Blue light blanket generating device

Abstract

The utility model provides a blue light blanket generating device which comprises a blue light source, a collimating lens group, a focusing lens group, an optical fiber tube and a light leakage blanket, light beams emitted by the blue light source are sequentially transmitted to pass through the collimating lens group, the focusing lens group, the optical fiber tube and the light leakage blanket and are leaked from the light leakage blanket, and the projection of the light beams leaked from the light leakage blanket is in a blanket shape. By designing an optical system formed by combining a collimating lens group and a focusing lens group in the blue light blanket generating device, light beams emitted by a blue light source can be collimated and focused, so that the light emitting angle of the blue light source can be narrowed into an optical fiber tube, the diameter of the optical fiber tube can be set to be smaller, and the cost is reduced; in addition, the optical system formed by combining the collimating lens group and the focusing lens group can be used for dodging, so that the irradiation intensity of the light beams leaked by the light leakage blanket is more uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of jaundice treatment devices, in particular to a blue light blanket generating device. Background Art

[0002] Blue light is a relatively simple and effective method for treating neonatal jaundice. Among them, a blue light blanket can be wrapped for treatment, increasing the irradiation area and achieving rapid jaundice reduction, which is a better treatment device.

[0003] In the related art, a blue light blanket generating device generally includes a light source, an optical fiber hose, and a light leakage blanket. The blue light emitted by the light source is transmitted to the light leakage blanket through the optical fiber hose. However, since the light emitting angle of the light source emitting blue light is generally large, an optical fiber hose with a larger diameter is required to transmit the blue light beam, resulting in a higher cost. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a blue light blanket generating device, aiming to solve the problem that in the related art, an optical fiber hose with a larger diameter is required to transmit the blue light beam in the blue light blanket generating device.

[0005] To solve the above technical problem, the utility model provides a blue light blanket generating device, including: a blue light source, a collimating lens group, a focusing lens group, an optical fiber tube, and a light leakage blanket. The beam emitted by the blue light source is sequentially transmitted through the collimating lens group, the focusing lens group, the optical fiber tube, and the light leakage blanket, and leaks on the light leakage blanket. The projection of the beam leaking from the light leakage blanket is in the shape of a blanket.

[0006] Optionally, the collimating lens group includes a first plano-convex lens and a second plano-convex lens. The blue light source, the first plano-convex lens, and the second plano-convex lens are sequentially arranged, and the surfaces of the first plano-convex lens and the second plano-convex lens away from the blue light source are both convex surfaces.

[0007] Optionally, the beam projected by the focusing lens group satisfies the following conditions:

[0008] NA≥sinθ;

[0009] Wherein, NA is the numerical aperture of the optical fiber tube, and θ is the angle at which the beam projected by the focusing lens group enters the optical fiber tube.

[0010] Optionally, the spot diameter of the beam projected by the focusing lens group onto the optical fiber tube is greater than or equal to the diameter of the optical fiber tube.

[0011] Optionally, the focusing lens group includes a third plano-convex lens, and the surface of the third plano-convex lens close to the collimating lens group is a convex surface.

[0012] Optionally, the focal length of the third plano-convex lens is equal to the distance between the fiber optic tube and the third plano-convex lens.

[0013] Optionally, the light leakage blanket is woven from a fiber optic bundle and a fabric thread. The light beam transmitted within the fiber optic bundle can leak from the circumferential surface, and the fabric thread is wrapped around the circumferential surface of the fiber optic bundle.

[0014] Optionally, in the direction away from the fiber optic tube, more light beams leak from the circumferential surface of the fiber optic bundle.

[0015] Optionally, the blue light source is provided with a plurality of sub-light sources, the light leakage blanket is provided with a plurality of the fiber optic bundles, and the light beams emitted by the plurality of sub-light sources are respectively transmitted into the plurality of fiber optic bundles.

[0016] Optionally, in the direction away from the fiber optic tube, the surface roughness of the fiber optic bundle decreases in a gradient manner.

[0017] Compared with the related art, a blue light blanket generating device in the present utility model has the beneficial effects that: by designing an optical system composed of a collimating lens group and a focusing lens group in the blue light blanket generating device, the light beam emitted by the blue light source can be collimated and focused, so that the emission angle of the blue light source can be narrowed and enter the fiber optic tube, enabling the diameter of the fiber optic tube to be set smaller, reducing costs; moreover, the optical system composed of the collimating lens group and the focusing lens group can perform light homogenization, making the irradiation intensity of the light beams leaking from the light leakage blanket more uniform. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the related art, the following will briefly introduce the drawings required for use in the description of the embodiments or the related art. Obviously, the following drawings are only some embodiments of the present utility model, and those skilled in the art can obtain other drawings based on these drawings without creative efforts.

