CN110737087B - Diaphragm - Google Patents
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- CN110737087B CN110737087B CN201910726778.3A CN201910726778A CN110737087B CN 110737087 B CN110737087 B CN 110737087B CN 201910726778 A CN201910726778 A CN 201910726778A CN 110737087 B CN110737087 B CN 110737087B
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- positioning plate
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- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 230000005540 biological transmission Effects 0.000 claims description 10
- 238000005452 bending Methods 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 5
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000013000 roll bending Methods 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/02—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Diaphragms For Cameras (AREA)
Abstract
The invention discloses a diaphragm, which comprises a positioning plate with light transmitting holes, an adjusting plate parallel to the positioning plate and provided with a plurality of diaphragm holes with different apertures, and an adjusting assembly sequentially penetrating through the positioning plate and the adjusting plate, wherein the adjusting assembly can drive the adjusting plate to slide along the axial direction of the light transmitting holes so as to be tightly attached to or far away from the positioning plate, and can also drive the adjusting plate to rotate relative to the positioning plate along the circumferential direction of the light transmitting holes when the adjusting plate is far away from the positioning plate until any diaphragm hole is aligned with the light transmitting hole, so that the diaphragm holes with different apertures are aligned with the light transmitting holes alternatively, and. The aperture of the diaphragm hole is adjusted mainly by a plurality of formed diaphragm holes without depending on a plurality of diaphragm sheets, so that the phenomenon of unsmooth aperture adjustment caused by the clamping stagnation of the diaphragm sheets is avoided; the adjusting plate rotates when being far away from the positioning plate, so that the adjusting plate and the positioning plate are prevented from being seriously abraded due to contact rotation; therefore, the diaphragm provided by the invention has higher service life and working reliability.
Description
Technical Field
The invention relates to an optical device, in particular to a diaphragm.
Background
The diaphragm is an important parameter in the optical system, and can adjust the numerical aperture of the optical system, change the field of view of the optical system and vignetting. For promoting the adaptability, common diaphragm is mostly the iris diaphragm, and the iris diaphragm is fixed in solid fixed ring through the fixed pin including solid fixed ring, loose ring and a plurality of diaphragm piece, the one end of arbitrary diaphragm piece, and the other end is installed in the loose ring through the loose pin, and when rotating the loose ring, the loose ring promotes the rotation of loose pin, and the loose pin drives the diaphragm piece and uses the fixed pin to rotate as the fulcrum to realize changing the aperture in diaphragm hole. Although an iris diaphragm enables continuous adjustment of the size of the diaphragm aperture, it has a number of disadvantages.
Firstly, because two adjacent diaphragm plates are partially overlapped and the diaphragm plates need to be frequently rotated, the diaphragm plates are extremely easy to be seriously worn, the service life of the diaphragm plates is seriously influenced, and the service life of the diaphragm plates is further influenced;
secondly, the number of the related diaphragm sheets is large, and the rotation of the diaphragm sheets is mostly matched by the pin holes, so that the diaphragm sheets are easy to be blocked in the rotation process, and the working reliability of the diaphragm becomes relatively poor.
Therefore, how to optimize the existing diaphragm structure to improve the service life and the working reliability of the diaphragm is a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides a diaphragm having a long service life and high operational reliability.
The specific scheme is as follows:
the present invention provides a diaphragm, comprising:
a positioning plate having a light hole;
the adjusting plate is parallel to the positioning plate and is provided with a plurality of diaphragm holes with different apertures;
the adjusting component sequentially penetrates through the positioning plate and the adjusting plate and is used for driving the adjusting plate to slide along the axial direction of the light-transmitting hole so as to be close to or far away from the positioning plate; when the adjusting plate is far away from the positioning plate, the adjusting assembly drives the adjusting plate to rotate relative to the positioning plate along the circumferential direction of the light holes until any one diaphragm hole is aligned with the light holes.
Preferably, the adjusting device further comprises a plurality of limiting assemblies which are arranged between the positioning plate and the adjusting plate and used for limiting the adjusting plate to rotate relative to the positioning plate when any diaphragm hole is aligned with the light transmission hole.
