Optical apparatus, in-vehicle system including optical apparatus, and moving apparatus including optical apparatus

An optical apparatus comprising:

• a first deflection unit configured to deflect illumination light from a light source unit to scan an object, and deflect reflected light from the object;
• a first light guiding unit configured to guide the illumination light from the light source unit to the first deflection unit, and guide the reflected light from the first deflection unit to a light receiving unit;
• a second light guiding unit configured to guide the illumination light from the light source unit to the light receiving unit;
• and
• an optical system configured to increase a diameter of the illumination light from the first deflection unit and decrease a diameter of the reflected light from the object,
• wherein the first light guiding unit includes a first passing region through which the illumination light from the light source unit passes and a reflective region in which the reflected light from the first deflection unit is reflected, and
• wherein the second light guiding unit is configured to guide, to the light receiving unit, light reflected in the reflective region without going through the object among the illumination light from the first deflection unit.

An optical apparatus comprising:

• a first deflection unit configured to deflect illumination light from a light source unit to scan an object, and deflect reflected light from the object;
• a first light guiding unit configured to guide the illumination light from the light source unit to the first deflection unit, and guide the reflected light from the first deflection unit to a light receiving unit;
• and
• a second light guiding unit configured to guide the illumination light from the light source unit to the light receiving unit,
• wherein the first light guiding unit includes a first passing region through which the illumination light from the light source unit passes and a reflective region in which the reflected light from the first deflection unit is reflected, and
• wherein the second light guiding unit is configured to guide, to the light receiving unit, light reflected in the reflective region without going through the object among the illumination light from the first deflection unit, and
• wherein an incident surface of the second light guiding unit is arranged between the first light guiding unit and the first deflection unit in a direction that is parallel to an optical axis of the light source unit.