lochscheibe

Lochscheibe is a German term that literally translates to "hole disk" and is used in technical contexts to describe a perforated circular plate that serves various functions depending on the field. The concept is descriptive rather than a single standardized device name, and in German-language literature the term can refer to any disk with holes designed to influence flow, optics, or acoustics.

In engineering, a Lochscheibe functions as a flow restrictor, diffuser or screen within pipes, engines, or filtration assemblies. Its performance is governed by the hole size, spacing, pattern, and the thickness of the disk, which together determine pressure drop, filtration efficiency, and flow distribution.

In acoustics, perforated discs known as Lochscheiben are used to diffuse or damp sound. When paired with an underlying cavity or backing material, they produce attenuation across specific frequency ranges and are common in mufflers, enclosures, and reactive silencers.

In optics and metrology, a Lochscheibe can refer to a diaphragm or target mask containing apertures used to calibrate imaging systems, project known patterns, or control light transmission in experimental setups. Hole patterns may be arranged in regular grids, concentric rings, or other geometries depending on the measurement task.

Manufacturing and materials: Lochscheiben are typically made of metal (such as stainless steel or aluminum) or ceramics. Hole diameters can range from micrometers to millimeters, and manufacturing methods include drilling, laser cutting, or etching. Tolerances and finish affect sealing, optical throughput, and flow characteristics.