OPTICAL SYSTEM WITH SLAVED PUPIL ENCODING

摘要

In the field of optical systems comprising at least one optical objective, a photosensitive detector and an image processing unit, the optical objective comprising a pupil encoding filter, the image processing unit performing digital filtering of the images output by the photosensitive detector, a system has a processing unit comprising means arranged in such a way as to process at least one preset, the characteristics of the digital filtering applied to the image depending on this preset. The preset may come from external sensors of temperature and/or pressure or be one of the parameters of the optical objective such as the focal length value, the aperture of the iris, or the desired focal distance. The preset can also be different for different zones of the image, to better take into account the variations of the aberrations in the field of the focusing objective.

主权项

1. An optical system comprising at least one optical objective, a photosensitive detector and an image processing unit, the optical objective comprising a pupil encoding filter, the image processing unit having the function of performing digital filtering of the images output by the photosensitive detector, the processing unit comprising means arranged in such a way as to process at least one preset, said means comprising:
a first sub-assembly comprising a table of the laws relating the input presets to the processes to be applied to the image by the image processing unit; a second sub-assembly controlling at least the various devices for tuning the optical objective; a third sub-assembly performing the digital filtering of images output by the photosensitive detector, the characteristics of the digital filtering applied to the image depending on this said preset.