ENHANCED CLOSED LOOP, OPTICAL FEEDBACK SYNCHRONIZATION SYSTEM FOR IMAGING APPLICATIONS
First Claim
Patent Images
1. A closed loop, optical feedback synchronization system comprising:
- a light source that emits light;
a lens assembly coupled to the barrel;
a single mode fiber for directing the emitted light toward the lens, the single mode fiber having a cantilevered portion extending into the barrel;
a MEMS-based driving mechanism for vibrationally deflecting the cantilevered portion of the single mode fiber in accordance with a frequency mode;
a multi-mode fiber for receiving light reflected from the lens;
a housing;
a plurality of conductors extending through the housing; and
a synchronizer assembly having a synchronizer body and a synchronizer integrated circuit received in a recess formed in the body, and wherein the synchronizer integrated circuit includes a slot configured to direct the reflected light from the lens assembly to the multi-mode fiber.
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Abstract
A closed loop, optical feedback synchronization system provides real time feedback and control of a light emitting fiber when scanning or displaying an image. The light emitting fiber is driven by a MEMS-based actuator in an angular pattern to scan the image. Light reflected from a lens assembly is received by an optical synchronizer integrated circuit that includes a slot located between walls of the circuit. The reflected light is directed toward a multi-mode fiber in optical communication with the circuit. A radial position of the reflected light as it passes the slot may be used to compensate for a drift in angular velocity of the light emitting fiber.
8 Citations
18 Claims
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1. A closed loop, optical feedback synchronization system comprising:
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a light source that emits light; a lens assembly coupled to the barrel; a single mode fiber for directing the emitted light toward the lens, the single mode fiber having a cantilevered portion extending into the barrel; a MEMS-based driving mechanism for vibrationally deflecting the cantilevered portion of the single mode fiber in accordance with a frequency mode; a multi-mode fiber for receiving light reflected from the lens; a housing; a plurality of conductors extending through the housing; and a synchronizer assembly having a synchronizer body and a synchronizer integrated circuit received in a recess formed in the body, and wherein the synchronizer integrated circuit includes a slot configured to direct the reflected light from the lens assembly to the multi-mode fiber. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An optical feedback synchronization assembly for stabilizing an imaging operation of an optical imaging device, the assembly comprising:
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a single mode fiber for directing light from a light source toward a lens assembly, the single mode fiber having a cantilevered portion; an actuator for vibrationally deflecting the cantilevered portion of the single mode fiber in accordance with a frequency mode; a multi-mode fiber for receiving light reflected from the lens; and a synchronizer assembly having a synchronizer housing and a synchronizer integrated circuit that is received in a recess formed in the housing, the synchronizer integrated circuit having a slot configured to direct the reflected light from the lens to the multi-mode fiber. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method for acquiring images using a closed loop, optical feedback synchronization system, the method comprising:
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emitting modulated light from a light source through a single-mode fiber, wherein the light is emitted toward a lens assembly of the optical feedback synchronization system; receiving at least a portion of light reflected from the lens assembly through a slot formed in a synchronizer integrated circuit, wherein in the slot is in optical communication with a multi-mode fiber; determining a radial line of the image based on a position of the reflected light as crosses the slot of the synchronizer integrated circuit; and compensating for a drift in angular velocity of the single-mode fiber by controlling an actuator driving the single-mode fiber. - View Dependent Claims (16, 17)
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18. A closed loop, optical feedback synchronization system comprising:
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a light source that emits modulated light carrying an image to be displayed on a surface; a lens assembly coupled to a barrel; a single mode fiber for directing the emitted light toward the lens, the single mode fiber having a cantilevered portion extending into the barrel; a driving mechanism for vibrationally deflecting the cantilevered portion of the single mode fiber in accordance with a frequency mode; a multi-mode fiber for receiving light reflected from the lens assembly; a housing; a plurality of conductors extending through the housing; and a synchronizer assembly having a synchronizer body and a synchronizer integrated circuit received in a recess formed in the body, and wherein the synchronizer integrated circuit includes a slot configured to direct the reflected light from the lens assembly to the multi-mode fiber.
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Specification