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The Invar Mounted Ultra-Stable Hard Mounted Retroreflector USHM, is the ultimate in shock and vibration resistance. It is vacuum compatible, thermally stable and tailored to applications where extreme shock and vibration are a concern. 

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Improved Ultra-Stable Hard-Mounted Retroreflectors (USHM)

Cat. No. Clear Aperture
Beam Deviation
Coating Wavelength Range (nm) Reflectance Coating Curve Diagram 3D Model
USHM-10-1 1.0/25 1.0 0.15 34 - - -
USHM-10-2 1.0/25 2.0 0.25 34 - - -
USHM-10-5 1.0/25 5.0 0.60 34 - - -
USHM-10-10 1.0/25 10.0 1.25 34 - - -
USHM-10-30 1.0/25 30.0 3.50 34 - - -

Beam Deviation is the maximum deviation from parallelism, expressed in seconds of arc, of any single return beam from any of the 6 sub-apertures of the retroreflector, when the retroreflector is fully-illuminated.

Exiting Wavefront is the resultant maximum peak-to-valley wavefront deformation from a fully-illuminated retroreflector, where lambda = 633nm.

Certain high accuracy models may be heavier than indicated here. Check with us for actual weight.

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