WO2022166561A1

WO2022166561A1 - Shutter structure and camera

Info

Publication number: WO2022166561A1
Application number: PCT/CN2022/071946
Authority: WO
Inventors: 杨金华; 陈诚; 袁炜军
Original assignee: 杭州微影软件有限公司
Priority date: 2021-02-02
Filing date: 2022-01-14
Publication date: 2022-08-11
Also published as: CN214278589U

Abstract

A shutter structure and a camera. The shutter structure comprises a shutter body (100), a vapor chamber member and a shutter blade (300), wherein the shutter body (100) is provided with a light inlet hole (110); the vapor chamber member is attached to a surface of the shutter body (100); and the shutter blade (300) is movably connected to the shutter body (100). During an imaging process, the temperature is calibrated by means of the shutter body (100), which can improve the uniformity of temperature calibration.

Description

Shutter structure and camera

technical field

The present application relates to the technical field of photographing equipment, and in particular, to a shutter structure and a camera.

Background technique

With the advancement of science and technology, the application scope of photographing equipment such as cameras and cameras has become wider and wider. The camera is usually provided with a shutter structure, and the shutter structure is provided with a shutter body and a shutter blade. During the working process of the camera, the temperature at each position on the shutter body is used as the calibration reference value in the thermal imaging process.

SUMMARY OF THE INVENTION

The present application discloses a shutter structure and a camera.

In a first aspect, the present application provides a shutter structure, which includes: a shutter body, the shutter body is provided with a light inlet hole; a heat-spreading member, the heat-spreading member is attached to the surface of the shutter body; a shutter blade, The shutter blade is movably connected with the shutter body.

In a second aspect, the present application provides a camera including the above shutter structure.

Embodiments of the present application provide a shutter structure, which includes a shutter body, a heat equalizing member, and a shutter blade. The shutter blade is movably connected to the shutter body, and the heat generated by the operation of the shutter blade can be transferred to the shutter body. The heat soaking member is attached to the surface of the shutter body, and the heat at different positions on the shutter body can be diffused through the heat soaking member, so that the temperature at each position on the shutter body is basically the same. Therefore, when the temperature is calibrated by the shutter body during the imaging process, the uniformity of the temperature calibration can be improved, thereby improving the imaging quality of the camera.

Description of drawings

The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The schematic embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation of the present application.

FIG. 1 is a schematic cross-sectional view of a part of a shutter structure disclosed in an embodiment of the present application.

FIG. 2 is an exploded schematic diagram of a part of a shutter structure disclosed in an embodiment of the present application.

FIG. 3 is a schematic structural diagram of a shutter blade in a shutter structure disclosed in an embodiment of the present application.

FIG. 4 is a schematic cross-sectional view of a shutter structure disclosed in another embodiment of the present application.

FIG. 5 is an exploded schematic diagram of a shutter structure disclosed in another embodiment of the present application.

Description of reference numbers:

100-shutter body, 101-first cover, 102-second cover, 110-light inlet, 120-installation sink,

210-the first heat-spreading sheet, 211-the first avoidance hole, 220-the second heat-spreading sheet, 221-the second avoidance hole,

300-shutter blade, 310-drive hole, 320-installation hole.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below with reference to the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

During the working process of the camera, the heat generated by the movement of the shutter blade will cause the temperature of the shutter blade to rise, and the heat will diffuse from the shutter blade to the shutter body and other components connected to the shutter blade. However, affected by factors such as the installation position of the shutter blades, it is easy to have different temperatures at different positions on the shutter body, resulting in poor image calibration uniformity and poor image quality by the camera.

In view of this, embodiments of the present application provide a shutter structure and a camera.

Various embodiments of the present application will be described in detail below with reference to the accompanying drawings.

As shown in FIGS. 1-3 , an embodiment of the present application discloses a shutter structure, which can be applied in a camera. The shutter structure includes a shutter body 100 , a heat spreader, and a shutter blade 300 .

The shutter body 100 is provided with a light inlet hole 110 . Without being blocked by other components such as the shutter blade 300 , light outside the shutter structure can be incident into the shutter structure through the light inlet hole 110 to form an image. The size and shape of the light inlet hole 110 can be determined according to actual requirements, which are not limited here. The shutter body 100 may include at least two parts, the shutter blade 300 is sandwiched between the at least two parts, and driven by the driving mechanism, the shutter blade 300 may block the light inlet hole 110 and avoid (or expose) the entrance. switch between the states of the aperture 110 . In one embodiment of the present application, one of the at least two parts of the shutter body 100 may be made of a metal material, so as to enhance the overall structural strength of the shutter body 100 . In another embodiment of the present application, the shutter body 100 is a plastic structure as a whole, that is, the shutter body 100 is made of a plastic material. In this case, the insulation performance of the shutter body 100 can be improved, and the heat conduction efficiency inside the shutter body 100 can be reduced to a certain extent, so that the heat can be transferred to the heat equalizing member as much as possible.

