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;
one or more sensors; 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:
determining an operation mode based on a signal received by the one or more sensors;
causing the source of image light to present image light, via the source of image light and further via the partially reflective surface, toward an eye of a user of the wearable head device;
in accordance with a determination that the operation mode comprises a first operation mode, capturing, via the camera at a first rate, eye-image light comprising a reflection of the presented light;
in accordance with a determination that the operation mode comprises a second operation mode, capturing, via the camera at a second rate different from the first rate, eye-image light comprising a reflection of the presented light; and
monitoring a health of the user based on the eye-image light.
2. The system of claim 1 , wherein monitoring the health of the user comprises detecting a health event.
3. The system of claim 2 , wherein the health event comprises one or more of a concussion, a brain injury, a stroke, and blood loss.
4. The system of claim 1 , wherein:
said presenting the image light toward the eye of the user comprises presenting the image light via a first optical path; and
the reflection of the presented light comprises a reflection of the light toward the camera along a second optical path at least partially collinear with the first optical path.
5. The system of claim 1 , wherein:
said presenting the image light toward the eye of the user comprises presenting the image light via a first optical path; and
the reflection of the presented light comprises a reflection of the light toward the camera along a second optical path not collinear with the first optical path.
6. The system of claim 1 , wherein the method further comprises:
determining that the wearable head device has been removed from the user; and
in response to the determination, forgoing causing the source of image light to present the image light.
7. The system of claim 1 , wherein said presenting the image light comprises presenting light outside of the visible spectrum.
8. The system of claim 1 , wherein determining the operation mode is further based on a health characteristic of the user, 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 user's blood.
9. A method comprising:
determining an operation mode based on a signal received by one or more sensors of the wearable head device, the wearable head device comprising a camera, a display, and a source of image light;
receiving image light, via the source of image light, at a partially reflective surface of the wearable head device;
presenting, via the partially reflective surface, the image light to an eye of a user of the wearable head device;
in accordance with a determination that the operation mode comprises a first operation mode, capturing, via the camera at a first rate, eye-image light comprising a reflection of the presented light;
in accordance with a determination that the operation mode corresponds to a second operation mode, capturing, via the camera at a second rate different from the first rate, eye-image light comprising a reflection of the presented light; and
monitoring a health of the user based on the eye-image light.
10. The method of claim 9 , wherein monitoring the health of the user comprises detecting a health event.
11. The method of claim 10 , wherein the health event comprises one or more of a concussion, a brain injury, a stroke, and blood loss.
12. The method of claim 9 , wherein:
said presenting the image light toward the eye of the user comprises presenting the image light via a first optical path; and
the reflection of the presented light comprises a reflection of the light toward the camera along a second optical path at least partially collinear with the first optical path.
13. The method of claim 9 , wherein:
said presenting the image light toward the eye of the user comprises presenting the image light via a first optical path; and
the reflection of the presented light comprises a reflection of the light toward the camera along a second optical path not collinear with the first optical path.
14. The method of claim 9 , further comprising:
determining that the wearable head device has been removed from the user; and
in response to the determination, forgoing receiving the image light at the partially reflective surface.
15. The method of claim 9 , wherein said presenting image light comprises presenting light outside of the visible spectrum.
16. The method of claim 9 , wherein determining the operation mode is further based on a health characteristic of the user, 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 user's blood.
17. 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:
determining an operation mode based on a signal received by one or more sensors of the wearable head device, the wearable head device comprising a camera, a display, and a source of image light;
receiving image light, via the source of image light, at a partially reflective surface of the wearable head device;
presenting, via the partially reflective surface, the image light to an eye of a user of the wearable head device;
in accordance with a determination that the operation mode comprises a first operation mode, capturing, via the camera at a first rate, eye-image light comprising a reflection of the presented light;
in accordance with a determination that the operation mode corresponds to a second operation mode, capturing, via the camera at a second rate different from the first rate, eye-image light comprising a reflection of the presented light; and
monitoring a health of the user based on the eye-image light.
18. The non-transitory computer-readable storage medium of claim 17 , wherein monitoring the health of the user comprises detecting a health event.
19. The non-transitory computer-readable storage medium of claim 18 , wherein the health event comprises one or more of a concussion, a brain injury, a stroke, and blood loss.
20. The non-transitory computer-readable storage medium of claim 17 , wherein determining the operation mode is further based on a health characteristic of the user, 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 user's blood.