Folded optical design for eye-mounted cameras
First Claim
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1. An eye-mounted device comprising:
- 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;
an image sensor; and
optics that image the external environment onto the image sensor, where an optical path from the front aperture to the image sensor is a folded optical path.
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Abstract
An eye-mounted device includes a contact lens and an embedded camera, which for convenience will be referred to as a femtocamera. The front aperture of the femtocamera faces away from the user'"'"'s eye so that the image sensor in the femtocamera detects imagery of a user'"'"'s external environment. The femtocamera optics has a folded optical path, which is advantageous for fitting the femtocamera into the limited space within the contact lens. In one design, the optics for the femtocamera is based on a two mirror design, with a concave mirror followed by a convex mirror. In an alternate design, the optics for the camera includes an imaging lens near the front aperture.
34 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, the femtocamera comprising; a front aperture facing away from a user'"'"'s eye and towards an external environment; an image sensor; and optics that image the external environment onto the image sensor, where an optical path from the front aperture to the image sensor is a folded optical path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification