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JP2002165226A Expired / Lapsed JP ⏱️ 0.0 years remaining

Imaging device and imaging device

Assignee: Olympus Corp
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Filing: 2000-11-24
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Granted: —
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Expires: 2020-11-24
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Abstract

Abstract Translated from Japanese (57)【要約】 【課題】感度の異なる高低2種類の画素を含む複画素内 の画素配列を改良して、偽信号の発生を招くことなくダ イナミックレンジの拡大を図る。 【解決手段】CCD撮像素子の色フィルタには、2×2 の4画素ブロックが同色で、ブロックを単位とした場合 の配列がベイヤ配列であるような複ベイヤ配列が用いら れる。この場合、4画素ブロックからなる各複画素内に は高低2つの濃度の同色フィルタが市松配置(対角配 置)されている。例えばRの複画素はRの分光感度特性 を持つ2×2の4画素から構成されるが、このうちの対 角配置された2画素はフィルタ濃度の低い高感度画素 (LR)であり、別の対角配置された2画素はフィルタ 濃度の高い低感度画素(dR)である。G,Bの複画素 についても同様の構造であり、複画素の色の違いを無視 して考えれば、画素配列全体にわたって高低2種類の感 度の画素(L,d)が市松配置された形式となってい る。 (57) [Problem] To improve a pixel array in a multi-pixel including two kinds of pixels having different sensitivities, high and low, and to expand a dynamic range without generating a false signal. A color filter of a CCD image sensor has a 2 × 2 color filter. Is a Bayer arrangement in which the four pixel blocks are the same color and the arrangement in blocks is a Bayer arrangement. In this case, the same color filters having two densities of high and low are arranged in a checkered pattern (diagonal arrangement) in each of the multiple pixels composed of the four pixel blocks. For example, an R double pixel is composed of 4 2 × 2 pixels having spectral sensitivity characteristics of R. Of these, two diagonally arranged pixels are high-sensitivity pixels (LR) having a low filter density, and Are two low-sensitivity pixels (dR) having a high filter density. The same structure is applied to the G and B multi-pixels. If the difference in the colors of the multi-pixels is ignored and considered, the pixel (L, d) having two types of sensitivity, high and low, is arranged in a checkered pattern over the entire pixel array. Has become.

Inventors

  • 👤 Keiichi Mori
  • 👤 圭一 森
  • 👤 Hideaki Yoshida
  • 👤 英明 吉田

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-09 20:33
CPC Classifications
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