Optical module and jaundice detection equipment

Abstract

The utility model provides an optical module and jaundice detection equipment. The optical module comprises an LED detection light source, an optical collimation module, an optical coupling module and a light receiving module. Wherein the LED detection light source is used for emitting detection light and comprises a light-emitting surface; the optical collimation module is arranged on an emergent light path of the detection light, one side of the optical collimation module is close to the light-emitting surface, and the optical collimation module is used for reducing the emergent angle of the detection light; the optical coupling module is arranged on one side, far away from the LED detection light source, of the optical collimation module and is used for converging the detection light rays adjusted by the optical collimation module; and the light receiving module is arranged at the convergence position of the detection light and is used for transmitting the converged detection light to the to-be-detected area. According to the technical scheme, the LED detection light source is adopted, so that the cost of replacing the light source is effectively reduced, and the detection effect on the bilirubin concentration is improved; meanwhile, the detection effect of the bilirubin concentration is further improved while the light utilization rate of the detection light is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical device design and manufacturing, and in particular to an optical module and jaundice detection equipment. Background Art

[0002] Jaundice is a phenomenon in which the concentration of bilirubin in serum increases, causing yellowing of the sclera, skin, mucous membranes, etc. It is a common feature of many diseases and is common in neonatal patients. Traditional detection methods generally use blood tests to detect the concentration of bilirubin in serum to identify jaundice symptoms, but blood tests are more harmful to patients, especially neonatal patients. Since bilirubin has a strong absorption effect on light intensities of specific wavelengths, handheld non-invasive jaundice detection devices have emerged, such as transcutaneous jaundice meters and other devices.

[0003] At present, the light sources used in most jaundice detection devices are halogen lamps or xenon lamps. Halogen lamps have a continuous spectrum, but generally have a short lifespan. Replacing the light source is very complicated, and sometimes even the entire device needs to be replaced directly, which is costly. Xenon lamps have a high light efficiency, but the spectrum is pulsed, which is not conducive to detecting and extracting light energy information, and the bilirubin concentration detection effect is poor. Utility Model Content

[0004] The utility model provides an optical module and jaundice detection equipment, thereby increasing the service life of the detection light source, reducing the cost of lamp source replacement, and improving the utilization rate of light, thereby improving the detection effect of bilirubin concentration.

[0005] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present invention.

[0006] According to a first aspect of the present invention, an optical module is provided, which is applied to a jaundice detection device, such as a transcutaneous jaundice instrument, and the optical module comprises:

[0007] An LED detection light source, used for emitting detection light, including a light-emitting surface;

[0008] An optical collimation module, arranged on the outgoing light path of the detection light, with one side close to the light-emitting surface, for reducing the outgoing angle of the detection light;

[0009] An optical coupling module, arranged on a side of the optical collimation module away from the LED detection light source, and used for converging the detection light adjusted by the optical collimation module;

[0010] The light receiving module is arranged at the convergence position of the detection light and is used to transmit the converged detection light to the area to be detected.

[0011] According to one embodiment of the present utility model, based on the above solution, the optical collimation module includes:

[0012] A first collimating lens is disposed close to the light emitting surface, and is used to receive the detection light emitted from the light emitting surface and preliminarily adjust the emission angle of the detection light;

[0013] The second collimating lens is arranged on a side of the first collimating lens away from the light-emitting surface, between the first collimating lens and the optical coupling module, and closer to the optical coupling module, and is used to readjust the exit angle of the detection light emitted from the first collimating lens, and cooperate with the optical coupling module so that the detection light with the adjusted exit angle can converge at the specified convergence position after passing through the optical coupling module.

[0014] According to one embodiment of the present utility model, based on the above solution, the first collimating lens includes:

[0015] A first light-incoming surface, arranged at a side close to the light-emitting surface, for receiving the detection light emitted from the light-emitting surface;

[0016] The first light emitting surface is arranged at a side away from the light emitting surface and is used for preliminarily adjusting the emitting angle of the detection light.

