Optical lens, housing structure thereof, and optical device

Abstract

An optical lens (10), a housing structure (101) thereof, and an optical device (100). The housing structure (101) comprises a first mounting portion (1), a second mounting portion (2), a first optical member (4) and a second optical member (5). The first optical member (4) is arranged on one of the first mounting portion (1) and the second mounting portion (2), and the second optical member (5) is arranged on the other of the first mounting portion (1) and the second mounting portion (2). The first mounting portion (1) and the second mounting portion (2) are spaced apart in a first direction, such that a containing chamber (6) suitable for containing an optical liquid (3) can be formed between the first optical member (4) and the second optical member (5); the position of at least one of the first mounting portion (1) and the second mounting portion (2) in the first direction can be adjusted.

Description

Optical lens and housing structure thereof, optical equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to the Chinese patent application filed with the China Patent Office on December 21, 2023, with application number 202323510120.X and titled “Optical lens and its housing structure, optical device,” the entire contents of which are incorporated by reference into this disclosure. Technical Field

[0003] The present disclosure relates to the technical field of optical focusing, and in particular to an optical lens and a housing structure thereof, and an optical device. Background Art

[0004] In related technologies, optical lenses typically consist of multiple lenses, with gas filling the spaces between them. Adjusting the distance between the lenses adjusts the focal length of the optical device. The lens' shape is fixed, and the fluid between it and the light source is air, which has a low refractive index. To achieve a wide range of focal length adjustment, the size of the optical lens must be increased, which occupies a large space and hinders the lightweighting of the optical device.

[0005] Summary of the Invention

[0006] The purpose of the present disclosure is to provide an optical lens and its housing structure, and an optical device, so as to at least partially solve the technical problems existing in the related art.

[0007] To achieve the above-mentioned object, according to a first aspect of the present disclosure, there is provided a housing structure of an optical lens, the housing structure comprising a first mounting portion, a second mounting portion, an optical liquid, a first optical element, and a second optical element;

[0008] The first optical element is disposed on one of the first mounting portion and the second mounting portion, and the second optical element is disposed on the other of the first mounting portion and the second mounting portion;

[0009] The first mounting portion and the second mounting portion are spaced apart in a first direction so that a cavity suitable for containing an optical liquid can be formed between the first optical element and the second optical element;

[0010] Wherein, a position of at least one of the first mounting portion and the second mounting portion in the first direction is adjustable.

[0011] Optionally, the first mounting portion is connected to the second mounting portion in a positionally adjustable manner in the first direction.

[0012] Optionally, the first mounting portion is provided with an internal thread segment extending along the first direction, and the second mounting portion is provided with an external thread segment;

[0013] The external thread section is threadedly connected to the internal thread section, so that the first mounting portion can be connected to the second mounting portion in an adjustable manner along the first direction.

[0014] Optionally, the first mounting portion includes a first body and a first annular skirt formed at a first end of the first body, and the first optical element is connected to the first annular skirt;

[0015] The first body is provided with the internal thread section.

[0016] Optionally, the second mounting portion includes a second body and a second annular skirt, the second annular skirt is formed at a second end of the second body, and the second optical element is connected to the second annular skirt;

[0017] The second body is provided with the external thread section.

[0018] Optionally, the housing structure further includes a mounting component, the first optical component is connected to the mounting component, and the mounting component is mounted on the first mounting portion.

[0019] Optionally, in the first direction, the position of the mounting member relative to the first mounting portion is adjustable.

[0020] Optionally, the housing structure further includes a screw and a nut, a threaded hole is formed on the first mounting portion, a through hole is formed on the mounting member, the screw passes through the through hole and is threadedly connected to the threaded hole;

[0021] The nut is connected to the screw rod to install the mounting member on the first mounting portion.

[0022] Optionally, the mounting member is configured as an annular member;

[0023] There are multiple screws and multiple nuts, and the screws and nuts correspond to each other one by one;

[0024] A plurality of the screw rods and the nuts are spaced apart along the circumference of the mounting member.

[0025] Optionally, the shell structure further includes an elastic member, which is used to be arranged between the first mounting portion and the mounting member, one end of the elastic member abuts against the first mounting portion, and the other end of the elastic member abuts against the mounting member.

[0026] Optionally, the elastic member is a spring, and the spring is sleeved on the screw.

[0027] Optionally, the housing structure further includes a sealing ring, which is disposed between the first optical element and the second optical element and is used to seal a gap between the first optical element and the second optical element;

[0028] The sealing ring, the first optical component and the second optical component jointly define the cavity.

[0029] Optionally, the housing structure further comprises a liquid injection hole, a first end of the liquid injection hole being in communication with the cavity, and the other end of the liquid injection hole being adapted to be connected to the liquid injection structure. Optionally, the projection of the first optical element in the first direction is a first circle, the diameter of the first circle being greater than or equal to 50 mm; and / or,

[0030] The projection of the second optical element in the first direction is a second circle, and the diameter of the second circle is greater than or equal to 50 mm.

