Abstract：
New type desktop head-up display (HUD) can reduce visual fatigue and protect vision through long viewing distance. In this study, participants evaluated visual performance, fatigue, and discomfort of desktop HUD under two contrast polarity (N = 36) and five display luminance levels (N = 21). A positive polarity advantage was found over negative in visual fatigue and discomfort (p < .05). Statistically significant effect of luminance was found on visual performance, fatigue, and discomfort (p < .05). The calculated optimum display luminance by the proposed inverted-U fitted model was 153 cd/m2 under 300 lx, higher than that of traditional desktop displays. It is speculated that higher luminance is required to offset the reduction in contrast sensitivity due to smaller target angular size, which caused by longer viewing distance. These findings suggest that positive polarity and 153 cd/m2 can be used to improve performance and avoid fatigue and discomfort when utilising desktop HUD under 300 lx.
A visual ergonomic study was conducted on new type desktop HUD. With visual performance, fatigue, and discomfort as optimisation goals, positive polarity and 153 cd/m2 was recommended under 300 lx. Compared with traditional desktop displays, higher luminance was required in desktop HUD under the same illumination.
A visual ergonomic study was conducted on new type desktop HUD. With visual performance, fatigue, and discomfort as optimisation goals, positive polarity and 153 cd/m2 was recommended under 300 lx. Compared with traditional desktop displays, higher luminance was required in desktop HUD under the same illumination.
摘要：
新型台式平视显示器（HUD）可以通过长的观看距离减少视觉疲劳并保护视力。在这项研究中,参与者评估了视觉表现，疲劳,以及桌面HUD在两个对比度极性(N=36)和五个显示亮度等级(N=21)下的不适。在视觉疲劳和不适感方面发现正极性优于负极性（p<0.05）。亮度对视觉表现有统计学意义的影响，疲劳,和不适（p<0.05）。通过提出的倒U拟合模型计算出的最佳显示亮度在300lx下为153cd/m2，高于传统的桌面显示器。据推测，由于较小的目标角度大小，需要更高的亮度来抵消对比度灵敏度的降低，这是由更长的观看距离造成的。这些发现表明，正极性和153cd/m2可用于提高性能，避免疲劳和不适，当使用台式HUD低于300lx时。
对新型桌面HUD进行了视觉人体工程学研究。有了视觉表现，疲劳,和不适作为优化目标，正极性和153cd/m2建议在300lx下。与传统的桌面显示器相比,在相同的照度下，桌面HUD需要更高的亮度。
对新型桌面HUD进行了视觉人体工程学研究。有了视觉表现，疲劳,和不适作为优化目标，正极性和153cd/m2建议在300lx下。与传统的桌面显示器相比,在相同的照度下，桌面HUD需要更高的亮度。
