Evaluation Model of VDT Visual Comfort Based on Pupil Diameter

Huijuan Tian; Tao Guan; Minpeng Cai; Yang Hu

doi:10.3788/LOP57.153301

Journals >Laser & Optoelectronics Progress >Volume 57 >Issue 15 >Page 153301 > Article

Laser & Optoelectronics Progress
Vol. 57, Issue 15, 153301 (2020)

Evaluation Model of VDT Visual Comfort Based on Pupil Diameter

Huijuan Tian^1、2、*, Tao Guan^2、3, Minpeng Cai^2、3, and Yang Hu^1、2

Author Affiliations

¹School of Electronics and Information Engineering, Tiangong University, Tianjin 300387, China

²Engineering Research Center of Ministry of Education on High Power Solid State Lighting Application System, Tianjin 300387, China

³Tianjin Key Laboratory of Advanced Electrical Engineering and Energy Technology, School of Electrical Engineering & Automation, Tiangong University, Tianjin 300387, China;

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DOI: 10.3788/LOP57.153301 Cite this Article Set citation alerts

Huijuan Tian, Tao Guan, Minpeng Cai, Yang Hu. Evaluation Model of VDT Visual Comfort Based on Pupil Diameter[J]. Laser & Optoelectronics Progress, 2020, 57(15): 153301 Copy Citation Text

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Fig. 1. Experimental schematic. (a)Real scene; (b) schematic of experimental scene

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Fig. 2. Subjective evaluation of visual comfort and pupil diameter distribution in different subjects

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Fig. 3. Normalized pupil diameter distribution of different gender groups

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Fig. 4. Normalized pupil diameter distribution of different eyes habits

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Fig. 5. Normalized pupil diameter distribution of whether glasses-worn

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Fig. 6. Normalized pupil diameter distribution of all subjects (confidence interval is 95%)

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Parameter	Value
Vertical illuminance /lx	135.8333/153.0667/162.8667
CCT(lighting environment) /K	5200
Luminance(display) /(cd/m²)	23.05/64.90/104.70/144.73/159.89
CCT(display) /K	6600

Table 1. Light environment parameters

Rating scale	Description
1	Working environment is too dark and difficult to accept (it is difficult to see the screen display)
2	Working environment is too dark, but it is acceptable (you can see the screen display)
3	Working environment is comfortable and you like it (screen display content can be clearly seen, and it is not easy to fatigue when working a long time)
4	Working environment is too bright, but it is acceptable (screen display content can be clearly seen, and the eyes are prone to discomfort for long-time working)
5	Working environment is too bright, or even glaring (screen display content can be clearly seen, and the eyes are prone to extreme discomfort for long-time working)

Table 2. Subjective evaluation of visual comfort

Parameter	Number
Gender	Male (6)/female (2)
Eyes habit	Yes(4)/no(4)
Glasses-worn	Yes (5)/no (3)

Table 3. Information statistics of subject

Parameter		Gender		Eyes habit		Glasses-worn
Parameter		Male	Female	Yes	No	Yes	No
ANOVA(P value)		0.000	0.000	0.000	0.000	0.000	0.000
2-sampleT-test(P value)	2-change3-change	0.000	0.000	0.000	0.000	0.000	0.000
2-sampleT-test(P value)	3-change4-change	0.000	0.036	0.001	0.001	0.000	0.030

Table 4. Statistical analysis results

Huijuan Tian, Tao Guan, Minpeng Cai, Yang Hu. Evaluation Model of VDT Visual Comfort Based on Pupil Diameter[J]. Laser & Optoelectronics Progress, 2020, 57(15): 153301

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