| Project/Area Number |
24500937
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
General human life sciences
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| Research Institution | Osaka Municipal Technical Research Institute |
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Principal Investigator |
YOSHIMURA YURIKA 地方独立行政法人大阪市立工業研究所, 生物・生活材料研究部, 研究室長 (00416314)
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| Co-Investigator(Kenkyū-buntansha) |
OHE Takeru 地方独立行政法人大阪市立工業研究所, 生物・生活材料研究部, 研究員 (10416315)
SAITO Mamoru 地方独立行政法人大阪市立工業研究所, 環境技術部, 研究室長 (20416358)
KITAGUCHI Katsuhisa 地方独立行政法人大阪市立工業研究所, 環境技術部, 研究員 (30416359)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2014: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
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| Keywords | LED光源 / 演色性 / 分光分布 / 色差 / 標準光源 / 拡散透過率 / 該当なし |
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| Outline of Final Research Achievements |
A pseudo-white LED is composed of a blue light emission diode and a yellow fluorescent material, and the spectrum is different from the other general white light sources. It causes the problem of color shift of object surface color under the LED illumination.
In order to solve the problem, the new color simulation system for LED illuminant was studied. We calculate the color rendering properties of pseudo-white LED lamps with various kinds of hue,value and chroma of object surface colors, and investigate the relationship between the color rendering properties of pseudo-white LED and the colorimetry L*a*b* values which match with human visual sence. From the results, the pseudo-white LED has a large amount of special color shift, depending on the hue of the surface color. It arises from the peak strength and wavelength of the spectral distribution of the pseudo-white LED.
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