Corning Incorporated

Corning Precision Lens, Inc.

Alexander Galpern

Brahim Dahmani

Vitaly I Sukhanov

A holographic device, which has first and second roughly coplanar and superposed holograms, which are illuminated by the same non-polarized light beam with at least first and second spectral compositions, the holograms each being recorded in a manner such that in its middle, the axis of the diffracted beam is perpendicular to the direction of the incident beam in this medium, the diffracted beams forming first and second angularly separated light beam with the same polarization, and having different spectral compositions.

Holographic device for formation of colored, polarized and angularly separated light beams and video image projector which utilizes it

The device includes a) flat mirror (,) formed by adjacent areas (,) that are alternately transparent and reflecting with parallel and straight lines of demarcation, b) identical first (,) and second (,&prime;) reflection holograms, each delivering at least one diffracted beam with a predetermined spectral composition, c) illuminating source (,) for illuminating said holograms (,&prime;) at normal incidence by the intermediary of said mirror (,), said holograms (,&prime;) being arranged symmetrically with respect to the plane of said mirror (,) in such a way as to be illuminated by the intermediary of transparent (,) and reflecting (,) strips, respectively, of mirror (,), and in such a way that the beams diffracted by the first and second holograms are reflected and transmitted, respectively, by reflecting (,) and transparent (,) strips, respectively, of mirror (,), in order to be combined into a continuous light beam with said spectral composition.

Growing community of inventors

St. Petersburg, Russia

Alexander Galpern