Patent ID: 9389430
Filing Date: 2016-07-12
CPC Classification: G02B,G02F

Claim Text:
1. An image display apparatus comprising: an image display panel; a backlight device disposed on a back surface side of the image display panel; and a light deflection element disposed between the image display panel and the backlight device, wherein the light deflection element comprises: at least one of an interface between the first optical element and the second optical element and an interface between the second optical element and the third optical element is an aspheric surface, the aspheric surface has an optical power that compensates for enlargement of the emitted light which is caused by refractive index distribution caused when a voltage is applied to the second optical element, the first optical element is located on a backlight device side and the third optical element is located on an image display panel side, an image signal for a right eye and an image signal for a left eye to which a parallax is provided are alternately inputted into the image display panel in a time division manner, and the backlight device comprises: