11 results about "Lens Fiber" patented technology

The invention provides a lens optical fiber array coupling system and a chromaticity measurement system and method, and belongs to the field of chromaticity measurement, and the lens optical fiber array coupling system comprises an imaging lens which is used for obtaining incident light of an object to be measured and guiding the incident light to an array optical fiber; the end face of the array optical fiber is located on the first image plane of the imaging lens, the normal of at least part of the optical fiber end face in the array optical fiber has a deflection angle relative to the normal of the first image plane, and the deflection angle is angle deflection performed by taking the main light ray of the light received by the corresponding optical fiber position as a target reference; and the imaging spectrometer is used for receiving the light information sent by the array optical fiber. By setting the deflection angle of the array optical fiber, the effective receiving area of the optical fiber is maximized, and the change of the transmission efficiency of light of different wavebands is avoided.

The application provides a light frequency comb generation device and method based on a series double microcavity structure. The device comprises a pump laser, an optical amplifier, a polarization controller, a first tapered lens fiber, a series double microcavity structure and a second tapered lens fiber connected in sequence. The second tapered lens fiber is connected to a spectrum analyzer and an oscilloscope through a first coupler. The optical amplifier is used to amplify the power of the output laser of the pump laser to reach the power threshold required for microcavity light frequency comb generation. The polarization controller is used to adjust the polarization mode of the output laser of the optical amplifier so that the polarization mode of the laser is the same as the polarization mode of the microcavity light frequency comb to be generated. The series double microcavity structure comprises a bus waveguide and two microcavities coupled thereto and is used to generate a light frequency comb. The application can solve the technical problems of high pump power, low energy conversion efficiency and low parameter selection freedom of the existing light frequency comb based on a single microcavity structure.

The invention provides a VCSEL-based NPO optical engine and an optical device, and relates to the technical field of photoelectric modules. The VCSEL-based NPO light engine comprises a substrate, a photoelectric device, a first heat sink and a lensed fiber combination. The photoelectric device is arranged on the substrate and electrically connected with the substrate, and the first heat sink is connected with the substrate. The lens fiber combination is arranged on the side, away from the substrate, of the first heat sink and is in light path coupling connection with the photoelectric device. The substrate and / or the first heat sink are / is provided with a heat dissipation structure. The NPO light engine based on the VCSEL adopts the light path design perpendicular to the substrate, so that the space is saved, the occupied area is greatly reduced, the space utilization rate can be improved, the signal transmission path is reduced, the loss is reduced, and the transmission efficiency is improved.

The present invention relates to an apparatus for softening a crystalline lens nucleus (100) in a cataract phacoemulsification treatment comprising an electric current pulse generator (11) to supply a pulse current to a handpiece (12), wherein the pulse current generates a pulsatile magnetic field, and to hydrodissect the lens nucleus with iron oxide nanoparticle solution to loosen the lens nucleus as well as to infiltrate the lens nucleus (14) with the iron oxide nanoparticles (13), characterised in that the needle tip (24) of the handpiece (12) conducts the generated pulsatile magnetic field to the lens nucleus which causes vibration of iron oxide nanoparticles which emanates a mechanical force to break interdigitating bonds between lens fibers, leading to a controlled softening and fragmenting of the lens nucleus, wherein the electric current pulse generator (11) is configured to produce pulse currents with adjustable voltage and frequency parameters, and the iron oxide nanoparticle solution (13) further comprises a superparamagnetic property functionalised with a biocompatible coating.

This invention discloses a disposable spinal endoscope system, comprising a tube containing a dedicated conduit, an operating channel, and two inlet / outlet water pipes arranged axially within the tube. A disposable, shape-memory flexible lens fiber is inserted into the dedicated conduit. A handle is fixedly connected to the outer wall of the proximal end of the tube. The handle is a flip-top structure comprising two handle plates, one end of which is rotatably connected. Each handle plate has a semi-groove on its opposite side for fixing the flexible lens fiber. When the two handle plates are closed together, the two semi-grooves are positioned opposite each other, forming a groove with an inner diameter matching the outer diameter of the flexible lens fiber. The distal end of the flexible lens fiber is bent under no stress. This invention avoids repeated disinfection and reuse of the lens, prevents spinal endoscope breakage and damage, significantly reduces medical costs, and allows for adjustment of the field of view.

