CN106526874B - Optical coupling device, light source system and endoscope system - Google Patents
Optical coupling device, light source system and endoscope system Download PDFInfo
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- CN106526874B CN106526874B CN201611129836.7A CN201611129836A CN106526874B CN 106526874 B CN106526874 B CN 106526874B CN 201611129836 A CN201611129836 A CN 201611129836A CN 106526874 B CN106526874 B CN 106526874B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/14—Beam splitting or combining systems operating by reflection only
- G02B27/144—Beam splitting or combining systems operating by reflection only using partially transparent surfaces without spectral selectivity
Abstract
The invention relates to the field of illumination and discloses an optical coupling device, a light source system and an endoscope system, wherein the optical coupling device comprises a substrate, a through hole is formed in the substrate, and a reflecting structure is arranged around the through hole, wherein the through hole can be used for a light beam to penetrate through the substrate, and the reflecting structure can reflect the light beam. The invention ensures that the light beam does not have any attenuation when passing through the optical coupling device, the transmissivity can be improved to 100 percent relative to the coupling device in the prior art, and the step of arranging the anti-reflection coating on the incident surface and the emergent surface of the substrate can be omitted, thereby simplifying the process and reducing the cost; in addition, the optical coupling device does not need a special fixture to shield the transmission structure when the reflective film is coated, so that the cost is further reduced, the generation of a coating transition area can be avoided, and the accuracy of the sizes of the transmission structure and the reflective structure is ensured.
Description
Technical Field
The invention relates to the field of illumination, in particular to a coupling device for coupling two or more light beams and a light source system applying the coupling device, and also relates to the field of medical equipment, in particular to an endoscope system applying the light source system.
Background
In an illumination light source system requiring coupling of two or more light beams, a common coupling component includes a half-transmitting half mirror, for example, two orthogonal light beams are placed at an intersection of the light beams, where a first light beam is transmitted through the half-transmitting half mirror, and a second light beam is reflected by the half-transmitting half mirror, and is optically coupled with the first light beam after changing directions, and due to characteristics of the half-transmitting half mirror, both light beams can be transmitted and reflected at a lens, and for the first light beam, a reflection portion cannot be utilized, and for the second light beam, a transmission portion cannot be utilized, so that at least half of the light power of each light beam involved in coupling is lost, and therefore, in an application occasion requiring a high light power for illuminating light source, it is often difficult to obtain an optimal illumination effect by using a scheme of coupling by using the half-transmitting half mirror.
Based on this, there is a coupling device at present, which includes a transmissive structure capable of transmitting light, and a reflective structure located in the center of the transmissive structure, and the coupling device is also placed at the intersection of two orthogonal beams, where the first beam is transmitted through the coupling device by the transmissive structure, and the second beam is reflected by the reflective structure, and is optically coupled to the first beam after changing the direction, and this solution can solve the problem that the semi-transmissive half mirror solution is prone to losing optical power, however, it has the same drawbacks: in the actual production process of the coupling device, in order to process the reflective structure with a limited size and shape, a processor first makes a corresponding fixture to shield the transmissive structure, and then coats the reflective film on the exposed area in the center of the transmissive structure. Due to limitations of the plating process, the contact portion of the jig with the transmissive structure inevitably has a plating transition region. According to the different control capability of each manufacturer process, the size of the coating transition area drifts between 0.3mm and 1mm, and the size accuracy of the reflecting structure can be changed in the coating transition area no matter the size of the coating transition area, so that the reflecting efficiency of the reflecting structure is influenced, and the light transmission efficiency of the transmitting structure is also influenced.
In addition, due to the reflection effect, the light beam inevitably generates power loss when penetrating the transmission structure, and the transmittance is generally 92%, and although the transmittance can be improved by arranging an anti-reflection coating on the incident surface and the emergent surface of the transmission structure, the arrangement of the anti-reflection coating causes the complexity of the process and the cost to be increased significantly.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides an optical coupling device, which solves the problems of complex manufacturing process, high cost and existence of a coating transition area of the existing coupling device.
The invention also provides a light source system and an endoscope system applying the optical coupling device.
