CN112513731A

CN112513731A - Exposure unit, lens assembly, photographing apparatus, and method of assembling exposure unit

Info

Publication number: CN112513731A
Application number: CN202080004126.XA
Authority: CN
Inventors: 夏龙光; 张松; 徐永旺
Original assignee: SZ DJI Technology Co Ltd
Current assignee: SZ DJI Technology Co Ltd
Priority date: 2020-02-28
Filing date: 2020-02-28
Publication date: 2021-03-16
Anticipated expiration: 2040-02-28
Also published as: CN112513731B; WO2021168786A1

Abstract

An exposure unit (100), a lens assembly (1000), a photographing apparatus (2000), and a method of assembling the exposure unit (100). The exposure unit (100) comprises a base (10), a plurality of aperture blades (20), a light shielding member (30) and a movable member (40) which are arranged in sequence. The base (10) comprises a first through hole (103) penetrating through the first side (101) and the second side (102) which are opposite. The movable member (40) can rotate around the optical axis (OO') and can drive the plurality of aperture blades (20) to rotate around the connecting member (105) to at least partially block or at least partially open the first through hole (103) when rotating.

Description

Exposure unit, lens assembly, photographing apparatus, and method of assembling exposure unit

Technical Field

The present disclosure relates to the field of optical imaging, and more particularly, to an exposure unit, a lens assembly, a photographing apparatus, and an assembling method of the exposure unit.

Background

In order to improve the detachability and maintainability of the lens, the aperture and the shutter in the lens are often made as two relatively independent modules, which are collectively called an exposure unit, for controlling the light input amount of the lens. In the optical axis direction, the exposure unit may sequentially include a shutter base, aperture blades, an aperture movable ring, and an aperture fixing ring, wherein guide rods on the aperture fixing ring fix the aperture blades on the shutter base after passing through the aperture blades. The exposure unit with the structural layout needs two elements, namely the diaphragm fixing ring and the shutter base, to mount the diaphragm blades, so that the size (thickness) of the exposure unit in the optical axis direction is larger, and the miniaturization of a lens is not facilitated.

Disclosure of Invention

Embodiments of the present application provide an exposure unit, a lens assembly, a photographing apparatus, and an assembly method of the exposure unit.

The exposure unit of this application embodiment includes base, a plurality of diaphragm blade, light-shielding member and the moving part that sets gradually. The base comprises a first side and a second side which are opposite to each other, a first through hole penetrating through the first side and the second side is formed in the base, and a preset space for movement of the shutter blade is formed in the second side. The plurality of diaphragm blades are arranged around the first through hole and are respectively arranged on the first side through a connecting piece on the base or a connecting piece on each diaphragm blade. The shading piece is fixed on the first side and provided with a second through hole. The moving part is arranged on the first side, the moving part is provided with a third through hole, and the first through hole, the second through hole and the third through hole respectively correspond to each other and are all used for the optical axis of the exposure unit to pass through. The movable piece can rotate around the optical axis and can drive the plurality of aperture blades to rotate around the connecting piece so as to at least partially block or at least partially open the first through hole when rotating.

The lens assembly of the embodiment of the application comprises a plurality of lens groups and an exposure unit, wherein the exposure unit is arranged between the lens groups in a plurality. The exposure unit comprises a base, a plurality of aperture blades, a light shielding piece and a moving piece which are arranged in sequence. The base comprises a first side and a second side which are opposite to each other, a first through hole penetrating through the first side and the second side is formed in the base, and a preset space for movement of the shutter blade is formed in the second side. The plurality of diaphragm blades are arranged around the first through hole and are respectively arranged on the first side through a connecting piece on the base or a connecting piece on each diaphragm blade. The shading piece is fixed on the first side and provided with a second through hole. The moving part is arranged on the first side, the moving part is provided with a third through hole, and the first through hole, the second through hole and the third through hole respectively correspond to each other and are all used for the optical axis of the exposure unit to pass through. The movable piece can rotate around the optical axis and can drive the plurality of aperture blades to rotate around the connecting piece so as to at least partially block or at least partially open the first through hole when rotating.

The shooting equipment of this application embodiment includes image sensor and lens subassembly, image sensor is used for will passing through the light signal conversion of lens subassembly is the electrical signal for formation of image. The lens assembly comprises a plurality of lens groups and an exposure unit, and the exposure unit is arranged among the lens groups. The exposure unit comprises a base, a plurality of aperture blades, a light shielding piece and a moving piece which are arranged in sequence. The base comprises a first side and a second side which are opposite to each other, a first through hole penetrating through the first side and the second side is formed in the base, and a preset space for movement of the shutter blade is formed in the second side. The plurality of diaphragm blades are arranged around the first through hole and are respectively arranged on the first side through a connecting piece on the base or a connecting piece on each diaphragm blade. The shading piece is fixed on the first side and provided with a second through hole. The moving part is arranged on the first side, the moving part is provided with a third through hole, and the first through hole, the second through hole and the third through hole respectively correspond to each other and are all used for the optical axis of the exposure unit to pass through. The movable piece can rotate around the optical axis and can drive the plurality of aperture blades to rotate around the connecting piece so as to at least partially block or at least partially open the first through hole when rotating.

The assembling method of the exposure unit of the embodiment of the application comprises the steps of arranging a plurality of diaphragm blades on a first side of a base around a first through hole through a connecting piece; fixing a light shielding piece on the first side, and enabling a second through hole of the light shielding piece to correspond to the first through hole of the base; and installing the moving part on the first side, and enabling the third through hole of the moving part to correspond to the second through hole.

In the exposure unit, the lens assembly, the shooting device and the assembling method of the exposure unit, the plurality of diaphragm blades can be installed on the base through the connecting piece, and an extra element is not needed to be added to be matched with the base to install the diaphragm blades, so that the size of the exposure unit in the optical axis direction is reduced, and the exposure unit, the lens assembly and the shooting device are favorably miniaturized. In addition, the diaphragm blade of this application embodiment is through connecting piece direct mount on the base, avoids installing the diaphragm blade in the narrow and small space that forms between extra component and base, has reduced the installation degree of difficulty of diaphragm blade, has improved the packaging efficiency of exposure unit, lens subassembly and shooting equipment.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments taken in conjunction with the accompanying drawings,

wherein:

FIG. 1 is an exploded schematic view of one direction of an exposure unit according to some embodiments of the present application.

FIG. 2 is an exploded view of another orientation of an exposure unit according to some embodiments of the present application.

FIG. 3 is a schematic view of the structure of aperture blades according to certain embodiments of the present application.

Fig. 4 is a schematic structural diagram of a lens assembly according to some embodiments of the present disclosure.

Fig. 5 is a schematic structural diagram of a photographing apparatus according to some embodiments of the present application.

Fig. 6 to 11 are schematic views illustrating an assembling method of an exposure unit according to some embodiments of the present disclosure.

Fig. 12 to 15 are schematic views illustrating a method of installing aperture blades according to some embodiments of the present application.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application, and should not be construed as limiting the present application.

Referring to fig. 1 and 2, an exposure unit 100 according to an embodiment of the present disclosure includes a base 10, a plurality of aperture blades 20, a light blocking member 30, and a movable member 40, which are sequentially disposed. The base 10 includes a first side 101 and a second side 102 opposite to each other, the base 10 has a first through hole 103 penetrating the first side 101 and the second side 102, and the second side 102 has a preset space 104 for moving the shutter blade 603. A plurality of diaphragm blades 20 are disposed around the first through hole 103 and are mounted on the first side 101 through a connector 105 on the base 10 or a connector on each diaphragm blade 20, respectively. The light shielding member 30 is fixed on the first side 101 and has a second through hole 301. The movable member 40 is disposed on the first side 101, the movable member 40 is provided with a third through hole 401, and the first through hole 103, the second through hole 301, and the third through hole 401 respectively correspond to and are all for the optical axis OO' of the exposure unit 100 to pass through. The movable member 40 is capable of rotating around the optical axis OO' and, when rotated, is capable of driving the plurality of aperture blades 20 to rotate around the connecting member 105 to at least partially block or at least partially open the first through hole 103.

The plurality of diaphragm blades 20 in the exposure unit 100 according to the embodiment of the present application can be mounted on the base 10 through the connecting member 105, and there is no need to add an additional element to cooperate with the base 10 to mount the diaphragm blades 20, so that the size of the exposure unit 100 in the optical axis OO' direction is reduced, which is beneficial to realizing miniaturization of the exposure unit 100. That is, compared with the prior art, the embodiment of the present application has the shutter base and the aperture fixing ring as an integral structure, and the mounting of the shutter blade 603 and the aperture blade 20 on the base 10 is realized by the structure of the base 10, which reduces the increase in size of the aperture fixing ring in the optical axis direction of the exposure unit 100.

