Split type FPC (Flexible Printed Circuit) connected electric control dimming glasses
By adopting a split FPC connection design, the problems of high maintenance cost, poor compatibility and low mechanical reliability of the integrated FPC structure in existing electronically controlled dimming glasses are solved. This enables convenient replacement of dimming lenses and improves mechanical drop resistance, reduces operational complexity and supports modular product upgrades.
Patent Information
- Application Number
- CN202520375902.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-05
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-03-05
AI Technical Summary
The integrated FPC structure in existing electronically controlled dimming glasses results in high maintenance costs, poor compatibility, and low mechanical reliability. It also makes it difficult to easily replace dimming lenses with different transmittance or colors, and the FPC is prone to breakage from drops.
The design employs a split FPC connection, dividing the flexible printed circuit board into two parts. These parts are electrically connected via metal contacts to enable electrical conduction between the dimming lens and the control motherboard. The lens can be detached and installed through a standardized interface.
It reduces maintenance costs, improves mechanical reliability and compatibility, allows users to easily replace dimming lenses, reduces operational complexity, and supports modular product upgrades.
Smart Images
Figure CN223883875U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of smart glasses, and particularly relates to a split FPC connected electrically-controlled light-adjustable glasses. BACKGROUND
[0002] Smart glasses are wearable devices integrating multiple high-tech functions, usually including display screens, cameras, sensors and wireless connection technologies. They can provide augmented reality experiences, real-time information displays, navigation, photo and video recording, voice assistants and other functions.
[0003] Electrically-controlled light-adjustable glasses are a kind of smart glasses that can adjust the light transmittance or color of the lenses through electronic control, mainly used for automatically or manually adjusting the color depth of the lenses according to light conditions to provide optimal visual comfort.
[0004] The electrically-controlled light-adjustable glasses usually include a control mainboard, light-adjustable lenses and a flexible printed circuit board (FPC) electrically connecting the two.
[0005] In the existing electrically-controlled light-adjustable glasses, the FPC connecting the control mainboard and the light-adjustable lenses is usually of an integrated structure, and the FPC is electrically connected to the electrodes on the control mainboard and the electrodes on the light-adjustable lenses through welding.
[0006] For the structure of the above-mentioned existing electrically-controlled light-adjustable glasses, there is no way to conveniently replace light-adjustable lenses of different light transmittance ranges or colors according to different use conditions, and there is also a risk that the FPC will be broken and the glasses will not be usable when the glasses fall from a high place. INNOVATION CONTENT
[0007] In the face of the above technical problems, the application proposes a split FPC connected electrically-controlled light-adjustable glasses, which divides the flexible printed circuit board into two parts and electrically connects the two parts through metal contacts. This arrangement facilitates the replacement of light-adjustable lenses suitable for different conditions, prevents the overall damage of the flexible printed circuit board caused by falling, reduces maintenance costs and improves compatibility.
[0008] To achieve the above-mentioned purpose, the application proposes a split FPC connected electrically-controlled light-adjustable glasses, which includes a frame, light-adjustable lenses and a control mainboard. The frame includes a lens frame and lens legs arranged on both sides of the lens frame. The light-adjustable lenses are arranged in the lens frame. The lens legs are hollow structures in which the control mainboard is arranged.
[0009] Further comprising a first flexible printed circuit board and a second flexible printed circuit board, one end of the first flexible printed circuit board is electrically connected with the dimming lens, and the other end is provided with a first metal contact; one end of the second flexible printed circuit board is electrically connected with the control mainboard, and the other end is provided with a second metal contact;
[0010] The shapes of the first metal contact and the second metal contact are matched, and the first metal contact and the second metal contact are in contact with each other to realize circuit conduction.
[0011] The electrically controlled dimming glasses of the split type FPC connection of the present application divide the flexible printed circuit boards connecting the dimming lens and the control mainboard into two parts, and realize conduction by the contact between the two parts through the metal contacts; the dimming lens and the lens frame are detachably assembled, which is convenient for quickly replacing the dimming lens suitable for different situations, optimizes the use cost, and enhances the compatibility.
[0012] As a further improvement of the present application, the first flexible printed circuit board is fixed to the edge of the dimming lens, and one end of the first flexible printed circuit board is electrically connected with the dimming lens, so as to ensure that the signal line is in conduction with the electrode of the dimming lens.
[0013] As a further improvement of the present application, the second flexible printed circuit board is arranged at the edge of the lens frame, and the edge position of the lens frame corresponds to the edge position of the dimming lens.
