CN115721256A - OCT equipment auxiliary debugging device and OCT equipment debugging system - Google Patents
OCT equipment auxiliary debugging device and OCT equipment debugging system Download PDFInfo
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- CN115721256A CN115721256A CN202211423561.3A CN202211423561A CN115721256A CN 115721256 A CN115721256 A CN 115721256A CN 202211423561 A CN202211423561 A CN 202211423561A CN 115721256 A CN115721256 A CN 115721256A
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Abstract
The invention provides an OCT equipment auxiliary debugging device and an OCT equipment debugging system, and relates to the technical field of ophthalmic optical coherence tomography equipment debugging, and the OCT equipment auxiliary debugging device provided by the invention comprises: the device comprises a light splitting module, an illumination light detection module and an eyeground simulation light emitting module; the light splitting module and the illumination light detection module form an illumination light detection optical path for adjusting the confocal property of the detected OCT equipment; the fundus simulation light emitting module and the light splitting module form a fundus simulation light path which is used for imaging on the OCT equipment to be detected. The OCT equipment auxiliary debugging device and the OCT equipment debugging system provided by the invention can replace human eyes to debug OCT equipment, the debugging effect cannot be influenced by human eye difference, and the debugging stability and consistency are improved.
Description
Technical Field
The invention relates to the technical field of ophthalmic optical coherence tomography equipment debugging, in particular to an OCT (optical coherence tomography) equipment auxiliary debugging device and an OCT equipment debugging system.
Background
An ophthalmic optical coherence tomography apparatus (OCT apparatus) generally has both OCT and fundus imaging functions, and a fundus image serves as a navigation chart for OCT. In an OCT apparatus using a laser line scanning ophthalmoscope (SLO), the OCT and SLO share a part of an optical path while measurement imaging is performed on the fundus. During debugging, the main light path is debugged to enable the OCT illumination light and the SLO illumination light to be focused on the retina of a human eye at the same time, and the SLO imaging light path is debugged to enable the SLO eyeground scattered light to be imaged on the camera. At present, human eyes are generally adopted to observe and debug OCT equipment, a main scanning lens and an ocular lens are fixed firstly, collimating lenses of an OCT light path and an SLO light path are respectively debugged to enable illumination light to be focused on a retina, and then an imaging objective lens of an SLO is debugged to enable fundus images shot by a camera to be clear. Because the debugging time is longer, the eyes are easy to be tired, and different eyes have certain difference, thereby leading to the relatively poor consistency of the debugging effect of the equipment.
Disclosure of Invention
The invention aims to provide an auxiliary debugging device and a debugging system for OCT equipment, so as to replace human eyes to debug the OCT equipment and improve the stability and consistency of debugging.
In a first aspect, the present invention provides an OCT apparatus auxiliary debugging apparatus, including: the device comprises a light splitting module, an illumination light detection module and an eyeground simulation light emitting module;
the light splitting module and the illumination light detection module form an illumination light detection optical path for adjusting the confocal property of the detected OCT equipment;
the fundus simulation light-emitting module and the light splitting module form a fundus simulation light path which is used for imaging on the measured OCT equipment.
With reference to the first aspect, the present invention provides a first possible implementation manner of the first aspect, wherein the light splitting module includes a light splitting prism, a half-reflecting plate, or a first dichroic mirror.
With reference to the first aspect, the present invention provides a second possible implementation manner of the first aspect, wherein the illumination light detection module includes: the first imaging objective lens is positioned between the confocal detection camera and the light splitting module;
the OCT illumination light and the SLO illumination light emitted from the tested OCT equipment pass through the light splitting module and then are converged on the confocal detection camera through the first imaging objective lens.
With reference to the first aspect, the present invention provides a third possible implementation manner of the first aspect, wherein the fundus simulation light emitting module includes: the second imaging objective lens, the resolution plate and the infrared illumination light source;
the light emitted by the infrared illumination light source is irradiated on the resolution plate, and the light transmitted through the resolution plate is emitted into the measured OCT equipment through the second imaging objective lens and the light splitting module.
With reference to the third possible implementation manner of the first aspect, the present invention provides a fourth possible implementation manner of the first aspect, wherein the wavelength of the infrared illumination light source is 680nm to 980nm, or the wavelength of the infrared illumination light source is greater than 1100nm.
In a second aspect, the present invention provides an OCT apparatus debugging system, including: an OCT device to be tested and the auxiliary debugging device of the OCT device of the first aspect;
the measured OCT device includes: the OCT system comprises an OCT sample arm module, an eyeground laser SLO module, a fixation target module and a common light path module;
and the light rays of the OCT sample arm module, the fundus laser SLO module and the fixation target module are respectively emitted into the common light path module and are emitted into the light splitting module through the common light path module.
