Light-sensing dimming device and portable device with light-sensing dimming function

Abstract

The application relates to the technical field of photoelectric control, in particular to a light-sensing light-adjusting device and a portable device with light-sensing light-adjusting function, which comprises a body module, a fiber module, a light-sensitive piece, a light-emitting piece and a power supply piece, the light-sensitive piece and the light-emitting piece are electrically connected with the power supply piece, the fiber module comprises a light guide fiber, one end of the light guide fiber is a light collecting end, the other end of the light guide fiber is a light emitting end, the light collecting end is located in the body module to collect external light, the light-sensitive piece has a light-sensitive surface, the light emitting end is arranged close to the light-sensitive surface to transmit the light collected by the light collecting end to the light-sensitive surface, and then the light-emitting piece emits light. The application aims at at least one technical problem in the background art, and provides a light-sensing light-adjusting device and a portable device with light-sensing light-adjusting function.

Description

Technical Field

[0001] This application relates to the field of optoelectronic control technology, and more specifically, to a photosensitive dimming device and a portable device with photosensitive dimming function. Background Technology

[0002] Currently, most red dot sights on the market use an automatic dimming system where photosensitive components (such as photoresistors or photodiodes) are directly exposed on the outer wall of the sight housing or the frame. This method is limited by the compactness of the internal space of the sight housing and frame. Due to the constraints of the scope housing, lens structure, battery, and circuit board layout, the photosensitive elements can only be fixed in a limited number of preset positions, and cannot be flexibly arranged according to actual optical path requirements.

[0003] The above-mentioned fixed layout scheme has the following drawbacks: First, the photosensitive surface of the photosensitive element must face the external environment, and its installation position and orientation are limited by the opening direction of the outer shell, resulting in extremely low design freedom; Second, when the product undergoes structural modification or mold fine-tuning, the original photosensitive points are easily blocked by newly added structural components, reinforcing ribs, or external accessories. Once the blockage occurs, the photosensitive element cannot receive ambient light normally, and the dimming function will fail. It is necessary to re-open the mold and adjust the position of the photosensitive window, which greatly increases the product iteration cost and cycle. Summary of the Invention

[0004] The purpose of this application is to provide a photosensitive dimming device and a portable device with photosensitive dimming function, addressing at least one of the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this application adopts the following technical solution: One aspect of this application provides a photosensitive dimming device, including a main body module, and an optical fiber module, a photosensitive element, a light-emitting element, and a power supply element, all mounted on the main body module. The photosensitive element and the light-emitting element are both electrically connected to the power supply element. The optical fiber module includes a light-guiding optical fiber, one end of which is a light-collecting end, and the other end of which is a light-emitting end. The light-collecting end is located on the main body module to collect external light. The photosensitive element has a photosensitive surface, and the light-emitting end is disposed close to the photosensitive surface to transmit the light collected by the light-collecting end to the photosensitive surface, thereby causing the light-emitting element to emit light.

[0006] Optionally, the fiber optic module further includes a focusing lens installed on the light-guiding fiber, the focusing lens being used to focus external light onto the light-collecting end.

[0007] The beneficial effects of this technical solution are as follows: In this way, the focusing lens can increase the amount of light entering the light-collecting end per unit time, so that the light-guiding fiber can still collect enough light flux to drive the photosensitive element to produce a response change in a low-light environment, thereby improving the light-collecting sensitivity of the photosensitive dimming device provided in this application under low-illuminance conditions; at the same time, by setting the focusing lens, the light-collecting end does not need to directly face the light source to collect ambient light over a large range, and the arrangement position and orientation of the light-collecting end on the outer wall of the body have a higher degree of freedom.

[0008] Optionally, the fiber optic module further includes a protective sleeve, one end of which is fitted onto the light-collecting end, and the other end of which is fitted onto the focusing lens. The focusing lens, the protective sleeve, and the light-collecting end are coaxially arranged.

