SOLID-STATE IMAGE PICKUP ELEMENT AND IMAGING DEVICE

• Main Author: KAWABATA KAZUNARI
• Format: Patent
• Language: English; Japanese
• Published: 23.03.2017
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION; SEMICONDUCTOR DEVICES

PROBLEM TO BE SOLVED: To provide a technique which is advantageous to improvement of non-uniformity of an optical characteristic which occurs due to asymmetry of layout of pixels.SOLUTION: An imaging element comprises plural pixels containing photoelectric conversion elements arranged in a matrix form, and a micro-lens array in which plural micro-lenses corresponding to the plural pixels are arranged. In the micro-lens array, a first group of micro-lenses having a first shape, and a second group of micro-lenses having a second shape different from the first shape are arranged. The center of a region where the micro-lenses constituting the first group are arranged is deviated from the center of an effective pixel region of the imaging element, and a region where the micro-lenses constituting the second group are arranged contains two parts which are arranged so as to sandwich the whole of the first group therebetween.SELECTED DRAWING: Figure 1 【課題】画素レイアウトの非対称性により生じる光学特性の不均一性を改善するのに有利な技術を提供する。【解決手段】行列状に配置された光電変換素子を含む複数の画素と、前記複数の画素にそれぞれ対応する複数のマイクロレンズが配置されたマイクロレンズアレイと、を含む撮像素子であって、前記マイクロレンズアレイには、第１の形状のマイクロレンズからなる第１グループと、前記第１の形状と異なる第２の形状のマイクロレンズからなる第２グループとが配置されており、前記第１グループを構成するマイクロレンズが配置された領域の中心は前記撮像素子の有効画素領域の中心からずれていて、かつ、前記第２グループを構成するマイクロレンズが配置された領域は、前記第１グループの全体を挟むように配置された２つの部分を含む。【選択図】図１