The utility model provides a low-loss lens optical fiber array unit, which comprises a substrate, a cover plate and an optical fiber, the optical fiber is arranged between the substrate and the cover plate, the front end of the substrate is provided with a total reflection surface and a lens, the optical fiber reflects light signals to the lens through the total reflection surface, the front end of the substrate is provided with a light-permeable convex part, and the convex part is provided with a lens. The total reflection surface is arranged on the first side of the lug boss; the optical fiber is arranged on the second side of the lug boss; optical fiber matching paste is filled between the end surface of the optical fiber and the surface of the lug boss; the utility model can reduce the energy loss of optical signals and improve the performance of an optical system.

This invention discloses a liquid infrared material lens fiber, its preparation method, and its application, belonging to the field of fiber optic device fabrication technology. The preparation method includes: cutting, cleaning, and flattening the end of a transmission fiber; quantitatively applying a liquid infrared material, such as a low softening point glass precursor, to the flat end face of the fiber; utilizing the wetting and surface tension between the material and the end face, causing it to naturally shrink and self-assemble into an initial spherical microlens structure; subsequently, a stabilization treatment is performed to solidify and bond the fiber, resulting in the lens fiber. This invention overcomes the high absorption loss defect of traditional organic adhesives in the mid- and far-infrared bands through the synergy of the material and the self-assembly process, and avoids damage to the end face of brittle fibers caused by mechanical hard processing. It can be reliably used for beam coupling and shaping in the near-infrared to mid- and far-infrared bands.

The invention relates to the technical field of coupling and packaging of photoelectric devices, in particular to a multi-group multi-degree-of-freedom lens optical fiber combined coupling machine and a coupling method. The coupling machine comprises a coupling clamping platform, and a first FA clamping assembly, a second FA clamping assembly, a first lens clamping assembly, a second lens clamping assembly and a loading and posture calibration assembly which are arranged relative to the coupling clamping platform. The first FA clamping assembly, the second FA clamping assembly, the first lens clamping assembly and the second lens clamping assembly can work at the same time, optical fiber arrays (or optical fibers) and lenses can be accurately coupled and packaged at the same time, coupling of multiple optical channels can be completed on the same device in parallel, and the coupling efficiency is improved. And large-scale, high-efficiency and high-yield production of the multi-channel optical device is realized.

The invention relates to a lens type optical fiber array stacking structure. The convex ribs of the optical fiber array modules correspond to the two sliding rails, the first passive alignment parts and the second passive alignment parts of the two optical fiber array modules are matched in a concave-convex mode, and the first bearing part of the butt joint end lens group and the first lens bearing platform of the substrate are arranged. And / or the second bearing part of the chip end lens group and the second lens bearing platform of the substrate are arranged, so that the optical fiber array module and each lens group can be passively positioned on a correct focal length during assembly, the yield is improved, and the cost is reduced.

The application provides a VCSEL-based NPO light engine and light device, and relates to the technical field of optoelectronic modules.The VCSEL-based NPO light engine comprises a substrate, an optoelectronic device, a first heat sink and a lens fiber combination.The optoelectronic device is arranged on the substrate and electrically connected to the substrate, and the first heat sink is connected to the substrate.The lens fiber combination is arranged on the side of the first heat sink away from the substrate and is optically coupled to the optoelectronic device.The substrate and / or the first heat sink is provided with a heat dissipation structure.The VCSEL-based NPO light engine adopts an optical path design perpendicular to the substrate, saves space, greatly reduces the occupied area, can improve the space utilization rate, reduces the signal transmission path, reduces the loss and improves the transmission efficiency.

The application relates to a high-efficiency fiber-coupled laser with monitoring for illumination, which comprises a casing, the casing comprises a frame and a base arranged under the frame, an electrode one is arranged at the front end of the frame and extends out of the frame, a heat sink is arranged in the frame and on the base, a conductive wire one is arranged between the heat sink and the electrode one, a laser chip is arranged in the heat sink, a detector heat sink is arranged on the base and away from the side of the heat sink which is away from the electrode one, an electrode two is connected to the detector heat sink through a conductive wire two and extends out of the side of the frame, and a lens fiber is arranged on the side of the laser chip which is away from the conductive wire one. The application has the advantages that the blue light is transmitted to the illumination site by the fiber, the excited fluorescent light becomes various color light sources by the lamp at the fiber terminal, the safety is high, the alarm function is provided, and the high-voltage line can be kept away from the flammable and explosive site, so that the safety is ensured.