Devices and methods for adjusting lens positions based on encoded light patterns

A method for providing position guidance light toward an eye of a user performed at a device including a first device and a second device, the method comprising:

• at the first device of a device including a first light source, a second light source, and a first optical element:
• outputting first light from the first light source;
• outputting second light from the second light source;
• and
• steering, with the first optical element, the first light and the second light in distinct directions so that the first light and the second light are spatially separated on a first reference plane;
• and
• at the second device including a third light source, a fourth light source, and a second optical element:
• outputting third light from the third light source;
• outputting fourth light from the fourth light source;
• and
• steering, with the second optical element, the third light and the fourth light in distinct directions so that the third light and the fourth light are spatially separated on a second reference plane substantially parallel or perpendicular to the first reference plane for providing a cue for adjusting a distance of the eye from the device, wherein:
• the first light and the third light are directed to intersect at a first location corresponding to a predefined eye relief of the device such that a combination of the first light and the third light entering a pupil of the eye indicates that the eye receiving both the first light and the third light is at the predefined eye relief, wherein the predefined eye relief corresponds to a design eye relief position for the device;
• and
• the second light and the fourth light are directed to intersect at a second location such that a combination of the second light and the fourth light entering the pupil of the eye indicates that the distance between the eye receiving both the second light and the fourth light shorter or longer than the predefined eye relief of the device.