CN213787375U - Module is listened to double-colored injection structure rhythm of heart of ultra-thin optics - Google Patents
Module is listened to double-colored injection structure rhythm of heart of ultra-thin optics Download PDFInfo
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- CN213787375U CN213787375U CN202022392956.4U CN202022392956U CN213787375U CN 213787375 U CN213787375 U CN 213787375U CN 202022392956 U CN202022392956 U CN 202022392956U CN 213787375 U CN213787375 U CN 213787375U
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Abstract
The utility model discloses an ultrathin optical double-color injection structure heart rate detection module, which comprises a circuit board, a clapboard, a light-emitting sensor component and a light-receiving sensor component, wherein the ultrathin optical double-color injection structure is arranged above the clapboard, the ultrathin optical double-color injection structure comprises a light-emitting Fresnel lens component and a light-receiving Fresnel lens component, the light-emitting sensor component and the light-receiving Fresnel lens component are arranged correspondingly, the ultrathin optical double-color injection structure is provided with a protective lens which blocks light from penetrating in a local area, the ultrathin optical double-color injection structure and the protective lens are bonded by an adhesive sheet, the module of the utility model corrects the light path, can strengthen the energy of the penetration detection, and reduce the power consumption of the watch detection, more power saving improves heart rate monitoring accuracy simultaneously.
Description
Technical Field
The utility model relates to a dress electronic equipment technical field, in particular to module is listened to two-color injection structure rhythm of heart of ultra-thin optics.
Background
Along with the improvement of people's standard of living, more and more people begin to regard healthy monitoring, accompany the coming of intelligence wearing heat tide simultaneously, and the wisdom wrist-watch on the present market is equipped with heart rate monitor function mostly. One of the heart rate monitoring methods is a reflection type photoelectric method, wherein a light emitting end emits light, a light receiving end receives light reflected by body tissues, and the change of the volume of blood vessels during blood flow is induced through light reflection, so that the heart rate is measured.
The light is LED light, usually in sets of three, including green, red and IR light. The IR light is used for people with dark skin, particularly for black people, the visible light cannot penetrate the skin, the IR light can penetrate a transparent object, the infrared light can reach the hands of people to detect the blood circulation state, and the infrared light is analyzed by a circuit and software to form a curve, namely a change curve of systolic pressure (maximum) and diastolic pressure (minimum), and the curve is compared with a standard electrocardiogram, such as a medical electrocardiogram, because the infrared light is attached to the heart, the infrared light is generally considered to be the most accurate. The higher the measurement accuracy of the smart watch is, the closer the smart watch is to a standard electrocardiogram.
However, in the current smart watch, the light emitted from the light emitting end directly hits on the object to be measured without being converged and collimated, and because the divergence angle of the LED is very large, only a light distribution curve of 120 ° is usually calculated, but actually, the very weak energy still exists between 120 ° and 180 °, the light with large angle forms total reflection in the glass, when the light penetrates out of the glass cover plate, interference occurs, which causes inaccuracy of the system, and only a small part of the light hits on the position to be detected, so the generated signal intensity is weak, resulting in low detection sensitivity and poor reliability.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned defect among the prior art, provide a module is listened to ultra-thin two-color injection structure rhythm of the heart, this module revises the light path, can strengthen the energy of pierce through and listen for the power consumption that the wrist-watch was listened still less, power saving more improves rhythm of the heart monitoring accuracy simultaneously.
In order to achieve the above object, the utility model provides an ultra-thin optical double-color injection molding structure heart rate detection module, which comprises a circuit board, wherein a partition board for separating components is arranged on the circuit board, a light emitting sensor assembly is arranged in the middle of the partition board, light receiving sensor assemblies are arranged around the partition board, the light emitting sensor assembly and the light receiving sensor assemblies are electrically connected with the circuit board, an ultra-thin optical double-color injection molding structure is arranged above the partition board, the ultra-thin optical double-color injection molding structure comprises a light emitting fresnel lens assembly and a light receiving fresnel lens assembly, the light emitting sensor assembly and the light emitting fresnel lens assembly are correspondingly arranged, the light receiving sensor assembly and the light receiving fresnel lens assembly are correspondingly arranged, a protective lens for blocking light from penetrating through a local area is arranged on the ultra-thin optical double-color injection molding structure, the ultrathin optical double-color injection molding structure is bonded with the protective lens through the viscose sheet.