In addition, the diaphragm blade 20 of the embodiment of the present application is directly mounted on the base 10 through the connecting member 105, so that the diaphragm blade 20 is not mounted in a narrow space formed between an additional element and the base 10, the mounting difficulty of the diaphragm blade 20 is reduced, and the assembly efficiency of the exposure unit 100 is improved. That is, due to the integration of the shutter base and the aperture fixing ring, the installation sequence of each element in the exposure unit 100 changes, and compared with the prior art in which the aperture blade 20 needs to be installed between the aperture fixing ring and the shutter base, the embodiment of the present application only needs to install the base 10, the aperture blade 20, the light shielding member 30, and the movable member 30 in sequence, and the installation space of the aperture blade 20 is not limited.

Referring to fig. 1 and fig. 2, in particular, in some embodiments, the base 10 may include a base body 11, the base body 11 includes a first surface 111 and a second surface 112, the first surface 111 of the base body 11 is located on the first side 101, the second surface 112 of the base body 11 is located on the second side 102, and the preset space 104 for the shutter blade 603 to move is formed by being recessed inward from the second surface 112 of the base body 11. The base 10 further includes a sidewall 12 extending from an edge of the first face 111 of the base body 11, and the sidewall 12 and the base body 11 together form a receiving space 13. The plurality of diaphragm blades 20, the light-blocking member 30, and the movable element 40 are disposed in the housing space 13. In the exposure unit 100 according to the embodiment of the present invention, the housing space 13 is formed on the first side 101 of the base 10, and the aperture blade 20, the light-shielding member 30 and the moving member 40 are disposed in the housing space 13, so that the base 10 can protect the aperture blade 20, the light-shielding member 30 and the moving member 40, and the corresponding pre-set space 104 for the shutter blade 603 to move can be opened on the second surface 112 of the base body 11, thereby making more sufficient use of the space on the base 10 and facilitating the miniaturization of the exposure unit 100.

In some embodiments, the base body 11 may be formed with a plurality of first guide holes 106, the first guide holes 106 are arc-shaped, the plurality of first guide holes 106 may penetrate through the first surface 111 and the second surface 112 of the base body 11, and the plurality of first guide holes 106 are disposed at intervals around the first through hole 103. The plurality of connecting members 105 may extend from the first surface 111 of the base body 11 and be located in the receiving space 13, the number of the plurality of connecting members 105 is the same as the number of the plurality of first guiding holes 106, and the plurality of connecting members 105 and the plurality of first guiding holes 106 are alternately arranged around the first through holes 103. The connecting member 105 may be a connecting shaft 107. Of course, the connector 105 may also have other shapes, for example, the connector 105 may be a connecting tube. The number of the connecting shafts 107 may be plural, for example, the plural connecting shafts 107 may be 2, 3, 4, 5, 6, 7, 8, 9, 10 or more.

The sidewall 12 of the base 10 defines a first notch 121 and a second notch 122. At least two connecting columns 108 are arranged on the first gap 121 and the second gap 122, wherein one connecting column 108 is located at the first gap 121, and the other connecting columns 108 are located at the second gap 122. For example, when the number of the connecting posts 108 is two, the two connecting posts 108 are respectively disposed at the first notch 121 and the second notch 122. For another example, when the number of the connecting posts 108 is three, one of the three connecting posts 108 is disposed at the first notch 121, and the remaining two connecting posts 108 are disposed at the second notch 122. The sidewall 12 of the base 10 is further opened with a third notch 123, wherein the third notch 123 is not communicated with the first notch 121 and the second notch 122. A plurality of spherical protrusions 1010 are provided on the inner surface of the sidewall 12 of the base 10, and specifically, the number of the spherical protrusions 1010 may be two or more, and the plurality of spherical protrusions 1010 may be uniformly distributed on the inner surface of the sidewall 12 of the base 10. Of course, the plurality of spherical protrusions 1010 may be randomly distributed on the inner surface of the sidewall 12. The top surface 124 of the side wall 12 is opened with a plurality of first threaded holes 1011, for example, the number of the plurality of first threaded holes 1011 can be two, three, four, etc., and the plurality of first threaded holes 1011 can be uniformly distributed on the top surface 124 of the side wall 12 and penetrate through the first side 101 and the second side 102 of the base 10. The periphery of the second surface 112 of the base 10 is further provided with a first mounting hole 109 and a second mounting hole 1012, wherein the first mounting hole 109 does not penetrate through the first side 101 of the base 10, the second mounting hole 1012 penetrates through the first side 101 and the second side 102 of the base 10, and the first mounting hole 109 and the second mounting hole 1012 are spaced and adjacent to each other.

With continued reference to fig. 1 and 2, in some embodiments, the number of the plurality of aperture blades 20 may be two or more, for example, the number of the aperture blades 20 may be 2, 3, 4, 5, 6, 7, 8, 9, 10 or more. Wherein, the more the number of the diaphragm blades 20, the higher the precision of the exposure unit 100, the better the effect of the diaphragm blades 20 in blocking or opening the first through hole 103; the smaller the number of the diaphragm blades 20, the less difficult the exposure unit 100 is to be manufactured, and the lower the production cost. In the embodiment of the present application, the number of the diaphragm blades 20 is 5, and on the one hand, the effect of blocking or opening the first through hole 103 is better for the number of the diaphragm blades 20, and on the other hand, the production cost of the exposure unit 100 is lower, and the installation of the diaphragm blades 20 is facilitated. That is, the number of the aperture blades 20 is set to 5, and a balance is obtained between the light amount control effect and the product cost.

Referring to fig. 3, in some embodiments, each aperture blade 20 includes a tail portion 201 and a head portion 202, each aperture blade 20 may be provided with a second guide hole 203, and each second guide hole 203 corresponds to the first guide hole 106 of the base 10 and is arc-shaped. Each diaphragm blade 20 is further provided with a connecting hole 204, and each connecting hole 204 corresponds to the connecting shaft 107 on the base 10. Wherein the second guide hole 203 is located at the tail portion 201 of the diaphragm blade 20, and the connection hole 204 is located between the head portion 202 and the tail portion 201 of the diaphragm blade 20. When the plurality of diaphragm blades 20 are mounted to the base 10, the connecting shafts 107 on the base 10 are inserted into the corresponding connecting holes 204. Each diaphragm blade 20 can rotate about the connecting shaft 107 to partially block or partially open the first through hole 103. When the diaphragm blades 20 are mounted on the base 10, the tail portion 201 of each diaphragm blade 20 and the base body 11 are located on opposite sides of the head portion 202 of one adjacent diaphragm blade 20, respectively, and the head portion 202 of each diaphragm blade 20 is located between the tail portion 201 of the other adjacent diaphragm blade 20 and the base body 11. That is, the tail 201 of each diaphragm blade 20 is located above the head 202 of one adjacent diaphragm blade 20, and the head 202 of each diaphragm blade 20 is located below the tail 201 of another adjacent diaphragm blade 20. The number of the diaphragm blades 20 is 5 for example. The head 202 of the first diaphragm blade 21 is located between the tail 201 of the second diaphragm blade 22 and the base body 11, the head 202 of the second diaphragm blade 22 is located between the tail 201 of the third diaphragm blade 23 and the base body 11, the head 202 of the third diaphragm blade 23 is located between the tail 201 of the fourth diaphragm blade 24 and the base body 11, the head 202 of the fourth diaphragm blade 24 is located between the tail 201 of the fifth diaphragm blade 25 and the base body 11, and the head 202 of the fifth diaphragm blade 25 is located between the tail 201 of the first diaphragm blade 21 and the base body 11.

With continued reference to fig. 1 and 2, in some embodiments, the light shielding member 30 may include a light shielding member body 31 and at least two connecting arms 32. The second through hole 301 is formed in the light shielding body 31, and the light shielding body 31 may further be formed with a plurality of third guide holes 302, and the plurality of third guide holes 302 are disposed around the second through hole 301 at intervals. The third vias 302 correspond to the first vias 106 and the second vias 203, respectively, and are arc-shaped. The plurality of third vias 302 may be 2, 3, 4, 5, 6, 7, 8, 9, 10, or more. In the present embodiment, the number of the third guide holes 302 is 5. When the plurality of diaphragm blades 20 are mounted on the base 10 through the connecting shaft 107, the connecting shaft 107 may be sequentially inserted through the connecting hole 204 and the corresponding third guide hole 302, so that the light blocking member 30 may prevent the diaphragm blades 20 from being separated from the connecting shaft 107 when rotating around the connecting shaft 107. In some examples, the length of the third guide hole 302 may be greater than the length of the corresponding second guide hole 203, and the connecting shaft 107 may be better inserted into the third guide hole 302. In other examples, the width of the third via 302 may be greater than the width of the corresponding second via 203.

