CN110575121A - endoscope light-combining illumination system and method - Google Patents
endoscope light-combining illumination system and method Download PDFInfo
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- CN110575121A CN110575121A CN201910822776.4A CN201910822776A CN110575121A CN 110575121 A CN110575121 A CN 110575121A CN 201910822776 A CN201910822776 A CN 201910822776A CN 110575121 A CN110575121 A CN 110575121A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00163—Optical arrangements
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
- A61B1/07—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements using light-conductive means, e.g. optical fibres
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- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
Abstract
The invention discloses an endoscope light combination illumination system, which comprises an optical fiber group; the optical fiber group comprises a plurality of optical fibers, the incident end of each optical fiber is correspondingly provided with a light source, and the incident end face of each optical fiber is tightly attached to the light emergent surface of the light source; and the emergent end of the optical fiber group is connected with the incident end of the emergent optical cable through the light mixing unit. The endoscope light-combining illumination system has the advantages of more compact light path and better illumination effect.
Description
Technical Field
The invention relates to the field of electronic endoscope illumination, in particular to an endoscope light combination illumination system method.
Background
Currently, it is well known in the industry and doctors that electronic endoscopes require supplemental lighting using narrow-band light of certain wavelengths, and customized narrow-band spectra can enhance tissue details or superficial blood vessel contours at specific depths, thereby improving the accuracy of endoscopic screening. The technology for providing supplementary lighting narrow-band light for market competition products comprises two main directions of a filtering method and a light combining method.
Patent CN208598355 discloses an electronic endoscope multicolor lighting system, including narrowband spectrum light sources and mirror body optical cables of a plurality of different wave bands, be provided with the light guide medium between narrowband spectrum light sources and the mirror body optical cable, the light guide medium can be rotatory for the center of rotation along the axis of the circle that comprises a plurality of narrowband spectrum light sources, mirror body optical cable and the coaxial setting of axis of the circle that comprises a plurality of narrowband spectrum light sources, the light inlet face of light guide medium sets up with the play plain noodles of narrowband spectrum relatively, the play plain noodles of light guide medium sets up with the light inlet face of mirror body optical cable relatively. The light guide medium of the scheme only has one light source for irradiation in each rotation, and the illumination intensity and the brightness are limited to a certain extent; gaps are formed between the light guide medium and the light source component and between the light guide medium and the mirror light optical cable, and the light path is not compact enough, so that the energy loss of the light source can be caused.
Disclosure of Invention
in view of the above-mentioned defects in the prior art, the technical problem to be solved by the present invention is to provide an endoscope light combining illumination system and method with a more compact optical path and better illumination effect.
In order to achieve the above object, the present invention provides an endoscope light combination illumination system, which includes an optical fiber set; the optical fiber group comprises a plurality of optical fibers, the incident end of each optical fiber is correspondingly provided with a light source, and the incident end face of each optical fiber is tightly attached to the light emergent surface of the light source; and the emergent end of the optical fiber group is connected with the incident end of the emergent optical cable through the light mixing unit.
In order to make the light path more compact and the space volume smaller, the outer surfaces of the emergent ends of a plurality of optical fibers in the emergent ends of the optical fiber group are mutually attached.
In order to make the color and illumination of the emergent end surface of the integrating prism uniform, the light mixing unit comprises an integrating prism which is arranged between the optical fiber group and the emergent optical cable; and a plurality of optical fibers in the optical fiber group are rotationally and symmetrically arranged according to the geometric center of the section of the integral prism.
In order to make the color and illumination of the emergent end surface of the integrating prism more uniform and the light path more compact, the emergent end surface of the optical fiber group is mutually attached to the incident end surface of the integrating prism.
In order to convert the uniform illumination emitted by the exit end of the integrating prism into uniform brightness, the end face of the exit end of the integrating prism is a frosted surface.
In order to transmit the light into the exit optical cable in a converging manner, the light mixing unit further comprises a light cone, the light cone is arranged between the integrating prism and the exit optical cable, and the central axis of the light cone is coincident with the central axis of the integrating prism.
In order to make the light path more compact and the space volume smaller, the exit end face of the integrating prism is tightly attached to the entrance end face of the light cone.
