Image exposure-recording device and image exposure-recording...

Details Image exposure-recording device and image exposure-recording... Image exposure-recording device and image exposure-recording...

2005-03-08

2005-03-08

Assaf, Fayez (Department: 2872)

Optical: systems and elements

Holographic system or element

For producing or reconstructing images from multiple holograms

C359S035000, C359S022000, C359S030000

Reexamination Certificate

active

06865002

ABSTRACT:
An image exposure recorder for exposure-recording a holographic stereogram image or a hologram image on a recording medium for hologram. The recorder has an inverse correction system for rotating the polarization plane of a reference light (R) by means of a half-wave plate (11), directing the reference light (R) to a hologram recording medium (3), and measuring the intensity of a part of the reference light (R) transmitted through a polarizer (12) out of the reference light (R) transmitted through a part of the area of the hologram recording medium by means of a photodetector (13). In the inverse correction system, the angle of rotation of the half-wave plate is so determined that the intensity of the reference light (R) determined by the photodetector may be minimum or maximum. Therefore the degradation of the coherence between the object light and the reference light attributed to the transmission of the object and reference lights through the hologram recording medium having birefringence is prevented, and thus a holographic stereogram for reproducing a bright holographic stereogram image is fabricated.

REFERENCES:
patent: 5892597 (1999-04-01), Iwata et al.
patent: 5949559 (1999-09-01), Kihara et al.
patent: 54-160257 (1979-12-01), None
patent: 58-72982 (1983-05-01), None
patent: 2-109086 (1990-04-01), None
patent: 5-72959 (1993-03-01), None
International Search Report for PCT/JP02/06119 dated Aug. 20, 2002.

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