Preferably, the spacing subassembly includes:
the first limiting hole penetrates through the positioning plate in the thickness direction;
a plurality of second limiting holes which penetrate along the thickness direction of the adjusting plate and are used for limiting all the diaphragm holes to be aligned with the light-transmitting holes one by one;
the limiting pin penetrates through the first limiting hole and any second limiting hole.
Preferably, the adjustment assembly comprises:
the push rod penetrates through the positioning plate and the adjusting plate, and the first end of the push rod is fixedly connected with the adjusting plate;
and the shifting fork is fixedly connected with a connecting pin arranged at the second end of the push rod and is used for driving the push rod to slide relative to the positioning plate along the axial direction of the light hole or driving the push rod to rotate relative to the positioning plate along the circumferential direction of the light hole.
Preferably, the shifting fork is a U-shaped shifting fork clamped at the second end of the push rod, the connecting pin radially penetrates through the push rod along the push rod, and the U-shaped shifting fork is fixedly connected with the connecting pin.
Preferably, the adjustment assembly further comprises:
and the guide sleeve is fixedly arranged on the positioning plate, sleeved on the periphery of the push rod and used for guiding the push rod to slide.
Preferably, the adjustment assembly further comprises:
the restoring elastic part is sleeved on the push rod, two ends of the restoring elastic part respectively abut against the push rod and the guide sleeve and is used for assisting the push rod to slide and restore.
Preferably, the adjustment assembly further comprises:
the rotating bent plate is rotatably sleeved at one end of the guide sleeve, which is far away from the positioning plate, and is abutted against the end part of the guide sleeve, and the rotating bent plate is provided with a spherical guide groove;
and the driving rod penetrates through the rotating bent plate, is fixedly connected with the shifting fork and is used for driving the shifting fork to act, and the driving rod is provided with a spherical guide block matched with the spherical guide groove.
Preferably, one end of the driving rod far away from the shifting fork is provided with a control handle for manually shifting the shifting fork.
Preferably, the device further comprises a sliding driving cylinder and a rotating driving cylinder, wherein the sliding driving cylinder and the rotating driving cylinder are fixedly connected with one end, far away from the shifting fork, of the driving rod, the sliding driving cylinder is used for driving the pushing rod to slide relative to the positioning plate through the driving rod, and the rotating driving cylinder is used for driving the pushing rod to rotate relative to the positioning plate through the driving rod.
Compared with the prior art, the diaphragm provided by the invention comprises the positioning plate, the adjusting plate and the adjusting assembly. Pushing the adjusting assembly, wherein the adjusting assembly drives the adjusting plate to slide relative to the positioning plate along the axial direction of the light-transmitting hole, and the adjusting plate is far away from the positioning plate; then, rotating the adjusting assembly, wherein the adjusting assembly drives the adjusting plate to rotate relative to the positioning plate along the circumferential direction of the light holes, so that any one of the diaphragm holes is aligned with the light holes; finally, the adjusting assembly is shifted again, the adjusting assembly drives the adjusting plate to slide relative to the positioning plate along the axial direction of the light transmission hole again, and the adjusting plate is tightly attached to the positioning plate, so that the diaphragm holes with different apertures are alternatively aligned to the light transmission hole, and the aperture of the diaphragm hole is adjusted.
According to the diaphragm hole adjusting method, the aperture of the diaphragm hole is adjusted mainly by means of the formed diaphragm holes without depending on a plurality of diaphragm sheets, the phenomenon that the aperture is not adjusted smoothly due to clamping stagnation of the diaphragm sheets is avoided, the failure rate is reduced, smooth adjustment of the aperture of the diaphragm hole is facilitated, and the working reliability is high; furthermore, the adjusting plate rotates when being far away from the positioning plate, so that the adjusting plate and the positioning plate are prevented from being seriously abraded due to contact rotation, and the service lives of the adjusting plate and the positioning plate are prolonged.
Therefore, the diaphragm provided by the invention has higher service life and working reliability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a block diagram of an aperture provided in an embodiment of the present invention;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
FIG. 3 is a rear partial cross-sectional view of FIG. 1;
FIG. 4 is a front view of the adjustment plate of FIG. 1;
FIG. 5 is a sectional view taken along line D-D of FIG. 4;
FIG. 6 is a sectional view taken along line E-E in FIG. 4;
FIG. 7 is a front cross-sectional view of the positioning plate of FIG. 1;
FIG. 8 is a side cross-sectional view of the positioning plate of FIG. 1;
the arrow in fig. 2 indicates the dial direction of the drive lever and the arrow in fig. 3 indicates the rotation direction of the drive lever.
