Patent ID: 8654443
Filing Date: 2014-02-18
Classification: G02B,G03B,H04N

Abstract:
1. An image display apparatus for displaying images, comprising: a transmission type display panel for displaying the images; a reflection unit disposed at a back side of the transmission type display panel, and including an elliptical mirror which corresponds to part of an arc of an ellipse and has a reflecting surface shaped symmetrical across a center line in plan view, one focus of the ellipse being set between the back side of the transmission type display panel and the reflecting surface, and the other focus of the ellipse being set between both eyes of an observer; and a light source unit including a pair of light sources arranged adjacent the one focus of the reflection unit, attached adjacent the back side of the transmission type display panel in a position to emit light to the reflecting surface, opposed to each other across the one focus of the reflection unit in plan view, and arranged between the part of the arc of the ellipse and the display panel; wherein the light source unit includes a lower light source unit having the pair of light sources, the pair of light sources being a lower first light source and a lower second light source attached to a lower portion of the transmission type display panel; and wherein the apparatus further comprises: an image output device for alternately outputting a first image and a second image to the transmission type display panel; and a light source control device for switching on the lower first light source when the first image is outputted, and switching on the lower second light source when the second image is outputted.