CN216670473U

CN216670473U - Dustproof double-optical-filter switcher

Info

Publication number: CN216670473U
Application number: CN202123020203.1U
Authority: CN
Inventors: 蔡涛; 李育峰
Original assignee: Dongguan Sanzhong Electric Appliance Technology Co ltd
Current assignee: Dongguan Sanzhong Electric Appliance Technology Co ltd
Priority date: 2021-12-04
Filing date: 2021-12-04
Publication date: 2022-06-03
Anticipated expiration: 2031-12-04

Abstract

A dust-proof dual-filter switcher comprises a front shell, a rear shell buckled with the front shell, a switching device and a transmission device which are arranged in a buckling body of the front shell and the rear shell, wherein a rear light-sensitive window is arranged in the middle of the rear shell, it is characterized in that a dust shielding sheet is attached to the rear light sensing window, the dust shielding sheet is a full-transmission spectrum filter, which is hermetically attached to the outer side of the rear light sensing window, the switching device comprises a switching bracket, a full-transmission spectrum filter and an infrared cut-off filter which are arranged on the switching bracket, the transmission device comprises a U-shaped iron, a winding frame arranged at the front end of the U-shaped iron, a coil arranged on the winding frame, a magnetic block arranged at the rear end of the U-shaped iron, and a swing rod arranged on the magnetic block.

Description

Dustproof double-optical-filter switcher

Technical Field

The utility model relates to the technical field of cameras, in particular to a dustproof double-optical-filter switcher.

Background

With the rapid development of the image pickup technology, people have new requirements on the image pickup equipment, and factors affecting the image pickup effect include intrinsic factors and extrinsic factors, wherein the intrinsic factors include the focal length and the image field angle of a camera lens, and the extrinsic factors include ambient light and dust. The development of the existing camera is biased to improve the internal factors, and the influence of the external factors is usually ignored. In order to overcome the influence of ambient light to the effect of making a video recording, people have developed two filter switches, switch into infrared cut-off filter when making a video recording daytime, switch into the total transmission spectrum filter when making a video recording night, although the influence of ambient light to making a video recording has been solved, however, the switching back and forth of two filter switches, because of the friction between each part produces a large amount of small dust particles, although these small dust particles are difficult to see by naked eye, but can directly fall into the mainboard, adhere to the photosensitive chip surface, influence to the effect of making a video recording is greater than the influence of ambient light to the effect of making a video recording far away.

Disclosure of Invention

In view of the above problems in the art, the present invention provides a dual-filter switch for preventing dust from entering the surface of a photosensitive chip.

The utility model comprises a front shell, a rear shell buckled with the front shell, a switching device and a transmission device which are arranged in a buckling body of the front shell and the rear shell, wherein a rear light-sensitive window is arranged in the middle of the rear shell; a front light sensing window is arranged in the left middle of the front shell, a switching device position is arranged on the front light sensing window, a transmission device mounting position is arranged on the right of the front shell, and a rotating shaft is arranged on the left side of the transmission device mounting position; a switching device is arranged in the switching device position, and a transmission device is arranged in the transmission device mounting position; and a dust shielding sheet is attached to the rear light sensing window.

The dust shielding sheet is a full-transmission spectrum filter and is hermetically attached to the outer side of the rear light sensing window.

The switching device comprises a switching support, a connector arranged at the right end of the switching support, and a filter mounting position arranged at the left middle part of the switching support, wherein a full-transmittance spectrum filter and an infrared cut-off filter are arranged in the filter mounting position.

The transmission device comprises a U-shaped iron, a winding frame arranged at the front end of the U-shaped iron, a coil arranged on the winding frame, a magnetic block arranged at the rear end of the U-shaped iron, and a swing rod arranged on the magnetic block.

The rear end of the U-shaped iron is provided with a circular electromagnetic induction port, and the magnetic block is installed in the electromagnetic induction port.

The left end top of pendulum rod is equipped with the swing end, and right-hand member bottom is provided with the stiff end, the center of stiff end is equipped with perpendicular shaft hole, swing end articulates with connector movably mutually, the stiff end is fixed mutually with the magnetic path.