At least two connecting arms 32 each project from the periphery of the shade body 31. At least two connecting arms 32 are coupled to the base body 11. The connecting arms 32 may be 2, 3, 4, 5, 6, 7, 8, 9, 10 or more. At least two connecting arms 32 are evenly distributed around the center of the second through hole 301. For example, when the number of the connecting arms 32 is two, the two connecting arms 32 are symmetrical with respect to the center of the light-shielding member body 31 (i.e., the center of the second through-hole 301); when the number of the connecting arms 32 is three, the connecting line of the three connecting arms 32 may be an equilateral triangle. The at least two connecting arms 32 are uniformly distributed around the center of the second through hole 301, so that when the light shielding member 30 is combined with the base body 11, the force applied to the light shielding member body 31 is more uniform, that is, the light shielding member body 31 is more stable in combination with the base body 11. Of course, in other embodiments, the at least two connecting arms 32 may be non-uniformly distributed around the center of the second through hole 301 at the periphery of the light shield body 31, and are not limited to being uniformly distributed around the center of the second through hole 301 in the present embodiment. The at least two connecting arms 32 are non-uniformly distributed around the center of the second through hole 301 at the periphery of the light shielding member body 31, so that when the light shielding member 30 is combined with the base body 11, the light shielding member 30 must be installed in a specific direction to prevent the light shielding member 30 from being installed to cause the third guide hole 302 on the light shielding member 30 not to correspond to the first guide hole 106 on the base body 11. That is, the at least two connecting arms 32 are non-uniformly distributed around the center of the second through hole 301 at the periphery of the light shield body 31 to achieve the fool-proof effect.

The plurality of connecting arms 32 correspond to connecting posts 108 on the base 10. Each connecting post 108 is pierced through the corresponding connecting arm 32 when the shade 30 is mounted to the base 10. For example, the connecting arm 32 is provided with a through hole corresponding to the connecting post 108, and the connecting post 108 is clamped into the through hole on the connecting arm 32, so that the light shielding member 30 and the base 10 can be connected. In one example, when the number of the connecting arms 32 is two, the number of the connecting posts 108 is also two, and the two connecting posts 108 are respectively disposed at the first notch 121 and the second notch 122. When the light shielding member 30 is connected to the base body 11, the two connecting arms 32 are respectively engaged with the two corresponding connecting posts 108. In another example, when the number of the connecting arms 32 is three, the number of the connecting posts 108 is also three, one of the three connecting posts 108 is disposed at the first gap 121, and the remaining two connecting posts 108 are disposed at the second gap 122. When the light shielding member 30 is connected to the base body 11, the three connecting arms 32 are respectively engaged with the corresponding three connecting posts 108.

With continued reference to fig. 1 and 2, in some embodiments, the moveable member 40 includes first and second opposing

sides

402, 403. The first surface 402 of the movable member 40 faces the first surface 111 of the base body 11. A plurality of guide rods 404 are provided on the first surface 402 of the movable member 40, and the plurality of guide rods 404 are used for driving the corresponding aperture blade 20 to rotate when the movable member 40 rotates. The plurality of guide rods 404 are arranged around the third through hole 401 at intervals, the plurality of guide rods 404 correspond to the first guide holes 106, the second guide holes 203 and the third guide holes 302 respectively, and each guide rod 404 sequentially penetrates through the corresponding third guide hole 302 and the corresponding second guide hole 203 and extends into the corresponding first guide hole 106. The number of the guide rods 404 is the same as the number of the aperture blades 20, and each guide rod 404 corresponds to one aperture blade 20. Since the first guide hole 106, the second guide hole 203 and the third guide hole 302 are respectively corresponding and arc-shaped, when the movable member 40 is mounted on the base 10, the guide rod 404 drives the aperture blade 20 to rotate along the arc-shaped tracks of the first guide hole 106, the second guide hole 203 and the third guide hole 302 during the rotation of the movable member 40, and the aperture blade 20 can rotate around the connecting member 105 under the driving of the guide rod 404 to at least partially block or at least partially open the first through hole 103 by the aperture blade 20. The exposure unit 100 according to the embodiment of the application can prevent the moving member 40 from having a problem that the shielding effect of the plurality of aperture blades 20 or the opening effect of the first through hole 103 is poor due to the dislocation phenomenon in the rotating process of the moving member 40 by inserting the guide rod 404 on the moving member 40 through the third guide hole 302, the second guide hole 203 and extending into the first guide hole 106, wherein the third guide hole 302 and the first guide hole 106 can limit the guide rod 404. Wherein the width of the third via 302 is greater than the width of the corresponding second via 203. Since the width of the third guide hole 302 is greater than the width of the corresponding second guide hole 203, the guide rod 404 is more easily inserted into the second guide hole 203 through the third guide hole 302, and the guide rod 404 has a larger moving space in the third guide hole 302 during the rotation of the movable member 40, thereby increasing the rotation efficiency of the movable member 40. During the rotation of the movable element 40, the guide rod 404 rotates in the arc-shaped third guide hole 302 and the second guide hole 203, and if the length of the third guide hole 302 is less than or equal to the length of the corresponding second guide hole 203, the third guide hole 302 limits the rotation range of the guide rod 404, thereby reducing the effect that the guide rod 404 on the movable element 40 drives the aperture blade 20 to block or open the first through hole 103. The length of the third guide hole 302 is greater than the length of the corresponding second guide hole 203, so that the third guide hole 302 does not limit the rotation range of the guide rod 404, thereby improving the effect of the guide rod 404 driving the aperture blade 20 to block or open the first through hole 103.

The diameter of the second through hole 301 of the light-shielding member 30 is smaller than the diameter of the third through hole 401 of the movable member 40. On the one hand, the larger third through hole 401 of the movable member 40 reduces the mass of the movable member 40, which facilitates the rotation of the movable member 40. On the other hand, the smaller second through hole 301 of the light-shielding member 30 allows the amount of light entering the exposure unit 100 to be controlled, so as to avoid the poor shielding effect of the diaphragm blade 20 due to the larger second through hole 301.

Referring to fig. 1 and fig. 2, in some embodiments, the movable member 40 is provided with arc-shaped fourth guide holes 405, the fourth guide holes 405 are disposed at intervals around the third through hole 401, and the plurality of fourth guide holes 405 respectively correspond to the plurality of third guide holes 302, the plurality of second guide holes 203, and the plurality of first guide holes 106. Each connecting member 105 may be sequentially inserted through the second via 203, the third via 302, and the fourth via 405. Of course, the connecting member 105 may be provided with only the corresponding second guiding hole 203 and the corresponding third guiding hole 302 without the fourth guiding hole 405, and at this time, the fourth guiding hole 405 may be used for the user to observe the rotation of the aperture blade 20. In addition, the connecting member 105 may not pass through the fourth guide hole 405 and the third guide hole 302, but only pass through the corresponding second guide hole 203, and at this time, the fourth guide hole 405 and the third guide hole 302 may be used for the user to observe the rotation of the aperture blade 20.

Specifically, in some embodiments, the width of fourth via 405 may be greater than the width of corresponding second via 203. The fourth guide hole 405 can be used to observe the rotation of the diaphragm blade 20 on the base 10, and the width of the fourth guide hole 405 is larger than the width of the corresponding second guide hole 203, which is beneficial for the user to observe the rotation of the diaphragm blade 20. In some embodiments, the length of fourth via 405 may be greater than the length of the corresponding second via 203. When the plurality of connecting members 105 are located on the first surface 111 of the base body 11, each connecting member 105 can pass through the fourth guiding hole 405, and at this time, since the length of the fourth guiding hole 405 is greater than the length of the corresponding second guiding hole 203, the fourth guiding hole 405 can be used for avoiding the plurality of connecting members 105, and the rotation of the aperture blade 20 can not be checked by the user.

The movable member 40 may include a movable member body 41 and a light blocking member 42. A recess 411 is opened in the peripheral wall of the moving member body 41, and a plurality of driven teeth 407 are formed on the peripheral wall of the moving member body 41 at the recess 411. The light blocking member 42 extends from the peripheral wall of the mover body 41. The light blocking member 42 may be provided at any position of the mover body 41 except for the recess 411. In the present embodiment, the light blocking member 42 is connected to the plurality of driven teeth 407, that is, the light blocking member 42 is disposed at one side of the notch 411. The second surface 403 of the movable member 40 is provided with a protrusion 408, the protrusion 408 may also be arc-shaped, and the length of the protrusion 408 is smaller than the length of the fourth guide hole 405.

