Why should I choose optical technology for my encoder?！

When an application requires very high resolution (below 100nm), high accuracies (linear accuracy of 1-3um per meter) or a low SDE (Sub Divisional Error), there is still no replacement for an optical encoder. Roundss is a world leader in design and manufacture of high performance, small form-factor optical encoders. 
With resolutions up to 1.2nm and accuracies of up to 1um/m, there is still no threat from the magnetic encoder technology on the optical one, when a customer requires such high performance products

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