An electromagnetic shielding filter switching lens mount

Abstract

The present invention discloses an electromagnetic shielding filter switching lens mount, which is characterized in that: it includes a lens mount, a fixing member, a filter assembly and a driving assembly. The fixing member and the driving assembly are both installed inside the lens mount, and the filter assembly is installed inside the fixing member. The fixing member includes a fixing member body, a limiting sliding groove, a grounding block, a first light channel, and a partial limiting block guiding sliding groove. The limiting sliding groove is opened on the side of the fixing member body opposite to the motor, a grounding block is provided at the bottom of the fixing member body, the light passing channel 1 is arranged in the middle of the top of the fixing member body, and the limiting block guiding sliding groove is arranged on the side of the fixing member body adjacent to the motor. The present invention is small in size, shock-resistant, and can be widely applied to various imaging chips with a 1 / 2" target surface and below, and various telephoto and wide-angle lenses. It is easy to install, has stable performance, blocks useless peripheral light, and has the function of shielding electromagnetic radiation.

Description

Technical Field

[0001] The present invention belongs to the technical field of optical filters, and particularly relates to an electromagnetic shielding filter switching lens mount. Background Art

[0002] At present, cameras highly integrate optical imaging modules, display screens, wireless transmission, GPS modules, and Beidou modules, and their shapes tend to be miniaturized. However, most of the filter switches on the market are pendulum and drawer structures, which not only have large volumes and poor anti-vibration effects, but also lack electromagnetic shielding functions. When the imaging chip works, it emits strong electromagnetic radiation externally, seriously interfering with and even shielding satellite positioning signals, resulting in the inability to receive satellite signals normally. Summary of the Invention

[0003] The purpose of the present invention is to provide an electromagnetic shielding dual-filter switching lens mount, aiming to solve the problems existing in the above background art. To achieve the above purpose, the technical solution adopted by the present invention is:

[0004] An electromagnetic shielding filter switching lens mount includes a lens mount, a fixing member, a filter assembly, and a driving assembly. The fixing member is installed inside the lens mount, the driving assembly is installed inside the lens mount, and the filter assembly is installed inside the fixing member.

[0005] Preferably, the fixing member includes a fixing member body, a limiting sliding groove, a grounding block, a first light channel, and a limiting block guiding sliding groove. The limiting sliding groove is opened on the side of the fixing member body opposite to the motor. The bottom of the fixing member body is provided with a grounding block, and an included angle θ of 90-150° is formed between the grounding block and the side of the fixing member body. A grounding block installation opening is opened at the bottom of the lens mount corresponding to the grounding block; the first light channel is arranged in the middle of the top of the fixing member body, and the limiting block guiding sliding groove is arranged on the side of the fixing member body adjacent to the motor.

[0006] Preferably, a second light channel is opened inside the top of the lens mount, a motor installation position is opened inside the lens mount, a motor installation hole is opened on the outside of the lens mount corresponding to the rear end installation position of the motor, a notch is opened at the bottom of the motor installation hole or it is a fully enclosed design, and installation holes are provided on the left and right sides or the upper and lower sides of the outside of the lens mount.

[0007] Preferably, an avoidance space for the transmission positioning device is provided at the front end of the motor installation position corresponding to the motor, a limiting block avoidance space is provided at the side of the motor installation position corresponding to the motor, and a lens thread is provided inside the second light channel.

[0008] Preferably, the filter assembly includes a frame-shaped bracket and a filter installed on the frame-shaped bracket.

[0009] Preferably, the driving assembly includes a motor, a transmission positioning device, and a transmission nut. The transmission positioning device is installed at the front end of the motor and is located on the side of the frame-shaped bracket. The transmission nut is fixedly connected to the frame-shaped bracket and is in threaded engagement with the transmission positioning device for driving the frame-shaped bracket to drive the filter back and forth reciprocally.

[0010] Preferably, a filter placement position is provided on the frame-shaped bracket. One side of the tail end of the frame-shaped bracket extends and bends to form a limiting block, and two sliding limiting blocks are formed by extending the opposite side of the limiting block of the frame-shaped bracket. The limiting block is used to be placed in the limiting block guiding chute, and the two sliding limiting blocks are used to be placed in the limiting chute.

