Optical: systems and elements – Holographic system or element – With optical waveguide
Reexamination Certificate
2007-04-17
2007-04-17
Boutsikaris, Leonidas (Department: 2872)
Optical: systems and elements
Holographic system or element
With optical waveguide
C359S566000, C359S568000, C359S576000, C359S015000
Reexamination Certificate
active
11011480
ABSTRACT:
An exit pupil extender wherein the relative amount of different color components in the exit beam is more consistent with that of the input beam. In order to compensate for the uneven amount in the diffracted color components in the exit beam, the exit pupil extender, comprises a plurality of layers having additional diffraction gratings so as to increase the amount of diffracted light for those color components with a lower amount. Additionally, color filters disposed between layers to reduce the diffracted light components with a higher amount.
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