[0014] As a further improvement of the present application, the second flexible printed circuit board is provided with an elastic pin at the second contact, which is electrically connected with the second contact. The elastic pin is adopted to ensure that the dimming lens is automatically compressed when installed and forms stable electrical contact.
[0015] As a further improvement of the present application, one end of the second flexible printed circuit board is a gold finger end, which passes through a reserved hole on the lens frame and enters the hollow interior of the temple, and the gold finger is electrically connected with the control mainboard to realize signal transmission.
[0016] As a further improvement of the present application, the gold finger of the second flexible printed circuit board is electrically connected with the control mainboard through a plug-in process or a welding process.
[0017] As a further improvement of the present application, the dimming lens is buckled into the lens frame, and the first flexible printed circuit board is electrically connected with the second flexible printed circuit board.
[0018] As a further improvement of the present application, the lens frame is further provided with an induction switch. When the temples are closed, the induction switch is set to the closed state, and when the temples are opened, the induction switch is set to the open state.
[0019] As a further improvement of the application, the control mode of the control mainboard is set to manual control or automatic control. The manual control is one or more of sliding control, touch control, Bluetooth connection control, and the automatic control is induction control or voice control.
[0020] Compared with the prior art, the beneficial effects of the technical scheme of the application are that the split FPC connected electrically controlled dimming glasses of the application divide the flexible printed circuit board connecting the dimming lens and the control mainboard into two parts, and the two parts are in contact through metal contacts to realize conduction. The split design decouples the entire glasses in mechanical impact, avoids stress concentration leading to the fracture of the flexible printed circuit board, and improves the drop resistance; the user can replace the dimming lens without disassembling the flexible printed circuit board, reducing the operation complexity; the design into a standardized adapter interface can be applied to various dimming lenses, supporting product modularization upgrade and replacement. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 Fig. 1 is a structural schematic diagram of the split FPC connected electrically controlled dimming glasses in an embodiment of the application;
[0022] Figure 2 Fig. 2 is a structural schematic diagram of the left and right two dimming lenses in an embodiment of the application;
[0023] Figure 3 Fig. 3 is a structural schematic diagram of the right first flexible printed circuit board in an embodiment of the application;
[0024] Figure 4 Fig. 4 is a structural schematic diagram of the right second flexible printed circuit board in an embodiment of the application.
[0025] Reference signs:
[0026] Split FPC connected electrically controlled dimming glasses-100; frame-101; lens frame-1011; temple-1012; dimming lens-102; first flexible printed circuit board-103; first metal contact-1031; second flexible printed circuit board-104; second metal contact-1041; gold finger-1042. DETAILED DESCRIPTION
[0027] The schemes in the embodiments of the application will be described in detail below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only some of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the application.
[0028] As described in the background, the electrically controlled light-adjustable glasses generally include a control mainboard, a light-adjustable lens 102, and a flexible printed circuit (FPC) electrically connecting the two.
[0029] First of all, it should be noted that one category of light-adjustable lenses 102 includes light-adjustable lenses 102 with liquid crystal light-adjustable films, which include a liquid crystal layer and electrode layers on the upper and lower sides of the liquid crystal layer. The liquid crystal molecules in the liquid crystal layer have anisotropy and can change the arrangement of the liquid crystal molecules under, for example, a voltage control signal, thereby changing the light transmittance of the entire liquid crystal layer, i.e., the light transmittance of the light-adjustable lens 102.
[0030] According to the arrangement of the liquid crystal molecules in the liquid crystal layer, various liquid crystal modes can be divided, including: twisted nematic (TN), super twisted nematic (STN), vertical alignment (VA), and electrically controlled birefringence (ECB) modes. When the electric field applied to the liquid crystal layer changes, the arrangement of the liquid crystal molecules changes, causing the retardation of the entire liquid crystal layer to change, which, in combination with the upper and lower polarizing plates, can achieve adjustment of the light transmittance of the liquid crystal layer. Alternatively, without using polarizing plates, dichroic dye is doped into the liquid crystal, and when the electric field of the upper and lower electrodes of the liquid crystal layer changes, the arrangement direction of the liquid crystal molecules changes, thereby causing the arrangement of the dye molecules in the liquid crystal to change synchronously, so that the light transmittance of the liquid crystal layer can be adjusted without using polarizing plates, such as TN, ECB, VA, and STN modes based on dye doping.
[0031] The light-adjustable lens 102 described above is only one type of light adjustment, and it can be understood that there are various types of light adjustment, such as electrochromic.