The heat equalizing member is attached to the surface of the shutter body 100 . For example, the heat spreader can be fixed on the shutter body 100 by connecting parts such as clips, screws or rivets, and the heat spreader and the surface of the shutter body 100 can be attached to each other, so that the heat spreader has a relatively good heat conduction effect. Next, try to ensure that the temperatures at different positions on the shutter body 100 are substantially the same. For example, the heat soaking member can be made of a material with good thermal conductivity such as metal, so that the heat soaking member has the ability of uniform heat. The shape of the heat-spreading member can be similar to that of the shutter body 100, and the heat-spreading member can be covered outside the outer surface of the shutter body 100 to ensure that the heat at any position on the shutter body 100 can be diffused through the heat-spreading member , so that the temperature at each position on the shutter body 100 is substantially the same. It should be noted that, in the process of covering the shutter body 100 with the heat-spreading member, the heat-spreading member needs to avoid the light inlet hole 110 , so as to ensure that the light outside the shutter body 100 can enter the shutter body 100 through the light inlet hole 110 . within.

The shutter blade 300 is movably connected with the shutter body 100 , so that during the operation of the shutter structure, by moving the shutter blade 300 relative to the shutter body 100 , the shutter blade 300 can block or allow the outside light to enter the shutter structure through the light inlet hole 110 within. The number of the shutter blades 300 may be determined according to the specific shape of the shutter blades 300 , so that the light inlet hole 110 of the shutter body 100 is blocked by at least one shutter blade 300 . In an embodiment of the present application, the shutter blade 300 may be formed of a material with relatively high structural strength such as plastic, so as to ensure that the shutter blade can still maintain strong structural integrity in the process of frequent movement and improve its service life. In another embodiment of the present application, the shutter blade 300 may be a metal structural member, that is, the shutter blade 300 is made of a metal material, which can ensure that the shutter blade 300 has a high structural strength while making the shutter blade 300 have high structural strength. 300 is more efficient in heat conduction. In order to further improve the service life of the shutter blade 300, the shutter blade 300 can be a stainless steel structural member, that is, the shutter blade 300 is made of stainless steel material, so as to ensure that the shutter blade 300 has high structural strength and heat conduction efficiency at the same time, It is also possible to prevent corrosion due to the shutter structure operating in a relatively humid environment.

As described above, the shutter blade 300 may be driven to move relative to the shutter body 100 by the driving mechanism. The shutter blade 300 may be provided with a driving hole 310 and a mounting hole 320 . The driving mechanism can be connected with the shutter blade 300 through the driving hole 310, and the shutter blade 300 can be rotated and installed on the shutter body 100 through the installation hole 320, so that the shutter blade 300 can rotate relative to the shutter body 100 around the installation hole 320, so as to block the incoming light. hole 110 and the purpose of avoiding (or exposing) the light entrance hole 110 . The mounting hole 320 may be a circular hole, so as to ensure a relatively high rotational connection stability between the shutter blade 300 and the shutter body 100 . The driving hole 310 may be a waist-shaped hole, and the driving mechanism may be stably installed in the waist-shaped hole to drive the shutter blade 300 to rotate around the axis of the mounting hole 320 .

The embodiment of the present application provides a shutter structure, which includes a shutter body 100 , a heat equalizing member and a shutter blade 300 . The shutter blade 300 is movably connected to the shutter body 100 , and the heat generated by the operation of the shutter blade 300 can be transferred to the shutter body 100 . The heat spreader is attached to the surface of the shutter body 100 , and heat at different positions on the shutter body 100 can be diffused through the heat spreader, so that the temperature at each position on the shutter body 100 is basically the same. Therefore, when the temperature is calibrated by the shutter body 100 during the imaging process, the uniformity of the temperature calibration can be improved, thereby improving the imaging quality of the camera.

