CN110025287B - Multispectral fundus imaging illumination device and multispectral fundus imaging equipment - Google Patents
Multispectral fundus imaging illumination device and multispectral fundus imaging equipment Download PDFInfo
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- CN110025287B CN110025287B CN201910259348.5A CN201910259348A CN110025287B CN 110025287 B CN110025287 B CN 110025287B CN 201910259348 A CN201910259348 A CN 201910259348A CN 110025287 B CN110025287 B CN 110025287B
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- 238000003384 imaging method Methods 0.000 title claims abstract description 56
- 238000005286 illumination Methods 0.000 title claims description 33
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/0008—Apparatus for testing the eyes; Instruments for examining the eyes provided with illuminating means
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/12—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
Abstract
The invention provides a multispectral fundus imaging lighting device and multispectral fundus imaging equipment, and relates to the technical field of lighting, wherein the multispectral fundus imaging lighting device comprises: the light source system comprises a first primary light source assembly, a second primary light source assembly, a first-stage light splitting sheet and a control circuit module, wherein the first primary light source assembly and the second primary light source assembly can emit light beams with different wavelengths; the first primary light source component can emit light beams towards the first surface of the first-stage light splitting sheet, and the light beams emitted by the first primary light source component can pass through the first-stage light splitting sheet; the first-stage light source assembly can emit light beams towards the first surface of the first-stage light splitting sheet, and the first-stage light splitting sheet can reflect the light beams emitted by the first-stage light source assembly so as to enable the light beams passing through the first-stage light splitting sheet to be combined with the light beams reflected by the first-stage light splitting sheet; the control circuit module is used for respectively controlling the on and off of the first primary light source assembly and the second primary light source assembly.
Description
Technical Field
The invention relates to the technical field of illumination, in particular to a multispectral fundus imaging illumination device and multispectral fundus imaging equipment.
Background
Retinal imaging technology is increasingly being widely used in the fields of medical and biological identification technologies, etc. In medicine, the retinopathy is detected and tracked in time, and the diagnosis and early warning effects on various diseases can be effectively achieved. In the field of biological recognition, retina has biological characteristics far more than fingerprints, palmprints and the like, so that recognition accuracy can be greatly improved; and the retina is deep into the fundus, is not easy to be acquired by the outside, and has very high confidentiality.
Retinal imaging technology has a long history of research, but still fails to meet social demands. For example, in the medical field, with the development of the internet, telemedicine systems have gradually become an integral part of medical diagnosis. The multispectral fundus layering imaging system (RHA) utilizes different monochromatic LED light sources to project to different layers of fundus (including deep retina and choroid), and a series of fundus coronal plane images are obtained through the absorption and reflection characteristics of different substances in the eye on different monochromatic lights, so that eye tissue information for more accurate diagnosis is provided for doctors.
The existing scheme of multi-spectrum LED illumination mainly comprises two implementation modes:
1. physically changing the positions of LEDs of different spectra enables sharing one optical system. For example, an existing illumination device for multispectral fundus imaging comprises a turntable, a plurality of LEDs with different wavelengths are installed on the turntable along a ring shape, and the turntable is rotated to realize that the LEDs with the selected wavelengths are connected into a fundus imaging optical path system. The photographing time is increased in a physical rotation mode, the focus point is not easy to capture, and the complexity of a mechanism is increased.
2. The LED chips with different spectrums are closely arranged on the same substrate, and a certain light-emitting spectrum is selected through an external control circuit chip. On the one hand, the optical system of the multispectral fundus camera with a specific numerical aperture can exclude incident light with a large angle from the optical system, so that the LED chips arranged on the periphery have more functional loss compared with the central LED chip. On the other hand, the limitation of pupil size requires that the incident light cross section must be controlled within a limited circular area, thus requiring that the LED chips be arranged within a small range, and thus requiring that the LED chip area of the selection must be small.
Disclosure of Invention
The invention aims to provide a multispectral fundus imaging lighting device and multispectral fundus imaging equipment, so as to solve the technical problem that the existing multispectral fundus imaging equipment is low in spectrum replacement efficiency.
