Abstract:
An illuming device for use in medically illuminating tissue of interest within a patient generally includes a light diffusing optical fiber and an at least partially optically opaque sheath that is mounted over the fiber for selective, sliding movement along the length thereof. By sliding the sheath relative to the optical fiber after it has been inserted into a patient to illuminate a particular area of tissue, the length, size, and/or shape of the light that is exposed to the tissue can be selectively controlled. Such in situ variation of the properties of the exposed light permit use of a single instrument and a single procedure regardless of variation in the size and shape of the diseased tissue being medically treated.
Abstract:
Embodiments of a light diffusing device with a color conversion layer are disclosed. Specifically the color conversion layer includes a luminophore that converts light from a higher wavelength to a lower wavelength.
Abstract:
Optical coupling systems are provided. An optical coupling system includes a first optical fiber end(122a) having a first core (124a), a second optical fiber end (122b) having a second core (124b), and a laser diode (110) optically coupled to the first core and the second core at an optical coupling location. The laser diode emits a light beam having an asymmetrical cross-sectional light beam profile comprising a fast axis diameter and a slow axis diameter. The fast axis diameter is longer than the slow axis diameter. Further, the first optical fiber end and the second optical fiber end are adjacently positioned along the fast axis diameter of the asymmetrical cross-sectional light beam profile of the laser diode at the optical coupling location such that the first core and the second core are within the asymmetrical cross-sectional light beam profile at the optical coupling location.
Abstract:
Hyperspectral detector systems and methods for spectrally analyzing a scene are disclosed. The methods include capturing a context image and a single-column spectral image that falls within the context image. The spectral image is panned over the scene and within the context image to capture spectral signatures within the scene. The spectral signatures are compared to reference spectral signatures, and the locations of the one or more spectral signatures are marked. The systems and methods obviate the need to store and process large amounts of spectral data and allow for real-time display of the fused context image and spectral image, along with the marked locations of matched spectral signatures.
Abstract:
Fiber lighting systems and methods of switching light are disclosed. A system includes a light source and a switching device having an input that receives light from the light source, at least one output, and a microelectromechanical mirror disposed in an optical pathway between the input and the output. The mirror is repositionable to direct light from the input into the output. The system also includes a light diffusing fiber coupled to the output that emits light along its length and an electronic control unit that directs the light source to pulse the light at a frequency of 10 Hz - 500 kHz and orient the mirror for directing the light to an output. The repositioning is synchronized with the pulsing such that the mirror is at a coupled orientation during a pulse and is repositioned between pulses.
Abstract:
Optical coupling systems are provided. An optical coupling system includes a first optical fiber end having a first core, a second optical fiber end having a second core, and a laser diode optically coupled to the first core and the second core at an optical coupling location. The laser diode emits a light beam having an asymmetrical cross-sectional light beam profile comprising a fast axis diameter and a slow axis diameter. The fast axis diameter is longer than the slow axis diameter. Further, the first optical fiber end and the second optical fiber end are adjacently positioned along the fast axis diameter of the asymmetrical cross-sectional light beam profile of the laser diode at the optical coupling location such that the first core and the second core are within the asymmetrical cross-sectional light beam profile at the optical coupling location.
Abstract:
Optical probe delivery and retrieval systems and methods are disclosed. The optical probe includes a dissolvable capsule that contains micro-components that are substantially smaller than the size of the capsule. The capsule is allowed to dissolve in the stomach after imaging data is collected in the esophagus. Thus, only the optical fiber tether and the relatively small micro-components attached thereto need be retrieved. Delivery devices that facilitate comfortable delivery and retrieval of the optical probe are also disclosed.
Abstract:
Optical connectors for connecting optical fiber to a light source are disclosed. In one embodiment, an optical connector includes a housing with a first end having an open aperture and a second end having a blind aperture. A chamber is disposed in the housing such that the optical axis of the housing passes through the chamber. The chamber includes a first material. A light collecting region formed from a second material is disposed in the housing between the second end of the housing and the chamber. A blind aperture is positioned in the light collecting region such that a termination of the blind aperture is spaced apart from the chamber by at least a portion of the second material. A refracting surface is disposed in the housing between the open aperture and the light collecting region such that the optical axis of the housing passes through the refracting surface.