In order to achieve a uniform equivalent light source spread and to achieve sufficient color angle mixing, the integrating prism length is greater than 10 times the cross-sectional circumscribed circle diameter of the optical fiber.
in order to achieve a uniform equivalent light source spread and to achieve sufficient color angle mixing, the number of optical fibers is equal to the number of integrating prism cross-sectional edges.
In order to achieve a uniform equivalent light source spread and to achieve sufficient color angle mixing, the cross section of the integrating prism is a regular polygon.
Preferably, the light source module includes four light sources, the optical fiber assembly includes four optical fibers, the cross section of the integrating prism is square, and the four optical fibers are rotationally and symmetrically arranged according to the geometric center of the cross section of the integrating prism.
In order to maintain power stability, the light source is disposed on the circuit board.
the invention also provides an endoscope light combination illumination method, which comprises the following steps:
(S1) allowing the light emitted from the plurality of light sources to enter the optical fibers, respectively;
(S2) eliminating color space non-uniformity of light emitted from the exit ends of the respective optical fibers so that illuminance is uniform;
(S3) converting the luminance uniformity into a luminance uniformity.
After the step (S3), the method further includes the steps of:
(S4) converging and transmitting the light into the exit optical cable.
In step (S2), the color space unevenness is eliminated by the integrating prism so that the illuminance is uniform.
In step (S3), the luminance uniformity of the light emitted from the exit end of the integrating prism is converted into a luminance uniformity by setting the exit end face of the integrating prism to be a frosted surface.
The invention has the beneficial effects that: the endoscope light-combining illumination system has the advantages of more compact light path, large processing redundancy and smaller integral volume; the cost is low; each light source is directly coupled into a corresponding optical fiber, and the optical radiation energy density is improved by utilizing the degree of freedom of the optical fiber; when the LED lamp works, all the light sources are lightened simultaneously, and different light amplitude ratios correspond to different lighting modes; the LED lamp has high overall brightness and abundant modes, meets various diagnosis requirements, only needs to adjust the current of a light source during mode switching, and has high response speed.
Drawings
Fig. 1 is a schematic structural diagram of an endoscope light-combining illumination system according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the connection between the optical fiber set, the integrating prism, and the light cone of fig. 1.
Fig. 3 is an optical schematic diagram of the integrating prism of fig. 1.
Detailed Description
the invention is further illustrated by the following examples in conjunction with the accompanying drawings:
An endoscope light combination illumination method comprises the following steps:
S1) enabling the light emitted by the multi-path light source to enter the optical fibers respectively;
S2) eliminating color space non-uniformity of light emitted from the exit ends of the optical fibers so that illuminance is uniform;
S3) converting the uniform illumination into uniform brightness;
S4) converging and transmitting the light into the emergent optical cable.
In step S2), the color space unevenness can be eliminated by the integrating prism so that the illuminance is uniform.
In step S3), the illuminance uniformity emitted from the exit end of the integrating prism can be converted into a uniform brightness by setting the exit end face of the integrating prism to be a frosted surface.
As shown in fig. 1 and fig. 2, the above method can be implemented by an endoscope light-combining illumination system, the system includes an optical fiber set, the optical fiber set 1 includes a plurality of optical fibers 1a, an incident end of each optical fiber 1a is correspondingly provided with a light source 2, an incident end face of each optical fiber 1a is closely attached to a light-emitting surface of the light source 2, and an emergent end of the optical fiber set 1 is connected with an incident end of an emergent optical cable 4 through a light-mixing unit. The light mixing unit is used for transmitting the light source to the emergent optical cable and enables the color brightness of the end face of the emergent end of the light mixing unit to be more uniform through adjustment. The number of the light sources 2 is equal to the number of the optical fibers 1a, the multiple light sources 2 are arranged on the circuit board 3, and a heat radiating fin is arranged between the circuit board 3 and the light sources 2. In the present embodiment, the incident ends of the plurality of optical fibers 1a are perpendicular to the circuit board 3.