Embodiments of the present invention are implemented as follows:
in a first aspect, an embodiment of the present invention provides an illumination device for multispectral fundus imaging, including: the light source system comprises a first primary light source assembly, a second primary light source assembly, a first-stage light splitting sheet and a control circuit module, wherein the first primary light source assembly and the second primary light source assembly can emit light beams with different wavelengths;
the first primary light source component can emit light beams towards the first surface of the first-stage light splitting sheet, and the light beams emitted by the first primary light source component can pass through the first-stage light splitting sheet;
the first-stage light source assembly can emit light beams towards the first surface of the first-stage light splitting sheet, and the first-stage light splitting sheet can reflect the light beams emitted by the first-stage light source assembly so as to enable the light beams passing through the first-stage light splitting sheet to be combined with the light beams reflected by the first-stage light splitting sheet;
the control circuit module is respectively and electrically connected with the first primary light source assembly and the second primary light source assembly and is used for respectively controlling the on and off of the first primary light source assembly and the second primary light source assembly.
Further, the second-stage light source assemblies and the first-stage light splitting plates are multiple in number and correspond to each other one by one.
Further, the second primary light source assembly comprises a first secondary light source assembly, a second secondary light source assembly and a secondary light splitting assembly, the first secondary light source assembly can emit light beams towards the first surface of the secondary light splitting assembly, and the light beams emitted by the first secondary light source assembly can pass through the secondary light splitting assembly;
the second secondary light source component can emit light beams towards the second surface of the secondary light splitting sheet, and the secondary light splitting sheet can reflect the light beams emitted by the second secondary light source component, so that the light beams passing through the secondary light splitting sheet and the light beams reflected by the secondary light splitting sheet can be irradiated on the second surface of the primary light splitting sheet after being combined;
the control circuit module is respectively and electrically connected with the first secondary light source assembly and the second secondary light source assembly and is used for respectively controlling the on and off of the first secondary light source assembly and the second secondary light source assembly.
Further, the number of the second-stage light source assemblies and the second-stage light splitting sheets are multiple and correspond to each other one by one.
Further, the second secondary light source assembly comprises a first tertiary light source assembly, a second tertiary light source assembly and a tertiary light splitting sheet, the first tertiary light source assembly can emit light beams towards the first surface of the tertiary light splitting sheet, and the light beams emitted by the first tertiary light source assembly can pass through the tertiary light splitting sheet;
the second three-level light source assembly can emit light beams towards the second surface of the three-level light splitting sheet, and the three-level light splitting sheet can reflect the light beams emitted by the second three-level light source assembly, so that the light beams passing through the three-level light splitting sheet and the light beams reflected by the three-level light splitting sheet can irradiate on the second surface of the two-level light splitting sheet after being combined;
the control circuit module is respectively and electrically connected with the first three-level light source assembly and the second three-level light source assembly and is used for respectively controlling the on and off of the first three-level light source assembly and the second three-level light source assembly.
Further, the first primary light source component and the second primary light source component respectively comprise a light emitting diode and a collimating lens group which are in one-to-one correspondence, and the collimating lens group is used for reducing the divergence angle of light beams emitted by the light emitting diode.
Further, the illumination device for multispectral fundus imaging comprises a conducting optical fiber bundle, wherein the end face of the first end of the conducting optical fiber bundle is used for receiving light emitted from the light source system, and the shape of the cross section of the end face of the first end of the conducting optical fiber bundle is the same as the shape of the light emitting face of the light emitting diode.
Further, the end face of the second end of the conducting fiber bundle is annular in cross section, so that the light beam emitted from the conducting fiber bundle is annular in cross section.
Further, a focusing lens group is arranged between the conducting optical fiber bundle and the light source system, so that the light emitted from the light source system passes through the focusing lens group and is converged on the end face of the first end of the conducting optical fiber bundle.
Further, the illumination device for multispectral fundus imaging comprises an adjusting lens group, the second end of the conducting optical fiber bundle faces the adjusting lens group, and the adjusting lens group is used for adjusting the diameter of the annular light beam emitted from the conducting optical fiber bundle.
