Patent ID: 8006376

Claim:
A method for assembly of an LED lighting device comprising an LED module and an optical unit, which LED lighting device is configured as a reading or seat light for use in a vehicle such as an airplane, a train or a bus, said method comprising the steps of: arranging an optical unit and an LED module in a support for later fixation to each other, the LED module including at least one LED, and the optical unit having a reflector or a lens for illuminating a measuring plane by use of electromagnetic radiation from the LED module and with the aid of said reflector or lens, driving the LED module to cause it to emit electromagnetic radiation for illuminating the measuring plane, detecting at least a part of the electromagnetic radiation of the LED module that is incident on the measuring plane, by use of a detector arranged on the support, moving the LED module relative to the optical unit and/or the optical unit relative to the LED module along an optical axis, until the detector detects electromagnetic radiation of the LED module of a presettable intensity, fixing the optical unit and the LED module relative to each other in their current relative positions, and removing the thusly fixed optical unit and LED module from the support on which the detector is arranged.