The technical scheme adopted for solving the technical problems is as follows:
an optical coupling device comprises a substrate, a through hole and a reflecting structure, wherein the through hole is formed on the substrate, the reflecting structure is arranged around the through hole, the through hole can be used for enabling a light beam to penetrate through the substrate, and the reflecting structure can reflect the light beam.
As a further improvement of the above, the reflective structure includes a reflective film layer covering the substrate.
As a further improvement mode of the scheme, the reflectivity of the reflecting film layer at the wave band of 400nm-700nm is more than 99%.
As a further improvement of the above solution, the through hole is located in the center of the reflecting structure.
As a further improvement of the above, the shape of the through hole includes a rectangular shape, a circular shape, or an elliptical shape.
As a further improvement of the above, a light-transmitting member is included.
As a further improvement of the above scheme, the ratio of the area of the through hole to the area of the substrate satisfies: when the light beam is reflected by the reflecting structure, the reduction ratio of the luminous flux caused by the through hole is not more than 30%.
The light source system comprises a first light source module, a second light source module and the light coupling device, wherein the light coupling device is arranged at the intersection of the light beams emitted by the first light source module and the second light source module, the first light beam emitted by the first light source module passes through the light coupling device from the through hole, and the second light beam emitted by the second light source module is reflected by the reflecting structure and then emitted along the advancing direction of the first light beam so as to form a coupling light beam with the first light beam.
As a further development of the above, the angle between the light coupling means and the first light beam is 30 ° -60 °.
As a further improvement of the above solution, the first light beam is orthogonal to the second light beam, and an angle between the optical coupling device and the first light beam is 45 °.
As a further improvement mode of the scheme, the first light source module comprises a laser diode, a first collimating lens, a first converging lens, a speckle eliminating module and a second collimating lens, wherein the first collimating lens, the first converging lens, the speckle eliminating module and the second collimating lens are sequentially arranged on a light path of the laser diode.
As a further improvement of the above solution, the first light source module includes a plurality of laser diodes and corresponding first collimating lenses, wherein at least one of the plurality of laser diodes includes a red laser diode, a green laser diode and a blue laser diode, and the light beams emitted by the laser diodes are combined into a parallel light beam.
As a further improvement of the above-mentioned scheme, the wavelength of the red laser light emitted from the red laser diode is 630-670nm, the wavelength of the green laser light emitted from the green laser diode is 510-550nm, and the wavelength of the blue laser light emitted from the Lan Guangji diode is 430-470nm.
As a further improvement of the above solution, the first light source module includes an LED and a collimator lens disposed on an optical path of the LED.
As a further improvement of the above solution, the second light source module includes a white LED and a third collimating lens disposed on an optical path of the white LED.
The further improvement mode of the scheme comprises a third light source module and a secondary light coupling device, wherein the secondary light coupling device is arranged at the intersection of a third light beam emitted by the third light source module and the coupling light beam, the coupling light beam penetrates through the secondary light coupling device, and the third light beam is emitted along the advancing direction of the coupling light beam after being reflected by the secondary light coupling device so as to be coupled with the coupling light beam.
As a further improvement of the above solution, the third light source module includes a blue-violet LED and a fourth collimating lens disposed on the light path of the blue-violet LED.
As a further improvement of the above, the secondary optical coupling device includes a secondary substrate and a transmissive/reflective film layer covering the secondary substrate, the parameters of the transmissive/reflective film layer satisfying: the reflectivity of the film layer is more than 99% in the wave band of 390nm-420 nm; the transmittance is more than 95% in the wave band of 440nm-700 nm.
As a further improvement of the above solution, the secondary optical coupling device includes a secondary substrate, and a through hole on the secondary substrate, and a reflective film layer disposed around the through hole, where the through hole is used for the coupling light beam to penetrate the secondary substrate, and the reflective structure can reflect the third light beam.
As a further improvement of the above solution, the third light beam is orthogonal to the coupled light beam, and the angle between the secondary light coupling means and the coupled light beam is 45 °.
As a further improvement mode of the scheme, the optical fiber comprises a second converging lens and a light homogenizing rod, wherein a light inlet of the light homogenizing rod is arranged at a focus of the second converging lens, and the coupled light beam enters the light homogenizing rod after being converged by the second converging lens.
