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CN-121987127-A - Visible light/fluorescence 8k laparoscope interference imaging system

CN121987127ACN 121987127 ACN121987127 ACN 121987127ACN-121987127-A

Abstract

The invention discloses a visible light/fluorescence 8k laparoscope interference imaging system which comprises a lens, a lens rod, a handheld controller and an information processing and display terminal, wherein the lens comprises an imaging structure, a light source and a data power line, the imaging structure is provided with a central hole, the light source is embedded into the central hole of the imaging structure and provides visible light and fluorescence radiation to illuminate an observation area, the data power line transmits data obtained by the imaging structure to the information processing and display terminal and supplies power to the imaging structure and the light source, the handheld controller is fixed on the lens rod and is used for inputting imaging mode control signals, the information processing and display terminal is composed of a computer host and a display, the computer host is used for processing data transmitted by a lens rod cable and the handheld controller and controlling the lens, and the display is used for displaying imaging results of the lens after the computer host is restored. The invention has the advantages of high resolution of 8k, extremely small number of required detection pixels, wide wave band, small volume and light weight.

Inventors

  • REN ZHIBIN

Assignees

  • 哈尔滨工业大学

Dates

Publication Date
20260508
Application Date
20260314

Claims (6)

  1. 1. The visible light/fluorescence 8k laparoscope interference imaging system is characterized by comprising a lens, a lens rod, a handheld controller and an information processing and display terminal, wherein: the lens comprises an imaging structure, a light source and a data power line, wherein the imaging structure is provided with a central hole, the light source is embedded into the central hole of the imaging structure and provides visible light and fluorescent radiation to illuminate an observation area, and the data power line transmits data obtained by the imaging structure to the information processing and display terminal and simultaneously supplies power to the imaging structure and the light source; The hand-held controller is fixed on the mirror rod and is used for inputting an imaging mode control signal; The information processing and displaying terminal is composed of a computer host and a display, wherein the computer host is used for processing data transmitted by the lens rod cable and the handheld controller and controlling the lens, and the display is used for displaying an imaging result of the lens after the computer host is restored.
  2. 2. The visible light/fluorescent 8k laparoscope interference imaging system according to claim 1, wherein the imaging structure comprises a microtube layer, a microlens layer, a micro-interferometer layer and a support frame, the microtube layer comprises a plurality of microtubes radially arranged along the circumference of a central hole, the microlens layer is arranged below the microtube layer and comprises a plurality of microlenses, the hole center of each microtube coincides with the optical axis of the microlens below the microtube layer, the microtubes restrict the light angle entering the microlens below the microtube layer to obtain a required field angle, the microtubes and the microlenses are radially arranged, one micro-interferometer strip is connected below each microlens strip, all the micro-interferometer strips form the micro-interferometer layer, one data power line is connected below each micro-interferometer strip, all the data power lines are connected to a mirror rod, and the support frame is used for fixing the microtube layer, the microlens layer and the micro-interferometer layer.
  3. 3. The visible light/fluorescent 8k laparoscopic interference imaging system according to claim 2, wherein each of the micro-lens strips and the micro-interferometer strips form an imaging unit strip, the number of micro-lenses is even, the middle two micro-lenses collect the broadband light of the observation area reflection light source, and then the broadband light is transmitted into two ultra-narrow band comb spectral filters through two optical waveguides, and the broadband light is equally divided into The ultra-narrow band spectrum, the spectrum with the same wavelength filtered by the two ultra-narrow band comb spectrum filters enters a miniature Mach-Zehnder interferometer to form interference fringes, and the electric signal is output by the photoelectric detector pixels of the linear array photoelectric detector, so that a spectrum value is obtained, the first Individual spectra of light Corresponding spectral values The method comprises the following steps: Wherein, the For the purpose of observing the distance, i.e. the object distance, Is the center distance between two microlenses in the middle of one microlens strip, The two microlenses in the middle are obtained together Spectral points ; Then the light collected by two adjacent microlenses on the left and right sides of the middle microlens is processed by the same method to obtain the first microlens Individual spectra of light Corresponding spectral values The method comprises the following steps: Wherein, the Is the center distance between two adjacent microlenses on the left and right sides of the middle two microlenses on one microlens strip, and the group of center distances are Microlens acquisition of (2) Spectral points ; Let the number of microlenses on each microlens stripe be The light collected by the two microlenses at the two outermost ends is processed by the same method to obtain the first Individual spectra of light Corresponding spectral values The method comprises the following steps: Wherein, the Is the center distance between two microlenses at the two outermost ends of a microlens strip, and the group of center distances are Microlens acquisition of (2) Spectral points ; And finally, transmitting the electric signals of all the frequency spectrum points to a control and display terminal through a data power line in the mirror rod to perform inverse Fourier transform, thus obtaining an observation image.
  4. 4. The visible/fluorescent 8k laparoscopic interferometric imaging system of claim 3, characterized in that the imaging unit strip has the highest frequency at the object side Expressed as: in the formula, Is that The smallest wavelength in the ultra-narrow band spectrum.
  5. 5. The visible light/fluorescent 8k laparoscopic interference imaging system according to claim 3, wherein when the object resolution of the lens reaches 8k resolution, parameter conditions to be satisfied are: Wherein, the Is the center distance between two microlenses at the two outermost ends of one microlens strip, Is that The smallest wavelength in the individual ultra-narrow band spectra; for the pixel pitch of the detector, Is the optical power of a traditional 4k laparoscope.
  6. 6. The visible light/fluorescent 8k laparoscopic interferometric imaging system of claim 3, characterized by a total number of detector pixels required by the lens The method comprises the following steps: Wherein, the The number of the linear array detectors required for the lens.

