Patent ID: 7905600
Filing Date: 2011-03-15
Classification: G02B,H04N

Abstract:
1. An imaging unit, for a projection engine for or with reflective display devices, comprising: a first spectral selective splitting and/or illumination part to a second spectral and polarization selective splitting and/or illumination part to said second spectral and polarization selective splitting and/or illumination part comprises a dichroic beam splitting device and first and second polarization selective or polarizing beam splitting devices, a wavelength selective polarizer is provided between a second surface of said second polarization selective or polarizing beam splitting device and said dichroic beam splitting device, said wavelength selective polarizer is configured to transmit a p-polarized part of said second partial image, said wavelength selective polarizer is configured to transmit an s-polarized part of said third partial image, and said wavelength selective polarizer is configured to block a p-polarized part of said third partial image.