An optical transmission module includes a substrate having an opening portion; an optical element closing an opening on the lower surface side of the substrate and converting an electric signal into an optical signal or the optical signal into the electric signal; an optical fiber transmitting the optical signal; a ferrule closing an opening on the upper surface side of the substrate and having an optical fiber insertion hole; and a resin filled into a space surrounded at least by the substrate, the optical element, the ferrule, and a distal end of the optical fiber, wherein the ferrule has a resin filling hole spaced apart from the optical fiber insertion hole to fill the space with the resin, and an angle formed by an axis of the optical fiber insertion hole and an axis of the resin filling hole is equal to or more than 0° and less than 90°.

A light guide unit includes a light guide member and a protection member surrounding the light guide member. The light guide member includes an optical fiber having an outer diameter. The protection member is formed in a network structure by knitting a metal member having a flat cross-sectional shape by bending the metal member in a direction in which the thickness of the metal material is thin, and a gap smaller than the outer diameter is formed along the axial direction.

A system comprises a waveguide apparatus comprising a plurality of input waveguides, a multimode waveguide, and a guided-wave transition coupling the plurality of input waveguides to the multimode waveguide. The system further comprises at least one light source configured to excite in turn each of a plurality of the input waveguides, or each of a plurality of combinations of the input waveguides, thereby generating a plurality of different light patterns in turn at an output of the waveguide apparatus. The waveguide apparatus is configured to direct each of the plurality of different light patterns to a target region. The system further comprises at least one detector configured to detect light transmitted, reflected or emitted from the target region in response to each of the different light patterns, and to output signals representing the detected light.

Systems, methods, and devices for directed to duplex imaging techniques for combining high-resolution surface images obtained with a Scanning Fiber Endoscope (SFE), and high-resolution penetrating OCT images obtained through Optical Coherence Tomography (OCT), from a SFE, and interleaving frames to improve resolution and identify below surface information of biological structures.

A plurality of kinds of illumination light are emitted while being switched according to a specific light emission pattern. A plurality of observation images, which are obtained from image pickup of an object to be observed illuminated with each illumination light, are acquired. Control to display the plurality of observation images on a display unit while switching the plurality of observation images according to a specific display pattern is performed. The specific light emission pattern is fixed and the specific display pattern is changeable.

The disclosure relates to diagnostic, surgical, and/or therapeutic devices for being introduced into the human or animal body or for in vitro examination of human or animal blood samples or other body cells, in particular to an endoscope or a disposable endoscope that includes at least one illumination light guide and/or image guide for transmitting electromagnetic radiation, the illumination light guide or image guide having a proximal end face for incoupling or outcoupling of electromagnetic radiation and a distal end face for incoupling or outcoupling of electromagnetic radiation. The proximal and/or distal end faces consist of plastic elements that are transparent at least partially or in sections thereof, the transparent plastic being biocompatible and/or having non-toxic properties to human or animal cell cultures for exposure durations of less than one day. This allows for the production of assemblies for disposable endoscopes, inter alia.

An optical fibre having a functionalised distal exploration end including a sheath, and a ferrule rigidly connected to the sheath at the distal exploration end, characterised in that the distal exploration end has a functionalised head which is removably attached on the ferrule. Also, a method of assembling the optical fibre.

The disclosure relates to an endoscopic light source that includes a first emitter. The first emitter may emit light of a first wavelength at a dichroic mirror which reflects the light of the first wavelength to a plurality of optical fibers. The endoscopic light source further comprises a second emitter. The second emitter may emit light of a second wavelength at a second dichroic mirror which reflects the light of the second wavelength to the plurality of optical fibers. In one embodiment, the first dichroic mirror may be transparent to the light of the second wavelength, allowing the light of the second wavelength to pass through the first dichroic mirror.

An endoscope includes an insertion unit, an operation unit, an emission end, a first light guide and a second light guide that guide illumination light emitted from a light source unit to the emission end, a lens member that suppresses a variation in a relative intensity of each color light of the illumination light, and a connection unit that optically connects the first light guide, the second light guide, and the lens member; and the lens member is disposed between the first light guide and the second light guide, and the connection unit and the lens member are provided in the operation unit.

A light-guiding structure according to the invention is used in an endoscope for guiding light along a lengthwise direction and includes a first portion and a second portion. The first portion extends in a single cross section along the lengthwise direction. The second portion extends in a varying cross section along the lengthwise direction and is connected to an end of the first portion in the lengthwise direction. An endoscope tip includes a circuit board, an image-capturing component, a light-emitting component, and the light-guiding structure. The light-guiding structure can fit the contours of the circuit board and the image-capturing component to increase space usage for obtaining more cross-sectional area. For the production of the light-guiding structure, the second portion is formed by shaping a portion directly extending form the end of the first portion or by an additional material directly bonded to the end of the first portion by molding.