CN211155673U - Multispectral light source - Google Patents
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- CN211155673U CN211155673U CN201921814100.2U CN201921814100U CN211155673U CN 211155673 U CN211155673 U CN 211155673U CN 201921814100 U CN201921814100 U CN 201921814100U CN 211155673 U CN211155673 U CN 211155673U
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Abstract
The embodiment of the utility model discloses multispectral light source relates to a light source, can provide the light of multiple spectrum, and the switching light emitting mode that can be convenient. The multispectral light source comprises a shell, a first light source, a second light source and an optical device for changing a light path are arranged in the shell, a light exit port is arranged on the shell, the optical device is arranged on a light exit path of the first light source and the second light source, the optical device guides light emitted by the first light source and the second light source to the light exit port, and the light spectrums of the light emitted by the first light source and the light emitted by the second light source are different.
Description
Technical Field
The utility model relates to a light source especially relates to a multispectral light source.
Background
With the rapid development of science and technology, light with various spectrums is required to be used for illumination in many occasions at present. For example, the current endoscopic imaging systems are no longer limited to visible light imaging and display, and many endoscopic imaging systems capable of imaging different tissue depths are available on the market, and such endoscopic imaging systems need to illuminate tissues with light of different spectra.
However, since the light of each spectrum is provided by a different light source, it is inconvenient to replace a plurality of different light sources when the light of each spectrum is used for illumination.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiments of the present invention provide a multispectral light source, which can provide light of multiple spectrums and can conveniently switch the light emitting mode.
An embodiment of the utility model provides a multispectral light source, which comprises a housin, be provided with first light source, second light source in the casing and be used for changing the optical device of light path, be provided with the light exit port on the casing, optical device sets up first light source with on the light exit path of second light source, optical device will first light source with the light guide that the second light source sent arrives the light exit port, wherein, first light source with the spectrum of the light that the second light source sent is different.
Optionally, the optical device is a beam splitter prism, and the beam splitter prism includes a first incident surface, a second incident surface, and an exit surface; the first light source is positioned on one side of a first incident surface of the beam splitter prism, the second light source is positioned on one side of a second incident surface of the beam splitter prism, and the light ray exit port is positioned on one side of an exit surface of the beam splitter prism; the light emitted by the first light source enters the first incident surface of the beam splitter prism and exits from the exit surface to the light exit port, and the light emitted by the second light source enters the second incident surface of the beam splitter prism and exits from the exit surface to the light exit port.
Optionally, the splitting prism includes a first prism and a second prism, the first prism and the second prism are right-angle triangular prisms of 45 degrees, and the splitting prism is a right-angle quadrangular composite prism formed by splicing the first prism and the second prism; wherein, the inclined plane of first prism has plated the complete membrane that passes through, the inclined plane of second prism has plated the pellicle.
Optionally, one of the side surfaces of the first prism is a first incident surface, one of the side surfaces of the second prism adjacent to the first incident surface is a second incident surface, and the side surface opposite to the first incident surface is an exit surface; the light splitting prism is characterized in that incident light emitted by a first light source is perpendicular to the first incident surface, enters the light splitting prism, and directly passes through the full-transparent film and the semi-transparent film to be emitted from the emergent surface; and the incident light emitted by the second light source is perpendicular to the second incident surface, enters the light splitting prism, is reflected by the semi-permeable membrane and is emitted from the emergent surface perpendicular to the incident light.
Optionally, a focusing element for converging light rays is arranged at the exit surface of the beam splitter prism, and light rays emitted from the exit surface of the beam splitter prism are converged by the focusing element and then emitted towards the light ray exit port.
Optionally, a third light source is further disposed in the casing, the third light source and the second light source are disposed in parallel, and the emergent light directions of the third light source and the second light source are the same; or the third light source and the first light source are arranged in parallel, and the emergent light rays of the third light source and the first light source are consistent in direction.
Optionally, the first light source is an L ED lamp, the second light source is a red laser lamp, and the third light source is a violet laser lamp.
Optionally, the first light source is further connected to a first light source switch, and the second light source is further connected to a second light source switch.
