Advanced optical designs for eye-mounted imaging systems
First Claim
Patent Images
1. An eye-mounted device comprising:
- a contact lens; and
a femtocamera mounted in the contact lens, where the femtocamera is not larger than 2 mm×
2 mm×
2 mm, the femtocamera comprising;
a front aperture facing away from a user'"'"'s eye and towards an external environment;
a concave primary mirror facing the front aperture;
a convex secondary mirror facing the concave primary mirror;
an image sensor, the primary mirror and secondary mirror cooperating to image the external environment onto the image sensor; and
a baffle system comprising;
a three-dimensional obscuration extending from the secondary mirror towards the primary mirror, where the obscuration blocks extraneous rays from the external environment from reaching the image sensor.
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Abstract
An eye-mounted device includes a contact lens and an embedded imaging system. The front aperture of the imaging system faces away from the user'"'"'s eye so that the image sensor in the imaging system detects imagery of a user'"'"'s external environment. The optics for the imaging system has a folded optical path, which is advantageous for fitting the imaging system into the limited space within the contact lens. In one design, the optics for the imaging system is based on a two mirror design, with a concave mirror followed by a convex mirror.
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Citations
20 Claims
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1. An eye-mounted device comprising:
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a contact lens; and a femtocamera mounted in the contact lens, where the femtocamera is not larger than 2 mm×
2 mm×
2 mm, the femtocamera comprising;a front aperture facing away from a user'"'"'s eye and towards an external environment; a concave primary mirror facing the front aperture; a convex secondary mirror facing the concave primary mirror; an image sensor, the primary mirror and secondary mirror cooperating to image the external environment onto the image sensor; and a baffle system comprising; a three-dimensional obscuration extending from the secondary mirror towards the primary mirror, where the obscuration blocks extraneous rays from the external environment from reaching the image sensor. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An eye-mounted device comprising:
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a contact lens; and a femtocamera mounted in the contact lens, the femtocamera comprising; a front aperture facing away from a user'"'"'s eye and towards an external environment, where the front aperture has a maximum lateral dimension of not more than 1 mm; a concave primary mirror facing the front aperture; a convex secondary mirror facing the concave primary mirror; an image sensor, the primary mirror and secondary mirror cooperating to image the external environment onto the image sensor; and a baffle system comprising; a three-dimensional obscuration extending from the secondary mirror towards the primary mirror, where the obscuration blocks extraneous rays from the external environment from reaching the image sensor.
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8. An eye-mounted device comprising:
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a contact lens; and a femtocamera mounted in the contact lens, the femtocamera comprising; a front aperture facing away from a user'"'"'s eye and towards an external environment; a concave primary mirror facing the front aperture; a convex secondary mirror facing the concave primary mirror; an image sensor, the primary mirror and secondary mirror cooperating to image the external environment onto the image sensor; and a baffle system comprising; a three-dimensional obscuration extending from the secondary mirror towards the primary mirror, where the obscuration blocks extraneous rays from the external environment from reaching the image sensor; where; the front aperture is positioned at an axial location that is between the concave primary mirror and the convex secondary mirror; the front aperture has an inner edge and an outer edge; the three-dimensional obscuration is positioned between the secondary mirror and the inner edge of the front aperture; and the obscuration blocks extraneous rays from propagating from between the secondary mirror and the inner edge directly to the image sensor. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification