Mobile inspection tunnel for illuminating reflective surfaces of objects positioned in the inner inspection area of the tunnel, the tunnel having opposite openings on both ends, the openings being spaced along the longitudinal extension of the tunnel, the tunnel comprising at least one modular tunnel element between the openings, each modular tunnel element having a double-walled tunnel wall spanning the inner inspection area, the tunnel wall comprising: a. at least one LED support sheet, i. the at least one LED support sheet forming the exterior wall of the double-walled tunnel wall, ii. the at least one LED support sheet being at least partially curved, iii. the at least one LED support sheet supporting a plurality of electrically controllable light sources arranged on the interior surface of the sheet and configured to emit light towards the inner inspection area, b. at least one translucent light scattering sheet, i. the at least one light scattering sheet forming the interior wall of the double-walled tunnel wall, ii. the at least one light scattering sheet being at least partially curved, iii. the at least one light scattering sheet being arranged on the inside of the LED support sheet in a distance to the LED support sheet along its entire extension, iv. the at least one light scattering sheet being configured to be illuminated by the light emitted from the light sources of the LED support sheet and to scatter the light towards the inspection area, characterized in that the curved area of the LED support sheet is formed into the material of the LED support sheet by elastically bending the LED support sheet from a relaxed planar shape into a bent curved state and the curved area of the light scattering sheet is formed into the material of the light scattering sheet by elastically bending the light scattering sheet from a relaxed planar shape into a bent curved state, both sheets (1a, 1b) being held in a bent shape by means of a support structure of the modular tunnel element to which at least the LED support sheet is attached, particularly the bent light scattering sheet being supported by the bent LED support sheet. a. at least one LED support sheet, i. the at least one LED support sheet forming the exterior wall of the double-walled tunnel wall, ii. the at least one LED support sheet being at least partially curved, iii. the at least one LED support sheet supporting a plurality of electrically controllable light sources arranged on the interior surface of the sheet and configured to emit light towards the inner inspection area, i. the at least one LED support sheet forming the exterior wall of the double-walled tunnel wall, ii. the at least one LED support sheet being at least partially curved, iii. the at least one LED support sheet supporting a plurality of electrically controllable light sources arranged on the interior surface of the sheet and configured to emit light towards the inner inspection area, b. at least one translucent light scattering sheet, i. the at least one light scattering sheet forming the interior wall of the double-walled tunnel wall, ii. the at least one light scattering sheet being at least partially curved, iii. the at least one light scattering sheet being arranged on the inside of the LED support sheet in a distance to the LED support sheet along its entire extension, iv. the at least one light scattering sheet being configured to be illuminated by the light emitted from the light sources of the LED support sheet and to scatter the light towards the inspection area, i. the at least one light scattering sheet forming the interior wall of the double-walled tunnel wall, ii. the at least one light scattering sheet being at least partially curved, iii. the at least one light scattering sheet being arranged on the inside of the LED support sheet in a distance to the LED support sheet along its entire extension, iv. the at least one light scattering sheet being configured to be illuminated by the light emitted from the light sources of the LED support sheet and to scatter the light towards the inspection area,