Optical device

An optical device comprising:

• a light source device comprising a light source that emits light in a first direction and a first positioning surface orthogonal to the first direction;
• a lens mirror array disposed a distance away from and opposite to the light source device in the first direction, the lens mirror array comprises:
• an incident-side lens surface on which the light emitted from the light source is made incident,
• an emission-side lens surface from which the light made incident via the incident surface is emitted,
• a second positioning surface provided in a position orthogonal to the first direction and overlapping the first positioning surface in the first direction, and
• a lens contact surface positioned on an end nearest the light source device;
• and
• a holder comprising:
• a third positioning surface that is in surface contact with the first positioning surface,
• a fourth positioning surface that is positioned a distance away from the second positioning second positioning surface and is provided in a position overlapping the third positioning surface in the first direction, and
• a holder contact surface in surface contact with the lens contact surface
• wherein the holder is configured to hold the light source device in a state in which the first positioning surface of the light source device is in surface contact with the third positioning surface and hold the optical member in a state in which the second positioning surface of the optical member is in surface contact with the fourth positioning surface.

An optical device comprising:

• a holder comprising a light source that emits light in a first direction and a first positioning surface orthogonal to the first direction, wherein the light source comprises a light transmission panel orthogonal to the first direction;
• an optical member disposed a distance away from and opposite to the light source in the first direction, the optical member comprises:
• an incident surface on which the light emitted from the light source is made incident, an emission surface from which the light made incident via the incident surface is emitted, and a second positioning surface provided in a position orthogonal to the first direction and overlapping the first positioning surface in the first direction;
• and wherein the holder further comprises:
• a third positioning surface that is in surface contact with the light transmission panel, and a fourth positioning surface that is in surface contact with the second positioning surface and is provided in a position overlapping the third positioning surface in the first direction, wherein the holder is configured to position the light source in an optical axial direction.