In an alternative embodiment, the heat spreader includes a first heat spreader 210 . The first heat spreader 210 is attached to the first surface of the shutter body 100 facing the light incident side. For example, the first heat spreader 210 can be fixed on the shutter body 100 by connecting parts such as clips, screws or rivets, and the first heat spreader 210 and the first surface of the shutter body 100 are attached to each other, so that the first heat spreader 210 and the first surface of the shutter body 100 Under the better heat conduction effect of a heat spreader 210 , it is ensured that the temperatures at different positions on the shutter body 100 are basically the same. The first heat spreader 210 may be made of a material with good thermal conductivity such as metal. Parameters such as the thickness and shape of the first heat spreader 210 can be determined according to actual conditions, which are not limited here. The first heat spreader 210 is provided with a first escape hole 211 , the first escape hole 211 penetrates the first heat spreader 210 , and when the first heat spreader 210 and the shutter body 100 are assembled with each other, the first escape hole 211 The light entrance hole 110 is avoided to ensure that light outside the shutter structure can enter the shutter structure through the first avoidance hole 211 and the light entrance hole 110 . The shape of the first avoidance hole 211 may be the same as that of the light entrance hole 110 , or may be different from the shape of the light entrance hole 110 , as long as the first avoidance hole 211 can avoid the light entrance hole 110 .

In the case of using the above embodiment, the attachment area between the first heat spreader 210 and the shutter body 100 is relatively large, so that the first heat spreader 210 can provide better heat spread for the shutter body 100 , It is ensured that the temperature consistency at each position on the shutter body 100 is relatively high. Meanwhile, even though the overall size of the shutter body 100 is small, since the area of the first surface of the shutter body 100 facing the light incident side is relatively large, the assembly difficulty between the first heat spreader 210 and the shutter body 100 is relatively large. Smaller, convenient for the processing and production of the shutter structure.

In an optional embodiment, the heat spreader further includes a second heat spreader 220 . The second heat spreader 220 may be attached to the side of the shutter body 100 away from the first heat spreader 210 . For example, the second heat-spreading sheet 220 and the shutter body 100 can also be fixed to each other by means of clip connection or connecting member connection, so as to ensure a good bonding effect between the second heat-spreading sheet 220 and the shutter body 100 . Therefore, the first heat-spreading sheet 210 and the second heat-spreading sheet 220 work together to provide the shutter body 100 with a heat-spreading effect, thereby further improving the temperature consistency at various positions on the shutter body 100 . The second heat spreader 220 can also be made of a material with relatively good thermal conductivity such as metal. The shape and size of the second heat spreader 220 can also be determined according to the actual situation of the shutter body 100 . During the process of disposing the second heat spreader 220 , the second heat spreader 220 also needs to avoid the light inlet hole 110 . To this end, the second heat spreader 220 is provided with a second avoidance hole 221. When the second heat spreader 220 and the shutter body 100 are assembled with each other, the second avoidance hole 221 avoids the light inlet hole 110 to ensure the shutter structure. The outside light can normally enter into the shutter structure through the light entrance hole 110 .

In an optional embodiment, a side of the shutter body 100 away from the first surface is provided with an installation sink 120 . The depth of the installation sink 120 may be determined according to the actual situation such as the installation position of the shutter blade 300, which is not limited here. As mentioned above, the shutter structure can be applied in a camera, and the camera includes other components besides the shutter structure, such as a lens assembly and a photosensitive chip. In the case where the camera is an infrared camera, the camera may also generally include devices such as infrared detectors, and a part of the devices such as the infrared detectors may extend into the installation sink 120 from the side of the shutter body 100 away from the light incident side, thereby reducing The size of the entire camera in the axial direction of the light inlet hole 110 is reduced, so that the overall size of the camera is relatively smaller, the installation space occupied by the camera is reduced, and its product competitiveness is improved.

When the shutter body 100 is provided with the installation sink 120 , the second heat spreader 220 can be attached to the bottom of the installation sink 120 , and the second heat spreader 220 is disposed adjacent to the light inlet hole 110 at the light entrance hole 110 , thereby greatly improving the temperature uniformity of the vicinity of the light inlet hole 110 in the shutter body 100 . In addition, as described above, the shutter body 100 may include at least two parts, and the shutter blade 300 may be sandwiched between the at least two parts. By installing the second heat spreader 220 on the bottom of the groove where the sink 120 is installed in the shutter body 100 , the second heat spreader 220 can be brought closer to the shutter blade 300 , thereby increasing the heat applied by the second heat spreader 220 to the shutter blade 300 . conduction efficiency and conduction uniformity.

In addition, in order to further improve the temperature uniformity at each position on the shutter body 100, a third heat-spreading sheet, a fourth heat-spreading sheet, etc. may also be attached to positions such as the side of the shutter body 100, and the first heat-spreading film The film 210, the second heat spreader 220, the third heat spreader and the fourth heat spreader are connected to each other to ensure that heat can be transferred between the heat spreaders and further improve the temperature uniformity at each position on the shutter body 100. sex.

