What is the curve classification of ...

I am working on the analysis of ray-tracing of the eye.

What is the general name of the geometric curve on which contacting, radiated (not parallel!), peripheral(!) rays would be re-focused into rays parallel to the curve’s axis?

I am working on the analysis of ray-tracing of the eye.

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The name of the curve that reflects the rays radiating from a specific point of focus parallel to the curves' axis is called a parabola.

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