[0011] Preferably, the transmission nut includes an internal thread of the nut and left and right positioning convex positions extending outwards. The transmission nut is located at the front end of the limiting block.

[0012] Preferably, the transmission positioning device includes a screw rod, an external thread, a left limiting block, a right limiting block, a left rotating convex position, and a right rotating convex position. The external thread is sleeved on the screw rod, and the left and right limiting blocks are respectively formed by extending outwards at both ends of the external thread. After the limiting blocks extend, they bend to form the left and right rotating convex positions. When the positioning convex position abuts against the rotating convex position, the screw rod stops rotating and the transmission nut stops moving.

[0013] Preferably, the fixing member is made of a metal material and functions to shield electromagnetic radiation. A dust-proof and light-transmitting glass is provided on the first light channel.

[0014] The beneficial effects of the present invention are as follows: The installation is simple. Only by installing the fixing member externally and then transplanting it to the lens mount can the installation be completed. The maintenance is convenient. For damaged parts, targeted replacement can be carried out, reducing the cost investment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is an overall schematic diagram provided by an embodiment of the present invention;

[0016] Figure 2 is a split structure schematic diagram provided by an embodiment of the present invention;

[0017] Figure 3 is a lens mount structure schematic diagram provided by an embodiment of the present invention;

[0018] Figure 4 is a combined structure schematic diagram of the fixing member and the filter assembly provided by an embodiment of the present invention;

[0019] Figure 5 is a fixing member structure schematic diagram provided by an embodiment of the present invention;

[0020] Figure 6 Schematic structural diagram of the filter component according to an embodiment of the present invention;

[0021] Figure 7 Schematic structural diagram of another embodiment of the grounding block according to an embodiment of the present invention;

[0022] Figure 8 Schematic structural diagram of a fully enclosed example at the bottom of the motor mounting hole according to an embodiment of the present invention;

[0023] Figure 9 Schematic structural diagram of an example with a notch provided at the bottom of the motor mounting hole according to an embodiment of the present invention;

[0024] Figure 10 Schematic structural diagram of an embodiment with the mounting holes arranged vertically and horizontally according to an embodiment of the present invention.

[0025] Among them, the reference numerals in the figures:

[0026] 1, lens holder; 11, lens thread; 12, motor mounting hole; 13, motor mounting position; 14, clearance position; 15, grounding block mounting opening; 2, fixing member; 21, limiting chute; 22, outer cover plate; 23, grounding block; 24, light channel; 25, limiting block guiding chute; 26, fixing member body; 3, filter component; 31, motor; 32, limiting block; 33, filter sheet placement position; 34, sliding limiting block; 35, transmission nut; 351, left positioning convex position; 352, right positioning convex position; 353, internal thread of nut; 36, transmission positioning device; 361, screw; 362, left rotating convex position; 363, left limiting block; 364, external thread; 365, right rotating convex position; 366, right limiting block; 37, frame-shaped bracket; 4, filter sheet; 5, mounting hole. Detailed implementation manners

[0027] For ease of understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0028] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. On the contrary, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation. The terms "upper end", "lower end", "left side", "right side", "front end", "rear end" and similar expressions used herein refer to the positional relationship in the attached drawings.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this invention belongs. The terms used in the specification of this invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0030] The technical solutions of this patent will be further described in detail below in conjunction with specific embodiments.

[0031] Embodiment 1:

