Lens protection device and shooting equipment

Abstract

The utility model provides a lens protection device and shooting equipment. The lens protection device comprises a connecting piece; the optical element is arranged on the connecting piece and is opposite to the lens, a space is defined by the optical element and the lens, the connecting piece is provided with at least one first hole, and the first hole is formed between the space and the environment outside the lens; and the first film is arranged on the connecting piece and covers at least part of the first hole. The first hole formed in the connecting piece is suitable for communicating the space with the environment outside the lens, and the first film at least partially covers the first hole, so that the waterproof and dustproof effects can be achieved. Moreover, when the temperature in the space is changed, the gas in the narrow space is more sensitive to the gas in the environment outside the lens due to the influence of the temperature, so that the scheme can discharge the gas carrying the water vapor through the first film in the pressure relief process, or is beneficial to balance the difference between the internal pressure and the external pressure through pressure relief, thereby improving the pressure relief efficiency. An optical element or a lens is not easy to fog.

Description

TECHNICAL FIELD

[0001] The utility model belongs to lens protection field, especially relate to a lens protection device and photographic equipment. BACKGROUND

[0002] The photographic equipment assembled with the lens protection device forms a space which is basically isolated from the external environment between the lens protection device and the lens. During the use of the photographic equipment, based on the temperature change caused by the operation of the photographic equipment, generally, after the photographic equipment is used for a period of time, the temperature of the photographic equipment is higher than that of the external environment, which easily causes the water vapor in the space to condense on the surface of the lens protection device and / or the surface of the lens, and further causes the imaging effect to be not clear enough, or causes the user's use to be inconvenient. SUMMARY

[0003] To solve the above and other aspects of at least one technical problem in the prior art, the utility model provides a lens protection device and photographic equipment, through the first hole on the connecting piece and the first film covering at least the first hole, dust and moisture can be prevented from entering the space, and at least part of the air and the water vapor carried in the space can be discharged. In addition, since the lens protection device and the main body of the photographic equipment or the lens can be disassembled, when the lens protection device is repeatedly installed on the main body of the photographic equipment or the lens, the sealing environment between the lens and the lens protection device is easily damaged, and / or more water vapor is brought, which easily causes fogging, and further affects the shooting quality or causes the user's use to be inconvenient.

[0004] The first aspect of the utility model provides a lens protection device for protecting the lens of a photographic equipment, comprising: a connecting piece; an optical element arranged on the connecting piece and arranged opposite to the lens, the optical element and the lens surrounding a space, the connecting piece being provided with at least one first hole, the first hole being arranged between the space and the environment outside the lens; and a first film arranged on the connecting piece and covering at least part of the first hole.

[0005] The second aspect of the utility model provides a lens protection device for protecting the lens of a photographic equipment, comprising: a connecting piece; an optical element arranged on the connecting piece and arranged opposite to the lens, the optical element and the lens surrounding a space; the distance of the space along the height direction of the connecting piece being smaller than the distance of the space along the width direction of the connecting piece; and the air pressure in the space being configured to be balanced with the air pressure of the environment outside the lens, and light rays passing through the optical element, the space and the lens in sequence to realize shooting.

[0006] A third aspect of this invention provides a shooting device, comprising: a main body; a lens disposed on the main body; and a lens protection device configured to enclose at least a portion of the lens.

[0007] A fourth aspect of this utility model provides a shooting device, comprising: a main body having a connecting structure, the connecting structure being detachably connected to a lens protection device; and a lens disposed on the main body, the lens protection device comprising an optical element, the optical element and the lens surrounding to form a space, and the lens protection device having a first hole disposed between the space and the environment outside the lens.

[0008] The fifth aspect of this utility model provides a shooting device, comprising: a main body having a connecting structure, the connecting structure being detachably connected to a lens protection device; and a lens disposed on the main body, the lens protection device including an optical element, the optical element and the lens surrounding to form a space; the main body having a first hole, the first hole being disposed between the space and the environment outside the lens.

[0009] As shown in the illustrative embodiment of this utility model, the connector is suitable for mounting optical elements onto an external lens, forming a space between the optical element and the lens. A first hole on the connector connects this space to the environment outside the lens, and a first membrane at least partially covers this first hole, providing waterproofing and dustproofing. Furthermore, when the temperature within this space changes, the gas within the confined space is more sensitive to temperature changes than the gas in the environment outside the lens. Therefore, this solution enables the gas carrying water vapor to be discharged through the first membrane during depressurization, or helps to equalize or balance the internal and external pressure differences through depressurization, making the optical element or lens less prone to fogging. Attached Figure Description

[0010] Figure 1 This is an exploded view of the components of a lens protection device according to an illustrative embodiment of the present invention;

[0011] Figure 2 yes Figure 1 A partial cross-sectional view of the lens protection device of the illustrative embodiment shown;

[0012] Figure 3 yes Figure 1 A model analysis diagram illustrating the pressure difference between the space of the lens protection device and the environment outside the lens in the schematic embodiment shown.

[0013] Figure 4 yes Figure 1 A schematic diagram of the optical elements of the lens protection device of the illustrative embodiment shown, illustrating two light-transmitting bodies;

[0014] Figure 5 This is a partial cross-sectional view of a lens protection device according to another illustrative embodiment;

[0015] Figure 6 yes Figure 1 A partial enlarged view of the first film of the lens protection device of the illustrative embodiment shown also shows the second film;

[0016] Figure 7 This is a perspective view of a photographing device according to an illustrative embodiment of the present invention;

[0017] Figure 8 This is a partial cross-sectional view of a shooting device according to an illustrative embodiment of the present invention, showing the connection structure;

[0018] Figure 9 This is a perspective view of a photographing device according to another illustrative embodiment of the present invention;

[0019] Figure 10 yes Figure 9 A partial cross-sectional view of the imaging device of the illustrative embodiment shown, illustrating the first hole;

[0020] Figure 11 yes Figure 9 A partial enlarged view of the first film of the lens protection device of the illustrative embodiment shown also shows the second film;

[0021] Figure 12 yes Figure 9 A partial cross-sectional view of the imaging device of the illustrative embodiment shown illustrates the third membrane.

[0022] In the accompanying drawings, the meanings of the reference numerals are as follows:

[0023] 1. Lens protection device; 11. Optical element; 111. First light-transmitting body; 112. Second light-transmitting body; 113. Heat insulation layer; 12. Connector; 121. First part; 1211. Recessed part; 122. Second part; 123. First hole; 1231. Smaller hole; 1232. Larger hole; 1233. First end; 1234. Second end; 124. Membrane structure; 1241. Connecting part; 1242. First membrane; 1243. Second membrane; 1244. Third membrane; 125. Space; 126. Heating part; 13. Adhesive; 14. Sealing element;

[0024] 2, main body; 21, housing; 22, imaging device; 23, connecting structure; 24, first hole; 241, smaller hole; 242, larger hole; 243, first end; 244, second end; 25, membrane structure; 251, connecting portion; 252, first membrane; 253, second membrane; 254, third membrane; 26, space; 27, heating portion;

[0025] 3, environment outside the lens;

[0026] 4, lens. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below with reference to the embodiments and the accompanying drawings.

[0028] The terms used herein are merely used to describe specific embodiments, and are not intended to limit the present application. The terms "include", "contain" and the like used herein indicate the existence of the described features, steps, operations and / or components, but do not exclude the existence or addition of one or more other features, steps, operations or components.

[0029] All terms used herein, including technical and scientific terms, have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted to have meanings consistent with the context of the present specification, and should not be interpreted in an idealized or overly formal manner.

[0030] In the event that a phrase similar to "at least one of A, B, and C, etc." is used herein, it is generally intended that the inclusion of at least one of A, B, or C should be treated as an inclusion of each and every combination of A, B, and C (e.g., the inclusion of at least one option of A, B, and C should be treated as an inclusion of A alone, B alone, C alone, A and B together, A and C together, B and C together, or A, B, and C together). If there is an intent to exclude at least one of A, B, and C and contrariwise, the term "one or more of A, B, and C" will be used instead. In the event that a phrase similar to "at least one of A, B, or C, etc." is used herein, it is generally intended that the inclusion of at least one of A, B, or C should be treated as an inclusion of each and every combination of A, B, and C (e.g., the inclusion of at least one option of A, B, and C should be treated as an inclusion of A alone, B alone, C alone, A and B together, A and C together, B and C together, or A, B, and C together). If there is an intent to exclude at least one of A, B, and C and contrariwise, the term "one or more of A, B, and C" will be used instead. The lens is suitable for converging light from a shooting target to an imaging device in a shooting device. During use of the shooting device, the lens exposed to the shooting device is prone to damage such as wear, dust and water vapor invasion, etc. The lens has scratches, dirty spots, fog caused by the gas generated by the lens itself when heated and meeting the cold glass corresponding to the dew point, etc. which affect the imaging effect of the shooting device. Therefore, a lens protection device can be provided on the lens or the shooting device to surround the front end of the lens or the lens without affecting the light collection effect of the lens, thereby effectively preventing damage to the lens.

[0031] The shooting device equipped with the lens protection device forms a space between the lens protection device and the lens which is substantially isolated from the external environment. During use of the shooting device, based on the temperature change caused by the operation of the shooting device, the temperature of the shooting device is usually higher than that of the external environment after the shooting device is used for a period of time. Thus, the water vapor located in the space is prone to condense on the surface of the lens protection device and / or the surface of the lens, thereby causing the imaging effect to be not clear enough or causing inconvenience to the user.

[0032] The lens protection device is suitable for being assembled on the shooting device to at least isolate the front end of the lens from the environment outside the lens, thereby protecting the lens. The shooting device equipped with the lens protection device forms a space between the lens protection device and the lens.

[0033] During use of the shooting device, based on the temperature change caused by the operation of the shooting device (such as the temperature change caused by the heat generated by the operation of the imaging device), and the temperature difference between the environment outside the lens, the water vapor located in the space is prone to condense on the surface of the lens protection device and / or the surface of the lens, thereby causing the imaging effect to be not good (such as the image not clear enough).

[0034] In view of the above, in some lens protection devices, a through hole is arranged to connect the space with the environment outside the lens, so as to reduce the pressure difference between the space and the environment outside the lens, thereby reducing the occurrence of condensation. However, in actual use, the open through hole increases the opportunity of liquid, gas and dust entering the space, and therefore the waterproof and dustproof effect of this method is limited. In some other lens protection devices, auxiliary heating mechanisms are also configured to reduce the condensation of water vapor by increasing the temperature in the space. On this basis, the lens protection devices are also configured with valve structures that can be opened and closed in response to the operating state of the auxiliary heating mechanisms, so as to conduct the valve structures to discharge part of the gas in the space when the space is at a high temperature. However, in actual use, such devices not only have a complex structure, but also have poor active adjustment capability, and high temperature may also cause damage to the lens.

