Is It Smart to Use Smartphones to Measure Illuminance for Occupational Health and Safety Purposes?
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This study reports on the accuracy of smartphone-based illuminance measurement applications and whether they may be employed for occupational lighting measurements. A sample of nine mobile phones on three platforms (Android, iOS and Windows) was assembled and 14 apps were selected for testing. Testing conditions comprised four pre-specified illuminance levels (300 lx, 500 lx, 750 lx and 1000 lx) accomplished with three light sources presenting different Correlated Color Temperatures (2700 K; 4000 K; 6500 K). The results reveal extremely variable and sometimes large deviations from the reference levels and suggest smartphones are not appropriate for use in occupational lighting assessments.
KeywordsLight Measurement Applications Mobile phones Accuracy
We would like to thank those who volunteered their smartphones for testing.
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