[0017] According to one embodiment of the present utility model, based on the above solution, the second collimating lens includes:

[0018] A second light-incoming surface, disposed on a side close to the first light-emitting surface, for receiving the detection light after the emission angle is preliminarily adjusted on the first light-emitting surface;

[0019] The second light emitting surface is arranged at a side away from the first light emitting surface, and is used for re-adjusting the emission angle of the detection light emitted from the first collimating lens so that the emission angle of the detection light is within the target emission angle range.

[0020] According to one embodiment of the present invention, based on the above-mentioned scheme, the first light-incoming surface and the second light-incoming surface are planes, the first light-emitting surface and the second light-emitting surface are curved surfaces, and the curvature radius of the second light-emitting surface is greater than the curvature radius of the first light-emitting surface.

[0021] According to an embodiment of the present utility model, based on the above solution, the optical coupling module includes at least one coupling lens, and the coupling lens includes:

[0022] A light receiving surface, arranged at a side close to the optical collimation module, for receiving the detection light after the incident angle is reduced;

[0023] The focusing surface is arranged at a side away from the optical collimation module, and is used for focusing the detection light after the exit angle is reduced.

[0024] According to an implementation of the present utility model, based on the above-mentioned solution, the number of the coupling lenses in the optical coupling module is odd.

[0025] According to an embodiment of the present utility model, based on the above solution, the optical receiving module includes:

[0026] The optical fiber bundle receiving surface includes a plurality of optical fibers, is arranged at the convergence position of the detection light, and is used to receive the converged detection light and transmit the detection light to the area to be detected.

[0027] According to one embodiment of the present utility model, based on the above solution, the optical fiber bundle receiving surface includes:

[0028] A plastic package is used to package the multiple optical fibers.

[0029] According to a second aspect of the present invention, there is provided a jaundice detection device, comprising:

[0030] The optical module in the first aspect is used to generate detection light and irradiate the detection light to the area to be detected;

[0031] A photoelectric detector, used for receiving the reflected light obtained after the detection light is absorbed and scattered by the to-be-detected area, and outputting the light intensity of the reflected light;

[0032] A control calculation module is electrically connected to the optical module and the photodetector, and is used to control the emission and shutdown of the optical module, and to determine the transcutaneous bilirubin concentration of the area to be detected according to the light intensity detected by the photodetector.

[0033] According to the technical solution provided in the utility model, the detection light is emitted by an LED detection light source, and the LED detection light source includes a light-emitting surface; the optical collimation module is arranged on the emission light path of the detection light and one side is close to the light-emitting surface to reduce the emission angle of the detection light; the detection light adjusted by the optical collimation module is converged by an optical coupling module arranged on the side of the optical collimation module away from the LED detection light source, and the converged detection light is transmitted to the area to be detected by a light receiving module arranged at the convergence position of the detection light. On the one hand, the LED detection light source has a longer service life than a halogen lamp or a hernia lamp, effectively reducing the cost of replacing the lamp source, and the spectral range of the LED light source is adapted to the detection of jaundice symptoms, improving the detection effect of bilirubin concentration; on the other hand, the large-angle detection light emitted by the LED detection light source is collected within a certain range in combination with the optical collimation module, so that the detection optical fiber is converged and injected into the light receiving module in combination with the optical coupling module, while improving the light utilization rate of the detection light, the detection effect of bilirubin concentration is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The above and other features and advantages of the present invention will become more apparent by describing in detail example embodiments thereof with reference to the attached drawings.

[0035] Figure 1 It is a schematic diagram of the structure of an optical module according to one embodiment of the present specification.

[0036] Figure 2 It is a schematic structural diagram of the optical fiber bundle receiving surface of one embodiment of this specification.

[0037] The main components in the figure are described as follows:

[0038] 10. Optical module; 11. LED detection light source; 111. Light emitting surface; 12. Optical collimation module; 121. First collimating lens; 1211. First light incident surface; 1212. Second light incident surface; 122. Second collimating lens; 1221. Second light incident surface; 1222. Second light emitting surface; 13. Optical coupling module; 131. Light receiving surface; 132. Light focusing surface; 14. Light receiving module; 141. Optical fiber bundle receiving surface; 1411. Optical fiber; 1412. Plastic package. DETAILED DESCRIPTION

[0039] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0040] In the present invention, the terms "a", "an", "the", "said" and "at least one" are used to indicate the existence of one or more elements / components / etc.; the terms "comprising", "including" and "having" are used to express an open-ended inclusion and mean that in addition to the listed elements / components / etc., there may be other elements / components / etc.; the terms "first", "second" and "third" etc. are used only as labels and are not intended to limit the quantity of their objects.

