LED 조명용 반투명 유백유리 Diffuser 조성 개발 및 특성open accessDevelopment and characterization of translucent opal glass for diffuser of LED lighting
- Other Titles
- Development and characterization of translucent opal glass for diffuser of LED lighting
- Authors
- Ku, Hyun-Woo; Lim, Tae-Young; Hwang, Jonghee; Kim, Jin-Ho; Lee, Mi-Jai; Shin, Dong Wook
- Issue Date
- Dec-2012
- Keywords
- Diffuser; LED; Lighting; Opal glass; Optical properties
- Citation
- Korean Journal of Materials Research, v.22, no.12, pp.650 - 657
- Indexed
- SCOPUS
KCI
- Journal Title
- Korean Journal of Materials Research
- Volume
- 22
- Number
- 12
- Start Page
- 650
- End Page
- 657
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/163986
- DOI
- 10.3740/MRSK.2012.22.12.650
- ISSN
- 1225-0562
- Abstract
- For the purpose of improving the durability problem, translucent opal glass was fabricated as a substitute for the polycarbonate diffuser of LED lighting. Calcium phosphate was used as an opacifier of opal glass and melted in an electric furnace. The opaque effect was identified according to the change of the cooling procedure. As results, translucent opal glass was obtained by the melting of a batch with a composition of 3.8% calcium phosphate at 1550°C for 2 hrs and then the cooling of the material in the furnace. For the cooling condition of the glass sample, HTCG (High Temperature Cooled Glass) was found to have better optical properties than LTAG (Low Temperature Annealed Glass). It had excellent optical properties for a diffuser of LED lighting, with no dazzling from direct light due to its high haze value of over 99% and low parallel transmittance value of under 1%. For the thermal properties, it had an expressed thermal expansion coefficient of 5.7 × 10-6/ °C and a softening point of 876°C; it also had good thermal properties such as good thermal shock resistance and was easy to apply to the general manufacturing process in the forming of glass tubes and bulbs. Therefore, it is concluded that this translucent opal glass can be used as a glass diffuser material for LED lighting with high heat resistance and high durability; this material is suitable as a substitute for polycarbonate diffusers.
- Files in This Item
-
- Appears in
Collections - 서울 공과대학 > 서울 신소재공학부 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/163986)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.