Patent ID: 9740009
Date: 2017-08-22
CPC Classifications: G02B

Claim:
1. A head mounted display comprising: an image display having an image light generator that generates image light based on image data and outputs the image light, the image display not only allowing a user who wears the image display around user's head to recognize the image light in the form of a virtual image but also transmitting a surrounding scene; a luminance processor that identifies luminance at each pixel of the virtual image; an eye imaging camera that generates images of the user's eyes; and a controller that (1) determines the uses line-of-sight from the images of the user's eyes, (2) generates an index based on (a) the luminance of each pixel of the virtual image, (b) the user's line-of-sight and (c) illuminance of the transmitted surrounding scene, (3) compares the index with a first threshold set in advance and (4) causes the image light generator to generate display image light that differs from the initial image light in that at least part of the luminance thereof is changed based on a result of the comparison.