Furthermore, the rotating shaft vertically penetrates through the magnetic block and the fixed end upwards and penetrates out of the vertical shaft hole, and the magnetic block and the fixed end are rotatably fixed together.

Further, under the electromagnetic induction, the magnetic block can rotate around the rotating shaft.

Further, the rear light sensing window and the front light sensing window are respectively arranged corresponding to the full-transmission spectrum filter or the infrared cut-off filter.

Further, under the action of the swing rod, the switching bracket drives the full-transmittance spectrum filter and the infrared cut-off filter to perform switching movement back and forth, and the full-transmittance spectrum filter and the infrared cut-off filter exchange positions once every time the full-transmittance spectrum filter and the infrared cut-off filter are switched.

Furthermore, a PIN PIN jack is arranged at the front end of the winding frame, a PIN PIN is inserted into the PIN PIN jack, and the PIN PIN is connected with a terminal wire.

The utility model has the beneficial effect of effectively solving the problem that a large amount of tiny dust particles generated by the movement friction of the camera filter switching device affect the image pickup effect.

Drawings

Fig. 1 is a diagram showing the overall effect of the present invention.

Fig. 2 is an exploded view of the structure of the present invention.

Fig. 3 is a view showing the installation structure of the dust-proof sheet of the present invention on the rear case.

Fig. 4 is a structural view of the switching device of the present invention.

Fig. 5 is a structural view of the transmission of the present invention.

Detailed Description

As shown in fig. 1, the present invention is a dual-filter switch for dust protection.

As shown in fig. 2, the present invention includes a front housing 1, a rear housing 5 fastened to the front housing 1, and a switching device and a transmission device installed in a fastening body of the front housing 1 and the rear housing 5, wherein a rear light-sensing window 51 is disposed in the middle of the rear housing 5; a front light sensing window 12 is arranged in the left middle of the front shell 1, a switching device position 14 is arranged above the front light sensing window 12, a transmission device mounting position 13 is arranged at the right part of the front shell 1, and a rotating shaft 11 is arranged on the left side of the transmission device mounting position 13; a switching device is arranged in the switching device position 14, and a transmission device is arranged in the transmission device mounting position 13; the rear light-sensing window 51 is attached with a dust-shielding sheet 6.

As shown in fig. 2 and 3, the dust-shielding sheet 6 is a full-transmission spectral filter, and is hermetically attached to the outside of the rear light-sensing window 51.

As shown in fig. 4, the switching device includes a switching bracket 2, a connection port 21 disposed at the right end of the switching bracket 2, and a filter installation site 22 disposed at the left middle part of the switching bracket 2, wherein a full-transmittance spectral filter 4 and an infrared cut filter 3 are installed in the filter installation site 22.

As shown in fig. 5, the transmission device includes a U-shaped iron 9, a bobbin 10 mounted at the front end of the U-shaped iron 9, a coil 15 mounted on the bobbin 10, a magnetic block 8 mounted at the rear end of the U-shaped iron 9, and a swing link 7 mounted on the magnetic block 8.

As shown in fig. 2, a circular electromagnetic induction port 91 is formed in the rear end of the U-shaped iron 9, and the magnetic block 8 is installed in the electromagnetic induction port 91. The top of the left end of the swing rod 7 is provided with a swing end 71, the bottom of the right end is provided with a fixed end 72, the center of the fixed end 72 is provided with a vertical shaft hole 73, the swing end 71 is movably connected with the connecting port 21, and the fixed end 72 is fixed with the magnetic block 8. The rotating shaft 11 vertically passes through the magnetic block 8 and the fixing end 72 upwards, and penetrates out of the vertical shaft hole 73, so that the magnetic block 8 and the fixing end 72 are rotatably fixed together. Under electromagnetic induction, the magnetic block 8 can rotate around the rotating shaft 11. The rear light-sensing window 51 and the front light-sensing window 12 are respectively arranged corresponding to the full-transmittance spectral filter 4 or the infrared cut-off filter 3. Under the action of the swing rod 7, the switching bracket 2 drives the full-transmission spectrum filter 4 and the infrared cut-off filter 3 to do switching movement back and forth, and the full-transmission spectrum filter 4 and the infrared cut-off filter 3 exchange positions once every time switching is performed. The front end of the bobbin 10 is provided with a PIN jack 101, a PIN 11 is inserted into the PIN jack 101, and the PIN 11 is connected with a terminal wire 13.