[0032] Then, although the FPC is used to connect the control mainboard and the light-adjustable lens 102 in the existing electrically controlled light-adjustable glasses, the FPC is designed in an integrated welding scheme, which has the following defects: (1) high maintenance cost: the light-adjustable lens 102 is welded and fixed with the FPC, so that the lens needs to be replaced together when it is damaged, increasing the maintenance cost; (2) poor compatibility: cannot adapt to light-adjustable lenses 102 with different light transmittances, colors, or functions; (3) low mechanical reliability: the integrated FPC is prone to breakage when dropped or bent, resulting in overall failure.
[0033] The inventors of the present application creatively proposed an electrically controlled light-adjustable glasses 100 with a split FPC connection in the face of the above defects.
[0034] As shown in Figure 1 , Figure 1 The structural schematic diagram of the split FPC connected electrically controlled dimming glasses 100 of some embodiments of the present application is shown (only part of the temple 1012 is exemplarily given in the figure). The split FPC connected electrically controlled dimming glasses 100 include a frame 101, a dimming lens 102 and a control mainboard (not shown in the figure), the frame 101 includes a lens frame 1011 and temples 1012 respectively arranged on both sides of the lens frame 1011, the dimming lens 102 is arranged in the lens frame 1011, and the temple 1012 is a hollow structure in which the control mainboard is arranged.
[0035] The number of dimming lenses 102 and control mainboards in the embodiments of the present application is not specifically limited, for example, the split FPC connected electrically controlled dimming glasses 100 can only include one dimming lens 102, and the dimming lens 102 can be located at the right eye or the left eye, and the corresponding control mainboard is located in the right or left temple 1012; or the split FPC connected electrically controlled dimming glasses 100 can include two dimming lenses 102, and the two dimming lenses 102 are respectively located at the right eye and the left eye, and the corresponding two control mainboards are located in the right and left temples 1012, at this time, the left and right dimming lenses 102 can be controlled and dimmed individually through the control mainboards connected thereto, or can be controlled and dimmed synchronously through signals such as Bluetooth or infrared.
[0036] The dimming lens 102 has a configurable light transmittance, which can be configured or adjusted based on the ambient light intensity. Specifically, in an environment with high ambient light intensity (such as under sunlight outdoors), the light transmittance of one or more dimming lenses 102 can be reduced to reduce the intensity of light passing through it, thereby protecting the eyes from high-energy light. In addition, in an environment with low ambient light intensity (such as at night outdoors, indoors, etc.), the light transmittance of one or more dimming lenses 102 can be increased, so that the user can maintain reasonable vision when wearing glasses in a weak light environment.
[0037] As shown in Figure 2 and Figure 3 , Figure 2 The structural schematic diagram of the left and right dimming lenses 102 in some embodiments of the present application is shown, the left and right dimming lenses 102 are symmetrical along the central axis and have the same structure, and the description of the dimming lens 102 below is only taken as an example of the right dimming lens 102.
[0038] In Figure 2The light-adjustable lens 102 shown can include a common lens and a liquid crystal light-adjustable film, which can be attached to the inner side of the common lens, i.e., the side close to the human eye when wearing glasses. A control electrode is provided at the upper right side of the liquid crystal light-adjustable film. One end of the first flexible printed circuit board 103 of the split FPC connected electrically controlled light-adjustable glasses 100 is electrically connected to the control electrode on the liquid crystal light-adjustable film, and the other end is provided with a first metal contact 1031, as shown in the figure. Figure 3 In this embodiment, the shape of the first flexible printed circuit board 103 is similar to a triangle, which is not limited; the first flexible printed circuit board 103 is provided with two electrical contacts, i.e., the first metal contact 1031, on the same side (the same surface); it is easy to understand that the description of one end and the other end of the first flexible printed circuit board 103 is only to distinguish different positions on the first flexible printed circuit board 103, and does not necessarily emphasize the position distance between the one end and the other end. In this embodiment, only the first flexible printed circuit board 103 is exemplarily described, and the specific structure of the first flexible printed circuit board 103 is not limited.
[0039] Similarly, in this embodiment, the second flexible printed circuit board 104 is shown as Figure 4 It can be seen that the second flexible printed circuit board 104 can be roughly divided into two parts in shape, one part is a curved part, and the other part is a straight part.
[0040] The straight part can be regarded as one end of the second flexible printed circuit board 104, and the curved part can be regarded as the other end of the second flexible printed circuit board 104. The side of the curved part facing the first flexible printed circuit board 103, more specifically, the position facing the two electrical contacts on the first flexible printed circuit board 103, is also provided with two electrical contacts, i.e., the second metal contact 1041. The side of the curved part (the other end of the second flexible printed circuit board 104) away from the first flexible printed circuit board 103 can be fixed on the lens frame 1011 at a suitable position by adhesion, and the straight part (one end of the second flexible printed circuit board 104) is electrically connected to the control main board; the shapes of the first metal contact 1031 and the second metal contact 1041 are matched, and the first metal contact 1031 and the second metal contact 1041 are in contact to realize circuit conduction. In this embodiment, only the second flexible printed circuit board 104 is exemplarily described, and the specific structure of the second flexible printed circuit board 104 is not limited.
