Abstract: Provided is a solid-state imaging device including a semiconductor substrate, a photoelectric conversion unit on the semiconductor substrate, and a recess of two or more steps formed on a surface on a light incident side of the semiconductor substrate, and further provided is a solid-state imaging device including a semiconductor substrate, a photoelectric conversion unit provided on the semiconductor substrate, and a light-shielding wall above the light incident side of the semiconductor substrate, in which the light-shielding wall includes a first portion having a first width extending in a direction substantially parallel to a light incident surface of the semiconductor substrate, and a second portion having a second width extending in a direction substantially perpendicular to the light incident surface, the second width being smaller than the first width, and the second portion is provided between the first portion and the semiconductor substrate.

Abstract: A solid-state imaging device capable of obtaining an image having high image quality is provided. The solid-state imaging device includes a pixel unit which is configured such that a plurality of unit pixels are disposed in a two-dimensional array, the plurality of unit pixels being configured to include a plurality of photoelectric conversion units and a plurality of microlenses, the plurality of photoelectric conversion units being formed on a substrate and generating signal charges corresponding to the amount of incident light, and the plurality of microlenses being configured such that one microlens is formed for one photoelectric conversion unit group among a plurality of photoelectric conversion unit groups each of which is constituted by at least two or more adjacent photoelectric conversion units insulated from each other by an impurity layer, and guiding the incident light to each of a plurality of the photoelectric conversion unit groups.

Abstract: An extraction bag with support includes a support member and a bag member which contains a material to be extracted or which is capable of containing a material to be extracted or which is capable of containing a material to be extraction, and is obtained by using a sheet composite on which the support member is arranged and joined along the center line of a water-permeable filtering sheet member, by folding the sheet composite into two and by passing it through a bag-making machine (and, as required, though a filling machine). The head portions of the extraction bag with support are torn apart, the right and left ends are pushed down or up toward the inside to push open the head portions. At the same time, the leg portions continuous with the head portions are folded down to place the extraction bag with support on an extraction container.

Abstract: A support-equipped extraction bag which comprises a bag main body containing or capable of containing an extraction-subject material and produced by using a sheet complex having a support disposed along the centerline of a water-permeable filtering sheet member and bonded thereto, and using a bag making machine (and a filling machine, if necessary) while folding it in two, and a support member, wherein extraction can be safely effected by tearing the head of the support-equipped extraction bag, bending the right and left ends inwardly downward or upward so as to spread the head, simultaneously downwardly bending the leg continuous with the head to place it on an extraction vessel, and pouring an extraction liquid (boiling water) over an extraction-subject material which is filled through the tear in the head or which has been filled in advance.