PROBLEM TO BE SOLVED: To provide an aerial floating image display optical sheet that can be easily handled.SOLUTION: The aerial floating image display optical sheet has a light reflection sheet (20) comprising a base layer (21), a first light reflection sheet (30) laminated on one surface of the base layer, and a second light reflection sheet (40) laminated on the first light reflection sheet, all integrally formed. Each of the first light reflection sheet and the second light reflection sheet includes: a unit reflective element (23) that has a predetermined cross section, extends in one direction along the sheet surface, is arranged in a plurality of numbers at a predetermined interval in a direction different from the extension direction, and forms a total reflection interface; and a low refractive index part (24) formed in the interval and made of a resin having a refractive index lower than that of the unit reflective element. The first light reflection sheet and the second light reflection sheet are overlapped in such a manner that the direction where the ridge line of the unit reflective element of the first light reflection sheet extends and the direction where the ridge line of the unit reflective element of the second light reflection sheet extends intersect each other in a plan view of the optical sheet.SELECTED DRAWING: Figure 3
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