CN212873068U - Multiband optical filter switching device - Google Patents
Multiband optical filter switching device Download PDFInfo
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- CN212873068U CN212873068U CN202021584729.5U CN202021584729U CN212873068U CN 212873068 U CN212873068 U CN 212873068U CN 202021584729 U CN202021584729 U CN 202021584729U CN 212873068 U CN212873068 U CN 212873068U
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- filter switching
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Abstract
The utility model discloses a multiband filter auto-change over device, include: a support portion; the turntable assembly comprises a turntable body and a plurality of narrow-band filters, the turntable body is rotatably connected with the supporting part, a plurality of first through grooves are formed in the turntable body, each first through groove penetrates through the end faces of the two sides of the turntable body, the plurality of narrow-band filters are arranged in the plurality of first through grooves in a one-to-one correspondence mode, and the light transmitting wave bands of the narrow-band filters are different; the driving assembly comprises a driving source, a driving gear and a driven gear, and the driven gear is coaxially fixed on one side of the turntable body; the driving gear comprises a first gear and a second gear, the driving source transmits power to the driven gear coaxially fixed with the turntable body through the driving gear, and tiny circumferential dislocation exists between the first gear and the second gear, so that the clearance during gear meshing is well eliminated, and the positioning accuracy of the meshing position of the gears is improved.
Description
Technical Field
The utility model relates to a technical field is used to the laser, concretely relates to multiband filter auto-change over device.
Background
In the fields of beam splitting, beam energy attenuation, etc., several beams with specific wavelength bands are generally required to be used, and interference may exist in the use of mixed beams, so that it is urgently needed to design a filter switching device to ensure that the beams with different wavelength bands can be automatically and smoothly switched.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned technique not enough, provide a multiband filter auto-change over device, realize the light beam of different wave bands can automatic steady switching.
In order to achieve the above technical object, the present invention provides a multiband optical filter switching device, including:
a support portion;
the turntable assembly comprises a turntable body and a narrow-band filter, the turntable body is rotatably connected with the supporting part, a plurality of first through grooves are formed in the turntable body, each first through groove penetrates through the end faces of two sides of the turntable body, the number of narrow-band filters is multiple, the narrow-band filters are correspondingly installed in the first through grooves one by one, and the light transmission wave bands of the narrow-band filters are different;
the driving assembly comprises a driving source, a driving gear and a driven gear, and the driven gear is coaxially fixed on one side of the turntable body; the driving gear comprises a first gear and a second gear, the first gear and the second gear are sequentially and coaxially arranged along the same axis, the first gear and the second gear are meshed with the driven gear, the first gear can rotate relative to the second gear, an elastic part is arranged between the first gear and the second gear, when the first gear is relative to the second gear rotates along a first direction, the elastic part generates a first torque to the first gear, the first torque is opposite to the first rotation direction, the driving source is installed on the supporting part, and the driving source is in driving connection with the second gear and can drive the second gear to rotate.
Compared with the prior art, the beneficial effects of the utility model include: in the technical scheme, a driving source transmits power to a driven gear coaxially fixed with the turntable body through a driving gear, the driving gear comprises a first gear and a second gear, an elastic part is arranged between the first gear and the second gear, the first gear and the second gear are both meshed with the driven gear, when the first gear rotates along a first direction relative to the second gear, the elastic part generates a first torque to the first gear, the first torque is opposite to the first rotating direction, so that small circumferential dislocation exists between the first gear and the second gear in the rotating process of the driving gear, the gear thickness is increased equivalently, so that the gap during gear meshing is eliminated well, the positioning precision of the gear meshing position is improved, the shaking of the turntable body caused by the meshing gap of the gear can be avoided, and the small circumferential dislocation is elastic due to the existence of the elastic piece, so that the interference in the gear rotating process is avoided.
Drawings
Fig. 1 is a schematic perspective view of an embodiment of a multiband filter switching apparatus according to the present invention;
fig. 2 is a schematic cross-sectional view of an embodiment of a multiband filter switching apparatus according to the present invention;
fig. 3 is a schematic structural diagram of the meshing portion between the driving gear and the driven gear of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, 2 and 3, the present embodiment provides a multiband filter switching device, including: support portion 1, carousel subassembly 2, drive assembly 3.
The turntable assembly 2 comprises a turntable body 21 and narrow-band filters 22, the turntable body 21 is rotatably connected with the supporting portion 1, a plurality of first through grooves are formed in the turntable body 21, each first through groove penetrates through the end faces of two sides of the turntable body 21, the narrow-band filters 22 are multiple, the narrow-band filters 22 are correspondingly installed in the first through grooves one by one, the light transmission wave bands of the narrow-band filters 22 are different, specifically, the first through grooves are arranged along the circumferential array of the turntable body, and a plurality of process holes 21a are formed in the turntable body 21, so that the weight of the turntable body 21 is reduced, and the lightweight design of the device is realized.