Preferably, the protective lens is a glass lens, a resin lens or a sapphire lens, and an epoxy resin layer for waterproof sealing is arranged around the protective lens and the ultrathin optical double-color injection structure.
Preferably, a glass silk-screen pattern sheet is arranged between the protective lens and the viscose sheet, the thickness of the protective lens is 0.40mm-1.50mm, and an AR (anti-reflection) film with the penetration rate of more than 97% is plated on the surface of the protective lens.
Preferably, the light emitting sensor assembly comprises a first light emitting sensor and a second light emitting sensor, the first light emitting sensor and the second light emitting sensor being diagonally arranged; the light receiving sensor assembly comprises a first light receiving sensor, a second light receiving sensor, a third light receiving sensor and a fourth light receiving sensor which are arranged on the periphery of the partition board; the first light emitting sensor corresponds to a first light receiving sensor and a second light receiving sensor, and the second light emitting sensor corresponds to a third light receiving sensor and a fourth light receiving sensor.
Preferably, the light-emitting fresnel lens assembly includes a first light-emitting fresnel lens and a second light-emitting fresnel lens, the first light-emitting fresnel lens and the second light-emitting fresnel lens are arranged in parallel, the light-receiving fresnel lens assembly includes a first light-receiving fresnel lens, a second light-receiving fresnel lens, a third light-receiving fresnel lens and a fourth light-receiving fresnel lens, the first light-emitting fresnel lens is correspondingly arranged above the first light-emitting sensor, the second light-emitting fresnel lens is correspondingly arranged above the second light-emitting sensor, the first light-receiving fresnel lens is correspondingly arranged above the first light-receiving sensor, the second light-receiving fresnel lens is correspondingly arranged above the second light-receiving sensor, and the third light-receiving fresnel lens is correspondingly arranged above the third light-receiving sensor, the fourth light receiving Fresnel lens is correspondingly arranged above the fourth light receiving sensor.
Preferably, the first light-emitting fresnel lens, the second light-emitting fresnel lens, the first light-receiving fresnel lens, the second light-receiving fresnel lens, the third light-receiving fresnel lens and the fourth light-receiving fresnel lens are polygonal, circular or elliptical, the fresnel texture on the surfaces thereof is designed to be circular, stripe-shaped, field-shaped or cross-shaped, the surfaces thereof are plated with AR antireflection films, and the fresnel textures are PMMA or PC material members.
Preferably, the ultra-thin optical double-color injection structure comprises a main frame, a light-emitting fresnel lens assembly and a light-receiving fresnel lens assembly, the light-emitting fresnel lens assembly and the light-receiving fresnel lens assembly are light-transmitting resin material members, a light-transmitting wave band is between 300nm and 1500nm, the light-transmitting resin material is PC, PMMA, COC or PA12 transparent nylon, the main frame of the ultra-thin optical double-color injection structure is a light-transmitting resin material member, and the ultra-thin optical double-color injection structure is a black PC, PA or PC + ABS material member.
Preferably, an annular protective sleeve is arranged on the outer side of the ultrathin optical double-color injection molding structure, and the protective sleeve is a metal material component;
or the protective sleeve and the ultrathin optical double-shot structure are black PC, PA or PC + ABS material components and are integrally formed through double-shot injection.
Preferably, the surface texture of the first light emission fresnel lens and the second light emission fresnel lens is composed of a plurality of toothed rings, the tooth pitch is uniform, the tooth pitch is 0.005mm-0.15mm, the tooth height gradually increases from the middle to the outside, the tooth height ranges from 0.02mm-0.15mm, the tooth crest angle is 15-92 degrees, and the lens thickness is 0.12mm-0.25 mm:
the surface lines of the first light receiving Fresnel lens, the second light receiving Fresnel lens, the third light receiving Fresnel lens and the fourth light receiving Fresnel lens are composed of a plurality of toothed rings, the tooth pitch is uniform, the tooth pitch is 0.005mm-0.15mm, the tooth height is 0.02mm-0.15mm, the tooth crest angle is 15-92 degrees, and the thickness of the lenses is 0.12mm-0.25 mm.
