書誌事項
- タイトル別名
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- Improving Nighttime Visibility of LED Type Outdoor Displays-Optimization of Luminance Contrast by Feeble Background Lighting-
- LEDシキ オクガイガタ ヒョウジ ソウチ ニ オケル ヤカンシニンセイ ノ コウジョウ ビジャク ハイケイコウ ニ ヨル キド コントラスト ノ サイテキカ
- -Optimization of Luminance Contrast by Feeble Background Lighting-
- -微弱背景光による輝度コントラストの最適化-
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説明
The nighttime visibility of LED type outdoor display gets deteriorated due to the glare in the case of high luminance, while in the case of low luminance the visibility is enhanced, but not very conspicuous. The glare is caused by the high contrast. Therefore we inferred that the visibility may be improved by lowering the excessively high contrast. We can control the contrast by feeble lighting of the LED’s of the background part which are usually unlighted. We conducted a series of experiments to investigate the effect of the background lighting on the visibility. We found that the visibility is improved for a certain range of contrast, 4:1 through 100:1. It is suggested that for the above range of contrast, the glare is suppressed and yet the displays conspicuous.
収録刊行物
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- 電気学会論文誌. A
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電気学会論文誌. A 124 (11), 954-960, 2004
一般社団法人 電気学会
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詳細情報 詳細情報について
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- CRID
- 1390001204593929216
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- NII論文ID
- 10013713055
- 20000812919
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- NII書誌ID
- AN10136312
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- ISSN
- 13475533
- 03854205
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- NDL書誌ID
- 7137573
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可