In a second aspect, an embodiment of the present invention provides a spectral fundus imaging apparatus, including an imaging device and an illumination device for multispectral fundus imaging described above.
The embodiment of the invention has the following beneficial effects:
the embodiment of the invention provides a multispectral fundus imaging lighting device, which comprises: the light source system comprises a first primary light source assembly, a second primary light source assembly, a first-stage light splitting sheet and a control circuit module, wherein the first primary light source assembly and the second primary light source assembly can emit light beams with different wavelengths; the first primary light source component can emit light beams towards the first surface of the first-stage light splitting sheet, and the light beams emitted by the first primary light source component can pass through the first-stage light splitting sheet; the first-stage light source assembly can emit light beams towards the first surface of the first-stage light splitting sheet, and the first-stage light splitting sheet can reflect the light beams emitted by the first-stage light source assembly so as to enable the light beams passing through the first-stage light splitting sheet to be combined with the light beams reflected by the first-stage light splitting sheet; the control circuit module is respectively and electrically connected with the first primary light source assembly and the second primary light source assembly and is used for respectively controlling the on and off of the first primary light source assembly and the second primary light source assembly. The light beams emitted by the first-stage light source assembly and the light beams emitted by the second-stage light source assembly can be combined through the first-stage light splitting sheet. The first primary light source component can be controlled to emit light beams through the control circuit module, and the light beams emitted by the first primary light source component can irradiate the fundus of a patient after passing through the first-stage light splitting sheet and then are imaged. When the eyeground of a patient needs to be irradiated by using light beams with different wavelengths, the first primary light source assembly is only required to be turned off by the control circuit module, the second primary light source assembly is turned on, and the light beams emitted by the second primary light source assembly can also be irradiated on the eyeground of the patient after passing through the first-stage light splitting sheet. The light beams emitted by the first primary light source component and the light beams emitted by the second primary light source component are combined, when the light sources with different wavelengths are switched, the physical positions of the light sources are not changed, the time for switching different light sources is shortened, the difficulty in selecting the light sources is reduced, and the possibility of more spectrum selection is provided. Is beneficial to capturing focus points and reduces the complexity of the mechanism.
The embodiment of the invention provides a spectrum fundus imaging device which comprises an imaging device and the illumination device for multispectral fundus imaging. Since the above-described illumination device for multispectral fundus imaging has the above-described advantages, the spectral fundus imaging apparatus provided by the embodiment of the present invention also has the above-described advantages.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the related art, the drawings that are required to be used in the description of the embodiments or the related art will be briefly described, and it is apparent that the drawings in the description below are some embodiments of the present invention, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.
Fig. 1 is a schematic diagram of an illumination device for multispectral fundus imaging provided in embodiment 1 of the present invention;
fig. 2 is a schematic diagram of the light path of the light source system of the illumination device for multispectral fundus imaging provided in embodiment 1 of the present invention;
fig. 3 is a schematic diagram of a light source system of an illumination device for multispectral fundus imaging provided in embodiment 2 of the present invention;
fig. 4 is a schematic diagram of a light source system of the illumination device for multispectral fundus imaging provided in embodiment 3 of the present invention;
fig. 5 is a schematic diagram of another light source system of the illumination device for multispectral fundus imaging provided in embodiment 3 of the present invention;
fig. 6 is a schematic diagram of a light source system of an illumination device for multispectral fundus imaging provided in embodiment 4 of the present invention.
Icon: 100-a control circuit module; 200-a first primary light source assembly; 300-a second stage light source assembly; 310-a first secondary light source assembly; 320-a second stage light source assembly; 321-a first tertiary light source assembly; 322-a second tertiary light source assembly; 323-three-stage light splitting; 330-two-stage light splitting; 400-first-stage light splitting; 500-focusing lens group; 600-conducting fiber bundles; 700-adjusting the lens group; 810-a light source; 820-collimating lens group.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "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; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Some embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.