Preferably, the fresnel textures on the surfaces of the first light-emitting fresnel lens, the second light-emitting fresnel lens, the first light-receiving fresnel lens, the second light-receiving fresnel lens, the third light-receiving fresnel lens and the fourth light-receiving fresnel lens are provided with a plurality of fresnel structures, and the upper and lower surfaces of the lenses are provided with fresnel textures.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. the utility model discloses a be equipped with the fresnel line on light transmission fresnel lens subassembly and light reception fresnel lens subassembly respectively, can revise the light path, reflect and refract the light of transmission and reflection, make dispersed light effectively assemble, improved signal strength, detectivity is high, pierces through the energy of listening through the enhancement for the power consumption that the wrist-watch was listened still less, the power saving more improves the rhythm of the heart monitoring accuracy simultaneously.
2. The utility model discloses having installed glass silk screen printing figure piece between protection lens and viscose piece, can preventing to scurry light, reducing the penetrating through of miscellaneous light, guarantee the passing through of main light source, reduce the interference to main light source, can further improve the sensitivity and the rhythm of the heart monitoring accuracy of surveying.
3. The utility model discloses ultra-thin optics double-colored injection structure, light transmission fresnel lens subassembly and light reception fresnel lens subassembly pass through double-colored injection moulding integrated into one piece, adopt the technology of directly moulding plastics, do not need to install once more, just be integrative after the shaping, have the advantage that need not install, can reduce the cost of labor simultaneously, can improve installation and assembly precision, can improve production efficiency and improve off-the-shelf yields, the assembly is inseparabler, outwards pushes away or inwards pushes away, the lens subassembly all can not break away from.
4. The utility model discloses installed the protection lens, utilized the light source can pass the protection lens, the protection lens has hardness height, antifriction and shock-resistant advantage, the protection lens has smooth feeling with skin contact for the plastic material component more, the comfort is stronger, has improved user experience greatly and has felt, simultaneously because it is inseparabler and the contact surface is bigger with skin contact, is favorable to further improving the sensitivity and the rhythm of the heart monitoring accuracy of surveying.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of an exploded structure of an ultra-thin optical two-color injection molding heart rate detection module provided by the present invention;
fig. 2 is a schematic view of an exploded structure of an ultra-thin optical double-color injection structure of the heart rate detecting module with the ultra-thin optical double-color injection structure, which is provided by the present invention, and a protective sleeve which are assembled together;
FIG. 3 is a top view of the ultra-thin optical bi-color injection structure heart rate detection module provided by the present invention assembled with a protective sheath;
fig. 4 is a schematic diagram of the light path transmitting and receiving of the heart rate detecting module with the ultra-thin optical double-color injection structure provided by the utility model;
fig. 5 is a schematic cross-sectional view of a first light-emitting fresnel lens of the heart rate detecting module with the ultra-thin optical double-color injection molding structure provided by the present invention;
fig. 6 is a schematic cross-sectional view of a first light-receiving fresnel lens of the heart rate detecting module with the ultra-thin optical double-color injection molding structure provided by the present invention;
fig. 7 is a schematic view of convergence of the emitted light of the heart rate detecting module with the ultra-thin optical double-color injection structure provided by the present invention;
fig. 8 is a schematic view of the convergence of the received light of the heart rate detecting module with the ultra-thin optical double-color injection structure provided by the present invention;
fig. 9 is a schematic view of light distribution of the heart rate detecting module with the ultra-thin optical double-color injection molding structure provided by the present invention;
fig. 10 is a schematic view of illuminance distribution received by the surface of the first light receiving sensor of the heart rate detecting module with the ultra-thin optical double-shot structure provided by the present invention;
fig. 11 is a schematic structural view of a first light-receiving fresnel lens of the heart rate detecting module with an ultra-thin optical double-color injection structure, in which fresnel textures are designed to be circular;
fig. 12 is a schematic structural view of a first light-receiving fresnel lens of the heart rate detecting module with an ultra-thin optical double-color injection structure, in which fresnel textures are designed to be stripe shapes;
fig. 13 is a schematic structural view of the first optically receiving fresnel lens of the ultra-thin optical two-color injection molding structure heart rate detection module according to the present invention, which is designed as a polygon;
fig. 14 is a schematic structural view of the first light-emitting fresnel lens of the heart rate detecting module with the ultra-thin optical double-color injection molding structure, wherein fresnel textures are arranged on the upper surface and the lower surface of the first light-emitting fresnel lens;
fig. 15 is a pair of the utility model provides a pair of module is listened to double-colored injection structure rhythm of the heart of ultra-thin optics first light transmission fresnel lens in fresnel texture designs into a plurality of fresnel structure's structural schematic.