[0009] The beneficial effects of this technical solution are as follows: The protective sleeve constrains the relative spatial position and axial direction between the focusing lens and the light-collecting end, ensuring that the light converged by the focusing lens can accurately enter the light-collecting end along a preset optical path, reducing optical coupling losses caused by relative displacement or axial deflection between the focusing lens and the light-collecting end. Simultaneously, the protective sleeve covers the outer sides of the light-collecting end and the focusing lens, reducing the chance of foreign objects directly contacting the surface of the focusing lens and the light-collecting end, and lowering the possibility of optical performance degradation due to scratches, dust accumulation, or moisture on the surface of the focusing lens and the light-collecting end.

[0010] Optionally, the focusing lens is a frosted condenser head.

[0011] Optionally, the main body module includes a lens and a main body. The main body includes a frame portion and a base portion. The lens is installed on the inner side of the frame portion, the base portion is used to connect to an external mounting position, and the light-collecting end is located in the frame portion.

[0012] The beneficial effects of this technical solution are as follows: By setting the light-collecting end in the frame and arranging it separately from the base, the position of the light-collecting end is not limited by the connection structure between the base and the external mounting position. When the base is structurally modified to adapt to different external mounting positions, the position of the light-collecting end in the frame can remain unchanged, without the need to readjust the light-collecting point position due to the modification of the base. This helps to reduce the cost of redesigning the light-collecting system due to changes in the base structure during product iteration.

[0013] Optionally, in the first direction, the light-collecting end is located at the end of the frame portion away from the base portion; Alternatively, in the second direction, the light-collecting end is located on one side of the outer wall of the frame portion; Alternatively, the light-collecting end is clamped between the lens and the frame portion; The first direction is parallel to the arrangement direction of the frame portion and the base portion, and the second direction is parallel to the lens and perpendicular to the first direction.

[0014] The beneficial effects of this technical solution are as follows: it allows the installation position of the light-collecting end to be arranged according to the layout of the surrounding structural components of the frame and the possible orientation of external obstructions, which is conducive to improving the arrangement flexibility of the light-collecting end on the main body. When the base is structurally modified to adapt to different external installation positions, the light-collecting end arrangement position that does not interfere with the modified base structure can be selected from the above-mentioned multiple arrangement methods, without the need to redesign the installation position of the photosensitive element and the photosensitive window of the main body shell.

[0015] Optionally, the photosensitive dimming device provided in this application includes at least two optical fiber modules, with at least one light-collecting end located at the end of the lens frame portion away from the base portion in a first direction, and at least one light-collecting end located on one side of the lens frame portion in a second direction; the first direction is parallel to the arrangement direction of the lens frame portion and the base portion, and the second direction is parallel to the lens and perpendicular to the first direction.

[0016] The beneficial effects of this technical solution are as follows: it allows for the arrangement of independent light-collecting ends at multiple different locations around the body. Each light-collecting end collects ambient light from its own location and transmits it to the photosensitive surface of the photosensitive element through its own optical fiber. When one of the light-collecting ends is blocked by an external object, the light-collecting ends at other locations can still continue to collect ambient light. The total luminous flux received by the photosensitive surface of the photosensitive element will not be completely lost due to the blocking of a single light-collecting end. The total luminous flux formed by the convergence of the ambient light intensity collected by each light-collecting end at different locations is closer to the average brightness level of the ambient light outside the body than the luminous flux collected by a single light-collecting end. This helps to reduce the brightness fluctuation of the light-emitting element caused by local blocking or local light and shadow changes.

[0017] Optionally, the main body is provided with an interconnected mounting cavity and a wiring cavity, the photosensitive element and the light-emitting end are both located in the mounting cavity, and the portion of the optical fiber located between the light-collecting end and the light-emitting end is disposed in the wiring cavity.

[0018] The beneficial effects of this technical solution are as follows: In this way, the routing cavity can be adaptively designed according to the arrangement of other components (such as power supply components and PCB boards) inside the body. The optical fiber is laid out along the extension direction of the routing cavity without occupying the space of the mounting cavity where the photosensitive component is located. This is conducive to the rational planning of the accommodation space of each component in the compact cavity inside the body, and reduces the possibility of interference between the optical fiber and other components inside the body during the routing process.

