Definition of visual ray in English:

visual ray


  • An imaginary line representing the path of light from an object to the eye.

    • ‘Euclid adhered to the centrifugal theory of visual rays.’
    • ‘In contrast to Plato, who argued that the visual ray, which proceeded from the eye, requires the support of and coalesces with external light, Archytas explained vision in terms of the visual ray alone.’
    • ‘Alberti has here applied some of the geometric elaboration of Euclid's Optics to the visual rays that Plato described in the Timaeus as an ocular ‘fire’ mixing in sympathy with external light.’
    • ‘In this instance, the tempter not only interferes with visual rays but also bypasses the outer instruments of sight altogether.’