[0041] refer to Figure 1 As shown, in the embodiment of this specification, an optical module 10 is first provided, and the optical module 10 may at least include an LED detection light source 11, an optical collimation module 12, an optical coupling module 13 and a light receiving module 14. Among them:

[0042] The LED detection light source 11 can be used to emit detection light. For example, the LED detection light source can be a 1mm*1mm LED light-emitting chip, or a LED light-emitting chip of other sizes, as long as the size of the LED detection light source is the minimum size that can be used, thereby reducing the diffusion angle of the light at the source and reducing the light expansion of the LED detection light source 11. When the LED detection light source 11 is started, light is generated from one side to form a light-emitting surface 111.

[0043] Optionally, the LED detection light source 11 can be a white light source, and the wavelength of the emitted white light is in the range of 380nm-650nm, and the wavelength of the emitted white light is mainly concentrated around 470nm. In this way, the detection light emitted by the LED detection light source 11 can realize effective detection of bilirubin concentration, thereby improving the detection effect and accuracy of bilirubin concentration.

[0044] The optical collimation module 12 can be set on the output light path of the detection light generated by the LED detection light source 11, and one side is as close to the light-emitting surface 111 as possible, so that the optical collimation module 12 can receive all the light generated by the LED detection light source 11 and reduce the output angle of the detection light, so that the large-angle detection light emitted by the LED detection light source 11 can be within a controllable range, thereby providing a better incident angle for subsequent optical elements, thereby improving the utilization rate of the detection light emitted by the LED detection light source 11 and reducing the light expansion of the LED detection light source 11.

[0045] The optical coupling module 13 can be arranged on a side of the optical collimation module 12 away from the LED detection light source 11, so that the detection light after the optical collimation module 12 reduces the exit angle can be used as the incident light. Since the optical collimation module 12 has collimated the detection light and made the angle of the detection light within a controllable range, the optical coupling module 13 can easily converge the detection light adjusted by the optical collimation module 12 and accurately converge it at the required convergence point.

[0046] The light receiving module 14 can be set on a side of the optical coupling module 13 away from the optical collimation module 12, and at the convergence position of the detection light. The setting position can be determined specifically according to the parameter settings of the optical collimation module 12 and the optical coupling module 13 in actual use, so that the converged detection light can be completely received by the light receiving module 14 or as much as possible, further improving the utilization rate of the detection light, and increasing the light energy of the detection light transmitted by the light receiving module 14. Therefore, when the converged detection light is transmitted to the area to be detected, the detection effect of the bilirubin concentration in the area to be detected can be effectively achieved, thereby improving the detection accuracy of the bilirubin concentration.

[0047] By adopting the LED detection light source 11, compared with halogen lamps or xenon lamps, the service life of the detection light source is improved, the cost of replacing the lamp source is effectively reduced, and the spectral range of the LED light source is adapted to the detection of jaundice symptoms, thereby improving the detection effect of bilirubin concentration; on the other hand, in combination with the optical collimation module 12, the large-angle detection light emitted by the LED detection light source is collected within a certain range, and then in combination with the optical coupling module 13, the detection optical fiber is converged and emitted into the light receiving module 14, thereby improving the light utilization rate of the detection light and further improving the detection effect of the bilirubin concentration.

[0048] Next, combine Figure 1 and Figure 2 The optical module 10 in the embodiment of this specification is described in detail.