The reference numbers are as follows:
the device comprises a positioning plate 1, an adjusting plate 2, an adjusting assembly 3 and a limiting assembly 4;
a light-transmitting hole 11;
a diaphragm aperture 21;
a push rod 31, a connecting pin 32, a shifting fork 33, a guide sleeve 34, a return elastic piece 35, a rotating bent plate 36, a driving rod 37 and a control handle 38;
a first limit hole 41, a second limit hole 42 and a limit pin 43.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific examples.
Referring to fig. 1 to 8, fig. 1 is a structural diagram of a diaphragm according to an embodiment of the present invention; FIG. 2 is a sectional view taken along line A-A of FIG. 1; FIG. 3 is a rear partial cross-sectional view of FIG. 1; FIG. 4 is a front view of the adjustment plate of FIG. 1; FIG. 5 is a sectional view taken along line D-D of FIG. 4; FIG. 6 is a sectional view taken along line E-E in FIG. 4; FIG. 7 is a front cross-sectional view of the positioning plate of FIG. 1; FIG. 8 is a side cross-sectional view of the retaining plate of FIG. 1.
The embodiment of the invention discloses a diaphragm, which has the key improvement point that the structure of the diaphragm is optimized to change the aperture adjusting mode of a diaphragm hole 21, so that the service life and the working reliability of the diaphragm are improved.
The invention comprises a positioning plate 1, an adjusting plate 2 and an adjusting assembly 3. Wherein, the locating plate 1 has light trap 11, and light trap 11 runs through along the thickness direction of locating plate 1. In this embodiment, the thickness of the positioning plate 1 is preferably 23mm, and the length is preferably 144 mm. The positioning plate 1 comprises a positioning part with a light transmission hole 11 and a connecting part connected with the adjusting component 3, wherein the width of the positioning part is preferably 38mm, and the length of the positioning part is preferably 51 mm; the width of the connection portion is preferably 80 mm. The light hole 11 is a cylindrical through hole, the central axis of the light hole 11 coincides with the central axis of the positioning part, and the inner diameter of the light hole 11 is preferably 70 mm. Of course, the structure and size of the positioning plate 1 are not limited thereto.
The adjusting plate 2 is parallel to the positioning plate 1, namely the adjusting plate and the positioning plate are overlapped. The adjusting plate 2 has several diaphragm holes 21 of different aperture diameters. In this particular embodiment, the adjusting plate 2 comprises an adjusting portion having a diaphragm aperture 21 and a fastening portion connected to the adjusting assembly 3, the adjusting portion preferably having a width of 80mm, a length of 90mm and a thickness of 4 mm; the width of the fastening portion is preferably 38mm, the length is preferably 45mm, and the thickness is preferably 10 mm. Specifically, the adjusting plate 2 is provided with two diaphragm holes 21, each of the two diaphragm holes 21 is a stepped hole and includes a tapered hole near one side of the positioning plate 1 and a cylindrical hole connected to the tapered hole, the maximum inner diameters of the two diaphragm holes 21 are preferably 28mm and 14mm, respectively, and the tapers of the tapered holes are preferably 60 °. Of course, the structure and size of the adjustment plate 2 are not limited thereto.
The adjusting component 3 sequentially penetrates through the positioning plate 1 and the adjusting plate 2, when the aperture of the diaphragm hole 21 is adjusted, the adjusting component 3 is firstly pushed, the adjusting component 3 drives the adjusting plate 2 to slide relative to the positioning plate 1 along the axial direction of the light-transmitting hole 11, and the adjusting plate 2 is far away from the positioning plate 1; then, the adjusting assembly 3 is rotated, and the adjusting assembly 3 drives the adjusting plate 2 to rotate relative to the positioning plate 1 along the circumferential direction of the light-transmitting hole 11, so that any one of the diaphragm holes 21 is aligned with the light-transmitting hole 11; finally, the adjusting assembly 3 is shifted reversely, the adjusting assembly 3 drives the adjusting plate 2 to slide relative to the positioning plate 1 along the axial direction of the light transmitting hole 11 again, and the adjusting plate 2 is tightly attached to the positioning plate 1, so that the diaphragm holes 21 with different apertures are alternatively aligned to the light transmitting hole 11, and the aperture of the diaphragm holes 21 is adjusted.