[0019] Optionally, the photosensitive dimming device provided in this application further includes a miniature voltage divider regulator, the input terminal of which is electrically connected to the photosensitive element, and the output terminal of which is electrically connected to the light-emitting element. The miniature voltage divider regulator responds to changes in the electrical parameters of the photosensitive element to adjust the driving current output to the light-emitting element.

[0020] The beneficial effects of this technical solution are as follows: In this way, the response signal of the photosensitive element to ambient light intensity is processed by the micro voltage divider regulator and converted into an electrical signal driving the light-emitting element. A signal transmission path is formed between the two, with the micro voltage divider regulator acting as an intermediate link. Since the micro voltage divider regulator adjusts the driving current output to the light-emitting element in response to changes in the electrical parameters of the photosensitive element, there is a corresponding relationship between the driving current received by the light-emitting element and the ambient light intensity sensed by the photosensitive element. This allows the photosensitive dimming device provided in this application to automatically change the brightness of the light-emitting element according to changes in ambient light intensity. Simultaneously, the micro voltage divider regulator has a linear response characteristic to changes in the electrical parameters of the photosensitive element, causing the driving current of the light-emitting element to change continuously with changes in ambient light intensity. This results in a stepless and smooth change in the brightness of the light-emitting element, reducing the probability of brightness jumps caused by level switching.

[0021] Another aspect of this application provides a portable device with photosensitive dimming function, including the photosensitive dimming device provided in this application.

[0022] The technical solution provided in this application can achieve at least one of the following beneficial effects: The photosensitive dimming device and portable device with photosensitive dimming function provided in this application achieve light transmission between the light-collecting end and the photosensitive element through optical fiber. This allows the photosensitive element to be placed in any empty cavity position inside the main module, eliminating the need for the photosensitive element to be directly exposed on the outer wall of the main module for light collection, as in existing solutions. Therefore, the structural layout flexibility of the photosensitive dimming device provided in this application is improved. The installation position of the photosensitive element is no longer limited by the preset opening direction of the main module and the constraints of the narrow space inside the main module. At the same time, when the main module undergoes structural modification or mold fine-tuning, only the arrangement position or wiring path of the light-collecting end of the optical fiber needs to be adjusted. There is no need to redesign the installation position of the photosensitive element and the corresponding photosensitive window, which helps to reduce the structural modification cost during product iteration and shorten the development cycle.

[0023] The additional technical features and advantages of this application will become more apparent from the following description or from practical application. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the specific embodiments of this application, the accompanying drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a three-dimensional structural schematic diagram of one embodiment of the photosensitive dimming device provided in this application, wherein the dashed lines indicate that the photosensitive element 05, the PCB board 06 and the light-emitting element 07 are disposed in the mounting cavity; Figure 2 This is a three-dimensional structural schematic diagram of another embodiment of the photosensitive dimming device provided in this application, wherein the dashed lines indicate that the photosensitive element 05, the PCB board 06 and the light-emitting element 07 are disposed in the mounting cavity; Figure 3 This is a partial structural schematic diagram of one embodiment of the optical fiber module provided in this application. Figure 4 A schematic diagram illustrating the light-collecting principle of one embodiment of the optical fiber module provided in this application. Figure 5 This is a schematic diagram illustrating the dimming working principle of one embodiment of the photosensitive dimming device provided in this application, wherein the photosensitive element is a photoresistor and the light-emitting element is a red dot LED; Figure 6The electrical parameter specification table for one embodiment of the photosensitive device provided in this application embodiment, wherein Ta=25℃ indicates that the values ​​are all measured and calibrated under standard test conditions with an ambient temperature of 25 degrees Celsius (room temperature); Figure 7 This is a schematic diagram of the light-emitting element driving circuit in one embodiment of the photosensitive dimming device provided in this application.

