Planar holographic optical device

Details Planar holographic optical device Planar holographic optical device

1997-06-03

1999-10-12

Henry, Jon

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 19, 359 34, G02B 518, G02B 532, G02B 2744

Patent

active

059662239

ABSTRACT:
A holographic optical device having a light transmissive substrate with a first holographic optical element carried by the substrate, and a second holographic optical element also carried by the substrate but laterally offset from the first holographic optical element. The first holographic optical element diffracts waves from each data point in a display source into a collimated plane wave such that the plane wave is trapped inside the substrate by internal reflection, and the first holographic optical element also corrects field aberrations over the entire field of view by being recorded using at least one aspheric wavefront. The second holographic optical element diffracts the trapped plane waves out of the substrate.

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