[0035] Therefore, how to provide a lens protection device with reasonable structure, which can effectively prevent dust and water, reduce the probability of fogging of the optical element or lens, and actively discharge part of the water vapor to the environment outside the lens, has become a technical problem to be solved.

[0036] The shaking compensation device and the photographing equipment of the present application will be described in detail below with reference to the drawings. In the case of no conflict, the features in the following embodiments and modes can be combined with each other.

[0037] Referring to FIGS. 1 to 4, Figure 1 and Figure 2 An embodiment of the present application provides a lens protection device for protecting a lens of a photographing equipment, which comprises a connecting member 12, an optical element 11 and a first film 1242. The optical element 11 is arranged on the connecting member 12 and is arranged opposite to the lens, and the optical element 11 and the lens enclose a space 125. The connecting member 12 is provided with at least one first hole 123, which is arranged between the space 125 and the environment outside the lens. The air pressure in the space 125 is configured to be balanced with the air pressure of the environment 3 outside the lens, and light passes through the optical element 11 and the lens 4 in sequence to realize photographing. The first film 1242 is arranged on the connecting member 12 and covers at least part of the first hole 123.

[0038] In such an embodiment, the connecting member 12 is suitable for being assembled on the main body or the lens of the photographing equipment, and is at least covered on the front end of the lens (or even covered on the whole lens) to achieve the purpose of protecting the lens.

[0039] The optical element includes at least one of the following: filters, such as absorption filters that filter light by absorbing specific wavelengths, interference filters that select specific wavelengths of light by interference effects, wave plates, such as quarter-wave plates and half-wave plates, lenses, such as convex lenses that converge light rays, concave lenses that diverge light rays, mirrors, plane mirrors that reflect light rays without changing the divergence of the light beam, curved mirrors, convex mirrors that diverge light rays, often used in wide-angle rearview mirrors, concave mirrors that converge light rays, similar to the effect of convex lenses, prisms, triangular prisms that are used for dispersion of light or changing the direction of propagation of light, pentagonal prisms, and right-angle prisms that are used for turning the direction of light. For ease of understanding, the embodiments of the utility model take plane mirrors as examples.

[0040] In view of the above-mentioned deficiencies, modeling analysis is made with reference to Figure 3 The T0 represents the ambient temperature when the lens protection device is installed / (K); the p0 represents the relative humidity when the lens protection device is installed / (%RH); the T1 represents the temperature of the space 125 / (K), wherein the space 125 includes the area surrounded by the optical element 11 and the lens 4, or the area surrounded by the optical element 11, the connecting piece 12 and the lens 4; the T2 represents the temperature of the optical element / (K); the T3 represents the ambient temperature outside the lens / (K); the T4 represents the inner surface temperature of the optical element / (K); and the t1 represents the thickness of the optical element.

[0041] In the state that the lens protection device is assembled on the lens or the main body of the shooting device, the optical element 11 and the lens form a space 125 that is approximately isolated from the environment 3 outside the lens. The relationship between the states of the ideal gas in the space 125 is described according to the ideal gas state equation PV=nRT. The physical quantities represented by each symbol in the formula are as follows:

[0042] P is the pressure of the gas, commonly used units are pascal (Pa) or standard atmosphere (atm).

[0043] V is the volume of the gas, commonly used units are cubic meters (m 3 ) or liters (L), which is equivalent to the volume of the gas in the space 125.

[0044] n is the amount of substance of the gas, the unit is mole (mol).

[0045] R is the ideal gas constant, which is approximately 8.314 J / (mol·K).

[0046] T is the absolute temperature of the gas, in Kelvin (K).

[0047] Therefore, under the analysis model of the embodiment, the temperature of the gas in the space 125 is positively correlated with the gas pressure, the higher the temperature of the gas in the space 125, the greater the gas pressure in the space 125, and the greater the pressure difference with the environment outside the lens, which further affects the dew point temperature of the optical element 11 or the lens, thereby more easily causing fogging.

[0048] In the use scenario where the lens protection device and the shooting device are detachable, this problem is more obvious, because it is impossible to block the external water vapor around the lens 4 when disassembled, and discharge these water vapor when assembled, so that when the gas pressure in the space 125 is high, the water vapor will condense on the optical element 11 or the lens 4 to form fog, that is, the problem of fogging occurs.

[0049] Therefore, in the scenario where the user is in an environment with a sharp change in external environment temperature, such as entering a ski field, subway, etc. from a higher temperature to a lower temperature environment, the optical element 11 or the lens 4 is more likely to cause fogging problems, which further leads to the user's imaging effect not being clear enough, or leads to the user's inconvenience, because the user needs to clean the fog before shooting again.

[0050] In some embodiments of the present application, the first hole 123 provided on the connecting piece 12 connects the space 125 with the environment 3 outside the lens, thereby realizing that the gas pressure in the space 125 and the environment 3 outside the lens is approximately equal or balanced, and further reducing the dew point of the optical element, so that the dew point is maintained far below room temperature, for example, 5 degrees Celsius or minus Celsius, so that the optical element or the lens of the lens protection device is not prone to fogging. And the first film 1242 at least partially covers the first hole 123 to prevent liquid and dust from entering the space 125 through the first hole, thereby playing a dustproof and waterproof role.

[0051] Since the space 125 can be regarded as a relatively closed space with certain heat insulation effect only communicating with the environment 3 outside the lens through the first hole 123 (without considering the sealing problem between the connecting member 12 and the lens), when temperature change occurs in the space 125 (which can be caused by heat generated during use of the shooting device, or caused by changes in the use scene of the shooting device, or the superposition of the two), the gas in the space 125 is more sensitive to temperature changes than the gas in the external space 125, so that the air pressure in the space 125 is higher than the air pressure in the environment 3 outside the lens, and then the pressure in the environment 3 outside the lens is released through the first hole 123 (for example, the space 125 at 0℃, the amount of pressure released is 6 times that due to temperature rise; the space 125 at 25℃, the amount of pressure released is 11 times that due to temperature rise), so that part of the gas (such as air) and the water vapor carried in the space 125 are discharged from the first film 1242 to the environment 3 outside the lens, until the air pressure on both sides of the first film 1242 is roughly the same, thereby preventing the fogging phenomenon caused by the condensation of water vapor on the surface of the optical element 11 and / or the lens.

[0052] According to the embodiments of the present application, as shown in Figure 4 The optical element 11 includes at least one light-transmitting body. The thickness (i.e., t1 as shown in Figure 4 The thickness of each light-transmitting body ranges from 1.0 mm to 3.0 mm.

[0053] In some illustrative embodiments, the thickness of each light-transmitting body includes, but is not limited to, any value configured to be 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2.0 mm, 2.1 mm, 2.2 mm, 2.3 mm, 2.4 mm, 2.5 mm, 2.6 mm, 2.7 mm, 2.8 mm, 2.9 mm, and 3.0 mm. It should be understood that embodiments of the present application are not limited thereto.

[0054] Specifically, it is appropriate to meet the required heat preservation, structural strength, optical requirements and other design requirements of the optical element.

[0055] In some illustrative embodiments, the optical element 11 is adapted to shield and protect the lens. In detail, the optical element 11 includes, but is not limited to, a planar mirror. Further, the optical element 11 includes, but is not limited to, any one of optical glass, plastic (such as polycarbonate, acrylic polymer, polymethyl methacrylate, etc.), crystal, and other optical materials suitable for manufacturing optical elements. In this way, the optical element disposed in front of the lens has certain anti-impact and anti-shock performance, which can prevent the lens from being damaged due to the falling and / or impact of the shooting device. It should be understood that the embodiments of the present application are not limited thereto.

[0056] In addition to the protection function, the optical element 11 can also use other lenses with certain optical effects, for example, the optical element 11 includes, but is not limited to, any one of a spherical mirror, an aspherical mirror, a convex optical element, a concave optical element, a coated lens (such as a UV lens), and other lenses with optical effects.

[0057] According to the embodiments of the present application, as shown in Figure 4 , the optical element 11 includes at least two light-transmitting bodies, and the at least two light-transmitting bodies are spaced apart. Among them, the adjacent light-transmitting bodies have a heat insulation layer therebetween.

[0058] In some illustrative embodiments, the optical element 11 includes a first light-transmitting body 111 and a second light-transmitting body 112 arranged in layers. In detail, the two light-transmitting bodies (i.e., the first light-transmitting body 111 and the second light-transmitting body 112) are spaced apart and substantially parallel to each other and arranged on the connecting member 12. Further, the cavity formed between the two light-transmitting bodies can form a heat insulation layer 113 by extracting vacuum or filling a heat-insulating medium (such as inert gas), so as to reduce the heat exchange between the external environment and the space 125, thereby preventing the lens 4 or the inner surface of the optical element 11 from fogging due to rapid temperature changes.

[0059] According to the embodiments of the present application, as shown in Figure 1 and Figure 2 , the connecting member 12 includes a first part 121 and a second part 122. The optical element 11 is arranged on the first part 121. The second part 122 is connected with the first part 121 and is adapted to be assembled with the lens, so as to detachably connect the connecting member 12 to the lens.

[0060] Referring to Figure 2 , in some illustrative embodiments, among the faces facing each other of the first part 121 and the second part 122 (such as the inner end face of the first part and the outer end face of the second part as shown in Figure 2 ), one is provided with a recess, and the other is provided with a protrusion matched with the recess, so as to embed and connect the first part 121 and the second part 122. Further, the second part 122 is provided with a supporting face (such as the outer end face of the second part as shown in Figure 2The upper surface (as shown) supports the optical element 11, while the first part 121 covers the outer edge of the optical element 11 and connects it to the second part 122, so that the lens protection device forms an integral structure (that is, under the action of no external force, the optical element 11, the first part 121 and the second part 122 can remain connected to each other for transfer or assembly onto other devices). The optical element 11 is, but is not limited to, being bonded to the supporting surface of the second part 122 by adhesive or double-sided adhesive. It should be understood that the embodiments of this utility model are not limited to this.

[0061] For example, the first part 121 and the second part 122 can be formed from the same material in one piece.

[0062] In this implementation, the first part 121 and the second part 122 adopt a separate structure, which is simpler in terms of process and has a correspondingly lower processing cost than the one-piece molding method. Furthermore, the first part 121 and the second part 122 can be adapted to different design purposes (which will be described in detail in later embodiments).

[0063] Reference Figure 2 As shown, in some illustrative embodiments, the end of the second part 122 that is opposite to the first part 121 (e.g.) Figure 2 The lower end shown forms a connecting end. In detail, this connecting end is configured to engage with another connecting end (not shown) provided on the front port of the lens or the body of the shooting device.

[0064] For example, the connecting end provided in the second part 122 and the other connecting end can be connected by a threaded connection, a bayonet connection, a blade-type connection, or any other connection method suitable for connecting the lens protection device to the shooting equipment.