[0032] As Figures 1 to 6 shown, the embodiment of the present invention provides a novel dual-filter switching lens mount, which includes a lens mount 1, a fixing member 2 and a filter assembly 3. The filter assembly 3 is installed inside the lens mount 1, and the fixing member 2 is installed inside the lens mount 1. The fixing member 2 includes a fixing member body 26, a limit sliding groove 21, grounding blocks 23, 24, a first light channel 25, and a limit block fixing groove 26. The limit sliding groove 21 is opened on the side of the fixing member body 27. An outer cover plate 22 is provided on the periphery of the fixing member body 27. A grounding block 23 is provided at the bottom of the outer cover plate 22. An included angle θ of 90-150° is formed between the outer cover plate 22 and the grounding block 23. A grounding block installation opening 15 is opened at the bottom of the lens mount 1 corresponding to the grounding block 23; the first light channel 25 is provided in the middle of the top of the fixing member body 26, and the limit block fixing groove 26 is provided on the side of the rear end of the fixing member body 27 adjacent to the motor. As Figure 1 shown, mounting holes are provided on the left and right sides of the outside of the lens mount. A second light channel is opened on the inner side of the top of the lens mount 1. The inner wall of the second light channel is provided with a lens thread 11. A motor installation position 13 is opened on the inner side of the lens mount 1. An avoidance position 14 for the transmission positioning device 36 is provided at the front end of the motor installation position 13 corresponding to the motor, and a limit block avoidance position is provided on the side of the motor installation position corresponding to the motor.

[0033] The filter component 3 includes a filter support. Two filter plates 4 are installed on the filter support. The drive component is installed on the side of the filter support and is used to drive the filter support to drive the filter plate 4 to reciprocate back and forth. The drive component includes a motor 31 and a transmission positioning device 36 connected to the output end of the motor 31. The filter support includes a frame-shaped support 37. Two filter plate placement positions 33 are provided in the middle of the frame-shaped support 37. One side of the tail end of the frame-shaped support 37 is bent to form a limit block 32. When installed, the limit block 32 just fits and installs with the limit block fixing groove 26 on the fixing part 2. A twisted transmission nut 35 is provided at the front end of the limit block 32. The transmission nut 35 is connected to the transmission positioning device 36. Two sliding limit blocks 34 are formed by extending the opposite side edges of the limit block 32 of the frame-shaped support 37, and the two sliding limit blocks 34 are respectively used to be placed in the limit sliding grooves 21.

[0034] The transmission nut 35 includes an internal thread 353 of the nut and a left positioning convex position 351 and a right positioning convex position 352 extending outwards. The transmission nut is located at the front end of the limit block 32.

[0035] The transmission positioning device 36 includes a screw 361, an external thread 364, a left limit stop 363, a right limit stop 366, a left rotation convex position 362 and a right rotation convex position 365; the external thread 364 is sleeved on the screw 361. The two ends of the external thread 364 extend outwards to form a left limit stop 363 and a right limit stop 366 respectively. After the left limit stop 363 and the right limit stop 366 extend respectively, they are bent to form a left rotation convex position 362 and a right rotation convex position 365; when the two positioning convex positions abut against the corresponding rotation convex positions, the screw 361 stops rotating and the transmission nut 35 stops moving.

[0036] When installing this lens mount, after installing the fixing part 2 into the lens mount 1, connect the motor 31 and the frame-shaped support 37, then install them into the lens mount 1 and cover them with the fixing part 2. Insert the sliding limit blocks 34 into the limit sliding grooves 21 to complete the installation.

[0037] Specifically, the fixing part 2 is made of a metal material and plays a role in shielding electromagnetic radiation.

[0038] Embodiment 2:

[0039] As Figure 5 shown, a dust-proof and light-transmitting glass can also be selectively provided on the first optical channel 24. After the dust-proof and light-transmitting glass is provided, when the top lens mount 1 installs a lens, it can prevent dust from falling onto the filter plate 4 or the imaging chip, avoiding affecting the imaging.

[0040] Embodiment 3:

[0041] As Figure 8As shown, a motor mounting hole 12 is provided on the outer side of the lens mount 1 corresponding to the motor mounting position 13. The bottom of the motor mounting hole is designed to be fully enclosed. The advantage of the full enclosure is that when the lens mount 1 is mounted on the circuit board, it can make good contact with the circuit board, thus maximizing the avoidance of external dust entering the inside of the lens mount 1.

[0042] Embodiment 4:

[0043] As Figure 9 shown, a motor mounting hole 12 is provided on the outer side of the lens mount 1 corresponding to the motor mounting position 13. A notch is provided at the bottom of the motor mounting hole 12. The provision of the notch is a conventional design for this lens mount 1. In the case of providing the notch, it will be more convenient to install the wires of the motor.