An endoscope system comprising the above-described light source system.
The beneficial effects of the invention are as follows:
the light beam can not be attenuated when passing through the optical coupling device, the transmissivity can be improved to 100 percent relative to the coupling device in the prior art, and the step of arranging the anti-reflection coating on the incident surface and the emergent surface of the substrate can be omitted, so that the process can be simplified, and the cost can be reduced; in addition, the optical coupling device does not need a special fixture to shield the transmission structure when the reflective film is coated, so that the cost is further reduced, the generation of a coating transition area can be avoided, and the accuracy of the sizes of the transmission structure and the reflective structure is ensured.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a front view of a first embodiment of an optical coupling device of the present invention;
FIG. 2 is a cross-sectional view of a first embodiment of an optical coupling device of the present invention;
FIG. 3 is a cross-sectional view of a second embodiment of an optical coupling device of the present invention;
FIG. 4 is a schematic diagram of the system components of a first embodiment of the light source system of the present invention;
FIG. 5 is a schematic diagram of the system components of a second embodiment of the light source system of the present invention;
FIG. 6 is a schematic diagram of the system components of a third embodiment of the light source system of the present invention;
FIG. 7 is a schematic diagram of the system components of a fourth embodiment of the light source system of the present invention;
FIG. 8 is a schematic diagram of the system components of a fifth embodiment of the light source system of the present invention;
fig. 9 is a schematic diagram showing the system composition of a sixth embodiment of the light source system of the present invention.
Detailed Description
The conception, specific structure, and technical effects produced by the present invention will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, aspects, and effects of the present invention. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.
It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly or indirectly fixed or connected to the other feature. Further, the descriptions of the upper, lower, left, right, etc. used in the present invention are merely with respect to the mutual positional relationship of the constituent elements of the present invention in the drawings.
Furthermore, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the description presented herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any combination of one or more of the associated listed items.
Referring to fig. 1 and 2, which are respectively a front view and a cross-sectional view of a first embodiment of the optical coupling device of the present invention, the optical coupling device includes a substrate 101, a through hole 102 formed in the substrate 101, and a reflective structure 103 disposed around the through hole 102. The light beam can penetrate the substrate 101 from the through hole 102, the reflecting structure 103 can reflect the light beam, and due to the existence of the through hole, the light beam cannot be attenuated when passing through the optical coupling device, the transmissivity can be improved to 100% compared with the coupling device in the prior art, and meanwhile, the step of arranging an anti-reflection coating on the incident surface and the emergent surface of the substrate can be omitted, so that the process can be simplified, and the cost can be reduced; in addition, the optical coupling device does not need a special fixture to shield the transmission structure when the reflective film is coated, so that the cost is further reduced, the generation of a coating transition area can be avoided, and the accuracy of the sizes of the transmission structure and the reflective structure is ensured.
In this embodiment, the reflective structure 103 includes a reflective film layer covering the substrate 101, and the reflective film layer may be connected to the substrate by any known process, which is not limited herein.
Further, the parameters of the reflective film layer in this embodiment preferably have certain requirements: the reflectivity of the film layer in the wave band of 400nm-700nm is more than 99%, namely the transmissivity of the optical coupling device reaches 100%, and the reflectivity reaches 99%.
In this embodiment, the through hole 102 is located at the center of the reflecting structure 103, so that the light beam transmitted through the optical coupling device is located at the center of the light beam reflected by the reflecting structure. The invention is not limited to the shape of the through-hole 102, and may be a common geometric shape, such as rectangular, circular, oval, etc., and rectangular through-holes are preferred in this embodiment.
In addition, the ratio of the area of the through hole 102 to the area of the substrate 101 is preferably set to have a certain requirement: the reduction of the luminous flux caused by the through-holes should be no more than 30% when the light beam is reflected by the reflecting structure, as a preferred embodiment of the relevant dimensions of the light coupling means, its external dimensions being 70mm by 70mm and the through-holes being 22mm by 25mm.
