Freeform geometrical optics II: From
parametric representation to CAD/CAM
Posted on 2019-11-22 - 15:40
Freeform optical surfaces are of great importance because of two main properties.
The first is their ability to enhance the image quality of image-forming optical systems while
the second is their inherent reduction in the number of surfaces in image and non-image
forming optical systems. However, the main characteristic of freeform surfaces is that they
lack symmetry about any spatial axis. This attribute allows describing freeform surfaces with
a mathematical parametric representation. Unfortunately, parametric representation can be
extremely extended. On the other hand, when describing freeform surfaces, the explicit
representation is commonly preferred because of its compactness and CAD-format exportable
easiness. Parametrically represented freeform surfaces can be nonetheless exported to a CAD
format with no significant departure of surface shape, as shown here. The vector method
presented here guarantee that the surface’s sampling density be proportional to the irradiance
on the surface.
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Grillon, Thibault; Valencia-Estrada, Juan; Garcia-Marquez, Jorge; espinoza-garcia, alejandro; Bechadergue, Bastien (2019). Freeform geometrical optics II: From
parametric representation to CAD/CAM. Optica Publishing Group. Collection. https://doi.org/10.6084/m9.figshare.c.4674821.v1
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AUTHORS (5)
TG
Thibault Grillon
JV
Juan Valencia-Estrada
JG
Jorge Garcia-Marquez
ae
alejandro espinoza-garcia
BB
Bastien Bechadergue