When the mover 40 is mounted to the base 10, the peripheral wall of the mover body 41 abuts against the side wall 12 of the base 10. Specifically, the peripheral wall of the mover body 41 abuts against the plurality of spherical protrusions 1010. The number of the spherical protrusions 1010 may be two or more, and a plurality of the spherical protrusions 1010 may be uniformly distributed on the inner surface of the sidewall 12 of the susceptor 10. Of course, the plurality of spherical protrusions 1010 may be randomly distributed on the inner surface of the sidewall 12. In the exposure unit 100 according to the embodiment of the present invention, the plurality of spherical protrusions 1010 are disposed on the inner surface of the side wall 12 of the base 10, so that the contact area between the movable member body 41 and the side wall 12 is reduced, and the friction between the movable member 40 and the side wall 12 is smaller when the movable member rotates, so that the movable member can rotate more flexibly. Of course, in other embodiments, the peripheral wall of the mover body 41 may directly abut against the side wall 12 of the base 10.

With continued reference to fig. 1 and 2, in some embodiments, the exposure unit 100 may further include a cover 50, and the cover 50 is disposed on the first side 101 of the base 10 and forms a receiving cavity 14 together with the base 10. The receiving cavity 14 is similar to the receiving space 13 described above. The plurality of aperture blades 20, the light shielding member 30 and the movable member 40 are all positioned in the accommodating cavity 14. Specifically, the cover 50 is attached to the top surface 124 of the side wall 12 of the base 10, so that the cover 50 and the side wall 12 can protect the plurality of aperture blades 20, the light-blocking member 30, the movable member 40, and other elements in the receiving cavity 14.

Specifically, the cover 50 may include a cover body 51 and a relief member 52 disposed on the cover body 51. The cover body 51 has a fourth through hole 511, and the fourth through hole 511 corresponds to the first through hole 103, the second through hole 301, and the third through hole 401, and the optical axis OO' of the exposure unit 100 passes through the fourth through hole 511. The diameter of the fourth through hole 511 is smaller than that of the third through hole 401, and compared with the diameter of the fourth through hole 511 being larger than that of the third through hole 401, the diameter of the fourth through hole 511 is smaller than that of the third through hole 401, so that the cover 50 can protect the components in the accommodating cavity 14 more effectively.

The cover body 51 further has a plurality of fifth vias 512, the plurality of fifth vias 512 are disposed around the fourth via 511 at intervals, and the plurality of fifth vias 512 correspond to the plurality of first vias 106, the plurality of second vias 203, the plurality of third vias 302, and the plurality of fourth vias 405, respectively. The number of the fifth via 512 is the same as the number of the first via 106, the second via 203, the third via 302, and the fourth via 405. For example, the number of the fifth guide holes 512 is 5. The shape of the 5 fifth vias 512 is the same as the shape of the first via 106, the second via 203, the third via 302, and the fourth via 405, and they are all arc-shaped. When the cover 50 is mounted on the base 10, the connecting member 105 can sequentially pass through the second guide hole 203, the third guide hole 302, the fourth guide hole 405 and the fifth guide hole 512, and the plurality of guide holes make the aperture blade 20 on the connecting member 105 less prone to pop up, so that the stability is better and the guiding function of the guide rod 404 is better. Of course, the connecting member 105 may not pass through the fourth guide hole 405 and the fifth guide hole 512, that is, the connecting member 105 passes through the second guide hole 203 and the third guide hole 302 in sequence. At this time, the fourth guide hole 405 and the fifth guide hole 512 can be used to observe the rotation of the diaphragm blade 20; or when the exposure unit 100 is mounted, it is convenient for the user to adjust the position of the diaphragm blades 20.

The lid body 51 further has a first escape space 513 and a second escape space 514.

The first avoiding space 513 is spaced from the fourth through hole 511, that is, the first avoiding space 513 is not communicated with the fourth through hole 511, so as to prevent light from entering the accommodating cavity 14 from the first avoiding space 513.

The second clearance space 514 corresponds to the protrusion 408 of the movable member 40, and the width of the protrusion 408 may be smaller than the second clearance space 514, so that the protrusion 408 can be inserted into the second clearance space 514. Wherein the second avoidance space 514 is arc-shaped. The second escape space 514 can limit the protrusion 408 so that the movable member 40 can rotate around the optical axis OO' of the exposure unit 100 during the rotation process.

A plurality of second threaded holes 517 are further formed on the periphery of the cover body 51. The plurality of first screw holes 1011 correspond to the plurality of second screw holes 517, and the screws 90 pass through the second screw holes 517 and are locked into the first screw holes 1011, thereby mounting the cover 50 to the base 10.

The avoiding piece 52 is provided with a third avoiding space 521, and the avoiding piece 52 is a convex structure on the cover body 51. The first avoidance space 513, the second avoidance space 514, and the third avoidance space 521 all penetrate the lid body 51.

With continued reference to fig. 1 and 2, in some embodiments, the exposure unit 100 may further include a shutter structure 60, and the shutter structure 60 is combined with the second side 102 of the base 10. Specifically, the shutter structure 60 includes a housing 601, a driver 602, and a shutter blade 603. The base 601 is provided with a light hole 604, the light hole 604 corresponds to the first through hole 103, and the light hole 604 corresponds to the second through hole 301, the third through hole 401 and the fourth through hole 511. The light-passing hole 604 allows the optical axis OO' of the exposure unit 100 to pass through. Wherein the diameter of the light passing hole 604 is smaller than the diameter of the first through hole 103, so that the shutter blade 603 can better control the amount of light entering. The driver 602 is disposed on the base 601 near the second side 102 of the base 10, and the driver 602 is used to drive the shutter blade 603 to block or open the light-passing hole 604. The shutter blade 603 may be provided in plural, the plural shutter blades 603 are accommodated in the preset space 104, and the plural shutter blades 603 are provided around the light passing hole 604. The plurality of shutter blades 603 are movable within the preset space 104 by the driver 602 so that the shutter blades 603 block or open the light passing hole 604. In the embodiment of the present application, the number of the shutter blades 603 is two, and the driver 602 can control the moving direction of two shutter blades 603.

The base 601 further has an avoiding groove 605 and a plurality of third threaded holes 606, and the plurality of third threaded holes 606 correspond to the plurality of first threaded holes 1011 on the base 10 and the plurality of second threaded holes 517 on the cover body 51. When the base 601 is mounted to the second side 102 of the base 10, the screw 90 passes through the second threaded hole 517 and the first threaded hole 1011 and then is locked into the third threaded hole 606, so that the base 601, the base 10 and the cover 50 can be fixedly connected.

With continued reference to fig. 1 and fig. 2, in some embodiments, the exposure unit 100 may further include a driving device 70, and it should be noted that the avoiding groove 605 on the base 601 is used for avoiding the driving device 70, so as to better install the driving device 70. The driving device 70 is used for driving the movable member 40 to rotate on the base 10, and when the movable member 40 rotates, the aperture blade 20 is driven to rotate around the connecting member 105 to at least partially block or at least partially open the first through hole 103. The driving device 70 may include a driving member 71 and a driving gear 72. Specifically, the driving member 71 may be a driving motor or the like that can power the movable member 40. The driver 71 passes from the second side 102 of the base 10 through the second mounting hole 1012 to the first side 101 of the base 10. The driving gear 72 is located on the first side 101 and sleeved on the driving member 71, and the driving gear 72 is engaged with the plurality of driven teeth 407. The driving gear 72 is driven by the rotation of the driving member 71, and the engagement between the driving gear 72 and the plurality of driven teeth 407 drives the movable member 40 to rotate around the optical axis OO' of the exposure unit 100. It should be noted that the thickness of the driving gear 72 is greater than the thickness of the driven gear 407 on the movable member 40, so that the driven gear 407 can better engage with the driving gear 72 to prevent the driven gear 407 from disengaging from the driving gear 72 during the rotation.

In certain embodiments, the drive device 70 may further include a mounting member 73, the mounting member 73 being used to mount the drive device 70 to the base 10. The mounting member 73 corresponds to the first mounting hole 109 on the second side 112 of the base 10, and the driving device 70 is screwed to lock the mounting member 73 into the first mounting hole 109, so as to mount the driving device 70 on the base 10. The first avoiding space 513 on the cover body 51 corresponds to the driving gear 72 of the driving device 70, and the diameter of the first avoiding space 513 may be greater than or equal to the diameter of the driving gear 72, so that the driving gear 72 can rotate in the first avoiding space 513. That is, the first avoidance space 513 is for avoiding the driving gear 72.

