Derivation of Optimum Values of External Transmittance and Display Transmittance by Optical See-Through HMD Simulation Using VR

Abstract

Characteristic of the optical see-through HMD is that the characters and images to be displayed are transparent and the other side can be seen. Due to the characteristics, the display of the HMD may be difficult to see depending on the real space (outside world) that is the background of the display. Because of that problem, in addition to research on increasing the opacity of HMD display, research on changing the transmittance of the external environment, which is the background of HMD display, is being conducted. Then, by combining them, we decided to investigate when each condition makes the HMD display easier to see. However, it is difficult to evaluate the actual optical see-through HMD by changing the display and the transmittance of the outside world. Therefore, we decided to investigate the optimal combination of these by simulating an optical see-through HMD in a VR environment, and changing the transmittance of the HMD display and the external environment in it.