[0031] Optionally, the first optical element is a flexible optical film;

[0032] The second optical element is optical glass. Optionally, the projection of the first optical element in the first direction is circular;

[0033] The thickness of the first optical element is unequal along a direction away from the center of the first optical element.

[0034] According to a second aspect of the present disclosure, an optical lens is provided, comprising an optical liquid and the housing structure of the optical lens as described above, wherein the optical liquid is filled in the cavity.

[0035] According to a third aspect of the present disclosure, an optical device is provided, comprising a light source and the optical lens as described above, wherein the optical lens and the light source are arranged along the first direction.

[0036] According to the above technical solution, since the first optical element and the second optical element are respectively arranged on the first mounting portion and the second mounting portion, the distance between the first mounting portion and the second mounting portion along the first direction (e.g., the direction of light propagation) can be adjusted. By adjusting the distance between the first mounting portion and the second mounting portion, the distance between the first optical element and the second optical element along the first direction (e.g., the direction of light propagation) can be adjusted. In addition, by filling the cavity between the first optical element and the second optical element with an optical liquid having a high refractive index, the distance between the first optical element and the second optical element can be adjusted within a small range in the optical lens provided by the present disclosure, thereby achieving a larger range of focal length adjustment for the optical lens. That is, by adjusting the distance between the first optical element and the second optical element, combined with the optical liquid filled with a high refractive index in the cavity, it is advantageous to achieve a larger range of focal length adjustment for the optical lens while reducing the size of the optical lens, thereby facilitating lightweighting of the optical lens. In other words, compared with the technical solution in the related art in which the optical lens is composed of multiple lenses and the fluid filled between the multiple lenses is air, the optical lens provided by the present disclosure is smaller in size under the same focusing range, thereby facilitating lightweighting of the optical lens.

[0037] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0039] FIG1 is a schematic diagram of a three-dimensional structure of an optical lens provided in an exemplary embodiment of the present disclosure.

[0040] FIG2 is an exploded schematic diagram of a housing structure of an optical lens provided by an exemplary embodiment of the present disclosure.

[0041] FIG3 is a schematic cross-sectional view of an optical lens provided in accordance with an exemplary embodiment of the present disclosure.

[0042] FIG4 is a schematic diagram of the three-dimensional structure of a first mounting portion in a housing structure of an optical lens provided in an exemplary embodiment of the present disclosure.

[0043] FIG5 is a schematic diagram of the three-dimensional structure of a second mounting portion in a housing structure of an optical lens provided in an exemplary embodiment of the present disclosure.

[0044] FIG6 is a schematic structural block diagram of a housing structure and a liquid injection structure of an optical lens provided by an exemplary embodiment of the present disclosure.

[0045] FIG7 is a schematic structural block diagram of an optical device provided by an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0046] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0047] In the present disclosure, unless otherwise stated, the directions or positional relationships indicated by directional words such as "up," "down," "left," and "right" are defined based on the drawing directions shown in the corresponding drawings. They are intended only to facilitate the description of the present disclosure and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific direction, specific directional structure, and operation. Therefore, they should not be understood as limitations on the present disclosure. The terms "inside" and "outside" refer to the inside and outside of the corresponding structural contours. The "first direction" in the drawings and the text generally refers to the front-to-back direction relative to the contour of the optical lens itself, and may also refer to the direction of propagation of the optical lens relative to light. For details, please refer to the directions shown in Figures 2 and 3.

[0048] In addition, it should be noted that the terms used, such as "first" and "second", are used to distinguish one element from another and do not have order or importance. In addition, in the description with reference to the drawings, the same reference numerals in different drawings represent the same elements.

[0049] It should also be noted that, in the description of this disclosure, unless otherwise expressly specified or limited, the terms "disposed," "connected," "connected," and "installed" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; and they may refer to direct connections or indirect connections via an intermediary. Those skilled in the art will understand the specific meanings of these terms in this disclosure based on specific circumstances.

[0050] As mentioned above, in the related art, the shape of the lens is fixed, and the fluid between it and the light source is air, which has a low refractive index. If a wide range of focal length adjustment is to be achieved, the size of the optical lens must be increased. The optical lens occupies a large space, which is not conducive to the lightweighting of the optical equipment.

[0051] In view of this, as shown in Figures 1 to 7, according to the first aspect of the present disclosure, a shell structure 101 of an optical lens 10 is provided, which includes a first mounting portion 1, a second mounting portion 2, a first optical component 4 and a second optical component 5, the first optical component 4 is arranged at one of the first mounting portion 1 and the second mounting portion 2, and the second optical component 5 is arranged at the other of the first mounting portion 1 and the second mounting portion 2, the first mounting portion 1 and the second mounting portion 2 are spaced apart in the first direction so that a cavity 6 suitable for accommodating an optical liquid 3 can be formed between the first optical component 4 and the second optical component 5, wherein the position of at least one of the first mounting portion 1 and the second mounting portion 2 in the first direction can be adjusted.

