Abstract:
Apparatuses and methods for scanned beam endoscopes, endoscope tips, and scanned beam imagers are disclosed. In one aspect, a scanned beam endoscope includes at least one light detection element that collects light reflected from a FOV through one or more openings in the scanner of the endoscope. In another aspect, the illumination optical fiber may be positioned so that its output end is laterally positioned in relation to the scanner. In yet another aspect, the scanner is oriented to provide a non-axial FOV.
Abstract:
A portable video projector includes facility to direct a projected image field along an axis in an alignment corresponding to the state of an optical element.
Abstract:
Embodiments including methods and apparatuses for displaying an image including generating a first modulated and scanned excitation beam; generating a second modulated and scanned excitation beam; impinging the first and second modulated and scanned excitation beams onto a photoluminescent screen; and responsively converting the wavelengths of the first and second excitation beams into different corresponding third and fourth visible wavelength photoluminescent emissions, wherein the first modulated and scanned excitation beam is substantially prevented from stimulating photoluminescent emissions at the fourth visible wavelength and the second modulated and scanned excitation beam is substantially prevented from stimulating photoluminescent emissions at the third visible wavelength.
Abstract:
A photoluminescent light source includes an excitation light source operable to emit light at a primary wavelength and a photoluminescent material optically coupled to the excitation light source. The photoluminescent material has a characteristic to emit light at a secondary wavelength in response to absorbing light at the primary wavelength. Scanned beam systems employing photoluminescent light sources and methods of using the photoluminescent light sources are also disclosed.
Abstract:
An endoscope system and method includes an endoscope tip coupled to a endoscope console for providing images of anatomical features imaged using the endoscope system. The system also includes a calibration device having known optical properties. The calibration device is imaged using the endoscope system, and data corresponding to the image is obtained. This data are compared to data corresponding to the known optical properties of the calibration device. Based on this comparison, calibration data corresponding to imaging errors of the endoscope system are obtained. The calibration data are used to calibrate the endoscope system.
Abstract:
A scanning endoscope, amenable to both rigid and flexible forms, scans a beam of light across a field-of-view, collects light scattered from the scanned beam, detects the scattered light, and produces an image. The endoscope may comprise one or more bodies housing a controller, light sources, and detectors; and a separable tip housing the scanning mechanism. The light sources may include laser emitters that combine their outputs into a polychromatic beam. Light may be emitted in ultraviolet or infrared wavelengths to produce a hyperspectral image. The detectors may be housed distally or at a proximal location with gathered light being transmitted thereto via optical fibers. A plurality of scanning elements may be combined to produce a stereoscopic image or other imaging modalities. The endoscope may include a lubricant delivery system to ease passage through body cavities and reduce trauma to the patient. The imaging components are especially compact, being comprised in some embodiments of a MEMS scanner and optical fibers, lending themselves to interstitial placement between other tip features such as working channels, irrigation ports, etc.
Abstract:
A MEMS scanning device includes more than one type of actuation. In one approach capacitive and magnetic drives combine to move a portion of the device along a common path. In one such structure, the capacitive drive comes from interleaved combs. In another approach, a comb drive combines with a pair of planar electrodes to produce rotation of a central body relative to a substrate. In an optical scanning application, the central body is a mirror. In a biaxial structure, a gimbal ring carries the central body. The gimbal ring may be driven by more than one type of actuation to produce motion about an axis orthogonal to that of the central body. In another aspect, a MEMS scanning device is constructed with a reduced footprint.
Abstract:
A portable end device, such as a bar code scanner, may be equipped with auxiliary interfaces. The auxiliary interfaces may be easily added to the end device as a replaceable cover, such as a replaceable battery door. A signal path conducts signals to and from the replaceable cover. One auxiliary interface is a Bluetooth radio. Data integrity protocols may be selected to guarantee delivery and guarantee no duplicate deliveries. Host pairing algorithms may provide standard or strong pairing with a host computer. Ergonomic interface features allow a user to control and monitor the operation of the end device and the data link with minimal hardware cost and battery life impact. Host software programs provide data routing, automatic reestablishment of the data link, and other functions. The system is adaptable to a wide array of use environments through the selection of timer parameters in the end device.
Abstract:
A method includes obtaining a measurement of a property of a light source, scanning light from the light source onto a surface, such that the light interacts with the surface, detecting light from the surface to create a picture element, and correcting the picture element with the measurement of the property. An apparatus includes a scanned beam display, the scanned beam display is configured to receive a signal and to scan the signal for viewing by a user. The signal is to contain picture element information. The picture element information includes information for a plurality of colors, wherein information for at least one color is corrected to substantially remove a perturbation to the picture element information, such that an image containing the picture element information will be substantially unchanged by the perturbation.