VDM-1800 represents the first optical testing equipment for virtual displays (VR/AR) in China. This equipment integrates high-end components, including a spatial angular motion mechanism, an optical imaging detector, a spectral radiance measurement instrument, and a high-speed photometry measurement instrument. It simulates the precise alignment of the human eye's pupil with the virtual display device's eye box, as well as the spatial perception of virtual images by the retina and the adjustment of focus for virtual images at various distances by the eyes.