It should be noted that, in this embodiment, the alignment of any one of the diaphragm holes 21 with the light-transmitting hole 11 means that the central axis of any one of the diaphragm holes 21 coincides with the central axis of the light-transmitting hole 11.
Therefore, the aperture of the diaphragm hole 21 is adjusted mainly by the formed diaphragm holes 21 without depending on a plurality of diaphragm sheets, the phenomenon that the aperture is not adjusted smoothly due to clamping stagnation of the diaphragm sheets is avoided, the failure rate is reduced, the aperture of the diaphragm hole 21 is adjusted smoothly, and the working reliability is high; further, adjusting plate 2 just rotates when keeping away from locating plate 1, avoids adjusting plate 2 and locating plate 1 to rotate because of the contact and seriously wear, is favorable to prolonging adjusting plate 2 and locating plate 1's life. Therefore, the diaphragm provided by the invention has higher service life and working reliability.
In order to further improve the reliability, the invention also comprises a plurality of limiting assemblies 4 which are arranged between the positioning plate 1 and the adjusting plate 2, when any one of the diaphragm holes 21 is aligned with the light transmission hole 11, the limiting assemblies 4 limit the adjusting plate 2 to rotate relative to the positioning plate 1, so that the diaphragm holes 21 are ensured to be reliably aligned with the light transmission hole 11, and the working reliability is higher.
In this particular embodiment, the spacing assembly 4 includes a first spacing hole 41, a second spacing hole 42, and a spacing pin 43. Wherein, locating plate 1 is located to first spacing hole 41, runs through along locating plate 1 thickness direction. In this embodiment, the first limit hole 41 includes a limit groove into which the limit pin 43 is inserted and a stop groove that is continuous with the limit groove and is used for stopping the limit pin 43. Specifically, the limiting groove is cylindrical, the inner diameter is preferably 10mm, and the length is preferably 18 mm; the stop groove is also cylindrical, preferably with an inner diameter of 5.5 mm. To ensure accuracy, the central axis of the first position-limiting hole 41 is located on the central symmetry plane of the positioning plate 1.
The second limiting holes 42 include a plurality of through holes penetrating in the thickness direction of the adjusting plate 2, and each second limiting hole 42 is used for limiting one diaphragm hole 21 to align with the light transmission hole 11, so that all diaphragm holes 21 are limited to align with the light transmission holes 11 one by one. In this embodiment, the adjusting plate 2 is provided with two second limiting holes 42, and the diameter of the second limiting hole 42 is set according to the outer diameter of the limiting pin 43.
The limiting pin 43 passes through the first limiting hole 41 and any one of the second limiting holes 42 to ensure that each diaphragm hole 21 is accurately aligned with the light transmission hole 11. In this embodiment, the outer circumference of the stopper pin 43 is cylindrical, and the outer diameter is preferably 10 mm. Of course, the structure and size of the stopper pin 43 are not limited thereto.
Of course, the structure of the position-limiting assembly 4 is not limited to this, and the use of other similar position-limiting assemblies 4 does not affect the achievement of the object of the present invention.
Optionally, in this particular embodiment, the adjustment assembly 3 comprises a pusher rod 31 and a fork 33. Wherein, the pushing rod 31 extends along the axial direction of the light hole 11 and sequentially passes through the adjusting plate 2 and the positioning plate 1. The push rod 31 can slide relative to the positioning plate 1, and a first end of the push rod 31 is fixedly connected with the adjusting plate 2. Specifically, the push rod 31 is keyed to the adjusting plate 2 to limit circumferential rotation of the push rod 31 relative to the adjusting plate 2; further, the first end of the pushing rod 31 is provided with an abutting baffle abutting against the adjusting plate 2, and the abutting baffle is detachably fixed at the first end of the pushing rod 31 through a fastening screw, so that the pushing rod 31 is fixedly connected with the adjusting plate 2 into a whole. Of course, the manner of attachment between the push rod 31 and the adjustment plate 2 is not limited thereto.
