Eye imaging in head worn computing
Head-worn computers with eye-imaging systems include a camera system positioned in a head-worn computer, wherein the camera system is further positioned to capture eye-image light that originates as reflections from a user's eye, wherein the camera system is further positioned to capture eye-image light as a reflection from a partially reflective surface that is positioned in front of an image display in the head-worn computer, wherein image light, from the image display, is transmitted through the partially reflective surface. A processor is adapted to cause the camera system to capture the eye-image light. The processor is further adapted to cause a comparison of the captured eye-image light with a pre-stored eye image of a known user of the head-worn computer. In the event the comparison confirms the identity of the known user, the user is granted permission to view content to be presented in a display of the head-worn computer.
1. A system comprising:
a wearable head device comprising:
a camera;
a display;
a source of image light; and
a partially reflective surface positioned to receive image light from the source of image light; and
one or more processors configured to perform a method comprising:
causing image light to be transmitted, via the source of image light and further via the partially reflective surface, toward an eye of a first user of the wearable head device;
detecting, via the camera, eye-image light comprising a reflection of at least a portion of light that has been transmitted toward the eye of the first user;
comparing the detected eye-image light with eye image data corresponding to an authorized user;
determining, based on the comparison, that the first user corresponds to the authorized user; and
in response to determining that the first user corresponds to the authorized user, presenting, via the display, a first content to the first user.
2. The system of claim 1 , wherein:
presenting the first content to the first user comprises presenting the first content via a first optical path; and
the reflection of at least a portion of light that has been transmitted toward the eye of the first user comprises a reflection of the light toward the camera along a second optical path collinear with the first optical path.
3. The system of claim 1 , wherein:
presenting the first content to the first user comprises presenting the first content via a first optical path; and
the reflection of at least a portion of light that has been transmitted toward the eye of the first user comprises a reflection of the light toward the camera along a second optical path collinear with the first optical path.
4. The system of claim 1 , wherein the method further comprises:
determining that the wearable head device has been removed from the first user; and
in response to the determination, forgoing presenting the first content.
5. The system of claim 1 , wherein causing light to be transmitted comprises causing light outside of the visible spectrum to be transmitted.
6. The system of claim 1 , wherein:
the method further comprises: in response to determining that the first user corresponds to the authorized user, determining a health characteristic of the first user, and
the first content is based on the health characteristic.
7. The system of claim 6 , wherein the health characteristic comprises one or more of a heart rate, a blink rate, a blood glucose level, a hemoglobin level, and a presence of a first substance in the first user's blood.
8. A method comprising:
transmitting image light from a source of image light toward a partially reflective surface of a wearable head device;
receiving, at the partially reflective surface, at least a portion of the image light;
transmitting, via the partially reflective surface, the portion of image light toward an eye of a first user of the wearable head device;
detecting, via a camera, eye-image light comprising a reflection of at least a portion of light that has been transmitted toward the eye of the first user;
comparing the detected eye-image light with eye image data corresponding to an authorized user;
determining, based on the comparison, that the first user corresponds to the authorized user; and
in response to determining that the first user corresponds to the authorized user, presenting, via a display of the wearable head device, a first content to the first user.
9. The method of claim 8 , wherein:
presenting the first content to the first user comprises presenting the first content via a first optical path; and
the reflection of at least a portion of light that has been transmitted toward the eye of the first user comprises a reflection of the light toward the camera along a second optical path collinear with the first optical path.
10. The method of claim 8 , wherein:
presenting the first content to the first user comprises presenting the first content via a first optical path; and
the reflection of at least a portion of light that has been transmitted toward the eye of the first user comprises a reflection of the light toward the camera along a second optical path collinear with the first optical path.
11. The method of claim 8 , further comprising:
determining that the wearable head device has been removed from the first user; and
in response to the determination, forgoing presenting the first content.
12. The method of claim 8 , wherein causing light to be transmitted comprises causing light outside of the visible spectrum to be transmitted.
13. The method of claim 8 , wherein:
the method further comprises: in response to determining that the first user corresponds to the authorized user, determining a health characteristic of the first user, and
the first content is based on the health characteristic.
14. The method of claim 13 , wherein the health characteristic comprises one or more of a heart rate, a blink rate, a blood glucose level, a hemoglobin level, and a presence of a first substance in the first user's blood.
15. A non-transitory computer-readable storage medium storing instructions which, when executed by one or more processors, cause the one or more processors to perform a method comprising:
transmitting image light from a source of image light toward a partially reflective surface of a wearable head device;
receiving, at the partially reflective surface, at least a portion of the image light;
transmitting, via the partially reflective surface, the portion of image light toward an eye of a first user of the wearable head device;
detecting, via a camera, eye-image light comprising a reflection of at least a portion of light that has been transmitted toward the eye of the first user;
comparing the detected eye-image light with eye image data corresponding to an authorized user;
determining, based on the comparison, that the first user corresponds to the authorized user; and
in response to determining that the first user corresponds to the authorized user, presenting, via a display of the wearable head device, a first content to the first user.
16. The non-transitory computer-readable storage medium of claim 15 , wherein:
presenting the first content to the first user comprises presenting the first content via a first optical path; and
the reflection of at least a portion of light that has been transmitted toward the eye of the first user comprises a reflection of the light toward the camera along a second optical path collinear with the first optical path.
17. The non-transitory computer-readable storage medium of claim 15 , wherein:
presenting the first content to the first user comprises presenting the first content via a first optical path; and
the reflection of at least a portion of light that has been transmitted toward the eye of the first user comprises a reflection of the light toward the camera along a second optical path collinear with the first optical path.
18. The non-transitory computer-readable storage medium of claim 15 , the method further comprising:
determining that the wearable head device has been removed from the first user; and
in response to the determination, forgoing presenting the first content.
19. The non-transitory computer-readable storage medium of claim 15 , wherein causing light to be transmitted comprises causing light outside of the visible spectrum to be transmitted.
20. The non-transitory computer-readable storage medium of claim 15 , wherein:
the method further comprises: in response to determining that the first user corresponds to the authorized user, determining a health characteristic of the first user,
the first content is based on the health characteristic, and
the health characteristic comprises one or more of a heart rate, a blink rate, a blood glucose level, a hemoglobin level, and a presence of a first substance in the first user's blood.