Referring to fig. 3, a cross-sectional view of a second embodiment of the optical coupling device according to the present invention is shown, which is different from the first embodiment in that a transparent member 104 is embedded in the through hole 102, the transparent member 104 may be made of any known transparent material, an anti-reflection coating may be disposed on one or both surfaces of the transparent member to improve transmittance, the transparent member 104 may make the optical coupling device have no visible through hole from the appearance, and although the production process and cost control are affected to some extent, at least the occurrence of a coating transition region may be avoided, such as plating a reflective film on the surface of the substrate, and embedding the transparent member in the through hole after the coating is completed.
The invention also discloses a light source system, referring to fig. 4, which shows a schematic system composition of the first embodiment of the light source system, wherein a dashed box represents a light source module. The broken lines with arrows indicate the light beam, the arrow direction indicates the advancing direction of the light beam, and the shapes and dimensions of the respective components in the drawings are merely schematic, and do not represent actual shapes and dimensions, as follows. As shown in the drawing, the light source system includes the first light source module 200, the second light source module 300 and the above-mentioned light coupling device 100, and as a preferred embodiment of the relative positional relationship among the light coupling device, the first light source module and the second light source module, in this embodiment, the first light beam emitted from the first light source module 200 is orthogonal to the second light beam emitted from the second light source module, and the included angle between the light coupling device 100 and the first light beam is 45 °, so that the first light beam can be emitted from the through hole of the light coupling device 100, and the second light beam can be emitted along the advancing direction of the first light beam after being reflected by the reflecting structure, so as to form a coupled light beam with the first light beam.
The optical coupling device is arranged at the intersection of the light beams emitted by the first light source module and the second light source module, wherein the first light beam emitted by the first light source module passes through the optical coupling device from the through hole, and the second light beam emitted by the second light source module is reflected by the reflecting structure and then emitted along the advancing direction of the first light beam so as to form a coupling light beam with the first light beam.
In addition to the above embodiments, the angle between the optical coupling device 100 and the first light beam may be adjusted within the range of 30 ° -60 °, and the angle between the first light beam and the second light beam needs to be correspondingly adjusted, so as to ensure that the second light beam is coupled with the first light beam after being reflected.
Specifically, the first light source module 200 is a laser light source, and includes a laser diode 201, and a first collimating lens 202, a first converging lens 203, a speckle dissipating module 204, and a second collimating lens 205 sequentially disposed on an optical path of the laser diode 201, wherein divergent light emitted by the laser diode 201 is changed into collimated light through the first collimating lens 202, the collimated light is converged through the first converging lens 203, then enters the speckle dissipating module 204 to perform incoherent processing, and the incoherent light processed by the speckle dissipating module 204 is collimated by the second collimating lens 205 to participate in subsequent beam coupling.
Preferably, the speckle removing module 204 may perform decoherence by using a rotary diffuser or a vibratory diffuser, wherein the diffuser has a scattering angle of greater than 5 ° and a rotation speed of 400 rpm or more. In addition, the first collimating lens 202 in the present embodiment is preferably an aspherical collimating lens.
The lens (including but not limited to converging lens and collimating lens) in this embodiment may be any lens structure known as required, or may be replaced by an optical member known to achieve the same purpose, as follows.
The second light source module 300 includes a white LED301 and a third collimating lens 302 disposed on the light path of the white LED301, and the initial luminous flux of the white LED301 is preferably greater than 800 lumens. Similarly, the divergent light emitted from the white LED301 is changed into collimated light through the third collimator lens 302, and then coupled with the first light beam.
In addition, the light source system further includes a second converging lens 400 and a light homogenizing rod 500, where the light inlet of the light homogenizing rod 500 is disposed at the focal point of the second converging lens 400, the first light beam and the second light beam are converged by the second converging lens 400 after being coupled, and then the first light beam and the second light beam are led into a subsequent illumination fiber bundle (not shown) by the light homogenizing rod 500 for illumination, where the clear aperture of the light homogenizing rod 500 is equal to or slightly smaller than the clear aperture of the illumination fiber bundle, so as to ensure efficient transmission of the light beams.
