TWM451563U - Lightfiltering switcher for camera lens - Google Patents

Description

Photographic lens switcher

This creation is about filter switches, especially a filter switch for photographic lenses.

The purpose of the filter is to have a specific property of the passing light source after it is emitted. If the normal light source often has invisible light that cannot be seen by the human eye, the invisible light in the incident light source can be filtered by the filter, and the filtered incident light source is directed to the charge coupled device (CCD, Charge-coupled Device). ) or an image sensing device such as a CMOS image sensor, thereby reducing the brightness to a certain extent. Or an infrared night vision goggle, a filter that allows only infrared light to pass through, and then displays the infrared light on the image sensing device. As can be seen from the above, most of the filters are used in video devices, such as cameras and cameras. In the prior art, the image device often uses only one filter in the application of the filter, but the specific filter mechanism enables each filter to be driven by a specific device. The imaging device can have different needs and applications for different environments.

According to the above needs, a switching mechanism for a filter is proposed, which uses a driving motor as a power output source for switching, and cooperates with the control of the electronic circuit to cause a piece of the two filters to slide in a specific space. Switch. But this way is occupied by the motor The specific space, so the overall size of the device is gradually unacceptable for the demand for image products in recent years. As the camera gets smaller and smaller, the related components should be gradually reduced.

Later, another person proposed a method of generating a magnetic force by energizing a coil, and controlling a piece that mounts two filters and two permanent magnets to slide and switch in a specific space. Although this method reduces the volume of the device, it has the disadvantage that it requires a continuous magnetic force for energizing the coil, and a long time of energization causes waste of power, and more heat is generated, and this heat affects the surroundings. The electronic device operates. When the coil is not energized, it means that the sheet body is not controlled or restrained by any device, and will be randomly shaken due to natural force (gravity), thereby causing inconvenience in use.

Therefore, the inventor of this creation needs to conceive a new technology to improve its problems.

Therefore, the purpose of the present invention is to solve the above-mentioned problems in the prior art. In the present invention, a filter switch for a photographic lens is proposed, which aims to improve a conventional filter switching mechanism and use a magnetic metal setting. The metal coil is required to generate a magnetic field without the need for continuous energization as in the prior art to achieve continuous adsorption. Another purpose is to hide the circuit board in this creation, so that the creation can be made in a modular way, in addition to the design of a smaller camera or photographic equipment, to save the overall device space. purpose.

In order to achieve the above object, the present invention provides a filter switch for a photographic lens, comprising: a front cover shell having a front cover through hole at the center thereof, and a mounting area in the front cover case; the front The two sides of the cover case are a first side and a second side, and one metal coil of a certain number of turns is disposed; two magnetic metals are respectively disposed on the first side of the front cover and the second side a sliding piece, which is a rectangular piece, is located in the mounting area for sliding toward the first side or the second side according to driving of the specific device; the sliding piece has a front cover and the front cover a first opening and a second opening corresponding to the hole, wherein the two short sides are respectively provided with a permanent magnet, and each of the permanent magnets respectively faces a metal coil on the first side or the second side; an outer cover, In combination with the front cover case, the sliding piece is encapsulated in the mounting area of the front cover case; the outer cover and the circuit board have an outer cover through hole corresponding to the front cover through hole of the front cover case; a circuit board having a corresponding one of the front cover through holes of the front cover case a circuit board through hole, the circuit board is disposed on the outer surface of the front cover shell in such a manner that the circuit board through hole corresponds to the front cover through hole; therefore, the metal coil is applied by controlling the metal coil on both sides The generated magnetic field controls the moving direction of the sliding piece, and indirectly controls the position of the first opening and the second opening on the sliding piece relative to the front cover through hole; and the attracted permanent magnet is also closest to the side The magnetic metal combination on the side makes it impossible for the attraction between the side and the permanent magnet to disappear when the metal coil current disappears.

The features of the present invention and its advantages can be further understood from the description below, and please refer to the attached drawings when reading.

In view of the structural composition of the case, and the functions and advantages that can be produced, in conjunction with the drawings, a preferred embodiment of the present invention is described in detail below.

Please refer to Figure 1 and Figure 2, the filter switch of the photographic lens of the present invention, comprising: a front cover shell 10 having a front cover through hole 11 in the center of the front cover shell 10; a front mounting portion 12 is disposed in the front cover shell 10; a front side 13 and a first side of the front cover shell 10 The two side edges 14 are respectively provided with a metal coil 15 of a specific number of turns and a magnetic metal 16; each of the metal coils 15 is wound with a wire in a specific direction.

a sliding piece 20, which is a rectangular piece, is located in the mounting area 12 for sliding toward the first side 13 or the second side 14 according to the driving of the specific device; the sliding piece 20 has the front The first through hole 21 and the second opening 22 corresponding to the cover through hole 11 are respectively provided with a permanent magnet 23, 23' on each of the short sides, and each of the permanent magnets 23, 23' faces the first side 13 or One of the metal coils 15 on the second side 14 .