[0044] Embodiment 5:

[0045] As Figure 10 shown, mounting holes 5 are provided on the upper and lower sides of the lens mount 1. At this time, copper nuts can be provided in the mounting holes according to needs.

[0046] The present invention is convenient to maintain. While the fixed member is provided to perform electromagnetic shielding on the useless peripheral light and signals, at the same time, the first optical channel is provided with a dust-proof and light-transmitting glass, which can maximize the reduction of the influence of dust on the chip, and the metal fixed member and the motor cooperate to play a role in shielding electromagnetic radiation.

[0047] The above embodiments are only used to illustrate the present invention, rather than to limit the present invention. Those of ordinary skill in the relevant technical field can also make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention. The patent protection scope of the present invention shall be defined by the claims.

Claims

1. An electromagnetic shielding filter switching lens mount, characterized in that: It includes a lens mount, a fixing member, a filter component, and a driving component. The fixing member is installed inside the lens mount, the driving component is installed inside the lens mount, and the filter component is installed inside the fixing member. The fixing member includes a fixing member body, a limiting sliding groove, a grounding block, a first light channel, and a limiting block guiding sliding groove. The limiting sliding groove is opened on the side of the fixing member body opposite to the motor. A grounding block is provided at the bottom of the fixing member body. The grounding block forms an included angle θ of 90 - 150° with the side of the fixing member body. A grounding block installation opening is provided at the bottom of the lens mount corresponding to the grounding block. The first light channel is provided in the middle of the top of the fixing member body. The limiting block guiding sliding groove is provided on the side of the fixing member body adjacent to the motor. The filter component includes a frame-shaped bracket and a filter installed on the frame-shaped bracket. The driving component includes a motor, a transmission positioning device, and a transmission nut. The transmission positioning device is installed at the front end of the motor and is located on the side of the frame-shaped bracket. The transmission nut is fixedly connected to the frame-shaped bracket and is in threaded engagement with the transmission positioning device for driving the frame-shaped bracket to drive the filter to reciprocate back and forth. A filter placement position is provided on the frame-shaped bracket. One side of the tail end of the frame-shaped bracket extends and is bent to form a limiting block. Two sliding limiting blocks are formed by extending the side opposite to the limiting block of the frame-shaped bracket. The limiting block is used to be placed in the limiting block guiding sliding groove, and the two sliding limiting blocks are used to be placed in the limiting sliding groove.

2. The electromagnetic shielding filter switching lens mount according to claim 1, wherein: A second light channel is opened on the inner side of the top of the lens mount. A motor installation position is provided on the inner side of the lens mount. A motor installation hole is provided on the outer side of the lens mount corresponding to the installation position at the rear end of the motor. A notch is provided at the bottom of the motor installation hole or it is a fully enclosed design. Installation holes are provided on the left and right sides or the upper and lower sides of the outer side of the lens mount.

3. The electromagnetic shielding filter switching lens mount according to claim 2, characterized in that: A clearance position for the transmission positioning device is provided at the front end of the motor corresponding to the motor installation position. A clearance position for the limiting block is provided at the side of the motor corresponding to the motor installation position. A lens thread is provided in the second light channel.

4. An electromagnetic shielding filter switching lens mount according to claim 1, characterized in that: The transmission nut includes an internal thread of the nut and left and right positioning convex positions extending outward. The transmission nut is located at the front end of the limiting block.

5. An electromagnetic shielding filter switching lens mount according to claim 1, characterized in that: The transmission positioning device includes a screw rod, an external thread, a left limiting block, a right limiting block, a left rotation convex position, and a right rotation convex position. The external thread is sleeved on the screw rod. The left and right limiting blocks are respectively formed by extending the two ends of the external thread outward. After the limiting blocks extend, they are bent to form the left and right rotation convex positions. When the positioning convex position abuts against the rotation convex position, the screw rod stops rotating and the transmission nut stops moving.

6. The electromagnetic shielding filter switching lens mount according to claim 1, wherein: The fixing member is made of a metal material and plays a role in shielding electromagnetic radiation. A dust-proof and light-transmitting glass is provided on the first light channel.

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