Systems and methods for manipulating light from ambient light sources
An optical device includes variable optical material that alters at least one of: incident ambient light, spectral content of incident ambient light or direction of incident ambient light through the optical device in response to a stimulus provided by the device. The device can sense intensity and/or spectral characteristics of ambient light and provide appropriate stimulus to various portions of the optical device to activate the variable optical material and alter at least one of: incident ambient light, spectral content of incident ambient light or direction of incident ambient light.
1. A user-wearable display device comprising:
a frame configured to mount on a user;
an augmented reality display attached to the frame and configured to direct images to an eye of the user;
a variable optical material that undergoes a physical and/or a chemical change in response to a stimulus;
a source configured to provide the stimulus; and
processing electronics configured to:
store one or more locations of ambient light sources in the environment;
determine the user's position within an environment surrounding the user; and
trigger the source to provide the stimulus to the variable optical material to effect a physical and/or a chemical change in the material based on the user's position in the environment such that at least one of an intensity of ambient light, a spectral content of ambient light, or a direction of ambient light is changed, wherein the stimulus is provided based on the user's position relative to the one or more stored locations of ambient light sources.
2. The user-wearable device of claim 1 , wherein the device is further configured to vary the stimulus based on the time of day.
3. The user-wearable device of claim 1 , wherein the augmented reality display comprises a waveguide configured to:
allow a view of the environment surrounding the user through the waveguide; and
form images by directing light out of the waveguide and into an eye of the user.
4. The user-wearable display device of claim 1 , further comprising a sensor configured to obtain information about ambient light conditions in the environment surrounding the user, wherein the processor is further configured to trigger the source to provide the stimulus to the variable optical material based on information obtained by the sensor.
5. The user-wearable device of claim 4 , wherein the sensor comprises at least one of a light sensor, a global positioning sub-system, or an environmental sensor.
6. The user-wearable device of claim 1 , wherein the source comprises an optical source, an electrical source, a thermal source, or a sonic/ultrasonic source.
7. The user-wearable device of claim 1 , wherein the variable optical material is embedded in a surface of the display or is disposed over a surface of the display.
8. The user-wearable device of claim 1 , wherein the variable optical material comprises one or more of: organic or inorganic compounds, electroactive proteins, molecules that exhibit a change is size or shape in response to the stimulus, molecules that move, rotate, twist or shift in response to the stimulus, molecules that move together and/or adhere together in response to the stimulus, molecules that move away from each other in response to the stimulus, or molecules that form nanostructures in response to the stimulus.
9. The user-wearable device of claim 1 , wherein the display comprises a first ocular region corresponding to a first eye of the user and a second ocular region corresponding to a second eye of the user, and
wherein the processing electronics are configured to trigger the source to provide the stimulus to a portion of the display to effect a physical and/or a chemical change in the material such that at least one of intensity of ambient light, spectral content of ambient light or direction of ambient light through the first ocular region is changed differently as compared to intensity of ambient light, spectral content of ambient light or direction of ambient light through the second ocular region.
10. The user-wearable device of claim 1 , wherein the processing electronics are configured to trigger the source to provide the stimulus to the display to effect a physical and/or a chemical change in the material such that attenuation of intensity of ambient light transmitted through a first portion of the display is greater than attenuation of intensity of ambient light transmitted through a second portion of the display.
11. The user-wearable device of claim 1 , further comprising a head pose sensor, wherein the processing electronics are further configured to trigger the source to provide the stimulus to the variable optical material based on movement or position of the user's head as determined by the head pose sensor.
12. The user-wearable device of claim 1 , wherein the processing electronics are further configured to adjust a location of the display to which the stimulus is applied based on feedback from the user.
13. The user-wearable device of claim 1 , wherein the processing electronics are further configured to adjust a size of a region of the display to which the stimulus is applied based on feedback from the user.
14. The user-wearable device of claim 1 , wherein the processing electronics are further configured to adjust an amount by which at least one of an intensity of ambient light, a spectral content of ambient light, or a direction of ambient light is changed based on feedback from the user.