A light shaping apparatus comprising: at least one linear light source (20, 22 to 27) comprising at least one light-emitting point ; a reflective mirror portion comprising a reflective surface that is an orthogonal parabolic surface formed by rotating a curved line about a rotation axis ; and an optical device disposed at a convergence point where light emitted from the at least one linear light source (20, 22 to 27) converges, wherein the light emitted from the at least one linear light source (20, 22 to 27) is reflected by the reflective mirror portion surrounding at least part of the at least one linear light source (20, 22 to 27), and further converges at the convergence point , the rotation axis of the reflective mirror portion extends in a longer-side direction of the at least one linear light source (20, 22 to 27), the light-emitting point of the at least one linear light source (20, 22 to 27) is located on the rotation axis of the reflective mirror portion , the optical device comprises an entrance end face located at the convergence point , the entrance end face being an end face on which the light emitted from the at least one linear light source (20, 22 to 27) is incident, and the reflective surface of the reflective mirror portion is the orthogonal parabolic surface formed by rotating, about the rotation axis , the curved line expressed by the following expression, where a Y-axis denotes the rotation axis , where f denotes a focal length: Y = 2 × f f + X 1⁄2 − f ≤ X ≤ 0 Y = 2 × f f − X 1⁄2 0 ≤ X ≤ f , and the at least one linear light source comprises a plurality of linear light sources (22 to 27) arranged along the rotation axis of the reflective mirror portion , wherein the light emitted from the plurality of linear light sources (22 to 27) converges at the convergence point . at least one linear light source (20, 22 to 27) comprising at least one light-emitting point ; a reflective mirror portion comprising a reflective surface that is an orthogonal parabolic surface formed by rotating a curved line about a rotation axis ; and an optical device disposed at a convergence point where light emitted from the at least one linear light source (20, 22 to 27) converges, wherein the light emitted from the at least one linear light source (20, 22 to 27) is reflected by the reflective mirror portion surrounding at least part of the at least one linear light source (20, 22 to 27), and further converges at the convergence point , the rotation axis of the reflective mirror portion extends in a longer-side direction of the at least one linear light source (20, 22 to 27), the light-emitting point of the at least one linear light source (20, 22 to 27) is located on the rotation axis of the reflective mirror portion , the optical device comprises an entrance end face located at the convergence point , the entrance end face being an end face on which the light emitted from the at least one linear light source (20, 22 to 27) is incident, and the reflective surface of the reflective mirror portion is the orthogonal parabolic surface formed by rotating, about the rotation axis , the curved line expressed by the following expression, where a Y-axis denotes the rotation axis , where f denotes a focal length: Y = 2 × f f + X 1⁄2 − f ≤ X ≤ 0 Y = 2 × f f − X 1⁄2 0 ≤ X ≤ f , and the at least one linear light source comprises a plurality of linear light sources (22 to 27) arranged along the rotation axis of the reflective mirror portion , wherein the light emitted from the plurality of linear light sources (22 to 27) converges at the convergence point . <EOS>