[0026] Figure label: 01. Fiber optic module; 02. Lens; 03. Frame part; 04. Base part; 05. Photosensitive components; 06. PCB board; 07. Illuminating component; 08. Light-collecting end; 9. Protective case; 10. Focusing lens; 11. Body; 12. Optical fiber. Detailed Implementation

[0027] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] like Figures 1 to 6As shown, one aspect of this application provides a photosensitive dimming device, including a main body module, and an optical fiber module 01, a photosensitive element 05, a light-emitting element 07, and a power supply unit, all installed on the main body module. The photosensitive element 05 and the light-emitting element 07 are both electrically connected to the power supply unit. The optical fiber module 01 includes a light-guiding optical fiber 12, one end of which is a light-collecting end 08, and the other end of which is a light-emitting end. The light-collecting end 08 is located on the main body module to collect external light. The photosensitive element 05 has a photosensitive surface, and the light-emitting end is disposed close to the photosensitive surface to transmit the light collected by the light-collecting end 08 to the photosensitive surface, thereby causing the light-emitting element 07 to emit light.

[0031] In this embodiment, the light-guiding fiber 12 is used to collect ambient natural light. The light-emitting element 07 is preferably a red dot LED or an indicator LED, and the power supply element is preferably a button battery. The light-guiding fiber 12 is preferably a high-transmittance flexible plastic fiber (POF plastic fiber), with a diameter between 0.5 mm and 5 mm, and is impact-resistant. The light-guiding fiber 12 can be bent arbitrarily and follows the contour of the internal cavity of the main body module. The number of light-guiding fibers 12 is one or more. When multiple light-guiding fibers 12 are provided, the light-emitting ends of the multiple light-guiding fibers 12 converge and are aligned with the photosensitive surface. The light-collecting end 08 and the light-emitting end are preferably separated from each other in spatial position, and the light-guiding fiber 12 transmits the light collected by the light-collecting end 08 to the light-emitting end for emission.

[0032] As a preferred embodiment, the light-collecting end 08 can be located in an existing gap in the main body module, at the corner of the outer wall (or shell) edge, or in a pre-set shallow groove structure, without the need to open a through hole in the outer wall (or shell) of the main body module.

[0033] Alternatively, the light-collecting end 08 can extend to the outer wall surface through a through hole in the main body module. The end face of the light-collecting end 08 is exposed to the outside of the main body module to receive ambient light. The light-emitting end is fixed to the photosensitive surface by adhesive or tooling, so that the light-emitting end face is in contact with the photosensitive surface.

[0034] The photosensitive dimming device provided in this application achieves light transmission between the light-collecting end 08 and the photosensitive element 05 through the optical fiber 12. This allows the photosensitive element 05 to be placed in any empty cavity position inside the main module, eliminating the need for the photosensitive element 05 to be directly exposed on the outer wall of the main module for light collection, as in existing solutions. Therefore, the structural layout flexibility of the photosensitive dimming device provided in this application is improved. The installation position of the photosensitive element 05 is no longer limited by the preset opening direction of the main module and the constraints of the narrow space inside the main module. At the same time, when the main module undergoes structural modification or mold fine-tuning, only the arrangement position or wiring path of the light-collecting end 08 of the optical fiber 12 needs to be adjusted. There is no need to redesign the installation position of the photosensitive element 05 and the corresponding photosensitive window, which helps to reduce the structural modification cost during product iteration and shorten the development cycle.

[0035] like Figure 3 and Figure 4 As shown, optionally, the optical fiber module 01 further includes a focusing lens 10 installed on the light-guiding optical fiber 12. The focusing lens 10 is used to focus ambient light onto the light-collecting end 08. In this way, the focusing lens 10 can increase the amount of light entering the light-collecting end 08 per unit time, allowing the light-guiding optical fiber 12 to still collect sufficient luminous flux to drive the photosensitive element 05 to produce a response change even in low-light environments, thereby improving the light-collecting sensitivity of the photosensitive dimming device provided in this application under low-illuminance conditions. Simultaneously, by setting the focusing lens 10, the light-collecting end 08 can collect ambient light over a larger range without directly facing the light source, and the arrangement position and orientation of the light-collecting end 08 on the outer wall of the body 11 have greater freedom of choice. Preferably, the focusing lens 10 is a miniature condensing lens, installed on the front end of the light-collecting end 08, used to focus ambient light onto the surface of the light-collecting end 08 to improve light-collecting efficiency in low-light environments.

