Universal Journal of Public Health Vol. 11(6), pp. 954 - 960
DOI: 10.13189/ujph.2023.110620
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Lighting Intensity Monitoring at Inspection Workstations in Electronics Assembly and Manufacturing

Sunisa Chaiklieng *
Department of Environmental Health, Occupational Health and Safety, Faculty of Public Health, Khon Kaen University, Thailand


The working processes of electronics assembly and manufacturing include machine operation, assembly and fine work inspection of products with a microscope. This study aimed to assess lighting intensity at the inspection, operation, and assembly workstations of the electronics assembly work process. A total of 167 electronics workstations in one electronics assembly and manufacturing site were analyzed. The measurement of lighting intensity was performed with a lux meter by spot sampling, and a three-zone measurement method was used. The zones were zone 1 (eye-focusing zone), zone 2 (within an arm's length) and zone 3 (outside an arm's length). Zone 2 and zone 3 refer to the materials pick-up distance next to zone 1 and zone 2, respectively. Four types of job function, i.e., machine operation, assembly of parts, and two inspection types, namely, moderate fine work under a lamp or with a monitor/ profile projector and very fine work under a microscope, were measured. The results show that insufficient lighting intensity was found in the highest proportion in very fine product inspection with a microscope, followed by inspection with a monitor/ profile projector. Insufficient lighting intensity was mostly identified within an arm's length (zone 2), followed by outside an arm's length (zone 3), when the eye-focusing zone (zone 1) was adjusted to >2,000-5,000 lux (81.12%), followed by the site of inspection with a monitor (64.29%). The light monitoring method will be useful for identifying solutions to lighting requirements regarding future eye-focusing zone adjustment of fine product inspection workstations.

Lighting Intensity, Inspection, Eye Focusing, Electronics

Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Sunisa Chaiklieng , "Lighting Intensity Monitoring at Inspection Workstations in Electronics Assembly and Manufacturing," Universal Journal of Public Health, Vol. 11, No. 6, pp. 954 - 960, 2023. DOI: 10.13189/ujph.2023.110620.

(b). APA Format:
Sunisa Chaiklieng (2023). Lighting Intensity Monitoring at Inspection Workstations in Electronics Assembly and Manufacturing. Universal Journal of Public Health, 11(6), 954 - 960. DOI: 10.13189/ujph.2023.110620.