Description

Visible light/fluorescence 8k laparoscope interference imaging system Technical Field The invention belongs to the technical field of medical instruments, and relates to a laparoscopic imaging system, in particular to a laparoscopic imaging system with resolution reaching 8k and working wave band coverage of visible light and fluorescence. Background The traditional 4k laparoscope consists of an objective lens, a relay lens and an eyepiece. When the device works, the illumination light source (visible light or fluorescence) illuminates a focus area, reflected light of the focus area is amplified by the objective lens after being imaged, is transferred by the relay transfer lens and then is projected to the ocular lens, and the ocular lens projects parallel light beams to the human eyes or an area array detector (CCD or CMOS) behind the adapter. The current mainstream 4k resolution traditional laparoscope is widely applied to clinic from 2018, the resolution is determined by the pixel spacing of a detector (the current mainstream is 2 μm), if the resolution is doubled to reach 8k resolution, the pixel is not simply lifted to 8k, but the pixel spacing is reduced by half (1 μm) while the pixel is lifted. Limited by the current state of the art, the reduction of the pixel pitch is difficult to achieve in a short period of time. In addition, the traditional 4k laparoscope has a complex structure, the F/# of the objective lens is difficult to reduce, the high-frequency imaging quality is difficult to improve, and the relay transfer lens adopts a hard rod lens structure, so that the relay transfer lens has the advantages of high weight, inflexibility and inconvenience in clinical application. Disclosure of Invention The invention provides a visible light/fluorescence 8k laparoscope interference imaging system, which adopts an interference imaging technology, adopts a linear array detector with more mature process and lower cost on the premise of not changing the prior detector process level, and obtains 8k imaging resolution through reasonable design. The invention aims at realizing the following technical scheme: A visible light/fluorescence 8k laparoscope interference imaging system comprises a lens, a lens rod, a handheld controller and an information processing and display terminal, wherein: the lens comprises an imaging structure, a light source and a data power line, wherein the imaging structure is provided with a central hole, the light source is embedded into the central hole of the imaging structure and provides visible light and fluorescent radiation to illuminate an observation area, and the data power line transmits data obtained by the imaging structure to the information processing and display terminal and simultaneously supplies power to the imaging structure and the light source; The imaging structure comprises a microtubule layer, a microlens layer, a micro-interferometer layer and a support frame, wherein the microtubule layer is formed by a plurality of microtubules radially arranged along the circumference of a central hole, the microlens layer is positioned below the microtubule layer and is formed by a plurality of microlenses, the hole center of each microtubule coincides with the optical axis of the microlens positioned below the microtubule layer, and the microtubules restrict the light angle entering the microlens positioned below the microtubule layer to obtain a required view angle; The hand-held controller is fixed on the mirror rod and is used for inputting an imaging mode control signal; The information processing and displaying terminal is composed of a computer host and a display, wherein the computer host is used for processing data transmitted by the lens rod cable and the handheld controller and controlling the lens, and the display is used for displaying an imaging result of the lens after the computer host is restored. Compared with the prior art, the invention has the following advantages: the interference imaging system provided by the invention eliminates the relay image transfer lens and the ocular lens in the traditional 4k laparoscope, simplifies the structure of the system, and has the advantages of far less number of required detector pixels than the number of detector pixels of the traditional 4k laparoscope, capability of covering visible light/fluorescence wavelength in a working band, 8k high resolution, extremely less number of required detector pixels, wide band, small volume and light weight. Drawings FIG. 1 is a schematic diagram of a visual/fluorescent 8k laparoscopic interferometric imaging system, in which a 1-hand controller, a 2-lens, a 3-lens rod, and a 4-information processing and display terminal are shown; FIG. 2 is a schematic view of a lens structure of a visible light/fluorescence 8k laparoscopic interferometric imaging system, in which a 5-light source, a 6-microtube layer, a 7-microlens layer, an 8-micro interferometer layer, a 9-support frame, a