[0036] Optionally, the fiber optic module 01 further includes a protective sleeve 09, one end of which is fitted onto the light-collecting end 08, and the other end of which is fitted onto the focusing lens 10. The focusing lens 10, the protective sleeve 09, and the light-collecting end 08 are coaxially arranged. In this way, the protective sleeve 09 constrains the relative spatial position and axial direction between the focusing lens 10 and the light-collecting end 08, ensuring that the light rays converged by the focusing lens 10 can accurately enter the light-collecting end 08 along a preset optical path, reducing optical coupling losses caused by relative displacement or axial deflection between the focusing lens 10 and the light-collecting end 08. Simultaneously, the protective sleeve 09 covers the outer surfaces of the light-collecting end 08 and the focusing lens 10, reducing the chance of foreign objects directly contacting the surface of the focusing lens 10 and the surface of the light-collecting end 08, and lowering the possibility of optical performance degradation due to scratches, dust accumulation, or moisture on the surface of the focusing lens 10 and the surface of the light-collecting end 08. Of course, the focusing lens 10 and the light-collecting end 08 can also be coaxial, with the axis of the focusing lens 10 intersecting the axis of the light-collecting end 08. In one embodiment of this application, the protective sleeve 09 integrates the focusing lens 10 and the light-collecting end 08 into a single structural unit. This single structural unit is pre-assembled as an independent component and then installed at the location of the light-collecting end 08 of the light-guiding optical fiber 12.

[0037] Optionally, the focusing lens 10 is a frosted condenser head. Optionally, the main body module includes a lens 02 and a main body 11. The main body 11 includes a frame portion 03 and a base portion 04. The lens 02 is mounted on the inner side of the frame portion 03, and the base portion 04 is used to connect to an external mounting position. The light-collecting end 08 is located in the frame portion 03. By placing the light-collecting end 08 in the frame portion 03 and separating it from the base portion 04, the position of the light-collecting end 08 is not limited by the connection structure between the base portion 04 and the external mounting position. When the base portion 04 undergoes structural modification to adapt to different external mounting positions, the position of the light-collecting end 08 in the frame portion 03 can remain unchanged. This eliminates the need to readjust the light-collecting point position due to changes in the base portion 04 during product iteration, thus reducing the cost of redesigning the light-collecting system due to structural changes in the base portion 04 during product iteration.

[0038] Optionally, in the first direction, the light-collecting end 08 is located at the end of the frame portion 03 that is away from the base portion 04; Alternatively, in the second direction, the light-collecting end 08 is located on one side of the outer wall of the frame portion 03; Alternatively, the light-collecting end 08 is clamped between the lens 02 and the frame portion 03; The first direction is parallel to the arrangement direction of the frame portion 03 and the base portion 04, and the second direction is parallel to the lens 02 and perpendicular to the first direction.

[0039] Specifically, such as Figure 1 As shown, one optical fiber 12 extends along the wall of the frame portion 03, with the light-collecting end 08 reaching the end of the frame portion 03 away from the base portion 04; another optical fiber 12 extends along the outer wall of the frame portion 03, with the light-collecting end 08 located on one side of the outer wall of the frame portion 03 in a second direction; as... Figure 2 As shown, a light-guiding optical fiber 12 extends along the inner wall of the lens frame 03, and the light-collecting end 08 is clamped between the lens 02 and the lens frame 03.

[0040] This allows the installation position of the light-collecting end 08 to be arranged according to the layout of the surrounding structural components of the frame portion 03 and the possible orientation of external obstructions, which is beneficial to improving the arrangement flexibility of the light-collecting end 08 on the body 11. When the base portion 04 undergoes structural modification to adapt to different external installation positions, the arrangement position of the light-collecting end 08 that does not interfere with the modified base portion 04 structure can be selected from the above-mentioned arrangement methods, without the need to redesign the installation position of the photosensitive element 05 and the photosensitive window of the body 11 shell. When the photosensitive dimming device provided in this application is applied to a sight, the light-collecting end 08 can also be set in the front peripheral area of ​​the frame portion 03 (even if the lens 02 and the light-collecting end 08 are arranged in a third direction, the first direction and the second direction are perpendicular to the third direction, and the light-collecting end 08 does not obstruct the lens 02), which is beneficial to reduce the obstruction of the light-collecting end 08 by the surrounding structural components of the body 11 and the user's grip, so that the ambient light intensity collected by the light guide fiber 12 is closer to the brightness level of the actual use environment. Preferably, the light-collecting end 08 is fixed to the frame portion 03 by adhesive or embedding, or clamped in the assembly gap between the lens 02 and the frame portion 03.

