POSITION MEASURING DEVICE AND METHOD FOR PRODUCING A LIGHT SOURCE FOR A SENSOR UNIT OF A POSITION MEASURING DEVICE

To realize a method of manufacturing a light source for a sensor unit of a position determination device, capable of manufacturing a high quality light source economically.SOLUTION: A method of manufacturing a light source for a sensor unit of a position determination device has a step of fixing a semiconductor components 1.1 and a conductive body part onto a first auxiliary support medium, a step of disposing first grout paste 1.5, and fixing the support medium and the conductive body part each other, a step of removing the first auxiliary support medium, a step of manufacturing a first test pad in contact with a first component electrically, a step of obtaining a panel having the first component, the first grout paste, a bridge conductor path 1.6, the first test pad and the second test pad, by manufacturing the second test pad, a step of feeding a current via the first and second test pads, and a step of cutting off the test pad at least partially from the light source by separating the panel.SELECTED DRAWING: Figure 5