The figure includes:
1-circuit board, 2-partition board, 3-light emitting sensor assembly, 4-light receiving sensor assembly, 5-ultrathin optical two-color injection molding structure, 6-light emitting Fresnel lens assembly, 7-light receiving Fresnel lens assembly, 10-protective lens, 8-adhesive film, 9-glass silk-screen pattern film, 31-first light emitting sensor, 32-second light emitting sensor, 41-first light receiving sensor, 42-second light receiving sensor, 43-third light receiving sensor, 44-fourth light receiving sensor, 61-first light emitting Fresnel lens, 62-second light emitting Fresnel lens, 71-first light receiving Fresnel lens, 72-second light receiving Fresnel lens, 73-third light receiving Fresnel lens, 73-light receiving Fresnel lens, 74-fourth light receiving fresnel lens, 11-blood vessel, 51-protective cover.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present embodiment, and it is obvious that the described embodiment is an embodiment of the present invention, not all embodiments. Based on this embodiment in the present invention, all other embodiments obtained by the ordinary skilled person in the art without creative work all belong to the protection scope of the present invention.
Please refer to fig. 1 to 12, the utility model provides a module is listened to two-color injection structure rhythm of heart of ultra-thin optics, including circuit board 1, 1 facial make-up of circuit board is equipped with and lets components and parts carry out divided baffle 2, baffle 2 can keep apart other light emitting component on the circuit board 1, guarantees that the main light source does not receive the interference of other light sources, indirectly improves the sensitivity and the rhythm of the heart monitoring accuracy of surveying.
The middle part of the clapboard 2 is provided with a light-emitting sensor component 3, the light-emitting sensor component 3 is electrically connected with the circuit board 1, the periphery of the clapboard 2 is provided with a light-receiving sensor component 4, the light-receiving sensor component 4 is electrically connected with the circuit board 1,
ultra-thin optics double-colored injection structure 5 has been installed to 2 tops of baffle, include light transmission fresnel lens subassembly 6 and light reception fresnel lens subassembly 7 among the ultra-thin optics double-colored injection structure 5, light emission sensor subassembly 3 sets up with light transmission fresnel lens subassembly 6 is corresponding, light reception sensor subassembly 4 sets up with light reception fresnel lens subassembly 7 is corresponding, the 5 facial make-up of ultra-thin optics double-colored injection structure is equipped with local area and blocks the penetrating protection lens 10 of light, bond by viscose piece 8 between ultra-thin optics double-colored injection structure 5 and the protection lens 10.
Light emitted by the light emission sensor assembly 3 is reflected and refracted by the light emission Fresnel lens assembly 6, and the light is converged on an object to be measured; after being reflected by a measured object, the light rays are received by the light receiving sensor assembly 4 through the reflection and refraction effects of the light receiving Fresnel lens assembly 7.
Light transmission fresnel lens subassembly 6 and light reception fresnel lens subassembly 7 can revise the light path, reflect and refract the light of light and reflection of transmission, make dispersed light effectively assemble, have improved signal strength, and detectivity is high, pierces through the energy of listening through the enhancement for the power consumption that the wrist-watch was listened still less, and the power saving improves the rhythm of the heart monitoring accuracy simultaneously.
A glass silk-screen pattern sheet 9 is arranged between the protective lens 10 and the adhesive sheet 8, the thickness of the protective lens 10 is 0.40mm-1.50mm, the thickness of the protective lens 10 is very important, because the thicker the protective lens 10 is, the poorer the light transmittance is, the thickness of the protective lens 10 in the embodiment is preferably 1.0mm, and the impact resistance and waterproof requirements of the heart rate detection module are met, the surface of the protective lens 10 is plated with an AR antireflection film with a transmittance of more than 97%, because the light needs to pass through the protective lens 10, and the protective lens 10 has a certain thickness, the light enters the protective lens 10 and is reflected to cause stray light, which causes misalignment of the operation of the light receiving sensor assembly 4, so that the surface of the protective lens 10 is plated with an AR antireflection film, the light transmittance can be higher, stray light can be reduced, the light intensity of the light can be enhanced, and the light irradiated on the skin can generate diffuse reflection to the light receiving sensor assembly 4, the sensitivity of light receiving sensor subassembly 4 strengthens to can reduce the emission intensity of light transmitting sensor subassembly 3, reduce current reaches the effect of power saving, makes the stand-by time of wisdom wrist-watch increase.
