Correction of localized shape errors on optical surfaces by altering the localized density of surface or near-surface layers

   
   

Figure errors are corrected on optical or other precision surfaces by changing the local density of material in a zone at or near the surface. Optical surface height is correlated with the localized density of the material within the same region. A change in the height of the optical surface can then be caused by a change in the localized density of the material at or near the surface.

La figura errores es corregida en superficies ópticas u otras de la precisión cambiando la densidad local del material en una zona en o cerca de la superficie. La altura superficial óptica se correlaciona con la densidad localizada del material dentro de la misma región. Un cambio en la altura de la superficie óptica se puede entonces causar por un cambio en la densidad localizada del material en o cerca de la superficie.

 
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