IMAGING SYSTEM INCLUDING LENS WITH LONGITUDINAL CHROMATIC ABERRATION, ENDOSCOPE AND IMAGING METHOD

摘要

An imaging system (500) includes an optical unit (100) that captures, from a scene (900), first images indifferent wavelength ranges when the scene (900) is illuminated with not- structured light and second images of different wavelength ranges when the scene (900)is illuminated with structured light. Thereby an imaging lens unit (112) with longitudinal chromatic aberration is arranged between the scene (900) and an imaging sensor unit (118). A depth processing unit (200) may generate depth information (DI)on the basis of the second images by using optical triangulation. A sharpness processing unit (300) uses the depth information (DI) to generate an output image (OImg)by combining the first images. The optical unit (100) of the imaging system (500) may be implemented in an endoscope, by way of example.