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We report the enlargement of holograms by illuminating with a halogen lamp from the small format of 3 5mm. A special configuration is employed to concentrate the luminous energy on the projection lens. An enlargement factor of 20 was obtained in a 75cm x 114cm holographic screen.
José J. Lunazzi
"Enlarging holograms under white light", Proc. SPIE 2778, 17th Congress of the International Commission for Optics: Optics for Science and New Technology, 27786A (1 September 1996); https://doi.org/10.1117/12.2299109
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José J. Lunazzi, "Enlarging holograms under white light," Proc. SPIE 2778, 17th Congress of the International Commission for Optics: Optics for Science and New Technology, 27786A (1 September 1996); https://doi.org/10.1117/12.2299109