Example 1
As shown in fig. 1 and fig. 2, an illumination device for multispectral fundus imaging provided in an embodiment of the present invention includes: the light source system comprises a first primary light source assembly 200, a second primary light source assembly 300, a primary light splitting sheet 400 and a control circuit module 100, wherein the first primary light source assembly 200 and the second primary light source assembly 300 can emit light beams with different wavelengths; the first primary light source assembly 200 can emit a light beam toward the first face of the first-stage light splitting sheet 400, and the light beam emitted from the first primary light source assembly 200 can pass through the first-stage light splitting sheet 400; the second primary light source assembly 300 is capable of emitting a light beam toward the second face of the primary light splitting sheet 400, and the primary light splitting sheet 400 is capable of reflecting the light beam emitted from the second primary light source assembly 300 so that the light beam passing through the primary light splitting sheet 400 is combined with the light beam reflected by the primary light splitting sheet 400; the control circuit module 100 is electrically connected to the first primary light source assembly 200 and the second primary light source assembly 300, respectively, and is used for controlling the first primary light source assembly 200 and the second primary light source assembly 300 to be turned on and off, respectively. The light beam emitted from the first primary light source assembly 200 and the light beam emitted from the second primary light source assembly 300 can be combined by the first-stage light splitting sheet 400. The first primary light source assembly 200 can be controlled by the control circuit module 100 to emit light beams, and the light beams emitted by the first primary light source assembly 200 can irradiate the fundus of a patient after passing through the first-stage light splitting sheet 400, and then imaging is performed. When the fundus of the patient needs to be irradiated by using the light beams with different wavelengths, the first primary light source assembly 200 is only required to be turned off by the control circuit module 100, the second primary light source assembly 300 is turned on, and the light beam emitted by the second primary light source assembly 300 can also be irradiated on the fundus of the patient after passing through the first-stage light splitting sheet 400. By combining the light beam emitted from the first primary light source assembly 200 and the light beam emitted from the second primary light source assembly 300, when the light sources 810 with different wavelengths are switched, the physical positions of the light sources 810 are not changed, and the switching time of the different light sources 810 is shortened. Is beneficial to capturing focus points and reduces the complexity of the mechanism.
The light source can be an LED, the difficulty in selecting the LED can be reduced through the structure, an LED chip can be adopted, the LED can be divided, and the possibility of more spectrum selection is provided.
At least two light sources 810 are included in the light source system, and the wavelengths of the light beams emitted by the two light sources 810 are different. Light emitted by the light source 810 can be transmitted or reflected after passing through the light splitting sheet, so that the light path is changed, and finally, all light beams emitted by the light source 810 can be combined.
The control circuit module 100 may include a circuit board, and switches corresponding to the light sources 810 one by one may be disposed on the circuit board, and the light sources 810 are controlled to be turned on or off by the switches. A timer corresponding to the switch may also be disposed on the circuit board, where the timer is in the prior art, and by setting a preset time, the light source 810 may be turned on or off after the preset time arrives.
The beam splitter can transmit light beams in a certain wavelength range and reflect light beams in a certain wavelength range through film coating treatment, and the technology belongs to the prior art.
In this embodiment, a light source is disposed in the first primary light source assembly 200, a light source is also disposed in the second primary light source assembly 300, the wavelengths of the two light sources are inconsistent, and the two light sources are connected to the control circuit module 100, and the corresponding light sources are turned on or off according to the needs of the user, so that the light with the required wavelength can be emitted from the light source system.
The first primary light source assembly 200 and the second primary light source assembly 300 each include a light emitting diode and a collimating lens group 820 in one-to-one correspondence, and the light beam emitted from the light source needs to pass through the collimating lens group 820 before being directed to the first-stage light splitting sheet 400 in the first primary light source assembly 200 or the second primary light source assembly 300, and the collimating lens group 820 may be composed of a plurality of conventional optical lenses, and the collimating lens group 820 is used for reducing the divergence angle of the light beam emitted from the light emitting diode, so that the above functions are achieved by using the lenses in the prior art.