With reference to the second aspect, the present invention provides a first possible implementation manner of the second aspect, wherein the common optical path module includes: the second dichroic mirror, the main scanning lens, the third dichroic mirror and the ocular lens;
the second dichroic mirror, the main scanning lens, the third dichroic mirror, the ocular and the light splitting module are sequentially arranged at intervals;
light rays of the OCT sample arm module and the fundus laser SLO module are emitted into the second dichroic mirror, and light rays of the fixation target module are emitted into the third dichroic mirror.
In combination with the second aspect, the present invention provides a second possible implementation manner of the second aspect, wherein the OCT sample arm module includes: the OCT interferometer comprises an OCT interferometer, a collimating lens and a two-dimensional galvanometer, wherein divergent light beams emitted by the OCT interferometer form collimated light beams after passing through the collimating lens, and then enter the OCT equipment auxiliary debugging device through the two-dimensional galvanometer and the common light path module.
With reference to the second aspect, the present invention provides a third possible implementation manner of the second aspect, wherein the fundus laser SLO module includes: the SLO light source, the linear mirror, the first reflector, the third imaging objective lens and the SLO camera;
and light emitted by the SLO light source is emitted into the first reflector through the linear mirror, and light emitted by the fundus simulation light-emitting module is imaged on the SLO camera through the light splitting module, the common light path module, the first reflector and the third imaging objective lens.
With reference to the second aspect, the present invention provides a fourth possible implementation manner of the second aspect, wherein the fixation target module includes: the light emitted by the fixation light source is shot into the common light path module through the lens and the second reflector.
The embodiment of the invention has the following beneficial effects: the OCT device debugging system has the advantages that the illumination light detection optical path is formed by the light splitting module and the illumination light detection module, the measured OCT device is adjusted to be confocal through the illumination light detection optical path, the fundus simulation light emitting module and the light splitting module are used for forming a fundus simulation optical path, the fundus simulation optical path is imaged on the measured OCT device to adjust the clarity of fundus images, human eyes can be replaced to debug the OCT device, the debugging effect cannot be influenced due to human eye differences, and the debugging stability and consistency are improved.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic diagram of a debugging system of an OCT apparatus according to an embodiment of the present invention.
Icon: 001-a light splitting module; 002-illumination light detection module; 201-a first imaging objective; 202-confocal detection camera; 003-fundus analog light-emitting module; 301-a second imaging objective; 302-resolution plate; 303-infrared illumination sources; 004-measured OCT devices; 401-OCT sample arm module; 411-OCT interferometer; 412-a collimating lens; 413-two-dimensional galvanometer; 402-fundus laser SLO module; 421-SLO light source; 422-linear mirror; 423-first mirror; 424-third imaging objective; 425-SLO camera; 403-fixation target module; 431-fixation light source; 432-a lens; 433-a second mirror; 404-shared light path module; 441-a second dichroic mirror; 442-a main scan lens; 443-a third dichroic mirror; 444-ocular lens.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "physical quantity" in the formula, unless otherwise noted, is understood to mean a basic quantity of a basic unit of international system of units, or a derived quantity derived from a basic quantity by a mathematical operation such as multiplication, division, differentiation, or integration.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, an OCT apparatus auxiliary debugging apparatus provided in an embodiment of the present invention includes: a spectroscopic module 001, an illumination light detection module 002 and an eyeground simulation light-emitting module 003; the light splitting module 001 and the illumination light detection module 002 form an illumination light detection optical path for adjusting the confocal of the measured OCT equipment 004; the fundus simulation light emitting module 003 and the light splitting module 001 form a fundus simulation light path for imaging on the measured OCT device 004.
Specifically, by adjusting the measured OCT apparatus 004, the diameter of the light spot detected by the illumination light detection module 002 is minimized, thereby realizing the confocal adjustment of the OCT and SLO of the measured OCT apparatus 004. Meanwhile, light rays emitted by the fundus simulation light emitting module 003 can be imaged on the measured OCT apparatus 004. Therefore, the auxiliary debugging device of the OCT equipment can simulate human eyes, replaces the confocal detection function and the illumination reflection function of the human eyes, realizes the debugging of the OCT equipment, does not influence the debugging effect due to the difference of the human eyes, and improves the stability and the consistency of the debugging.
In the embodiment of the present invention, the light splitting module 001 employs a light splitting prism, a half-mirror or a first dichroic mirror, light from the measured OCT device 004 to the light splitting module 001 passes through the light splitting module 001 and enters the illumination light detection module 002, and light from the fundus simulation light emitting module 003 to the light splitting module 001 is reflected by the light splitting module 001 to the measured OCT device 004.
