Abstract: A diffractive optical element (10) for a test interferometer (100) measures a shape of an optical surface (102). Diffractive shape measuring structures (16) are arranged on a used surface (14) of the element and generate a test wave (122) irradiating the surface when the element is arranged in the interferometer. At least one test field (18) several profile properties of test structures contained in the test field. The profile properties characterize a profile line of the test structures extending transversely with respect to the used surface and include a flank angle of the profile line, a profile depth and a depth of a microtrench in a bottom region of a trench-shaped profile of the test structures. The test field is arranged at one location of the used surface instead of the diffractive shape measuring structures such that the test field is surrounded by several diffractive shape measuring structures.

Abstract: A hatchback for an automobile has an essentially peripheral supporting frame (1) designed as a hollow metal section, with a windshield area and a wall area, with a connecting section (2) arranged transversely in the supporting frame (1) at the transition of the windshield area and wall area, with a windshield (3) mounted on the supporting frame (1) in the windshield area and with an outside door panel (4) mounted on the supporting frame (1) in the wall area, whereby hinge brackets (5) that are movable with the supporting frame (1) are mounted on the upper edge of the supporting frame (1) in the windshield area and are pivotably connectable by at least one hinge element (8) each to stationary hinge blocks (7) mounted on a stationary body part (6) when the automobile hatchback is installed.

Abstract: A hatchback for an automobile has an essentially peripheral supporting frame (1) designed as a hollow metal section, with a windshield area and a wall area, with a connecting section (2) arranged transversely in the supporting frame (1) at the transition of the windshield area and wall area, with a windshield (3) mounted on the supporting frame (1) in the windshield area and with an outside door panel (4) mounted on the supporting frame (1) in the wall area, whereby hinge brackets (5) that are movable with the supporting frame (1) are mounted on the upper edge of the supporting frame (1) in the windshield area and are pivotably connectable by at least one hinge element (8) each to stationary hinge blocks (7) mounted on a stationary body part (6) when the automobile hatchback is installed.