[0052] For example, the position of the first mounting portion 1 in the first direction may be adjusted alone, or the position of the second mounting portion 2 in the first direction may be adjusted alone, or the positions of the first mounting portion 1 and the second mounting portion 2 in the first direction may be adjusted simultaneously.

[0053] According to the physical properties of light, different liquids have different components and different refractive indices. In other words, different types of optical liquids 3 may have different refractive indices.

[0054] In the above-mentioned optical lens 10, since a cavity 6 suitable for accommodating the optical liquid 3 can be provided between the first optical element 4 and the second optical element 5, and the refractive indices of different types of optical liquids 3 can be different, by reasonably selecting the type of optical liquid 3 filled in the cavity 6, the cavity 6 as a whole can have different refractive indices. When it is desired to obtain an optical lens 10 with a larger focal length adjustment range, an optical liquid 3 with a higher refractive index can be selected.

[0055] Through the above technical solution, since the first optical element 4 and the second optical element 5 are respectively disposed on the first mounting portion 1 and the second mounting portion 2, the distance between the first mounting portion 1 and the second mounting portion 2 along the first direction (e.g., the direction of light propagation) can be adjusted. By adjusting the distance between the first mounting portion 1 and the second mounting portion 2, the distance between the first optical element 4 and the second optical element 5 along the first direction (e.g., the direction of light propagation) can be adjusted. Furthermore, by filling the cavity 6 between the first optical element 4 and the second optical element 5 with an optical liquid 3 having a relatively high refractive index, in the optical lens 10 provided by the present disclosure, adjusting the distance between the first optical element 4 and the second optical element 5 within a small range can also achieve a larger range of focal length adjustment of the optical lens 10. That is, by adjusting the distance between the first optical element 4 and the second optical element 5, in conjunction with filling the cavity 6 with an optical liquid 3 having a relatively high refractive index, it is advantageous to achieve a larger range of focal length adjustment of the optical lens 10 while reducing the size of the optical lens 10, thereby facilitating lightweighting of the optical lens 10. That is to say, compared with the related art, in which the optical lens 10 is composed of multiple lenses and the fluid filled between the multiple lenses is air, under the same focusing range, the optical lens 10 provided by the present disclosure is smaller in size, which is conducive to reducing the size of the optical lens 10 and facilitating the lightweighting of the optical lens 10.

[0056] In the present disclosure, the first mounting portion 1 and the second mounting portion 2 can be directly connected or connected through an intermediate piece, and the present disclosure does not limit this. In one embodiment of the present disclosure, the first mounting portion 1 is connected to the second mounting portion 2 in a positionally adjustable manner in a first direction, that is, the first mounting portion 1 is directly connected to the second mounting portion 2. Such a design is conducive to simplifying the structure of the optical lens 10, reducing the space occupied by the optical lens 10, and facilitating the lightweighting of the optical lens 10.

[0057] The present disclosure does not limit the connection relationship between the first mounting portion 1 and the second mounting portion 2, as long as the first mounting portion 1 and the second mounting portion 2 can adjust the position of the first optical element 4 and the second optical element 5 along the first direction. As an embodiment of the present disclosure, as shown in Figures 2 and 3, the first mounting portion 1 is provided with an internal thread segment 11 extending along the first direction, and the second mounting portion 2 is provided with an external thread segment 21, and the external thread segment 21 is threadedly connected to the internal thread segment 11, so that the first mounting portion 1 can be connected to the second mounting portion 2 in an adjustable position along the first direction. By changing the length of the threaded connection portion between the internal thread segment 11 of the first mounting portion 1 and the external thread segment 21 of the second mounting portion 2, the distance between the first mounting portion 1 and the second mounting portion 2 can be changed, and the distance between the first optical element 4 and the second optical element 5 along the first direction (such as the propagation direction of light) can be changed, thereby achieving the adjustment of the focal length of the optical lens 10, and at the same time, making the operation of position adjustment between the first mounting portion 1 and the second mounting portion 2 relatively simple.

[0058] In addition, since the first mounting portion 1 and the second mounting portion 2 are connected by a threaded connection, the optical lens 10 can adjust the distance between the first mounting portion 1 and the second mounting portion 2 without setting other components (such as a motor, etc.). The structure of the optical lens 10 is relatively simple, and at the same time, the cost generated by setting other components to adjust the distance between the first mounting portion 1 and the second mounting portion 2 is saved. At the same time, it is also beneficial to simplify the structure of the optical lens 10, reduce the space occupied by the optical lens 10, and facilitate the lightweighting of the optical lens 10.

[0059] The present disclosure does not limit the positional relationship between the first optical component 4 and the second optical component 5 on the first mounting portion 1 and the second mounting portion 2. The above-mentioned first optical component 4 can be installed on the first mounting portion 1 or on the second mounting portion 2, and the above-mentioned second optical component 5 can be installed on the first mounting portion 1 or on the second mounting portion 2. As long as the first optical component 4 and the second optical component 5 can cooperate with each other and can adjust the focal length of the optical lens 10, as an embodiment of the present disclosure, as shown in Figures 1 and 2, the above-mentioned first optical component 4 is installed on the first mounting portion 1, and the above-mentioned second optical component 5 is installed on the second mounting portion 2.