[0065] Furthermore, the second part 122 forms a joint end with a joint surface facing the lens (such as...). Figure 2 The lower surface shown is also provided with a sealing element 14. Specifically, the sealing element 14 is, but is not limited to, bonded to the mating surface by an adhesive element 13 (such as double-sided tape or adhesive provided in an adhesive groove), and when the connector 12 is assembled in the shooting device, it tightly presses against the surface of the lens to form a seal between the connector 12 and the lens. This improves the sealing performance at the connection point between the connector 12 and the lens, further enhancing the waterproof and dustproof effect.

[0066] According to embodiments of the present invention, such as Figure 1 and Figure 2 As shown, the first part 121 is made of a first material, and the second part 122 is made of a second material. The thermal conductivity of the first material is less than that of the second material.

[0067] In some illustrative embodiments, the second part 122 comprises but is not limited to a metal material, so as to be connected with the main body of the lens or the shooting device and / or form a contact with the lens aperture. Further, the first part 121 comprises but is not limited to at least one of a thermoplastic material, a thermosetting material and a rubber (e.g., two or more materials can be used, and a multi-color injection molding method can be used to manufacture the first part 121), which is encapsulated outside the second part 122.

[0068] In such an embodiment, the first part 121 made of a material with a small thermal conductivity is located outside the second part 122 to surround at least a portion of the second part 122 (e.g., the upper end shown in the drawings), and the first part 121 exposed to the outside can be held by a user to isolate the heat of the second part 122 from the outside, thereby preventing the user from being scalded. In addition, the encapsulated first part 121 has more abundant texture and color selection than the second part 122 made of a metal material, thereby facilitating the improvement of the appearance of the product. Figure 2

[0069] Referring to Figure 2 According to an embodiment of the present application, the first hole 123 is arranged on at least one of the first part 121 and the second part 122.

[0070] According to an embodiment of the present application, as shown in Figure 2 The first hole 123 is arranged in the height direction of the connecting member 12 (e.g., the x direction shown in the drawings), for example, the first hole 123 penetrates the first part 121 and / or the second part 122 in the height direction of the connecting member 12. Figure 2

[0071] According to an embodiment of the present application, as shown in Figure 1 and Figure 2 The first part 121 is configured as a substantially annular structure, and the inner edge of the first part 121 forms a recessed portion 1211. The first hole 123 is formed on the second part 122, and in the orthographic projection along the optical axis of the lens, the projection of the first hole 123 coincides with the projection of the recessed portion 1211.

[0072] In some illustrative embodiments, as shown in Figure 1 and Figure 2 The first part 121 is configured as an approximately annular structure with an inner circle and an outer square. In detail, the inner diameter of the circular hole formed by the inner edge is substantially the same as the outer diameter of the lens to be fitted, so as to be closely covered outside the lens in the fitted state.

[0073] In some illustrative embodiments, as shown in Figure 1 and Figure 2 The side of the second part 122 facing the first part 121 forms a stepped structure, and the optical element 11 is fitted in the first stepped structure (e.g., the stepped structure shown in the drawings).​​Figure 3 The uppermost step structure) and is supported on the support surface. Further, the height difference (as Figure 2 The x direction) and the first hole 123 penetrates the step structure to connect the space 125 defined below the optical element 11 with the environment outside the lens.

[0074] According to the embodiments of the present application, with reference to Figure 2 The first film 1242 is arranged in the first hole 123.

[0075] In some illustrative embodiments, as Figure 1 And Figure 2 The end of the first hole 123 outside the space 125 (as Figure 2 The lower end) forms an annular groove recessed in the second part 122. In detail, the film structure 124 with the first film 1242 is arranged in the groove. Further, the film structure 124 also includes an annular connecting part 1241 located outside the first film 1242 to connect the first film 1242 to the second part 122 and make the first film 1242 face the first hole 123. Further, the diameter of the first film 1242 is configured to be less than or equal to the aperture of the first hole 123 (for example, a circular hole, if the first hole 123 is a non-circular hole, the cross-sectional area of the first film 1242 is less than or equal to the cross-sectional area of the non-circular hole). Wherein, the connecting part 1241 includes but is not limited to a double-sided tape in the form of an annular ring to bond the first film 1242 in the first hole 123.

[0076] In an illustrative embodiment, the diameter of the first hole 123 includes but is not limited to being configured to be 4 to 5 mm. Such as 4 mm, 4.1 mm, 4.2 mm, 4.3 mm, 4.4 mm, 4.5 mm, 4.6 mm, 4.7 mm, 4.8 mm, 4.9 mm and 5 mm. Further, the diameter of the first film 1242 includes but is not limited to being configured to be 1 to 2 mm. Such as 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm and 2 mm. It should be understood that the embodiments of the present application are not limited thereto.

[0077] For example, the diameter of the first hole 123 can also be configured to be 2 mm, 3 mm, 6 mm or any other value. Correspondingly, the diameter of the first film 1242 can also be configured to be 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 3 mm, 4 mm or any other value.

[0078] In such an embodiment, the first film 1242 is arranged in the first hole 123, so that the first film 1242 is hidden in the second part 122. In this way, not only the first film 1242 and the connecting member 12 have better integrity as a whole, so that they are more beautiful, but also the first film 1242 can be more effectively prevented from falling off due to frequent contact with the outside during use.

[0079] According to an embodiment of the present application, as shown in Figure 2 In the orthographic projection along the optical axis direction of the lens, the projection of the first hole 123 is close to the edge of the projection of the first part 121. The shortest distance between the edge of the first hole 123 and the edge of the first part 121 is 0.1 mm to 5 mm.

[0080] In some exemplary embodiments, as shown in Figure 2 The edge of the first hole 123 is configured to have a shortest distance of 0.1 mm to 5 mm from the edge of the first part 121 (which can be regarded as the connecting member 12), i.e. 0.1 mm≤d1≤5 mm. Further, the edge of the first hole 123 is also configured to have a shortest distance of 20 mm to 50 mm from the optical axis of the lens (which can be regarded as the center line of the lens protection device), i.e. 20 mm≤d2≤50 mm.

[0081] In an exemplary embodiment, the shortest distance between the edge of the first hole 123 and the edge of the first part 121 includes but is not limited to any one of 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2.0 mm, 2.1 mm, 2.2 mm, 2.3 mm, 2.4 mm, 2.5 mm, 2.6 mm, 2.7 mm, 2.8 mm, 2.9 mm, 3.0 mm, 3.1 mm, 3.2 mm, 3.3 mm, 3.4 mm, 3.5 mm, 3.6 mm, 3.7 mm, 3.8 mm, 3.9 mm, 4.0 mm, 4.1 mm, 4.2 mm, 4.3 mm, 4.4 mm, 4.5 mm, 4.6 mm, 4.7 mm, 4.8 mm, 4.9 mm and 5.0 mm.

[0082] In one illustrative embodiment, the edge of the first aperture 123 is further configured such that the shortest distance from the optical axis of the lens is, but is not limited to, any one of 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, 26 mm, 27 mm, 28 mm, 29 mm, 30 mm, 31 mm, 32 mm, 33 mm, 34 mm, 35 mm, 36 mm, 37 mm, 38 mm, 39 mm, 40 mm, 41 mm, 42 mm, 43 mm, 44 mm, 45 mm, 46 mm, 47 mm, 48 mm, 49 mm, and 50 mm. It should be understood that embodiments of the present invention are not limited thereto.

[0083] The shortest distance between the edge of the first hole and the edge of the first part (i.e., the connector) and / or the shortest distance between the edge of the first hole and the optical axis of the lens should be adapted to the actual size of the shooting equipment and the lens configured for the shooting equipment, so as to meet the overall design requirements.

[0084] In some illustrative embodiments, a plurality of first holes 123 may be provided on the connector 12. For ease of representation, they are referred to as second holes. In detail, at least one first hole 123 and at least one second hole are provided at intervals on the connector 12.

[0085] For example, at least a portion of the first hole 123 and at least a portion of the second hole may be symmetrically arranged with respect to the center line of the connector 12 (which may also be considered the optical axis of the lens). Specifically, this may be axially symmetrical and / or centrally symmetrical.

[0086] Reference Figure 5 As shown, according to an embodiment of the present invention, the first hole 123 is along the width direction of the connector 12 (e.g., Figure 5 The first hole 123 is set along the width direction of the connector 12 (as shown in the y-direction). Specifically, the first hole 123 is set along the width direction of the connector 12 (e.g., in the y-direction). Figure 5 (As shown in the y-direction) it penetrates the wall of the first part 121 or the second part 122.

[0087] In some illustrative embodiments, such as Figure 3 As shown, a through hole 123 is provided on the wall of the first part 121, and a through hole 123 is also provided on the wall of the second part 122. Specifically, the first holes 123 formed by the first part 121 and the second part 122 are connected end-to-end, so that the space 125 below the optical element 11 is connected to the environment outside the lens. Furthermore, a first film 1242 (or a film structure 124 including the first film 1242) can also be disposed within the first hole 123, in a manner similar to the above-described embodiment, and will not be repeated here. It should be understood that the embodiments of this utility model are not limited thereto.

[0088] In other illustrative embodiments, such asFigure 5 As shown, the first membrane 1242 can also be disposed at the first end 1233 of the first hole 123.

[0089] In some illustrative embodiments, such as Figure 5 As shown, the diameter of the first membrane 1242 is configured to be greater than or equal to the diameter of the first hole 123 (taking a circular hole as an example). Furthermore, the first membrane 1242 is disposed outside the first hole 123, and one end of the first hole 123 (see reference) Figure 3 The left end of the first hole 123 shown is completely covered.

[0090] In this embodiment, compared to the method of placing the first membrane 1242 inside the first hole 123, the assembly accuracy requirement is lower and the installation is easier.

[0091] According to embodiments of the present invention, such as Figure 5 As shown, the lens protection device also includes a heating element 126. The heating element 126 is disposed on the connector 12 and configured as a heating space 125.

[0092] In some illustrative embodiments, such as Figure 5 As shown, the heating element 126 includes, but is not limited to, the use of heating wires and / or heating plates. Specifically, the heating element 126 is, but is not limited to, mounted on the connector 12 and connected to an external circuit, which can be an external power supply or integrated into the circuitry of the imaging device. Furthermore, the heating power of the heating element 126 can be configured to be adjustable (e.g., adjusting the current or the number of heating wires) to more precisely regulate the temperature of the optical element 11, thereby more quickly regulating the gas pressure within the space 125 and the ambient air pressure outside the lens.

[0093] Reference Figure 6 As shown, the lens protection device also includes at least one second film 1243. The second film 1243 is stacked on top of the first film 1242.