Further, the illumination light detection module 002 includes: a first imaging objective 201 and a confocal detection camera 202, wherein the first imaging objective 201 is positioned between the confocal detection camera 202 and the light splitting module 001; the OCT illumination light and SLO illumination light emitted from the measured OCT apparatus 004 pass through the spectroscopic module 001 and then are condensed on the confocal detection camera 202 through the first imaging objective lens 201. The light beam emitted from the measured OCT apparatus 004 through the light splitting module 001 into the illumination light detection module 002 is converged to the confocal detection camera 202 by the first imaging objective 201, the light beams of OCT, SLO and fixation target are detected by the confocal detection camera 202, the collimator lens 412, the third imaging objective 424 and the lens 432 are respectively adjusted until the diameter of the light beam detected by the confocal detection camera 202 reaches the minimum, and then the collimator lens 412, the third imaging objective 424 and the lens 432 are fixed, thereby completing the confocal adjustment of the OCT apparatus.
Further, the fundus analog light emitting module 003 includes: a second imaging objective 301, a resolution plate 302 and an infrared illumination light source 303; the light emitted from the infrared illumination light source 303 is irradiated on the resolution plate 302, and the light transmitted through the resolution plate 302 is incident on the measured OCT apparatus 004 through the second imaging objective 301 and the light splitting module 001. Each point of the resolution plate 302 in the field of view is sent out after being aligned by the resolution plate 302, and then passes through the ocular lens 444, the third dichroic mirror 443, the main scanning lens 442 and the second dichroic mirror 441 respectively, and then is reflected to the third imaging objective 424 by the first reflector, and finally is imaged on the SLO camera 425, and the imaging is clear by adjusting the position of the third imaging objective 424, so that the SLO imaging adjustment is completed.
Further, the wavelength of the infrared illumination source 303 is 680nm to 980nm, or the wavelength of the infrared illumination source 303 is greater than 1100nm, and the resolution board 302 can be replaced by other devices with recognizable patterns. The first imaging objective 201 and the second imaging objective 301 may each employ an aspherical lens, a cemented lens, or a lens group.
As shown in fig. 1, an OCT apparatus debugging system provided by an embodiment of the present invention includes: the measured OCT apparatus 004 and the OCT apparatus auxiliary debugging device described in the above embodiment; the measured OCT apparatus 004 includes: an OCT sample arm module 401, a fundus laser SLO module 402, a fixation target module 403 and a common optical path module 404; the light beams of the OCT sample arm module 401, the fundus laser SLO module 402, and the fixation target module 403 are respectively incident on the common optical path module 404, and are incident on the spectroscopic module 001 via the common optical path module 404.
The OCT equipment auxiliary debugging device is adopted to simulate human eye functions, confocal detection and fundus imaging detection can be performed instead of human eyes, the debugging effect cannot be influenced due to human eye difference, and the debugging consistency is improved.
In the embodiment of the present invention, the common optical path module 404 includes: a second dichroic mirror 441, a main scanning lens 442, a third dichroic mirror 443, and an eyepiece 444; the second dichroic mirror 441, the main scanning lens 442, the third dichroic mirror 443, the ocular lens 444 and the light splitting module 001 are sequentially arranged at intervals; the light from the OCT sample arm module 401 and the fundus laser SLO module 402 enters the second dichroic mirror 441, and the light from the fixation target module 403 enters the third dichroic mirror 443. The light from the second dichroic mirror 441 to the main scanning lens 442 is converged by the third dichroic mirror 443, the light converged by the third dichroic mirror 443 from the fixation target module 403 is transmitted to the eyepiece 444, and the light passes through the eyepiece 444 and enters the illumination light detection module 002 through the eyepiece 444.
Further, the OCT sample arm module 401 includes: the OCT interferometer 411, the collimating lens 412 and the two-dimensional galvanometer 413, divergent beams emitted by the OCT interferometer 411 form collimated beams after passing through the collimating lens 412, then enter an auxiliary debugging device of the OCT equipment through the two-dimensional galvanometer 413 and the common light path module 404, move between the OCT interferometer 411 and the two-dimensional galvanometer 413 by adjusting the collimating lens 412, and observe the size of a light spot on the confocal detection camera 202 until the diameter of the light spot is minimum.
Further, the fundus laser SLO module 402 includes: SLO light source 421, linear mirror 422, first reflecting mirror 423, third imaging objective 424, and SLO camera 425; the light emitted from the SLO light source 421 enters the first reflecting mirror 423 through the linear mirror 422, and the light emitted from the fundus simulation light emitting module 003 is imaged on the SLO camera 425 through the light splitting module 001, the common optical path module 404, the first reflecting mirror 423 and the third imaging objective lens 424. The size of the light spot on the confocal detection camera 202 is observed while moving between the first mirror 423 and the SLO camera 425 by adjusting the third imaging objective 424 until the light spot diameter reaches a minimum.