With continued reference to fig. 1 and 2, in some embodiments, the exposure unit 100 may further include a position detection element 80, and the position detection element 80 is installed at the third notch 123. The third avoiding space 521 of the avoiding member 52 is used for avoiding the position detecting assembly 80, so that the position detecting assembly 80 can be better installed at the third gap 123. The light blocking member 42 on the movable member 40 can move in and out of the position detecting element 80 following the rotation of the movable member body 41, and the position detecting element 80 is used for detecting the position of the rotation of the movable member 40 according to the movement of the light blocking member 42.

In some embodiments, position detection assembly 80 may include a mounting bracket 81, a light emitter 82, and a light receiver 83. When the cover 50 is mounted on the base 10, the mounting frame 81 of the position detection assembly 80 in the third gap 123 may partially extend into the third avoidance space 521, so that the third avoidance space 521 can effectively protect the position detection assembly 80. One side of the mounting bracket 81 is provided with a groove 811. The light emitter 82 is disposed on one of the top wall 812 of the recess 811 and the bottom wall 813 of the recess 811, and the light receiver 83 is disposed on the other of the top wall 812 of the recess 811 and the bottom wall 813 of the recess 811. That is, the light emitter 82 is disposed on the top wall 812 of the recess 811, and the light receiver 83 is disposed on the bottom wall 813 of the recess 811; alternatively, the light emitter 82 is disposed on the bottom wall 813 of the recess 811, and the light receiver 83 is disposed on the top wall 812 of the recess 811. The light emitter 82 may emit a light signal, for example, the light emitter 82 may emit infrared rays, ultraviolet rays, or the like. The optical receiver 83 may receive the optical signal emitted by the optical transmitter 82. Since the light emitter 82 and the light receiver 83 are respectively disposed on the bottom wall 813 and the top wall 812 of the recess 811, when the light blocking member 42 enters the recess 811, the light transmission between the light emitter 82 and the light receiver 83 can be blocked, and therefore, the position detecting assembly 80 can obtain the rotating position of the movable member 40.

In assembling the exposure unit 100 of the embodiment of the present application, the shutter structure 60 is installed on the second side 102 of the base 10, wherein the shutter blade 603 is received in the movable space 104 of the base 10, so that the shutter blade 603 rotates to shield or open the light passing hole 604. The driving device 70 is installed on the second side 102 of the base 10, and the driving gear 72 of the driving device 70 penetrates from the second side 102 of the base 10 to the first side 101 of the base 10 through the second installation hole 1012. The position detecting device 80 is installed in the third notch 123 of the base 10. The plurality of diaphragm blades 20 are mounted on the base 10, the light shielding member 30 is connected to the connecting column 108 of the base 10 through the connecting arm 32, and each connecting member 105 sequentially penetrates through the connecting hole 204 and the third guide hole 302 to limit the diaphragm blades 20. The movable member 40 is mounted on the base 10, and the driven teeth 407 of the movable member 40 are engaged with the driving gear 72 of the driving device 70, and the plurality of guide rods 404 of the movable member 40 sequentially penetrate through the corresponding third guide holes 302 and the corresponding second guide holes 203 and extend into the first guide holes 106 of the base 10. The cover 50 is mounted on the base 10, wherein the first avoiding space 513 corresponds to the driving gear 72 to avoid the driving gear 72, the second avoiding space 514 corresponds to the projection 408 on the movable member 40, the avoiding member 52 corresponds to the position detecting device 80, and the screw 90 passes through the second threaded hole 517 and the first threaded hole 1011 and then is locked into the third threaded hole 606, so that the base 601, the base 10 and the cover 50 can be fixedly connected, thereby realizing the assembly of the exposure unit 100.

The exposure unit 100 of the embodiment of the application can drive the movable member 40 to rotate by controlling the driving device 70, and the plurality of guide rods 404 on the movable member 40 drive the corresponding aperture blade 20 to rotate along the arc of the second guide hole 203 and around the connecting member 105, so as to achieve the effect that the aperture blade 20 at least partially blocks or at least partially opens the first through hole 103, thereby facilitating a user to better control the light transmission amount of the exposure unit 100.

In some embodiments, the positions of the plurality of connecting members 105 (i.e., the connecting shafts 107) and the connecting holes 204 may be interchanged, and in particular, the plurality of connecting shafts (not shown) may be respectively disposed on the corresponding aperture blades 20, so that a plurality of connecting holes (not shown) corresponding to the connecting shafts may be formed on the first surface 111 of the base body 11, and the connecting holes may be disposed through the first surface 111 and the second surface 112 of the base body 11. When the diaphragm blades 20 are mounted on the base 10, the connecting shaft on each diaphragm blade 20 is pierced with a corresponding connecting hole. Of course, the connection hole may be formed through only the first surface 111 of the base body 11, not through the second surface 112, and the connection shaft on each aperture blade 20 extends into the connection hole on the corresponding base body 11.

In some embodiments, a plurality of guide rods (not shown) may be respectively disposed on the corresponding aperture blades 20, and correspondingly, the first surface 402 of the movable member 40 facing the base body 11 is provided with a plurality of arc-shaped fixing holes (not shown). A plurality of securing holes may extend through the first and

second faces

402, 403 of the moveable member 40, although a plurality of securing holes may not extend through the first and

second faces

402, 403 of the moveable member 40. The plurality of fixing holes are arranged around the third through hole 401 at intervals, and the plurality of guide rods correspond to the plurality of arc-shaped third guide holes 302 and the plurality of fixing holes respectively. Each guide rod penetrates through the corresponding third guide hole 302 and extends into the fixing hole. Since each guide rod is disposed on the corresponding diaphragm blade 20, the second guide hole 203 may not be formed on the diaphragm blade 20. When the movable member 40 is mounted on the base 10, the guide rod on the diaphragm blade 20 can penetrate through the third guide hole 302 and extend into the fixing hole, and during the rotation of the movable member 40, the guide rod on the diaphragm blade 20 is driven by the fixing hole to rotate, so that the diaphragm blade 20 rotates around the connecting member 105 to at least partially shield or at least partially open the first through hole 103 by the diaphragm blade 20.

In some embodiments, the through holes of the at least two connecting posts 108 and the plurality of connecting arms 32 are interchangeable. That is, the base body 11 is provided with a plurality of through holes (not shown) corresponding to the first notch 121 and the second notch 122, and the connecting arm 32 is provided with a plurality of connecting posts (not shown), so that when the light shielding member 30 is mounted on the base 10, the fixing effect of the light shielding member 30 is realized through the cooperation of the through holes and the connecting posts.

Referring to fig. 4, the present application further provides a lens assembly 1000, where the lens assembly 1000 includes a plurality of lens groups 1100 and the exposure unit 100 of any of the above embodiments, and the exposure unit 100 is disposed between the plurality of lens groups 1100. The number of the plurality of lens groups 1100 is 6, the 6 lens groups 1100 include a first lens group 1110, a second lens group 1120, a third lens group 1130, a fourth lens group 1140, a fifth lens group 1150 and a sixth lens group 1160 in sequence in the direction of the optical axis OO' of the lens assembly 1100, and in one example, the exposure unit 100 may be disposed between the third lens group 1130 and the fourth lens group 1140. In still another example, the exposure unit 100 may be disposed between the fourth lens group 1140 and the fifth lens group 1150. Of course, the exposure unit 100 may also be disposed between any other two lens groups 1110. Note that the optical axis OO 'of the exposure unit 100 coincides with the optical axis OO' of the lens assembly 1000. The lens assembly 1000 according to the embodiment of the present application can control the light of the plurality of lens groups 1110 by disposing the exposure unit 100 between the plurality of lens groups 1110, so as to achieve the amount of light passing required by the user.

The plurality of diaphragm blades 20 in the exposure unit 100 of the lens assembly 1000 according to the embodiment of the present application can be mounted on the base 10 through the connection member 105, and there is no need to add an additional element to cooperate with the base 10 to mount the diaphragm blades 20, so that the size of the exposure unit 100 in the optical axis OO' direction is reduced, which is beneficial to the miniaturization of the lens assembly 1000. In addition, the diaphragm blade 20 of the embodiment of the present application is directly mounted on the base 10 through the connecting member 105, so that the diaphragm blade 20 is not mounted in a narrow space formed between an additional element and the base 10, and the diaphragm blade 20 can be mounted in a rotating manner, thereby reducing the mounting difficulty of the diaphragm blade 20 and improving the assembly efficiency of the lens assembly 1000.

