書誌事項
- タイトル別名
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- The subjective appraisal of the permissible luminance of the light source reflecting on the papers
- インサツ シメン ニ ハンシャ グレア オ ショウジテ イル コウゲン ノ キ
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説明
Reduction of reflected glare on such visual tasks as works on printed papers in an office is one of the most important factors of office lighting designs.<BR>Conventional evaluating method based on the contrast of printed characters to thebackground paper is complicated for practical lighting design works.<BR>Experimental studies have been carried out to find out a practical design guide of permissible luminance limits of reflected light source related to the illuminance on a paper.<BR>As objects for visual tasks, printed papers in six reflectance combinations of characters and papers by white, gray and black were adopted.<BR>Authors adopted the total feeling levels of the permissible reflection including the legibility of the characters as the criteria.<BR>The results are:<BR>(1) As far as the experimental condition using 40W fluorescent lamp lightng fittings, reflection of light source is permissible for a wood free paper and a mechanical printing paper.<BR>(2) In the most general case of black characters on a white art paper, the practical guide of the permissible luminance for 500 lx illuminance design would be 1800cd/m2 for uniform luminance light source, 4500cd/m2 for non-uniform luminance light source, in terms of category “Agreeable”.
収録刊行物
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- 照明学会誌
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照明学会誌 75 (2), 92-99, 1991
一般社団法人 照明学会
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詳細情報 詳細情報について
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- CRID
- 1390282679061189888
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- NII論文ID
- 130006764427
- 40004320281
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- NII書誌ID
- AN00268860
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- ISSN
- 1349838X
- 21851506
- 00192341
- http://id.crossref.org/issn/00192341
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- NDL書誌ID
- 3704174
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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