The second end of the pushing rod 31 is provided with a connecting pin 32, and the shifting fork 33 is fixedly connected with the connecting pin 32, so that the shifting fork 33 drives the pushing rod 31 to slide relative to the positioning plate 1 along the axial direction of the light-transmitting hole 11, or the shifting fork 33 drives the pushing rod 31 to rotate relative to the positioning plate 1 along the circumferential direction of the light-transmitting hole 11. In this embodiment, the fork 33 is a U-shaped fork clamped at the second end of the pushing rod 31, and accordingly, the second end of the pushing rod 31 is disposed in a clamping groove abutting against the U-shaped fork. The connecting pin 32 penetrates through the push rod 31 along the radial direction of the push rod 31, the connecting pin 32 can rotate relative to the push rod 31, the connecting pin 32 is fixedly connected with the U-shaped shifting fork, specifically, the end of the connecting pin 32 is fixedly connected with the mounting hole on the side surface of the U-shaped shifting fork through interference connection, but the fixing mode of the shifting fork 33 is not limited to this.
From the above, the shift fork 33 can slide the adjusting plate 2 relative to the positioning plate 1 by driving the pushing rod 31 to slide, and can also rotate the shift fork 33 to drive the adjusting plate 2 to rotate relative to the positioning plate 1 by the pushing rod 31.
Furthermore, the adjusting assembly 3 further includes a guiding sleeve 34, the guiding sleeve 34 is fixedly disposed on the positioning plate 1 and sleeved on the periphery of the pushing rod 31, so that the guiding sleeve 34 guides the pushing rod 31 to drive the adjusting plate 2 to slide relative to the positioning plate 1. In this embodiment, the positioning plate 1 is disposed in a fixing hole of the guide sleeve 34, and the fixing hole and the guide sleeve 34 may be connected by a screw thread or an interference fit, which is not limited in this embodiment. The guide sleeve 34 has a guide hole in the center through which the push rod 31 passes, the guide hole having a cylindrical shape, but the structure of the guide sleeve 34 is not limited thereto.
Furthermore, the adjusting assembly 3 further includes a return elastic member 35 sleeved on the pushing rod 31 and having two ends respectively abutting against the pushing rod 31 and the guide sleeve 34, so that the return elastic member 35 assists the sliding return of the pushing rod 31. In this embodiment, the elastic return element 35 is preferably a common cylindrical spring, and accordingly, the push rod 31 is provided at its outer periphery with an annular mounting groove for mounting the elastic return element 35, and an annular stop plate abutting against the elastic return element 35 is fixedly provided at the end of the guide sleeve 34. When the fork 33 is pushed, the fork 33 pushes the push rod 31, the push rod 31 slides relative to the guide sleeve 34, and the return elastic member 35 is compressed; when the shifting fork 33 is loosened, the reset elastic piece 35 drives the push rod 31 to reversely slide relative to the guide sleeve 34 by means of elastic force, so that the push rod 31 is automatically reset, and the improvement of operation convenience and working reliability are facilitated.
Still further, the adjustment assembly 3 further comprises a rotating bending plate 36 and a driving rod 37. The rotating bent plate 36 is rotatably sleeved on one end of the guide sleeve 34 far away from the positioning plate 1 and abuts against the end of the guide sleeve 34. In this embodiment, the rotating bending plate 36 comprises a rotating sleeve sleeved on the guiding sleeve 34 and a guiding plate vertically connected to an end of the rotating sleeve away from the positioning plate 1, wherein the rotating sleeve is rotatably connected to the guiding sleeve 34, an end of the guiding sleeve 34 is fixedly disposed on an axial end retaining ring abutting against a first end of the rotating sleeve, and a second end of the rotating sleeve abuts against the positioning plate 1, so as to limit the axial movement of the rotating sleeve abutting against the guiding sleeve 34. The swivel elbow 36 is provided with a ball-type guide groove, and in particular, a ball-type guide groove is provided on the guide plate. Of course, the structure of the roll bending plate 36 is not limited thereto.
The driving rod 37 passes through the turning plate 36 and is fixedly connected with the shift fork 33, so that the driving rod 37 drives the shift fork 33 to move. In this embodiment, the driving rod 37 passes through the guiding plate of the rotating bending plate 36, and the driving rod 37 is provided with a ball-type guiding slot, so that the driving rod 37 and the rotating bending plate 36 form a ball-type hinge, and the driving rod 37 can rotate relative to the rotating bending plate 36. The driving rod 37 and the shift fork 33 are preferably screwed to facilitate attachment and detachment, but may be welded to each other, and is not limited thereto.