The first side edge 13 and the second side edge 14 each have a hole for receiving the permanent magnets 23, 23' of the side edges 13, 14.

An outer cover 30 is coupled to the front cover 10 such that the sliding piece 20 is encapsulated in the mounting area 12 of the front cover 10; the outer cover 30 and the circuit board 40 have a front cover 10 An outer cover through hole 31 corresponding to the through hole 11 is provided.

A circuit board 40 has a circuit board through hole 41 corresponding to the front cover through hole 11 of the front cover case 10, and the circuit board 40 is disposed in such a manner that the circuit board through hole 41 corresponds to the front cover through hole 11. The outer cover of the front cover 10.

The circuit board 40 is connected to both ends of each of the wires, and a specific control circuit on the circuit board 40 controls any metal coil 15 to generate a current flow sequence or an energization time. As shown in FIGS. 3 and 4, by controlling the energization of the metal coils 15 on both sides, the magnetic field generated by the metal coil 15 is used to control the moving direction of the slider 20, and the slider 20 is indirectly controlled. The positions of the first opening 21 and the second opening 22 with respect to the front cover through hole 11; and the attracted permanent magnet 23 is also combined with the magnetic metal 16 on the closest side, so that when the metal coil 15 is current After disappearing, the attraction between the side and the permanent magnet 23 is not lost and loosened.

The first side 13 and the second side 14 are provided with a plurality of grooves for the metal coil 15 to be easily mounted on the side of the side.

The winding directions of the two metal coils 15 on the first side 13 and the second side 14 are the same direction, and the directions of the magnetic fields generated after the energization are the same; and the two poles of each of the permanent magnets 23, 23' are along the sliding sheet 20 Arranged in the longitudinal direction, meaning that after the permanent magnets 23, 23' are disposed on the sliding sheet 20, the poles of the permanent magnets 23, 23' face in the same direction; or the first side 13 and the second side The winding directions of the two metal coils 15 are reversed, and the magnetic fields generated by the energization are opposite in direction; and the same poles of the permanent magnets 23, 23' are arranged along the longitudinal direction of the sliding sheet 20, meaning the permanent magnets 23, After the 23' is disposed on the slider 20, the same poles of the permanent magnets 23, 23' face in opposite directions.

In the present creation, the energization time of each metal coil 15 may be Power is continued, or power is applied within a specific time range. When the metal coils 15 are electrified within a certain time range, when the metal coil 15 has no current generating magnetic field to adsorb the corresponding permanent magnets 23 on the sliding sheet 20, the magnetic metal 16 on the side functions. And attracting the corresponding permanent magnet 23 so that the sliding piece does not cause looseness when the current coil 15 has no current generating magnetic field.

As shown in FIG. 5, the outer cover 30 has a plurality of holes for connecting the electrical pins on the circuit board 40 to the external devices or the ends of the wires.

As shown in FIG. 6, the outer periphery of the coil 15 on the first side 13 and the second side 14 is covered with a heat shrink film 50 to reduce the occurrence of falling off of the coil and the associated side.

The first opening 21 and the second opening 22 are configured to filter a filter for filtering light of a specific wavelength, such as filtering visible light and filtering infrared.

This application is applied to a camera or photographic equipment in practical applications, and the charge-coupled component (CCD, Charge-coupled Device) or CMOS image sensor in the camera or photographic device is used by the switching mechanism of the creative filter. It is possible to receive an optical element of a specific wavelength by this creation. Photographic devices such as infrared night vision cameras that require special wavelengths of light.

One of the aims of the present invention is to improve the conventional filter switching mechanism by using a magnetic metal arrangement so that the metal coil does not need to be continuously energized to achieve continuous adsorption in the generation of a magnetic field.

Another purpose is to hide the circuit board in this creation, making this creation The production can be made in a modular manner, and in addition to the design of a smaller camera or photographic equipment, the overall device space can be saved.

In summary, the humanized design of this case is quite in line with actual needs. The specific improvement of the existing defects is obviously a breakthrough improvement advantage compared with the prior art, and it has an improvement in efficacy and is not easy to achieve. The case has not been disclosed or disclosed in domestic and foreign literature and market, and has complied with the provisions of the Patent Law.

