CN220603759U - Zoom lens iris system - Google Patents
Zoom lens iris system Download PDFInfo
- Publication number
- CN220603759U CN220603759U CN202322213584.8U CN202322213584U CN220603759U CN 220603759 U CN220603759 U CN 220603759U CN 202322213584 U CN202322213584 U CN 202322213584U CN 220603759 U CN220603759 U CN 220603759U
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- base
- straight groove
- cylinder
- zoom lens
- openings
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- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 3
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 3
- 241001330002 Bambuseae Species 0.000 claims description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 3
- 239000011425 bamboo Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model discloses a zoom lens iris system, which comprises a curve cylinder, a straight groove cylinder and a base, wherein the cross section of the base is U-shaped, the curve cylinder is wrapped on the outer surface of the straight groove cylinder, the base is positioned at the bottom of the curve cylinder, and the base is positioned at the bottom of the straight groove cylinder; the cam is arranged in the straight groove barrel, the height of the cam is half of that of the straight groove barrel, and the top of the cam is clamped at the top edge of the straight groove barrel; the first deflector rod is arranged in the base and is clamped on the side edge of the cam through a spring; according to the utility model, after the first deflector rod is pulled by the spring, the first deflector rod is guided by the cam to move up and down in cooperation with the zoom group slide ring to perform controllable rotation, so that the f-number of Duan Shiguang circles in different focuses is constant.
Description
Technical Field
The utility model relates to the technical field of zoom lenses, in particular to an iris system of a zoom lens.
Background
The zoom lens is a camera lens capable of changing focal length within a certain range, thereby obtaining images with different sizes and different scenery ranges with different wide and narrow angles of view. The zoom lens can change the photographing range by varying the focal length without changing the photographing distance, and thus is very advantageous for picture composition. Because a zoom lens can play the role of a plurality of fixed focus lenses, the quantity of photographic equipment carried is reduced and the time for changing the lenses is saved when the user travels.
The aperture of the diaphragm of the common fixed focus lens is constant, and the aperture of the diaphragm needs to be changed together in the zooming process of the zoom lens to ensure the constant f-number of the diaphragm.
The existing lens using an electronic diaphragm does not have the problem, but the zoom film lens is mostly of a mechanical structure, and the change must be realized through the mechanical structure.
Disclosure of Invention
In order to solve the technical problems, the utility model provides the following technical scheme: the zoom lens iris system comprises a curve cylinder, a straight groove cylinder and a base, wherein the cross section of the base is U-shaped, the curve cylinder is wrapped on the outer surface of the straight groove cylinder, the base is positioned at the bottom of the curve cylinder, and the base is positioned at the bottom of the straight groove cylinder; the straight groove barrel is internally provided with a cam, the height of the cam is half of that of the straight groove barrel, and the top of the cam is clamped at the top edge of the straight groove barrel; the base internally mounted has first driving lever, first driving lever passes through the spring card and establishes the side of cam.
Preferably, the base comprises a diaphragm stator and a diaphragm rotor inside, the diaphragm stator is located below the first deflector rod, and the diaphragm rotor is located below the diaphragm stator.
Preferably, the base comprises a sliding rod, the outer diameter of the sliding rod is smaller than the inner diameter of the base, and the sliding rod is located below the diaphragm moving plate.
Preferably, the base comprises a zoom group slide ring, the outer diameter of the zoom group slide ring is smaller than the inner diameter of the base, the inner diameter of the zoom group slide ring is consistent with the outer diameter of the slide rod, and the zoom group slide ring is wrapped on the outer side of the slide rod.
Preferably, the base comprises a moving plate driving lever, the top of the moving plate driving lever is connected with the diaphragm moving plate, and the bottom of the moving plate driving lever is clamped at the edge of the bottom of the base.
Preferably, the device further comprises a focusing hand wheel, wherein the focusing hand wheel is connected with the spring, the focusing hand wheel is clamped on the outer surface of the curve cylinder, and the bottom edge of the teaching hand wheel is located above the top end of the base.
Preferably, the surface of the curved cylinder is provided with a plurality of first openings, the first openings are arc-shaped openings, and the first openings penetrate through the side surface of the curved cylinder.
