A detector (110) for an optical detection of at least one object (112) is proposed. Further, the invention relates to a method for optical detection of at least one object (112) and to various uses of the detector (110). The detector (110) comprises: —at least one optical sensor (114), the optical sensor (114) having at least one sensor region (132), the sensor region (132) comprising at least one curved substrate (142) and at least one film (134) having a photoconductive material (136), wherein the film (134) is placed on at least one surface (140, 172) of the curved substrate (142), wherein the optical sensor (114) is designed to generate at least one sensor signal in a manner dependent on an illumination of the sensor region (132) by a light beam (124); —at least one transfer device (120), the transfer device (120) being adapted to transfer the light beam (124) from the object (112) to the optical sensor (114), thereby being adapted to guide the light beam (124) to the film (134) located on the curved substrate (142); and—at least one evaluation device (154), wherein the evaluation device (154) is designed to generate at least one item of information on a position of the object (112) by evaluating the sensor signal of the optical sensor (114). Thereby, a simple, cost-efficient and, still, reliable detector (110) for an accurate determining of a position of at least one object (112) in space is provided.