A high-gain screen can be made as a sandwich of a hologram and a retroreflective screen material. When a hologram is used in front of the screen instead of the screen material alone, the position of high-brightness viewing can be moved to any desired angle rather than being directed back along the projection beam.

© 1981 Optical Society of America

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  1. An excellent description of these screens is found in T. Okoshi, Three Dimensional Imaging Techniques (Academic, New York, 1976).
  2. K. Vedar, M. D. Stoudt, “Retroreflection from spherical glass beads in highway pavement markings,” Appl. Opt. 17, 1859 (1978).
  3. E. W. Marchand, “Diffraction effects with lenticular projection screens,” J. Opt. Soc. Am. 65, 139 (1975).
  4. D. Meyerhofer, “Holographic and interferometric viewing screens,” Appl. Opt. 12, 2180 (1973).
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Figures (3)

Fig. 1
Fig. 1

Reflected screen radiance: (a) ordinary retroreflected beaded screen, (b) ordinary retroreflective screen with the diffraction lobe increased to contain the viewing angle, (c) holographic retroreflective screen sandwich in which the diffraction lobe is moved to the viewing angle.

Fig. 2
Fig. 2

Geometry for a simulator screen.

Fig. 3
Fig. 3

Reflected beams produced by holographic retroreflective screen sandwich: (a) incident beam undergoing diffraction at the hologram, (b) each incident beam being retroreflected and undergoing diffraction in the return direction at the hologram. (c) composite of all the return beams leaving the hologram–screen sandwich.

Equations (3)

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P θ = 0 = 6 η 2 4 η + 1 ,
P θ = ± ϕ = 2 η ( 1 2 η ) ,
P θ = ± 2 ϕ = η 2 .