Image sensors for digital photography: a short course for undergraduates. I: Optics
2020
Over the last half century, photography has evolved from photochemical reactions induced on a
photosensitive film to optoelectronic devices employed in digital image. Video has done the same
migration from classical film movies to optoelectronic acquisition and storage. Digital and video cameras
share optics with traditional film cameras, but the image recording is realized by an optoelectronic device
–a CCD or CMOS sensor– rather than a film. The quantity of digital photo and video images has
dramatically increased in the last decade, arising from the ubiquitous cameras of mobile phones. Despite
their popularity, condensed tutorial articles on the subject are still scarce. This work intends to contribute
to the knowledge of this field with a medium-level short course that is currently being taughtin a broader
subject (Consumer Photonics) to undergraduate students of Telecommunication Engineers at the
Universidad Politecnica de Madrid. The course can be followed by students having a basic background
on Physics and specifically on Optics and Semiconductors. The course is divided into two chapters. An
introduction to optics of cameras and basic concepts of photography has been considered necessary to
follow the second part, which is entirely devoted to optoelectronic sensors
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