The light source is utilized to penetrate through the protective lens 10, the protective lens 10 has the advantages of high hardness and friction resistance, the protective lens 10 has smooth hand feeling compared with a plastic material component and skin contact, the comfortable feeling is stronger, the user experience feeling is greatly improved, and meanwhile, the contact surface is larger and is closer to the skin contact, so that the detection sensitivity and the heart rate monitoring accuracy are further improved.
The glass silk-screen pattern piece 9 is arranged between the protective lens 10 and the viscose piece 8, light channeling can be prevented, penetration of stray light is reduced, passing of a main light source is guaranteed, interference to the main light source is reduced, and detection sensitivity and heart rate monitoring accuracy can be further improved.
The light emitting sensor assembly 3 includes a first light emitting sensor 31 and a second light emitting sensor 32, the first light emitting sensor 31 and the second light emitting sensor 32 being diagonally disposed; the light receiving sensor assembly 4 includes a first light receiving sensor 41, a second light receiving sensor 42, a third light receiving sensor 43, and a fourth light receiving sensor 44 mounted on the periphery of the partition board 2; the first light emitting sensor 31 corresponds to the first light receiving sensor 41 and the second light receiving sensor 42, the second light emitting sensor 32 corresponds to the third light receiving sensor 43 and the fourth light receiving sensor 44, and the light source emitting elements in this embodiment have two sets, it is understood that in other embodiments, the light source emitting elements may be provided in multiple sets as needed.
The light emission fresnel lens assembly 6 comprises a first light emission fresnel lens 61 and a second light emission fresnel lens 62, the first light emission fresnel lens 61 and the second light emission fresnel lens 62 are arranged in parallel, the light reception fresnel lens assembly 7 comprises a first light reception fresnel lens 71, a second light reception fresnel lens 72, a third light reception fresnel lens 73 and a fourth light reception fresnel lens 74, the first light emission fresnel lens 61 is correspondingly arranged above the first light emission sensor 31, the second light emission fresnel lens 62 is correspondingly arranged above the second light emission sensor 32, the first light reception fresnel lens 71 is correspondingly arranged above the first light reception sensor 41, the second light reception fresnel lens 72 is correspondingly arranged above the second light reception sensor 42, the third light reception fresnel lens 73 is correspondingly arranged above the third light reception sensor 43, the fourth light receiving fresnel lens 74 is correspondingly disposed above the fourth light receiving sensor 44, and in this embodiment, two light receiving elements are a group, and there are two groups in total.
The first light-emitting fresnel lens 61, the second light-emitting fresnel lens 62, the first light-receiving fresnel lens 71, the second light-receiving fresnel lens 72, the third light-receiving fresnel lens 73, and the fourth light-receiving fresnel lens 74 are polygonal, circular, or elliptical, as shown in fig. 3, the first light-receiving fresnel lens 71 is designed to be circular, as shown in fig. 11 and 12, the first light-receiving fresnel lens 71 is designed to be quadrilateral and rounded with circular arcs, as shown in fig. 13, the first light-receiving fresnel lens 71 is designed to be polygonal and rounded with circular arcs, further, the shape of other embodiments of the lenses can be designed according to practical application conditions, and the light-emitting fresnel lens can be designed to be beautiful, elegant, and aesthetic with ornamental value as much as possible on the premise of ensuring the effect, and the fresnel texture on the surface of the light-emitting fresnel lens can be designed to be circular, elegant, and beautiful, Stripe shape, field font or crisscross shape, as shown in fig. 11, become the fresnel texture design circularly, as shown in fig. 12, become the fresnel texture design stripe shape, according to the utility model discloses a principle can be found out without doubt and can become field font or crisscross shape with the fresnel texture haircut, and its surface has plated the AR antireflection coating, and it is PMMA or PC material component, the lens is thinner more, and the light transmissivity is higher, and the AR antireflection coating has been plated on the lens surface moreover, can further strengthen light emission sensor subassembly 3's light intensity.
