Light control filter

A light control filter, comprising a sheet having a sea-island structure including a light-transmitting portion and a light-shielding portion,

• wherein the light-transmitting portion and the light-shielding portion each extend from a first principal surface to a second principal surface,
• wherein the light-transmitting portion forms a plurality of island portions configured to penetrate completely through the sheet from the first principal surface to the second principal surface, and the light-shielding portion forms a sea portion configured to separate the plurality of island portions from one another,
• wherein the sea portion has an MD-1 rubber hardness of 25 or more and 80 or less,
• wherein the sea portion includes 50 mass % or more of a silicone rubber with respect to a total mass of the sea portion,
• wherein an aspect ratio between a size of each of the plurality of island portions in plan view of the sheet and a height of each of the plurality of island portions in a thickness direction of the sheet is from 1:8.5 to 1:25.5,
• wherein a size of each of the plurality of island portions in plan view of the sheet is 5 μm or more and 50 μm or less,
• wherein a three-dimensional shape of each of the plurality of island portions in the sheet is a columnar shape,
• wherein the plurality of island portions are arranged in a two-dimensional array in plan view of the sheet, and
• wherein the light control filter can be handled in a form of a single layer as a single light control filter, and a support layer configured to maintain the mechanical strength of the light control filter is not required.