Referring to fig. 1 and 5 together, a photographing apparatus 2000 according to an embodiment of the present disclosure includes an image sensor 2100 and a lens assembly 1000, and the image sensor 2100 is configured to convert an optical signal passing through the lens assembly 1000 into an electrical signal for imaging. The lens assembly 1000 may include a plurality of lens groups 1100 and the exposure unit 100 of any of the above embodiments, and the exposure unit 100 is disposed between the plurality of lens groups 1100. The number of the plurality of lens groups 1100 is 6, the 6 lens groups 1100 include a first lens group 1110, a second lens group 1120, a third lens group 1130, a fourth lens group 1140, a fifth lens group 1150 and a sixth lens group 1160 in sequence in the direction of the optical axis OO' of the lens assembly 1100, and in one example, the exposure unit 100 may be disposed between the third lens group 1130 and the fourth lens group 1140. In still another example, the exposure unit 100 may be disposed between the fourth lens group 1140 and the fifth lens group 1150. Of course, the exposure unit 100 may also be disposed between any other two lens groups 1110. Note that the optical axis OO 'of the exposure unit 100 coincides with the optical axis OO' of the lens assembly 1000. The lens assembly 1000 according to the embodiment of the present application can control the light of the plurality of lens groups 1110 by disposing the exposure unit 100 between the plurality of lens groups 1110, so as to achieve the amount of light passing required by the user.

It can be understood that the shooting equipment of this application embodiment can be independent shooting device, for example camera, also can be the movable platform that contains the shooting function, for example contains the unmanned aerial vehicle of shooting function.

The plurality of diaphragm blades 20 in the photographing apparatus 2000 of the embodiment of the present application can be mounted on the base 10 through the connecting member 105 without adding an additional element to fit with the base 10 to mount the diaphragm blades 20, thereby reducing the size of the exposure unit 100 in the optical axis OO' direction, which is advantageous for the miniaturization of the photographing apparatus 2000. In addition, the diaphragm blade 20 of the embodiment of the present application is directly mounted on the base 10 through the connecting member 105, so that the diaphragm blade 20 is not mounted in a narrow space formed between an additional element and the base 10, and the diaphragm blade 20 can be mounted in a rotating manner, thereby reducing the mounting difficulty of the diaphragm blade 20 and improving the assembly efficiency of the photographing apparatus 2000.

Referring to fig. 1, 6 to 9, an assembling method of an exposure unit 100 according to an embodiment of the present disclosure includes: disposing a plurality of diaphragm blades 20 on a first side 101 of the base 10 around a first through hole 103 through a connector 105; fixing the light-shielding member 30 on the first side 101 such that the second through hole 301 of the light-shielding member 30 corresponds to the first through hole 103 of the base 10; and mounting the movable member 40 on the first side 101 such that the third through hole 401 of the movable member 40 corresponds to the second through hole 301.

The diaphragm blade 20 of the embodiment of the present application is directly mounted on the base 10 through the connecting piece 105, the diaphragm blade 20 is prevented from being mounted in a narrow space formed between an additional element and the base 10, because the connecting piece 105 on the base 10 is spaced around the first through hole 103, compared with a mode that the diaphragm blade 20 is mounted on the base 10 after being fixed by adding an element (for example, a diaphragm fixing ring) in the prior art, the diaphragm blade 20 is directly mounted on the base 10 through the connecting piece 105 in the embodiment of the present application, the mounting difficulty of the diaphragm blade 20 is reduced, and the assembling efficiency of the exposure unit 100 is improved.

In some embodiments, before the plurality of aperture blades 20 are mounted on the base 10, the driving device 70 may be further mounted in the first escape space 513 on the second side 102 of the base 10, and the driving device 70 is mounted and fixed by the mounting member 73 in the driving device 70. The shutter structure 60 is then mounted to the second side 102 of the base 10 and the shutter blade 603 is mounted within the pre-set space 104 of the base 10.

In some embodiments, the connector 105 is located on the first side 101 of the base 10 and the guide bar 404 is located on the first side 402 of the moveable member 40. Specifically, the assembling method of the exposure unit 100 may first mount a plurality of aperture blades 20 on the base 10, wherein each aperture blade 20 corresponds to one of the connectors 105. At least two connecting arms 32 of the light shielding member 30 are mounted on the connecting column 108 of the base 10, wherein the connecting member 105 can sequentially penetrate through the corresponding second guide holes 203 of the plurality of aperture blades 20 and the corresponding third guide holes 302 of the light shielding member 30. The movable member 40 is then mounted to the first side 101 of the base 10, wherein the plurality of guide rods 404 of the movable member 40 sequentially penetrate through the corresponding third guide holes 302 of the light shielding member 30 and the corresponding second guide holes 203 of the aperture blade 20 and extend into the corresponding first guide holes 106 of the base 10, and the driven teeth 407 of the movable member 40 are engaged with the driving gear 72.

In some embodiments, the connecting member 105 is disposed on the first side 101 of the base 10, the guide bar 404 is disposed on each aperture blade 20, and the first surface 402 of the movable member 40 facing the base body 11 is provided with a plurality of arc-shaped fixing holes. Specifically, the assembling method of the exposure unit 100 may first mount a plurality of aperture blades 20 on the base 10, wherein each aperture blade 20 includes a connecting hole, and each connecting member 105 corresponds to one connecting hole. And then at least two connecting arms 32 of the light shielding member 30 are mounted on the connecting column 108 of the base 10, wherein the connecting member 105 can sequentially penetrate through the corresponding second guide holes 203 of the plurality of aperture blades 20 and the corresponding third guide holes 302 of the light shielding member 30, and the guide rod 404 of each aperture blade 20 penetrates through the corresponding third guide hole 302 of the light shielding member 30. The movable member 40 is then mounted to the first side 101 of the base 10 such that the guide bar 404 extends into the fixed aperture and the driven tooth 407 on the movable member 40 engages the drive gear 72.

Referring to fig. 1, 10 and 11, in some embodiments, after the movable member 40 is mounted on the base 10, the position detection device 80 may be mounted on the third notch 123, the cover 50 may be mounted on the top surface of the sidewall 12 of the base 10, and the fourth through hole 511 of the cover 50 corresponds to the first through hole 103, the second through hole 301 and the third through hole 401 and allows the optical axis OO' of the exposure unit 100 to pass through. The plurality of second screw holes 517 in the cover 50, the plurality of first screw holes 1011 in the base 10, and the plurality of third screw holes 606 in the shutter structure 60 are then fixedly connected by screws 90. After the cover 50 is mounted on the first side 101 of the base 10, the cover 50 and the base 10 together form the receiving cavity 14, and at this time, the plurality of aperture blades 20, the light-shielding member 30 and the movable member 40 are all located in the receiving cavity 14.

Referring to fig. 12, 14 and 15 in turn, in some embodiments, the plurality of aperture blades 20 includes N aperture blades 20, and the connecting member 105 includes N connecting shafts 107, where N is greater than 2. For example, N can be 2, 3, 4, 5, 6, 7, 8, 9, 10, and so forth. Specific mounting manners of the N diaphragm blades 20 disposed on the first side 101 of the base 10 around the first through hole 103 by the connection member 105 may include: the first diaphragm blade 21 is provided on the first side 101 through the first connecting shaft 1071; the second diaphragm blade 22 is provided on the first side 101 via a second connecting shaft 1072 such that the tail 201 of the second diaphragm blade 22 and the base body 11 are located on opposite sides of the head 202 of the first diaphragm blade 21, respectively; the nth diaphragm blade 20 is disposed on the first side 101 through the nth connecting shaft 107N, and the nth diaphragm blade 2N is rotated about the nth connecting shaft 107N until the tail portion 201 of the nth diaphragm blade 2N and the base body 11 are respectively located on opposite sides of the head portion 202 of the N-1 th diaphragm blade 2(N-1), and the head portion 202 of the nth diaphragm blade 2N is located between the base body 11 and the tail portion 201 of the first diaphragm blade 21. That is, when the number of the diaphragm blades 20 is N, the tail portion 201 of each diaphragm blade 20 may be directly located above the head portion 202 of one adjacent diaphragm blade 20 from the first diaphragm blade 21 up to the N-1 th diaphragm blade 2(N-1), and the head portion 202 of each diaphragm blade 20 may be located below the tail portion 201 of the other adjacent diaphragm blade 20 up to the N-th diaphragm blade 2N may be rotatably mounted.