The outer surfaces of the exit ends of the plurality of optical fibers 1a in the exit ends of the optical fiber group 1 are bonded to each other. The exit ends of the optical fibers 1a are bundled together so that the outer surfaces of the exit ends are attached to each other, and in other embodiments, the exit ends may be attached by means of adhesion, which is not limited herein.
Each light source 2 travels an equal path in its corresponding optical fiber 1 a. The consistency of the light intensity of the light output by the emergent optical cable is ensured. The colors of the plurality of light sources are different or are the same. The light source is, for example, an LED, and in other embodiments, the light source may also be a full spectrum laser light source or other light sources, which is not limited herein.
The light mixing unit comprises an integral prism 6, and the integral prism 6 is arranged between the optical fiber group 1 and the emergent optical cable 4; the plurality of optical fibers 1a in the optical fiber group 1 are arranged rotationally symmetrically with respect to the geometric center of the cross section of the integrating prism 6. The integral prism 6 is arranged, the number of equivalent light sources can be expanded through multiple total reflection, and the color and illumination of the emergent end face of the integral prism are uniform. The rotationally symmetrical arrangement means that a plurality of optical fibers in the optical fiber group are uniformly arranged in an annular array by taking the axis of the geometric center of the section of the integral prism 6 as a central axis.
As shown in fig. 3, the color block in the thick line frame indicates the emitting end, the thin line frame indicates the first reflection effect, the frameless line indicates the second reflection result, and the multiple reflections are sequentially expanded outward, so that the emitting end of the integrating prism is equivalently irradiated by the multicolor light sources with the quantity far greater than that of the actual multicolor light sources, and the non-uniformity of the light color positions of the light sources with different colors is eliminated.
The end face of the emergent end of the optical fiber group 1 is mutually attached to the end face of the incident end of the integrating prism 6, so that the optical path is more compact, and the performance of nonuniform light color positions of light sources with different colors is better eliminated. In other embodiments, the integrating prism 6 may be connected to the optical fiber set 1 and the light cone 5 in other ways, which are not limited herein.
the end face of the emergent end of the integrating prism 6 is a frosted surface, so that the illumination is uniformly converted into uniform brightness, and the emergent angle difference of different colors is eliminated.
the light mixing unit further comprises a light cone 5, the light cone 5 is arranged between the integrating prism 6 and the exit optical cable 4, and the central axis of the light cone 5 coincides with the central axis of the integrating prism 6. The area of the incident end face of the light cone 5 is larger than that of the emergent end face of the integrating prism 6, and the area of the incident end face of the integrating prism 6 is larger than that of the emergent end face of the optical fiber group 1.
The exit end face of the integrating prism 6 is closely attached to the entrance end face of the light cone 5.
the length of the integral prism is more than 10 times of the diameter of the section circumscribed circle of the optical fiber 1 a; the number of the optical fibers 1a is equal to the number of the cross-sectional edges of the integrating prism 6; the cross section of the integrating prism 6 is a regular polygon (a regular quadrangle in the present embodiment). The integrating prism satisfies the above condition setting, and can realize uniform equivalent light source expansion and sufficient color angle mixing.
in this embodiment, the light source module includes four light sources 2, the optical fiber group 1 includes four optical fibers 1a, the cross section of the integrating prism 6 is square, and the four optical fibers 1a are rotationally symmetrically arranged according to the geometric center of the cross section of the integrating prism 6. The connection between the light source module, the optical fiber group 1, the integrating prism 6, the light cone 5 and the exit optical cable 4 can be realized by mutual cooperation by means of respective external auxiliary connections.
The endoscope light-combining illumination system has the advantages of more compact light path, large processing redundancy and smaller integral volume; the cost is low; each light source is directly coupled into a corresponding optical fiber, and the optical radiation energy density is improved by utilizing the degree of freedom of the optical fiber; when the LED lamp works, all the light sources are lightened simultaneously, and different light amplitude ratios correspond to different lighting modes; the LED lamp has high overall brightness and abundant modes, meets various diagnosis requirements, only needs to adjust the current of a light source during mode switching, and has high response speed.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. An endoscope light-combining illumination system is characterized in that: comprises an optical fiber group; the optical fiber group (1) comprises a plurality of optical fibers (1 a), the incident end of each optical fiber (1 a) is correspondingly provided with a light source (2), and the end face of the incident end of each optical fiber (1 a) is tightly attached to the light emergent surface of each light source (2); and the emergent end of the optical fiber group (1) is connected with the incident end of the emergent optical cable (4) through the light mixing unit.