The ultrathin optical double-color injection structure 5 consists of a main frame, a light-emitting Fresnel lens assembly 6 and a light-receiving Fresnel lens assembly 7, the light-emitting Fresnel lens assembly 6 and the light-receiving Fresnel lens assembly 7 are light-transmitting resin material components, the light-transmitting wave band is between 300nm and 1500nm, the light-transmitting resin material is PC, PMMA, COC or PA12 transparent nylon, the main frame of the ultrathin optical double-color injection structure 5 is a light-proof resin material component, the light-proof resin material is a common non-transparent plastic material, the ultrathin optical double-color injection structure is integrally formed by double-color injection molding, a direct injection molding process is adopted, secondary installation is not needed, the ultrathin optical double-color injection structure is just integrated after molding, the ultrathin optical double-color injection structure has the advantage of no installation, the labor cost can be reduced, the installation and assembly precision can be improved, the production efficiency and, and the lens assembly cannot be separated when the lens assembly is pushed outwards or inwards, and the ultrathin optical double-color injection structure 5 is a black PC, PA or PC + ABS material component.
An annular protective sleeve 51 is arranged on the outer side of the ultrathin optical two-color injection structure 5, the protective sleeve 51 is a metal material member, and the metal material member is generally a stainless steel material member;
or the protective sleeve 51 and the ultrathin optical two-color injection structure 5 are black PC, PA or PC + ABS material members and are integrally molded by two-color injection.
The surface lines of the first light emitting fresnel lens 61 and the second light emitting fresnel lens 62 are composed of a plurality of toothed rings, the tooth pitch L1 is uniform, the tooth pitch L1 is 0.005mm-0.15mm, in the embodiment, the tooth pitch L1 is preferably 0.1231mm, the tooth height H1 is gradually increased from the middle to the outside, the tooth height H1 ranges from 0.02mm-0.15mm, the tooth crest angle α is 15 ° -92 °, in the embodiment, the tooth crest angle α is preferably 78 °, and the lens thickness H3 is 0.12mm-0.25 mm; in the embodiment, the thickness H3 of the lens is preferably 0.1206mm, and the tooth pitch L1, the tooth height H1 and the tooth crest angle alpha are strictly calculated, so that the reflection and refraction effects of the lens on a light source are better, and the heart rate measuring accuracy is improved.
The surface textures of the first light receiving fresnel lens 71, the second light receiving fresnel lens 72, the third light receiving fresnel lens 73 and the fourth light receiving fresnel lens 74 are composed of a plurality of toothed rings, the tooth pitch L2 is uniform, the tooth pitch L2 is 0.005mm-0.15mm, the tooth pitch L2 is preferably 0.1231mm in the embodiment, the tooth height H2 is in the range of 0.02mm-0.15mm, the tooth height H2 is preferably 0.0301mm in the embodiment, the tooth crest angle β angle is 15 ° -92 °, the tooth crest angle β angle is preferably 68 ° in the embodiment, and the lens thickness H4 is 0.12mm-0.25 mm; the tooth pitch L2, the tooth height H2 and the tooth crest angle beta are strictly calculated, so that the reflection and refraction effects of the lens on a light source are better, and the heart rate measuring accuracy is improved.
As shown in fig. 15, the fresnel patterns on the surfaces of the first light-emitting fresnel lens 61, the second light-emitting fresnel lens 62, the first light-receiving fresnel lens 71, the second light-receiving fresnel lens 72, the third light-receiving fresnel lens 73, and the fourth light-receiving fresnel lens 74 are provided with a plurality of fresnel structures.
As shown in fig. 14, the upper and lower surfaces of the first light-emitting fresnel lens 61, the second light-emitting fresnel lens 62, the first light-receiving fresnel lens 71, the second light-receiving fresnel lens 72, the third light-receiving fresnel lens 73 and the fourth light-receiving fresnel lens 74 are provided with fresnel patterns.