[0060] The present disclosure does not limit the specific structure of the first mounting portion 1. Regarding the embodiment in which the first optical component 4 is mounted on the first mounting portion 1 and the second optical component 5 is mounted on the second mounting portion 2, to facilitate mounting the first optical component 4 on the first mounting portion 1, as shown in Figures 2 and 3, the first mounting portion 1 optionally includes a first body 12 and a first annular skirt 13 formed at a first end 121 of the first body 12. The first optical component 4 is connected to the first annular skirt 13, and the first body 12 is provided with an internal thread section 11. This simplifies mounting the first optical component 4 on the first mounting portion 1.

[0061] In addition, since the internal thread segment 11 is formed on the first main body 12, when adjusting the distance between the first mounting portion 1 and the second mounting portion 2, the internal thread segment 11 formed on the first main body 12 will not produce mechanical interference with the first optical component 4, effectively avoiding the situation where the internal thread segment 11 and the first optical component 4 produce mechanical interference when adjusting the distance between the first mounting portion 1 and the second mounting portion 2, which may cause damage to the first optical component 4, thereby improving the service life of the first optical component 4.

[0062] The present disclosure does not limit the specific structure of the second mounting portion 2. To facilitate mounting the second optical element 5 on the second mounting portion 2, as shown in Figures 2 and 4, the second mounting portion 2 optionally includes a second body 22 and a second annular skirt 23. The second annular skirt 23 is formed at a second end 221 of the second body 22. The second optical element 5 is connected to the second annular skirt 23. The second body 22 is provided with an external thread section 21. This simplifies mounting the second optical element 5 on the second mounting portion 2.

[0063] In addition, since the external thread segment 21 is formed on the second main body 22, when adjusting the distance between the first mounting portion 1 and the second mounting portion 2, the external thread segment 21 formed on the second main body 22 will not produce mechanical interference with the second optical component 5, effectively avoiding the situation where the external thread segment 21 and the second optical component 5 produce mechanical interference when adjusting the distance between the first mounting portion 1 and the second mounting portion 2, resulting in damage to the second optical component 5, thereby improving the service life of the second optical component 5.

[0064] With respect to the embodiment in which the first optical component 4 is mounted on the first mounting portion 1 and the second optical component 5 is mounted on the second mounting portion 2, in order to facilitate the installation of the first optical component 4 on the first mounting portion 1, as shown in Figures 1 and 2, the optical lens 10 may optionally further include a mounting member 7, the first optical component 4 being connected to the mounting member 7, and the mounting member 7 being mounted on the first mounting portion 1. In this way, the first optical component 4 is mounted on the first mounting portion 1 via the mounting member 7, and the disassembly and assembly of the first optical component 4 on the first mounting portion 1 is relatively simple. In addition, if the first optical component 4 malfunctions or is damaged during use, the mounting member 7 can be directly removed and replaced with a new first optical component 4 without disassembling the entire optical lens 10, effectively reducing the cost of using the optical lens 10.

[0065] In order to further improve the focusing range of the optical lens 10, optionally, in the first direction, the position of the mounting member 7 is adjustable relative to the first mounting portion 1. Since the first optical member 4 is connected to the mounting member 7, by adjusting the mounting position of the mounting member 7 on the first mounting portion 1 and by adjusting the distance between the mounting member 7 and the first mounting portion 1, the distance between the mounting member 7 and the second mounting portion 2 can be adjusted, and the distance between the first optical member 4 and the second optical member 5 can be adjusted, thereby achieving focal length adjustment of the optical lens 10. The position-adjustable mounting member 7 further improves the focusing range of the optical lens 10, and the performance of the optical lens 10 is better. In this way, multi-level focusing can be achieved, for example, by adjusting the distance between the first mounting portion 1 and the second mounting portion 2 to achieve first-level focusing (large-range focusing), and by adjusting the distance between the mounting member 7 and the first mounting portion 1 to achieve second-level focusing (such as small-range focusing), which is conducive to meeting the focal length focusing requirements of the optical device 100.

[0066] The present disclosure does not limit the connection relationship between the mounting member 7 and the first mounting portion 1. As long as the connection between the mounting member 7 and the first mounting portion 1 is reliable and the distance between the mounting member 7 and the first mounting portion 1 can be adjusted, as an embodiment of the present disclosure, as shown in Figures 1 and 2, the shell structure 101 may further include a screw 71 and a nut 72. A threaded hole 14 is formed on the first mounting portion 1, and a through hole 74 is formed on the mounting member 7. The screw 71 passes through the through hole 74 and is threadedly connected to the threaded hole 14. The nut 72 is connected to the screw 71 to mount the mounting member 7 on the first mounting portion 1. In this way, by rotating the nut 72 to adjust the installation position of the mounting member 7 on the screw 71, the distance between the mounting member 7 and the first mounting portion 1 can be adjusted, and the distance between the first optical member 4 and the first mounting portion 1 can be adjusted to achieve adjustment of the distance between the first optical member 4 and the second optical member 5, thereby achieving adjustment of the focal length of the optical lens 10.

