Evaluating the Impact of VR Headset Microclimate Temperature on Perceptions of Thermal Discomfort and Forehead Temperature

Abstract

Modern head mounted displays are high performance wearable computers. However, the effect of headset temperature on user thermal discomfort is rarely discussed. Here, user ratings of thermal discomfort during a VR game across three different thermal conditions between 28° – 43° C was measured. Perceived thermal discomfort ratings, administered every 12-minutes, decreased over time and as the HMD microclimate tem-perature (MCT) increased. Additionally, thermal discomfort increased more quickly for MCTs above 38° C. The HIGH temperature condition (MCT > 38° C) was rated uncomfortable after 24-mintues. Post- – pre-VR forehead temperatures in both the MID and HIGH conditions were significantly higher than in the LOW condition. The current findings suggest users perceive MCT temperatures above 38° C as uncomfortable. To maximize thermal comfort for extended use manufacturers of VR headsets should limit MCT to < 38° C.