Optically sparse primary aperture for high spatial resolution imaging

An optically sparse primary aperture for high spatial resolution imaging, comprising:

• a central sub-aperture;
• and
• a plurality of peripheral sub-apertures, wherein the plurality of peripheral sub-apertures form concentric patterns around the central sub-aperture, wherein,
• size of the central sub-aperture and the plurality of peripheral sub-apertures is in a proportionate relationship, and
• the plurality of the peripheral sub-apertures forms at least two concentric zones, wherein each concentric zone has equal number of peripheral sub-apertures from among the plurality of peripheral sub-apertures, and the sizes of the peripheral sub-apertures in each two adjacent concentric zones have a proportionate relationship, wherein in the concentric zone, the plurality of peripheral sub-apertures lie at an equal distance from the central sub-aperture,
• wherein the plurality of peripheral sub-apertures is equally distributed in three concentric zones, comprises:
• a first concentric zone having the peripheral sub-apertures with diameter one third of that of the diameter of the central sub-aperture, wherein the plurality of peripheral sub-apertures of the first concentric zone are at a first distance from the central sub-aperture;
• a second concentric zone having the peripheral sub-apertures with diameter one third of that of the diameter of the central sub-aperture, wherein the plurality of peripheral sub-apertures of the second concentric zone are at a second distance from the central sub-aperture;
• and
• a third concentric zone having the peripheral sub-apertures with diameter equal to the diameter of the central sub-aperture, wherein the plurality of peripheral sub-apertures of the third concentric are at a third distance from the central sub-aperture,
• wherein the first distance is less than the second distance, and the second distance is less than the third distance.