Patent ID: 7377649

Claim:
A projector arrangement, comprising: a first, a second, and a third image generating means; a spectral splitting and recombination unit (SSR); and an optical projection unit, wherein said first, said second, and said third image generating means are arranged to generate a first, a second, and a third partial image, respectively, said SSR is arranged to receive primary illumination light, comprising spectrally distinct components, said SSR comprises a first and a second polarizing device, said polarizing device comprising at least one of polarization selective device and polarizing beam splitting device, said SSR and said first polarizing device are arranged to receive said primary illumination light through a single and common face of said first polarizing device and said SRR, a said SRR further comprises a wavelength selective optical element (WSOE) between said first polarizing device and said second polarizing device, said WSOE is located between a second surface of said first polarizing device and a first surface of said second polarizing device in a connected optical path between these entities, said WSOE is arranged: to receive said first spectral component of the primary illumination light an s-polarized polarization state in and to reflect said first light component, thereby changing its s-polarized polarization state into a p-polarized polarization state, and to receive said second spectral component of the primary illumination light in an s-polarized polarization state and to transmit said light component thereby changing its s-polarized polarization state into a p-polarized polarization state, and to receive said third spectral component of the primary illumination light in an s-polarized polarization state and to transmit said light component thereby leaving its s-polarized polarization state unchanged, and wherein the main or the entire functionality of said SSR is completely realized by said first polarizing device, said second polarizing device and said WSOE.