Solid-state imaging device, shape-measuring device, and shape-measuring method

A solid-state imaging device comprising:

• a first light receiving unit in which a plurality of pixel pairs are arrayed along a first direction;
• and
• a second light receiving unit in which a plurality of pixels each configured to generate charges in an amount according to a light receiving amount are arrayed along a second direction intersecting with the first direction, wherein
• each of the plurality of pixel pairs of the first light receiving unit includes a first pixel and a second pixel arranged in juxtaposition along the first direction, and
• when line-shaped light extending in the first direction is incident on the first light receiving unit, as a light incident position varies from one side to another side in the second direction, a charge amount generated in the first pixel gradually decreases, and a charge amount generated in the second pixel gradually increases.