A method and apparatus for improving the optical properties of an LED using a retroreflector element. A light emitting apparatus includes a substrate, at least one light emitting device attached to the substrate and including an outer primary light emitting surface through which substantially all light is emitted, and a retroreflector assembly attached to the substrate. The retroreflector assembly includes a proximal surface adjacent to the substrate, a distal surface spaced away from the substrate, and a retroreflective portion arranged between proximal surface and the distal surface. A distance from the distal surface to the substrate is less than or equal to a distance from the outer primary light emitting surface to the substrate.

As saturation enhancement processing, first saturation enhancement processing or second saturation enhancement processing different from the first saturation enhancement processing is executed. A high saturation range Ry(rc)Ry(r2) after the second saturation enhancement processing is greater than a high saturation range Rx(rc)Rx(r2) after the first saturation enhancement processing. A value Ry(r) included in the high saturation range Ry(rc)Ry(r2) after the second saturation enhancement processing is smaller than a value Rx(r) included in the high saturation range Rx(rc)Rx(r2) after the first saturation enhancement processing.

An image acquisition unit acquires a medical image which is obtained by picking up an image of an observation target illuminated with illumination light including short-wavelength narrowband light, the observation target being magnified at a first magnification ratio or more and less than a second magnification ratio that is more than the first magnification ratio. A disease-related processing unit performs processing related to the disease on the basis of the medical image.

Improved fluoresced imaging (FI) endoscope devices and systems are provided to enhance use of endoscopes with FI and visible light capabilities. An endoscope device is provided for endoscopy imaging in a white light and a fluoresced light mode. A chromatic adjustment assembly, typically implemented with prisms, compensates for a chromatic focal difference between the white light image and the fluoresced light image caused by the dispersive properties of the optical materials or optical design employed in the construction of the optical channel. The assembly is placed optically between the most proximal rod lens of the endoscope and the focusing optics, typically at an internal telecentric image space, to improve the chromatic correction. The prism assembly directs incoming light with different spectral content along separate paths which compensate for chromatic aberration.

To improve the use properties of a visualization and/or illumination system (1), with which an object can be illuminated with non-visible illumination light (2) during a medical intervention, some of the illumination light (2) transported by the system (1) is branched off and guided to a converter (3), which picks up, in particular detects or absorbs, the illumination light (2) and subsequently converts it into an indication signal (4) that is perceivable by humans and outputs this indication signal (4). Using the indication signal (4), a user can thus quickly and easily check whether or not the illumination light (2) is currently being emitted by the system (1).

Driving an emitter to emit pulses of electromagnetic radiation according to a jitter specification in a laser mapping imaging system is described. A system includes an emitter for emitting pulses of electromagnetic radiation and an image sensor comprising a pixel array for sensing reflected electromagnetic radiation. The system includes a driver for driving emissions by the emitter according to a jitter specification. The system is such that at least a portion of the pulses of electromagnetic radiation emitted by the emitter comprises a laser mapping pattern.

An imaging system and method includes a rolling shutter sensor that captures a plurality of images of a scene, a time-varying illumination source that illuminates the scene, and a processor that receives the plurality of images from the rolling shutter sensor and separates the plurality of images into a plurality of feeds. Each of the plurality of images is captured as a series of lines. The rolling shutter sensor and the time-varying illumination source are operated synchronously to cause a plurality of on-cadence lines of the rolling shutter sensor to receive more illumination from the time-varying illumination source than a plurality of off-cadence lines of the rolling shutter sensor. Each of the plurality of feeds has a different contribution of the time-varying illumination source to an overall illumination of the scene.

An endoscope for imaging a fluorescent agent in a patient, the endoscope having a first optical channel communicating light from a first light source and a second light source, the first light source having an excitation wavelength and the second light source having a wavelength different than the wavelength of the first light source; a field stop having a fluorescent indicator; and a second optical channel in optical communication with the first light source and in optical communication with the fluorescent indicator on the field stop. When light from the first light source illuminates the fluorescent indicator on the field stop, the fluorescent indicator is detectable. Image processing components used with the endoscope can identify the fluorescent indicator, or lack thereof, and transmit information to a user.

Systems, methods, and devices for fluorescence imaging with increased dynamic range are disclosed. A system includes an emitter for emitting pulses of electromagnetic radiation and an image sensor comprising a pixel array for sensing reflected electromagnetic radiation, wherein the pixel array comprises a plurality of pixels each configurable as a short exposure pixel or a long exposure pixel. The system includes a controller comprising a processor in electrical communication with the image sensor and the emitter. The system is such that at least a portion of the pulses of electromagnetic radiation emitted by the emitter comprises electromagnetic radiation having a wavelength from about 795 nm to about 815 nm.

An imaging system and method includes a rolling shutter sensor that captures a plurality of images of a scene, a time-varying illumination source that illuminates the scene, and a processor that receives the plurality of images from the rolling shutter sensor and separates the plurality of images into a plurality of feeds. Each of the plurality of images is captured as a series of lines. The rolling shutter sensor and the time-varying illumination source are operated synchronously to cause a plurality of on-cadence lines of the rolling shutter sensor to receive more illumination from the time-varying illumination source than a plurality of off-cadence lines of the rolling shutter sensor. Each of the plurality of feeds has a different contribution of the time-varying illumination source to an overall illumination of the scene.