[0094] In some illustrative embodiments, the membrane structure 124 includes a first membrane 1242, a second membrane 1243, and an annular connecting portion 1241. Specifically, the connecting portion 1241 is located between the first membrane 1242 and the second membrane 1243 to connect the stacked first membrane 1242 and the second membrane 1243. In some embodiments, a gap may be formed between the first membrane 1242 and the second membrane 1243. The number of layers of the second membrane 1243 includes, but is not limited to, any number configured as 1, 2, 3, 4, 5, or more layers, preferably to meet corresponding design requirements.

[0095] In such an embodiment, the gap formed by the first film 1242 and the second film 1243 forms a transition cavity, thereby avoiding the gas pressure in the environment outside the lens being greater than the gas pressure in the space 125 (for example, in a scenario where the photographic device is moved from a low-temperature environment to a high-temperature environment for shooting soon after shooting in the low-temperature environment), resulting in gas backflow. Once the gas backflow occurs, the gap between the first film 1242 and the second film 1243 has a pressure stabilizing and buffering effect, so that the gas entering from the outside is only located in the transition cavity, and will not continue to enter the space 125 defined by the lens protection device through the first film 1242.

[0096] According to an embodiment of the present application, as shown in Figure 5 The lens protection device further includes a third film 1244. The third film 1244 is arranged at the second end 1234 of the first hole 123, and the second end 1234 and the first end 1233 are located at two ends of the first hole 123.

[0097] Similar to the above embodiment, in addition to stacking at least one second film 1243 on the first film 1242, a third film 1244 (as shown in Figure 5 ) can also be arranged at the two ends of the first hole 123 away from each other to form a transition cavity (which can be considered as the entire region in the first hole 123) in the first hole 123. It should be understood that the embodiments of the present application are not limited thereto.

[0098] For example, the second film 1243 is stacked on the first film 1242, and the first film 1242 and the third film 1244 are arranged at the two ends of the first hole 123, and are used at the same time.

[0099] In some illustrative embodiments, at least one of the first film 1242, the second film 1243, and the third film 1244 is a waterproof and breathable film. In detail, it includes but is not limited to polypropylene film, polyethylene film, polyvinyl chloride film, polyurethane film, and other materials with porous structure.

[0100] In such an embodiment, the first film, the second film, and the third film 1244 arranged in the first hole 123 are made of a film that prevents liquid droplets and allows water vapor to pass through. In this way, liquid can be effectively prevented from entering the space 125 through the first hole 123, and the gas and the water vapor carried in the space 125 can be effectively discharged outward under the action of the pressure difference, ultimately achieving the pressure balance between the space 125 and the environment outside the lens, so that the optical element or the lens is less likely to fog.

[0101] According to an embodiment of the present application, referring to Figure 3As shown, the first hole 123 is a stepped hole, the diameter of the larger hole 1232 ranges from 1.0 mm to 6.0 mm, and the diameter of the smaller hole 1231 ranges from 0.5 mm to 2.0 mm. The larger hole 1232 and the smaller hole 1231 form a stepped hole, and the diameter of the larger hole 1232 is larger than the diameter of the smaller hole 1231.

[0102] In some illustrative embodiments, such as Figure 3 As shown, the aperture of the smaller aperture 1231 includes, but is not limited to, being configured as 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, and 2.0 mm. The diameter of the larger aperture 1232 includes, but is not limited to, being configured as 1.0 mm, 1.5 mm, 2.0 mm, 2.5 mm, 3.0 mm, 3.5 mm, 4.0 mm, 4.5 mm, 5.0 mm, 5.5 mm, and 6.0 mm. Wherein, when the aperture of the larger aperture 1232 is configured as 1.0 mm to 2.0 mm, the aperture of the smaller aperture 1231 must be smaller than the aperture of the larger aperture 1232. It should be understood that the embodiments of this utility model are not limited thereto.

[0103] For example, the aperture of the smaller aperture 1231 can be configured to any value that is less than 0.5 mm or greater than 2.0 mm.

[0104] For example, the aperture of the larger aperture 1232 can be configured to be less than 1.0 mm and greater than any value of the aperture of the smaller aperture 1231.

[0105] For example, the first hole 123 can have two or more stepped structures.

[0106] Reference Figure 1 and Figure 2 As shown, one embodiment of this utility model provides another lens protection device for protecting the lens of a shooting device, including a connector 12 and an optical element 11, which are disposed on the connector 12 and opposite to the lens 4. The optical element 11 and the lens 4 surround each other to form a space 125.

[0107] Space 125 along the height direction of connector 12 (e.g.) Figure 2 The distance (in the x-direction shown) is less than the distance along the width direction of the connector 125 of the space 125 (e.g., in the x-direction shown). Figure 2 The distance (in the y direction shown); the air pressure inside the space 125 is configured to be balanced with the air pressure of the environment 3 outside the lens, and the light passes through the optical element 11, the space 125 and the lens 4 in sequence to achieve shooting.

[0108] Therefore, space 125 will have a roughly flat structure.

[0109] In such an embodiment, the connecting member 12 is adapted to be assembled on the main body 2 or the lens 4 of the photographing device, and covers at least the front end of the lens (or even the whole lens) to achieve the purpose of protecting the lens.

[0110] In some embodiments of the present application, the first hole 123 provided on the connecting member 12 connects the space 125 with the environment 3 outside the lens, so that the pressure in the space 125 and the environment 3 outside the lens is substantially equal or balanced, thereby reducing the dew point of the optical element, and maintaining the dew point at a temperature far below room temperature, for example, 5 degrees Celsius or minus degrees Celsius, so that the optical element or the lens of the lens protection device is less likely to fog. The first film 1242 at least partially covers the first hole 123 to prevent liquid and dust from entering the space 125 through the first hole, thereby achieving the effects of dustproof and waterproof.

[0111] Since the space 125 can be regarded as a relatively closed space 125 with certain heat insulation effect only connected with the environment 3 outside the lens through the first hole 123 (without considering the sealing problem between the connecting member 12 and the lens), when the temperature in the space 125 changes (which can be caused by the heat generated during use of the photographing device, or caused by changes in the use scene of the photographing device, or a combination of the two), the gas in the space 125 is more sensitive to temperature changes than the gas in the outer space 125, so that the pressure in the space 125 is higher than the pressure in the environment 3 outside the lens, and then the pressure in the space 125 is released to the environment 3 outside the lens through the first hole 123 (for example, the amount of pressure released by the space 125 at 0℃ is 6 times the amount of pressure released due to temperature rise; the amount of pressure released by the space 125 at 25℃ is 11 times the amount of pressure released due to temperature rise), so that part of the gas (such as air) and the water vapor carried in the space 125 are discharged to the environment 3 outside the lens through the first film 1242, until the pressure on both sides of the first film 1242 is substantially the same, thereby preventing the fogging phenomenon caused by the condensation of water vapor on the surface of the optical element 11 and / or the lens.

[0112] According to the embodiments of the present application, as shown in Figure 4 The optical element 11 includes at least one light-transmitting body. The thickness (i.e., t1 as shown in Figure 4 The thickness of each light-transmitting body ranges from 1.0 mm to 3.0 mm.

[0113] In some illustrative embodiments, the thickness of each light-transmissive body includes, but is not limited to, any value configured to be 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2.0 mm, 2.1 mm, 2.2 mm, 2.3 mm, 2.4 mm, 2.5 mm, 2.6 mm, 2.7 mm, 2.8 mm, 2.9 mm, and 3.0 mm. It should be understood that embodiments of the present application are not limited thereto.

[0114] Specifically, the optical element should satisfy the required heat preservation, structural strength, optical requirements, and other design requirements.

[0115] In some illustrative embodiments, the optical element 11 is adapted to shield and protect the lens as necessary. In detail, the optical element 11 includes, but is not limited to, a flat mirror. Further, the light-transmissive body adopted by the optical element 11 includes, but is not limited to, any one of optical glass, plastic (such as polycarbonate, acrylic polymer, polymethyl methacrylate, etc.), crystal, and other optical materials suitable for manufacturing optical elements. In this way, the optical element arranged in front of the lens has certain anti-collision and anti-impact performance, which can prevent the lens from being damaged due to the falling and / or collision of the shooting device. It should be understood that embodiments of the present application are not limited thereto.

[0116] In addition to the protection function, the optical element 11 can also adopt other lenses with certain optical effects, for example, the optical element 11 includes, but is not limited to, any one of a spherical mirror, an aspherical mirror, a convex optical element, a concave optical element, a coated lens (such as a UV lens), and other lenses with optical effects.

[0117] According to embodiments of the present application, as shown in Figure 4 The optical element 11 includes at least two light-transmissive bodies, and the at least two light-transmissive bodies are arranged in a spaced manner. Among them, the adjacent light-transmissive bodies have a heat insulation layer therebetween.

[0118] In some illustrative embodiments, the optical element 11 includes a first light-transmissive body 111 and a second light-transmissive body 112 arranged in a stacked manner. In detail, the two light-transmissive bodies (i.e., the first light-transmissive body 111 and the second light-transmissive body 112) are arranged in a spaced and substantially parallel manner on the connecting member 12. Further, the cavity formed between the two light-transmissive bodies can form a heat insulation layer 113 by extracting vacuum or filling a heat-insulating medium (such as inert gas), so as to reduce the heat exchange between the external environment and the space 125, thereby preventing the lens 4 or the inner surface of the optical element 11 from fogging due to rapid temperature change.

[0119] According to embodiments of the present application, as shown in Figure 1 and Figure 2As shown, the connecting member 12 comprises a first part 121 and a second part 122. The optical element 11 is disposed on the first part 121. The second part 122 is connected with the first part 121 and is adapted to be assembled with the lens to detachably connect the connecting member 12 with the lens.

[0120] Referring to Figure 2 As shown, in some illustrative embodiments, one of the faces (e.g. Figure 2 the inner end face of the first part and the outer end face of the second part) facing each other of the first part 121 and the second part 122 is provided with a recess, and the other is provided with a protrusion matched with the recess to enable the first part 121 and the second part 122 to be embedded and connected. Further, the second part 122 is provided with a supporting face (e.g. Figure 2 the upper end face as shown) to support the optical element 11, and the first part 121 is wrapped along the outer edge of the optical element 11 and connected with the second part 122 to form an integral structure of the lens protection device (i.e. the optical element 11, the first part 121 and the second part 122 can remain connected to be transferred or assembled with other devices without the effect of non-external force disassembly). The optical element 11 includes but is not limited to being adhered to the supporting face of the second part 122 by spot gluing or double-sided adhesive. It should be understood that the embodiments of the present application are not limited thereto.

[0121] For example, the first part 121 and the second part 122 can be integrally formed of the same material.

[0122] In such an embodiment, the first part 121 and the second part 122 are in a split structure, which is more convenient in process and has a lower processing cost than the integrally formed way. Moreover, the first part 121 and the second part 122 can be adaptively designed for different design purposes (which will be described in detail in the following embodiments).