[0067] With respect to the embodiment in which the mounting member 7 is connected to the first mounting portion 1 via a screw 71 and a nut 72, in order to improve the connection strength between the mounting member 7 and the first mounting portion 1, the mounting member 7 is optionally constructed as an annular member, with multiple screws 71 and multiple nuts 72, each corresponding to one another, and multiple screws 71 and multiple nuts 72 being arranged at intervals along the circumference of the mounting member 7. In this way, the mounting member 7 is connected to the first mounting portion 1 via multiple screws 71 and nuts 72, and the connection between the mounting member 7 and the first mounting portion 1 is reliable, effectively preventing the mounting member 7 from being unstable on the first mounting portion 1, loosening, or even falling off from the first mounting portion 1 when the optical lens 10 is in use, thereby preventing the optical lens 10 from being unable to focus normally.

[0068] Since the mounting member 7 is adjustably connected to the first mounting portion 1 along the first direction, in order to enable the mounting member 7 to always be in the preset position, optionally, as shown in Figures 1 and 2, the housing structure 101 further includes an elastic member 73, which is used to be arranged between the first mounting portion 1 and the mounting member 7. One end of the elastic member 73 abuts against the first mounting portion 1, and the other end of the elastic member 73 abuts against the mounting member 7. In this way, the elastic member 73 can always apply an elastic force to the mounting member 7 to move it in a direction away from the first mounting portion 1. When there is no need to adjust the position of the mounting member 7, the action of the elastic member 73 can prevent the mounting member 7 from accidentally moving in the gap between the first mounting portion 1 and the mounting member 7, causing the relative positions of the first optical member 4 and the second optical member 5 to change, thereby affecting the focusing effect of the optical lens 10 and even causing the optical lens 10 to be unable to focus accurately.

[0069] The present disclosure does not limit the specific type of the elastic member 73, as long as the elastic member 73 can apply an elastic force to the mounting member 7 to move it in a direction away from the first mounting portion 1, thereby preventing the mounting member 7 from being displaced in the gap between the mounting member 7 and the first mounting portion 1. Optionally, the elastic member 73 can be a spring, which is sleeved on the screw 71. In this way, one end of the spring can abut against the first mounting portion 1, and the other end of the spring can abut against the mounting member 7. The mounting member 7 can always be clamped between the spring and the nut 72, and the positioning of the mounting member 7 on the first mounting portion 1 is reliable. The mounting member 7 can be stably installed on the first mounting portion 1 without the need to design a separate elastic member 73, effectively saving the production and manufacturing costs of the optical lens 10.

[0070] As another embodiment, the elastic member 73 may also be silicone rubber, which is suitable for being arranged between the mounting member 7 and the first mounting portion 1 , with one end of the silicone rubber abutting against the first mounting portion 1 and the other end of the silicone rubber abutting against the mounting member 7 .

[0071] To prevent the optical liquid 3 from leaking from the optical lens 10 when the optical lens 10 is filled with the optical liquid 3, the optical lens 10 optionally further includes a sealing ring 8, as shown in Figures 1 and 2. The sealing ring 8 is disposed between the first optical element 4 and the second optical element 5. The sealing ring 8 is used to seal the gap between the first optical element 4 and the second optical element 5. The sealing ring 8, the first optical element 4, and the second optical element 5 can collectively define a cavity 6. In this way, by properly arranging the sealing ring 8, one end of the sealing ring 8 can abut against the first optical element 4, and the other end of the sealing ring abuts against the second optical element 5. The sealing ring 8 has a good sealing effect, effectively preventing the optical liquid 3 from leaking from the gap between the first optical element 4 and the second optical element 5, which could cause the optical lens 10 to malfunction.

[0072] The present disclosure does not limit the connection relationship between the sealing ring 8 and the first optical element 4 and the second optical element 5. As one embodiment of the present disclosure, one end of the sealing ring 8 can be bonded to the first optical element 4, and the other end of the sealing ring 8 can be bonded to the second optical element 5, so that the sealing ring 8, the first optical element 4 and the second optical element 5 jointly define a cavity 6. As another embodiment, the first optical element 4 and the second optical element 5 can also be provided with grooves, and the two ends of the sealing ring 8 are respectively engaged with the grooves on the first optical element 4 and the second optical element 5, so that the sealing ring 8, the first optical element 4 and the second optical element 5 jointly define a cavity 6. It is understandable that in other embodiments of the present disclosure, the housing structure may not be provided with the above-mentioned sealing ring 8, and the first mounting portion 1, the second mounting portion 2, the first optical element 4 and the second optical element 5 in the embodiment of Figure 1 can be directly used to jointly define the above-mentioned cavity 6.

