Holographic method and apparatus using incoherent light

Details Holographic method and apparatus using incoherent light Holographic method and apparatus using incoherent light

1989-12-22

1990-12-11

Arnold, Bruce Y.

350 375, 350 377, 350 381, G03H 116

Patent

active

049765043

ABSTRACT:
A method of generating a quasi-complex hologram using incoherent light and a conoscope system comprising a birefringent crystal (30) inserted between two circular polarizers (10, 20), the method comprising the following steps: (i) recording a plurality of different conoscopic holograms of the same object without relative displacement thereof and with respective different polarization configurations; and (ii) combining the various conoscopic holograms obtained in this way in order to remove the bias and the conjugate image. The invention also relates to a device for implementing the method.

REFERENCES:
patent: 3536371 (1970-10-01), Post
patent: 3837725 (1974-09-01), Bricot et al.
patent: 4036552 (1977-07-01), Lee et al.
patent: 4095875 (1978-06-01), Lee et al.
patent: 4602844 (1986-07-01), Sirat et al.
Proceedings of the SPIE, Bartholomew et al., vol. 88, 1976, pp. 97-104, "Some Useful Applications of Polarized Light in Holography and Optical Information Processing".
Deryugin et al., Opt Spectrosc, vol. 35, No. 2, 1973, pp. 195-199, "Polarization Contrast Method in Holography".
Kozma et al., Applied Optics, vol. 8, No. 2, 1969, pp. 393-397, "Bias Level Reduction of Incoherent Holograms".
Sirat et al., Optics Letters, vol. 10, No. 1, 1985, pp. 4-6, "Conoscopic Holography".

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