[0041] Optionally, the photosensitive dimming device provided in this application includes at least two optical fiber modules 01, with at least one light-collecting end 08 located at the end of the lens frame 03 away from the base 04 in a first direction, and at least one light-collecting end 08 located on one side of the lens frame 03 in a second direction; the first direction is parallel to the arrangement direction of the lens frame 03 and the base 04, and the second direction is parallel to the lens 02 and perpendicular to the first direction. This allows for the arrangement of independent light-collecting ends 08 at multiple different locations around the periphery of the main body 11. Each light-collecting end 08 collects ambient light from its respective location and transmits it to the photosensitive surface of the photosensitive element 05 via its respective optical fiber 12. When one light-collecting end 08 is blocked by an external object, the light-collecting ends 08 at other locations can still collect ambient light. The total luminous flux received by the photosensitive surface of the photosensitive element 05 is not completely lost due to the blockage of a single light-collecting end 08. The total luminous flux formed by the convergence of the ambient light intensity collected by each light-collecting end 08 at different locations is closer to the average brightness level of the ambient light outside the main body 11 than the luminous flux collected by a single light-collecting end 08, which helps to reduce brightness fluctuations of the light-emitting element caused by local blockage or changes in local light and shadow. In this embodiment, the number of optical fibers 12 is preferably 1 to 6, for example, 2, 3, or 4.

[0042] Optionally, the body 11 is provided with an interconnected mounting cavity and a wiring cavity. The photosensitive element 05 and the light-emitting end are both located in the mounting cavity, and the portion of the optical fiber 12 located between the light-collecting end 08 and the light-emitting end is located in the wiring cavity. In this way, the wiring cavity can be adaptively designed according to the arrangement of other components (such as power supply components and PCB board 06) inside the body 11. The optical fiber 12 is laid along the extension direction of the wiring cavity, without occupying the space of the mounting cavity where the photosensitive element 05 is located. This facilitates the rational planning of the accommodating space for each component within the compact cavity inside the body 11, reducing the possibility of interference between the optical fiber 12 and other components inside the body 11 during wiring. Of course, the optical fiber 12 can also be laid along a gap on the outer wall of the body 11. Preferably, the portion of the light-guiding fiber 12 located between the light-collecting end 08 and the light-emitting end is disposed within the internal cavity of the body 11, running along the contour of the inner wall of the cavity to avoid the battery and circuit board layout; the portion of the light-guiding fiber 12 located between the light-collecting end 08 and the light-emitting end can also be embedded in a gap or recessed groove on the outer wall of the body 11, extending along the surface of the outer wall. Preferably, the photosensitive dimming device provided in this application further includes a PCB board 06, wherein the PCB board 06, the light-emitting element 07, and the power supply element are all located within the mounting cavity, which is located in the base portion 04, and the wiring cavity is located in the frame portion 03. The photosensitive element 05 is fixed on the PCB board 06, and the light-emitting end converges at the location of the photosensitive element 05 on the PCB board 06. The electrical connection between the photosensitive element 05, the light-emitting element 07, and the power supply element is achieved through the printed circuit on the PCB board 06.

[0043] Optionally, the photosensitive dimming device provided in this application further includes a miniature voltage divider regulator, the input terminal of which is electrically connected to the photosensitive element 05, and the output terminal of which is electrically connected to the light-emitting element 07. The miniature voltage divider regulator responds to changes in the electrical parameters of the photosensitive element 05 to adjust the driving current output to the light-emitting element 07. In this way, the response signal of the photosensitive element 05 to the ambient light intensity is processed by the micro voltage divider regulator and converted into an electrical signal driving the light-emitting element 07. A signal transmission path is formed between the two, with the micro voltage divider regulator as the intermediate link. Since the micro voltage divider regulator adjusts the driving current output to the light-emitting element 07 in response to changes in the electrical parameters of the photosensitive element 05, there is a corresponding relationship between the driving current received by the light-emitting element 07 and the ambient light intensity sensed by the photosensitive element 05. This allows the photosensitive dimming device provided in this application to automatically change the brightness of the light-emitting element 07 according to changes in ambient light intensity. At the same time, the micro voltage divider regulator has a linear response characteristic to changes in the electrical parameters of the photosensitive element 05, so that the driving current of the light-emitting element 07 changes continuously with changes in ambient light intensity. This results in a stepless and smooth change in the brightness of the light-emitting element 07, reducing the probability of brightness jumps caused by level switching. In this embodiment, the micro voltage divider regulator is preferably an adjustable low-dropout linear regulator or a programmable low-dropout linear constant current LED driver.