[0019] Figure 1 is a schematic diagram of a blue light blanket optical system generating device provided by an embodiment of the present utility model;

[0020] Figure 2 is a schematic diagram of the simulation effect of the spot size under the 80% illuminance line and the 10% illuminance line in an embodiment of the present utility model;

[0021] Figure 3 is a schematic diagram of the simulation effect of the light intensity at different spot positions in an embodiment of the present utility model;

[0022] Figure 4 is a spot output angle distribution diagram in an embodiment of the present utility model.

[0023] In the accompanying drawings, each reference numeral represents: 1, a blue light source; 2, a collimating lens group; 21, a first plano-convex lens; 22, a second plano-convex lens; 3, a third plano-convex lens; 4, an optical fiber tube. Detailed implementation manners

[0024] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0026] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" and "several" mean two or more, unless otherwise specifically defined.

[0027] Embodiment:

[0028] Please refer to Figure 1 , an embodiment of the present invention provides a blue light blanket generating device, including: a blue light source 1, a collimating lens group 2, a focusing lens group, an optical fiber tube 4, and a light leakage blanket (not shown in the figure). The light beam emitted by the blue light source 1 is sequentially transmitted through the collimating lens group 2, the focusing lens group, the optical fiber tube 4, and the light leakage blanket, and leaks in the light leakage blanket. The projection of the light beam leaked by the light leakage blanket is in the shape of a blanket.

[0029] By designing an optical system composed of a collimating lens group 2 and a focusing lens group inside the blue light blanket generating device, the light beam emitted by the blue light source 1 can be collimated and focused. As a result, the emission angle of the blue light source 1 can be narrowed to enter the optical fiber tube 4, enabling the diameter of the optical fiber tube 4 to be set smaller, reducing costs. Moreover, the optical system composed of the collimating lens group 2 and the focusing lens group can perform light homogenization, making the irradiation intensity of the light beam leaked from the light leakage blanket more uniform.

[0030] The collimating lens group 2 includes a first plano-convex lens 21 and a second plano-convex lens 22. The blue light source 1, the first plano-convex lens 21, and the second plano-convex lens 22 are arranged in sequence. The surfaces of the first plano-convex lens 21 and the second plano-convex lens 22 away from the blue light source 1 are both convex, and the surfaces of the first plano-convex lens 21 and the second plano-convex lens 22 close to the blue light source 1 are both flat, so as to enable the collimating lens group 2 to collimate the light beam.

[0031] In order to achieve light homogenization while also narrowing the emission angle, the light beam projected by the focusing lens group satisfies the following conditions:

[0032] NA≥sinθ;

[0033] Wherein, NA is the numerical aperture of the optical fiber tube 4, and θ is the angle at which the light beam projected by the focusing lens group enters the optical fiber tube 4. θ can be 1°, 3°, 5°, -1°, -3°, -5°, etc. The spot diameter of the light beam projected by the focusing lens group onto the optical fiber tube 4 is greater than or equal to the diameter of the optical fiber tube 4 to ensure that sufficient light beam enters the optical fiber, thereby ensuring the illumination intensity of the light beam leaked from the light leakage blanket.

[0034] The focusing lens group includes a third plano-convex lens 3. The surface of the third plano-convex lens 3 close to the collimating lens group 2 is convex, and the surface of the third plano-convex lens 3 away from the collimating lens group 2 is flat. The focal length of the third plano-convex lens 3 is equal to the distance between the optical fiber tube 4 and the third plano-convex lens 3, so that the light beam projected by the third plano-convex lens 3 enters the optical fiber tube 4 with the smallest spot diameter, which is conducive to reducing the diameter of the optical fiber tube 4.

[0035] Please refer to Figure 2 , Figure 3 and Figure 4 , Figure 2 where the inner circle is the spot size under 80% of the central illuminance, the outer circle is the spot size under 10% of the central illuminance, and the final uniformity reaches more than 0.8 (the ratio of the inner circle diameter to the outer circle diameter). The center of the figure is the isophote distribution under the maximum illuminance of 100%; Figure 3 where the horizontal axis is the spot size, the vertical axis is the illumination intensity, Horizontal is the Y direction of the projection plane of the light beam leaked from the light leakage blanket, Vertical is the X direction of the projection plane of the light beam leaked from the light leakage blanket, combined withFigure 2 and Figure 3 It can be seen that the irradiation intensity uniformity of the light leakage blanket is relatively high; Figure 4 The horizontal axis is the emission angle of the blue light source 1, and the vertical axis is the light intensity. It can be seen from the figure that the emission angle of the blue light source 1 is narrowed.