[0073] In addition, the inner surface of the sealing ring 8 can also cooperate with the first optical component 4 and the second optical component 5 to define a cavity 6 for accommodating the optical liquid 3 without adding other structures. This is conducive to simplifying the overall structure of the optical lens 10 and saving the production and manufacturing costs of the optical lens 10.

[0074] To further improve the focusing range of the optical lens 10, the housing structure 101 may optionally include a liquid injection hole 9, as shown in FIG6 . A first end of the liquid injection hole 9 is in communication with the cavity 6, and the other end of the liquid injection hole 9 is adapted to be connected to the liquid injection structure 20. The liquid injection structure 20 and the liquid injection hole 9 allow the type and volume of the optical liquid 3 filled in the cavity 6 to be adjusted. Thus, by changing the type or volume of the optical liquid 3 filled in the cavity 6 (e.g., so that the refractive index of the cavity 6 is different when the optical liquid 3 is filled than when the optical liquid 3 is not filled), the overall refractive index of the cavity 6 can be changed, thereby changing the overall refractive index of the optical lens 10. That is to say, when the focal length of the optical device 100 needs to be adjusted, the overall refractive index of the optical lens 10 can be changed by changing the type of optical liquid 3 filled in the cavity 6 and / or changing the volume of the optical liquid 3 filled in the cavity 6, thereby achieving focal length adjustment of the optical device 100. The focusing of the optical lens 10 can also be achieved without changing the distance between the first optical element 4 and the second optical element 5, which is conducive to further reducing the size of the optical lens 10 and simplifying the structure of the optical lens 10.

[0075] The present disclosure does not limit the specific structure of the injection hole 9, as long as the cavity 6 can be connected to the injection structure through the injection hole 9. As an embodiment of the present disclosure, as shown in the figure, the injection hole is formed on the second optical element 5, and the injection hole extends in a direction away from the first optical element 4.

[0076] The present disclosure does not limit the type of liquid injection structure 20, as long as the liquid injection structure can adjust the type and volume of the optical liquid 3 filled in the cavity 6. As one embodiment of the present disclosure, the liquid injection structure 20 can be a high-precision syringe pump. The high-precision syringe pump can achieve liquid injection or pumping at a flow rate range of 1pL / min to 40mL / min, and can accurately and quickly change the type and volume of the optical liquid 3 filled in the cavity 6.

[0077] Here, the present disclosure does not limit the specific shape and size of the first optical element 4 constituting the above-mentioned shell structure 101. Optionally, the projection of the first optical element 4 in the first direction is a first circle, and the diameter of the first circle is greater than or equal to 50 mm.

[0078] Since the aperture of the first optical element 4 is large, the volume of the cavity 6 defined by the first optical element 4, the second optical element 5 and the sealing ring 8 is large. For injecting or extracting a unit volume of optical liquid 3 into or from the cavity 6, the volume change rate of the optical liquid 3 contained in the cavity 6 can be reduced, thereby improving the focusing accuracy of the optical lens 10.

[0079] Furthermore, according to the physical properties of light, under the same conditions and with a constant wavelength, the light throughput and resolution of optical lens 10 are directly proportional to the aperture of optical lens 10. In other words, the larger the aperture of optical lens 10, the greater the light throughput and resolution of optical lens 10, and the better the optical performance of optical lens 10. In other words, a larger first optical element 4 is beneficial for improving the optical performance of optical lens 10, resulting in greater light throughput and resolution.

[0080] Optionally, the projection of the second optical element 5 in the first direction is a second circle, and the diameter of the second circle is greater than or equal to 50 mm. Similarly, it can be seen that a larger second optical element 5 is also beneficial to improving the optical performance of the optical lens 10, and the optical lens 10 has a larger light flux and resolution.

[0081] The present disclosure does not limit the material of the first optical element 4, as long as the first optical element 4 has good optical performance. As one embodiment of the present disclosure, the first optical element 4 is a flexible optical film. Since the flexible optical film is an optically transparent elastic film, and an optical liquid 3 is filled between the flexible optical film and the second optical element 5, by varying the volume of the optical liquid 3 filled between the flexible optical film and the second optical element 5, the flexible optical film can be deformed under the pressure of the optical liquid 3, changing the surface shape and curvature of the flexible optical film, thereby changing the refractive index of the flexible optical film. In other words, by varying the volume of the optical liquid 3 filled between the flexible optical film and the second optical element 5, the refractive index of the flexible optical film can also be changed, thereby achieving focus adjustment of the optical lens 10 and further improving the focus adjustment range of the optical lens 10.

[0082] Here, it can be understood that by changing the radius of the flexible optical film, the curvature of the flexible optical film can be changed, so that the flexible optical film has different focusing ranges. In this way, by reasonably designing the size of the flexible optical film, the flexible optical film can have a larger focusing range, and by continuously injecting or extracting the optical liquid 3, continuous zoom can also be achieved.

