A device for hybrid optoacoustic and ultrasonographic imaging of an object, comprising an irradiation unit (2, 3) configured to irradiate the object with electromagnetic radiation, in particular light, and a transducer unit comprising a plurality of transducer elements (5 - 7), the transducer elements (5 - 7) being configured - to emit ultrasound waves impinging on the object and to detect ultrasound waves which are reflected and/or transmitted by the object upon impinging on the object, and - to detect ultrasound waves which are generated in the object upon irradiation with electromagnetic radiation, the transducer elements comprising - first transducer elements being designed for emitting ultrasound waves impinging on the object and detecting ultrasound waves which are reflected and/or transmitted by the object upon impinging on the object, the first transducer elements having a first size and a first pitch, and - second transducer elements being designed for detecting ultrasound waves which are generated in the object upon irradiation with electromagnetic radiation, the second transducer elements having a second size and a second pitch, wherein the first size of the first transducer elements is smaller than the second size of the second transducer elements and/or the first pitch of the first transducer elements is smaller than the second pitch of the second transducer elements, characterized in that the transducer elements (5 - 7) are arranged along a curved concave line, or a curved concave surface, wherein - the first transducer elements are arranged along a curved concave line or curved concave surface to cover a first angular range around the object, and the second transducer elements are arranged along a curved concave line or curved concave surface to cover a second angular range around the object, wherein the second angular range is larger than the first angular range, and/or - the first transducer elements are arranged along a curved concave line or curved concave surface to cover a first angular range around the object, and the first transducer elements and the second transducer elements are arranged along a curved concave line or curved concave surface to cover a third angular range around the object, wherein the third angular range is larger than the first angular range, wherein the first transducer elements are also designed for detecting ultrasound waves which are generated in the object upon irradiation with electromagnetic radiation. - to emit ultrasound waves impinging on the object and to detect ultrasound waves which are reflected and/or transmitted by the object upon impinging on the object, and - to detect ultrasound waves which are generated in the object upon irradiation with electromagnetic radiation, the transducer elements comprising - first transducer elements being designed for emitting ultrasound waves impinging on the object and detecting ultrasound waves which are reflected and/or transmitted by the object upon impinging on the object, the first transducer elements having a first size and a first pitch, and - second transducer elements being designed for detecting ultrasound waves which are generated in the object upon irradiation with electromagnetic radiation, the second transducer elements having a second size and a second pitch, wherein the first size of the first transducer elements is smaller than the second size of the second transducer elements and/or the first pitch of the first transducer elements is smaller than the second pitch of the second transducer elements, characterized in that the transducer elements (5 - 7) are arranged along a curved concave line, or a curved concave surface, wherein - the first transducer elements are arranged along a curved concave line or curved concave surface to cover a first angular range around the object, and the second transducer elements are arranged along a curved concave line or curved concave surface to cover a second angular range around the object, wherein the second angular range is larger than the first angular range, and/or - the first transducer elements are arranged along a curved concave line or curved concave surface to cover a first angular range around the object, and the first transducer elements and the second transducer elements are arranged along a curved concave line or curved concave surface to cover a third angular range around the object, wherein the third angular range is larger than the first angular range, wherein the first transducer elements are also designed for detecting ultrasound waves which are generated in the object upon irradiation with electromagnetic radiation.