To sum up, the beneficial effects of the utility model reside in that:
the utility model discloses a be equipped with the fresnel line respectively on transmitting fresnel lens subassembly 6 and light receiving fresnel lens subassembly 7, can revise the light path, reflect and refract the light of transmission and the light of reflection, make the scattered light can effectively assemble, improved signal strength, detection sensitivity is high, through the energy of reinforcing to pierce through the detection, make the power consumption that the wrist-watch was listened still less, more power saving, improve the heart rate monitoring accuracy simultaneously; the utility model discloses install glass silk screen printing figure piece 9 between protection lens 10 and viscose piece 8, can prevent scurrying light, reduce the penetration of miscellaneous light, guarantee the passing through of main light source, reduce the interference to the main light source, can further improve the sensitivity of surveying and heart rate monitoring accuracy; the utility model discloses ultra-thin optics double-colored injection structure 5, light transmission Fresnel lens subassembly 6 and light reception Fresnel lens subassembly 7 are through double-colored injection moulding integrated into one piece, adopt the technology of direct injection moulding, do not need to install once more, just are integrative after the shaping, have the advantage that need not install, can reduce the cost of labor simultaneously, can improve installation and assembly precision, can improve production efficiency and improve the yields of finished product, the assembly is tighter, push outward or push inward, the lens subassembly can not break away from; the utility model discloses installed protection lens 10, utilized the light source can pass protection lens 10, protection lens 10 has hardness height and antifriction's advantage, and protection lens 10 has smooth feeling for the plastic material component with skin contact more, and the comfort is stronger, has improved user experience greatly and has felt, simultaneously because it is inseparabler and the contact surface is bigger with skin contact, is favorable to further improving the sensitivity and the rhythm of the heart monitoring accuracy of surveying.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. The utility model provides a module is listened to ultra-thin optics double-colored injection structure rhythm of heart, a serial communication port, including circuit board (1), circuit board (1) facial make-up is equipped with and lets components and parts carry out divided baffle (2), light emitting sensor subassembly (3) have been installed at baffle (2) middle part, light receiving sensor subassembly (4) have been installed all around baffle (2), light emitting sensor subassembly (3) and light receiving sensor subassembly (4) all are connected with circuit board (1) electricity, ultra-thin optics double-colored injection structure (5) have been installed to baffle (2) top, contain light emitting Fresnel lens subassembly (6) and light receiving Fresnel lens subassembly (7) in ultra-thin optics double-colored injection structure (5), light emitting sensor subassembly (3) and light emitting Fresnel lens subassembly (6) correspond the setting, light receiving sensor subassembly (4) and light receiving Fresnel lens subassembly (7) correspond the setting, ultrathin optics double-colored injection structure (5) facial make-up is equipped with local area and blocks light penetrating protection lens (10), bond by gluing piece (8) between ultrathin optics double-colored injection structure (5) and protection lens (10).
2. The heart rate detecting module of claim 1, wherein the protective lens (10) is a glass lens, a resin lens or a sapphire lens, and an epoxy layer for waterproof sealing is disposed around the protective lens (10) and the ultra-thin optical two-color injection structure (5).
3. The heart rate detection module of claim 1, wherein a glass silk-screen pattern sheet (9) is disposed between the protective lens (10) and the adhesive sheet (8), the thickness of the protective lens (10) is 0.40mm-1.50mm, and an AR anti-reflection film with a transmittance greater than 97% is plated on the surface of the protective lens (10).
4. The heart rate detecting module of claim 1, wherein the light emitting sensor assembly (3) comprises a first light emitting sensor (31) and a second light emitting sensor (32), and the first light emitting sensor (31) and the second light emitting sensor (32) are arranged diagonally; the light receiving sensor assembly (4) comprises a first light receiving sensor (41), a second light receiving sensor (42), a third light receiving sensor (43) and a fourth light receiving sensor (44) which are arranged on the periphery of the partition board (2); the first light emitting sensor (31) corresponds to a first light receiving sensor (41) and a second light receiving sensor (42), and the second light emitting sensor (32) corresponds to a third light receiving sensor (43) and a fourth light receiving sensor (44).
5. The heart rate detecting module of claim 4, wherein the light-emitting Fresnel lens assembly (6) comprises a first light-emitting Fresnel lens (61) and a second light-emitting Fresnel lens (62), the first light-emitting Fresnel lens (61) and the second light-emitting Fresnel lens (62) are arranged in parallel, the light-receiving Fresnel lens assembly (7) comprises a first light-receiving Fresnel lens (71), a second light-receiving Fresnel lens (72), a third light-receiving Fresnel lens (73) and a fourth light-receiving Fresnel lens (74), the first light-emitting Fresnel lens (61) is correspondingly arranged above the first light-emitting sensor (31), the second light-emitting Fresnel lens (62) is correspondingly arranged above the second light-emitting sensor (32), the first light receiving Fresnel lens (71) is correspondingly arranged above the first light receiving sensor (41), the second light receiving Fresnel lens (72) is correspondingly arranged above the second light receiving sensor (42), the third light receiving Fresnel lens (73) is correspondingly arranged above the third light receiving sensor (43), and the fourth light receiving Fresnel lens (74) is correspondingly arranged above the fourth light receiving sensor (44).