The illumination device for multispectral fundus imaging comprises a conducting fiber bundle 600, wherein the end face of the first end of the conducting fiber bundle 600 is used for receiving light emitted from a light source system, and the cross section of the end face of the first end of the conducting fiber bundle 600 is the same as the shape of the light emitting face of the light emitting diode. Light emitted from the light source system is taken into the guide fiber bundle 600, passes through the guide fiber bundle 600, and irradiates the fundus. In order to make the conducting fiber bundle 600 able to receive the light emitted from the light source system to the maximum extent, in this embodiment, the shape of the cross section of the end face of the first end of the conducting fiber bundle 600 is set to be the same as the shape of the light emitting surface of the light emitting diode, for example, the light source is an LED, the light emitting surface thereof is rectangular, and the shape of the cross section of the end face of the first end of the conducting fiber bundle 600 is also rectangular; if the light emitting surface of the LED is circular, the cross-section of the end surface of the first end of the conducting fiber bundle 600 is also circular, so that the coupling efficiency of the fiber bundle and the light beam from the light source system is improved.
The end face of the second end of the conducting fiber bundle 600 has a circular cross section so that the light beam emitted from the conducting fiber bundle 600 has a circular cross section. The light emitted from the conductive fiber bundle 600 is in a ring shape, the middle is matt to avoid the cornea, and the ring light is injected into the fundus from the periphery of the cornea to avoid the reflection of the cornea.
A focusing lens group 500 is disposed between the conductive optical fiber bundle 600 and the light source system so that light emitted from the light source system is converged on an end surface of the first end of the conductive optical fiber bundle 600 after passing through the focusing lens group 500. The focusing lens group 500 may be composed of a plurality of lenses, and it is known to perform the above functions by means of a lens combination.
The illumination device for multispectral fundus imaging includes an adjustment lens set 700, the second end of the conducting fiber bundle 600 facing the adjustment lens set 700, the adjustment lens set 700 for adjusting the diameter of the annular light beam emitted from the conducting fiber bundle 600. The adjusting lens assembly 700 may be composed of a plurality of lens arrangements, and the above-mentioned functions may be implemented by adjusting parameters of the selected lenses and distances between the lenses, which is implemented as in the prior art.
Example 2
As shown in fig. 3, the difference from embodiment 1 is that the number of the second-stage light source modules 300 and the first-stage light splitting sheets 400 is plural and corresponds to one. In the present embodiment, the number of the second-stage light source modules 300 and the number of the first-stage light splitting sheets 400 are two, but the number of the second-stage light source modules and the first-stage light splitting sheets is not limited to two, and three, four or more light sources can be used, so that the types of light sources with different wavelengths can be increased.
The two primary light splitting sheets 400 are disposed in parallel and at intervals along the path of the light beam emitted from the first primary light source assembly 200. And the first primary light source assembly 200 and the two second primary light source assemblies 300 are respectively provided with a light source, and the three light sources can be combined through the light path arrangement. The control circuit module 100 controls the on or off of the three light sources, respectively.
The wavelengths of the light sources within the two second stage light source modules 300 may be the same or different. For example, the light beams emitted by the light sources in the first primary light source assembly 200 are red light, and the colors of the light beams emitted by the light sources in the two second primary light source assemblies 300 can be green light and yellow light, respectively, so that the device can emit light beams with three different wavelengths. The light beams emitted by the light sources in the first primary light source assembly 200 can be red light, the colors of the light beams emitted by the light sources in the two second primary light source assemblies 300 can be red light and yellow light respectively, when red light irradiation is needed, the two red light sources can be turned on, and the light intensity can be increased after the two light beams are combined.
The control circuit module 100 is electrically connected to the light sources in each light source assembly, respectively, for controlling the turning on and off of the light sources.
Example 3
As shown in fig. 4, unlike embodiment 1 and embodiment 2, the second primary light source assembly 300 includes a first secondary light source assembly 310, a second secondary light source assembly 320, and a secondary light splitter 330, the first secondary light source assembly 310 being capable of emitting a light beam toward a first side of the secondary light splitter 330, the light beam emitted from the first secondary light source assembly 310 being capable of passing through the secondary light splitter 330; the second secondary light source assembly 320 can emit a light beam toward the second surface of the secondary light splitting sheet 330, and the secondary light splitting sheet 330 can reflect the light beam emitted from the second secondary light source assembly 320, so that the light beam passing through the secondary light splitting sheet 330 and the light beam reflected by the secondary light splitting sheet 330 can be irradiated on the second surface of the primary light splitting sheet 400 after being combined. The control circuit module 100 is electrically connected to the first secondary light source assembly 310 and the second secondary light source assembly 320, respectively, and is used for controlling the first secondary light source assembly 310 and the second secondary light source assembly 320 to be turned on and off, respectively. The light source assembly can be increased by arranging the secondary beam splitter 330, so that the number of light sources in the system is increased, and the light beams finally emitted from the light source system of the increased light sources are subjected to beam combination treatment.