Optionally, the lighting device further comprises a voltage converter, wherein one end of the voltage converter is used for being connected with a power supply, and the other end of the voltage converter is respectively connected with the first light source and the second light source; the voltage converter is further connected with a voltage adjusting knob, and the voltage adjusting knob is used for adjusting the voltage of the first light source and the voltage of the second light source input by the voltage converter.
Optionally, a light guide beam interface for connecting with a light guide beam is installed at the light exit.
Optionally, the housing is further provided with a first cooling fan and a second cooling fan, the air inlet of the first cooling fan is located inside the housing, and the air inlet of the second cooling fan is located outside the housing.
The embodiment of the utility model provides a multispectral light source, including the casing, be provided with first light source, second light source and the optical device who is used for changing the light path in the casing, be provided with the light exit port on the casing, optical device sets up on the light exit path of first light source and second light source, optical device leads the light that first light source and second light source sent to the light exit port, wherein, the spectrum of the light that first light source and second light source sent is different; when the first light source is turned on and the second light source is turned off, the optical device only guides the light emitted by the first light source to the light ray exit port, so that the multispectral light source only provides the light emitted by the first light source; when the first light source is turned off and the second light source is turned on, the optical device only guides the light emitted by the second light source to the light ray exit port, so that the multispectral light source only provides the light emitted by the second light source; when the first light source and the second light source are simultaneously lightened, the optical device guides the light emitted by the first light source and the light emitted by the second light source to the light ray exit port, so that the multispectral light source provides fused light formed by the light emitted by the first light source and the light emitted by the second light source; therefore, the light emitting modes of the multispectral light source can be switched by controlling the on and off of the first light source and the second light source, so that light with different spectrums is obtained, and the convenience in switching the light emitting modes of the multispectral light source is greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a general schematic diagram of an alternative implementation of a multispectral light source according to an embodiment of the present invention;
fig. 2 is a diagram illustrating a positional relationship between the first light source, the second light source, the third light source and the optical device according to an alternative embodiment of the present invention;
fig. 3 is a schematic diagram of a first prism and a second prism provided in an embodiment of the present invention;
fig. 4 is a schematic diagram of an alternative implementation of a beam splitter prism according to an embodiment of the present invention;
fig. 5 is another schematic diagram of an alternative implementation of a beam splitter prism according to an embodiment of the present invention;
fig. 6 is a light path diagram of light emitted from the first light source passing through the beam splitter prism according to the embodiment of the present invention;
fig. 7 is a light path diagram of light emitted from the second light source passing through the beam splitter prism according to the embodiment of the present invention;
fig. 8 is a light path diagram of light emitted by the first light source and the second light source passing through the beam splitter prism according to the embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
An embodiment of the utility model provides a multispectral light source can provide the light of multiple spectrum, and can improve the convenience when switching the luminescence mode.
As shown in fig. 1, an embodiment of the present invention provides a multispectral light source, including a housing 1, a first light source 2, a second light source 3 and an optical device 4 for changing a light path are provided in the housing 1, a light exit port 11 is provided on the housing 1, the optical device 4 is provided on a light exit path of the first light source 2 and the second light source 3, the optical device 4 guides light emitted by the first light source 2 and the second light source 3 to the light exit port 11, wherein spectra of light emitted by the first light source 2 and the second light source 3 are different.
In this embodiment, the spectrum of the light emitted by the first light source may be completely different from or not completely the same as the spectrum of the light emitted by the second light source; for example, in an embodiment of the present invention, the wavelength of the light emitted by the first light source is between 10-400nm, and the wavelength of the light emitted by the second light source is between 620-760nm, where the spectrum of the light emitted by the first light source is completely different from the spectrum of the light emitted by the second light source according to the correlation between the spectrum of the light and the wavelength; in another embodiment of the present invention, the wavelength of the light emitted from the first light source is between 380-780nm, and the wavelength of the light emitted from the second light source is between 10-400nm, and then the spectrum of the light emitted from the first light source and the spectrum of the light emitted from the second light source are partially overlapped according to the correlation between the spectrum of the light and the wavelength; of course, the first light source, and/or the second light source may also be a monochromatic light source.