2. The combined endoscope illumination system of claim 1, wherein: the outer surfaces of the emergent ends of the optical fibers (1 a) in the emergent ends of the optical fiber group (1) are mutually attached.
3. The combined endoscope illumination system of claim 1, wherein: the light mixing unit comprises an integrating prism (6), and the integrating prism (6) is arranged between the optical fiber group (1) and the emergent optical cable (4); the end faces of the optical fibers (1 a) in the optical fiber group (1) which are contacted with the integrating prism are rotationally and symmetrically arranged according to the geometric center of the section of the integrating prism (6).
4. The combined endoscope illumination system of claim 3, wherein: the end face of the emergent end of the optical fiber group (1) is attached to the end face of the incident end of the integrating prism (6); the end face of the emergent end of the integrating prism (6) is a frosted surface.
5. The combined endoscope illumination system of claim 3, wherein: the light mixing unit further comprises a light cone (5), the light cone (5) is arranged between the integrating prism (6) and the emergent optical cable (4), and the central axis of the light cone (5) is overlapped with the central axis of the integrating prism (6).
6. The combined endoscope illumination system of claim 5, wherein: the end face of the emergent end of the integrating prism (6) is tightly attached to the end face of the incident end of the light cone (5).
7. The combined endoscope illumination system of claim 3, wherein: the length of the integral prism is more than 10 times of the diameter of the section circumcircle of the optical fiber (1 a).
8. The combined endoscope illumination system of claim 3, wherein: the section of the integral prism (6) is a regular polygon; the number of the optical fibers (1 a) is equal to the number of the cross-sectional sides of the integrating prism (6).
9. An endoscope light combination illumination method is characterized in that: the steps include:
(S1) allowing the light emitted from the plurality of light sources to enter the optical fibers, respectively;
(S2) eliminating color space unevenness of light emitted from the exit ends of the respective optical fibers and making illuminance uniform;
(S3) converting the luminance uniformity into a luminance uniformity.
10. The combined light illumination method for an endoscope as described in claim 9, wherein: after the step (S3), the method further includes the steps of:
(S4) converging and transmitting the light into an exit optical cable;
and, in the step (S2), the color space unevenness is eliminated by the integrating prism and the illuminance is made uniform; in step (S3), the luminance uniformity of the light emitted from the exit end of the integrating prism is converted into a luminance uniformity by setting the exit end face of the integrating prism to be a frosted surface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910822776.4A CN110575121A (en) | 2019-09-02 | 2019-09-02 | endoscope light-combining illumination system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910822776.4A CN110575121A (en) | 2019-09-02 | 2019-09-02 | endoscope light-combining illumination system and method |
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| CN110575121A true CN110575121A (en) | 2019-12-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111288308A (en) * | 2020-03-04 | 2020-06-16 | 派诺西智能科技(苏州)有限公司 | Intelligent light source, intelligent optical fiber lamp system and intelligent optical fiber lamp control method |
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| CN200976052Y (en) * | 2006-09-08 | 2007-11-14 | 中国科学院光电研究院 | Laser array optical fiber coupled illumination system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111288308A (en) * | 2020-03-04 | 2020-06-16 | 派诺西智能科技(苏州)有限公司 | Intelligent light source, intelligent optical fiber lamp system and intelligent optical fiber lamp control method |
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Effective date of registration: 20210826 Address after: 401120 1-1, 2-1, 3-1, building 5, No. 18, Cuiping Lane 2, Huixing street, Yubei District, Chongqing Applicant after: Chongqing Jinshan Medical Technology Research Institute Co.,Ltd. Address before: 401120 1 office buildings, Jinshan International Industrial City, 18 of Nei sang Road, Hui Xing street, Yubei District, Chongqing. Applicant before: CHONGQING JINSHAN MEDICAL APPLIANCE Co.,Ltd. |
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