As shown in fig. 5, the number of the second secondary light source modules 320 and the number of the secondary light splitting modules 330 are all plural and correspond to each other one by one. The same arrangement as in embodiment 2 can increase the number of light sources, and thus the variety of light sources of different wavelengths.
The control circuit module 100 is electrically connected to the light sources in each light source assembly, respectively, for controlling the turning on and off of the light sources.
Example 4
As shown in fig. 6, unlike embodiment 3, the second secondary light source module 320 includes a first tertiary light source module 321, a second tertiary light source module 322, and a tertiary light splitting sheet 323, the first tertiary light source module 321 being capable of emitting a light beam toward a first face of the tertiary light splitting sheet 323, the light beam emitted from the first tertiary light source module 321 being capable of passing through the tertiary light splitting sheet 323; the second tertiary light source assembly 322 can emit a light beam toward the second face of the tertiary light splitting sheet 323, and the tertiary light splitting sheet 323 can reflect the light beam emitted by the second tertiary light source assembly 322, so that the light beam passing through the tertiary light splitting sheet 323 and the light beam reflected by the tertiary light splitting sheet 323 can be irradiated on the second face of the secondary light splitting sheet 330 after being combined; the control circuit module 100 is electrically connected to the first tertiary light source assembly 321 and the second tertiary light source assembly 322, respectively, and is used for controlling the first tertiary light source assembly 321 and the second tertiary light source assembly 322 to be turned on and off, respectively. Similarly, the light source assembly may include a plurality of secondary light source assemblies, and the plurality of light source assemblies are combined through the beam splitting sheet beam combining function. The control circuit module 100 is used for realizing the starting of one or more light sources with the same wavelength, illuminating the bottom of the eye, and when the light beams with different wavelengths are switched, the physical position of the light source is not changed, so that the time for switching the light beams is saved.
The control circuit module 100 is electrically connected to the light sources in each light source assembly, respectively, for controlling the turning on and off of the light sources.
In summary, the light path of more light sources expanded by the light path principle is also a protection range.
The embodiment of the invention provides a spectrum fundus imaging device which comprises an imaging device and the illumination device for multispectral fundus imaging. Since the above-described illumination device for multispectral fundus imaging has the above-described advantages, the spectral fundus imaging apparatus provided by the embodiment of the present invention also has the above-described advantages.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A multi-spectral fundus imaging illumination apparatus, comprising: the light source system comprises a first primary light source assembly, a second primary light source assembly, a first-stage light splitting sheet and a control circuit module, wherein the first primary light source assembly and the second primary light source assembly can emit light beams with different wavelengths;
the first primary light source component can emit light beams towards the first surface of the first-stage light splitting sheet, and the light beams emitted by the first primary light source component can pass through the first-stage light splitting sheet;
the first primary light source assembly is capable of emitting a light beam towards the first face of the primary light splitting sheet, and the primary light splitting sheet is capable of reflecting the light beam emitted by the first primary light source assembly to combine the light beam passing through the primary light splitting sheet with the light beam reflected by the primary light splitting sheet;
the control circuit module is respectively and electrically connected with the first primary light source assembly and the second primary light source assembly and is used for respectively controlling the first primary light source assembly and the second primary light source assembly to be turned on and turned off;
the second primary light source assembly comprises a first secondary light source assembly, a second secondary light source assembly and a secondary light splitting sheet, the first secondary light source assembly can emit light beams towards the first surface of the secondary light splitting sheet, and the light beams emitted by the first secondary light source assembly can pass through the secondary light splitting sheet;
