Method for calibration of a replication boundary of a virtual retinal display based on a beamlet replication, beamlet replication-based virtual retinal display, and smart glasses

A method for at least one field calibration of a replication boundary of a beamlet replication-based virtual retinal display with a pupil tracking device, the method comprising:

• determining at least a first pupil position of a user eye of a user of the virtual retinal display;
• repeatedly and alternately projecting at least one beamlet of the virtual retinal display and at least one beamlet replica of the beamlet into a sub-area of an eyebox of the virtual retinal display corresponding to the first pupil position of the user eye, wherein the sub-area of the eyebox overlaps at least with a portion of the replication boundary to be calibrated of the virtual retinal display in the first pupil position;
• in at least one calibration step:
• (i) shifting an image content of the beamlet projected at a first time in the sub-area of the eyebox and image content of the beamlet replica projected at a second time in the sub-area of the eyebox relative to one another by changing a setting of the virtual retinal display and/or smart glasses including the virtual retinal display, at least in an eyebox plane of the virtual retinal display, and/or (ii) adjusting a distortion and/or optical distortion of the image content of the beamlet projected at the first time in the sub-area of the eyebox and a distortion and/or an optical distortion of the image content of the beamlet replica projected at the second time in the sub-area of the eyebox relative to each other, by changing a setting of the virtual retinal display and/or the smart glasses including the virtual retinal display.

A beamlet replication-based virtual retinal display having a field-calibratable, replication boundary, comprising:

• a pupil tracking device configured to determine a first pupil position of a pupil of a user eye of a user of the virtual retinal display;
• at least one optical system including at least one laser projector unit with a MEMS mirror system configured to repeatedly alternating project at least one beamlet and at least one beamlet replica into a sub-area of an eyebox corresponding to the first pupil position of the user eye, wherein the sub-area of the eyebox in the first pupil position overlaps at least with a portion of the calibratable replication boundary of the virtual retinal display;
• and
• at least one setting unit:
• configured to shift an image content projected at a first time via the beamlet into the sub-area of the eyebox and an image content projected at a second time via the beamlet replica into the sub-area of the eyebox relative to each other by a mechanical and/or electronic setting operation of the virtual retinal display and/or smart glasses including the virtual retinal display, a least in an eyebox plane of the virtual retinal display, and/or configured to distort and/or optically distort the image content projected at the first time via the beamlet into the sub-area of the eyebox and the image content projected at the second time via the beamlet replica into the sub-area of the eyebox by a mechanical and/or electronic adjustment operation of the virtual retinal display and/or the smart glasses including the virtual retinal display.

Smart glasses, comprising:

• a beamlet replication-based virtual retinal display having a field-calibratable, replication boundary, including:
• a pupil tracking device configured to determine a first pupil position of a pupil of a user eye of a user of the virtual retinal display;
• at least one optical system including at least one laser projector unit with a MEMS mirror system configured to repeatedly alternating project at least one beamlet and at least one beamlet replica into a sub-area of an eyebox corresponding to the first pupil position of the user eye, wherein the sub-area of the eyebox in the first pupil position overlaps at least with a portion of the calibratable replication boundary of the virtual retinal display;
• and
• at least one setting unit:
• configured to shift an image content projected at a first time via the beamlet into the sub-area of the eyebox and an image content projected at a second time via the beamlet replica into the sub-area of the eyebox relative to each other by a mechanical and/or electronic setting operation of the virtual retinal display and/or smart glasses including the virtual retinal display, a least in an eyebox plane of the virtual retinal display, and/or configured to distort and/or optically distort the image content projected at the first time via the beamlet into the sub-area of the eyebox and the image content projected at the second time via the beamlet replica into the sub-area of the eyebox by a mechanical and/or electronic adjustment operation of the virtual retinal display and/or the smart glasses including the virtual retinal display.