Referring to fig. 5, a schematic system of a second embodiment of a light source system is shown, which is different from the first embodiment in that the first light source module 200 includes a plurality of laser diodes 201 and corresponding first collimating lenses 202, and further, the plurality of laser diodes includes at least one red laser diode, one green laser diode and one blue laser diode, and each laser diode can independently adjust brightness. The embodiment specifically comprises a red light laser diode, a green light laser diode and a blue light laser diode.
Preferably, the wavelength of the red laser emitted by the red laser diode is 630-670nm, and the total initial power is 0.7-1.4W; the wavelength of the green laser emitted by the green laser diode is 510-550nm, and the total initial power is 0.6-1.6W; the wavelength of the blue laser emitted by the blue laser diode is 430-470nm, and the total initial power is 0.2-1.6W.
In order to achieve coupling of multiple lasers, the present embodiment further includes a plurality of dichroic light-combining sheets 206, where the dichroic light-combining sheets 206 are disposed corresponding to each laser diode to combine the light beams emitted by each laser diode into a parallel light beam, and the parallel light beams after being combined sequentially pass through the first converging lens 203, the speckle removing module 204, and the second collimating lens 205.
The invention does not limit the types and compositions of the light source modules (including the third light source module described below), and each light source module can be replaced and adjusted according to the needs, referring to fig. 6, a schematic diagram of the system composition of the third embodiment of the light source system is shown, in which the first light source module includes an LED207 and a collimator lens 208 disposed on the light path of the LED207, and of course, the LED may also adopt a combination of red light, green light and blue light LEDs as in the second embodiment, and the light beams emitted by each LED are coupled in any known manner.
Referring to fig. 7, a schematic diagram of a system composition of a fourth embodiment of a light source system is shown, which is different from the first embodiment in that the system further comprises a third light source module 600 and a secondary optical coupling device 700, wherein the third light source module 600 is disposed between the second light source module 300 and the second converging lens 400, a third light beam emitted by the third light source module is orthogonal to a coupled light beam after coupling the first and second light beams, the secondary optical coupling device 700 is disposed at an intersection of the third light beam and the coupled light beam, and an included angle between the second light beam and the coupled light beam is 45 °, so that the coupled light beam penetrates the secondary optical coupling device 700, and the third light beam is reflected by the secondary optical coupling device 700 and then is emitted along a forward direction of the coupled light beam to be coupled with the coupled light beam. Of course, the angle between the third beam and the coupled beam may also be adjusted in the range of 30 ° -60 °.
Preferably, the third light source module 600 includes a blue-violet LED601 and a fourth collimating lens 602 disposed on an optical path of the blue-violet LED601, in this embodiment, a spectrum band range of the blue-violet LED601 is 390-430 nm, divergent light emitted by the blue-violet LED601 is changed into collimated light through the fourth collimating lens 602, and then participates in subsequent light beam coupling, and the blue-violet LED601 may be replaced by a blue-violet laser diode.
The blue-violet LED module has the following functions:
(1) The spectrum band range of the blue-violet light LED is 390-430 nm, the defect that the spectrum light power of the white light LED is insufficient in the band range can be well overcome, and the white light generated by mixing the blue-violet light LED and the white light LED according to a certain light power ratio has wider spectrum coverage range, so that the illumination light source has higher color rendering index.
(2) The spectrum band range of the blue-violet light LED covers the maximum spectrum absorption band of the hemoglobin, so that the blue-violet light LED and the white light LED are mixed to generate an illumination light source in a mode that the light power of the blue-violet light LED is higher than that of the white light LED, and the light source can highlight a shallow blood vessel while the brightness of an image is kept, thereby improving the disease detection rate.
The secondary optical coupling device 700 in this embodiment may allow light in a partial wavelength band to pass therethrough and reflect light in another partial wavelength band, and specifically, the secondary optical coupling device includes a secondary substrate and a transmissive/reflective film layer covering the secondary substrate, and the film layer reflectivity is greater than 99% in the 390nm-420nm wavelength band; the transmissivity is larger than 95% in the wave band of 440nm-700nm, so that the coupling of the first, second and third light beams can be realized only by the wave band of 440nm-700nm and the wave band of 390nm-420nm of the third light beam.
