CN216310551U - Window cover plate for optical detection of heart rate for watch - Google Patents
Window cover plate for optical detection of heart rate for watch Download PDFInfo
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- CN216310551U CN216310551U CN202122801416.1U CN202122801416U CN216310551U CN 216310551 U CN216310551 U CN 216310551U CN 202122801416 U CN202122801416 U CN 202122801416U CN 216310551 U CN216310551 U CN 216310551U
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- cover plate
- heart rate
- sapphire
- watch
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Abstract
The utility model discloses a window cover plate for optically detecting heart rate for a watch, which comprises a cover plate main body, wherein a cover plate window for placing a sapphire lens is formed in the middle of the cover plate main body, and the cover plate main body embedded with the sapphire lens is connected with a watch dial shell of the watch; the sapphire lens comprises a sapphire body, wherein an ink layer is silk-printed on one surface, which is not in contact with a human body, of the sapphire body, and a plurality of uniformly distributed window holes are patterned on the ink layer; the window hole in the middle is provided with a Fresnel film, and the Fresnel film is provided with a shading foam which has the same shape as the Fresnel film and is larger than the Fresnel film in size. The window cover plate is provided with the optical lens which has high light gathering performance, high hardness and accurate imaging, and the heart rate measurement accuracy is high.
Description
Technical Field
The utility model relates to a window cover plate, in particular to a window cover plate for optically detecting a heart rate for a watch, and belongs to the technical field of watch window cover plates.
Background
Heart rate measurement is the most common health monitoring function of smartwatches. The intelligent watch measures the heart rate by adopting a photoplethysmography (PPG) through a photoelectric sensor, and most of the intelligent watches carry the function at present.
Therefore, the optical window for the health monitoring sensor is one of the national neck card technologies. In order to ensure the heart rate measurement precision, the optical window is required to have ultrahigh light gathering property, superhard optical window and accurate imaging, the production technology has high process difficulty, and domestic fresh manufacturers can realize batch production.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a window cover plate for optically detecting the heart rate for a watch, which is provided with an optical lens with high light gathering performance, high hardness and accurate imaging and has high heart rate measurement accuracy.
In order to achieve the purpose, the technical scheme adopted by the utility model is that the window cover plate for the optical detection of the heart rate for the watch comprises a cover plate main body, wherein a cover plate window for placing a sapphire lens is formed in the middle of the cover plate main body, and the cover plate main body embedded with the sapphire lens is connected with a watch dial shell of the watch; the sapphire lens comprises a sapphire body, wherein an ink layer is silk-printed on one surface, which is not in contact with a human body, of the sapphire body, and a plurality of uniformly distributed window holes are patterned on the ink layer; the window hole in the middle is provided with a Fresnel film, and the Fresnel film is provided with a shading foam which has the same shape as the Fresnel film and is larger than the Fresnel film in size.
Preferably, the viewing window holes are divided into a spectrum collection viewing window hole and a spectrum emission viewing window hole, the spectrum emission viewing window hole is positioned in the center of the sapphire body, the window hole pattern of the spectrum emission viewing window hole is removed by laser, the window hole pattern of the spectrum collection viewing window hole is removed by laser, and the positions of the spectrum collection viewing window hole are distributed on the periphery of the spectrum emission viewing window hole.
The window apron of this patent comes the green glow that high focus LED sent through the fresnel film, and the green glow is sent from spectrum emission window hole, sees through skin tissue reflection back as the green glow and gathers by spectrum collection window hole and gather, reflects photosensitive sensor, and photosensitive sensor accepts and truns into digital signal with the signal of telecommunication into, analyzes human rhythm of the heart change.
In this patent, the measuring beam of fei nieer membrane transmission to LED focuses on, makes the bright value concentrate more, has improved rhythm of the heart test accuracy, simultaneously, can shield the inside emitting diode of wrist-watch, improves the feel.
Meanwhile, the sapphire lens has high hardness, and the mode hardness of 9H is second to that of diamond. For a high-precision measurement window, if the window is scratched, the radiation and the reception of measurement light are affected, and therefore the accuracy of a heart rate test result is affected. The above-mentioned problem does not occur with the lens using sapphire.
Preferably, the window size of the light shielding foam is larger than that of the Fresnel film, and the inner edge of the light shielding foam is closely attached to the outer edge of the Fresnel film.
Preferably, the viewing window holes are circular holes, rectangular holes, square holes, elliptical holes or kidney-shaped holes. The window holes are designed according to actual requirements, and rectangular shapes are preferably selected in the patent and are subjected to chamfering treatment.
Preferably, the shading foam is black shading foam.