[0049] In an exemplary embodiment of the present specification, the optical collimation module 12 may include a first collimation lens 121 and a second collimation lens 122. Wherein:

[0050] The first collimating lens 121 can be arranged close to the light-emitting surface 111, and can be arranged as close as possible without affecting the normal light emission of the LED detection light source 11. For example, the LED detection light source 11 can use a 1mm*1mm light-emitting chip, then the distance between the first collimating lens 121 and the light-emitting surface 111 of the LED detection light source 11 can be 1mm; the LED detection light source 11 can also use a 2mm*2mm light-emitting chip, then the distance between the first collimating lens 121 and the light-emitting surface 111 of the LED detection light source 11 can be 0.8mm; of course, it can be specifically determined according to the size of the light-emitting chip of the LED detection light source 11 in actual use. This exemplary embodiment does not specifically limit the spacing distance between the first collimating lens 121 and the light-emitting surface 111. The first collimating lens 121 can be used to receive the detection light emitted from the light-emitting surface 111 and preliminarily adjust the emission angle of the detection light.

[0051] The second collimating lens 122 can be arranged on a side of the first collimating lens 121 away from the light emitting surface 111. At this time, the second collimating lens 122 is between the first collimating lens 121 and the optical coupling module 13. In this way, the second collimating lens 122 can receive the detection light received by the first collimating lens 121 and adjusted in angle, and then re-adjust it and inject it into the optical coupling module 13. The second collimating lens 122 can re-adjust the exit angle of the detection light emitted from the first collimating lens 121, and cooperate with the optical coupling module 13, so that the detection light after adjusting the exit angle can converge at a specified convergence position after passing through the optical coupling module 13.

[0052] refer to Figure 1 As shown, the optical collimation module 12 is located between the LED detection light source 11 and the optical coupling module 13. More specifically, the first collimation lens 121 in the optical collimation module 12 can be closer to the light-emitting surface 111, and the second collimation lens 122 in the optical collimation module 12 is closer to the optical coupling module 13. In this way, the first collimation lens 121 can better receive the detection light emitted from the light-emitting surface 111, and the second collimation lens 122 can better input the detection light after adjusting the angle to the optical coupling module 13, effectively improving the utilization rate of the detection light, reducing the light expansion of the detection light, and after the first collimation lens 121 and the second collimation lens 122 pre-process the detection light, the optical coupling module 13 can complete the convergence of the input detection light, improve the convergence effect of the optical coupling module 13 on the detection light, and thus effectively improve the optical coupling effect between the optical coupling module 13 and the light receiving module 14.

[0053] Optionally, the first collimating lens 121 may include a first light-incoming surface 1211 and a first light-emitting surface 1212. The first light-incoming surface 1211 may be disposed on a side close to the light-emitting surface 111 to receive the detection light emitted from the light-emitting surface 111; the first light-emitting surface 1212 may be disposed on a side away from the light-emitting surface 111 to preliminarily adjust the emission angle of the detection light.

[0054] Optionally, the second collimating lens 122 may include a second light-incoming surface 1221 and a second light-emitting surface 1222. The second light-incoming surface 1221 may be disposed on a side close to the first light-emitting surface 1212, and is used to receive the detection light after the emission angle is preliminarily adjusted on the first light-emitting surface 1212; the second light-emitting surface 1222 is disposed on a side away from the first light-emitting surface 1212, and is used to readjust the emission angle of the detection light emitted from the first collimating lens 121, so that the emission angle of the detection light is within the target emission angle range. For example, the target emission angle range may be 15° or 13°; the target emission angle range may also be calculated based on the numerical aperture of the optical fiber 1411 used in the optical receiving module 14, such as when the numerical aperture of the selected optical fiber is 0.22, then the target emission angle range may be obtained based on the calculation formula of the numerical aperture NA=n*sinα, and is α≈12.7°. Of course, this is only a schematic example, and should not impose any special limitations on this exemplary embodiment.

[0055] In an optional embodiment, the first collimating lens 121 and the second collimating lens 122 may be plano-convex lenses. Then, the first light-incoming surface 1211 and the second light-incoming surface 1221 may be planes, and the first light-emitting surface 1212 and the second light-emitting surface 1222 may be curved surfaces, and the radius of curvature of the second light-emitting surface 1222 may be greater than the radius of curvature of the first light-emitting surface 1212.

[0056] Optionally, the diameter of the second collimating lens 122 may be greater than the diameter of the first collimating lens 121 , and the lens thickness of the second collimating lens 122 may be greater than the lens thickness of the first collimating lens 121 .