When the switching bracket 2 is used, the coil 15 is electrified through the terminal wire 13, the transmission device generates magnetic force under the action of electromagnetic induction to drive the magnetic block 8 to rotate, and the swing rod 7 fixed on the magnetic block 8 swings along with the rotation of the magnetic block 8, so that the switching bracket 2 is pulled to move back and forth.

Claims

1. The utility model provides a dustproof two filter switches, includes preceding shell (1), with backshell (5) of preceding shell (1) looks lock joint, and install preceding shell (1) and the internal auto-change over device of backshell (5) lock and transmission, the centre of backshell (5) is equipped with back sensitization window (51), characterized by, back sensitization window (51) facing is equipped with hides dirt piece (6), it is the full transmission spectrum filter to hide dirt piece (6), its sealed the laminating in the outside of back sensitization window (51).

2. The dust-proof dual-filter switcher of claim 1, wherein the switcher comprises a switching bracket (2), a connecting port (21) arranged at the right end of the switching bracket (2), and a filter mounting position (22) arranged at the left middle part of the switching bracket (2), wherein the filter mounting position (22) is internally provided with a full-transmission spectrum filter (4) and an infrared cut-off filter (3), the switching bracket (2) carries the full-transmission spectrum filter (4) and the infrared cut-off filter (3) to make switching movement back and forth, and the full-transmission spectrum filter (4) and the infrared cut-off filter (3) exchange positions once per switching.

3. The dust-proof dual-filter switcher of claim 1, wherein the transmission device comprises a U-shaped iron (9), a bobbin (10) mounted at the front end of the U-shaped iron (9), a coil (15) mounted on the bobbin (10), a magnetic block (8) mounted at the rear end of the U-shaped iron (9), and a swing rod (7) mounted on the magnetic block (8).

4. The dust-proof dual-filter switcher of claim 3, wherein a front light sensing window (12) is arranged at the left middle part of the front housing (1), a switching device position (14) is arranged on the front light sensing window (12), a transmission device mounting position (13) is arranged at the right part of the front housing (1), and a rotating shaft (11) is arranged at the left side of the transmission device mounting position (13); a switching device is arranged in the switching device position (14), and a transmission device is arranged in the transmission device mounting position (13).

5. The dust-proof dual-filter switcher of claim 4, wherein a circular electromagnetic induction port (91) is formed in the rear end of the U-shaped iron (9), and the magnetic block (8) is installed in the electromagnetic induction port (91).

6. The dust-proof dual-filter switcher of claim 4, wherein the swing rod (7) is provided with a swing end (71) at the top of the left end and a fixed end (72) at the bottom of the right end, the fixed end (72) is provided with a vertical shaft hole (73) at the center, the swing end (71) is movably connected with the connecting port (21), and the fixed end (72) is fixed with the magnetic block (8).

7. The dual-filter switcher of claim 5 or 6, wherein the rotation shaft (11) vertically passes through the magnet (8) and the fixed end (72) upwards, and passes through the vertical shaft hole (73), and the magnet (8) and the fixed end (72) are rotatably fixed together.

8. The dust-proof dual-filter switcher of claim 3, 5 or 6, wherein the magnetic block (8) can rotate around the rotating shaft (11) under electromagnetic induction.

9. The dust-proof dual-filter switcher of claim 4, wherein the rear light-sensing window (51) and the front light-sensing window (12) are respectively arranged corresponding to the full-transmittance spectral filter (4) or the infrared cut-off filter (3).

10. The dust-proof dual-filter switcher of claim 3, wherein a PIN jack (101) is arranged at the front end of the bobbin (10), a PIN (102) is inserted into the PIN jack (101), and a terminal line is connected to the PIN (102).