35-4:Invited Paper: A Wide Field of View Head Mounted Display and Its Effects on Search Performance in Augmented Reality

Abstract

Developing a wide field of view (FOV) optical see-through (OST) head mounted display (HMD) has been a challenge for decades. Naturally, the actual effects of a wide FOV OST display on the perception of augmentations have not been widely studied either. We previously proposed a wide FOV head mounted projective display (HMPD) using a hyperboloidal semitransparent mirror and a semi-transparent retroreflective screen, called the wearable HHMPD [1]. Main features of the wearable HHMPD include a horizontal FOV of 110 degrees and a visual acuity of around 20/200. Using the wearable HHMPD, we then conducted a user study investigating the effects of a wide FOV in augmented reality (AR) [2]. Results show that target discovery rates consistently drop with in-view labelling and increase with in-situ labelling as display angle approaches 100 degrees of FOV. Past this point, the performances of the two view management methods begin to converge, suggesting equivalent discovery rates at approximately 130 degrees of FOV. Results also indicate that users exhibited lower discovery rates for targets appearing in peripheral vision, and that there is little impact of FOV on response time and mental workload.