The black shading foam is mainly used for preventing light crosstalk, namely light emitted by the spectrum emission window hole is isolated from the spectrum collection window hole which is used for receiving the light around, and the light which does not enter the skin is prevented from being captured by the spectrum collection window hole, so that the heart rate test accuracy is influenced.
Preferably, the silk-screen printing ink layer of the window hole is removed through an ultraviolet nanosecond laser machine, and a graphical window hole is obtained.
Preferably, the ink layers are two layers, the thickness of the ink layers is 10-15 mu m, the mesh number of the screen printing plate is 400 meshes, the ink layer with the parameter has the best effect, and the light shielding performance of the two ink layers is better.
The utility model has the beneficial effects that: this patent adopts the sapphire to do the lens of optical window, and its hardness is high, and mode hardness 9H is only inferior to the diamond, can not influence the accuracy of heart rate test result because of appearing the fish tail. And the sapphire has high heat conduction coefficient, and can be used as a temperature sensor besides the function of a protective cover plate. The two layers of printing ink have better shading performance, the precision of the window hole patterned by laser is higher, the deviation of the measuring result is smaller and can reach +/-0.03 mm, and the traditional screen printing is +/-0.08 mm. The measuring beam of this patent is focused on to the fresnel membrane of LED transmission, makes the bright value concentrate more, has improved rhythm of the heart test accuracy, simultaneously, can shield the inside emitting diode of wrist-watch, improves the feel.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiment or the prior art will be briefly described below.
FIG. 1 is a schematic structural diagram of a cover plate body according to the present invention;
FIG. 2 is a schematic structural diagram of the cover plate body according to the present invention;
FIG. 3 is an assembled view of the cover plate body and sapphire lens of the present invention;
FIG. 4 is a schematic structural view of a sapphire lens, a Fresnel film and a light-shielding foam;
FIG. 5 is a schematic structural diagram of a sapphire lens;
in the figure: 1. the solar cell comprises a cover plate main body, 2 sapphire lenses, 21 sapphire bodies, 22 ink layers, 23 viewing windows, 23a spectrum collection viewing windows, 23b spectrum emission viewing windows, 3 cover plate windows, 4 Fresnel films and 5 shading foam.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the present application will be clearly and completely described below with reference to the embodiments.
As shown in fig. 1-5, the utility model discloses a window cover plate for optical heart rate detection for a watch, which comprises a cover plate main body 1, wherein a cover plate window 3 for placing a sapphire lens 2 is arranged in the middle of the cover plate main body 1, and the cover plate main body 1 embedded with the sapphire lens 2 is connected with a watch dial shell; the sapphire lens 2 comprises a sapphire body 21, an ink layer 22 is silk-printed on one surface of the sapphire body 21, which is not in contact with a human body, and a plurality of viewing holes 23 which are uniformly distributed are patterned on the ink layer 22; a Fresnel film 4 is arranged on the window hole in the middle, and a shading foam 5 which has the same shape as the Fresnel film and is larger than the Fresnel film in size is arranged on the Fresnel film.
The viewing window hole 23 is divided into a spectrum collection viewing window hole 23a and a spectrum emission viewing window hole 23b, the spectrum emission viewing window hole 23b is located at the center of the sapphire body 1, the window hole pattern of the spectrum emission viewing window hole 23b is removed by laser, and the window hole pattern of the spectrum collection viewing window hole 23a is removed by laser and is distributed on the periphery of the spectrum emission viewing window hole.
The window apron of this patent comes the green glow that high focus LED sent through fei nieer membrane 4, and the green glow is sent from spectrum emission window hole, sees through the skin tissue reflection back as the green glow and gathers by spectrum collection window hole, reflects photosensitive sensor, and photosensitive sensor accepts and truns into digital signal with the signal of telecommunication, analyzes human rhythm of the heart change.
In this patent, the measuring beam of fei nieer membrane transmission to LED focuses on, makes the bright value concentrate more, has improved rhythm of the heart test accuracy, simultaneously, can shield the inside emitting diode of wrist-watch, improves the feel.
Meanwhile, the sapphire lens has high hardness, and the mode hardness of 9H is second to that of diamond. For a high-precision measurement window, if the window is scratched, the radiation and the reception of measurement light are affected, and therefore the accuracy of a heart rate test result is affected. The above-mentioned problem does not occur with the lens using sapphire.
The size of the window of the shading foam 5 is larger than that of the window of the Fresnel film 4, and the inner edge of the shading foam is tightly attached to the outer edge of the Fresnel film.
The viewing window holes 23 are circular holes, rectangular holes, square holes, elliptical holes or kidney-shaped holes. The window holes are designed according to actual requirements, and rectangular shapes are preferably selected in the patent and are subjected to chamfering treatment.
