Smart watch blood oxygen glass lens

Abstract

The utility model relates to an intelligent watch blood oxygen glass lens which comprises a glass lens body and an anti-reflection film arranged on a first face of the glass lens body, the anti-reflection film comprises at least two silicon dioxide film layers and at least one silicon nitride film layer, the silicon dioxide film layers and the silicon nitride film layers are sequentially and alternately stacked, and the silicon dioxide film layers and the silicon nitride film layers are arranged on a second face of the glass lens body. And a silicon dioxide film layer is connected with the glass lens body. The blood oxygen detector is high in light transmittance and beneficial to blood oxygen detection.

Description

Technical Field

[0001] The utility model relates to the technical field of smart watches, and in particular to a blood oxygen glass lens for a smart watch. Background Art

[0002] In order to meet people's needs for daily health monitoring, many smart watches have integrated health detection components, such as blood oxygen sensors, which generally include photoelectric tubes and light-emitting tubes. When blood flows through the sensor, the hemoglobin in the blood will absorb the red light and infrared light emitted by the light-emitting tube. The reflected light is received by the photoelectric tube, and after algorithm conversion, blood oxygen saturation and other indicators can be obtained. In order to ensure light penetration and waterproof and dustproof, the back cover of smart watches is usually set as a glass cover. However, when light shines on the glass, reflection occurs, which affects the accuracy of blood oxygen detection. Utility Model Content

[0003] The utility model aims to provide a smart watch blood oxygen glass lens, which has high light transmittance and is conducive to blood oxygen detection.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A smart watch blood oxygen glass lens comprises a glass lens body and an anti-reflection film arranged on the first surface of the glass lens body, the anti-reflection film comprises at least two silicon dioxide film layers and at least one silicon nitride film layer, the silicon dioxide film layers and the silicon nitride film layers are alternately stacked in sequence, and the silicon dioxide film layer is connected to the glass lens body.

[0006] The total number of silicon dioxide film layers is one more than the total number of silicon nitride film layers.

[0007] The silicon dioxide film layer is provided with four layers, and the silicon nitride film layer is provided with three layers.

[0008] The four silicon dioxide film layers are defined as the first silicon dioxide film layer, the second silicon dioxide film layer, the third silicon dioxide film layer and the fourth silicon dioxide film layer in the direction away from the glass lens body, and the three silicon nitride film layers are defined as the first silicon nitride film layer, the second silicon nitride film layer and the third silicon nitride film layer in the direction away from the glass lens body, the thickness of the first silicon dioxide film layer is 150-156nm, the thickness of the second silicon dioxide film layer is 27-33nm, the thickness of the third silicon dioxide film layer is 7-13nm, the thickness of the fourth silicon dioxide film layer is 84-91nm, the thickness of the first silicon nitride film layer is 10-16nm, the thickness of the second silicon nitride film layer is 6-12nm, and the thickness of the third silicon nitride film layer is 130-136nm.

[0009] The glass lens body also includes an ink layer, wherein the ink layer is disposed on the second surface of the glass lens body, and the first surface and the second surface of the glass lens body are in opposite directions.

[0010] After adopting the above scheme, an anti-reflection film is set on the first surface of the glass lens body, and the silicon dioxide film layer and silicon nitride film layer in the anti-reflection film can effectively reduce the reflection of light, thereby improving the transmittance of light. The light transmittance of the utility model can reach more than 97.5%, the lens has good light transmission effect, and is very beneficial for blood oxygen detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a usage state diagram of the utility model.

[0012] Figure 2 It is a schematic diagram of the utility model.

[0013] Marking Description:

[0014] Glass lens body 10;

[0015] Anti-reflection film 20, first silicon dioxide film layer 21, second silicon dioxide film layer 22, third silicon dioxide film layer 23, fourth silicon dioxide film layer 24, first silicon nitride film layer 25, second silicon nitride film layer 26, third silicon nitride film layer 27;

[0016] Ink layer 30;

[0017] Photodiode 41 , light emitting diode 42 , isolation mounting base 43 . DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0020] The utility model discloses a smart watch blood oxygen glass lens, which is usually used as a back cover of a smart watch. A blood oxygen sensor is generally arranged close to the back cover. The blood oxygen sensor includes a photodiode 41 and a light emitting diode 42. In order to prevent the light emitted by the light emitting diode 42 from directly irradiating the photodiode 41, the photodiode 41 and the light emitting diode 42 are installed using an isolation mounting seat 43. The isolation mounting seat 43 is provided with a plurality of independent mounting holes for installing the photodiode 41 and the light emitting diode 42, such as Figure 1 As shown. Figure 1 In the embodiment, four photodiodes 41 are provided, and the four photodiodes 41 form a square column, and six light-emitting diodes 42 are provided, and two light-emitting diodes 42 are surrounded by the four photodiodes 41, and the two light-emitting diodes 42 are on the diagonal line of the square. The other four light-emitting diodes 42 are provided at the four corners of the square.

