Abstract: A method for measuring the depth of a surface of a test object may include projecting a colored fringe pattern formed by a sequence of colored fringes onto a surface of the test object, and detecting and evaluating a fringe pattern reflected by the surface of the test object using an evaluation device. The colored fringe pattern and the evaluation device may be designed such that the depth of the surface of the test object is measured based on the sequence of colored fringes of the reflected fringe pattern and based on a sequence of fringe widths of the reflected fringe pattern.

Abstract: An arrangement is disclosed for increasing dynamics in color-coded triangulation by using an adapted narrow band color filter. Spectral passage ranges of the color filter overlap with sensitive spectral ranges of a camera sensor. However, the spectral passage ranges are, in contrast to the sensitive spectral ranges of the camera sensor, spectrally disjunct, and the transmitted colors can therefore be clearly identified.

Abstract: A method for measuring the depth of a surface of a test object may include projecting a colored fringe pattern formed by a sequence of colored fringes onto a surface of the test object, and detecting and evaluating a fringe pattern reflected by the surface of the test object using an evaluation device. The colored fringe pattern and the evaluation device may be designed such that the depth of the surface of the test object is measured based on the sequence of colored fringes of the reflected fringe pattern and based on a sequence of fringe widths of the reflected fringe pattern.

Abstract: An endoscope for determining the depth of a partial area of a cavity by a triangulation analysis may include a projection channel for projecting a pattern onto a surface of the cavity and an imaging channel provided for imaging an image of the projected pattern reflected by the surface of the cavity. The projection channel may have at least one diffractive optical element for producing the pattern, a collimator, and a focusing lens. The focusing lens may be arranged between the collimator and the diffractive optical element.

Abstract: An endoscope for determining the depth of a subregion of a cavity may include at least one imaging channel having a first optical axis, with at least one first optical deflection device arranged in the at least one imaging channel. The optical deflection device may be designed to transversely offset the first optical axis parallel to the first optical axis.

Abstract: An arrangement is disclosed for increasing dynamics in color-coded triangulation by using an adapted narrow band color filter. Spectral passage ranges of the color filter overlap with sensitive spectral ranges of a camera sensor. However, the spectral passage ranges are, in contrast to the sensitive spectral ranges of the camera sensor, spectrally disjunct, and the transmitted colors can therefore be clearly identified.

Abstract: Three-dimensional detection of an interior space of a body is performed by an endoscope in which a projection device projects a color pattern onto a region of the interior space and a detecting device detects an image of the color pattern projected onto the region. The projection and detection devices are positioned at least in part in a distal end region of an elongate endoscope extent. The distal end region can be angled up to 180° in relation to the original elongate endoscope extent. Active triangulation can be used in evaluating 3D images of the region to simply and effectively enlarge the 3D images. Such endoscopes can be used particularly advantageously in minimally invasive surgery or in industrial endoscopy.