[0083] It should be noted that increasing the aperture of the first optical element 4 can not only make the flexible optical film have a larger focusing range, but also increase the volume of the cavity 6 defined by the first optical element 4, the second optical element 5 and the sealing ring 8, thereby increasing the volume of the optical liquid 3 contained in the cavity 6. For the injection or extraction of a unit volume of optical liquid 3 into or from the cavity 6, the volume change rate of the optical liquid 3 contained in the cavity 6 can be reduced, thereby improving the focusing accuracy of the optical lens 10.

[0084] At the same time, while the dimensions of the flexible optical film remain unchanged, by increasing the thickness of cavity 6 along the first direction (e.g., the direction of light propagation) and / or increasing the volume of cavity 6, the overall refractive index of cavity 6 can be changed, thereby enabling the optical lens 10 to have a different focusing range. Thus, by rationally designing the dimensions of cavity 6, the flexible optical film can also have a wider focusing range. Furthermore, because flexible optical films generally have a lower elastic modulus, higher tear strength and elongation at break, and a wider operating temperature range, they are adaptable to a variety of complex working conditions and environmental conditions, effectively extending the service life of the optical lens 10.

[0085] The present disclosure does not limit the type of flexible optical film, as long as the flexible optical film can deform under the squeeze of the optical fluid 3 to adjust the focal length of the optical lens 10. As one embodiment of the present disclosure, the first optical element 4 is a PDMS film. The shape of the PDMS film is determined by factors such as the prepolymer-curing agent ratio, elastic modulus, Poisson's ratio, film thickness, initial film shape, and filling liquid pressure, and is independent of the filling liquid. Its main chain is a silicon-oxygen-silicon molecular structure, which has a very low elastic modulus, high tear strength and elongation at break. The operating temperature range is -45 to 200°C. The PDMS film has excellent performance and is suitable for various complex working conditions and environmental conditions.

[0086] In addition, by changing the ratio of prepolymer to curing agent in the PDMS film, for example, the ratio can be increased from 5:1 to 40:1, and the Young's modulus of the PDMS film can be reduced from 1-3 MPa to 0.01-0.1 MPa. Under the same film thickness, liquid pressure and other conditions, the deformation and curvature of the film increase, which can further improve the zoom range of the optical lens 10.

[0087] As another embodiment, the first optical element 4 may also be a composite film of silicon dioxide and titanium dioxide.

[0088] To prevent spherical aberration in the first optical element 4, which can cause blurred and distorted imaging due to light rays entering the first optical element 4 from different positions having different focal points in the first optical element 4, the projection of the first optical element 4 in the first direction is optionally circular, and the thickness of the first optical element 4 varies along directions away from the center of the first optical element 4. Thus, by properly designing the thickness of the first optical element 4, the distribution of the radius of curvature of the first optical element 4 can be changed, thereby reducing the spherical aberration of the first optical element 4 and improving the imaging quality of the optical lens 10.

[0089] In the present disclosure, the first optical element 4 can have any appropriate shape, so that the thickness of the first optical element 4 is unequal. As an exemplary embodiment of the present disclosure, the first optical element 4 can optionally be constructed as an aspheric film with gradually increasing thickness away from the center of the first optical element 4 (similar to the aspheric lens used for eyeglasses), thereby reducing the spherical aberration of the first optical element 4. The present disclosure does not limit the material of the second optical element 5, as long as the optical performance of the second optical element 5 is good. As an embodiment of the present disclosure, the second optical element 5 can be optical glass. In other embodiments, the second optical element 5 can also be an optical crystal, etc.

[0090] The present disclosure does not limit the type of optical liquid 3, as long as the optical liquid 3 has high transparency and chemical stability and meets the requirements of the optical lens 10. As one embodiment of the present disclosure, the optical liquid 3 may include diiodomethane. In other embodiments, the optical liquid 3 may also be pure water, a nanomaterial solution, etc.

[0091] According to a second aspect of the present disclosure, an optical lens 10 is provided. The optical lens 10 may include the above-mentioned optical liquid 3 and the above-mentioned housing structure 101 , wherein the optical liquid 3 is filled in the cavity 6 .

[0092] The optical lens 10 has all the beneficial effects of the housing structure 101 of the optical lens 10 described above, which will not be described in detail here.

[0093] According to a third aspect of the present disclosure, as shown in FIG7 , an optical device 100 is provided, comprising a light source 30 and the optical lens 10 described above, wherein the optical lens 10 and the light source 30 are arranged along a first direction. Thus, the optical lens 10 can focus the light emitted by the light source 30, thereby providing a clear image of the optical device 100.

[0094] The present disclosure does not limit the specific type of optical device 100; it can be any optical device 100 suitable for using the optical lens 10. For example, the optical device 100 can be a lamp, a projection device, a telescope, a night vision device, etc. The lamp can be a chandelier, a table lamp, a vehicle headlight, etc.; the projection device can be a projector, a laser TV, etc., and the present disclosure does not limit these.

[0095] To sum up, by rotating the nut 72, the positions of the first optical component 4 and the second optical component 5 can be adjusted, and the volume of the cavity 6 arranged between the first optical component 4 and the second optical component 5 can be changed. By adjusting the position between the optical lens 10 and the light source 30, the initial focusing of the optical lens 10 on the optical device 100 can be achieved.

