| Lichtquelle | light source |
| Lichtwelle | light wave |
| Lichtdouble | stand in |
| Lichtmenge | luminous energy |
| Lichthupe | headlight flasher |
| Lichtquant | light quantum |
| Sichelzelle | sickle cell |
| Punktquelle | point source |
| Lichtbild | photograph |
| Lichtecho | light echo |
| Lichtenergie | luminous energy |
| Lichtkuppel | top light |
| Lichtmess | Candlemas |
| Lichtpause | blueprint |
| Lichtsegel | light sail |
| Lichtstunde | light-hour |
| Lichtzieher | chandler |
| lichte Höhe | headway |
| lichtecht | lightfast |
| lichthupen | blink |