Fluidic light field camera
A fluidic light field camera is disclosed herein. The fluidic light field camera includes a fluidic objective lens; a fluid control system operatively coupled to the fluidic objective lens, the fluid control system to change the shape of the fluidic objective lens in accordance with the amount of fluid therein; a microlens array disposed behind the fluidic objective lens; a sensor array disposed behind the microlens array; and a data processing device operatively coupled to the fluid control system and the sensor array, the data processing device configured to vary the focal point of the fluidic light field camera by using the fluid control system to control the shape of the fluidic objective lens, thereby enabling all portions of an image being captured by the fluidic light field camera to be in focus during a single recording cycle of the fluidic light field camera.
1. A fluidic light field camera, comprising:
a fluidic objective lens, the fluidic objective lens having an outer housing and a flexible membrane supported within the outer housing, the flexible membrane at least partially defining a chamber that receives a fluid therein;
a fluid control system operatively coupled to the fluidic objective lens, the fluid control system configured to insert an amount of the fluid into the chamber of the fluidic objective lens, or remove an amount of the fluid from the chamber of the fluidic objective lens, in order to change the shape of the fluidic objective lens in accordance with the amount of fluid therein;
a microlens array disposed behind the fluidic objective lens, the microlens array including a plurality of microlenses, the plurality of microlenses configured to capture light rays entering the fluidic light field camera from varying distances away from the fluidic light field camera;
a sensor array disposed behind the microlens array, the sensor array including a plurality of pixels, the plurality of microlenses configured to divert the light rays to different ones of the pixels of the sensor array so as to provide directional information for the light rays entering the fluidic light field camera; and
a data processing device operatively coupled to the fluid control system and the sensor array, the data processing device configured to vary the focal point of the fluidic light field camera by using the fluid control system to control the shape of the fluidic objective lens, thereby enabling all portions of an image being captured by the fluidic light field camera to be in focus during a single recording cycle of the fluidic light field camera, and the data processing device further configured to vary the focal point of the fluidic light field camera in a time duration of less than one millisecond so that the fluidic light field camera is capable of creating a two-dimensional image, a three-dimensional image, and/or a video where all portions of the image or images being captured by the fluidic light field camera are in focus during the single recording cycle of the fluidic light field camera.
2. The fluidic light field camera according to claim 1 , wherein the fluid control system comprises a pump and one or more fluid distribution lines, at least one of the one or more fluid distribution lines fluidly coupling the pump to the fluidic objective lens so that the pump is capable of adjusting concavity and/or convexity of the fluidic objective lens.
3. The fluidic light field camera according to claim 1 , wherein the fluid control system comprises a servomotor or piezoelectric system for driving an actuator that is configured to adjust concavity and/or convexity of the fluidic objective lens.
4. The fluidic light field camera according to claim 1 , wherein the fluidic objective lens further comprises a magnetically actuated subsystem configured to selectively deform the flexible membrane so as to increase or decrease the convexity of the flexible membrane of the fluidic objective lens.
5. The fluidic light field camera according to claim 4 , wherein the magnetically actuated subsystem of the fluidic light field camera comprises an annular or rectangular ring-shaped plate disposed on a front surface of the flexible membrane and a corresponding annular or rectangular ring-shaped electromagnet disposed on a rear surface of the outer housing or flexible membrane, the annular or rectangular ring-shaped electromagnet configured to selectively displace the annular or rectangular ring-shaped plate disposed on the front surface of the flexible membrane when an electrical current is selectively applied to the electromagnet, whereby the selective displacement of the annular or rectangular ring-shaped plate by the electromagnet increases or decreases the convexity of the flexible membrane.
6. The fluidic light field camera according to claim 1 , wherein the microlens array and the sensor array are disposed in a concave configuration relative to the light rays entering the fluidic light field camera through the fluidic objective lens.
