Method for manufacturing a glass wafer of high quality, glass wafer, glass part element, stack, augmented reality device and use

A glass wafer, comprising:

• a first main surface;
• and
• a second main surface opposite the first main surface, a material of the glass wafer having a refractive index N,
• wherein, for each of a plurality of sub-domains of a maximal extension D of the glass wafer, the plurality of sub-domains are located within an effective domain of the glass wafer:
• from a thickness distribution of the glass wafer between the first main surface and the second main surface of a respective one of the plurality of sub-domains, a specific angle E is configured for being determined, wherein the specific angle F is determined as an angle of a planar contribution to a change in the thickness distribution;
• wherein the glass wafer has a maximal thickness of 2 mm or less,
• wherein the glass wafer has a specific thickness t,
• wherein the glass wafer is configured with respect to at least one parameter of the glass wafer such that for each of the plurality of sub-domains a local quality index LQI of the glass wafer is equal to or smaller than a threshold T, with the threshold T being defined as
• T
• =
• ε
• max
• D
• wherein εmax is 360 arcsec or less,
• wherein the local quality index LQI is defined as:
• LQI
• =
• ❘
• "\[LeftBracketingBar]"
• ε
• ❘
• "\[RightBracketingBar]"
• t
• ⁢
• N
• 2
• -
• 1
• .