Pupil measuring apparatus

Details Pupil measuring apparatus Pupil measuring apparatus

2006-04-10

2008-08-05

Mack, Ricky (Department: 2873)

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

Reexamination Certificate

active

07407287

ABSTRACT:
A pupil measuring apparatus comprises a mark1dplaced in a space where a background is observable from the two eyes E; a mark moving device1efor moving the mark1dbetween the two eyes E and the background; an illumination optical system1gfor illuminating the two eyes E from the background side; two cameras A, B for respectively imaging the two pupils PP; calculating means2ato2efor calculating areas or diameters of the respective pupils thus imaged, from video signals of the two cameras A, B; and a display3for providing an output of a graph of change in the areas or diameters calculated against a position of the mark1dor a time associated with the position on a single screen.

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