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- W627436215 abstract "During recent years IR cameras have been seen more and more frequently used in commercial contexts. This is an effect of the price of the IR detectors which has been descending making the systems in all less expensive. IR cameras designed for thermography are in many aspects similar to digital cameras for and many of the functions found in theses IR-cameras comes from the camera industry.Since the handheld systems that are used as thermographs generates images with higher and higher resolution, the effects of undesired vibrations, such as hand shakings, are becoming noticeable in the results. This is especially observable for cameras equipped with lenses of a small field of view.Different methods for optical image stabilization are commonly appearing in the camera industry. The solutions are often based on a planar movement of an element within the lens, or the whole image sensor itself. Principally this would also be possible to implement on an IR camera.Another possible solution could be attained by using a planar lens element of significant thickness to get a parallel displacement of the light when the element is tilted. This element would preferably be placed between the lens and the image sensor of the camera. No cameras using this technique have been found on the market.Since glass is not transparent in the IR part of the spectrum lenses made of Germanium are used in thermograph systems. The high indices of refraction of Germanium make it very suitable for the above mentioned application.The prototype that this master thesis has resulted in shows that a planar Germanium lens which can be tilted by two DC motors based on the information from two angular rate sensors can reduce the effects of involuntary vibrations of an IR camera." @default.
- W627436215 created "2016-06-24" @default.
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- W627436215 date "2008-01-01" @default.
- W627436215 modified "2023-09-24" @default.
- W627436215 title "Elektromekanisk bildstabilisering för IR-kamera" @default.
- W627436215 hasPublicationYear "2008" @default.
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