When the first light source is turned on and the second light source is turned off, the optical device only guides the light emitted by the first light source to the light ray exit port, so that the multispectral light source only provides the light emitted by the first light source; when the first light source is turned off and the second light source is turned on, the optical device only guides the light emitted by the second light source to the light ray exit port, so that the multispectral light source only provides the light emitted by the second light source; when the first light source and the second light source are simultaneously lightened, the optical device guides the light emitted by the first light source and the light emitted by the second light source to the light ray exit port, so that the multispectral light source provides fused light formed by the light emitted by the first light source and the light emitted by the second light source; therefore, the light emitting modes of the multispectral light source can be switched by controlling the on and off of the first light source and the second light source, so that light with different spectrums is obtained, and the convenience in switching the light emitting modes of the multispectral light source is greatly improved.
It should be understood that fig. 1 is a schematic view of a housing with a top cover of the multispectral light source removed, and the housing in this embodiment should have good performance of isolating external light so as to ensure that the light projected to the light exit port is the light emitted by the light source inside the housing as much as possible. In addition, when the multispectral light source provided by the embodiment is applied to medical equipment, the housing can also have good external interference resistance, such as electromagnetic radiation resistance, antistatic performance and the like.
Optionally, in the above embodiment, the first light source may further be connected to a first light source switch, and the second light source may further be connected to a second light source switch. Therefore, the on-off of the first light source and the second light source can be conveniently controlled through the light source switch. The first light source switch and the second light source switch may be disposed at an outer side of the housing, so that it may be conveniently used.
As shown in fig. 2, optionally, in the above embodiment, a third light source 9 may be further disposed in the casing, where the third light source 9 is disposed in parallel with the second light source 3, and the emergent light directions of the third light source 9 and the second light source 3 are the same; or the third light source and the first light source are arranged in parallel, and the emergent light rays of the third light source and the first light source are consistent in direction.
In this embodiment, when the third light source is disposed in parallel with the second light source or the first light source, the light emitted from the third light source can also be incident on the optical device, so that the optical device guides the light emitted from the third light source to the light exit port, so that the multispectral light source can provide light of at least three spectra when the spectra of the light emitted from the third light source are different from those of the light emitted from the first light source and the second light source.
Optionally, the third light source may also be connected to a third light source switch, so that the on/off of the third light source can be conveniently controlled through the third light source switch.
Optionally, the optical device in the above embodiment may be a plane mirror for changing a light path, or may be a prism, specifically, a beam splitter prism; when the beam splitter prism is adopted, the beam splitter prism comprises a first incident surface, a second incident surface and an emergent surface; the first light source is positioned on one side of a first incident surface of the beam splitter prism, the second light source is positioned on one side of a second incident surface of the beam splitter prism, and the light ray exit port is positioned on one side of an exit surface of the beam splitter prism; the light emitted by the first light source enters the first incident surface of the beam splitter prism and exits from the exit surface to the light exit port, and the light emitted by the second light source enters the second incident surface of the beam splitter prism and exits from the exit surface to the light exit port.
In this embodiment, the beam splitter prism reflects, refracts, or directly conducts the light entering from the first incident surface to the exit surface to be emitted, and in the same way, the beam splitter prism reflects, refracts, or directly conducts the light entering from the second incident surface to the exit surface to be emitted; in this way, the light splitting prism can direct the light emitted by the first light source and the light emitted by the second light source to the same position (exit surface) and then emit the light to the light ray entrance port, which is convenient for other devices to use the multispectral light source provided by this embodiment, for example, the multispectral light source can be used as the light source of the endoscope imaging system, and at this time, a light guide beam interface for connecting with the light guide beam of the endoscope imaging system can be installed at the light ray exit port, for example, the light guide beam interface can be matched with a light guide fiber with a diameter of 0.03 mm.
The structure and the manufacture of the beam splitter prism are generally simpler, and the beam splitter prism has a good light guide effect, so that the beam splitter prism is adopted for guiding light, the manufacturing cost of the multispectral light source is reduced, and the structure of the multispectral light source can be simplified.
