Research Article
Development and Performance Evaluation of Light Shelves Using Width-Adjustable Reflectors
Table 2
Recommended illumination levels.
| | Task grade | Recommended levels of illumination | Minimum allowed illumination (lx) | Standard allowed illumination (lx) | Maximum allowed illumination (lx) |
| | General | IES (USA) | 500 | 750 | 1000 | | JIS Z 9110 (Japan) | 300 | 500 | 750 | | KS A 3011 (Republic of Korea) | 300 | 400 | 600 | | Simple | IES (USA) | 200 | 300 | 500 | | JIS Z 9110 (Japan) | 150 | 200 | 300 | | KS A 3011 (Republic of Korea) | 150 | 200 | 300 |
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