planparallel
Planparallel is a term describing a geometry in which two opposite faces of a object are parallel, resulting in a uniform thickness across the part. The concept is often used interchangeably with plane-parallel, particularly in optics and precision engineering. Planparallel components may be flat plates, substrates, or windows designed to maintain consistent thickness and predictable optical or mechanical behavior.
In optics, planparallel plates are used as windows, beam splitters, reference standards, or light-path components. The
In manufacturing and metrology, planparallelism and planarity are key tolerances. Planparallelism refers to how closely opposite
Planparallel surfaces find use across optics, semiconductor substrates, precision instrumentation, and other fields requiring uniform thickness