Patent ID: 7841745
Filing Date: 2010-11-30
Classification: G02B

Abstract:
1. 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