An information processing apparatus includes: a light emitting unit configured to emit light； an optical unit configured to induce an optical influence to the light from the light emitting unit, the optical unit having an astigmatic lens configured to generate astigmatism with a plurality of focal lengths； a detecting unit configured to detect the light emitted in the light emitting unit, radiated outside through the optical unit, and reflected by an object； and a measuring unit configured to measure a distance to the object based on astigmatism generated in the reflection light detected in the detecting unit.