In the prior art, the diaphragm blades 20 are fixed by the engagement of the diaphragm fixing ring and the shutter base, and therefore, when a plurality of diaphragm blades 20 are mounted, the diaphragm blades 20 cannot be rotated after each diaphragm blade 20 is mounted to the diaphragm fixing ring, which makes it difficult to mount the last several diaphragm blades 20, and reduces the assembly efficiency of the exposure unit 100. In contrast to the disadvantages of the prior art, the exposure unit 100 of the embodiment of the present application directly mounts the plurality of diaphragm blades 20 on the base 10, not only without the limitation of the mounting space formed by the shutter base and the diaphragm fixing ring, but also each diaphragm blade 20 can rotate about the connecting shaft 107 during mounting, and particularly when the last several diaphragm blades 20 are mounted, the tail portion 201 of the diaphragm blade 20 can be rotated above the head portion 202 of the previous diaphragm blade 20 and the head portion 202 can be rotated below the tail portion 201 of the next diaphragm blade 20. The installation of the diaphragm blades 20 is made simpler, improving the assembly efficiency of the exposure unit 100.

Referring to fig. 12, 13, 14 and 15 in sequence, in some embodiments, the plurality of aperture blades 20 includes N aperture blades 20, and the plurality of connecting members 105 includes N connecting shafts 107, where N is greater than 3. For example, N can be 3, 4, 5, 6, 7, 8, 9, 10, and so forth. Specific mounting manners of the N diaphragm blades 20 disposed on the first side 101 of the base 10 around the first through hole 103 by the connection member 105 may include: the first diaphragm blade 21 is provided on the first side 101 through the first connecting shaft 1071; the second diaphragm blade 22 is provided on the first side 101 via a second connecting shaft 1072 such that the tail 201 of the second diaphragm blade 22 and the base body 11 are located on opposite sides of the head 202 of the first diaphragm blade 21, respectively; the N-1 th diaphragm blade 2(N-1) is arranged on the first side 101 through the N-1 th connecting shaft 107(N-1), and the N-1 th diaphragm blade 2(N-1) is rotated around the N-1 th connecting shaft 107(N-1) until the tail 201 of the N-1 diaphragm blade 2(N-1) and the base body 11 are respectively positioned on two opposite sides of the head 202 of the N-2 th diaphragm blade 2 (N-2); and the Nth diaphragm blade 20 is disposed on the first side 101 through the Nth connecting shaft 107N, and the Nth diaphragm blade 2N is rotated around the Nth connecting shaft 107N until the tail portion 201 of the Nth diaphragm blade 2N and the base body 11 are respectively located on the opposite sides of the head portion 202 of the (N-1) th diaphragm blade 2(N-1), and the head portion 202 of the Nth diaphragm blade 20 is located between the base 10 and the tail portion 201 of the first diaphragm blade 21. In the present embodiment, the rotational attachment is started from the last two diaphragm blades 20 among the N diaphragm blades 20, and in this case, the attachment manner of the plurality of diaphragm blades 20 is further simplified.

Specifically, N is 5 for example. The 5 diaphragm blades 20 include a first diaphragm blade 21, a second diaphragm blade 22, a third diaphragm blade 23, a fourth diaphragm blade 24, and a fifth diaphragm blade 25, and the connecting member 105 includes a first connecting shaft 1071, a second connecting shaft 1072, a third connecting shaft 1073, a fourth connecting shaft 1074, and a fifth connecting shaft 1075. The specific installation manner in which the 5 diaphragm blades 20 are disposed on the first side 101 of the base 10 around the first through hole 103 by the connection member 105 may include: the first diaphragm blade 21 is disposed on the first side 101 of the base 10 through the first connecting shaft 1071; the second diaphragm blade 22 is provided on the first side 101 of the base 10 via a second connecting shaft 1072 such that the tail 201 of the second diaphragm blade 22 and the base body 11 are located on opposite sides of the head 202 of the first diaphragm blade 21, respectively; the third diaphragm blade 23 is provided on the first side 101 of the base 10 via a third connecting shaft 1073 such that the tail 201 of the third diaphragm blade 23 and the base body 11 are located on opposite sides of the head 202 of the second diaphragm blade 22, respectively; the fourth diaphragm blade 24 is disposed on the first side 101 of the base 10 via the fourth connecting shaft 1074, and the fourth diaphragm blade 24 is rotated about the fourth connecting shaft 1074 until the tail 201 of the fourth diaphragm blade 24 and the base body 11 are respectively located on the opposite sides of the head 202 of the third diaphragm blade 23; and the fifth diaphragm blade 25 is disposed on the first side 101 of the base 10 by the fifth connecting shaft 1075, and the fifth diaphragm blade 25 is rotated about the fifth connecting shaft 1075 until the trailing portion 201 of the fifth diaphragm blade 25 and the base body 11 are located on opposite sides of the leading portion 202 of the fourth diaphragm blade 24, respectively, and the leading portion 202 of the fifth diaphragm blade 25 is located between the base body 11 and the trailing portion 201 of the first diaphragm blade 21.

In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the various embodiments or examples and features of the various embodiments or examples described in this specification can be combined and combined by those skilled in the art without contradiction.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

Although embodiments of the present application have been shown and described above, it is to be understood that the above embodiments are exemplary and not to be construed as limiting the present application, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims

1. An exposure unit, characterized by comprising: the device comprises a base, a plurality of aperture blades, a shading piece and a movable piece which are arranged in sequence;

the base comprises a first side and a second side which are opposite to each other, the base is provided with a first through hole penetrating through the first side and the second side, and the second side is provided with a preset space for the shutter blade to move;

the plurality of diaphragm blades are arranged around the first through hole and are respectively arranged on the first side through a connecting piece on the base or a connecting piece on each diaphragm blade;

the shading piece is fixed on the first side and provided with a second through hole;

the movable piece is arranged on the first side, the movable piece is provided with a third through hole, and the first through hole, the second through hole and the third through hole respectively correspond to each other and are all used for the optical axis of the exposure unit to pass through; the movable piece can rotate around the optical axis and can drive the plurality of aperture blades to rotate around the connecting piece so as to at least partially block or at least partially open the first through hole when rotating.

2. The exposure unit according to claim 1, wherein the base includes:

a base body, a first face of the base body being located at the first side, a second face of the base body being located at the second side; and

the side wall extends from the edge of the first surface of the base body, the side wall and the base body jointly form an accommodating space, and the plurality of aperture blades, the shading piece and the moving piece are all arranged in the accommodating space.

3. The exposure unit according to claim 2, wherein the base body defines a plurality of first guide holes therethrough, each of the diaphragm blades defines a second guide hole therethrough, the light shielding member defines a plurality of third guide holes, and the plurality of first guide holes, the plurality of second guide holes, and the plurality of third guide holes are respectively corresponding and arc-shaped.

4. The exposure unit according to claim 3, wherein a plurality of guide rods are provided on a first surface of the movable member facing the base body, the plurality of guide rods being configured to drive the aperture blades to rotate when the movable member rotates;

the guide rods are arranged around the third through holes at intervals, the guide rods correspond to the first guide holes, the second guide holes and the third guide holes respectively, and each guide rod penetrates through the corresponding third guide hole and the corresponding second guide hole in sequence and extends into the corresponding first guide hole.

5. The exposure unit according to claim 2, wherein a plurality of guide rods are respectively provided on the corresponding aperture blades, the plurality of guide rods being configured to drive the corresponding aperture blades to rotate when the movable member rotates;

the moving part is towards set up curved a plurality of fixed orificess on the first face of base body, and is a plurality of the fixed orificess encircles the third through hole interval sets up, and is a plurality of the guide arm corresponds respectively with a plurality of curved third guide hole and a plurality of the fixed orificess, every the guide arm is worn to establish corresponding third guide hole and is stretched into the fixed orifices.

6. The exposure unit according to claim 4 or 5, wherein the movable member is further provided with arc-shaped fourth guide holes, the fourth guide holes are arranged at intervals around the third guide hole, and a plurality of the fourth guide holes correspond to a plurality of the third guide holes, respectively.

7. The exposure unit according to any one of claims 3 to 6, wherein the connection member includes a connection shaft; wherein:

the connecting shafts extend from the first surface of the base body and are positioned in the accommodating space, and each connecting shaft penetrates through the corresponding aperture blade and the corresponding third guide hole; or

The connecting shafts are respectively arranged on the corresponding aperture blades, a plurality of connecting holes corresponding to the connecting shafts are formed in the first surface of the base body, and each connecting shaft penetrates through the corresponding connecting hole.

8. The exposure unit according to claim 3, wherein the width of the third via is larger than the width of the corresponding second via; and/or

The length of the third guide hole is greater than the length of the corresponding second guide hole.

9. The exposure unit according to claim 7, wherein the width of the fourth via is larger than the width of the corresponding second via; and/or

The length of the fourth guide hole is greater than the length of the corresponding second guide hole.

10. The exposure unit of claim 3, wherein a plurality of the third vias are spaced around the second via.

11. The exposure unit according to claim 2, wherein the tail portion of each of the aperture blades and the base body are located on opposite sides of the head portion of one adjacent aperture blade, respectively, and the head portion of each of the aperture blades is located between the tail portion of the other adjacent aperture blade and the base body.

