According to some aspects, a medical imaging system is provided. The medical imaging system includes an illumination device and a medical imaging device. The illumination device includes a first light source configured to emit first light having a wavelength range. The illumination device further includes a second light source configured to emit second light having at least one predetermined wavelength band. The at least one predetermined wavelength band is within the wavelength range. The illumination device further includes a dichroic mirror configured to attenuate a portion of the wavelength range corresponding to the at least one predetermined wavelength band and to multiplex the second light with the first light such that the portion of the wavelength range of the first light is attenuated. The light multiplexed by the dichroic mirror is emitted from the illumination device along an optical axis and irradiates an observation site. The medical imaging device includes at least one sensor configured to receive light from the observation site.

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 relay system includes an opposing pair of rod lens assemblies positioned symmetrically with respect to a central airspace. The rod lens assemblies include a meniscus lens positioned immediately adjacent to a central airspace and with the convex surface facing the airspace, a first lens having positive power with a convex face positioned adjacent to the inner face of the meniscus lens, a rod lens adjacent to the first lens having positive power and an outer optical manipulating structure selected from various designs providing chromatic aberration correction.

The present specification is directed towards endoscopes, such as colonoscopes, that provide a broader field of view and allow extended access of surgical tools and also enable efficient packing of all necessary elements in the tip section, while maintaining their functionality. Also described are methods and systems for capturing and displaying still and video images using an endoscope corresponding to a left-side looking, a front-looking and a right-side looking viewing element of an endoscopic tip generated in a native aspect ratio.

An adapter for use with an endoscope. The adapter including: at least first and second axis-shifted lenses, each of the first and second axis-shifted lenses including a truncated portion, the first and second axis shifted lenses being arranged side by side so that respective first and second optical axes are parallel to each other; and a prism arranged further distally than the first and second axis-shifted lenses, the prism being configured to change a viewing direction of each of the first and second axis-shifted lenses; wherein at least a portion of each of the truncated portions of the first and second axis-shifted lenses is arranged further outward in the radial direction than the prism.

A device comprises a cannula having a first end, a second end, and a channel between the first end and the second end; an imaging probe couplable to the first end of the cannula, where the imaging probe includes: a transducer, and a reflective surface; and a biopsy device coupled to the cannula, where the biopsy device is configured to collect a tissue sample from an organ of a patient.

There are provided a light source device, which is more compact and inexpensive than a known light source device, and an endoscope system having a compact and inexpensive light source device. In a light source device, a light source unit includes a first light source that emits blue light, a second light source that emits broadband green light including not only a green component but also a red component, and an optical filter that adjusts the amount of broadband green light for each wavelength. The optical filter has a characteristic in which the reflectance of the green component is smaller than the reflectance of the red component in the case of reflecting the broadband green light or a characteristic in which the transmittance of the green component is smaller than the transmittance of the red component in the case of transmitting the broadband green light.

An image processing method includes: sequentially generating fluorescent image data in accordance with light intensity of a wavelength component emitted from a fluorescent agent having been administered to a subject irradiated with excitation light, based on image data of the subject each time the image data is generated; sequentially calculating a change amount of the light intensity based on two sets of temporally successive fluorescent image data each time the fluorescent image data is generated; determining whether the change amount is not less than a first threshold indicating fluorescence expression; determining whether the change amount is less than a second threshold indicating a steady state of fluorescence after the change amount is determined to be not less than the first threshold; and outputting a message that fluorescence of the fluorescent agent is in the steady state if the change amount is determined to be less than the second threshold.

An endoscope system including: a light source that generates illuminating light; a controller that receives a light control signal and controls the illuminating light; a light receiving unit having pixels in a matrix; a reading unit that sequentially reads an electrical signal for each line; and an imaging controller that repeats read processing to sequentially read, for each line, the electrical signal from the light receiving unit, and exposure processing for exposing the light receiving unit. Where a blanking period is a time from completion of reading of a last line for a preceding frame to start of reading of a first line for a following frame and a read period is a time from a start of reading of a first line for a frame to completion of reading of a last line of the frame such that the blanking period can be changed without changing the read period.

There is provided an endoscope imaging unit including parallel electric wires, an image sensor located on a front end side by being separated from front ends of the respective electric wires, and having a light incident surface substantially perpendicular to the electric wires, a flexible substrate located between the electric wires and the image sensor, having a circuit, and conductively connecting the respective electric wires to the circuit, an image sensor mounting peninsula portion bent with respect to the substrate, and mounting the image sensor thereon by conductively connecting the image sensor to the circuit, and a circuit mounting peninsula portion extending from the substrate, located by being bent to a side opposite to the image sensor before the image sensor mounting peninsula portion, and mounting and conductively connecting an electronic component or the circuit pattern to the circuit.

An endoscopic imaging system for use in a light deficient environment includes an imaging device having a tube, one or more image sensors, and a lens assembly including at least one optical elements that corresponds to the one or more image sensors. The endoscopic system includes a display for a user to visualize a scene and an image signal processing controller. The endoscopic system includes a light engine having an illumination source generating one or more pulses of electromagnetic radiation and a lumen transmitting one or more pulses of electromagnetic radiation to a distal tip of an endoscope.