Optometry device for testing an individual's eye, set of pictures for said device and display unit of such set of pictures

An optometry device for testing an individual's eye, comprising:

• a refraction test unit having a vision correction optical system for providing different vision correction power values;
• and
• a display unit comprising:
• a projection optical system adapted to produce from a scene picture and from a visual test picture including a functional zone, respectively:
• a scene image produced along a scene optical path of said projection optical system at a scene distance from the individual's eye;
• and
• a visual test image produced along a visual test optical path of said projection optical system at a visual test distance from the individual's eye smaller than or equal to said scene distance of projection, said visual test image being superimposed at least partially with said scene image;
• and
• at least one control unit adapted to control said projection optical system, wherein
• said at least one control unit is configured to define in the scene picture at least one scene zone implying transparency for the corresponding virtual scene image and in the superimposition area between the visual test image and the scene image, allowing the individual's eye to observe the functional zone of the virtual visual test image without contrast decrease, at the visual test distance.

A set of pictures comprising a visual test picture and a scene picture useful for an optometry device having a vision correction optical system for providing different vision correction power values for testing an individual's eye, the optometry device including a projection optical system adapted to produce from corresponding scene picture and corresponding visual test picture including a functional zone, respectively:

• a scene image produced along a scene optical path of said projection optical system at a scene distance from the individual's eye;
• and
• a visual test image produced along a visual test optical path of said projection optical system at a visual test distance from the individual's eye smaller than or equal to said scene distance of projection, being superimposed at least partially with the scene image;
• wherein the scene picture comprises at least one scene zone implying transparency for the corresponding virtual scene image and in the superimposition area between the visual test image and the scene image allowing the individual's eye to observe the functional zone of the visual test image without contrast decrease at the visual test distance.