[0041] In the above embodiment, the liquid crystal dimming film is attached to one side of the ordinary glass to form the dimming lens 102. Alternatively, the liquid crystal dimming film can be sandwiched between two layers of glass. In this case, the first flexible printed circuit board 103 only needs to be fixed to the edge of the dimming lens 102, one end of the first flexible printed circuit board 103 is electrically connected to the control electrode in the dimming lens 102, and the signal line is in electrical conduction with the electrode of the dimming lens 102.
[0042] The first flexible printed circuit board 103 is fixed to the edge of the dimming lens 102, and the second flexible printed circuit board 104 is arranged at the edge of the lens frame 1011, and the edge position of the lens frame 1011 corresponds to the edge position of the dimming lens 102. The positions of the first flexible printed circuit board 103 and the second flexible printed circuit board 104 correspond to each other, which is a necessary requirement for electrical conduction of the two contact points. The two are arranged at the edge of the dimming lens 102 or the lens frame 1011 for the purpose of aesthetics and easy installation.
[0043] Further, as shown in Figure 4 The second flexible printed circuit board 104 (bent portion) is provided with two elastic pins electrically connected to the two second metal contacts 1041 at the two second metal contacts 1041. The elastic pins ensure that the dimming lens 102 is automatically compressed during installation and forms a stable electrical contact. At the same time, one end (straight portion) of the second flexible printed circuit board 104 is a gold finger 1042, and the straight portion of the second flexible printed circuit board 104 has a suitable length, which can be flexibly bent and pass through the reserved hole (not shown in the figure) on the lens frame 1011 and enter the hollow interior of the lens leg 1012. The terminal end of the straight portion of the second flexible printed circuit board 104 is a gold finger 1042, which is electrically connected to the control mainboard to realize signal transmission.
[0044] It can be understood that the gold finger 1042 of the second flexible printed circuit board 104 can be electrically connected to the control mainboard by plugging or welding process; the connection mode of the two is not limited.
[0045] In the case of using a split FPC connection in the embodiment of the application, the dimming lens 102 can be installed in the lens frame 1011 by buckling, which is convenient for installing or replacing the dimming lens 102. When the dimming lens 102 is buckled into the lens frame 1011, the electrical connection between the first flexible printed circuit board 103 and the second flexible printed circuit board 104 is completed.
[0046] To further improve the intelligence of the split FPC connected electrically controlled dimming glasses 100 in the embodiments of the present application, an inductive switch is further arranged on the frame 101. The function of the inductive switch meets: when the temple 1012 is folded, the inductive switch is set to the closed state, and when the temple 1012 is opened, the inductive switch is set to the open state. The inductive switch can specifically include a magnet and a Hall sensor, the magnet is arranged on the lens frame 1011, and the Hall sensor is arranged in the hollow part of the temple 1012; the magnet provides a magnetic field for triggering the Hall sensor, the Hall sensor detects the change of the magnetic field strength and converts it into an electric signal, and finally realizes the opening or closing state of the inductive switch.
[0047] For the split FPC connected electrically controlled dimming glasses 100 in the embodiments of the present application, the control signal for controlling the dimming lens 102 to realize different light transmittance or color is sent by the control mainboard, and the control mode of the control mainboard can be set to manual control or automatic control. For example, the manual control can be one or more of sliding control, touch control, Bluetooth connection control; the automatic control can be inductive control or sound control.
[0048] Specifically, in one case, the control mainboard includes a light sensor, and the light sensor is electrically connected to the control mainboard. The split FPC connected electrically controlled dimming glasses 100 can automatically control the light transmittance or color of the dimming lens 102 according to the signal of the light sensor.
[0049] The above-mentioned light sensor is an optical sensor that can be used to sense the intensity of ambient light. The optical sensor can be positioned on the nose bridge of the frame 101 and / or some other position on the frame 101. The optical sensor can include any device that can convert light into an electrical signal, such as a photodiode.
