Filter drive device

Abstract

A filter driving device includes a base, at least one driving module, at least one filter module, and at least one linkage member. The base has a front side and a rear side facing away from each other, and a light-transmitting hole passing through the front side and the rear side. The at least one driving module is disposed on the front side of the base. The at least one filter module is disposed on the rear side of the base. The at least one linkage member is disposed on the base and connected to the at least one driving module and the at least one filter module. The at least one driving module drives the at least one linkage member to move the at least one filter module to switch different filtering modes for light passing through the light-transmitting hole.

Description

Technical Field

[0001] This invention relates to filter driving devices; in particular, it refers to a filter driving device that facilitates miniaturization. Background Technology

[0002] It is known that in order to make cameras suitable for different environments, different filters are generally used to achieve better image quality. For example, when shooting during the day, it is suitable to use an IR (infrared) filter to block infrared rays from entering the visible light and prevent them from affecting the normal image presentation. At night, it is suitable to use an AR (Anti-Reflection) filter to reduce visible light reflection, reduce glare, and improve the brightness of the image or light.

[0003] Existing filter driving devices typically include a driving device, a filter holder, an IR filter, an AR filter, and a base. The driving device, the filter holder, the AR filter, and the IR filter are all disposed on one side of the base. The AR filter and the IR filter are disposed adjacent to each other on the filter holder. The base has a light-transmitting hole and a transverse guide rail. The filter holder is disposed in the transverse guide rail and can be driven by the driving device to move laterally and linearly back and forth on the transverse guide rail. In this way, the AR filter or the IR filter is moved to a position aligned with the light-transmitting hole, thereby switching the filter aligned with the light-transmitting hole and enabling the AR filter or the IR filter to perform its function.

[0004] However, since the driving device, the filter bracket, the AR filter, and the IR filter of the filter driving device are all located on the same plane on one side of the base, and space needs to be reserved inside the base for the filter bracket to move laterally within the base, the filter driving device is prone to becoming too large, which limits its application in cameras. Therefore, the existing filter driving device still needs improvement. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a filter driving device that can effectively reduce the size and has the effect of miniaturizing photographic equipment.

[0006] To achieve the above objectives, the present invention provides a filter driving device comprising a base, at least one driving module, at least one filter module, and at least one linkage member. The base has a front side and a rear side facing away from each other, and a light-transmitting hole penetrating the front side and the rear side. The at least one driving module is disposed on the front side of the base. The at least one filter module is disposed on the rear side of the base. The at least one linkage member is disposed on the base and connects the at least one driving module and the at least one filter module. The at least one driving module drives the at least one linkage member to move the at least one filter module to switch different filtering modes for light passing through the light-transmitting hole.

[0007] The advantage of this invention is that, by designing the at least one driving module and the at least one filter module respectively disposed on the front side and the rear side of the base, the volume can be effectively reduced, thus facilitating the miniaturization of photographic equipment. Attached Figure Description

[0008] Figure 1 This is a perspective view of a filter driving device according to a preferred embodiment of the present invention.

[0009] Figure 2 This is an exploded view of the filter driving device of the preferred embodiment described above.

[0010] Figure 3 This is an exploded view of the filter driving device of the preferred embodiment described above.

[0011] Figure 4 This is a front view of the filter driving device according to the preferred embodiment described above.

[0012] Figure 5 This is a rear view of the filter driving device according to the preferred embodiment described above.

[0013] Figure 6 This is a rear view of the base of the filter driving device according to the preferred embodiment described above.

[0014] Figure 7 This is a schematic diagram of the operation of the filter driving device according to the preferred embodiment described above.

[0015] Figure 8 This is a schematic diagram of the operation of the filter driving device according to the preferred embodiment described above.

[0016] Figure 9 This is a schematic diagram of the operation of the filter driving device according to the preferred embodiment described above. Detailed Implementation

[0017] To more clearly illustrate the present invention, preferred embodiments are described in detail below with reference to the accompanying drawings. Please refer to... Figures 1 to 5 As shown, a filter driving device 1 according to a preferred embodiment of the present invention includes a base 10, two driving modules 20, two filter modules 30, and two linkages 40. In this embodiment, the two driving modules 20 are defined as a first driving module 21 and a second driving module 22, the two filter modules 30 are defined as a first filter module 31 and a second filter module 32, and the two linkages 40 are defined as a first linkage 41 and a second linkage 42.

