| 摘要 |
A lens array includes a lens assembly member and a light blocking member. The lens assembly member includes lens elements arranged in an arrangement direction substantially perpendicular to optical axes thereof. The light blocking member includes apertures extending and passing through the optical axes. The lens assembly members and the light blocking member are arranged so that the following relationship is satisfied: RAY/RLY<RAX/RLX where RLY is a radius of the lens elements in a direction parallel to the arrangement direction, RLX is a radius of the lens elements in a direction perpendicular to the arrangement direction, RAX is a radius of the aperture in a direction perpendicular to the arrangement direction, and RAY is a distance from a center of a circle with the radius RAX to an end portion of the aperture in a direction in parallel to the arrangement direction.
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