Supporting pillars for encapsulating a flexible PCB within a soft hydrogel contact lens
A contact lens may include a body of contact lens material extending between a first surface and a second surface. An electromechanical component may be supported in the contact lens material between the first surface and the second surface. A support comprising a plurality of pillars may be formed of the contact lens material and may extend from at least one of the first surface and the second surface to the electromechanical component.
1. A contact lens comprising:
a body of contact lens material extending between a first surface and a second surface;
an electromechanical component supported in the contact lens material between the first surface and the second surface; and
a support formed of the contact lens material extending from at least one of the first surface or the second surface to the electromechanical component, wherein the support comprises a plurality of supports extending from one or more of the first surface or the second surface to the electromechanical component.
2. The contact lens of claim 1 , wherein the electromechanical component has a first shape and wherein the support is formed with a second shape that corresponds to the first shape.
3. The contact lens of claim 2 , wherein the second shape is the same as the first shape.
4. The contact lens of claim 1 , wherein the support extends from at least one of the first surface or the second surface with a height of at least 0.020 mm.
5. The contact lens of claim 1 , wherein the support extends from at least one of the first surface or the second surface with a height of between 0.020 mm and 0.3 mm.
6. The contact lens of claim 1 , wherein the plurality of supports has a width or diameter of at least 0.020 mm.
7. The contact lens of claim 1 , wherein the plurality of supports has a width or diameter of between 0.020 mm and 2 mm.
8. The contact lens of claim 1 , wherein a first distance extends between the first surface and the second surface and wherein the support extends from at least one of the first surface or the second surface with a height of between 30% and 70% of the first distance.
9. The contact lens of claim 1 , wherein a first distance extends between the first surface and the second surface and wherein the support extends from at least one of the first surface or the second surface with a height of less than 50% of the first distance.
10. The contact lens of claim 1 , wherein the support has a volume within a range from 0.005 uL to 0.5 uL.
11. The contact lens of claim 1 , wherein the support has a volume within a range from 0.01 uL to 0.1 uL.
12. The contact lens of claim 1 , wherein the electromechanical component includes one or more of a flexible PCB, a power source, a processor, and a light source.
13. The contact lens of claim 1 , wherein the electromechanical component includes a pre-formed flexible PCB having a hemispherical shape.
14. The contact lens of claim 1 , wherein the plurality of supports is arranged in two concentric rings about a clear central zone.
15. The contact lens of claim 1 , wherein the plurality of supports is arranged in a first density to support a first portion of the electromechanical components and in a second density to support a second portion of the electromechanical components.
16. The contact lens of claim 1 , wherein the plurality of supports is arranged with a distance of between 0.10 mm and 1.0 mm from each other.
17. The contact lens of claim 1 , wherein the plurality of supports has a width and are arranged with a distance of between 0.2 widths and 5 widths from each other.
18. The contact lens of claim 1 , wherein the contact lens material comprises a material with a swell within a range from 0% to 2%.
19. The contact lens of claim 1 , the support is dimensioned to position a flexible printed circuit board (PCB) with a gap between the flex PCB and a contact lens mold from which the one or more plurality of supports extends.