Referring to fig. 8, a schematic system of a fifth embodiment of a light source system is shown, which is similar to the structure of the secondary optical coupling device 700 in the third embodiment, that is, the secondary optical coupling device 700 in this embodiment is similar to the structure of the optical coupling device 100, that is, includes a secondary substrate having a through hole and a reflective film layer disposed around the through hole, where the dimensions of the secondary substrate and the through hole thereon are enlarged with respect to those of the substrate and the through hole thereon, so as to ensure that the coupled light beams after coupling the first and second light beams can penetrate the secondary substrate from the through hole on the secondary substrate, and the reflective structure is used to reflect the third light beam, so that the coupling of the first, second and third light beams can be achieved as well.
Referring to fig. 9, a schematic system diagram of a sixth embodiment of a light source system is shown, and this embodiment is a preferred embodiment of the light source system, which includes a first light source module 200, a second light source module 300 and a third light source module 600, wherein the first light source module 200, the second light source module 300 are the same as the first light source module 200, the second light source module 300 in the second embodiment, the third light source module 600 is the same as the third light source module 600 in the third embodiment, and the working modes of this embodiment are as follows:
(1) Basic illumination mode: simultaneously, a white light LED light source and a blue-violet light LED light source are started, and high-brightness and high-color rendering index images are provided through a certain proportion.
(2) Enhanced illumination mode: simultaneously, a white light LED light source, a blue-violet light LED light source and a multi-wavelength laser light source (one or a plurality of the light sources are combined), and the vascular morphology with different depths can be highlighted while providing a high-brightness image through a certain proportion.
(3) Pure laser mode: meanwhile, the blue-violet light LED light source and the multi-wavelength laser light source (one or a plurality of the light sources are combined) are turned on, and the blood vessel morphology with different depths can be highlighted while the high-contrast image is provided through a certain proportion.
The invention also discloses an endoscope system applying the light source system.
While the preferred embodiment of the present invention has been described in detail, the present invention is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are included in the scope of the present invention as defined in the appended claims.
Claims (15)
1. A light source system for an endoscope system, comprising
The optical coupling device comprises a substrate, a through hole and a reflecting structure, wherein the through hole is formed in the substrate, the reflecting structure is arranged around the through hole, the through hole can be used for allowing a light beam to penetrate through the substrate, and the reflecting structure can reflect the light beam;
the first light source module comprises a plurality of laser diodes and corresponding first collimating lenses, wherein the plurality of laser diodes at least comprise a red light laser diode, a green light laser diode and a blue light laser diode, and light beams emitted by the laser diodes are combined into a parallel light beam;
the second light source module comprises a white light LED and a third collimating lens arranged on the light path of the white light LED;
the third light source module comprises a blue-violet light LED and a fourth collimating lens arranged on the light path of the blue-violet light LED;
a secondary light coupling device;
the light coupling device is arranged at the intersection of the light beams emitted by the first light source module and the second light source module, the first light beam emitted by the first light source module passes through the light coupling device from the through hole, the second light beam emitted by the second light source module is reflected by the reflecting structure and then emitted along the advancing direction of the first light beam so as to form a coupling light beam with the first light beam, the secondary light coupling device is arranged at the intersection of the third light beam emitted by the third light source module and the coupling light beam, the coupling light beam penetrates through the secondary light coupling device, and the third light beam is reflected by the secondary light coupling device and then emitted along the advancing direction of the coupling light beam so as to be coupled with the coupling light beam;
the light source system has the following working modes:
basic illumination mode: simultaneously turning on the white light LED and the blue-violet light LED;
enhanced illumination mode: simultaneously turning on one or more of the white light LED light source, the blue-violet light LED light source and the plurality of laser diodes;
pure laser mode: and simultaneously turning on the blue-violet LED light source and one or more of the laser diodes.
2. The light source system for an endoscope system according to claim 1, wherein the reflective structure comprises a reflective film layer overlying the substrate.
3. The light source system for an endoscope system according to claim 2, wherein the reflectance of the reflective film layer is more than 99% in a wavelength band of 400nm to 700 nm.
