> Cómo se fabrica un CCD (video) <

Vía Microsiervos he encontrado este video en YouTube de divulgación bastante espectacular para los que gusten de las interioridades de la fotografía/electrónica.




Durante 5 minutos (con explicaciones en inglés) nos cuentan cómo se fabrica un CCD (Charge Coupled Device). La empresa del vídeo es Dalsa, una gente de Canadá que nos ha vendido al IAC un buen montón de cámaras con sus chips. Pueden llegarse a fabricar de un formato hasta de 9000 x 9000 píxeles, creo, pero ahora mismo no sé quién tiene el "record", ellos o Philips o Fairchild -ver foto 9216 x 9216- (tampoco la oblea o "wafer" da más de sí).



Los de cámaras fotográficas son menos sensibles (un factor 2 aproximadamente) que los utilizados en cámaras de telescopios, que tienen un proceso de fabricación específico llamado "Back illuminated" y tienen que enfriarse a una temperatura alrededor de -100ºC. De éstos, lo más que se tienen son formatos de 4000 x 4000 píxeles, recién llegados al mercado. De momento, tres compañías los desarrollan: Fairchild, E2V Technologies y la propia Dalsa en colaboración con una institución académica estadounidense.

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