Shieh and Lin showed the effect of ambient illumination and color on visual performance, using visual display terminal (VDT) screens color performance and visual fatigue were less than illumination and color combined, and working on liquid crystal display (LCD) screens was less comfortable because of the slow accommodative velocity of users indirectly affecting visual comfort. Similarly, using various colors of LED lamps, Eo et al explored the effect of classroom lighting upon student psychology the mood of music and art rooms were altered by different colors, and this illumination variance improved students’ creativity (LED lamps created a more positive feeling than fluorescent lamps). Lin in et al studied the effect of illumination and chromatic contrast on reading performance they found that white light was associated with better reading performance than yellow light and, thus, that light intensity, rather than color, significantly affected reading. Mott et al conducted a quasi-experiment, showing that, compared to natural lighting conditions, increasing the quality of artificial light positively affected students’ oral reading performance in classrooms. Color chromaticity also changes with LED illumination. However, Nagy et al showed that differences in the spectral distribution of the ambient illumination also affect visual tasks like color and when the stimulants changed and presented on the monitor screen, they adapted to the ambient illumination. Moreover, the chromaticity of light seems to influence visual stimuli Yamagishi et al compared two groups (young and elderly subjects), and found that visual performance, mood, and subjects’ perception of comfortable reading and visual task performance improved under artificial LED lighting.
Berman et al provided evidence that scotopic rich fluorescent source illumination reduces pupil size and improves visual acuity however, the effect was only measurable with low-contrast briefly-presented stimuli. Light emitting diode (LED) bulbs are claimed to produce the same light as other bulbs, whilst saving power and being both energy- and cost- efficient there is little consideration regarding their impact on visual comfort or ocular health.
#ILLUMINATION LIGHTING ROCKVILLE CENTER CODE#
However, this is still a conservational issue and there are some concerns among the general public regarding the appropriate light required for specific tasks.Īccording to Indian Standard Code of Practice for Industrial lighting suggests Reading and writing should be used under 300-400 lux and National Electrical Code (NEC) 2011 Indian standards suggests required luminance for reading 300-700 lux followed by Central Building (CBRI) Research Institute standards of India suggests 200-500 lux for reading task.
Different illumination sources have been suggested as the best standard for reading.
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