Further, the fixation target module 403 includes: the light emitted by the fixation light source 431 is incident into the common light path module 404 through the lens 432 and the second reflector 433. By moving the adjusting lens 432 between the fixation light source 431 and the second reflector 433, and observing the size of the light spot on the confocal detection camera 202 until the diameter of the light spot reaches the minimum, the confocal debugging of the measured OCT device 004 is realized by completing the adjustment of the fixation collimating lens 412, the third imaging objective 424 and the lens 432.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. An OCT device auxiliary debugging device is characterized by comprising: a light splitting module (001), an illumination light detection module (002) and an eyeground simulation light emitting module (003);
the light splitting module (001) and the illumination light detection module (002) form an illumination light detection optical path for adjusting the confocal of the detected OCT equipment (004);
the fundus simulation light emitting module (003) and the light splitting module (001) form a fundus simulation light path for imaging on the measured OCT equipment (004).
2. The OCT apparatus-assisted debugging device of claim 1, wherein the spectroscopy module (001) comprises a spectroscopy prism, a half-mirror, or a first dichroic mirror.
3. The OCT apparatus-assisted debugging device according to claim 1, wherein the illumination light detection module (002) comprises: a first imaging objective (201) and a confocal detection camera (202), the first imaging objective (201) being located between the confocal detection camera (202) and the spectroscopy module (001);
the OCT illumination light and the SLO illumination light emitted from the measured OCT device (004) are converged on the confocal detection camera (202) through the first imaging objective lens (201) after passing through the light splitting module (001).
4. The OCT apparatus-assisted debugging device according to claim 1, wherein the fundus simulation lighting module (003) comprises: a second imaging objective (301), a resolution plate (302) and an infrared illumination light source (303);
the light emitted by the infrared illumination light source (303) is irradiated on the resolution plate (302), and the light transmitted through the resolution plate (302) is incident into the measured OCT device (004) through the second imaging objective lens (301) and the light splitting module (001).
5. The OCT device auxiliary debugging device of claim 4, wherein the wavelength of said infrared illumination source (303) is 680nm to 980nm, or wherein the wavelength of said infrared illumination source (303) is greater than 1100nm.
6. An OCT device commissioning system, comprising: the tested OCT device (004) and the auxiliary debugging device of OCT device of any one of claims 1-5;
the measured OCT device (004) comprises: an OCT sample arm module (401), a fundus laser SLO module (402), a fixation target module (403) and a common optical path module (404);
light rays of the OCT sample arm module (401), the fundus laser SLO module (402) and the fixation target module (403) are respectively emitted into the common light path module (404) and emitted into the light splitting module (001) through the common light path module (404).
7. The OCT device debugging system of claim 6, wherein the common light path module (404) comprises: a second dichroic mirror (441), a main scanning lens (442), a third dichroic mirror (443), and an eyepiece lens (444);
the second dichroic mirror (441), the main scanning lens (442), the third dichroic mirror (443), the eyepiece (444), and the light splitting module (001) are sequentially arranged at intervals;
light from the OCT sample arm module (401) and the fundus laser SLO module (402) is incident on the second dichroic mirror (441), and light from the fixation target module (403) is incident on the third dichroic mirror (443).
8. The OCT device commissioning system of claim 6, wherein the OCT sample arm module (401) comprises: the OCT equipment auxiliary debugging device comprises an OCT interferometer (411), a collimating lens (412) and a two-dimensional galvanometer (413), wherein divergent light beams emitted by the OCT interferometer (411) form collimated light beams after passing through the collimating lens (412), and then enter the OCT equipment auxiliary debugging device through the two-dimensional galvanometer (413) and the common light path module (404).
9. The OCT device commissioning system of claim 6, wherein the fundus laser SLO module (402) comprises: an SLO light source (421), a linear mirror (422), a first reflecting mirror (423), a third imaging objective lens (424) and an SLO camera (425);
the light emitted by the SLO light source (421) enters the first reflector (423) through the linear mirror (422), and the light emitted by the fundus simulation light emitting module (003) is imaged on the SLO camera (425) through the light splitting module (001), the common light path module (404), the first reflector (423) and the third imaging objective (424).
10. The OCT device debugging system of claim 6, wherein the fixation target module (403) comprises: the light source module comprises a fixation light source (431), a lens (432) and a second reflector (433), and light emitted by the fixation light source (431) is emitted into the common light path module (404) through the lens (432) and the second reflector (433).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211423561.3A CN115721256A (en) | 2022-11-14 | 2022-11-14 | OCT equipment auxiliary debugging device and OCT equipment debugging system |
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| CN202211423561.3A CN115721256A (en) | 2022-11-14 | 2022-11-14 | OCT equipment auxiliary debugging device and OCT equipment debugging system |
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| CN115721256A true CN115721256A (en) | 2023-03-03 |
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| CN202211423561.3A Pending CN115721256A (en) | 2022-11-14 | 2022-11-14 | OCT equipment auxiliary debugging device and OCT equipment debugging system |
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