Optical systems employing compliant electroactive materials
View Patent ↗The present invention provides optical systems, devices and methods which utilize one or more electroactive films to adjust an optical parameter of the optical device/system.
1. An optical device comprising:
a two ply transparent/translucent membrane where a perimeter of each ply of the transparent/translucent is sealed to define a chamber containing an optical fluid therein;
at least one electroactive film comprising a dielectric layer and two electrode layers, wherein at least a portion of the dielectric layer is sandwiched between the electrodes, the electroactive film located at the perimeter of the transparent/translucent membrane; and
wherein activation of the at least one electroactive film affects a dimension of the transparent membrane.
2. The optical device of claim 1 , wherein the dielectric layer defines the transparent/translucent membrane.
3. The optical device of claim 1 , wherein the dimension is a diameter or a thickness.
4. The optical device of claim 1 , wherein the affected dimension is the thickness of the chamber.
5. The optical device of claim 4 , wherein the chamber has a variable diameter and a fixed volume.
6. The optical device of claim 4 , wherein the chamber has a fixed diameter and a variable volume.
7. An optical system comprising:
at least one fluidic lens; and
at least one electroactive film associated with the at least one fluid lens, wherein activation of the at least one electroactive film affects a focal length of the fluidic lens wherein a diameter dimension of the fluidic lens is unaffected by activation of the at least one electroactive film.
8. The optical system of claim 7 wherein the at least one fluidic lens contains a fixed volume of fluid.
9. The optical system of claim 7 , wherein the at least one fluidic lens contains a variable volume of fluid.
10. The optical system of claim 9 , further comprising hydraulic means to vary the volume of optical fluid with the chamber
11. The optical system of claim 10 , wherein the hydraulic means comprises an electroactive film.
12. The optical system of claim 7 wherein activation of the at least one electroactive film affects a diameter dimension of the fluidic lens.
13. The optical system of claim 7 wherein the optical parameter is magnification.
14. The optical system of claim 13 , wherein a linear position of the at least one fluidic lens remains constant upon activation of the at least one electroactive film.
15. The optical system of claim 7 , wherein activation of the at least one electroactive film affects a dimension of the at least one fluidic lens.
16. An optical system comprising:
a focusing lens element; and
an afocal lens element positioned relative to the focusing lens;
wherein at least one of the lens elements comprises at least one fluidic lens and at least one electroactive film associated with the at least one fluidic lens for adjusting an optical parameter of the system wherein the position of the afocal lens element relative to the focusing lens element remains constant upon activation of the at least one electroactive film.
17. The optical system of claim 16 , wherein the afocal lens element comprises an assembly of lenses wherein one of such lenses is a fluidic lens and activation of the at least one electroactive film adjusts the magnification of the afocal lens element.
18. An optical system comprising:
a focusing lens element: and
an afocal lens element positioned relative to the focusing lens;
wherein at least one of the lens elements comprises at least one fluidic lens and at least one electroactive film associated with the at least one fluidic lens for adjusting an optical parameter of the system wherein the afocal lens element further comprises at least two other lens elements wherein the at least one fluid lens is positioned in between the two other lens elements.
19. An optical device comprising:
at least one electroactive film comprising at least one opaque region and at least one transparent/translucent region, wherein activation of the at least one electroactive film changes a surface area of the transparent/translucent region relative to a surface area of the opaque region, wherein such change modulates the amount of light passing through the at least one transparent/translucent region.
20. The optical device of claim 19 , wherein the at least one opaque region of the film comprises at least one electrode layer.
21. The optical device of claim 19 , wherein the at least one transparent/translucent region of the film comprises a dielectric material.
22. The optical device of claim 19 , wherein the intersection between the at least one opaque region and the at least one transparent/translucent region defines a straight line when the at least one electroactive film is inactive.
23. The optical device of claim 19 , wherein the intersection between the at least one opaque region and the at least one transparent/translucent region defines a curved line when the at least one electroactive film is inactive.