[0018] The base 10 has a front side 10a and a rear side 10b facing away from each other, and a light-transmitting hole 101 penetrating the front side 10a and the rear side 10b of the base 10; the first driving module 21 and the second driving module 22 are disposed on the front side 10a of the base 10 and respectively disposed on both sides of the light-transmitting hole 101; the first filter module 31 and the second filter module 32 are disposed on the rear side 10b of the base 10; the first linkage 41 and the second linkage 42 are disposed on the base 10, and the first linkage 41 is correspondingly connected to the first driving module 21 and the first filter module 31. The second linkage 42 is correspondingly connected to the second drive module 22 and the second filter module 32. The first drive module 21 drives the first linkage 41 to move the first filter module 31, and the second drive module 22 drives the second linkage 42 to move the second filter module 32, thereby switching different filtering modes for light passing through the light-transmitting hole 101. The design of the two drive modules 20 and the two filter modules 30 respectively located on the front side 10a and the rear side 10b of the base 10 effectively reduces the size, facilitating the miniaturization of photographic equipment. Furthermore, by having one drive module drive one filter module for each switching action, optimal operational efficiency can be achieved.

[0019] In this embodiment, the number of driving modules, filter modules and linkages is two each. In other embodiments, the number of driving modules, filter modules and linkages can be one or more. For example, one driving module can drive one linkage to move one filter module. The filter module can be provided with two different filters to switch different filtering modes for the light passing through the light-transmitting hole.

[0020] Please cooperate. Figure 2The two drive modules are each a solenoid valve, each solenoid valve including a U-shaped iron 201 and a coil 202 disposed on the U-shaped iron. The two linkages 40 respectively include a magnet 401, a rotating shaft 402 and a connecting rod 403. The rotating shaft 402 and the connecting rod 403 are connected to each other. The magnet 401 is disposed on the rotating shaft 402 and each magnet 401 is disposed between the two ends of each U-shaped iron 201. Each coil 202 can be connected to a power source through a wire. In this way, the polarity of the two ends of each U-shaped iron 201 can be changed by controlling the input electrical signal of each coil 202. According to the principle of like poles repulsion and unlike poles attraction, the two ends of each U-shaped iron 201 generate repulsive or attractive forces with the magnetic poles of the magnet 401, thereby causing the rotating shaft 402 to rotate around a fulcrum and drive the connecting rod 403 to swing.

[0021] Please cooperate. Figure 6 The base 10 has two mounting holes 102 and two limiting holes 103. The two mounting holes 102 and the two limiting holes 103 are located around the light-transmitting hole 101 and penetrate the base 10. The rotating shaft 402 of each linkage 40 passes through the corresponding mounting hole 102, and the connecting rod 403 of each linkage 40 passes through the corresponding limiting hole 103. Thus, when each drive module 20 drives the rotating shaft 402 of each linkage 40 to rotate in the mounting hole 102, the connecting rod 403 of each linkage 40 is limited at both ends of the limiting hole 103 and can move between the two ends of the limiting hole 103. Please cooperate. Figure 7 Each of the filter modules 30 includes a filter support 301 and a filter 302. The filter support 301 has a shaft hole 301a and an elongated hole 301b. The rotating shaft 402 passes through the mounting hole 102 of the base 10 and is then inserted into the shaft hole 301a of the filter support 301. The connecting rod 403 passes through the limiting hole 103 of the base 10 and is then inserted into the elongated hole 301b of the filter support 301. In this way, when each of the drive modules 20 drives the rotating shaft 402 of each of the linkages 40 to rotate in the mounting hole 102, it can drive each of the filter modules 30 to rotate around the rotating shaft 402. And because the connecting rod 403 of each of the linkages 40 is restricted by the two ends of the limiting hole 103, each of the filter modules 30 can swing between a working position P1 and an idle position P2.

[0022] Please cooperate. Figures 6 to 7The rear side 10b of the base 10 has a receiving groove 104. The bottom of the receiving groove 104 has the limiting hole 103 and the mounting hole 102. Each filter module 30 is oscillatingly received in the receiving groove 104. The groove walls on opposite sides of the receiving groove 104 each have a limiting part 104a. Each filter module 30 can abut against the limiting part 104a. In this embodiment, the limiting part 104a cooperates with the outer contour of the filter support 301 of the filter module 30, thereby preventing the filter support 301 from shifting relative to the base 10 and keeping it stably in an appropriate position. In addition, since the two drive modules 20 are located on the front side 10a of the base 10, the groove depth design of the receiving groove 104 does not need to take into account the thickness of the two drive modules. Instead, it only needs to be designed with a shallower groove depth to match the thickness of the two filter modules. In this way, the overall volume of the filter drive device 1 can be effectively reduced.

[0023] Please cooperate. Figures 7 to 9 In this embodiment, the first driving module 21 drives the first linkage 41 to swing the first filter module 31, and the second driving module 22 drives the second linkage 42 to swing the second filter module 32, so as to switch different filtering modes for the light passing through the light-transmitting hole 101. In this embodiment, the filtering modes are described using daytime mode M1 and nighttime mode M2 ​​as examples.