The detailed description above is a detailed description of one of the possible embodiments of the present invention, and the embodiment is not intended to limit the scope of the patents, and the equivalent implementations or modifications that are not included in the spirit of the present invention should be included in The patent scope of this case.

10‧‧‧ front cover

11‧‧‧Front cover through hole

12‧‧‧Installation area

13‧‧‧ first side

14‧‧‧Second side

15‧‧‧Metal coil

16,16’‧‧‧With magnetic metal

20‧‧‧Slide

21‧‧‧First opening

22‧‧‧Second opening

23,23’‧‧‧ permanent magnet

30‧‧‧ Cover

31‧‧‧Outer cover through hole

40‧‧‧ boards

41‧‧‧Circuit board through hole

50‧‧‧Heat shrink film

The first picture is an exploded view of the creation.

Figure 2 is a combined perspective view of the creation.

Figure 3 is a schematic diagram of the activity of the slide of the creation.

Figure 4 is a schematic view of another activity of the sliding sheet of the creation.

Figure 5 is a perspective view of another combination of the creations.

Figure 6 is a perspective view of another combination of the creations.

10‧‧‧ front cover

11‧‧‧Front cover through hole

12‧‧‧Installation area

13‧‧‧ first side

14‧‧‧Second side

15‧‧‧Metal coil

16,16’‧‧‧With magnetic metal

20‧‧‧Slide

21‧‧‧First opening

22‧‧‧Second opening

23,23’‧‧‧ permanent magnet

30‧‧‧ Cover

31‧‧‧Outer cover through hole

40‧‧‧ boards

41‧‧‧Circuit board through hole

Claims (9)

A filter switch for a photographic lens, comprising: a front cover shell having a front cover through hole at a center thereof; a front mounting cover having a mounting area; the front cover shell having a first side a side and a second side, a metal coil of a specific number of turns; a sliding piece, which is a rectangular piece, is located in the mounting area for driving to the first side or the first according to the driving of the specific device a sliding direction of the two sides; the sliding piece has a first opening and a second opening corresponding to the through hole of the front cover, and each of the short sides is respectively provided with a permanent magnet, and each of the permanent magnets faces the first side Or a metal coil on the second side; an outer cover combined with the front cover case for enclosing the sliding piece in the mounting area of the front cover case; the outer cover and the circuit board having the same a cover through hole corresponding to the cover through hole before the cover; and a circuit board having a circuit board through hole corresponding to the front cover through hole of the front cover case, the circuit board corresponding to the circuit board through hole The front cover through hole is arranged on the outer surface of the front cover shell; Therefore, by controlling the energization of the metal coils on both sides, the magnetic field generated by the metal coil is used to control the moving direction of the sliding sheet, and the first opening and the second opening on the sliding sheet are indirectly controlled relative to the front. Cover the position of the through hole. The filter switch of the photographic lens of claim 1, wherein the winding directions of the two metal coils on the first side and the second side are the same direction, and the magnetic field generated after the energization is the same And the two poles of each permanent magnet are arranged along the length of the sliding sheet Column, meaning that after each permanent magnet is disposed on the sliding piece, the poles of each permanent magnet face in the same direction. The filter switch of the photographic lens of claim 1, further comprising two magnetic metals disposed on the first side and the second side of the front cover, respectively; The permanent magnet attracted by the coil is also combined with the magnetic metal on the closest side, so that when the metal coil current disappears, the attraction between the side and the permanent magnet does not disappear. The filter switch of the photographic lens of claim 1, wherein the winding directions of the two metal coils on the first side and the second side are opposite, and the magnetic field generated in the opposite direction is opposite. And the same pole of each permanent magnet is arranged opposite to each other along the longitudinal direction of the sliding piece, meaning that after the permanent magnets are disposed on the sliding piece, the same poles of the permanent magnets face in opposite directions. The filter switch of the photographic lens of claim 1, wherein the circuit board is connected to an end of each wire, and a current control circuit of the circuit board controls current flow of any metal coil. Sequence or power-on time. The filter switch of the photographic lens of claim 1, wherein the circuit board is adhered to the outer cover, and the electrical pins on the circuit board are connected to the external device or both ends of the wires. The filter switch of the photographic lens of claim 1, wherein the first opening and the second opening are respectively configured to filter a filter of a specific wavelength of light. Filtering of the photographic lens as described in claim 1 The sheet switcher has a heat shrinkable film on the outer side of the coil on the first side and the second side to reduce the phenomenon that the coil and the side of the coil fall off, and has the functions of heat insulation and beauty. The filter switch of the photographic lens of claim 3, wherein the first side and the second side each have a recess for accommodating the permanent magnets on each side.