The shading foam 5 is black shading foam. The black shading foam is mainly used for preventing light crosstalk, namely light emitted by the spectrum emission window hole is isolated from the spectrum collection window hole which is used for receiving the light around, and the light which does not enter the skin is prevented from being captured by the spectrum collection window hole, so that the heart rate test accuracy is influenced.
And the window hole 23 is used for removing the silk-screen printing ink layer through an ultraviolet nanosecond laser machine and obtaining a graphical window hole.
The ink layer 22 is two layers, the thickness of the ink layer is 10-15 mu m, the mesh number of the screen printing plate is 400 meshes, the ink layer with the parameters has the best effect, and the two ink layers have better shading performance.
This patent adopts the sapphire to do the lens of optical window, and its hardness is high, and mode hardness 9H is only inferior to the diamond, can not influence the accuracy of heart rate test result because of appearing the fish tail. And the sapphire has high heat conduction coefficient, and can be used as a temperature sensor besides the function of a protective cover plate. The two layers of printing ink have better shading performance, the precision of the window hole patterned by laser is higher, the deviation of the measuring result is smaller and can reach +/-0.03 mm, and the traditional screen printing is +/-0.08 mm. The measuring beam of this patent is focused on to the fresnel membrane of LED transmission, makes the bright value concentrate more, has improved rhythm of the heart test accuracy, simultaneously, can shield the inside emitting diode of wrist-watch, improves the feel. The described embodiments are only some embodiments of the utility model, not all embodiments.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (7)
1. A window cover plate for optically detecting a heart rate for a watch is characterized by comprising a cover plate main body (1), wherein a cover plate window (3) for placing a sapphire lens (2) is formed in the middle of the cover plate main body (1), and the cover plate main body (1) embedded with the sapphire lens (2) is connected with a watch dial shell of the watch; the sapphire lens (2) comprises a sapphire body (21), an ink layer (22) is silk-printed on one surface, which is not in contact with a human body, of the sapphire body (21), and a plurality of viewing windows (23) which are uniformly distributed are patterned on the ink layer (22); a Fresnel film (4) is arranged on the viewing window hole (23) in the middle, and a shading foam (5) which has the same shape as the Fresnel film (4) and is larger than the Fresnel film (4) in size is arranged on the Fresnel film (4).
2. The window cover for optically detecting a heart rate for a wristwatch according to claim 1, wherein said viewing window (23) is divided into a spectrum collection viewing window (23a) and a spectrum emission viewing window (23b), said spectrum emission viewing window (23b) is located at a central position of the sapphire body (21), and a window pattern thereof is removed by laser, and said spectrum collection viewing window (23a) has a window pattern thereof removed by laser and is located at a position distributed on an outer periphery of the spectrum emission viewing window (23 b).
3. The window cover for optical detection of heart rate for a wristwatch according to claim 2, characterized in that the window size of the light-shielding foam (5) is larger than the window size of the fresnel film (4) and that the inner edge of the light-shielding foam (5) fits closely to the outer edge of the fresnel film (4).
4. The window cover for a wristwatch that optically detects a heart rate according to claim 3, wherein the shape of the viewing window hole (23) is a circular hole, a rectangular hole, a square hole, an elliptical hole, or a kidney-shaped hole.
5. The window cover for optical detection of heart rate for a watch according to claim 3, characterized in that said black light-shielding foam (5) is a black light-shielding foam.
6. The window cover for optical detection of heart rate for watches according to claim 1, characterized in that said viewing window (23) is obtained by removing the silk-screened ink layer (22) by means of a uv nanosecond laser machine and obtaining a patterned window.
7. The window cover for optical detection of heart rate for watches according to claim 1, characterized in that said ink layer (22) is two-layered and has a thickness of 10-15 μm and a mesh number of 400 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122801416.1U CN216310551U (en) | 2021-11-16 | 2021-11-16 | Window cover plate for optical detection of heart rate for watch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122801416.1U CN216310551U (en) | 2021-11-16 | 2021-11-16 | Window cover plate for optical detection of heart rate for watch |
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| Publication Number | Publication Date |
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| CN216310551U true CN216310551U (en) | 2022-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122801416.1U Active CN216310551U (en) | 2021-11-16 | 2021-11-16 | Window cover plate for optical detection of heart rate for watch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024083023A1 (en) * | 2022-10-21 | 2024-04-25 | 华为技术有限公司 | Processing method for fresnel membrane, fresnel membrane, ppg module and electronic device |
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2021
- 2021-11-16 CN CN202122801416.1U patent/CN216310551U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024083023A1 (en) * | 2022-10-21 | 2024-04-25 | 华为技术有限公司 | Processing method for fresnel membrane, fresnel membrane, ppg module and electronic device |
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