A flexible laser safety brush shroud (10) for providing protection from laser radiation (22) while testing a unit (38) under test whose output optics are capable of rotating while the laser is energized. The brush shroud allowing large and rapid rotation of the unit under test thereby avoiding physical damage to the laser tester or unit under test. By extension, any brush-like structure that is used to confine or exclude radiation of any wavelength, coherent or not, within or from a region of space, while allowing relative motion between a structure to which the brush is attached and another structure against which the brush is applied.
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