Preferably, the driving rod 37 can be manually driven, and accordingly, an end of the driving rod 37 far from the shift fork 33 is provided with a manipulating handle 38, so that the action of the driving rod 37 is manually adjusted by the manipulating handle 38. In this particular embodiment, the operating handle is preferably of a ball type.
Of course, the driving rod 37 may also adopt other driving manners, and accordingly, the present invention includes a sliding driving cylinder and a rotating driving cylinder fixedly connected to an end of the driving rod 37 far from the fork 33, the sliding driving cylinder is used for driving the pushing rod 31 to slide relative to the positioning plate 1 through the driving rod 37, and the rotating driving cylinder is used for driving the pushing rod 31 to rotate relative to the positioning plate 1 through the driving rod 37, wherein the sliding driving cylinder and the rotating driving cylinder may be air cylinders or hydraulic cylinders, which provides conditions for automatically adjusting the driving rod 37.
The working principle of the diaphragm provided by the invention is as follows:
the diaphragm is assumed to be driven manually;
firstly, the limit pin 43 is taken out;
then, the operating handle 38 is turned in the direction indicated by the arrow in fig. 2, the driving rod 37 pushes the shifting fork 33, the shifting fork 33 drives the pushing rod 31 to move left relative to the guiding sleeve 34, the elastic restoring member 35 is deformed under pressure, the pushing rod 31 drives the adjusting plate 2 to move left relative to the positioning plate 1, and the adjusting plate 2 is far away from the positioning plate 1;
then, the operating handle is rotated in the direction indicated by the arrow in fig. 3, the driving rod 37 drives the pushing rod 31 to rotate clockwise relative to the guiding sleeve 34 through the shifting fork 33, the pushing rod 31 drives the adjusting plate 2 to rotate clockwise relative to the positioning plate 1, and one of the diaphragm holes 21 is aligned with the light-transmitting hole 11;
finally, the operating handle 38 is poked reversely along the direction indicated by the arrow in fig. 2, the driving rod 37 pushes the shifting fork 33, the shifting fork 33 drives the pushing rod 31 to move rightwards relative to the guide sleeve 34, the reset elastic piece 35 recovers, the pushing rod 31 drives the adjusting plate 2 to move rightwards relative to the positioning plate 1, the adjusting plate 2 is tightly attached to the positioning plate 1, and the limit pin 43 is inserted into the first limit hole 41 and the second limit hole 42;
this completes the aperture adjustment of one diaphragm aperture 21, and the adjustment of all diaphragm apertures 21 can be achieved in this cycle.
The diaphragm provided by the present invention is described in detail above, and the principle and the implementation of the present invention are explained herein by applying specific examples, and the description of the above examples is only used to help understanding the method of the present invention and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. An optical diaphragm, comprising:
a positioning plate (1) having a light-transmitting hole (11);
the adjusting plate (2) is parallel to the positioning plate (1) and is provided with a plurality of diaphragm holes (21) with different apertures;
the adjusting component (3) sequentially penetrates through the positioning plate (1) and the adjusting plate (2) and is used for driving the adjusting plate (2) to slide along the axial direction of the light-transmitting hole (11) so as to be close to or far away from the positioning plate (1); when adjusting plate (2) keep away from when locating plate (1), adjusting part (3) drive adjusting plate (2) are followed the circumference of light trap (11) is for locating plate (1) rotates until arbitrary diaphragm hole (21) aims at light trap (11).
2. An aperture according to claim 1, characterised by further comprising a plurality of sets of limiting members (4) disposed between the positioning plate (1) and the adjusting plate (2) for limiting the rotation of the adjusting plate (2) relative to the positioning plate (1) when any one of the aperture holes (21) is aligned with the light-transmitting hole (11).
3. An aperture according to claim 2, characterized in that the stop assembly (4) comprises:
a first limiting hole (41) penetrating along the thickness direction of the positioning plate (1);
a plurality of second limiting holes (42) which penetrate along the thickness direction of the adjusting plate (2) and are used for limiting all the diaphragm holes (21) to be aligned with the light transmission holes (11) one by one;
and a limit pin (43) which penetrates through the first limit hole (41) and any one of the second limit holes (42).
