Device and method for supplying energy to an active ocular implant
A device and a method, by means of which energy can be supplied to a retinal implant ( 12 ) via infrared radiation, are provided. To this end, infrared light is coupled in from an infrared light source ( 14 ), for example into a spectacle lens ( 13 ), and coupled out toward an eye ( 10 ) by way of an output coupling device ( 17 ) in order to illuminate the retinal implant ( 12 ).
1. A device configured to illuminate at least a portion of the retina of an eye of a user of the device with divergent infrared light, for supplying energy to a retinal implant, the device comprising:
an infrared light source to output the infrared light,
a spectacle lens,
a steering device arranged in or on the spectacle lens,
wherein the infrared light source is arranged in such a way that the infrared light reaches the steering device,
wherein the steering device focuses the infrared light toward the eye of the user as one or more focused beams, and wherein one or more foci of the one or more beams lie near a pupil of the eye, where “near” denotes a region of +/−5 millimeters, such that the one or more beams are divergent at the retina.
2. The device as claimed in claim 1 , wherein the steering device comprises at least one of a transmission grating, a reflection grating, a wavelength-selective beam splitter, a volume hologram or a Fresnel element.
3. The device as claimed in claim 2 , wherein at least one of the transmission grating or the reflection grating comprises a holographic grating.
4. The device of claim 1 , wherein the one or more focused beams comprise multiple focused beams corresponding to multiple viewing directions of the eye, with the foci of each focused beam lying near the pupil of the eye, for the corresponding viewing direction of the eye.
5. A method of supplying energy to a retinal implant, the method comprising:
directing infrared light into a steering device arranged in or on a lens of spectacles worn by a user, the lens being positioned in front of an eye of the user that has the retinal implant; and
redirecting the infrared light from the steering device toward the eye of the user as one or more focused beams, and wherein one or more foci of the one or more beams lie near a pupil of the eye, where “near” denotes a region of +/−5 millimeters, such that the one or more beams are divergent at the retina, thus supplying the retinal implant with energy.