12. The exposure unit according to claim 2, wherein a diameter of the second through hole is smaller than a diameter of the third through hole.

13. The exposure unit according to claim 2, wherein the light-shielding member comprises:

the second through hole is formed in the shading body; and

at least two connecting arms, at least two the connecting arm all is followed the peripheral protrusion of shading body extends, at least two the connecting arm with the base body combines.

14. The exposure unit according to claim 13, wherein the side wall has a first notch and a second notch, the first side has at least two connecting posts corresponding to the at least two connecting arms, one of the connecting posts is located at the first notch, the other connecting posts are located in the second notch, and the at least two connecting posts are engaged with the at least two connecting arms.

15. The exposure unit according to claim 2, wherein a peripheral wall of the movable member is formed with a plurality of driven teeth, the exposure unit further comprising:

a drive passing from the second side to the first side; and

the driving gear is located on the first side and sleeved on the driving piece, and the driving gear is meshed with the plurality of driven teeth.

16. The exposure unit according to claim 15, wherein the movable member includes:

the movable piece body, the perisporium of movable piece body has seted up the notch, and a plurality of driven tooth forms in notch department, the perisporium of movable piece body with the lateral wall is contradicted.

17. The exposure unit according to claim 16, wherein a peripheral wall of the movable member body directly abuts against an inner surface of the side wall; or

The inner surface of the side wall is provided with a plurality of spherical protrusions, and the peripheral wall of the moving part body is abutted against the plurality of spherical protrusions.

18. The exposure unit according to claim 16, wherein the side wall is opened with a third notch, the exposure unit further comprising a position detection assembly mounted on the base body at the third notch; the movable part further comprises a light blocking part, the light blocking part extends from the peripheral wall of the movable part body, the light blocking part can enter and exit the position detection assembly along with the rotation of the movable part body, and the position detection assembly is used for detecting the rotating position of the movable part according to the entrance and exit of the light blocking part.

19. The exposure unit according to claim 18, wherein the light blocking member is in contact with a plurality of the driven teeth.

20. The exposure unit according to claim 18, wherein the position detection member includes:

one side of the mounting rack is provided with a groove;

a light emitter; and

an optical receiver;

wherein the light emitter is disposed on one of a top wall of the recess and a bottom wall of the recess, and the light receiver is disposed on the other of the top wall of the recess and the bottom wall of the recess; when the light blocking piece enters the groove, light transmission between the light emitter and the light receiver can be blocked.

21. The exposure unit according to claim 1, further comprising:

the cover body is arranged on the first side and forms an accommodating cavity together with the base, and the plurality of aperture blades, the shading piece and the moving piece are all located in the accommodating cavity.

22. The exposure unit according to claim 21, wherein the cover body comprises:

the cover body is provided with a fourth through hole, the fourth through hole corresponds to the first through hole, the second through hole and the third through hole and allows the optical axis to pass through, and the cover body is arranged on the top surface of the side wall.

23. The exposure unit according to claim 22, wherein the cover body further defines fifth guide holes, the fifth guide holes are disposed at intervals around the fourth guide hole, and a plurality of the fifth guide holes correspond to and are arc-shaped with the first guide holes defined in the base, the second guide holes defined in the aperture blades, the third guide holes defined in the light-shielding member, and the fourth guide holes defined in the movable member, respectively.

24. The exposure unit according to claim 22, wherein the cover body further defines a first avoiding space for avoiding a driving gear provided on the first side, and the first avoiding space is spaced from the fourth through hole.

25. The exposure unit according to claim 22, wherein the cover body further defines a second escape space;

the moving part further comprises a convex block arranged on the second surface of the moving part, the second surface of the moving part is opposite to the first surface of the moving part, and the convex block penetrates through the second avoiding space.

26. The exposure unit of claim 25, wherein the second avoidance space is arcuate.

27. The exposure unit according to claim 25, wherein the cover further comprises:

the cover body is provided with a dodging piece, the dodging piece is provided with a third dodging space, and the third dodging space penetrates through the cover body.

28. The exposure unit according to claim 1, further comprising:

a shutter structure, the second side of the base being bonded to the shutter structure.

29. The exposure unit of claim 28, wherein the shutter structure comprises:

the base body is provided with a light through hole, and the light through hole corresponds to the first through hole and is used for the optical axis to pass through;

the driver is arranged on one side, close to the second side, of the seat body; and

the shutter blades are accommodated in the preset space, are arranged around the light through hole and are connected with the driver, and the driver is used for driving the shutter blades to rotate so as to shield or open the light through hole.

30. The exposure unit according to claim 28, wherein the base is provided with an avoiding groove for avoiding a driving member, and the driving member is configured to drive the movable member to rotate the aperture blade to at least partially block or at least partially open the first through hole.

31. A lens assembly, comprising:

a plurality of lens groups; and

the exposure unit of any one of claims 1-30, which is disposed between a plurality of the lens groups.

32. A photographing apparatus, characterized by comprising:

an image sensor; and

the lens assembly of claim 31, the image sensor to convert an optical signal passing through the lens assembly into an electrical signal for imaging.

33. A method of assembling an exposure unit, comprising:

disposing a plurality of diaphragm blades on a first side of the base around the first through hole via a connecting member;

fixing a light shielding piece on the first side, and enabling a second through hole of the light shielding piece to correspond to the first through hole of the base; and

and the moving piece is arranged on the first side, and the third through hole of the moving piece corresponds to the second through hole.

34. The assembling method of an exposure unit according to claim 33, wherein the plurality of diaphragm blades includes N diaphragm blades, and the connecting member includes N connecting shafts, where N is greater than 2;

a plurality of the diaphragm blades are disposed on the first side of the base around the first through hole by the connection member, including:

the first diaphragm blade is arranged on the first side through a first connecting shaft;

the second diaphragm blade is arranged on the first side through a second connecting shaft, and the tail part of the second diaphragm blade and the base body of the base are respectively positioned on two opposite sides of the head part of the first diaphragm blade;

the Nth diaphragm blade is arranged on the first side through an Nth connecting shaft and rotates around the Nth connecting shaft until the tail part of the Nth diaphragm blade and the base body are respectively positioned on two opposite sides of the head part of the (N-1) th diaphragm blade, and the head part of the Nth diaphragm blade is positioned between the base body and the tail part of the first diaphragm blade.

35. The assembling method of an exposure unit according to claim 33, wherein the plurality of diaphragm blades includes N diaphragm blades, and the plurality of connecting members includes N connecting shafts, where N is greater than 3;

the N-1 diaphragm blade is arranged on the first side through an N-1 connecting shaft and rotates around the N-1 connecting shaft until the tail part of the N-1 diaphragm blade and the base body are respectively positioned on two opposite sides of the head part of the N-2 diaphragm blade; and

36. The assembling method of an exposure unit according to claim 33, wherein the plurality of diaphragm blades include a first diaphragm blade, a second diaphragm blade, a third diaphragm blade, a fourth diaphragm blade, and a fifth diaphragm blade, and the connecting member includes a first connecting shaft, a second connecting shaft, a third connecting shaft, a fourth connecting shaft, and a fifth connecting shaft;

a plurality of the diaphragm blades set the first side of the base around the first through hole through a plurality of the connecting shafts, including:

the first diaphragm blade is arranged on the first side of the base through a first connecting shaft;

the second diaphragm blade is arranged on the first side of the base through a second connecting shaft, and the tail part of the second diaphragm blade and the base body of the base are respectively positioned on two opposite sides of the head part of the first diaphragm blade;

the third diaphragm blade is arranged on the first side of the base through a third connecting shaft, and the tail part of the third diaphragm blade and the base body are respectively positioned on two opposite sides of the head part of the second diaphragm blade;

the fourth diaphragm blade is arranged on the first side of the base through a fourth connecting shaft and rotates around the fourth connecting shaft until the tail part of the fourth diaphragm blade and the base body are respectively positioned on two opposite sides of the head part of the third diaphragm blade; and

the fifth diaphragm blade is arranged on the first side of the base through a fifth connecting shaft, and the fifth diaphragm blade is rotated around the fifth connecting shaft until the tail of the fifth diaphragm blade and the base body are respectively located on two opposite sides of the head of the fourth diaphragm blade, and the head of the fifth diaphragm blade is located between the base body and the tail of the first diaphragm blade.

37. The method of assembling an exposure unit according to claim 33, further comprising:

the installation lid is in first side, the lid with the base forms jointly accepts the chamber, a plurality of the diaphragm blade, the light-shading piece, and the moving part all is located accept the intracavity.