[0036] The light leakage blanket is woven by optical fiber bundles and fabric wires. The light beam transmitted in the optical fiber bundles can leak from the circumferential side surface to form a blanket-shaped projection; the fabric wires are wrapped on the circumferential side surface of the optical fiber bundles to improve the comfort when the light leakage blanket is wrapped around the human body. Specifically, the surface of the optical fiber bundles can be polished to wear the cladding of the optical fiber bundles to achieve the leakage of the light beam in the optical fiber bundles; the weaving method can be knitting, weaving, and / or winding, etc.

[0037] The light intensity at the interface where the light leakage blanket is connected to the optical fiber tube 4 is the highest, and in the direction away from the optical fiber tube 4, the light intensity gradually decreases. In order to ensure the uniformity of the light intensity of the light beam leaked by the light leakage blanket, in the direction away from the optical fiber tube 4, the more the light beam leaks from the circumferential side surface of the optical fiber bundles, the smaller the surface roughness of the optical fiber bundles decreases in a gradient. It should be understood that the more the light beam leaks from the circumferential side surface of the optical fiber bundles, the stronger the light intensity; the smaller the surface roughness of the optical fiber bundles, the less the light beam is absorbed and the more the light beam is reflected.

[0038] In some embodiments, the blue light source 1 is provided with a plurality of sub-light sources, and the light leakage blanket is provided with a plurality of optical fiber bundles. The light beams emitted by the plurality of sub-light sources are transmitted into the plurality of optical fiber bundles one by one. Thus, by controlling the input current magnitude of each sub-light source and the number of optical fiber bundles, the light intensity of the light beam leaked by the light leakage blanket can be adjusted, so as to facilitate adjustment to the required treatment radiation light intensity. According to actual needs, the optical fiber bundles of the light leakage blanket can be stacked.

[0039] The blue light source 1 includes an LED light source. Compared with a halogen light source, the LED light source is a cold light source, while the halogen light source may produce some side effects during use, and it is necessary to generate a wavelength between 400 - 550 nm through grating filtering during use. The cold light source has almost no side effects and has a better curative effect.

[0040] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A blue light blanket generating device, characterized in that, Comprising: A blue light source, a collimating lens group, a focusing lens group, an optical fiber tube, and a light-leaking blanket. The light beam emitted by the blue light source is sequentially transmitted through the collimating lens group, the focusing lens group, the optical fiber tube, and the light-leaking blanket, and leaks on the light-leaking blanket. The projection of the light beam leaked by the light-leaking blanket is in the shape of a blanket.

2. The blue light blanket generating device according to claim 1, characterized in that, The collimating lens group includes a first plano-convex lens and a second plano-convex lens. The blue light source, the first plano-convex lens, and the second plano-convex lens are sequentially arranged, and the surfaces of the first plano-convex lens and the second plano-convex lens away from the blue light source are both convex surfaces.

3. The blue light blanket generating device according to claim 1, characterized in that, The light beam projected by the focusing lens group satisfies the following conditions: NA≥sinθ; Wherein, NA is the numerical aperture of the optical fiber tube, and θ is the angle at which the light beam projected by the focusing lens group enters the optical fiber tube.

4. The blue light blanket generating device according to claim 3, characterized in that, The spot diameter of the light beam projected by the focusing lens group onto the optical fiber tube is greater than or equal to the diameter of the optical fiber tube.

5. The blue light blanket generating device according to claim 3, characterized in that, The focusing lens group includes a third plano-convex lens. The surface of the third plano-convex lens close to the collimating lens group is a convex surface.

6. The blue light blanket generating device according to claim 5, wherein, The focal length of the third plano-convex lens is equal to the distance between the optical fiber tube and the third plano-convex lens.

7. The blue light blanket generating device according to claim 1, characterized in that, The light-leaking blanket is woven from optical fiber bundles and fabric threads. The light beam transmitted in the optical fiber bundles can leak from the circumferential surface, and the fabric threads are wrapped around the circumferential surface of the optical fiber bundles.

8. The blue light blanket generating device according to claim 7, characterized in that, In the direction away from the optical fiber tube, more light beams leak from the circumferential surface of the optical fiber bundles.

9. The blue light blanket generating device according to claim 7, characterized in that, The blue light source is provided with a plurality of sub-light sources, and the light-leaking blanket is provided with a plurality of the optical fiber bundles. The light beams emitted by the plurality of sub-light sources are respectively transmitted into the plurality of optical fiber bundles.

10. The blue light blanket generating device according to claim 7, wherein, In the direction away from the optical fiber tube, the surface roughness of the optical fiber bundles decreases in a gradient manner.

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