Solid state imaging apparatus

Details Solid state imaging apparatus Solid state imaging apparatus

1992-02-10

1994-02-01

Lerner, Martin

Optical: systems and elements

Diffraction

From grating

250239, 359569, 257431, G02B 518, G02B 2744, H01L 3102, H01L 2714

Patent

active

052836916

ABSTRACT:
A solid state imaging apparatus characterized in that a phase low pass filter is formed by providing an array of recesses and projections having a predetermined repeated pitch on the surface of the light receiving side of a clear molded package of a solid state imaging device. When an object light passes through the phase low pass filter, dot images will be separated by diffraction of the light and an image will be formed on every other unit pixel of the light receiving surface. Thereby, the moire can be removed without using a crystal plate filter or the like.

REFERENCES:
patent: 4634219 (1987-01-01), Suzuki
patent: 4795236 (1989-01-01), Ise
patent: 4878737 (1989-11-01), Ise
patent: 4989972 (1991-02-01), Braun
patent: 4998801 (1991-03-01), Shiraishi et al.

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