Patent ID: 7841745

Claim:
An image display apparatus comprising: an image forming device having a plurality of pixels arranged in a two-dimensional matrix; a collimating optical system collimating light emitted from the pixels of the image forming device; and an optical device receiving the light collimated by the collimating optical system into a plurality of directional rays in different traveling directions, guiding the light therethrough, and outputting the light, wherein the optical device includes a light-guiding plate propagating thereinside the light received thereby with total reflection and outputting the propagated light; a first optical member reflecting or diffracting the light received by the light-guiding plate so as to cause the light received by the light-guiding plate to be totally reflected inside the light-guiding plate; and a second optical member causing the light propagated with total reflection inside the light-guiding plate to emerge from the light-guiding plate, and wherein, when the light emitted from a pixel located farthest from a center of the image forming device and passing through a nodal point of the collimating optical system near to the image forming device is incident on the collimating optical system at an angle of θ 1 , and when the light emitted from a pixel located at the center of the image forming device and passing through the nodal point of the collimating optical system near to the image forming device is incident on the light-guiding plate at an angle of θ 2 , a condition of θ 2 >θ 1 is satisfied.