Logarithmic light intensifier for use with photoreceptor-based implanted retinal prosthetics and those prosthetics
First Claim
1. A light amplifier for use in a photoreceptor based implanted retinal prosthetic comprising:
- a light receiver collecting a received visual image;
a first transducer, coupled to said light receiver, converting said received visual image into a electrical signal;
an amplifier coupled to said first transducer, amplifying said electrical signal;
a second transducer converting said electrical signal to a amplified visual image; and
a light transmitter, coupled to said second transducer, and transmitting said amplified visual image.
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Accused Products
Abstract
Directly modulating a beam of photons onto the retinas of patients who have extreme vision impairment or blindness. Supplying enough imaging energy to retinal prosthetics implanted in the eye which operate by having light (external to the eye) activating photoreceptors, or photoelectrical material. Providing sufficient light amplification and does it logarithmically. Having sufficient output light power, the output light level still remains at a safe level. Providing balanced biphasic stimulation with no net charge injection into the eye. Both optical and electronic magnification for the image is incorporated. It would not be feasible to zoom in on items of particular interest or necessity. Improper threshold amplitudes would obtain uncomfortable maximum thresholds. Proper adjustment for the threshold amplitudes and maximum comfortable thresholds is provided. The extent that the individual stimulation sites in the retina give different color perceptions, upon stimulation, colors of the viewed scene is correlated with specific stimulation sites providing a certain amount of color vision.
29 Citations
6 Claims
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1. A light amplifier for use in a photoreceptor based implanted retinal prosthetic comprising:
- a light receiver collecting a received visual image;
a first transducer, coupled to said light receiver, converting said received visual image into a electrical signal;
an amplifier coupled to said first transducer, amplifying said electrical signal;
a second transducer converting said electrical signal to a amplified visual image; and
a light transmitter, coupled to said second transducer, and transmitting said amplified visual image. - View Dependent Claims (2, 3, 4, 5, 6)
- a light receiver collecting a received visual image;
Specification
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- Resources
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Current AssigneeSecond Sight Medical Products, Inc.
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Original AssigneeSecond Sight Medical Products, Inc.
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InventorsGreenberg, Robert J., Schulman, Joseph H., Seidman, Abraham N.
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Primary Examiner(s)Layno; Carl H.
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Assistant Examiner(s)MORALES, JON ERIC C
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Application NumberUS11/522,001Publication NumberTime in Patent Office985 DaysField of Search607/116, 607/148US Class Current607/53CPC Class CodesA61F 9/08 Devices or methods enabling...A61N 1/36046 of the eye
