Light emitting element array and optical measuring system

A light emitting element array comprising:

• a light emitting element group that includes a plurality of light emitting elements;
• and
• a plurality of lenses that is provided, corresponding to the plurality of light emitting elements, on a light emitting surface side of the plurality of light emitting elements, and that deflects light emitted from the plurality of light emitting elements according to a positional relation with the plurality of light emitting elements, wherein
• the plurality of light emitting elements and the plurality of lenses are arranged such that distances between central axes of light emission of the plurality of light emitting elements and central axes of the plurality of lenses corresponding to the plurality of light emitting elements increase from a center side of the light emitting element group toward an end side of the light emitting element group, and
• the plurality of light emitting elements and the plurality of lenses are arranged such that a degree of change in the distances changes non-linearly from the center side of the light emitting element group toward the end side of the light emitting element group such that an amount of light at the end side of the light emitting element group increases and an amount of light at the center side of the light emitting element group decreases as compared to a case where the degree of change in the distances changes linearly from the center side toward the end side of the light emitting element group.

A light emitting element array comprising:

• a light emitting element group that includes a plurality of light emitting elements;
• and
• a plurality of lenses that is provided, corresponding to the plurality of light emitting elements, on a light emitting surface side of the plurality of light emitting elements, and that deflects light emitted from the plurality of light emitting elements according to a positional relation with the plurality of light emitting elements, wherein
• distances between central axes of light emission of the plurality of light emitting elements and central axes of the plurality of lenses corresponding to the plurality of light emitting elements increase from a center side of the light emitting element group toward an end side of the light emitting element group in at least one direction in which the plurality of light emitting elements and the plurality of lenses are arranged, and
• a degree of change in the distances decreases from the center side of the light emitting element group toward the end side of the light emitting element group based on a cosine function in the at least one direction.