LED Flat Panel Capable of Seamless Connection for Use in Lighting

• Mochizuki Keiichi

  Keio University Nittoh Kogaku K.K.

• Sakurai Kenji

  Nittoh Kogaku K.K.

• Shinohara Yoshinori

  Nittoh Kogaku K.K.

• Tagaya Akihiro

  Keio University

• Koike Yasuhiro

  Keio University

抄録

We propose a light-emitting diode (LED) flat lighting panel that is capable of seamless connection by optimizing the shape of the optical elements, as well as the concentration of the scattering particles used in the diffuser material. The LED flat lighting panels that we develop can be connected to other panels while maintaining a uniformity of 90% throughout the entire surface. The results of subjective experiments reveal that the seams between the connected LED flat panels are virtually unnoticeable. We also discuss the optimal lighting designs for using the LED flat lighting panels as bracket lighting and ceiling lighting by measuring their primary optical characteristics. In particular, the unified glare rating of the seamless panel is 19.4, which corresponds to the minimum level of uncomfortable glare. Moreover, the seamless panel exhibits a luminous efficiency as high as 79.6 lm/W, which satisfies Energy Star requirements. These evaluations show that the LED flat panel is capable of providing comfortable space and lighting designs for architecture in an environmentally friendly manner.

収録刊行物

• Journal of Light & Visual Environment

  Journal of Light & Visual Environment 40 (0), 28-35, 2017

  一般社団法人 照明学会

キーワード

• LED
• Seamless connection
• Flat lighting panel
• highly scattered optical transmission polymer

詳細情報

• CRID: 1390282679594056960
• NII論文ID: 130005509519
• DOI: 10.2150/jlve.ieij150000571
• ISSN: 13498398
• ISSN: 03878805
• Web Site: https://www.jstage.jst.go.jp/article/jlve/40/0/40_IEIJ150000571/_pdf
• 本文言語コード: en
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