6. The heart rate detection module of claim 5, wherein the first light-emitting Fresnel lens (61), the second light-emitting Fresnel lens (62), the first light-receiving Fresnel lens (71), the second light-receiving Fresnel lens (72), the third light-receiving Fresnel lens (73) and the fourth light-receiving Fresnel lens (74) are polygonal, circular or elliptical, the Fresnel texture on the surface of the Fresnel lens is designed to be circular, stripe-shaped, field-shaped or cross-shaped, the surface of the Fresnel lens is plated with an AR (anti-reflection) film, and the Fresnel texture is a PMMA or PC (Poly methyl methacrylate) material component.
7. The heart rate detecting module according to claim 1, wherein the ultra-thin optical bi-color injection structure (5) comprises a main frame, a light-emitting fresnel lens assembly (6) and a light-receiving fresnel lens assembly (7), the light-emitting fresnel lens assembly (6) and the light-receiving fresnel lens assembly (7) are light-transmitting resin material members, a light-transmitting waveband is between 300nm and 1500nm, the light-transmitting resin material is PC, PMMA, COC or PA12 transparent nylon, the main frame of the ultra-thin optical bi-color injection structure (5) is a light-opaque resin material member, and the ultra-thin optical bi-color injection structure (5) is a black PC, PA or PC + ABS material member.
8. The heart rate detecting module of an ultra-thin optical bi-color injection structure according to claim 1, wherein an annular protective sleeve (51) is installed outside the ultra-thin optical bi-color injection structure (5), and the protective sleeve (51) is a metal material member;
or the protective sleeve (51) and the ultrathin optical two-color injection structure (5) are black PC, PA or PC + ABS material members and are integrally molded through two-color injection.
9. The heart rate detection module of claim 5, wherein the surface texture of the first light emitting Fresnel lens (61) and the second light emitting Fresnel lens (62) is composed of a plurality of toothed rings, the pitch is uniform, the pitch is 0.005mm to 0.15mm, the tooth height gradually increases from the middle to the outside, the range of the tooth height is 0.02mm to 0.15mm, the tooth crest angle is 15 ° to 92 °, and the lens thickness is 0.12mm to 0.25 mm;
the surface lines of the first light receiving Fresnel lens (71), the second light receiving Fresnel lens (72), the third light receiving Fresnel lens (73) and the fourth light receiving Fresnel lens (74) are composed of a plurality of toothed rings, the tooth pitch is uniform, the tooth pitch is 0.005mm-0.15mm, the tooth height is 0.02mm-0.15mm, the tooth crest angle is 15-92 degrees, and the lens thickness is 0.12mm-0.25 mm.
10. The heart rate detection module of claim 5, wherein the Fresnel textures of the surfaces of the first light-emitting Fresnel lens (61), the second light-emitting Fresnel lens (62), the first light-receiving Fresnel lens (71), the second light-receiving Fresnel lens (72), the third light-receiving Fresnel lens (73) and the fourth light-receiving Fresnel lens (74) are provided with a plurality of Fresnel structures, and the upper and lower surfaces of the lenses are provided with Fresnel textures.
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|---|---|---|---|
| CN202022392956.4U CN213787375U (en) | 2020-10-23 | 2020-10-23 | Module is listened to double-colored injection structure rhythm of heart of ultra-thin optics |
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| CN202022392956.4U CN213787375U (en) | 2020-10-23 | 2020-10-23 | Module is listened to double-colored injection structure rhythm of heart of ultra-thin optics |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113866934A (en) * | 2021-10-12 | 2021-12-31 | 安徽华米信息科技有限公司 | Support, circuit board and electronic equipment with fresnel combination lens |
| WO2023077956A1 (en) * | 2021-11-02 | 2023-05-11 | Oppo广东移动通信有限公司 | Housing assembly, wearable device, and electronic device |
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2020
- 2020-10-23 CN CN202022392956.4U patent/CN213787375U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113866934A (en) * | 2021-10-12 | 2021-12-31 | 安徽华米信息科技有限公司 | Support, circuit board and electronic equipment with fresnel combination lens |
| WO2023060975A1 (en) * | 2021-10-12 | 2023-04-20 | 安徽华米信息科技有限公司 | Stent having fresnel combination lens, circuit board, and electronic device |
| WO2023077956A1 (en) * | 2021-11-02 | 2023-05-11 | Oppo广东移动通信有限公司 | Housing assembly, wearable device, and electronic device |
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