[0024] Please cooperate. Figure 7When the filter driving device 1 switches to the daytime mode M1, the first driving module 21 drives the first linkage 41 to move the first filter module 31 to the working position P1, so that the filter of the first filter module 31 is opposite to the light-transmitting hole 101. The filter 302 of the first filter module 31 can be an IR (infrared) filter to block infrared light from entering from the visible environment. The second driving module 22 then drives the first... The two-link actuator 42 moves the second filter module 32 to the idle position P2, causing the filter support 301 of the second filter module 32 to abut against the limiting part 104a of the receiving groove 104, and the filter 302 of the second filter module 32 to move away from the light-transmitting hole 101. The filter 302 of the second filter module 32 can be an AR (Anti-Reflection) filter to reduce visible light reflection, reduce glare, and improve the brightness of images or light. In practice, the filters of the first filter module 31 and the second filter module 32 can also be other types of filters, not limited to the IR (infrared) filter and AR (Anti-Reflection) filter of this embodiment.

[0025] Please continue to cooperate. Figure 8 and Figure 9 When the filter driving device 1 switches from the daytime mode M1 to the nighttime mode M2, it can do so as follows: Figure 8 As shown, by controlling the input of the electrical signal of the first driving module 21, the first filter module 31 is moved to the idle position P2 where it abuts against the limiting part 104a of the receiving groove 104, and so on. Figure 9 As shown, the control input of the second driving module 22 with an electrical signal moves the second filter module 32 to the working position P1, so that the filter 302 of the second filter module 32 is aligned with the light-transmitting hole 101. This achieves the purpose of switching different filtering modes for light passing through the light-transmitting hole 101. In practice, the first driving module 21 and the second driving module 22 can be controlled to operate simultaneously to reduce the operation time of switching modes. It is worth mentioning that inputting electrical signals to the first driving module 21 and the second driving module 22 can respectively drive the first filter module 31 and the second filter module 32 to operate, and when the input electrical signal stops, the first filter module 31 and the second filter module 32 will remain in their original positions without requiring additional current.

[0026] It is worth mentioning that, in this embodiment, the filter driving device 1 includes a lens mount 50 for accommodating a lens. The lens mount 50 is located on the front side 10a of the base body 10 and is integrally formed with the base body 10, thereby effectively simplifying the number of components and the complexity of assembly of the filter driving device 1. In addition, in this embodiment, each driving module 20 is arc-shaped and matches the outer contour of the lens mount 50. In this way, the overall volume of the filter driving device 1 can be further reduced, achieving the purpose of miniaturization.

[0027] In this embodiment, the components are installed and positioned by matching their dimensions and shapes. For example, please refer to the following: Figure 1 and Figure 2 The base 10 has two arc-shaped protrusions 106 on its front side, which are arranged around the outer periphery of the light-transmitting hole 101. During installation, each drive module 20 can achieve a rapid positioning effect by engaging with the arc-shaped protrusions 106.

[0028] In addition, the filter driving device 1 includes two front side covers 60 and a rear cover 70. The two front side covers 60 are detachably connected to the front side 10a of the base 10. Each driving module 20 is sandwiched between a front side cover 60 and the base 10. Each of the two front side covers 60 has a connecting part. The front side 10a of the base 10 has a positioning part on both sides of the light-transmitting hole 101. The connecting part of each front side cover 60 is connected to the positioning part. Further, each front side cover 60... The joint of the 0 has a plurality of side cover positioning posts 61 and a plurality of side cover positioning holes 62. The positioning part of the seat 10 has a plurality of front positioning posts 107 and a plurality of front positioning holes 108 that cooperate with the plurality of side cover positioning posts 61 and the plurality of side cover positioning holes 62. Through the cooperation of the plurality of side cover positioning posts 61 and the plurality of side cover positioning holes 62 with the plurality of front positioning posts 107 and the plurality of front positioning holes 108, each of the drive modules 20 and each of the linkages 40 can be securely clamped between the front side cover 60 and the seat 10.

[0029] Please cooperate again. Figure 3The rear side 10b of the base 10 has a rear opening 10c. The rear cover 70 is detachably attached to the rear side 10b of the base 10 and closes the rear opening 10c. The outer contour of the rear cover 70 has multiple protrusions and recesses that match the shape of the rear opening 10c. The rear cover 70 can be quickly installed on the rear side of the base 10 by positioning the multiple protrusions and recesses with the rear opening 10c. In other words, the components of the present invention are positioned and installed by mutual matching of size and shape, which not only eliminates the need for additional installation tools but also eliminates the need for adhesive to glue the components together. As a result, the installation time is greatly reduced and the assembly process is simplified.