[0050] In some embodiments, the optical sensor includes one or more photovoltaic cells, such as solar cells, which can provide a DC current or DC voltage to the control board reflecting the intensity of ambient light; the solar cells can also provide power to the control board, thus eliminating the need for additional batteries, which can reduce the overall weight and size of the glasses. The control board can include a power converter to convert the DC current / voltage into an AC voltage in order to generate an electric field on the liquid crystal dimming film in the dimming lens 102. In some examples, the solar cells can include micro-silicon solar cells with a rectangular shape and can have a size range between 6mm x 8mm to 10mm x 10mm. The frame 101 can also include a housing to encapsulate the solar cells, and the frame 101 can include a pinhole or other appropriately sized opening to expose the solar cells encapsulated within the housing to ambient light. The pinhole or the like can increase the inductive sensitivity of the solar cells to light directly emitted from a light source (e.g., the sun, an electric light, etc.), which can accurately represent the intensity of ambient light, while reducing the inductive sensitivity to other types of light (e.g., reflected light). Such an arrangement can improve the correlation between the output of the solar cells and the intensity of ambient light. In addition, the pinhole can also prevent the overall exposure of the solar cells while allowing the solar cells to collect light, which can improve the overall appearance of the glasses while maintaining the ability of the overall glasses to perceive the intensity of ambient light and make corresponding adjustments to the light.
[0051] The above description is in detail for one control mode of the control board, and it can be understood that the control mode can also be a sliding control, a touch control, a Bluetooth connection control, or other easily implemented control modes such as a sound control.
[0052] The electrically controlled dimming glasses 100 of the split FPC connection of the present application divide the flexible printed circuit board electrically connecting the dimming lens 102 and the control board into two parts, and the two parts are in contact through metal contacts to realize conduction. The split design decouples the entire glasses in mechanical impact, avoids stress concentration to cause the flexible printed circuit board to break, and improves the drop resistance; the user can replace the dimming lens without disassembling the FPC, which reduces the operation complexity; the design is a standardized adaptive interface, which can be applied to various dimming lenses and supports product modularization upgrade and replacement.
[0053] The above embodiments are only used to illustrate the specific embodiments of the present application, and it should be noted that for those skilled in the art, various modifications and changes can be made without departing from the concept of the present application, and these modifications and changes should also belong to the protection scope of the present application.
Claims
1. A split FPC connected electrically controlled dimming eyewear, characterized in that, The mirror frame comprises a lens frame and mirror legs arranged on both sides of the lens frame, a light-adjustable lens is arranged in the lens frame, and the mirror legs are hollow structures in which the control mainboard is arranged; The first flexible printed circuit board is electrically connected to one end of the light-adjustable lens and is provided with a first metal contact at the other end; and the second flexible printed circuit board is electrically connected to the control mainboard and is provided with a second metal contact at the other end. The first metal contact and the second metal contact are matched in shape, and the first metal contact and the second metal contact are in contact with each other to realize circuit conduction.
2. The electrically controlled light-adjustable glasses connected by split FPC according to claim 1, characterized in that, The first flexible printed circuit board is fixed to the edge of the light-adjustable lens.
3. The electrically controlled light-adjustable glasses connected by split FPC according to claim 2, characterized in that, The second flexible printed circuit board is arranged at the edge of the lens frame, and the edge position of the lens frame corresponds to the edge position of the light-adjustable lens.
4. The split FPC connected electrically controlled shading eyewear of claim 1, wherein, The second flexible printed circuit board is provided with an elastic pin at the second metal contact, which is electrically connected to the second metal contact.
5. The split FPC connected electrically controlled shading eyewear of claim 1, wherein, One end of the second flexible printed circuit board is a gold finger end, which passes through a reserved hole in the lens frame and enters the hollow interior of the mirror leg, and the gold finger is electrically connected to the control mainboard to realize signal transmission.
6. The electrically controlled light-adjustable glasses connected by split FPC according to claim 5, characterized in that, The gold finger of the second flexible printed circuit board is electrically connected to the control mainboard through plug-in or welding process.
7. The split FPC connected electrically controlled shading eyewear of claim 1, wherein, The light-adjustable lens is buckled into the lens frame, and the first flexible printed circuit board is electrically connected to the second flexible printed circuit board.
8. The split FPC connected electrically controlled shading eyewear of claim 1, wherein, The mirror frame is also provided with an induction switch; when the mirror legs are closed, the induction switch is set to the closed state, and when the mirror legs are opened, the induction switch is set to the open state.
9. The split FPC connected electrically controlled shading eyewear of claim 1, wherein, The control mode of the control mainboard is set to manual control or automatic control.
10. The electrically controlled light-adjustable glasses connected by split FPC according to claim 9, characterized in that, The manual control is one or more of sliding control, touch control, and Bluetooth connection control, and the automatic control is induction control or voice control.