As shown in fig. 3 and 4, as an alternative implementation of the above embodiment, the splitting prism includes a first prism 41 and a second prism 42, the first prism 41 and the second prism 42 are right-angled triangular prisms of 45 °, and the splitting prism is a compound prism of a right-angled quadrangular prism formed by splicing the first prism 41 and the second prism 42; wherein, the inclined plane of the first prism 41 is plated with a full-transparent film, and the inclined plane of the second prism 42 is plated with a semi-transparent film.
In this embodiment, optionally, as shown in fig. 1 and fig. 5, one of the side surfaces of the first prism 41 is a first incident surface 411 (the first incident surface 411 referred to herein is a side surface of the first prism 41 opposite to the first light source 2), one side surface of the second prism 42 adjacent to the first incident surface 411 is a second incident surface 421 (the second incident surface 421 referred to herein is a side surface of the second prism 42 opposite to the second light source 3), and one side surface opposite to the first incident surface 411 is an exit surface 422; preferably, as shown in fig. 1 and fig. 5, the axis of the first light source 2 may be arranged perpendicular to the first incident surface 411, and then, as can be seen from fig. 6, the incident light emitted by the first light source 2 enters the light splitting prism perpendicular to the first incident surface 411 and then directly passes through the fully transparent film and the semi-transparent film to exit from the exit surface 422; as shown in fig. 1 and 5, preferably, the axis of the second light source 3 may be arranged perpendicular to the second incident surface 421, and then, as can be seen from fig. 7, the incident light emitted by the second light source 3 enters the beam splitting prism perpendicular to the second incident surface 421, is reflected by the semi-permeable membrane, and exits from the exit surface 422 perpendicular to the incident light. When the first light source and the second light source emit light simultaneously, an optical path diagram of light entering the light splitting prism is shown in fig. 8. The beam splitting prism that this embodiment provided's simple structure, simple to operate.
As shown in fig. 1, in the above embodiment, optionally, a focusing member 5 for converging light rays is disposed at the exit surface of the light splitting prism, and light emitted from the exit surface of the light splitting prism is converged by the focusing member 5 and then emitted toward the light exit port 11.
In this embodiment, the focusing element may be a focusing lens, such as a convex lens, one side of the focusing lens is opposite to the exit surface, or is attached to the exit surface, and the other side of the focusing lens is opposite to the light exit port; optionally, the focusing element is disposed between the exit surface of the beam splitter prism and the light guide beam interface; therefore, the focusing lens can focus the light emitted from the emitting surface and project the light to the light ray emitting port, so that the light loss can be effectively reduced, and the illumination intensity incident into the light ray emitting port is improved.
As shown in fig. 1, optionally, the multispectral light source further includes a voltage converter 6, where one end of the voltage converter 6 is used for connecting to a power supply, and the other end is connected to the first light source 2 and the second light source 3, respectively; the voltage converter 6 is further connected with a voltage adjusting knob 61, and the voltage adjusting knob 61 is used for adjusting the voltage input by the voltage converter 6 to the first light source 2 and the second light source 3.
In this embodiment, the voltage converter is configured to convert the power supply voltages of the multispectral light source into voltages required by the first light source and the second light source, respectively; the voltage adjusting knob can adjust the voltage output by the voltage converter to the first light source and the second light source, so that the brightness of the light emitted by the first power source and the second power source can be adjusted by adjusting the power supply voltage of the first light source and the second light source.
As shown in fig. 1, optionally, the housing 1 is further provided with a first cooling fan 7 and a second cooling fan 8, an air inlet of the first cooling fan 7 is located inside the housing 1, and an air inlet of the second cooling fan 8 is located outside the housing 1.
In this embodiment, the first heat dissipation fan is configured to discharge the gas with a higher temperature inside the casing to the outside of the casing, and the second heat dissipation fan is configured to pump the gas with a lower temperature outside the casing to the inside of the casing; the first cooling fan and the second cooling fan are matched with each other, so that air flowing in the shell can be accelerated, the cooling effect of the multispectral light source is improved, and the continuous use duration of the multispectral light source can be prolonged.