In an optional embodiment, the projection of the first heat spreader 210 along the axial direction of the light inlet hole 110 is coincident with the first surface of the shutter body 100 . That is, the first surface is entirely covered with the first heat-spreading sheet 210, and the shape of the first heat-spreading sheet 210 and the first surface are the same. In this case, while ensuring that the installation difficulty of the first heat spreader 210 is relatively small, the coverage area of the first heat spreader 210 on the shutter body 100 can be maximized. For example, the shape of the first heat spreader 210 may be the same as that of the shutter body 100 , and the shape and size of the first escape hole 211 may be the same as the shape and size of the light inlet hole 110 . It should be noted that, in the actual production process, due to factors such as processing errors, there is a slight difference between the projection of the first heat spreader 210 in the axial direction of the light inlet hole 110 and the first surface, which is also described in this application. within the scope of protection. In addition, in order to ensure that the first heat spreader 210 will not block the light inlet hole 110 during the process of assembling the first heat spreader 210 and the shutter body 100 , the size of the first avoidance hole 211 may be slightly larger than that of the light entrance hole 110 . size to further reduce assembly difficulty.

In an optional embodiment, the projection of the second heat-spreading sheet 220 along the axial direction of the light inlet hole 110 may coincide with the groove bottom of the mounting sink 120 . That is to say, the bottom of the mounting sink 120 is entirely covered with the second heat-spreading sheet 220, and the second heat-spreading sheet 220 has the same shape as the bottom of the groove. In this case, while ensuring that the installation difficulty of the second heat spreader 220 is relatively small, the coverage area of the second heat spreader 220 on the shutter body 100 can be maximized. For example, the outer shape of the second heat-spreading sheet 220 can be the same as the outer shape of the groove bottom of the mounting sink 120, and the shape and size of the second avoidance hole 221 can be the same as the shape and size of the light inlet hole 110. It should be noted that, in the actual production process, due to factors such as processing errors, there is a slight difference between the projection of the second heat spreader 220 in the axial direction of the light inlet hole 110 and the groove bottom of the installation sink 120. Also within the scope of protection of the present application. In addition, in order to ensure that the second heat spreader 220 will not block the light inlet hole 110 during the process of assembling the second heat spreader 220 and the shutter body 100 , the size of the second avoidance hole 221 may be slightly larger than that of the light entrance hole 110 . size to further reduce assembly difficulty.

As described above, both the first heat spreader 210 and the second heat spreader 220 may be made of materials with good thermal conductivity such as metal. For example, metal copper or the like may be used to form the first heat spreader 210 and the second heat spreader 220 . In another embodiment of the present application, the first heat-spreading sheet 210 and/or the second heat-spreading sheet 220 are graphite structural parts, that is, the first heat-spreading sheet 210 and/or the second heat-spreading sheet 220 use Made of graphite material. The thermal conductivity of graphite is better than that of metal, which can further improve the temperature consistency at various positions on the shutter body 100 . In an optional embodiment, the first heat spreader 210 and the second heat spreader 220 are both graphite structural members. In this case, the thermal conductivity of the first heat spreader 210 and the second heat spreader 220 are relatively good, which can greatly improve the uniformity of heat distribution on the shutter body 100, improve the uniformity of image calibration, and further improve the Image quality.

The thickness of the first heat spreader 210 and/or the second heat spreader 220 may be about 0.1˜0.2 mm. In an optional embodiment, the thicknesses of the first heat spreader 210 and the second heat spreader 220 may both be about 0.1˜0.2 mm. In this case, it can be ensured that the first heat spreader 210 and the second heat spreader 220 occupy a relatively small installation space on the premise of having strong thermal conductivity, which is beneficial to ensure that both the shutter structure and the camera have relatively high thermal conductivity. Small size, reducing the installation space occupied by the shutter structure and the camera.