[0057] For example, the diameter of the first collimating lens 121 can be 5.3 mm, and the diameter of the second collimating lens 122 can be 8 mm; the lens thickness of the first collimating lens 121 can be 3 mm, and the lens thickness of the second collimating lens 122 can be 4 mm; the radius of curvature of the first light-emitting surface 1212 can be 4.27 mm, and the radius of curvature of the second light-emitting surface 1222 can be 5.14 mm; of course, this is only a schematic example and should not impose any special limitations on this exemplary embodiment.

[0058] In an exemplary embodiment of the present specification, the optical coupling module 13 may include at least one coupling lens, and the coupling lens may include a light receiving surface 131 and a light collecting surface 132. The light receiving surface 131 may be arranged on a side close to the optical collimation module 12, for receiving the detection light after the exit angle is reduced; the light collecting surface 132 may be arranged on a side away from the optical collimation module 12, for collecting the detection light after the exit angle is reduced.

[0059] Optionally, the number of coupling lenses in the optical coupling module 13 is odd, for example, the number of coupling lenses used in the optical coupling module 13 may be 1, 3, 5, etc., as long as the number of coupling lenses used in the optical coupling module 13 is odd, this exemplary embodiment does not specifically limit this. By using an odd number of coupling lenses, not only can better symmetry and balance effects be provided, the light can be accurately aligned and evenly distributed, and the echo interference caused by multiple reflections can be effectively reduced, unnecessary reflection paths can be avoided, and the quality of the detection light can be improved. At the same time, the light intensity distribution and phase relationship in the optical path can be more flexibly controlled, thereby improving the optical coupling efficiency.

[0060] In an exemplary embodiment of this specification, reference is made to Figure 2 As shown, the optical receiving module 14 may include an optical fiber bundle receiving surface 141 , and the extension direction of the plane where the optical fiber bundle receiving surface 141 is located is perpendicular to the direction where the optical axis of the coupling lens in the optical coupling module 13 is located.

[0061] Optionally, the fiber bundle receiving surface 141 may include multiple optical fibers 1411, and the multiple optical fibers 1411 may be arranged at the convergence position of the detection light; the fiber bundle receiving surface 141 may be used to receive the converged detection light and efficiently transmit the detection light to the area to be detected.

[0062] Optionally, the optical fiber bundle receiving surface 141 may further include a plastic package 1412 , and the plastic package 1412 may be used to encapsulate the plurality of optical fibers 1411 .

[0063] For example, the optical fiber 1411 may be an optical fiber with a numerical aperture of 0.22 and a physical diameter of 200 μm, and finally packaged by the plastic package 1412 to obtain an optical fiber bundle with a diameter of about 3.12 mm, based on which the optical fiber bundle is formed the optical fiber bundle receiving surface 141.

[0064] The optical fiber bundle receiving surface 141 formed by encapsulating multiple optical fibers 1411 through the plastic package 1412 can effectively transmit the detection light at the convergence position to the area to be detected, improve the transmission efficiency of the detection light, and reduce the light energy loss of the detection light effect, thereby improving the detection effect of bilirubin concentration and improving the detection accuracy of bilirubin concentration.

[0065] The embodiments of this specification also provide a jaundice detection device, which can be used in scenarios where the bilirubin concentration of a patient is detected through the skin to identify jaundice symptoms. For example, the jaundice detection device can be a transcutaneous jaundice meter. Of course, it can also be other types of jaundice detection devices, and this example embodiment is not limited to this.

[0066] Optionally, the jaundice detection device may include the optical module 10, the photoelectric detector and the control calculation module in the embodiment of this specification.

[0067] The optical module 10 can be used to generate detection light and irradiate the detection light to the area to be detected; the photodetector can be used to receive the reflected light obtained after the detection light is absorbed and scattered by the area to be detected, and output the light intensity of the reflected light; the control calculation module is electrically connected to the optical module and the photodetector, and can be used to control the emission and shutdown of the optical module, as well as determine the transcutaneous bilirubin concentration of the area to be detected according to the light intensity detected by the photodetector.