As shown in fig. 1, in the above embodiment, when the first light source is L ED lamp, the first heat dissipation fan can be disposed at the back of the L ED lamp because L ED lamp generates a large amount of heat, so that the heat generated from the L ED lamp can be discharged out of the housing in time.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. The term "comprising", without further limitation, means that the element so defined is not excluded from the group consisting of additional identical elements in the process, method, article, or apparatus that comprises the element.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (11)
1. A multispectral light source is characterized by comprising a shell, wherein a first light source, a second light source and an optical device for changing a light path are arranged in the shell, a light exit port is formed in the shell, the optical device is arranged on a light exit path of the first light source and the second light source, the optical device guides light emitted by the first light source and the second light source to the light exit port, and the spectrums of the light emitted by the first light source and the second light source are different.
2. The multispectral light source of claim 1, wherein the optical device is a beam splitter prism comprising a first entrance face, a second entrance face, and an exit face; wherein the content of the first and second substances,
the first light source is positioned on one side of a first incident surface of the beam splitter prism, the second light source is positioned on one side of a second incident surface of the beam splitter prism, and the light exit port is positioned on one side of an exit surface of the beam splitter prism;
the light emitted by the first light source enters the first incident surface of the beam splitter prism and exits from the exit surface to the light exit port, and the light emitted by the second light source enters the second incident surface of the beam splitter prism and exits from the exit surface to the light exit port.
3. The multispectral light source of claim 2, wherein the beam splitter prism comprises a first prism and a second prism, the first prism and the second prism are right-angled triangular prisms of 45 degrees, and the beam splitter prism is a composite prism of a right-angled quadrangular prism formed by splicing the first prism and the second prism; wherein, the inclined plane of first prism has plated the complete membrane that passes through, the inclined plane of second prism has plated the pellicle.
4. The multispectral light source of claim 3, wherein one of the side surfaces of the first prism is a first entrance surface, one of the side surfaces of the second prism adjacent to the first entrance surface is a second entrance surface, and the side surface opposite the first entrance surface is an exit surface; wherein the content of the first and second substances,
the incident light emitted by the first light source is perpendicular to the first incident surface, enters the light splitting prism, directly passes through the fully-transparent film and the semi-transparent film and then is emitted from the emergent surface;
and the incident light emitted by the second light source is perpendicular to the second incident surface, enters the light splitting prism, is reflected by the semi-permeable membrane and is emitted from the emergent surface perpendicular to the incident light.
5. The multispectral light source as claimed in any one of claims 2 to 4, wherein the exit surface of the beam splitter prism is provided with a focusing element for converging light, and light emitted from the exit surface of the beam splitter prism is converged by the focusing element and then emitted toward the light exit port.
6. The multispectral light source of claim 1, wherein the first light source is further coupled to a first light source switch, and wherein the second light source is further coupled to a second light source switch.
7. The multispectral light source of claim 1, wherein:
a third light source is arranged in the shell, the third light source and the second light source are arranged in parallel, and the emergent light directions of the third light source and the second light source are consistent; or
The third light source and the first light source are arranged in parallel, and the emergent light rays of the third light source and the first light source face in the same direction.
8. The multispectral light source of claim 7, wherein the first light source is an L ED lamp, the second light source is a red laser lamp, and the third light source is a violet laser lamp.
9. The multispectral light source of claim 1, further comprising a voltage converter having one end for connection to a power source and another end for connection to the first and second light sources, respectively;
the voltage converter is further connected with a voltage adjusting knob, and the voltage adjusting knob is used for adjusting the voltage of the first light source and the voltage of the second light source input by the voltage converter.
10. The multispectral light source of claim 1, wherein the light exit port is fitted with a light guide interface for coupling to a light guide.
11. The multispectral light source of claim 1, wherein the housing further comprises a first heat dissipation fan and a second heat dissipation fan, the first heat dissipation fan has an inlet opening located inside the housing, and the second heat dissipation fan has an inlet opening located outside the housing.
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| CN201921814100.2U CN211155673U (en) | 2019-10-24 | 2019-10-24 | Multispectral light source |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113288015A (en) * | 2021-04-01 | 2021-08-24 | 南京航空航天大学 | Blood flow and endogenous signal multimode endoscopic imaging system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113288015A (en) * | 2021-04-01 | 2021-08-24 | 南京航空航天大学 | Blood flow and endogenous signal multimode endoscopic imaging system |
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