[0044] Another aspect of this application provides a portable device with photosensitive dimming function, characterized in that it includes the photosensitive dimming device provided in this application.

[0045] The portable device with photosensitive dimming function provided in this application is implemented using the photosensitive dimming device provided in this application. Since light transmission is achieved between the light-collecting end 08 and the photosensitive element 05 through the optical fiber 12, the photosensitive element 05 can be placed in any empty cavity position inside the main body module. Unlike existing solutions, the photosensitive element 05 does not need to be directly exposed on the outer wall of the main body module for light collection. Therefore, the structural layout flexibility of the photosensitive dimming device provided in this application is improved. The installation position of the photosensitive element 05 is no longer limited by the preset opening direction of the main body module and the constraints of the narrow space inside the main body module. At the same time, when the main body module undergoes structural modification or mold fine-tuning, only the arrangement position or wiring path of the light-collecting end 08 of the optical fiber 12 needs to be adjusted. There is no need to redesign the installation position of the photosensitive element 05 and the corresponding photosensitive window. This helps to reduce the structural modification cost during product iteration and shorten the development cycle.

[0046] In this embodiment, the portable device with photosensitive dimming function includes devices such as a red dot sight, an electronic watch, a handheld digital product, and an outdoor optical rangefinder. When the portable device with photosensitive dimming function is a red dot sight, the light-emitting element 07 is the red dot LED of the red dot sight, and the power supply is a button battery. When the portable device with photosensitive dimming function is an electronic watch or a handheld digital product, the light-emitting element 07 is a status indicator light or a dot-shaped backlight source, the light-collecting end 08 is embedded in the bezel gap or the product shell gap, and the light-guiding optical fiber 12 transmits the ambient light collected by the light-collecting end 08 to the photosensitive element 05 inside the device, so as to realize the automatic adjustment of the indicator light brightness according to the ambient light.

