Eye‐safety analysis of phase‐only holographic projection systems | Zendy

Buckley Edward | Zendy

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Eye‐safety analysis of phase‐only holographic projection systems

Author(s) -

Buckley Edward

Publication year - 2011

Publication title -

journal of the society for information display

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.578

H-Index - 52

eISSN - 1938-3657

pISSN - 1071-0922

DOI - 10.1889/jsid19.11.723

Subject(s) - projector , holography , liquid crystal on silicon , computer science , projection (relational algebra) , holographic display , optics , phase (matter) , computer generated holography , computer graphics (images) , computer vision , artificial intelligence , physics , liquid crystal , algorithm , quantum mechanics

— Recently, laser‐safety analyses have been presented for scanned‐beam and LCOS imaging projectors. A third class of projection technology, based on the properties of phase‐only diffraction, is differentiated from scanned‐beam and LCOS counterparts in its ability to provide a significantly higher effective luminous flux for video style images. In this paper, this desirable property is recognized by the definition of the “video lumen” and a detailed design fora hypothetical holographic projector and corresponding laser safety analysis is presented. As in the case of conventional amplitude‐modulating LCOS projectors, a holographic projector is capable of delivering several hundred white lumens in Class 2; an appropriately specified holographic projector can also provide several tens of video lumens while maintaining a Class 1 classification.

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