7. A fluidic light field camera, comprising:
a housing, the housing having a front portion and a rear portion;
a fluidic objective lens disposed in the front portion of the housing, the fluidic objective lens having a flexible membrane supported by the housing, the flexible membrane at least partially defining a chamber that receives a fluid therein;
a fluid control system operatively coupled to the fluidic objective lens, the fluid control system configured to insert an amount of the fluid into the chamber of the fluidic objective lens, or remove an amount of the fluid from the chamber of the fluidic objective lens, in order to change the shape of the fluidic objective lens in accordance with the amount of fluid therein;
a microlens array disposed in the rear portion of the housing behind the fluidic objective lens, the microlens array including a plurality of microlenses, the plurality of microlenses configured to capture light rays entering the fluidic light field camera from varying distances away from the fluidic light field camera;
a sensor array disposed in the rear portion of the housing behind the microlens array, the sensor array including a plurality of pixels, the plurality of microlenses configured to divert the light rays to different ones of the pixels of the sensor array so as to provide directional information for the light rays entering the fluidic light field camera; and
a data processing device operatively coupled to the fluid control system and the sensor array, the data processing device configured to vary the focal point of the fluidic light field camera by using the fluid control system to control the shape of the fluidic objective lens, thereby enabling all portions of an image being captured by the fluidic light field camera to be in focus during a single recording cycle of the fluidic light field camera;
wherein the microlens array and the sensor array are disposed in a concave configuration relative to the light rays entering the fluidic light field camera through the fluidic objective lens so as to capture more light from a peripheral portion of the fluidic objective lens.
8. The fluidic light field camera according to claim 7 , wherein the fluid control system comprises a pump and one or more fluid distribution lines, at least one of the one or more fluid distribution lines fluidly coupling the pump to the fluidic objective lens so that the pump is capable of adjusting concavity and/or convexity of the fluidic objective lens.
9. The fluidic light field camera according to claim 7 , wherein the fluid control system comprises a servomotor or piezoelectric system for driving an actuator that is configured to adjust concavity and/or convexity of the fluidic objective lens.
10. The fluidic light field camera according to claim 7 , wherein the fluidic objective lens further comprises a magnetically actuated subsystem configured to selectively deform the flexible membrane so as to increase or decrease the convexity of the flexible membrane of the fluidic objective lens.
11. The fluidic light field camera according to claim 10 , wherein the magnetically actuated subsystem of the fluidic light field camera comprises an annular or rectangular ring-shaped plate disposed on a front surface of the flexible membrane and a corresponding annular or rectangular ring-shaped electromagnet disposed on a rear surface of the outer housing or flexible membrane, the annular or rectangular ring-shaped electromagnet configured to selectively displace the annular or rectangular ring-shaped plate disposed on the front surface of the flexible membrane when an electrical current is selectively applied to the electromagnet, whereby the selective displacement of the annular or rectangular ring-shaped plate by the electromagnet increases or decreases the convexity of the flexible membrane.
12. The fluidic light field camera according to claim 7 , wherein the data processing device is configured to vary the focal point of the fluidic light field camera in a time duration of less than one millisecond so that the fluidic light field camera is capable of creating a two-dimensional image, a three-dimensional image, and/or a video where all portions of the image or images being captured by the fluidic light field camera are in focus during the single recording cycle of the fluidic light field camera.
13. A tunable light field camera, comprising:
a housing, the housing having a front portion and a rear portion;
a tunable objective lens disposed in the front portion of the housing;
a control system operatively coupled to the tunable objective lens, the control system configured to change the shape of the tunable objective lens;
a microlens array disposed in the rear portion of the housing behind the tunable objective lens, the microlens array including a plurality of microlenses, the plurality of microlenses configured to capture light rays entering the tunable light field camera from varying distances away from the tunable light field camera;
a sensor array disposed in the rear portion of the housing behind the microlens array, the sensor array including a plurality of pixels, the plurality of microlenses configured to divert the light rays to different ones of the pixels of the sensor array so as to provide directional information for the light rays entering the tunable light field camera; and
a data processing device operatively coupled to the control system and the sensor array, the data processing device configured to vary the focal point of the tunable light field camera by using the control system to control the shape of the tunable objective lens, thereby enabling all portions of an image being captured by the tunable light field camera to be in focus during a single recording cycle of the tunable light field camera;
wherein the microlens array and the sensor array are disposed in a concave configuration relative to the light rays entering the tunable light field camera through the tunable objective lens so as to capture more light from a peripheral portion of the tunable objective lens.