Abstract: An MTF testing apparatus including a plurality of telescopic cameras each mounted at a fixed predetermined position on a camera holder, each camera receiving an image projected by at least one lens of a single device under test. A processor is coupled to the telescopic cameras. is the processor configured to receive image data from every telescopic camera and perform a plurality of MTF measurements, the telescopic cameras are mounted on the camera holder such that every telescopic camera captures image data resulting in an MTF measurement at a different field position of the lens. The camera holder comprises a holding structure and at least two brackets elongated elements projecting between first and second end portions, the end portions being releasably mounted on the holding structure, and at least two cameras are mounted on every bracket and the brackets are individually detachable from the holding structure.

Abstract: A device for measuring imaging properties of an optical system including: a rigid holding device; and MTF measuring devices arranged at predefined positions of the holding device such that, by each of the MTF measuring devices, a modulation transfer function can be measured at respective different, predefinable, angular positions in the image field of the optical system; wherein the holding device includes at least a first holder and a second holder; the MTF measuring devices include a first group and a second group; the first holder holds the first group at first positions so that the first group are arranged on a first spherical shell; the second holder holds the second group at second positions so that the second group are arranged on a second spherical shell; and the first spherical shell and the second spherical shell have different radii and are arranged so as to be mutually concentric.

Abstract: An MTF testing apparatus including a plurality of telescopic cameras each mounted at a fixed predetermined position on a camera holder, each camera receiving an image projected by at least one lens of a single device under test. A processor is coupled to the telescopic cameras. is the processor configured to receive image data from every telescopic camera and perform a plurality of MTF measurements, the telescopic cameras are mounted on the camera holder such that every telescopic camera captures image data resulting in an MTF measurement at a different field position of the lens. The camera holder comprises a holding structure and at least two brackets elongated elements projecting between first and second end portions, the end portions being releasably mounted on the holding structure, and at least two cameras are mounted on every bracket and the brackets are individually detachable from the holding structure.

Abstract: A device for measuring the MTF or another imaging property of an optical system has a light pattern generating unit that generates a light pattern in a focal plane of the optical system. A reference axis of the device is oriented along an optical axis of the optical system. The device further comprises an arrangement of N, N=2, 3, 4, . . . , cameras that are separated from one another. Each camera has an objective and a light sensor that is arranged in a focal plane of the objective. The cameras are arranged on a side opposite the light pattern generating unit such that the light sensor of each camera detects an image of exactly one section of the light pattern. At least one beam deflecting element is arranged between the optical system and at least one of the cameras such that it deflects light away from the reference axis before the light impinges on the at least one camera.

Abstract: A device for measuring the MTF or another imaging property of an optical system has a light pattern generating unit that generates a light pattern in a focal plane of the optical system. A reference axis of the device is oriented along an optical axis of the optical system. The device further comprises an arrangement of N, N=2, 3, 4, . . . , cameras that are separated from one another. Each camera has an objective and a light sensor that is arranged in a focal plane of the objective. The cameras are arranged on a side opposite the light pattern generating unit such that the light sensor of each camera detects an image of exactly one section of the light pattern. At least one beam deflecting element is arranged between the optical system and at least one of the cameras such that it deflects light away from the reference axis before the light impinges on the at least one camera.