Controlled diffraction efficiency far field viewing devices

Details Controlled diffraction efficiency far field viewing devices Controlled diffraction efficiency far field viewing devices

2007-10-02

2007-10-02

Boutsikaris, Leonidas (Department: 2872)

Optical: systems and elements

Holographic system or element

Head up display

C359S009000, C351S051000

Reissue Patent

active

10857803

ABSTRACT:
This invention pertains to the design of optimized far field viewing devices that simultaneously produce bright far field holographic light patterns and achieve good see-through performance to present a well focused scene. A far field transmission hologram recorded on a transparent substrate has regions having high diffraction efficiency juxtaposed with regions having low diffraction efficiency. The high diffraction efficiency regions contribute to production of bright far field holographic light patterns, whereas the low diffraction efficiency regions contribute to see-through performance.

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Saxby, “Practical Holography” Prentice Hall, 1998, pp. 209,211.

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