Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1989-11-15
1990-12-11
Kostak, Victor R.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358 55, 358225, 358901, 128 6, A61B 104, H04N 718
Patent
active
049774506
ABSTRACT:
An image pickup system for endoscopes includes an image guide fiber bundle, a light guide fiber bundle, an imaging lens unit having optical low-pass filters, and a solid-state image pickup device. Further, a first optical low-pass filter having a spatial frequency response depending on an array of fibers of the image guide fiber bundle and a second low-pass filter having a spatial frequency response depending on a sampling frequency of the solid-state image pickup device can also be provided between the image guide fiber bundle and the solid-state image pickup device. Thus, even in the image guide fiber bundle which is different in effective diameter and core diameter and has a disorderly array of fibers, the generation of moire can be prevented without reducing resolution.
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patent: 4720178 (1988-01-01), Nishioka et al.
patent: 4760839 (1988-08-01), Nagasaki
patent: 4761682 (1988-08-01), Asaida
patent: 4807981 (1989-02-01), Takizawa et al.
patent: 4845554 (1989-07-01), Kimura et al.
Kostak Victor R.
Olympus Optical Co,. Ltd.
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