The driving assembly 3 comprises a driving source 31, a driving gear 32 and a driven gear 33, wherein the driven gear 33 is coaxially fixed on one side of the turntable body 21; the driving gear 32 includes a first gear 321 and a second gear 322, the first gear 321 and the second gear 322 are coaxially arranged along a same axis in sequence, the first gear 321 and the second gear 322 are both engaged with the driven gear 33, the first gear 321 can rotate relative to the second gear 322, an elastic member 32a is disposed between the first gear 321 and the second gear 322, when the first gear 321 rotates relative to the second gear 322 along a first direction, the elastic member 32a generates a first torque to the first gear 321, the first torque is opposite to the first rotation direction, the driving source 31 is mounted on the supporting portion 1, and the driving source 31 is drivingly connected with the second gear 322 and can drive the second gear 322 to rotate.
The transmission wavebands of the narrowband filters 22 installed in each first through groove are different, the driving assembly 3 drives the turntable body 21 to rotate, so that the different narrowband filters 22 can be sequentially rotated to a predetermined position, when the turntable body 21 is not rotated in specific use, the position of one of the narrowband filters 22 is defined as the predetermined position, and the predetermined position is connected in series to the optical path channel (it can be understood that the narrowband filter 22 is a part of the optical path channel, and other parts of the optical path channel are the environmental characteristics of the application, which will not be described here), so as to realize the switching of the different narrowband filters 22 and reduce the switching difficulty, in the technical scheme, the driving source 31 transmits power to the driven gear 33 coaxially fixed with the turntable body 21 through the driving gear 32, the driving gear 32 includes a first gear 321 and a second gear 322, an elastic member is arranged between the first gear 321 and the second gear 322, the first gear 321 and the second gear 322 are both meshed with the driven gear 33, when the first gear 321 rotates relative to the second gear 322 along a first direction, the elastic member generates a first torque to the first gear 321, the first torque is opposite to the first rotation direction, so that a small circumferential dislocation exists between the first gear 321 and the second gear 322 in the rotation process of the driving gear 32, which is equivalent to increase the tooth thickness, so that the gap in the meshing process of the gears is better eliminated, and due to the existence of the elastic member, the small circumferential dislocation is elastic, so that the interference in the rotation process of the gears is avoided.
Further, the optical axis of each narrowband filter 22 is parallel to the axis of the turntable body, and each narrowband filter 22 is arranged along the circumferential array of the turntable body 21.
In this embodiment, the elastic member is a torsion spring, an axis of the torsion spring is collinear with an axis of the first gear 321, one end of the torsion spring is fixedly connected to the first gear 321, and the other end of the torsion spring is fixed to the second gear 322, and when the first gear 321 rotates relative to the second gear 322, the torsion spring generates a reverse torque.
The first gear 321 is provided with a first arc-shaped groove 321a, an axis of the first arc-shaped groove 321a is coaxial with an axis of the first gear 321, the second gear 322 is provided with a sliding column 322a opposite to one side surface of the first gear 321, the sliding column 322a is slidably connected with the first arc-shaped groove 321a, the first arc-shaped grooves 321a are plural, the first arc-shaped grooves 321a are arranged along a circumferential array of the first gear 321, the sliding column 322a is also plural, the sliding columns 322a are slidably connected with the first arc-shaped grooves 321a in a one-to-one correspondence manner, the first arc-shaped grooves 321a and the sliding columns 322a are used for defining a rotation angle of the first gear 321 relative to the second gear 322, and for convenience of understanding of a reader, what needs to be described here is: the first gear 321 and the second gear 322 have the same number of teeth and the same pitch circle diameter, and the first gear 321 and the second gear 322 are meshed with the same tooth slot of the driven gear 33.
In this embodiment, the supporting portion 1 includes a substrate 11, a first turntable support 12 and a second turntable support 13, the first turntable support 12 and the second turntable support 13 are both fixedly connected to the substrate 11, the first turntable support 12 and the second turntable support 13 are arranged oppositely, a main shaft 21a is disposed in the middle of the turntable body 21 and is coaxially and fixedly connected to the main shaft, one end of the main shaft 21a is rotatably connected to the first turntable support 12, the other end of the main shaft 21a is rotatably connected to the second turntable support 13, the driven gear 33 is coaxially and fixedly connected to the main shaft 21a, and a rotating bearing a is disposed at a rotating connection position.
In this embodiment, the driving source 31 is a stepping motor, both ends of an output shaft of the stepping motor all penetrate out of a housing of the stepping motor, the second gear 322 is coaxially fixed at one end of the output shaft of the stepping motor, the multiband optical filter switching device further comprises an encoder 4, the encoder 4 is arranged at a tail of the driving source 31, the encoder 4 comprises an encoder stator and an encoder rotor, the encoder stator is fixedly connected with the tail of the housing of the stepping motor, the encoder rotor is fixedly connected with the other end of the output shaft of the stepping motor, and the encoder is used for compensating after the stepping motor is out of step, so as to prevent incomplete influence of switching of an optical path channel on a clear aperture (the preset position is located in the optical path channel).
In order to facilitate the positioning of the initial position of the turntable body, the multiband optical filter switching device further comprises a photoelectric switch 5 and a switch baffle 6 matched with the photoelectric switch 5, the switch baffle 6 is connected with one end of the main shaft 21a, which is far away from the driving source 31, along the radial direction of the main shaft 21a, and the photoelectric switch 5 can generate an electric signal once when the main shaft 21a rotates for one circle.
