### 5.3.4 Summary to: Optical Components

| Light Sources Hot bodies (tungsten filaments) in light bulbs and plasma discharge in fluorescent tubes |  |
|  | Inefficient light bulbs still dominates when this lecture course started (2010) |
|  | LEDs have taken over when this hyperscript was finalized (2019) |
| Mot included above is the Laser. |
|  | You must learn about the Laser somewhere else |

| Processing light with, for example, conventional lenses, mirrors and prism, anti-reflection coatings |  |
|  | Even simple light processors like lenses (and the rest from above) might be extremely complex materials engineering products today. Just look at the picture of a (by now (2019) outdated lens for microelectronic lithography- |
| Polarizers, diffraction gratings and filters add another layer of complexity. |
|  | The list goes on, with, e.g. phase shifters and whatever is needed for doing holgraphy or... |
|  | Laser "beam forming", modulation, fultr-high speed detection, ... |

© H. Föll (Advanced Materials B, part 1 - script)