摘要:
A device for the positioning of fiber optic output including a base having a hole disposed at a midpoint thereof, a collar having an opening at a midpoint, a plurality of bimorph actuators, each actuator connected to an outer side surface of the base and located at opposite ends, a plurality of flexible beams, each having a first end connected to the collar and a second end connected to a bimorph actuator, a flexible tube inserted in the hole, where a bottom end of the tube is cantilevered at a bottom of the base and a top end of the tube is inserted in the opening of the collar, and a fiber optic embedded in the flexible tube.
摘要:
A device for the positioning of fiber optic output including a base having a hole disposed at a midpoint thereof, a collar having an opening at a midpoint, a plurality of bimorph actuators, each actuator connected to an outer side surface of the base and located at opposite ends, a plurality of flexible beams, each having a first end connected to the collar and a second end connected to a bimorph actuator, a flexible tube inserted in the hole, where a bottom end of the tube is cantilevered at a bottom of the base and a top end of the tube is inserted in the opening of the collar, and a fiber optic embedded in the flexible tube.
摘要:
Apparatus for correcting a distorted incident wavefront are disclosed herein. In some embodiments, an apparatus may include a deformable mirror haying a first surface; a plurality of bimorph actuators coupled to an opposing second surface of the deformable mirror to tilt the deformable mirror with respect to a first plane; at least one mount to convert first motions of the plurality of bimorph actuators to tilt the deformable mirror with respect to the first plane; and an assembly disposed between the at least one mount and the second surface of the deformable mirror to decouple the first motions of the plurality of bimorph actuators from second motions in the deformable mirror that deform the first surface, wherein the plurality of bimorph actuators, the at least one mount, and the assembly have a combined footprint that is smaller than a surface area of the first surface of the deformable mirror.
摘要:
A method for mitigating image distortions induced by optical wave propagation through a random media (e.g., atmospheric turbulence or volume of water) from a stream of video data provided by a single shortexposure image sensor is described. The method is based on the two following sequential steps: (1) enhancement of the raw video stream and (2) fusion of the enhanced stream using the lucky region fusion (LRF) technique. The first step enhances features of the raw image stream the LRF method success is based on and especially mitigates the effect of low light level, aerosol pollution, dust, haze, and other deteriorating factors. The second step, fusion of the enhanced stream, is realized by sequentially merging image regions with highest quality within a temporal buffer into a single image before sliding the temporal window forward. The process is continuously repeated in order to generate a stream of fused images. The resulting fused stream hence has an image quality superior to that of any image within the buffer and demonstrates improved contrast as well as increased detail visualization. In addition, the disclosed invention offers a method for automated extraction of random media (atmospheric turbulence for example) characteristics needed for optimizing the LRF method performance. Based solely on analysis of the enhanced video stream, this has the advantage to eliminate the need for turbulence strength characterization devices (e.g., scintillometer) and it allows the invention to provide an optimal fused stream even when operating within an evolving environment.
摘要:
An adaptive free-space laser communication system and a method of communication between laser communication transceivers of the system. Communication channel condition information communicated via laser beams transmitted between a first laser communication transceiver and a second laser communication transceiver is monitored and the information is shared between the transceivers. A wave-front phase of the laser beams is shaped with wave-front correctors of the first and second laser communication transceivers.
摘要:
An ocular refractive alteration device is controlled to alter an ocular refractive lens according to an eye of a patient, including applying to the eye a measuring light beam formed of incoherent light to provide an applied incoherent measuring light beam and determining an image quality metric according to the applied incoherent light beam. The ocular refractive lens alteration device is controlled to alter the refractive lens according to the image quality metric. A method is set forth for locating a tumor in-an eye including applying to the eye a measuring light beam formed of incoherent light to provide an applied incoherent measuring light beam and determining a frequency distribution is also set forth the applied incoherent measuring light beam. The tumor is locating according to the frequency distribution.
摘要:
A method for mitigating image distortions induced by optical wave propagation through a random media (e.g., atmospheric turbulence or volume of water) from a stream of video data provided by a single shortexposure image sensor is described. The method is based on the two following sequential steps: (1) enhancement of the raw video stream and (2) fusion of the enhanced stream using the lucky region fusion (LRF) technique. The first step enhances features of the raw image stream the LRF method success is based on and especially mitigates the effect of low light level, aerosol pollution, dust, haze, and other deteriorating factors. The second step, fusion of the enhanced stream, is realized by sequentially merging image regions with highest quality within a temporal buffer into a single image before sliding the temporal window forward. The process is continuously repeated in order to generate a stream of fused images. The resulting fused stream hence has an image quality superior to that of any image within the buffer and demonstrates improved contrast as well as increased detail visualization. In addition, the disclosed invention offers a method for automated extraction of random media (atmospheric turbulence for example) characteristics needed for optimizing the LRF method performance. Based solely on analysis of the enhanced video stream, this has the advantage to eliminate the need for turbulence strength characterization devices (e.g., scintillometer) and it allows the invention to provide an optimal fused stream even when operating within an evolving environment.
摘要:
The invention includes a method for clarifying an optical/digital image of an object to perform a procedure on an object having the steps of applying to the object a light beam formed of incoherent light and reflecting the applied incoherent light beam from the object to provide a reflected light beam and providing electrical signals representative of the reflected light beam. An image quality metric is determined in accordance with the electrical signals and an image is determined in accordance with the image quality metric. The procedure is performed in accordance with the image quality metric.
摘要:
A method optimizes electromagnetic energy in a system for processing an image of an object in order to perform a procedure on an object. A plurality of light beams formed of incoherent light is applied to an object at a plurality of differing frequencies and reflected from the object to provide a plurality of reflected light beams. A corresponding plurality of electrical signals is provided accordingly and a corresponding plurality of image quality metrics is determined. A corresponding plurality of images is determined in accordance with the plurality of image quality metrics and an image is selected according to a predetermined image criterion to provide a selected image. A frequency is determined according to the selected image and the procedure is performed on an object according to the determined frequency.
摘要:
Systems for optical wavefront sensing and control based on a phase contrast Fourier domain filtering technique. Optically or electronically controlled phase spatial light modulators (SLM) are used as the Fourier domain filter. A direct adaptive-optic feedback system using the optical wavefront sensing systems. A differential Zernike filter is also disclosed.