Imager including a solid state imaging device with optical low p

Details Imager including a solid state imaging device with optical low p Imager including a solid state imaging device with optical low p

1996-08-29

1999-08-17

Garber, Wendy

Television

Camera, system and detail

Optics

348250, 348317, 359498, H04N 5225, H04N 964, H04N 5335

Patent

active

059401273

ABSTRACT:
An imager with which it is possible to reduce the aliasing noise effectively. An imaging light from an object is condensed by an optical system 1 so as to fall on an optical low-pass filter 2. The optical low-pass filter 2 has trap points corresponding to zero values of the MTF characteristics on two points of 1/2 and 1 of the spatial sampling frequency on horizontal and vertical MTF characteristics, and reduces components less than one-half the spatial sampling frequency as determined by the arraying of the light receiving elements of a CCD 4 of the imaging light. The CCD 4 receives the imaging light, the spatial frequency of which has been suppressed by the spatial low-pass filter 2, and outputs an imaging light.

REFERENCES:
patent: 4539584 (1985-09-01), Otake
patent: 4761682 (1988-08-01), Asaida
patent: 5452129 (1995-09-01), Shiraishi
patent: 5471343 (1995-11-01), Takasugi
patent: 5477381 (1995-12-01), Sasaki et al.

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