An electromagnetic wave detection apparatus comprising: a first propagation unit comprising a plurality of pixels (px) along a reference surface (ss) and configured to propagate electromagnetic waves incident on the reference surface (ss) in a particular direction at each pixel (px) of the plurality of pixels (px); a second propagation unit comprising a first prism , wherein the first prism includes a first surface (s1), a second surface (s2), and a third surface (s3) as different surfaces, a second prism , wherein the second prism includes a fourth surface (s4), a fifth surface (s5, s50, s51, s53, s54, s55, s56), and a sixth surface (s6) as different surfaces, the first surface (s1) configured to propagate electromagnetic waves incident from a first direction (d1) in a second direction (d2), the second surface (s2) configured to separate the electromagnetic waves propagated in the second direction (d2) and propagate the electromagnetic waves in a third direction (d3) and a fourth direction (d4), the third surface (s3) configured to emit the electromagnetic waves propagated in the third direction (d3), the fourth surface (s4) configured to emit the electromagnetic waves propagated in the fourth direction (d4) towards the reference surface (ss) and to propagate electromagnetic waves incident again from the reference surface (ss) in a fifth direction (d5), the fifth surface (s5, s50, s51, s53, s54, s55, s56) configured to propagate the electromagnetic waves propagated in the fifth direction (d5) in a sixth direction (d6), and the sixth surface (s6) configured to emit the electromagnetic waves propagated in the sixth direction (d6); a first detector configured to detect the electromagnetic waves emitted from the third surface (s3); and a second detector configured to detect the electromagnetic waves emitted from the sixth surface (s6). a first propagation unit comprising a plurality of pixels (px) along a reference surface (ss) and configured to propagate electromagnetic waves incident on the reference surface (ss) in a particular direction at each pixel (px) of the plurality of pixels (px); a second propagation unit comprising a first prism , wherein the first prism includes a first surface (s1), a second surface (s2), and a third surface (s3) as different surfaces, a second prism , wherein the second prism includes a fourth surface (s4), a fifth surface (s5, s50, s51, s53, s54, s55, s56), and a sixth surface (s6) as different surfaces, the first surface (s1) configured to propagate electromagnetic waves incident from a first direction (d1) in a second direction (d2), the second surface (s2) configured to separate the electromagnetic waves propagated in the second direction (d2) and propagate the electromagnetic waves in a third direction (d3) and a fourth direction (d4), the third surface (s3) configured to emit the electromagnetic waves propagated in the third direction (d3), the fourth surface (s4) configured to emit the electromagnetic waves propagated in the fourth direction (d4) towards the reference surface (ss) and to propagate electromagnetic waves incident again from the reference surface (ss) in a fifth direction (d5), the fifth surface (s5, s50, s51, s53, s54, s55, s56) configured to propagate the electromagnetic waves propagated in the fifth direction (d5) in a sixth direction (d6), and the sixth surface (s6) configured to emit the electromagnetic waves propagated in the sixth direction (d6); a first detector configured to detect the electromagnetic waves emitted from the third surface (s3); and a second detector configured to detect the electromagnetic waves emitted from the sixth surface (s6). <EOS>