| 摘要 |
Through the test of the differences of visual fatigue and comfort
of 20 users using mobile phone screens of horizontally polarized
models, vertically polarized models and circularly polarized
models in the same indoor office environment and illumination
conditions, we study whether there are significant differences of
influences of mobile phone displays with different polarized light.
The test task mainly adopts the visual search task, together with
the flash fusion frequency, visual fatigue perception scale and
comfort questionnaire before and after the test. Meanwhile,
during the whole test process, the EEG of the subjects was
monitored. The test result showed that, under the confidence
level of 95%, there was a significant difference of the flicker
fusion frequency decreasing range between the circularly
polarized mobile phone display prototypes and linearly polarized
light mobile phone display prototype. The decline range of flicker
fusion frequency under the condition of circularly polarized light
mobile phone display was lower than that of linearly polarized
light mobile phone display prototype. EEG evaluation results
showed that in the 95% confidence level, there was a significant
difference of the attention index decreasing range between the
circularly polarized mobile phone display prototypes and
vertically polarized light mobile phone display prototype. The
decline range of attention index under the condition of circularly
polarized light mobile phone display was lower than that of
vertically polarized light mobile phone display prototype. The
results of the study showed that, at the 95% confidence level,
there was a significant difference in the degree of visual fatigue
caused by circularly polarized light mobile phone display and that caused by linearly polarized mobile phone display. The
visual fatigue degree caused by the circularly polarized light
mobile phone display was lower than that of linearly polarized
light mobile phone screen. From the subjective comfort
evaluation results, subjective comfort of the circularly polarized
mobile phone display was the best, followed by the horizontally
polarized mobile phone screen. The vertically polarized light
mobile phone screen was the worst, but the difference between
the three has not yet reached significant level. |