[0021] In order to make the light emitted or received by the photodiode 41 and the light emitting diode 42 in the blood oxygen sensor pass through the glass lens better, the utility model provides a smart watch blood oxygen glass lens. Figure 2 As shown, the smart watch blood oxygen glass lens includes a glass lens body 10, an anti-reflection film 20 and an ink layer 30, the anti-reflection film 20 is arranged on the first surface of the glass lens body 10, and the ink layer 30 is arranged on the second surface of the glass lens body 10, and the first surface is opposite to the second surface.

[0022] In this case, the anti-reflection film 20 includes at least two silicon dioxide film layers and at least one silicon nitride film layer, the silicon dioxide film layers and the silicon nitride film layers are alternately stacked in sequence, and the silicon dioxide film layer connected to the glass lens body 10 must be the silicon dioxide film layer. Preferably, the total number of silicon dioxide film layers is one more than the total number of silicon nitride layers. The silicon dioxide film layer and the silicon nitride film layer are stacked by sputtering.

[0023] As a preferred embodiment, the silicon dioxide film layer is provided with four layers, and the silicon nitride film layer is provided with three layers. The four silicon dioxide film layers are sequentially defined as a first silicon dioxide film layer 21, a second silicon dioxide film layer 22, a third silicon dioxide film layer 23 and a fourth silicon dioxide film layer 24 in a direction away from the glass lens body 10, and the three silicon nitride film layers are sequentially defined as a first silicon nitride film layer 25, a second silicon nitride film layer 26 and a third silicon nitride film layer 27 in a direction away from the glass lens body 10. 7, then: the thickness of the first silicon dioxide film layer 21 is 150-156 nm, the thickness of the second silicon dioxide film layer 22 is 27-33 nm, the thickness of the third silicon dioxide film layer 23 is 7-13 nm, the thickness of the fourth silicon dioxide film layer 24 is 84-91 nm, the thickness of the first silicon nitride film layer 25 is 10-16 nm, the thickness of the second silicon nitride film layer 26 is 6-12 nm, and the thickness of the third silicon nitride film layer 27 is 130-136 nm.

[0024] The key to the present invention is that an anti-reflection film 20 is provided on the first surface of the glass lens body 10, and the silicon dioxide film layer and the silicon nitride film layer in the anti-reflection film 20 can effectively reduce the reflection of light, thereby improving the transmittance of light. The light transmittance of the present invention can reach more than 97.5%, the lens has good light transmission effect, and is very beneficial to blood oxygen detection.

[0025] The above description is only an embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A smart watch blood oxygen glass lens, characterized by: It includes a glass lens body and an anti-reflection film arranged on the first surface of the glass lens body, the anti-reflection film includes at least two silicon dioxide film layers and at least one silicon nitride film layer, the silicon dioxide film layers and the silicon nitride film layers are alternately stacked in sequence, and the silicon dioxide film layer is connected to the glass lens body.

2. The smart watch blood oxygen glass lens according to claim 1, characterized in that: The total number of silicon dioxide film layers is one more than the total number of silicon nitride film layers.

3. The smart watch blood oxygen glass lens according to claim 2, characterized in that: The silicon dioxide film layer is provided with four layers, and the silicon nitride film layer is provided with three layers.

4. The smart watch blood oxygen glass lens according to claim 3, characterized in that: The four silicon dioxide film layers are defined as the first silicon dioxide film layer, the second silicon dioxide film layer, the third silicon dioxide film layer and the fourth silicon dioxide film layer in the direction away from the glass lens body, and the three silicon nitride film layers are defined as the first silicon nitride film layer, the second silicon nitride film layer and the third silicon nitride film layer in the direction away from the glass lens body, the thickness of the first silicon dioxide film layer is 150-156nm, the thickness of the second silicon dioxide film layer is 27-33nm, the thickness of the third silicon dioxide film layer is 7-13nm, the thickness of the fourth silicon dioxide film layer is 84-91nm, the thickness of the first silicon nitride film layer is 10-16nm, the thickness of the second silicon nitride film layer is 6-12nm, and the thickness of the third silicon nitride film layer is 130-136nm.

5. The smart watch blood oxygen glass lens according to claim 1, characterized in that: The glass lens body also includes an ink layer, wherein the ink layer is disposed on the second surface of the glass lens body, and the first surface and the second surface of the glass lens body are in opposite directions.

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