the second secondary light source assembly can emit light beams towards the second surface of the secondary light splitting sheet, and the secondary light splitting sheet can reflect the light beams emitted by the second secondary light source assembly, so that the light beams passing through the secondary light splitting sheet and the light beams reflected by the secondary light splitting sheet can be irradiated on the second surface of the secondary light splitting sheet after being combined;
the control circuit module is respectively and electrically connected with the first secondary light source assembly and the second secondary light source assembly and is used for respectively controlling the on and off of the first secondary light source assembly and the second secondary light source assembly;
the number of the second-stage light source assemblies and the number of the second-stage light splitting plates are multiple and are in one-to-one correspondence;
the second secondary light source assembly comprises a first tertiary light source assembly, a second tertiary light source assembly and a tertiary light splitting sheet, the first tertiary light source assembly can emit light beams towards the first surface of the tertiary light splitting sheet, and the light beams emitted by the first tertiary light source assembly can pass through the tertiary light splitting sheet;
the second three-stage light source assembly can emit light beams towards the second surface of the three-stage light splitting sheet, and the three-stage light splitting sheet can reflect the light beams emitted by the second three-stage light source assembly so that the light beams passing through the three-stage light splitting sheet and the light beams reflected by the three-stage light splitting sheet can irradiate on the second surface of the two-stage light splitting sheet after being combined;
the control circuit module is respectively and electrically connected with the first three-level light source assembly and the second three-level light source assembly and is used for respectively controlling the on and off of the first three-level light source assembly and the second three-level light source assembly.
2. The illumination device for multispectral fundus imaging of claim 1, wherein the number of the second primary light source components and the first primary light splitting components is plural and corresponds to one.
3. The illumination device for multispectral fundus imaging of claim 1, wherein the first primary light source assembly and the second primary light source assembly each comprise a light emitting diode and a collimating lens group in one-to-one correspondence, and the collimating lens group is used for reducing the divergence angle of the light beam emitted by the light emitting diode.
4. A multispectral fundus imaging illumination device according to claim 3, wherein the multispectral fundus imaging illumination device comprises a conductive fiber bundle, an end face of a first end of the conductive fiber bundle is configured to receive light emitted from the light source system, and a cross-sectional shape of the end face of the first end of the conductive fiber bundle is the same as a shape of a light emitting face of the light emitting diode.
5. A multi-spectral fundus imaging illumination device according to claim 4, wherein the second end of the conducting fiber bundle is annular in cross-section such that the beam emerging from the conducting fiber bundle is annular in cross-section.
6. A multispectral fundus imaging illumination device according to claim 4, wherein a focusing lens group is disposed between the conductive optical fiber bundle and the light source system, such that light emitted from the light source system passes through the focusing lens group and is focused on an end face of the first end of the conductive optical fiber bundle.
7. A multispectral fundus imaging illumination device according to claim 6, wherein the multispectral fundus imaging illumination device comprises an adjustment lens set towards which the second end of the conductive fiber bundle is directed, the adjustment lens set being for adjusting the diameter of the annular beam exiting the conductive fiber bundle.
8. A spectroscopic fundus imaging apparatus comprising imaging means and illumination means for multispectral fundus imaging as claimed in any one of claims 1 to 7.
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| CN108324242A (en) * | 2017-12-28 | 2018-07-27 | 东北大学 | A kind of multispectral fundus imaging device and method based on intelligent terminal |
| CN108392173A (en) * | 2018-03-07 | 2018-08-14 | 中国科学院苏州生物医学工程技术研究所 | Multispectral fundus imaging equipment |
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| CN210144633U (en) * | 2019-04-02 | 2020-03-17 | 深圳盛达同泽科技有限公司 | Multispectral fundus imaging lighting device and multispectral fundus imaging equipment |
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| CN108324242A (en) * | 2017-12-28 | 2018-07-27 | 东北大学 | A kind of multispectral fundus imaging device and method based on intelligent terminal |
| CN108392173A (en) * | 2018-03-07 | 2018-08-14 | 中国科学院苏州生物医学工程技术研究所 | Multispectral fundus imaging equipment |
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