Light projection apparatus and moving body

A light projection apparatus comprising

• a light deflection device, wherein
• the light deflection device
• includes a light emission surface,
• emits light in a direction intersecting with the light emission surface, and
• is configured to change an emission angle along a first direction of the light to be emitted from the light emission surface in a range from a first angle to a second angle being larger than the first angle,
• the light deflection device is disposed such that one light out of first light emitted at the first angle from the light emission surface and second light emitted at the second angle from the light emission surface, the one light having a larger width in the first direction at a long distance than another light out of the first light and the second light, is projected vertically downward relative to other light, and
• a difference between a width of the first light and a width of the second light in the first direction is greater than a difference between a width of the first light and a width of the second light in a direction perpendicular to the first direction.

A light projection apparatus comprising

• a light deflection device, wherein
• the light deflection device includes
• a plurality of optical waveguides arranged in a first direction and each extending in a second direction, and
• a plurality of phase shifters each connected to corresponding one of the plurality of optical waveguides,
• the light deflection device is configured to change an emission angle along the first direction of light to be emitted from a light emission surface in a range from an emission direction angle θ1 to an emission direction angle θ2 being larger than the emission direction angle θ1, the light emission surface being parallel to the first direction and the second direction,
• the light deflection device is disposed such that first light emitted at the emission direction angle θ2 from the light emission surface is projected vertically downward relative to second light emitted at the emission direction angle θ1 from the light emission surface,
• a first spread angle of the first light is greater than a second spread angle of the second light, and
• a difference between the first spread angle and the second spread angle in a vertical direction is greater than a difference between the first spread angle and the second spread angle in a horizontal direction.