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Wedge Lens

Controls: Location of once center of curvature relative to some other item.  It may be related to another center of curvature, a plane in space, or a physical datum.

Related Terms: Edge Thickness Difference (ETD), Edge Runout (ERO), Wedge, Mechanical Wedge, Total Indicated Runout (TIR), Beam Deviation

Units: Linear units or angular units

Specification Must Contain: Relationship between a center of curvature and the reference.

Optimax Preferred Specification: ETD

Reasons: Directly measured on the machine or with little specialized equipment

Manufacturing Standards: ISO-10110-6

wedge lens final 3

For More Information
Optimax’s Technical Note on Centration

Optimax’s Tolerance Attributes Video