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US 2026/0267055 A1Published application
Gradient Coating Apparatus
AssigneeEnvisics Ltd
InventorYiren Xia
Life of this patent
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Abstract
The disclosure provides methods of coating pluralities of waveguides for head-up display by providing certain groupings and arrangements of the waveguides in various opposing orientations, and coating a first group of waveguides and a second group of waveguides through a shadow mask comprising a stacked array of hexagonal apertures comprising a series of alternating first sections having decreasing aperture width and second sections having increasing aperture width, wherein the first sections are aligned with odd-numbered rows of waveguides and the second sections are aligned with even-numbered rows of waveguides.
Claims21
A method of coating a plurality of waveguides for head-up display, the method comprising:
- forming a first group of waveguides by:
- arranging a first row of one or more first waveguides in a first orientation, the first row of one or more first waveguides being an odd-numbered row of waveguides;
- and
- arranging a second row of one or more second waveguides in a second orientation, wherein the second orientation is opposite the first orientation, such that the first row of one or more first waveguides opposes the second row of one or more second waveguides, and such that the first row of one or more first waveguides is spaced apart from the second group of one or more second waveguides by a first row spacing, the second row of one or more second waveguides being an even-numbered row of waveguides;
- forming a second group of waveguides by:
- arranging a third row of one or more third waveguides in the first orientation, the third row of one or more third waveguides being an odd-numbered row of waveguides;
- and
- arranging a fourth row of one or more fourth waveguides in the second orientation such that the third row of one or more third waveguides opposes the fourth row of one or more fourth waveguides, and such that the third row of one or more third waveguides is spaced apart from the fourth row of one or more fourth waveguides by a second row spacing, the fourth row of one or more fourth waveguides being an even-numbered row of waveguides;
- spacing the first group of waveguides and second group of waveguides such that a gap between the first group of waveguides and second group of waveguides is greater than the first row spacing, and the gap between the first group of waveguides and second group of waveguides is greater than the second row spacing;
- and
- coating the first group of waveguides and second group of waveguides through a shadow mask comprising a stacked array of hexagonal apertures comprising a series of alternating first sections having decreasing aperture width and second sections having increasing aperture width, wherein the first sections are aligned with odd-numbered rows of waveguides and the second sections are aligned with even-numbered rows of waveguides.
8 more elements
A coating device comprising:
- a sample carrier;
- a plurality of waveguides arranged on the sample carrier in a first group of waveguides and a second group of waveguides,
- wherein the first group of waveguides comprises:
- a first row of one or more first waveguides arranged in a first orientation, the first row of one or more first waveguides being an odd-numbered row of waveguides;
- and
- a second row of one or more second waveguides arranged in a second orientation, wherein the second orientation is opposite the first orientation, such that the first row of one or more first waveguides opposes the second row of one or more second waveguides, and such that the first row of one or more first waveguides is spaced apart from the second group of one or more second waveguides by a first row spacing, the second row of one or more second waveguides being an even-numbered row of waveguides;
- wherein the second group of waveguides comprises:
- a third row of one or more third waveguides arranged in the first orientation, the third row of one or more third waveguides being an odd-numbered row of waveguides;
- and
- a fourth row of one or more fourth waveguides arranged in the second orientation such that the third row of one or more third waveguides opposes the fourth row of one or more fourth waveguides, and such that the third row of one or more third waveguides is spaced apart from the fourth row of one or more fourth waveguides by a second row spacing, the fourth row of one or more fourth waveguides being an even-numbered row of waveguides;
- wherein the first group of waveguides and second group of waveguides are spaced such that a gap between the first group of waveguides and second group of waveguides is greater than the first row spacing, and the gap between the first group of waveguides and second group of waveguides is greater than the second row spacing;
- a source arranged to coat the plurality of waveguides with a coating material;
- and
- a shadow mask positioned between the source and the sample carrier, the shadow mask comprising a stacked array of hexagonal apertures comprising a series of alternating first sections having decreasing aperture width and second sections having increasing aperture width, wherein the first sections are aligned with odd-numbered rows of waveguides and the second sections are aligned with even-numbered rows of waveguide.
11 more elements
A coating device comprising:
- a sample carrier;
- a plurality of sample positions arranged on the sample carrier in a first group of sample positions and a second group of sample positions,
- wherein the first group of sample positions comprises:
- a first row of one or more first sample positions arranged in a first orientation, the first row of one or more first sample positions being an odd-numbered row of sample positions;
- and
- a second row of one or more second sample positions arranged in a second orientation, wherein the second orientation is opposite the first orientation, such that the first row of one or more first sample positions opposes the second row of one or more second sample positions, and such that the first row of one or more first sample positions is spaced apart from the second group of one or more second sample positions by a first row spacing, the second row of one or more second sample positions being an even-numbered row of sample positions;
- wherein the second group of sample positions comprises:
- a third row of one or more third sample positions arranged in the first orientation, the third row of one or more third sample positions being an odd-numbered row of sample positions;
- and
- a fourth row of one or more fourth sample positions arranged in the second orientation such that the third row of one or more third sample positions opposes the fourth row of one or more fourth sample positions, and such that the third row of one or more third sample positions is spaced apart from the fourth row of one or more fourth sample positions by a second row spacing, the fourth row of one or more fourth sample positions being an even-numbered row of sample positions;
- wherein the first group of sample positions and second group of sample positions are spaced such that a gap between the first group of sample positions and second group of sample positions is greater than the first row spacing, and the gap between the first group of sample positions and second group of sample positions is greater than the second row spacing;
- a shadow mask comprising a stacked array of hexagonal apertures comprising a series of alternating first sections having decreasing aperture width and second sections having increasing aperture width, wherein the first sections are aligned with odd-numbered rows of sample positions and the second sections are aligned with even-numbered rows of sample positions.
9 more elements
Dependencies are inferred from the claim text.