[0123] Referring to Figure 2 As shown, in some illustrative embodiments, the end (e.g. Figure 2 the lower end as shown) of the second part 122 away from the first part 121 forms an engaging end. In detail, the engaging end is configured to engage with another engaging end (not shown in the figure) provided on the front port of the lens or the main body of the photographing device.

[0124] For example, the engaging end of the second part 122 and the other engaging end can be connected by screw threads, a bayonet connection, a plug-in knife connection or any other connection suitable for connecting the lens protection device to the photographing device.

[0125] Further, the part of the second part 122 forming the engaging end faces the engaging face (e.g. Figure 2The lower surface shown is also provided with a sealing element 14. Specifically, the sealing element 14 is, but is not limited to, bonded to the mating surface by an adhesive element 13 (such as double-sided tape or adhesive provided in an adhesive groove), and when the connector 12 is assembled in the shooting device, it tightly presses against the surface of the lens to form a seal between the connector 12 and the lens. This improves the sealing performance at the connection point between the connector 12 and the lens, further enhancing the waterproof and dustproof effect.

[0126] According to embodiments of the present invention, such as Figure 1 and Figure 2 As shown, the first part 121 is made of a first material, and the second part 122 is made of a second material. The thermal conductivity of the first material is less than that of the second material.

[0127] In some illustrative embodiments, the second part 122 may include, but is not limited to, being made of metal to connect with the lens or the main body of the shooting device and / or form a contact with the lens mount. Furthermore, the first part 121 may include, but is not limited to, being overmolded with at least one of thermoplastic, thermosetting, and rubber materials (if two or more materials are used, it may be made by multi-color injection molding) outside the second part 122.

[0128] In this embodiment, the first part 121, made of a material with low thermal conductivity, is located outside the second part 122, so as to accommodate at least a portion of the second part 122 (e.g., Figure 2 The upper part (as shown) is surrounded by a first part 121 exposed on the outside for the user to hold and use, thus insulating the heat of the second part 122 from being transferred to the outside and preventing the user from being burned. In addition, the rubber-coated first part 121 has a wider range of textures and colors than the metal-made second part 122, which helps to improve the aesthetics of the product.

[0129] Reference Figure 3 As shown, according to an embodiment of the present invention, a first hole 123 is disposed on at least one of the first part 121 and the second part 122.

[0130] According to embodiments of the present invention, such as Figure 3 As shown, the first hole 123 is along the height direction of the connector 12 (e.g., Figure 2 (as shown in the x-direction) configuration, for example, the first hole 123 extends through the first part 121 and / or the second part 122 along the height direction of the connector 12.

[0131] According to embodiments of the present invention, such as Figure 1 and Figure 3As shown, the first part 121 is configured as a substantially annular structure, and the inner edge of the first part 121 is formed with a recess 1211. A first hole 123 is formed on the second part 122, and in the orthographic projection along the optical axis direction of the lens, the projection of the first hole 123 coincides with the projection of the recess 1211.

[0132] In some illustrative embodiments, as shown in Figure 1 and Figure 3 , the first part 121 is configured as an inner circle and outer square approximate annular structure. In detail, the inner diameter of the circular hole formed by the inner edge is substantially the same as the outer diameter of the lens to be fitted, so as to be closely covered outside the lens in the assembled state.

[0133] In some illustrative embodiments, as shown in Figure 1 and Figure 3 , the side of the second part 122 facing the first part 121 is formed with a stepped structure, and the optical element 11 is fitted in the uppermost stepped structure (as shown in Figure 3 ) and is supported on the support surface. Further, there is a height difference (as shown in Figure 2 x direction) between the next stepped structure and the support surface, and the first hole 123 penetrates the stepped structure to communicate the space 125 defined below the optical element 11 with the environment outside the lens.

[0134] According to an embodiment of the present application, as shown in Figure 2 , the first film 1242 is arranged in the first hole 123.

[0135] In some illustrative embodiments, as shown in Figure 1 and Figure 2 , the end of the first hole 123 outside the space 125 (as shown in Figure 2 lower end) forms an annular groove recessed in the second part 122. In detail, the film structure 124 with the first film 1242 is arranged in the groove. Further, the film structure 124 further includes an annular connecting part 1241 located outside the first film 1242 to connect the first film 1242 to the second part 122 and make the first film 1242 face the first hole 123. Further, the diameter of the first film 1242 is configured to be less than or equal to the aperture of the first hole 123 (for example, a circular hole, if the first hole 123 is a non-circular hole, the cross-sectional area of the first film 1242 is less than or equal to the cross-sectional area of the non-circular hole). Wherein, the connecting part 1241 includes but is not limited to a double-sided tape in the form of an annular ring to bond the first film 1242 in the first hole 123.

[0136] In an illustrative embodiment, the diameter of the first hole 123 includes but is not limited to being configured as 4mm to 5mm. Such as 4mm, 4.1mm, 4.2mm, 4.3mm, 4.4mm, 4.5mm, 4.6mm, 4.7mm, 4.8mm, 4.9mm and 5mm. Further, the diameter of the first film 1242 includes but is not limited to being configured as 1mm to 2mm. Such as 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm and 2mm. It should be understood that embodiments of the present application are not limited thereto.

[0137] For example, the diameter of the first hole 123 can also be configured as 2mm, 3mm, 6mm or any other value. Correspondingly, the diameter of the first film 1242 can also be configured as 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 3mm, 4mm or any other value.

[0138] In such an embodiment, the first film 1242 is arranged in the first hole 123, so that the first film 1242 is hidden in the second part 122. In this way, not only the first film 1242 and the connecting piece 12 have better integrity, so as to be more beautiful, but also the first film 1242 can be prevented from falling off due to frequent contact with the outside during use.

[0139] According to an embodiment of the present application, as shown in Figure 2 In the orthographic projection along the optical axis direction of the lens, the projection of the first hole 123 is close to the edge of the projection of the first part 121. The shortest distance between the edge of the first hole 123 and the edge of the first part 121 is 0.1mm to 5mm.

[0140] In some illustrative embodiments, as shown in Figure 2 The edge of the first hole 123 is configured to have a shortest distance of 0.1mm to 5mm from the edge of the first part 121 (which can be regarded as the connecting piece 12), i.e. 0.1mm≤d1≤5mm. Further, the edge of the first hole 123 is also configured to have a shortest distance of 20mm to 50mm from the optical axis of the lens (which can be regarded as the center line of the lens protection device), i.e. 20mm≤d2≤50mm.

[0141] In an illustrative embodiment, the edge of the first hole 123 is configured to have a shortest distance from the edge of the first portion 121 including but not limited to being configured to have any value in the range of 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2.0 mm, 2.1 mm, 2.2 mm, 2.3 mm, 2.4 mm, 2.5 mm, 2.6 mm, 2.7 mm, 2.8 mm, 2.9 mm, 3.0 mm, 3.1 mm, 3.2 mm, 3.3 mm, 3.4 mm, 3.5 mm, 3.6 mm, 3.7 mm, 3.8 mm, 3.9 mm, 4.0 mm, 4.1 mm, 4.2 mm, 4.3 mm, 4.4 mm, 4.5 mm, 4.6 mm, 4.7 mm, 4.8 mm, 4.9 mm, and 5.0 mm.

[0142] In an illustrative embodiment, the edge of the first hole 123 is further configured to have a shortest distance from the optical axis of the lens including but not limited to being configured to have any value in the range of 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, 26 mm, 27 mm, 28 mm, 29 mm, 30 mm, 31 mm, 32 mm, 33 mm, 34 mm, 35 mm, 36 mm, 37 mm, 38 mm, 39 mm, 40 mm, 41 mm, 42 mm, 43 mm, 44 mm, 45 mm, 46 mm, 47 mm, 48 mm, 49 mm, and 50 mm. It should be understood that embodiments of the present application are not limited thereto.

[0143] The shortest distance from the edge of the first hole to the edge of the first portion (i.e. the connecting member) and / or the shortest distance from the edge of the first hole to the optical axis of the lens should be appropriate to the actual size of the shooting device and the lens configured by the shooting device to meet the overall design requirements.

[0144] In some illustrative embodiments, a plurality of first holes 123 can be provided on the connecting member 12. For the convenience of expression, a second hole is used to represent, in detail, at least one first hole 123 and at least one second hole are provided on the connecting member 12.

[0145] For example, at least a portion of the first holes 123 and at least a portion of the second holes can be symmetrically arranged with respect to the center line of the connecting member 12 (which can also be regarded as the optical axis of the lens). Specifically, it can be axisymmetric and / or centrosymmetric.

[0146] Reference Figure 5As shown, according to the embodiment of the present application, the first hole 123 is arranged along the width direction (e.g. the y direction as shown) of the connecting member 12. In detail, the first hole 123 penetrates the wall of the first part 121 or the second part 122 along the width direction (e.g. the y direction as shown) of the connecting member 12. Figure 5 As shown, according to the embodiment of the present application, the first hole 123 is arranged along the width direction (e.g. the y direction as shown) of the connecting member 12. In detail, the first hole 123 penetrates the wall of the first part 121 or the second part 122 along the width direction (e.g. the y direction as shown) of the connecting member 12. Figure 5

[0147] As shown, according to the embodiment of the present application, the first hole 123 is arranged along the width direction (e.g. the y direction as shown) of the connecting member 12. In detail, the first hole 123 penetrates the wall of the first part 121 or the second part 122 along the width direction (e.g. the y direction as shown) of the connecting member 12. Figure 3 As shown, according to the embodiment of the present application, the first hole 123 is arranged along the width direction (e.g. the y direction as shown) of the connecting member 12. In detail, the first hole 123 penetrates the wall of the first part 121 or the second part 122 along the width direction (e.g. the y direction as shown) of the connecting member 12.

[0148] As shown, according to the embodiment of the present application, the first hole 123 is arranged along the width direction (e.g. the y direction as shown) of the connecting member 12. In detail, the first hole 123 penetrates the wall of the first part 121 or the second part 122 along the width direction (e.g. the y direction as shown) of the connecting member 12. Figure 5

[0149] As shown, according to the embodiment of the present application, the first hole 123 is arranged along the width direction (e.g. the y direction as shown) of the connecting member 12. In detail, the first hole 123 penetrates the wall of the first part 121 or the second part 122 along the width direction (e.g. the y direction as shown) of the connecting member 12. Figure 5 Figure 3 As shown, according to the embodiment of the present application, the first hole 123 is arranged along the width direction (e.g. the y direction as shown) of the connecting member 12. In detail, the first hole 123 penetrates the wall of the first part 121 or the second part 122 along the width direction (e.g. the y direction as shown) of the connecting member 12.

[0150] As shown, according to the embodiment of the present application, the first hole 123 is arranged along the width direction (e.g. the y direction as shown) of the connecting member 12. In detail, the first hole 123 penetrates the wall of the first part 121 or the second part 122 along the width direction (e.g. the y direction as shown) of the connecting member 12.

