Holography imaging apparatus holography display apparatus hologr

Details Holography imaging apparatus holography display apparatus hologr Holography imaging apparatus holography display apparatus hologr

Filed on

1997-02-28

Date issued

1999-03-30

Examiner

Henry, Jon

Patent Class

Optical: systems and elements

SubClass

Holographic system or element

SubSubClass

Having optical element between object and recording medium

Other Related Categories

359 33, G03H 104, G03H 126

Type

Patent

Status

active

Patent number

058895990

Description

ABSTRACT:
A diaphragm having an aperture, the size of which is equal to or smaller than .lambda.f/p (.lambda. is the wavelength, p is the imaging resolution, and f is the focal length of an imaging optical system) is arranged on the focal plane of the object space of the imaging optical system, and object light via the aperture is imaged by the imaging optical system. The object light via the imaging optical system and reference light are brought to interference to form interference fringes, and an image of the interference fringes is sensed. Using the hologram sensed in this manner, the image of the object to be sensed is reconstructed by adopting an imaging optical system equivalent to that upon imaging, and setting the positional relationship between the formed hologram and the imaging optical system in correspondence with that between the imaging optical system and the imaging surface upon imaging. In this way, a holography imaging apparatus which can vary the field of view and can sense a high-quality hologram using an imaging device having a relatively low spatial resolution is realized, and a holography display apparatus which can display an image by eliminating distortion with respect to the original image from a hologram sensed by the holography imaging apparatus of this invention is realized.

REFERENCES:
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patent: 5081540 (1992-01-01), Dufresne et al.
Xu et al, "Pinhole Hologram and Its Applications", Optics Letters, vol. 14, No. 2, Jan. 15, 1989, New York, New York, USA, pp. 107-109.
Database WPI, Section PQ, Weel 8242, Derwent Publications Ltd., London, GB; Classs P81, AN 82-N8762E XP002049854 & SU 892 399 B (BOBROV S T), Dec. 23, 1981, Abstract.
Basic Experiment of Holographic Television by Liquid Crystal Display Device,K.Sato et al, vol. 45, No. 7, pp. 873-875 (1991) with translation.
Spie vol. 1461 Pratical Holography V(1991)/291 "Real-Time Holography Using the High-Resolution LCTV-SLM" N.Hashimoto et al.
The Bell System Technical Journal, Feb. 1966 " Hologram Transimssion Via Television "L.H.Enloe et al, pp. 334-339.
Applied Optics,May 1972/vol. 11,No. 5 Remote Real-Time Reconstruction of Holograms Using the Lumatron,R.J.Doyle et al,pp. 1261-1254.
Television Bases Fourier Holographic Suystem D.Casasent et al Applied OPtics/vol. 13 No. 10, Oct. 1974, pp. 2268-2273.

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