| 摘要 |
A display panel that, together with an optical device equipped with an emission unit for emitting invisible light and a reception unit for receiving reflected invisible light, forms a display control system. A transparent medium (413) having a refractive index n connects an invisible light reflection layer (432) and a pattern layer of the display panel. For the dots (411) forming the pattern layer, the distance X from the tip end on the side facing the invisible light reflection layer (432) to the average line of the surface shape of the invisible light reflection layer (432) satisfies the equation W/2 ≤ X < D/tan[sin-1{sin θ/n}], where D is the average major diameter of the dots (411) forming the pattern layer, W is the average height difference of the surface shape of the invisible light reflection layer (432), and θ (0 < θ < π/2(90°)) is the angle formed by the light axis of the emission unit and the light axis of the reception unit of the optical device. |
