Arrangement of Bipolar Permanent Magnets into an Array and Its Use

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This invention describes a novel arrangement of bipolar permanent magnets into an array, where internal magnets are sandwiched between two pole plates, and external magnets with opposite magnetization are placed on the outer sides of the plates. This configuration creates a highly homogeneous magnetic field within a defined volume while drastically reducing stray magnetic fields outside the array. The magnetic field strength inside the volume is also increased compared to conventional designs, and the system can be made compact for smaller enclosed volumes.

Use CasesContent extracted from patent full text and abstract with AI.

• Generating highly homogeneous magnetic fields for scientific and industrial experiments (e.g., neutron polarization, NMR, or particle physics).
• Magnetic field shielding or stray field reduction in measurement and analysis devices.
• Magnetic holding or manipulation systems requiring precise and strong internal fields with minimal external interference.
• Medical imaging and diagnostic devices where field homogeneity and minimal interference are crucial.
• Magnetic sensors or calibration setups that need controlled, uniform fields.
• Sensitive neighboring instrument environments where stray magnetic fields could cause operational disturbances.

BenefitsContent extracted from patent full text and abstract with AI.

• Significantly increases the homogeneity of magnetic fields within the target volume.
• Greatly reduces or eliminates long-range stray magnetic fields, minimizing interference with nearby equipment.
• Enables stronger internal magnetic fields compared to standard magnet arrays of similar size and material.
• Allows for more compact designs thanks to efficient field confinement, supporting smaller devices or experimental setups.
• Customizable array sizes and strength to fit different experimental or industrial needs.
• Reduces magnetic shielding requirements and mitigates noise in sensitive environments, improving the reliability and accuracy of measurements.

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Patent Abstract

The invention relates to an array of bipolar permanent magnets (1, 2), wherein at least two bipolar permanent magnets (1, 2) having identical magnetization direction and which form a pair are arranged between two pole plates (3), (4) such that they enclose a volume element together with the pole plates (3), (4), which volume element is open perpendicular to the plane which is delimited by the bipolar permanent magnets (1, 2) and the pole plates (3), (4), wherein, on the sides of the pole plates (3), (4) facing away from the bipolar permanent magnets (1, 2), external bipolar permanent magnets (5, 6) are located, the magnetization of which is opposite the magnetization of the bipolar permanent magnets (1, 2) located between the pole plates (3), (4), and thus the magnetic fields thereof have an antiparallel orientation.