[0068] It should be understood that the utility model does not limit its application to the detailed structure and arrangement of the components proposed in the utility model. The utility model can have other embodiments and can be implemented and executed in a variety of ways. The aforementioned deformation forms and modified forms fall within the scope of the utility model. It should be understood that the utility model disclosed and defined in the utility model extends to all alternative combinations of two or more individual features mentioned or evident in the text and / or the drawings. All these different combinations constitute multiple alternative aspects of the utility model. The embodiments described in the utility model illustrate the best known methods for implementing the utility model and will enable those skilled in the art to utilize the utility model.

Claims

1. An optical module, characterized in that: Applied to jaundice detection equipment, the optical module includes: An LED detection light source, used for emitting detection light, including a light-emitting surface; An optical collimation module, arranged on the outgoing light path of the detection light, with one side close to the light-emitting surface, for reducing the outgoing angle of the detection light; An optical coupling module, arranged on a side of the optical collimation module away from the LED detection light source, and used for converging the detection light adjusted by the optical collimation module; The light receiving module is arranged at the convergence position of the detection light and is used to transmit the converged detection light to the area to be detected.

2. The optical module according to claim 1, characterized in that: The optical collimation module comprises: A first collimating lens is disposed close to the light emitting surface, and is used to receive the detection light emitted from the light emitting surface and preliminarily adjust the emission angle of the detection light; The second collimating lens is arranged on a side of the first collimating lens away from the light-emitting surface, between the first collimating lens and the optical coupling module, and closer to the optical coupling module, and is used to readjust the exit angle of the detection light emitted from the first collimating lens, and cooperate with the optical coupling module so that the detection light with the adjusted exit angle can converge at the specified convergence position after passing through the optical coupling module.

3. The optical module according to claim 2, characterized in that: The first collimating lens comprises: A first light-incoming surface, arranged at a side close to the light-emitting surface, for receiving the detection light emitted from the light-emitting surface; The first light emitting surface is arranged at a side away from the light emitting surface and is used for preliminarily adjusting the emitting angle of the detection light.

4. The optical module according to claim 3, characterized in that: The second collimating lens comprises: A second light-incoming surface, disposed on a side close to the first light-emitting surface, for receiving the detection light after the emission angle is preliminarily adjusted on the first light-emitting surface; The second light emitting surface is arranged at a side away from the first light emitting surface, and is used for re-adjusting the emission angle of the detection light emitted from the first collimating lens so that the emission angle of the detection light is within the target emission angle range.

5. The optical module according to claim 3 or 4, characterized in that: The first light incident surface and the second light incident surface are planes, the first light emitting surface and the second light emitting surface are curved surfaces, and the curvature radius of the second light emitting surface is greater than the curvature radius of the first light emitting surface.

6. The optical module according to claim 1, characterized in that: The optical coupling module includes at least one coupling lens, and the coupling lens includes: A light receiving surface, arranged at a side close to the optical collimation module, for receiving the detection light after the incident angle is reduced; The focusing surface is arranged at a side away from the optical collimation module, and is used for focusing the detection light after the exit angle is reduced.

7. The optical module according to claim 6, characterized in that: The number of the coupling lenses in the optical coupling module is odd.

8. The optical module according to claim 1, characterized in that: The optical receiving module comprises: The optical fiber bundle receiving surface includes a plurality of optical fibers, is arranged at the convergence position of the detection light, and is used to receive the converged detection light and transmit the detection light to the area to be detected.

9. The optical module according to claim 8, characterized in that: The optical fiber bundle receiving surface comprises: A plastic package is used to package the multiple optical fibers.

10. A jaundice detection device, characterized in that: include: The optical module according to any one of claims 1 to 9, used to generate detection light and irradiate the detection light to an area to be detected; A photoelectric detector, used for receiving the reflected light obtained after the detection light is absorbed and scattered by the to-be-detected area, and outputting the light intensity of the reflected light; A control calculation module is electrically connected to the optical module and the photodetector, and is used to control the emission and shutdown of the optical module, and to determine the transcutaneous bilirubin concentration of the area to be detected according to the light intensity detected by the photodetector.

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