The working principle is as follows: in the technical scheme, the driving source 31 transmits power to a driven gear 33 coaxially fixed with the turntable body 21 through a driving gear, the driving gear 32 comprises a first gear 321 and a second gear 322, an elastic member is arranged between the first gear 321 and the second gear 322, the first gear 321 and the second gear 322 are both meshed with the driven gear 33, when the first gear 321 rotates along a first direction relative to the second gear 322, the elastic member generates a first torque to the first gear 321, the first torque is opposite to the first rotation direction, so that the driving gear 32 rotates, there is little circumferential dislocation between first gear 321 and the second gear 322, has increased the tooth thickness of driving gear 32 in other words, has improved the positioning accuracy of gear engagement position, and can avoid rocking of carousel body 21 that the meshing clearance of gear leads to the clearance when better eliminating the gear engagement, and because the existence of elastic component for this little circumferential dislocation is elastic, thereby has avoided the interference of gear rotation in-process.
The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.
Claims (9)
1. A multi-band filter switching device, comprising:
a support portion;
the turntable assembly comprises a turntable body and a narrow-band filter, the turntable body is rotatably connected with the supporting part, a plurality of first through grooves are formed in the turntable body, each first through groove penetrates through the end faces of two sides of the turntable body, the number of narrow-band filters is multiple, the narrow-band filters are correspondingly installed in the first through grooves one by one, and the light transmission wave bands of the narrow-band filters are different;
the driving assembly comprises a driving source, a driving gear and a driven gear, and the driven gear is coaxially fixed on one side of the turntable body; the driving gear comprises a first gear and a second gear, the first gear and the second gear are sequentially and coaxially arranged along the same axis, the first gear and the second gear are meshed with the driven gear, the first gear can rotate relative to the second gear, an elastic part is arranged between the first gear and the second gear, when the first gear is relative to the second gear rotates along a first direction, the elastic part generates a first torque to the first gear, the first torque is opposite to the first rotation direction, the driving source is installed on the supporting part, and the driving source is in driving connection with the second gear and can drive the second gear to rotate.
2. The multiband filter switching device of claim 1, wherein the optical axis of each narrowband filter is parallel to the axis of the carousel body.
3. The multiband filter switching device of claim 1, wherein the elastic member is a torsion spring having an axis collinear with an axis of the first gear, and wherein one end of the torsion spring is fixedly connected to the first gear and the other end of the torsion spring is fixed to the second gear.
4. The multiband filter switching device of claim 1, wherein the first gear has a first arc-shaped slot, the axis of the first arc-shaped slot is coaxial with the axis of the first gear, and the second gear has a sliding post on a side opposite to the first gear, the sliding post being slidably connected to the first arc-shaped slot.
5. The multiband filter switching device of claim 4, wherein the first arcuate slots are plural, the plural first arcuate slots are arranged along a circumferential array of the first gear, the plural sliding posts are plural, and the plural sliding posts are slidably connected to the plural first arcuate slots in a one-to-one correspondence.
6. The multiband filter switching device of claim 1, wherein the support portion comprises a base plate, a first turntable support and a second turntable support, the first turntable support and the second turntable support are both fixedly connected to the base plate, the first turntable support and the second turntable support are arranged opposite to each other, a main shaft is coaxially and fixedly connected to the main shaft, one end of the main shaft is rotatably connected to the first turntable support, the other end of the main shaft is rotatably connected to the second turntable support, and the driven gear is coaxially and fixedly connected to the main shaft.
7. The multiband filter switching device of claim 1, wherein the drive source is a stepper motor, both ends of an output shaft of the stepper motor penetrate through a housing of the stepper motor, and the second gear is coaxially fixed to one end of the output shaft of the stepper motor.
8. The multiband filter switching device of claim 7, further comprising an encoder disposed at a tail of the driving source, the encoder comprising an encoder stator and an encoder rotor, the encoder stator being fixedly connected to a tail of the casing of the stepping motor, the encoder rotor being fixedly connected to the other end of the output shaft of the stepping motor.
9. The multiband filter switching device of claim 1, wherein the turret body has a plurality of tooling holes formed therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021584729.5U CN212873068U (en) | 2020-07-31 | 2020-07-31 | Multiband optical filter switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021584729.5U CN212873068U (en) | 2020-07-31 | 2020-07-31 | Multiband optical filter switching device |
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| Publication Number | Publication Date |
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| CN212873068U true CN212873068U (en) | 2021-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021584729.5U Active CN212873068U (en) | 2020-07-31 | 2020-07-31 | Multiband optical filter switching device |
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| CN (1) | CN212873068U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113671688A (en) * | 2021-07-27 | 2021-11-19 | 南京大学 | Broad-spectrum adjustable ultra-narrow bandpass filtering system |
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2020
- 2020-07-31 CN CN202021584729.5U patent/CN212873068U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113671688A (en) * | 2021-07-27 | 2021-11-19 | 南京大学 | Broad-spectrum adjustable ultra-narrow bandpass filtering system |
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