4. A diaphragm according to any one of claims 1 to 3, characterised in that the adjustment assembly (3) comprises:
a push rod (31) which penetrates through the positioning plate (1) and the adjusting plate (2) and is fixedly connected with the adjusting plate (2) at a first end;
and the shifting fork (33) is fixedly connected with a connecting pin (32) arranged at the second end of the push rod (31) and used for driving the push rod (31) to slide relative to the positioning plate (1) along the axial direction of the light-transmitting hole (11) or driving the push rod (31) to rotate relative to the positioning plate (1) along the circumferential direction of the light-transmitting hole (11).
5. The diaphragm according to claim 4, characterized in that the fork (33) is a U-shaped fork clamped to the second end of the push rod (31), the connecting pin (32) radially penetrates the push rod (31) along the push rod (31), and the U-shaped fork is fixedly connected to the connecting pin (32).
6. An aperture according to claim 4, characterized in that the adjustment assembly (3) further comprises:
and the guide sleeve (34) is fixedly arranged on the positioning plate (1), sleeved on the periphery of the push rod (31) and used for guiding the push rod (31) to slide.
7. An aperture according to claim 6, characterized in that the adjustment assembly (3) further comprises:
and the restoring elastic piece (35) is sleeved on the push rod (31), two ends of the restoring elastic piece are respectively propped against the push rod (31) and the guide sleeve (34), and the restoring elastic piece is used for assisting the sliding restoration of the push rod (31).
8. An aperture according to claim 6, characterized in that the adjustment assembly (3) further comprises:
the rotating bending plate (36) is rotatably sleeved at one end, far away from the positioning plate (1), of the guide sleeve (34) and is abutted against the end part of the guide sleeve (34), and a spherical guide groove is formed in the rotating bending plate (36);
pass the turning plate (36) and with shift fork (33) link firmly mutually, be used for the drive actuating lever (37) of shift fork (33) action, actuating lever (37) have with ball-type guide slot matched with ball-type guide block.
9. A diaphragm according to claim 8, characterized in that the end of the drive rod (37) remote from the shift fork (33) is provided with a manipulating handle (38) for manually shifting the shift fork (33).
10. An aperture according to claim 8, characterized in that it further comprises a sliding driving cylinder and a rotating driving cylinder, which are fixedly connected to the end of the driving rod (37) far away from the shifting fork (33), the sliding driving cylinder is used for driving the pushing rod (31) to slide relative to the positioning plate (1) through the driving rod (37), and the rotating driving cylinder is used for driving the pushing rod (31) to rotate relative to the positioning plate (1) through the driving rod (37).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910726778.3A CN110737087B (en) | 2019-08-07 | 2019-08-07 | Diaphragm |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910726778.3A CN110737087B (en) | 2019-08-07 | 2019-08-07 | Diaphragm |
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| CN110737087A CN110737087A (en) | 2020-01-31 |
| CN110737087B true CN110737087B (en) | 2021-05-04 |
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| WO2018197556A1 (en) * | 2017-04-26 | 2018-11-01 | Carl Zeiss Microscopy Gmbh | Method and device for regulating intensities and/or spectral components of radiation irradiated into an aperture diaphragm |
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- 2019-08-07 CN CN201910726778.3A patent/CN110737087B/en not_active Expired - Fee Related
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| CN101592847A (en) * | 2008-05-30 | 2009-12-02 | 索尼株式会社 | Light amount control apparatus, lens barrel and picture pick-up device |
| CN104662473A (en) * | 2012-03-07 | 2015-05-27 | 新加坡国立大学 | A MEMS iris diaphragm for an optical system and method for adjusting a size of an aperture thereof |
| CN202984914U (en) * | 2012-12-17 | 2013-06-12 | 广州安特激光技术有限公司 | Multi-aperture diaphragm adjusting rack for disc cutting machine |
| WO2018197556A1 (en) * | 2017-04-26 | 2018-11-01 | Carl Zeiss Microscopy Gmbh | Method and device for regulating intensities and/or spectral components of radiation irradiated into an aperture diaphragm |
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| CN110737087A (en) | 2020-01-31 |
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