Diffraction optics diffusing screen laminate for full color...

Details Diffraction optics diffusing screen laminate for full color... Diffraction optics diffusing screen laminate for full color...

G - Physics

02

B

88/121, 88/0.14

G02B 5/32 (2006.01) G02B 5/00 (2006.01) G02B 5/02 (2006.01)

Patent

CA 1320366

DIFFRACTION OPTICS DIFFUSING SCREEN LAMINATE FOR FULL COLOR ON-AXIS VIEWING ABSTRACT OF THE DISCLOSURE An optical screen module for full-color, on-axis viewing is described. The module has a transmission holographic optical element, a louver filter, and a diffraction optics diffusion screen. Input light is diffracted off-axis by the transmission holographic element, passed through the louver filter and rediffracted on-axis by the diffusion screen The module can handle full-color light because the dispersion in the transmis- sion hologram is compensated by that in the diffusion screen. The louver filter blocks the undiffracted zero- order light while allowing the light diffracted by the transmission hologram to pass through.

604210

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