Preferably, the surface of the straight groove cylinder is provided with a plurality of second openings, the second openings are strip-shaped openings, and the second openings penetrate through the side face of the straight groove cylinder.
Compared with the prior art, the utility model has the following beneficial effects:
the structure ensures that the f-number of the aperture is constant when shooting video through a mechanical structure.
Drawings
Fig. 1 is a perspective view of an embodiment of the present utility model.
Fig. 2 is a top view of an embodiment of the present utility model.
Fig. 3 is a front view of an embodiment of the present utility model.
Fig. 4 is a schematic view of a straight slot barrel according to an embodiment of the present utility model.
Fig. 5 is a schematic view of a structure of a movable plate lever according to an embodiment of the present utility model.
Fig. 6 is a schematic view of a zoom group slide ring according to an embodiment of the present utility model.
In the figure, a curved cylinder 1, a straight groove cylinder 2, a base 3, a focusing hand wheel 4, a diaphragm stator 5, a diaphragm rotor 6, a zoom group slide ring 7, a cam 8, a first deflector rod 9, a slide rod 10, a rotor deflector rod 11, a first opening 12 and a second opening 13.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
1-6, a zoom lens iris system comprises a curve cylinder 1, a straight groove cylinder 2 and a base 3, wherein the cross section of the base 3 is U-shaped, the curve cylinder 1 is wrapped on the outer surface of the straight groove cylinder 2, the base 3 is positioned at the bottom of the curve cylinder 1, and the base 3 is positioned at the bottom of the straight groove cylinder 2; the cam 8 is arranged in the straight groove barrel 2, the height of the cam 8 is half of that of the straight groove barrel 2, and the top of the cam 8 is clamped at the top edge of the straight groove barrel 2; the first deflector rod 9 is arranged in the base 3, and the first deflector rod 9 is clamped on the side edge of the cam 8 through a spring; the base plays the effect of protection inner structure, and curve section of thick bamboo and straight flute section of thick bamboo play rotatory and the effect of the stable work of protection inner structure, guarantee that the device does not receive external interference in the course of the work, improve device work efficiency.
As shown in fig. 3-6, the base 3 internally comprises a diaphragm stator 5 and a diaphragm rotor 6, the diaphragm stator 5 is positioned below the first deflector rod 9, and the diaphragm rotor 6 is positioned below the diaphragm stator 5; the diaphragm stator plays a role of fixing a basic diaphragm, and ensures the basic operation of the device.
As shown in fig. 3-6, the base 3 comprises a sliding rod 10, the outer diameter of the sliding rod 10 is smaller than the inner diameter of the base 3, and the sliding rod 10 is positioned below the diaphragm moving plate 6; the sliding rod plays a role in fixedly supporting the internal structure of the device while ensuring the sliding ring of the zoom group to slide up and down, so that the stability of the device is improved, and the service life of the device is prolonged.
As shown in fig. 3-6, the base 3 comprises a zoom group slide ring 7, the outer diameter of the zoom group slide ring 7 is smaller than the inner diameter of the base 3, the inner diameter size of the zoom group slide ring 7 is consistent with the outer diameter size of the slide rod 10, and the zoom group slide ring 7 is wrapped outside the slide rod 10; the stability of the device in the working process is ensured by the mutually matched sizes, and the stability of the device can be ensured when the device is extruded by external force.
As shown in fig. 3-6, the base 3 comprises a moving plate driving lever 11, the top of the moving plate driving lever 11 is connected with the diaphragm moving plate 6, and the bottom of the moving plate driving lever 11 is clamped at the bottom edge of the base 3; when the focusing hand wheel is rotated, the focusing slide ring drives the cam to move up and down to achieve constant f values at different focal sections, the required value is achieved, and the accuracy of the device is ensured.
1-3, the device also comprises a focusing hand wheel 4, wherein the focusing hand wheel 4 is connected with a spring, the focusing hand wheel 4 is clamped on the outer surface of the curve cylinder 1, and the bottom edge of the teaching hand wheel is positioned above the top end of the base 3; the focusing hand wheel is convenient for a user to improve the speed of adjusting precision and improve the working efficiency of the device under the condition of not disassembling the device.