[0151] As shown, according to the embodiment of the present application, the first hole 123 is arranged along the width direction (e.g. the y direction as shown) of the connecting member 12. In detail, the first hole 123 penetrates the wall of the first part 121 or the second part 122 along the width direction (e.g. the y direction as shown) of the connecting member 12. Figure 5 As shown, according to the embodiment of the present application, the first hole 123 is arranged along the width direction (e.g. the y direction as shown) of the connecting member 12. In detail, the first hole 123 penetrates the wall of the first part 121 or the second part 122 along the width direction (e.g. the y direction as shown) of the connecting member 12.

[0152] Figure 5 ​​​​As shown, the heating part 126 includes but is not limited to an electric heating wire and / or an electric heating sheet. In detail, the heating part 126 is arranged on the connecting part 12 and connected with an external circuit, which can be an external power supply or integrated in the circuit of the photographing device. Further, the heating power of the heating part 126 can be configured to be adjustable (such as adjusting the current size or the number of the heated electric heating wire) to more accurately adjust the temperature of the optical element 11 and further more quickly adjust the gas pressure in the space 125 and the ambient gas pressure outside the lens.

[0153] Referring to Figure 6 As shown, the lens protection device further includes at least one second film 1243. The second film 1243 is arranged in a stack with the first film 1242.

[0154] In some illustrative embodiments, the film structure 124 includes the first film 1242, the second film 1243 and the annular connecting part 1241. In detail, the connecting part 1241 is located between the first film 1242 and the second film 1243 to connect the first film 1242 and the second film 1243 arranged in a stack. In some embodiments, a gap can be formed between the first film 1242 and the second film 1243. The number of layers of the second film 1243 includes but is not limited to 1 layer, 2 layers, 3 layers, 4 layers, 5 layers and any other number of layers more than 5 layers, which is appropriate to meet the corresponding design needs.

[0155] In such embodiments, the gap formed by the spaced first film 1242 and the second film 1243 forms a transition cavity, thereby avoiding the gas pressure in the environment outside the lens being greater than the gas pressure in the space 125 (for example, in the scenario that the photographing device is quickly moved from a low-temperature environment to a high-temperature environment for shooting after shooting in the low-temperature environment), which causes the gas backflow. Once the gas backflow occurs, the gap formed between the first film 1242 and the second film 1243 has a pressure stabilizing and buffering effect, so that the gas entering from the outside is only located in the transition cavity and will not continue to enter the space 125 defined by the lens protection device through the first film 1242.

[0156] According to the embodiments of the present application, as Figure 5 As shown, the lens protection device further includes a third film 1244. The third film 1244 is arranged at the second end 1234 of the first hole 123, and the second end 1234 and the first end 1233 are located at two ends of the first hole 123.

[0157] Similar to the above embodiments, in addition to arranging at least one second film 1243 on the first film 1242, the first film 1242 and the third film 1244 can also be arranged at the two ends of the first hole 123 away from each other (for example, Figure 5 ​In some illustrative embodiments, the first hole 123 is configured in a stepped hole manner, as shown in FIG. 1B. The first hole 123 includes a larger hole 1232 and a smaller hole 1231. The diameter of the larger hole 1232 is greater than the diameter of the smaller hole 1231. The diameter of the larger hole 1232 is in the range of 1.0 mm to 6.0 mm, and the diameter of the smaller hole 1231 is in the range of 0.5 mm to 2.0 mm. The diameter of the larger hole 1232 is greater than the diameter of the smaller hole 1231. It should be understood that the embodiments of the present application are not limited thereto.

[0158] For example, the second film 1243 is stacked on the first film 1242, and the first film 1242 and the third film 1244 are respectively arranged at both ends of the first hole 123 in a manner of being used at the same time.

[0159] In some illustrative embodiments, at least one of the first film 1242, the second film 1243, and the third film 1244 is made of a waterproof and breathable film. In detail, the at least one of the first film 1242, the second film 1243, and the third film 1244 is made of a material including but not limited to a polypropylene film, a polyethylene film, a polyvinyl chloride film, a polyurethane film, and the like, and has a porous structure.

[0160] In such an embodiment, the first film, the second film, and the third film 1244 arranged in the first hole 123 are made of a film that prevents liquid droplets and allows water vapor to pass through. In this way, liquid can be effectively prevented from entering the space 125 from the first hole 123, and the gas and the water vapor entrained in the space 125 can be effectively discharged outward under the action of the pressure difference, so that the pressure of the space 125 and the environment outside the lens is eventually equalized or balanced, and the optical element or the lens is less likely to fog.

[0161] According to the embodiments of the present application, referring to FIG. 1B, the first hole 123 is a stepped hole, and the diameter of the larger hole 1232 is in the range of 1.0 mm to 6.0 mm, and the diameter of the smaller hole 1231 is in the range of 0.5 mm to 2.0 mm. The diameter of the larger hole 1232 is greater than the diameter of the smaller hole 1231. Figure 3 In some illustrative embodiments, as shown in FIG. 1B, the diameter of the smaller hole 1231 includes but is not limited to being configured as 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, and 2.0 mm. The diameter of the larger hole 1232 includes but is not limited to being configured as 1.0 mm, 1.5 mm, 2.0 mm, 2.5 mm, 3.0 mm, 3.5 mm, 4.0 mm, 4.5 mm, 5.0 mm, 5.5 mm, and 6.0 mm. When the diameter of the larger hole 1232 is configured as 1.0 mm to 2.0 mm, the diameter of the smaller hole 1231 needs to be smaller than the diameter of the larger hole 1232. It should be understood that the embodiments of the present application are not limited thereto.

[0162] Figure 3

[0163] ​​For example, the aperture of the smaller aperture 1231 can be configured to be any value less than 0.5 millimeters or greater than 2.0 millimeters.

[0164] For another example, the aperture of the larger aperture 1232 can be configured to be any value less than 1.0 millimeter and greater than the aperture of the smaller aperture 1231.

[0165] For yet another example, the first aperture 123 can have more than two stepped structures.

[0166] Referring to Figure 7 As shown in the drawings, some embodiments of the present application also provide a photographing device, which includes a main body 2, a lens 4, and a lens protection device 1. The lens protection device 1 is configured to enclose at least a portion of the lens 2. Optionally, the lens protection device 1 can be the lens protection device 1 in the above embodiments.

[0167] In some illustrative embodiments, the main body 2 includes a housing 21 and an imaging device 22 (located within the main body 2) disposed within the housing 21. In detail, the housing 21 is composed of six rectangular surfaces, including a front surface, a left surface, a right surface, a back surface, a top surface, and a bottom surface. However, in other embodiments, the housing 21 can take different shapes. The housing 21 of the photographing device is usually made of rigid materials, such as plastic, aluminum, steel, or glass fiber. In addition, the photographing device can have additional functions, such as additional buttons, different interface features, replaceable lens 4, cold shoe, and hot shoe.

[0168] Other features of this embodiment are apparent from the above embodiments and will not be repeated here. This embodiment can prevent the optical element or the lens of the lens protection device from fogging, and can improve the sealing of the connection between the connecting member and the lens, thereby further improving the waterproof and dustproof effects and making the use of the user more convenient.

[0169] In some illustrative embodiments, the imaging device 22 in the main body 2 includes a circuit board and an imaging sensor disposed on the circuit board. Further, the imaging sensor is configured to capture images, and the circuit board is configured to provide control signals to the imaging sensor.

[0170] The imaging sensor includes, but is not limited to, a complementary metal-oxide semiconductor (CMOS), a charge-coupled device (CCD), an active pixel sensor (APS), an N-type metal-oxide semiconductor (NMOS) sensor, and any other sensor for collecting visible light or light outside the visible light spectrum and forming an image.

[0171] In some illustrative embodiments, the imaging device further includes other apparatuses (e.g., electronic components). In detail, an image processor or a system on a chip (SoC) can be included, which can be mounted on one or more circuit boards inside the device body. The device communicates with external devices through wired or wireless communication links (e.g., I / O interfaces). These communication links can be direct or indirect connections through other devices or networks (e.g., the Internet). In some implementations, the communication links can be wireless connections such as Wi-Fi, infrared, Bluetooth, cellular network, ZigBee, near field communication (NFC), and ANT+. At the same time, it can also include wired connections such as HDMI, USB, digital video interface, display port interface, Ethernet, and Thunderbolt.

[0172] The imaging device can transmit images (e.g., panoramic images or portions thereof) to external user interface devices through the communication links, which are capable of storing, processing, and displaying the images. Among them, the external user interface devices can be smartphones, tablets, smartwatches, portable computers, personal computing devices, etc. These devices can receive user inputs and interact with the image capture device through the communication links.

[0173] In some illustrative embodiments, the imaging sensor has a mounting end and an imaging end. In detail, the imaging sensor is connected to the circuit board through the mounting end, and the imaging end is opposite to the mounting end. Further, the lens is arranged to face the imaging end so that light from the shooting target is collected on the imaging end.

[0174] Referring to Figure 8 An embodiment of the utility model provides another kind of imaging device, including main body 2 and lens 4. Main body 2 is equipped with connecting structure 23, and connecting structure is detachably connected with lens protection device 1. Lens 4 is arranged in main body 2, and lens protection device 1 includes optical element 11, and optical element 11 and lens 4 surround and form space 125, and lens protection device 1 is equipped with first hole, and first hole is arranged between space 125 and environment 3 outside lens. Optionally, lens protection device 1 can be the lens protection device 1 in the above embodiment.

[0175] In most shooting scenes, lens protection device 1 can be retained on the lens to protect the front group of lenses from scratches, dust and stains. But in some specific use scenarios, lens protection device 1 needs to be removed from main body 2 to meet the corresponding shooting and maintenance requirements. For example, to avoid lens flare, reduce autofocus error, avoid filter glare, long exposure photography and lens maintenance and cleaning, etc.

[0176] In such an embodiment, the lens protection device 1 is detachably arranged on the main body 2 through the connecting structure 23, which is flexible and can be used in various scenarios to facilitate the assembly of the main body 2 and the lens protection device 1. In the state that the lens protection device is assembled on the lens or the main body of the shooting device, an approximately isolated space 125 is formed between the optical element 11 and the lens relative to the environment 3 outside the lens, which can be specifically referred to as shown in Figure 3 .

[0177] According to the ideal gas state equation PV = nRT, the relationship between the states of the ideal gas in the space 125 is described. The physical quantities represented by each symbol in the formula are as follows:

[0178] P is the pressure of the gas, commonly used in units of pascal (Pa) or standard atmosphere (atm).

[0179] V is the volume of the gas, commonly used in units of cubic meters (m 3 ) or liters (L), which is equivalent to the volume of the gas in the space 125.

[0180] n is the amount of substance of the gas, with a unit of mole (mol).

