1. An interferometric imaging device for imaging a light scattering object comprising: a broadband light source arranged to generate a beam of radiation that is swept in frequency; a beam divider for separating the beam into reference and sample arms, wherein the sample arm contains the light scattering object to be imaged; optics to focus said beam of radiation to a line focus on the light scattering object to be imaged, said line focus having a long axis and a narrow axis; collection optics for combining light scattered from the object and light returning from the reference arm, said collection optics also including an astigmatic element for focusing the light along the long axis differently than along the narrow axis; a one dimensional sensor array arranged such that the narrow dimension of the line focus is substantially imaged directly to the narrow axis of the sensor array and such that the line focus is defocused along its long axis on the sensor array; and a processor for generating an image in response to signals generated by the detector.