As shown in fig. 1-6, the surface of the curved cylinder 1 is provided with a plurality of first openings 12, the first openings 12 are arc-shaped openings, and the first openings 12 penetrate through the side surface of the curved cylinder 1; various mirrors of the curve cylinder fixed mirror group avoid transitional exposure to realize optical zoom adjustment of light quantity, and ensure stable operation of the device.
As shown in fig. 4-6, the surface of the straight groove drum 2 is provided with a plurality of second openings 13, the second openings 13 are strip-shaped openings, and the second openings 13 penetrate through the side surface of the straight groove drum 2; the straight groove cylinder is matched with the curve cylinder, so that various mirrors of the fixed mirror group can avoid transitional exposure to realize the effect of adjusting the light flux by optical zooming, and the stable operation of the device is ensured.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A zoom lens iris system, characterized in that: the novel straight groove type solar cell comprises a curve cylinder (1), a straight groove cylinder (2) and a base (3), wherein the cross section of the base (3) is U-shaped, the curve cylinder (1) is wrapped on the outer surface of the straight groove cylinder (2), the base (3) is positioned at the bottom of the curve cylinder (1), and the base (3) is positioned at the bottom of the straight groove cylinder (2); the straight groove barrel (2) is internally provided with a cam (8), the height of the cam (8) is half of that of the straight groove barrel (2), and the top of the cam (8) is clamped at the top edge of the straight groove barrel (2); the base (3) internally provided with a first deflector rod (9), and the first deflector rod (9) is clamped on the side edge of the cam (8) through a spring.
2. The zoom lens iris system of claim 1, wherein: the base (3) is internally provided with a diaphragm stator (5) and a diaphragm rotor (6), the diaphragm stator (5) is positioned below the first deflector rod (9), and the diaphragm rotor (6) is positioned below the diaphragm stator (5).
3. The zoom lens iris system according to claim 2, wherein: the base (3) comprises a sliding rod (10), the outer diameter of the sliding rod (10) is smaller than the inner diameter of the base (3), and the sliding rod (10) is located below the diaphragm moving plate (6).
4. A zoom lens iris system according to claim 3, wherein: the base (3) comprises a zoom group slide ring (7), the outer diameter of the zoom group slide ring (7) is smaller than the inner diameter of the base (3), the inner diameter size of the zoom group slide ring (7) is consistent with the outer diameter size of the slide rod (10), and the zoom group slide ring (7) is wrapped on the outer side of the slide rod (10).
5. The zoom lens iris system of claim 4, wherein: the base (3) comprises a moving plate deflector rod (11), the top of the moving plate deflector rod (11) is connected with the diaphragm moving plate (6), and the bottom of the moving plate deflector rod (11) is clamped at the bottom edge of the base (3).
6. The zoom lens iris system of claim 5, wherein: still include focusing hand wheel (4), focusing hand wheel (4) are connected the spring, focusing hand wheel (4) card is established curve section of thick bamboo (1) surface, focusing hand wheel (4) base is located base (3) top.
7. The zoom lens iris system of claim 6, wherein: the surface of the curve cylinder (1) is provided with a plurality of first openings (12), the first openings (12) are arc-shaped openings, and the first openings (12) penetrate through the side face of the curve cylinder (1).
8. The zoom lens iris system of claim 7, wherein: the surface of the straight groove barrel (2) is provided with a plurality of second openings (13), the second openings (13) are strip-shaped openings, and the second openings (13) penetrate through the side face of the straight groove barrel (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322213584.8U CN220603759U (en) | 2023-08-17 | 2023-08-17 | Zoom lens iris system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322213584.8U CN220603759U (en) | 2023-08-17 | 2023-08-17 | Zoom lens iris system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220603759U true CN220603759U (en) | 2024-03-15 |
Family
ID=90166307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322213584.8U Active CN220603759U (en) | 2023-08-17 | 2023-08-17 | Zoom lens iris system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220603759U (en) |
-
2023
- 2023-08-17 CN CN202322213584.8U patent/CN220603759U/en active Active
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