of LED lighting

Journal of the Korean Crystal Growth and Crystal Technology
Abbr : J. Korean Cryst. Growth Cryst. Technol.
2013, 23(5), pp.246-254
DOI : 10.6111/JKCGCT.2013.23.5.246
Publisher : The Korea Association Of Crystal Growth, Inc.
Research Area : Engineering > Materials Science and Engineering

구현우 ¹, Tae-Young Lim ¹, Jinho Kim ¹, Mi-Jai Lee ¹, Jonghee Hwang ¹, SHIN, DONG WOOK ²

¹한국세라믹기술원
²한양대학교

Accredited

ABSTRACT

Translucent opal glass was fabricated in order to substitute polycarbonate diffuser of LED lighting for the purpose of improving the durability problem. Calcium phosphate was used for the opacifier of opal glass and melted at 1550oC for 2 hrs in electric furnace. Because opal glass was made by phase separation and growth of opacifier grains during cooling procedure after forming of melted glass, we identified the effect of opaque properties by the change of forming and cooling temperature, as R.T. (room temperature), 850oC, 1100oC and 1200oC. As the results, it had excellent optical properties for the diffuser of LED lighting in the fabricated sample of forming and cooling at 1200oC, with no dazzling from direct light by high haze value over 82 % and low parallel transmittance value under 10 %. For the thermal properties, it had expressed thermal expansion coefficient of 6.352 × 10−6/oC and softening point of 839oC.

KEYWORDS

Opal glass, Diffuser, LED, Lighting, Optical properties

Citation status

* References for papers published after 2023 are currently being built.

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Journal of the Korean Crystal Growth and Crystal Technology 2023 KCI Impact Factor : 0.19

Effects of forming and cooling temperature on the opaque properties of translucent opal glass for the glass diffuser of LED lighting

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* References for papers published after 2023 are currently being built.

Journal of the Korean Crystal Growth and Crystal Technology 2023 KCI Impact Factor : 0.19

Effects of forming and cooling temperature on the opaque properties of translucent opal glass for the glass diffuser of LED lighting

ABSTRACT

KEYWORDS

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