[0047] like Figure 7As shown, in one specific embodiment, the photosensitive dimming device further includes a microcontroller (U1), the positive power supply terminal (VDD) of the microcontroller (U1) is connected to the positive power supply terminal (VCC), the negative power supply terminal (VSS) is connected to the negative power supply terminal (GND), and the first filter capacitor (C2) and the second filter capacitor (C3) are connected in parallel across the positive power supply terminal and the negative power supply terminal, respectively, to suppress power supply ripple. The photosensitive element and the voltage divider resistor (R1) are connected in series to form a voltage divider branch, which is connected between the positive power supply (VCC) and the negative power supply (GND). One end of the photosensitive element is connected to the positive power supply (VCC), and the other end of the photosensitive element is connected to one end of the voltage divider resistor (R1) and the analog-to-digital converter pin (PA4-ADC) of the microcontroller (U1). The other end of the voltage divider resistor (R1) is connected to the negative power supply (GND). The microcontroller (U1) acquires the voltage value of the common terminal of the photosensitive element and the voltage divider resistor (R1) through the analog-to-digital converter pin (PA4-ADC). This voltage value changes inversely with the ambient light intensity. The first drive signal output pin (PA5_AOUT) of the microcontroller (U1) is electrically connected to the first light-emitting element (Circle_LED) via a first diode (D1), and the other end of the first light-emitting element (Circle_LED) is connected to the negative power supply (GND). The second drive signal output pin of the microcontroller (U1) is electrically connected to the second light-emitting element (Dot_LED) via a second diode (D2), and the other end of the second light-emitting element (Dot_LED) is connected to the negative power supply (GND). Based on the voltage value acquired by the analog-to-digital conversion pin, the microcontroller (U1) outputs drive signals to the first light-emitting element and the second light-emitting element respectively through the first drive signal output pin (PA5_AOUT) and the second drive signal output pin to adjust the brightness of each light-emitting element. The photosensitive dimming device also includes a first push-button switch (SW1) and a second push-button switch (SW2). One end of the first push-button switch (SW1) is connected to the first button input pin (RA3) of the microcontroller (U1), and the other end is connected to the negative power supply (GND); one end of the second push-button switch (SW2) is connected to the second button input pin (RA2) of the microcontroller (U1), and the other end is connected to the negative power supply (GND). The microcontroller (U1) responds to the closed signal of either the first push-button switch (SW1) or the second push-button switch (SW2) to perform a manual adjustment operation on the brightness of the light-emitting element. The first button input pin (RA3) of the microcontroller (U1) has an internal pull-up resistor enabled, and the second button input pin (RA2) of the microcontroller (U1) has an internal pull-down resistor enabled.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A photosensitive dimming device, characterized in that, The device includes a main body module, and an optical fiber module, a photosensitive element, a light-emitting element, and a power supply element, all installed on the main body module. The photosensitive element and the light-emitting element are electrically connected to the power supply element. The optical fiber module includes a light-guiding fiber, one end of which is a light-collecting end and the other end of which is a light-emitting end. The light-collecting end is located on the main body module to collect external light. The photosensitive element has a photosensitive surface, and the light-emitting end is positioned close to the photosensitive surface to transmit the light collected by the light-collecting end to the photosensitive surface, thereby causing the light-emitting element to emit light.

2. The photosensitive dimming device according to claim 1, characterized in that, The fiber optic module also includes a focusing lens installed on the light-guiding fiber, which is used to focus external light onto the light-collecting end.

3. The photosensitive dimming device according to claim 2, characterized in that, The fiber optic module also includes a protective sleeve, one end of which is fitted onto the light-collecting end, and the other end of which is fitted onto the focusing lens. The focusing lens, the protective sleeve, and the light-collecting end are coaxially arranged.

4. The photosensitive dimming device according to claim 2, characterized in that, The focusing lens is a frosted condenser.

5. The photosensitive dimming device according to claim 1, characterized in that, The main body module includes a lens and a main body. The main body includes a frame portion and a base portion. The lens is installed on the inner side of the frame portion. The base portion is used to connect to an external mounting position. The light-collecting end is located in the frame portion.

6. The photosensitive dimming device according to claim 5, characterized in that, In the first direction, the light-collecting end is located at the end of the frame portion that is away from the base portion; Alternatively, in the second direction, the light-collecting end is located on one side of the outer wall of the frame portion; Alternatively, the light-collecting end is clamped between the lens and the frame portion; The first direction is parallel to the arrangement direction of the frame portion and the base portion, and the second direction is parallel to the lens and perpendicular to the first direction.

7. The photosensitive dimming device according to claim 5, characterized in that, It includes at least two optical fiber modules, with at least one light-collecting end located at the end of the lens frame portion away from the base portion in a first direction, and at least one light-collecting end located on one side of the lens frame portion in a second direction; the first direction is parallel to the arrangement direction of the lens frame portion and the base portion, and the second direction is parallel to the lens and perpendicular to the first direction.

8. The photosensitive dimming device according to claim 5, characterized in that, The main body is provided with an interconnected mounting cavity and a wiring cavity. The photosensitive element and the light-emitting end are both located in the mounting cavity, and the portion of the optical fiber located between the light-collecting end and the light-emitting end is disposed in the wiring cavity.

9. The photosensitive dimming device according to any one of claims 1 to 7, characterized in that, It also includes a miniature voltage divider regulator, the input terminal of which is electrically connected to the photosensitive element, and the output terminal of which is electrically connected to the light-emitting element. The miniature voltage divider regulator responds to changes in the electrical parameters of the photosensitive element to adjust the driving current output to the light-emitting element.

10. A portable device with photosensitive dimming function, characterized in that, Includes the photosensitive dimming device as described in any one of claims 1 to 9.

Images