imaginarius

Similarly, Kant now suggests that each of the three transcendental ideas of reason at issue in the Dialectic serves as an imaginary point (focus imaginarius) towards which our investigations hypothetically converge.

Kant's Critique of Metaphysics Grier, Michelle 2007

This point -- though a mere idea (focus imaginarius), that is, not a point from which the conceptions of the understanding do really proceed, for it lies beyond the sphere of possible experience -- serves, notwithstanding, to give to these conceptions the greatest possible unity combined with the greatest possible extension.

The Critique of Pure Reason Immanuel Kant 1764

“going-after” or pursuit of the “perpetually distant goal” [49] or focus imaginarius of complete objective determination,

Paul Natorp Kim, Alan 2003