Patent ID: 9664907
Date: 2017-05-30
CPC Classifications: G02B

Claim:
1. An optical detection unit for use in an imaging system, the optical detection unit comprising two detector arrays each in the form of an array of spaced-apart light sensitive regions; and a spatial beam shaper structure accommodated in an optical path of light propagating towards the detector arrays, wherein the detector arrays are arranged such that light sensitive regions of one detector array are aligned with spaces between the light sensitive regions of the other detector array with certain overlap regions between corresponding light sensitive regions of the two detector arrays, the spatial beam shaper structure comprises a light collecting surface having a pattern in the form of multiple surface regions comprising regions of at least two different optical properties arranged in an alternating fashion and is configured for affecting light impinging thereon to provide a substantially smooth light profile of at least one optical property, and an interface region between each two locally adjacent regions of the different optical properties having said at least two different optical properties to provide substantially smooth transition of said different optical properties within the interface region; and said spatial beam shaper is configured for directing first light components, collected by the regions of one optical property, to the light sensitive regions of one detector array, and directing second light components, collected by the regions of the other optical property, to the light sensitive regions of the other detector array, said interface region being configured as an image of the overlap region in the detector arrays.