PROBLEM TO BE SOLVED: To suppress deterioration of quality of a displayed image while using only one base material. An optical member 10 includes a base material 11, a first diffraction optical member 20, a second diffraction optical member 30, and a third diffraction optical member 40. The first diffraction optical member 20 includes a first diffraction optical element 21 and a second diffraction optical element 22. The second diffraction optical member 30 includes a third diffraction optical element 31 and a fourth diffraction optical element 32. The third diffraction optical member 40 includes a fifth diffraction optical element 41 and a sixth diffraction optical element 42. The second diffractive optical member 30 is located at a position deviated from the first diffractive optical member 20 in the first direction d1. The third diffractive optical member 40 is located at a position deviated from the second diffractive optical member 30 in the second direction d2. In a plan view, the first diffractive optical element 21 and the second diffractive optical element 22 are provided at positions shifted in a direction orthogonal to the first direction d1. In a plan view, the third diffractive optical element 31 and the fourth diffractive optical element 32 are provided at positions shifted in a direction orthogonal to the first direction d1. [Selection diagram] Fig. 2
展开▼
