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Compliance and Transmissibility Curves

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Compliance and Transmissibility Curves

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The primary goal of an optical table system is to eliminate relative motion between position sensitive components across the table work surface. The vibration isolator system is designed to filter floor vibration before it can reach the table top and disturb an optical beam path. The honeycomb structure of the optical table is designed to rigidly resist deflection from moving loads or any vibration that passes through the isolation system.Optical table systems can be characterized by compliance curves for the optical table and transmissibility curves for the isolation system. Taken together, these two plots show the primary performance capabilities of the optical table system.The transmissibility curve shows the mechanical filtering properties for the isolator leg—in other words, it gives an indication of how much floor vibration will be transmitted through the leg to the table top. The compliance curve shows the dynamic response of the table top in a free space condition—in other words, it gives an indication of how the surface will change shape in response to vibration.

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