Image pick-up apparatus

Details Image pick-up apparatus Image pick-up apparatus

1996-03-19

1998-06-30

Epps, Georgia Y.

Optical: systems and elements

Single channel simultaneously to or from plural channels

By partial reflection at beam splitting or combining surface

359629, G02B 2714

Patent

active

057742693

ABSTRACT:
An image pick-up apparatus (1) which includes a beam splitter (2) for splitting an image into sub-images and several image sensors (3, 4) for picking up the sub-images is provided with a depolarizing element (6) for reducing the linear polarization degree of the light incident on the beam splitter. The electronic image signals of the image sensors (3, 4) are combined so as to form an electronic image signal of a composite image in a combination unit (5). Because the linear polarization degree of the light incident on a mirror surface (27) of the beam splitter (2) is low, the differences between brightnesses of sub-images picked up by individual image sensors are small. Disturbances are thus counteracted in the composite image.
The image pick-up apparatus is preferably used in an X-ray examination apparatus (10) in order to reproduce an X-ray image having a high spatial resolution and few disturbances.

REFERENCES:
patent: 4246607 (1981-01-01), Vijverberg
patent: 4413352 (1983-11-01), Nishio
patent: 4670896 (1987-06-01), Klausz
patent: 4733352 (1988-03-01), Daniele et al.
patent: 4907252 (1990-03-01), Aichinger et al.
patent: 5313542 (1994-05-01), Castonguay
patent: 5434902 (1995-07-01), Bruijns

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