Takahiro Naitou
Nichia
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Publication
Featured researches published by Takahiro Naitou.
Japanese Journal of Applied Physics | 2003
Motokazu Yamada; Takahiro Naitou; Kunihiro Izuno; Hiroto Tamaki; Yoshinori Murazaki; Masatoshi Kameshima; Takashi Mukai
We fabricated a high-color-rendering, red-enhanced white-light-emitting diode (LED) using a new red phosphor and a short-wavelength YAG phosphor. When the new white-LED was operated at a forward-bias current of 20 mA at room temperature (RT), color temperature (Tcp), the general color rendering index (Ra) and luminous efficiency were 4670 K, 87.7 and 25.5 lm/W, respectively. Most of the color-rendering indexes (CRIs) of the new white-LED were larger than those of current white-LEDs, in which only YAG is used. In particular, the CRI-No.9 value, which shows the color reproduction in the red region, is improved from -2.5 to 62.6.
Archive | 2009
Hiroto Tamaki; Masatoshi Kameshima; Suguru Takashima; Motokazu Yamada; Takahiro Naitou; Kazuhiko Sakai; Yoshinori Murazaki
Archive | 2010
Hiroto Himaki; Suguru Takashima; Masatoshi Kameshima; Takahiro Naitou
Archive | 2004
Motokazu Yamada; Takahiro Naitou
Archive | 2005
Masatoshi Kameshima; Shoji Hosokawa; Suguru Takashima; Hiroto Tamaki; Takayuki Shinohara; Takahiro Naitou; Tomohisa Kishimoto
Archive | 2005
Masatoshi Kameshima; Shoji Hosokawa; Suguru Takashima; Hiroto Tamaki; Takayuki Shinohara; Takahiro Naitou; Tomohisa Kishimoto
Archive | 2004
Takahiro Naitou; Motokazu Yamada
Archive | 2004
Motokazu Yamada; Takahiro Naitou
Archive | 2003
Hiroto Tamaki; Suguru Takashima; Masatoshi Kameshima; Takahiro Naitou
Archive | 2003
Hiroto Tamaki; Suguru Takashima; Masatoshi Kameshima; Takahiro Naitou