4. The light source system for an endoscope system according to claim 1, wherein said through hole is located at a center of said reflecting structure.
5. The light source system applied to an endoscope system according to claim 1, wherein the shape of the through hole comprises a rectangular shape, a circular shape, or an elliptical shape.
6. The light source system applied to an endoscope system according to claim 1, comprising a light-transmitting member embedded in the through-hole.
7. The light source system applied to an endoscope system according to claim 1, wherein a ratio of the through hole area to the substrate area satisfies: when the light beam is reflected by the reflecting structure, the reduction ratio of the luminous flux caused by the through hole is not more than 30%.
8. The light source system for an endoscope system according to claim 1, wherein an angle between said light coupling means and said first light beam is 30 ° -60 °.
9. The light source system for an endoscope system according to claim 8, wherein the first light beam is orthogonal to the second light beam, and an angle between the light coupling device and the first light beam is 45 °.
10. The light source system for an endoscope system according to claim 1, wherein a wavelength of the red laser light emitted from the red laser diode is 630 to 670nm, a wavelength of the green laser light emitted from the green laser diode is 510 to 550nm, and a wavelength of the blue laser light emitted from the Lan Guangji diode is 430 to 470nm.
11. The light source system for an endoscope system according to claim 1, wherein the secondary light coupling device comprises a secondary substrate and a transmissive/reflective film layer covering the secondary substrate, and parameters of the transmissive/reflective film layer satisfy: the reflectivity of the film layer is more than 99% in the wave band of 390nm-420 nm; the transmittance is more than 95% in the wave band of 440nm-700 nm.
12. The light source system for an endoscope system according to claim 1, wherein said secondary light coupling device comprises a secondary substrate having a through hole formed thereon, and a reflective film layer disposed around said through hole, wherein said through hole is configured to allow said coupled light beam to penetrate said secondary substrate, and wherein said reflective structure is configured to reflect said third light beam.
13. The light source system for an endoscope system according to claim 1, wherein the third light beam is orthogonal to the coupled light beam, and an angle between the secondary light coupling device and the coupled light beam is 45 °.
14. The light source system for an endoscope system according to claim 1, comprising a second converging lens and a light homogenizing rod, wherein a light inlet of the light homogenizing rod is placed at a focal point of the second converging lens, and the coupled light beam enters the light homogenizing rod after being converged by the second converging lens.
15. An endoscope system comprising the light source system of any one of claims 1 to 14.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611129836.7A CN106526874B (en) | 2016-12-09 | 2016-12-09 | Optical coupling device, light source system and endoscope system |
| PCT/CN2017/093473 WO2018103341A1 (en) | 2016-12-09 | 2017-07-19 | Light coupled device, light source system, and endoscope system |
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| CN201611129836.7A CN106526874B (en) | 2016-12-09 | 2016-12-09 | Optical coupling device, light source system and endoscope system |
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| CN106526874A CN106526874A (en) | 2017-03-22 |
| CN106526874B true CN106526874B (en) | 2023-07-07 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106526874B (en) * | 2016-12-09 | 2023-07-07 | 深圳开立生物医疗科技股份有限公司 | Optical coupling device, light source system and endoscope system |
| KR101877921B1 (en) * | 2017-04-26 | 2018-07-12 | 인더스마트 주식회사 | Optic assembly and light source device for endoscope including the same |
| CN109452922A (en) * | 2018-12-17 | 2019-03-12 | 深圳开立生物医疗科技股份有限公司 | A kind of endoscope and its light supply apparatus |
| CN110955049A (en) * | 2019-11-15 | 2020-04-03 | 北京理工大学 | Off-axis reflection type near-to-eye display system and method based on small hole array |
| CN112162356B (en) * | 2020-09-29 | 2023-06-27 | 武汉中科医疗科技工业技术研究院有限公司 | Optical coupling device, light source system and light flux control method thereof |
| CN113325592A (en) * | 2021-06-03 | 2021-08-31 | 广东省科学院半导体研究所 | Light beam converging device and light emitting system |
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| CN106526874A (en) | 2017-03-22 |
| WO2018103341A1 (en) | 2018-06-14 |
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