Monocentric reception arrangement
A monocentric reception arrangement comprising an optical system ( 1 ), in the spherical focal plane (BF) of which the imaged overall image of an object field is subdivided into partial images by field lenses ( 3.1 ) of a field lens array ( 3 ) arranged here and the partial beams in each case involved in a partial image are collimated by way of a downstream collimator lens ( 6.1 ) in each case onto in each case one receiver ( 5.1 ) of an optoelectronic receiver array ( 5 ). An aperture stop is arranged in a plane of each receiver surface of one of the receivers ( 5.1 ), the image of said aperture stop being the entrance pupil, in the center of which lies the common center of curvature (MP) of the spherical entrance surface ( 2 ) and the curvature of the field lens array ( 3 ). Each partial beam illuminates one of the receiver surfaces with the same beam diameter.
1. A monocentric reception arrangement comprising:
an optical system having a spherical entrance surface, an exit surface and a spherical focal plane (BF), wherein centers of curvature of the spherical entrance surface and of the spherical focal plane (BF) coincide in a common center of curvature (MP) located in a center of an entrance pupil (EP) of the reception arrangement;
an optoelectronic receiver array arranged downstream of the optical system, the receiver array comprising individual receivers;
a reception channel formed by each of the individual receivers and the optical system, each optical axis (A) of each reception channel passing through the center of curvature (MP);
the exit surface of the optical system being formed by field lens surfaces of field lenses of a field lens array, the field lenses being arranged on the spherical focal plane (BF), each field lens with a respective downstream collimator lens of a collimator array being assigned to one of reception channels, so that partial beams passing through the entrance pupil (EP) and focused into the spherical focal plane (BF) are each directed onto that one of the individual receivers positioned downstream of the field lens covering such area of the spherical focal plane (BF) into which a respective partial beam is focused; and
a receiver surface of each of the receivers comprising an aperture stop (AP) representing the entrance pupil (EP) so that all partial beams on the receiver surface passing through a respective one of the reception channels have the same beam diameter and one axial beam of each of these partial beams intersects the optical axis (A) of the reception channel.
2. The monocentric reception arrangement according to claim 1 , wherein the field lenses are square and adjoin one another without gaps.
3. The monocentric reception arrangement according to claim 1 , wherein the optical system is a monolithic lens block.
4. The monocentric reception arrangement according to claim 1 , wherein the optical system has at least two lens bodies.
5. The monocentric reception arrangement according to claim 4 , wherein the at least two lens bodies are made of different materials.
6. The monocentric reception arrangement according to claim 4 , wherein the at least two lens bodies are a first lens body and a second lens body spaced apart from one another.
7. The monocentric reception arrangement according to claim 1 , wherein the receivers are avalanche photodiodes with a round receiver surface.
8. The monocentric reception arrangement according to claim 1 , wherein each collimator lens has an identical focal length and wherein the receiver surfaces of the receivers forming the receiver array are arranged on a spherical surface (BE), the spherical surface having a center of curvature that coincides with the common center of curvature (MP) of the spherical entrance surface and the spherical focal plane (BF).
9. The monocentric reception arrangement according to claim 1 , wherein collimator lenses have different focal lengths and the receiver surfaces of the receivers forming the receiver array or, in groups, the receiver surfaces of the receivers forming a partial array are arranged in tangential planes (TE) to a spherical surface (BE) having a center of curvature coinciding with the common center of curvature (MP) of the spherical entrance surface and the spherical focal plane (BF).