[0181] R is the ideal gas constant, which is approximately 8.314 J / (mol·K).

[0182] T is the absolute temperature of the gas, with a unit of kelvin (K).

[0183] Therefore, under the analysis model of the present embodiment, the temperature of the gas in the space 125 is positively correlated with the gas pressure. The higher the temperature of the gas in the space 125, the greater the gas pressure in the space 125, and the greater the pressure difference between the space 125 and the environment outside the lens, which further affects the dew point temperature of the optical element 11 or the lens, thereby more easily causing fogging.

[0184] Based on the embodiment, in the detachable use scenario of the lens protection device 1 and the main body 2, this problem is more obvious, because it is impossible to block the external water vapor around the lens 4 when disassembled, and to discharge these water vapors when assembled, so that when the gas pressure in the space 125 is relatively large, the water vapor will condense on the optical element 11 or the lens 4 to form fog, i.e., the fogging problem occurs.

[0185] Therefore, in this embodiment, a first hole is further arranged in the lens protection device 1 to communicate the space 125 and the environment 3 outside the lens, so as to reduce the pressure difference between the inside of the space and the environment outside the lens, thereby reducing the condensation.

[0186] According to the embodiment of the present application, the shooting device further comprises a heating portion 126 configured to heat the space or the optical element.

[0187] In some illustrative embodiments, the heating unit 126 can be arranged in the lens protection device and configured to heat the space 125.

[0188] In some illustrative embodiments, as shown in Figure 5 The heating unit 126 can include, but is not limited to, an electric heating wire and / or an electric heating sheet. In detail, the heating unit 126 can be arranged on the connecting member 12 and connected to an external circuit, which can be an external power supply or integrated in the circuit of the photographing device. Further, the heating power of the heating unit 126 can be configured to be adjustable (e.g., adjusting the current size or the number of the electric heating wire to be heated) to more accurately and rapidly adjust the temperature (e.g., the surface temperature of the optical element 11 of the lens protection device 1 and / or the temperature of the front lens of the lens) in the space 125, and further adjust the gas pressure in the space 125 and the ambient gas pressure outside the lens under the adjustment of the temperature on the gas pressure in the space 125 to avoid or reduce the condensation caused by the introduction of the gas in the space 125 due to the disassembly of the lens protection device 1.

[0189] In an illustrative embodiment, the connecting structure 23 can include, but is not limited to, a threaded structure. In detail, the main body 2 is provided with an interface for cooperating with the lens protection device 1, and the interface is provided with an external thread. Correspondingly, the lens protection device 1 is provided with an internal thread to be screwed with the interface, so as to connect the lens protection device 1 to the main body 2. It should be understood that the embodiments of the present application are not limited thereto.

[0190] For example, the connecting structure 23 can also adopt a bayonet and a clamping block structure, i.e., one of the lens protection device 1 and the main body 2 is provided with a bayonet, and the other is provided with a clamping block matched with the bayonet.

[0191] For another example, the connecting structure 23 can also adopt a sleeve, an adhesive member or other arbitrary structure suitable for assembling the lens protection device 1 to the main body 2.

[0192] The other features of the embodiment have been described in the above embodiments and will not be repeated here. The embodiment can prevent the optical element or the lens of the lens protection device from being fogged, improve the sealing of the connecting position of the connecting member and the lens, further improve the waterproof and dustproof effect, and make the user's use more convenient due to the detachable arrangement.

[0193] Referring to Figure 9 to Figure 12As shown, some embodiments of the utility model still provide another shooting device, including main body 2 and lens 4. Main body 2 is equipped with connecting structure 23, and connecting structure 23 is detachably connected with lens protection device 1. Lens 4 is arranged in main body 2, and lens protection device 1 includes optical element, and optical element and lens 4 surround to form space 26. Main body 2 is equipped with first hole 24, and first hole 123 is arranged between space 26 and the environment 3 outside lens, and the air pressure in space 26 is configured to be balanced with the air pressure of the environment 3 outside lens, and light passes through optical element 11 and lens 4 in turn to realize shooting. Optionally, lens protection device 1 can be the lens protection device 1 in the above embodiment.

[0194] According to the embodiments of the utility model, Figure 9 and Figure 10 As shown, the first hole 24 is arranged along the height direction (such as the x direction shown in Figure 10 ) or the width direction (such as the y direction shown in Figure 10 ) of the main body 2.

[0195] According to the embodiments of the utility model, Figure 10 As shown, the first film 252 is arranged on the main body 2 and covers at least part of the first hole 24.

[0196] According to the embodiments of the utility model, Figure 10 As shown, the first film 252 is arranged in the first hole 24.

[0197] In some illustrative embodiments, Figure 9 , Figure 10 and Figure 12 As shown, the wall of the connecting structure 23 of the main body 2 is provided with the first hole 24 penetrating along the width direction (such as the y direction shown in Figure 10 ). Further, the first film 252 (or the film structure 25 including the first film 252) can be arranged in the first hole 24, and the specific mode is similar to the above-mentioned embodiments, which will not be described here. It should be understood that the embodiments of the utility model are not limited thereto.

[0198] According to the embodiments of the utility model, Figure 10 As shown, the lens protection device further includes a heating portion 27. The heating portion 27 is arranged on the main body 2 and is configured to heat the space or the optical element.

[0199] In some illustrative embodiments, Figure 10As shown, the heating part 27 is arranged on the connecting structure 23, and specifically, can be arranged on the inner wall of the connecting structure 23, and is configured to heat the space 26, and the heating part 27 includes but is not limited to an electric heating wire and / or an electric heating sheet. In detail, the heating part 27 is connected with an external circuit, which can be an external power supply or can be integrated into the circuit of the photographing device. Further, the heating power of the heating part 27 can be configured to be adjustable (such as adjusting the current size or the number of the heated electric heating wire), so as to more accurately adjust the temperature of the optical element 11 and / or the front lens of the lens, and further more quickly adjust the gas pressure in the space 26 and the ambient gas pressure outside the lens.

[0200] According to the embodiments of the present application, as shown in Figure 11 As shown, the photographing device further comprises at least one second film 253, and the second film 253 is arranged in layers with the first film 252.

[0201] As shown in Figure 11 As shown, the lens protection device further comprises at least one second film 253. The second film 253 is arranged in layers with the first film 252.

[0202] In some illustrative embodiments, the film structure 25 comprises the first film 252, the second film 253 and the annular connecting part 251. In detail, the connecting part 251 is located between the first film 252 and the second film 253, so as to connect the first film 252 and the second film 253 arranged in layers. In some embodiments, a gap can be formed between the first film 252 and the second film 253. The number of layers of the second film 253 includes but is not limited to 1 layer, 2 layers, 3 layers, 4 layers, 5 layers and other arbitrary numbers of 5 layers or more, which is appropriate to meet the corresponding design needs.

[0203] In such embodiments, the gap formed by the spaced first film 252 and the second film 253 forms a transition cavity, thereby avoiding the gas pressure in the environment outside the lens being greater than the gas pressure in the space 26 (for example, in the scene where the photographing device is quickly moved from a low-temperature environment to a high-temperature environment for shooting after shooting in the low-temperature environment), which causes the gas backflow. Once the gas backflow occurs, the gap formed between the first film 252 and the second film 253 has a pressure stabilizing and buffering effect, so that the gas entering from the outside is only located in the transition cavity, and will not continue to enter the space 26 defined by the lens protection device through the first film 252.

[0204] According to other embodiments of the present application, as shown in Figure 12 As shown, the first film 252 can be arranged at the first end 243 of the first hole 24.

[0205] According to an embodiment of the present invention, the imaging device further includes a third membrane 254. The third membrane 254 is disposed at the second end 244 of the first hole 24, and the second end 244 and the first end 243 are located at opposite ends of the first hole 24 (e.g., ...). Figure 12 (As shown at both ends in the left and right directions).

[0206] In some illustrative embodiments, such as Figure 12 As shown, the diameter of the first membrane 252 is configured to be greater than or equal to the diameter of the first hole 24 (taking a circular hole as an example). Furthermore, the first membrane 252 is disposed outside the first hole 24, and one end of the first hole 24 (see reference) Figure 12 The left end of the first hole 24 shown is completely covered.

[0207] In this embodiment, compared to the method of placing the first membrane 252 inside the first hole 24, the assembly accuracy requirement is lower and the installation is easier.

[0208] According to embodiments of the present invention, such as Figure 12 As shown, the main body 2 also includes a third membrane 254. The third membrane 254 is disposed at the second end 244 of the first hole 24, and the second end 244 and the first end 243 are located at the two ends of the first hole 24.

[0209] Similar to the above embodiments, in addition to stacking at least one second membrane 253 on the first membrane 252, the first membrane 252 and the third membrane 254 can also be respectively disposed at two ends far apart from the first hole 24 (e.g., Figure 12 As shown, a transition cavity (which can be considered as the entire area within the first hole 24) is formed within the first hole 24. It should be understood that embodiments of this utility model are not limited thereto.

[0210] For example, a second membrane 253 may be stacked on top of a first membrane 252, and a first membrane 252 and a third membrane 254 may be disposed at both ends of a first hole 24, and both may be used simultaneously.

[0211] In some illustrative embodiments, at least one of the first membrane 252, the second membrane 253, and the third membrane 254 is a waterproof and breathable membrane. Specifically, this includes, but is not limited to, materials with porous structures such as polypropylene film, polyethylene film, polyvinyl chloride film, and polyurethane film.

[0212] In this embodiment, the first membrane 252, the second membrane 253, and the third membrane 254 disposed in the first hole 24 are made of thin films that prevent droplets from passing through while allowing water vapor to pass through. This effectively prevents liquid from entering the space 26 through the first hole 24, and allows the gas and entrained water vapor in the space 26 to be effectively discharged outward under the action of pressure difference, ultimately achieving equal or balanced air pressure between the space 26 and the ambient air pressure outside the lens, making the optical elements or lens less prone to fogging.

[0213] According to the embodiment of the present application, the first hole 24 is a stepped hole, the diameter of the larger hole 242 ranges from 1.0 mm to 6.0 mm, the diameter of the smaller hole 241 ranges from 0.5 mm to 2.0 mm, the larger hole 242 and the smaller hole 241 constitute a stepped hole, and the diameter of the larger hole 242 is greater than the diameter of the smaller hole 241.