[0030] In summary, by using the filter driving device 1 of the present invention, which respectively arranges the driving modules 20, the linkages 40, and the filter modules 30 on the front side 10a and the rear side 10b of the base 10, the volume can be effectively reduced, thus facilitating the miniaturization of photographic equipment. Furthermore, by having one driving module 20 drive one linkage 40 to drive one filter module 30 for individual switching operations, better operational efficiency can be achieved. Moreover, the present invention, through the mutual matching of the dimensions and shapes of the components for positioning and installation, can significantly reduce installation time and simplify the assembly process.

[0031] The above description is only a preferred embodiment of the present invention. Any equivalent changes made by applying the present invention specification and the claims should be included within the patent scope of the present invention.

[0032] Explanation of reference numerals in the attached figures

[0033] [This invention]

[0034] 1: Filter driving device

[0035] 10: base body

[0036] 101: Light-transmitting hole

[0037] 102: Mounting hole

[0038] 103: Limiting hole

[0039] 104: Receiving groove

[0040] 104a: Limiting part

[0041] 106: Arc-shaped convex wall

[0042] 107: Front positioning post

[0043] 108: Front positioning hole

[0044] 10a: Anterior side

[0045] 10b: Rear side

[0046] 10c: Rear opening

[0047] 20: Driver Module

[0048] 201: U-shaped iron

[0049] 202: Coil

[0050] 21: First drive module

[0051] 22 Second drive module

[0052] 30: Filter Module

[0053] 301: Filter holder

[0054] 301a: Shaft hole

[0055] 301b: Elongated hole

[0056] 302: Filter

[0057] 31: First filter module

[0058] 32: Second filter module

[0059] 40: Linkage components

[0060] 401: Magnet

[0061] 402: Shaft

[0062] 403: Linkage

[0063] 41: First Linkage Component

[0064] 42: Second linkage

[0065] 50: Lens mount

[0066] 60: Front cover

[0067] 61: Side cover positioning post

[0068] 62: Side cover positioning hole

[0069] 70: Back cover

[0070] M1: Daytime Mode

[0071] M2: Night Mode

[0072] P1: Work Location

[0073] P2: Unused space

Claims

1. A filter driving device, comprising: A body having a front side and a rear side facing away from each other, and a light-transmitting hole penetrating the front side and the rear side; At least one drive module is disposed on the front side of the base; At least one filter module is disposed on the rear side of the base; as well as At least one linkage is disposed on the base and connected to the at least one drive module and the at least one filter module; wherein the at least one drive module drives the at least one linkage to move the at least one filter module, thereby switching different filtering modes for light passing through the light-transmitting hole. The number of the at least one driving module is two, the number of the at least one filter module is two, and the number of the at least one linkage is two. Each driving module is respectively disposed on both sides of the light-transmitting hole, and each linkage can be driven by the driving module to move the filter module. Wherein, the two driving modules are a first driving module and a second driving module, the two filter modules are a first filter module and a second filter module, and the two linkages are a first linkage and a second linkage. The first driving module drives the first linkage to move the first filter module, and the second driving module drives the second linkage to move the second filter module, so as to switch different filtering modes for the light passing through the light-transmitting hole.

2. The filter driving device as described in claim 1, wherein, The base has two mounting holes, which are located around the light-transmitting hole and pass through the base. Each of the linkages passes through the corresponding mounting hole, and each of the drive modules can be controlled to drive each linkage to rotate around a fulcrum.

3. The filter driving device as described in claim 2, wherein, Each of the linkages includes a rotating shaft and a connecting rod connected to each other. The base has two limiting holes located around the light-transmitting hole and penetrating the base. Each of the filter modules includes a filter bracket with a shaft hole and an elongated hole. The rotating shaft has the fulcrum and passes through the mounting hole and the shaft hole. The connecting rod passes through the limiting hole and the elongated hole and can move between the two ends of the limiting hole.

4. The filter driving device as described in claim 3, wherein, The rear side of the base has a receiving groove, the bottom of the receiving groove has the limiting hole and the mounting hole, each of the filter modules can be oscillatingly received in the receiving groove, and the groove walls on opposite sides of the receiving groove each have a limiting part, and each of the filter modules can abut against the limiting part.

5. The filter driving device as described in claim 1, wherein, It includes two front side covers that are detachably attached to the front side of the base, and each of the drive modules is sandwiched between one of the front side covers and the base.

6. The filter driving device as described in claim 5, wherein, The two front covers each have a connecting portion, and the front side of the base has a positioning portion on both sides of the light-transmitting hole, with the connecting portion of each front cover engaging with the positioning portion.

7. The filter driving device as claimed in claim 1, wherein, It includes a lens mount, located on the front side of the mount body and integrally formed with the mount body.

8. The filter driving device as claimed in claim 7, wherein, The at least one drive module is arc-shaped and matches the outer contour of the lens mount.

9. The filter driving device as claimed in claim 1, wherein, Includes a rear cover, the rear side of the seat having a rear opening, the rear cover being detachably attached to the rear side of the seat and closing the rear opening.

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