As described above, the first heat spreader 210 and/or the second heat spreader 220 may be fixed on the shutter body 100 by means of clipping or connecting with a connector. In another embodiment of the present application, the first heat spreader 210 and/or the second heat spreader 220 may be fixed on the shutter body 100 by adhesive bonding. In an optional embodiment, the first heat spreader 210 and the second heat spreader 220 are both bonded and fixed on the shutter body 100, which can further reduce the distance between the first heat spreader 210 and the second heat spreader 220 and the shutter body. 100 is difficult to assemble, and to a certain extent, the bonding effect between the first heat-spreading sheet 210 and the second heat-spreading sheet 220 and the shutter body 100 can be enhanced, and the shutter body 100 and the first heat-spreading sheet 210 can be further improved. The heat transfer efficiency and heat transfer effect between the second heat spreader 220 and the second heat spreader 220 ensure the temperature consistency at various positions on the shutter body 100 . For example, the first heat-spreading sheet 210 and the second heat-spreading sheet 220 may be bonded and fixed on the shutter body 100 by means of thermally conductive adhesive, or the first heat-spreading sheet 210 and the second heat-spreading sheet 220 may be fixed by double-sided tape They are all glued and fixed on the shutter body 100, which further reduces the assembly difficulty of the shutter structure.

4 and 5 illustrate a shutter structure disclosed in another embodiment of the present application. As shown in FIG. 4 and FIG. 5 , in this embodiment, the shutter body 100 may include a first cover 101 and a second cover 102 , the shutter blade 300 may be sandwiched between the first cover 101 and the second cover 102 , and the shutter The blade 300 can be switched between a state of blocking the light inlet hole 110 and a state of avoiding (or exposing) the light inlet hole 110 under the driving of the driving mechanism. In one embodiment of the present application, one of the first cover 101 and the second cover 102 may be made of a metal material to enhance the overall structural strength of the shutter body 100 . In another embodiment of the present application, the shutter body 100 is a plastic structure as a whole, that is, the first cover 101 and the second cover 102 are made of plastic material. In this case, the insulation performance of the shutter body 100 can be better, and the heat conduction efficiency inside the shutter body 100 can be reduced to a certain extent, so that the heat can be transferred to the heat equalizing member as much as possible. The other parts of the shutter structures shown in FIGS. 4 and 5 are basically the same as the other parts of the shutter structures shown in FIGS. 1 to 3 , and are not repeated here for the sake of brevity.

Based on the shutter structure disclosed in any of the above-mentioned embodiments, an embodiment of the present application further discloses a camera, for example, the camera may be an infrared camera, and the camera includes any of the above-mentioned shutter structures. Cameras can also include other components, such as lens assemblies and photosensitive chips. In the case where the camera is an infrared camera, the camera may also generally include devices such as an infrared detector. Considering the brevity of the text, it will not be introduced one by one here.

The above embodiments of this application mainly describe the differences between the various embodiments. As long as the different optimization features of the various embodiments are not contradictory, they can be combined to form better embodiments. No longer.

The above descriptions are merely examples of the present application, and are not intended to limit the present application. Various modifications and variations of this application are possible for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the scope of the claims of this application.

Claims

A shutter structure comprising:

a shutter body, the shutter body is provided with a light inlet hole;

a heat spreader, the heat spreader is attached to the surface of the shutter body; and

A shutter blade, the shutter blade is movably connected with the shutter body.
The shutter structure according to claim 1, wherein the heat-spreading member comprises a first heat-spreading sheet, the first heat-spreading sheet is provided with a first escape hole, and the first heat-spreading sheet is attached to the first heat-spreading sheet The shutter body faces the first surface on the light incident side, and the first avoidance hole avoids the light entrance hole.
The shutter structure according to claim 2, wherein,

A side of the shutter body away from the first surface is provided with an installation sink,

The heat spreader further includes a second heat spreader, the second heat spreader is provided with a second escape hole, the second heat spreader is attached to the bottom of the installation sink, and the first heat spreader The second avoidance hole avoids the light entrance hole.
The shutter structure according to claim 3, wherein the projection of the first heat spreader along the axial direction of the light inlet hole coincides with the first surface.
The shutter structure according to claim 3 or 4, wherein the projection of the second heat-spreading sheet along the axial direction of the light inlet hole coincides with the groove bottom of the installation sink.
The shutter structure according to any one of claims 3-5, wherein the first heat spreader and/or the second heat spreader are made of graphite material.
The shutter structure according to claim 6, wherein the thickness of the first heat-spreading sheet and/or the second heat-spreading sheet is 0.1-0.2 mm.
The shutter structure according to any one of claims 3-7, wherein the first heat-spreading sheet and/or the second heat-spreading sheet are adhesively fixed to the shutter body.
The shutter structure according to any one of claims 1-8, wherein the shutter body is made of a plastic material.
The shutter structure according to any one of claims 1-9, wherein the shutter blades are made of stainless steel.
A camera, comprising the shutter structure of any one of claims 1-10.
The camera of claim 11, wherein the camera is an infrared camera.