[0214] According to the embodiment of the present application, referring to FIG. 1, the first hole 24 is a stepped hole, the diameter of the larger hole 242 ranges from 1.0 mm to 6.0 mm, the diameter of the smaller hole 241 ranges from 0.5 mm to 2.0 mm, the larger hole 242 and the smaller hole 241 constitute a stepped hole, and the diameter of the larger hole 242 is greater than the diameter of the smaller hole 241. Figure 10 In some illustrative embodiments, as shown in FIG. 1, the diameter of the smaller hole 241 includes but is not limited to being configured as 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, and 2.0 mm. The diameter of the larger hole 242 includes but is not limited to being configured as 1.0 mm, 1.5 mm, 2.0 mm, 2.5 mm, 3.0 mm, 3.5 mm, 4.0 mm, 4.5 mm, 5.0 mm, 5.5 mm, and 6.0 mm. Among them, when the diameter of the larger hole 242 is configured as 1.0 mm to 2.0 mm, the diameter of the smaller hole 241 needs to be smaller than the diameter of the larger hole 242. It should be understood that the embodiments of the present application are not limited thereto.

[0215] Figure 3 For example, the diameter of the smaller hole 241 can be configured as any value less than 0.5 mm or greater than 2.0 mm.

[0216] For another example, the diameter of the larger hole 242 can be configured as any value less than 1.0 mm and greater than the diameter of the smaller hole 241.

[0217] For still another example, the first hole 24 can have more than two levels of stepped structure.

[0218] According to the embodiment of the present application, the main body 2 is provided with at least one second hole, the second hole is arranged between the space and the environment outside the lens, and is located at a different position on the main body 2 from the first hole 24.

[0219] In some illustrative embodiments, a plurality of first holes 24 can be arranged on the main body 2. For the convenience of expression, the second hole is used to represent, in detail, that at least one first hole 24 and at least one second hole are arranged at intervals on the main body 2.

[0220] In some illustrative embodiments, a plurality of first holes 24 can be arranged on the main body 2. For the convenience of expression, the second hole is used to represent, in detail, that at least one first hole 24 and at least one second hole are arranged at intervals on the main body 2. ​

[0221] For example, at least a part of the first holes 24 and at least a part of the second holes can be symmetrically arranged relative to a center line of the main body 2 (which can also be regarded as an optical axis of the lens). Specifically, the arrangement can be axial symmetry and / or central symmetry.

[0222] In such an embodiment, the first holes 24 and the second holes are arranged on the main body 2, i.e., a plurality of first holes 24 are arranged. The space defined between the optical element and the lens can be connected to the environment 3 outside the lens through a plurality of passages (i.e., the first holes 24), so that the space and the environment outside the lens can be more quickly balanced in air pressure. In particular, when the plurality of first holes 24 are symmetrically arranged along the optical axis of the lens, the shooting device can also have symmetry in vision, so that the shooting device is more beautiful.

[0223] It should also be noted that the directional terms mentioned in the embodiments, such as "up", "down", "front", "back", "left", "right", etc., are only with reference to the drawings, and are not intended to limit the scope of the present application. Throughout the drawings, the same elements are represented by the same or similar reference numerals. When the conventional structure or configuration may cause confusion in understanding the present application, it will be omitted.

[0224] The embodiments of the present application are described above. However, these embodiments are only for illustrative purposes, and are not intended to limit the scope of the present application. Although each embodiment is described above, this does not mean that the measures in each embodiment cannot be advantageously combined. The scope of the present application is defined by the appended claims and their equivalents. Without departing from the scope of the present application, those skilled in the art can make various substitutions and modifications, which should all fall within the scope of the present application.

Claims

1. A lens protection device for protecting a lens of a photographing apparatus, wherein, The connection piece comprises: an optical element disposed on the connection piece and opposite to the lens, the optical element and the lens enclosing a space, the connection piece being provided with at least one first hole, the first hole being arranged between the space and an environment outside the lens; and a first film disposed on the connection piece and covering at least part of the first hole. The first film is disposed in the first hole.

2. The lens protection device of claim 1, wherein, Or, the first film is disposed at a first end of the first hole. Further comprising at least one second film, the second film being stacked with the first film.

3. The lens protection device of claim 2, wherein, Further comprising a third film disposed at a second end of the first hole, the second end being located at the other end of the first hole from the first end.

4. The lens protecting device according to claim 2, wherein, The connection piece comprises:

5. The lens protecting apparatus according to claim 1, wherein a first part, the optical element being disposed on the first part; and a second part connected with the first part and adapted to be assembled with the lens to detachably connect the connection piece with the lens or a shooting device, the lens being disposed on the shooting device. The first hole is arranged in at least one of the first part and the second part.

6. The lens protection device of claim 5, wherein, The first hole is arranged along a height direction of the connection piece.

7. The lens protecting device according to claim 6, wherein, The first part is configured in a substantially annular structure, an inner edge of the first part being formed with a recess; 8. The lens protecting device according to claim 5, wherein, The first hole is located at the second part, and in an orthographic projection along an optical axis direction of the lens, a projection of the first hole coincides with a projection of the recess. In the orthographic projection along the optical axis direction of the lens, a projection of the first hole is close to an edge of a projection of the first part; 9. The lens protecting device according to claim 7, wherein, wherein a shortest distance from an edge of the first hole to an edge of the first part is 0.1 mm to 5 mm. The first hole is arranged along a width direction of the connection piece.

10. The lens protecting apparatus according to claim 6, wherein The first part is made of a first material, and the second part is made of a second material; 11. The lens protection device according to any one of claims 5 to 10, wherein, wherein a thermal conductivity of the first material is less than a thermal conductivity of the second material. The optical element comprises at least one light-transmitting body, a thickness of the light-transmitting body being in a range of 1 mm to 3 mm.

12. The lens protecting apparatus according to claim 1, wherein, The optical element comprises at least two light-transmitting bodies, the at least two light-transmitting bodies being arranged in a spaced manner; 13. The lens protecting apparatus according to claim 1, wherein wherein a heat insulation layer is arranged between adjacent light-transmitting bodies. Further comprising a heating part arranged on the connection piece and configured to heat the space or the optical element.

14. The lens protecting apparatus according to claim 1, wherein, The first hole is a stepped hole, a larger hole having a diameter in a range of 1.0 mm to 6.0 mm, and a smaller hole having a diameter in a range of 0.5 mm to 2.0 mm, the larger hole and the smaller hole constituting the stepped hole, the diameter of the larger hole being greater than the diameter of the smaller hole.

15. The lens protecting apparatus according to claim 1, wherein, The connection piece is provided with at least one second hole, the second hole being arranged between the space and an environment outside the lens and located at a different position on the connection piece from the first hole.

16. The lens protecting apparatus according to claim 1, wherein The connection piece comprises:

17. A lens protection apparatus for protecting a lens of a photographing device, wherein, an optical element disposed on the connection piece and opposite to the lens, the optical element and the lens enclosing a space; a distance of the space along a height direction of the connection piece being less than a distance of the space along a width direction of the connection piece, an air pressure in the space being configured to be balanced with an air pressure of an environment outside the lens, and light rays passing through the optical element, the space and the lens in sequence to realize shooting. ​ ​ 18. The lens protection device of claim 17, wherein, The connecting member is provided with at least one first hole, which is arranged between the space and the environment outside the lens.

19. The lens protecting device according to claim 18, wherein, Further comprising a first film, which is arranged on the connecting member and covers at least part of the first hole.

20. The lens protection device of claim 19, wherein, The first film is arranged in the first hole. Or, arranged at the first end of the first hole.

21. The lens protection device of claim 20, wherein, Further comprising at least one second film, which is arranged in layers with the first film.

22. The lens protection device of claim 20, wherein, Further comprising a third film, which is arranged at the second end of the first hole, and the second end is located at the other end of the first hole from the first end.

23. The lens protecting apparatus of claim 17, wherein, The connecting member comprises: A first part, in which the optical element is arranged; and A second part connected with the first part, which is adapted to be assembled with the lens to detachably connect the connecting member with the lens or the shooting device, and the lens is arranged in the shooting device.

24. The lens protecting device according to claim 23, wherein, The first part is made of a first material, and the second part is made of a second material; Wherein, the thermal conductivity of the first material is less than that of the second material.

25. The lens protecting apparatus according to claim 17, wherein, The optical element comprises at least two light-transmitting bodies, and the at least two light-transmitting bodies are arranged at intervals; Wherein, there is a heat insulation layer between adjacent light-transmitting bodies.

26. The lens protecting apparatus according to claim 17, wherein, Further comprising a heating part, which is arranged on the connecting member and is configured to heat the space or the optical element.

27. The lens protecting apparatus of claim 18, wherein, The first hole is a stepped hole, the diameter of the larger hole ranges from 1.0 mm to 6.0 mm, and the diameter of the smaller hole ranges from 0.5 mm to 2.0 mm, the larger hole and the smaller hole constitute the stepped hole, and the diameter of the larger hole is greater than that of the smaller hole.

28. The lens protecting apparatus of claim 18, wherein, The connecting member is provided with at least one second hole, which is arranged between the space and the environment outside the lens and is located at a different position on the connecting member from the first hole.

29. A photographing apparatus, comprising: Comprising: A main body; A lens arranged in the main body; And The lens protection device as claimed in any one of claims 1 to 16 or claims 17 to 28, which is configured to enclose at least part of the lens.

30. A photographing apparatus, comprising: Comprising: A main body provided with a connecting structure, which is detachably connected with a lens protection device; And A lens arranged in the main body, the lens protection device comprising an optical element, the optical element and the lens enclosing a space, and the lens protection device being provided with a first hole arranged between the space and the environment outside the lens.

31. The photographing apparatus according to claim 30, wherein Further comprising a heating part configured to heat the space or the optical element.

32. A photographing apparatus, comprising: Comprising: A main body provided with a connecting structure, which is detachably connected with a lens protection device; And A lens arranged in the main body, the lens protection device comprising an optical element, the optical element and the lens enclosing a space; The main body is provided with a first hole arranged between the space and the environment outside the lens.

33. The photographing apparatus according to claim 32, wherein Further comprising: A first film arranged on the main body and covering at least part of the first hole.

34. The photographing apparatus according to claim 33, wherein Further comprising: The first film is arranged in the first hole. Or, arranged at the first end of the first hole.

35. The photographing apparatus according to claim 34, wherein Further comprising at least one second film arranged in layers with the first film.

36. The photographing apparatus according to claim 34, wherein A third hole is further included and disposed at a second end of the first hole, the second end being opposite to the first end.

37. The photographing apparatus according to claim 32, wherein The first hole is disposed along a height direction or a width direction of the main body.

38. The photographing apparatus according to claim 32, wherein A heating unit is further included and disposed at the main body and configured to heat the space or the optical element.

39. The photographing apparatus according to claim 32, wherein The first hole is a stepped hole, a larger hole having a diameter ranging from 1.0 mm to 6.0 mm, and a smaller hole having a diameter ranging from 0.5 mm to 2.0 mm, the larger hole and the smaller hole constituting the stepped hole, the diameter of the larger hole being greater than that of the smaller hole.

40. The photographing apparatus according to claim 32, wherein The main body is provided with at least one second hole, the second hole being disposed between the space and an environment outside the lens and being located at a different position on the main body from the first hole.

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