[0096] At the same time, when the optical device 100 is in use, the focal length of the optical device 100 can be adjusted by adjusting the distance between the first mounting part 1 and the second mounting part 2, and adjusting the type and / or volume of the optical liquid 3 filled in the cavity 6, and changing the refractive index of the cavity 6 and / or the first optical element 4.

[0097] In addition, by reasonably designing the curvature radius of the first optical element 4 , the spherical aberration of the first optical element 4 can be effectively corrected, so that the imaging of the optical lens 10 is clear.

[0098] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0099] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0100] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A housing structure (101) of an optical lens (10), characterized in that: The housing structure (101) comprises a first mounting portion (1), a second mounting portion (2), a first optical component (4) and a second optical component (5); The first optical component (4) is arranged on one of the first mounting portion (1) and the second mounting portion (2), and the second optical component (5) is arranged on the other of the first mounting portion (1) and the second mounting portion (2); The first mounting portion (1) and the second mounting portion (2) are spaced apart in a first direction so that a cavity (6) suitable for containing the optical liquid (3) can be formed between the first optical component (4) and the second optical component (5); Wherein, the position of at least one of the first mounting portion (1) and the second mounting portion (2) in the first direction is adjustable.

2. The housing structure (101) according to claim 1, characterized in that: The first mounting portion (1) is connected to the second mounting portion (2) in a positionally adjustable manner in the first direction.

3. The housing structure (101) according to claim 2, characterized in that: The first mounting portion (1) is provided with an internal thread segment (11) extending along the first direction, and the second mounting portion (2) is provided with an external thread segment (21); The external thread section (21) is threadedly connected to the internal thread section (11), so that the first mounting portion (1) can be connected to the second mounting portion (2) in an adjustable manner along the first direction.

4. The housing structure (101) according to claim 3, characterized in that: The first mounting portion (1) comprises a first main body (12) and a first annular skirt (13) formed at a first end (121) of the first main body (12), and the first optical element (4) is connected to the first annular skirt (13); The first body (12) is provided with the internal thread section (11).

5. The housing structure (101) according to claim 3 or 4, characterized in that: The second mounting portion (2) comprises a second body (22) and a second annular skirt (23), wherein the second annular skirt (23) is formed at a second end (221) of the second body (22), and the second optical element (5) is connected to the second annular skirt (23); The second body (22) is provided with the external thread section (21).

6. The housing structure (101) according to any one of claims 3 to 5, characterized in that: The housing structure (101) further comprises a mounting member (7), the first optical member (4) is connected to the mounting member (7), and the mounting member (7) is mounted on the first mounting portion (1).

7. The housing structure (101) according to claim 6, characterized in that: In the first direction, the position of the mounting member (7) relative to the first mounting portion (1) is adjustable.

8. The housing structure (101) according to claim 7, characterized in that: The housing structure (101) further comprises a screw rod (71) and a nut (72); a threaded hole (14) is formed on the first mounting portion (1), a through hole (74) is formed on the mounting member (7), and the screw rod (71) passes through the through hole (74) and is threadedly connected to the threaded hole (14); The nut (72) is connected to the screw rod (71) to mount the mounting member (7) on the first mounting portion (1).

9. The housing structure (101) according to claim 8, characterized in that: The mounting member (7) is configured as a ring-shaped member; The number of the screw rods (71) and the number of the nuts (72) are both plural, and the screw rods (71) and the nuts (72) correspond one to one; A plurality of the screw rods (71) and the nuts (72) are arranged at intervals along the circumference of the mounting member (7).

10. The housing structure (101) according to claim 8 or 9, characterized in that: The shell structure (101) further comprises an elastic member (73), wherein the elastic member (73) is arranged between the first mounting portion (1) and the mounting member (7), one end of the elastic member (73) abuts against the first mounting portion (1), and the other end of the elastic member (73) abuts against the mounting member (7).

11. The housing structure (101) according to claim 10, characterized in that: The elastic member (73) is a spring, and the spring is sleeved on the screw rod (71).

12. The housing structure (101) according to any one of claims 1 to 11, characterized in that: The housing structure (101) further comprises a sealing ring (8), wherein the sealing ring (8) is arranged between the first optical component (4) and the second optical component (5), and the sealing ring (8) is used to seal the gap between the first optical component (4) and the second optical component (5); The sealing ring (8), the first optical component (4) and the second optical component (5) jointly define the containing cavity (6).

13. The housing structure (101) according to any one of claims 1 to 12, characterized in that: The shell structure (101) further comprises a liquid injection hole (9), a first end of the liquid injection hole (9) being in communication with the containing cavity (6), and the other end of the liquid injection hole (9) being suitable for being connected to the liquid injection structure (20).

14. The housing structure (101) according to any one of claims 1 to 13, characterized in that: The projection of the first optical element (4) in the first direction is a first circle, and the diameter of the first circle is greater than or equal to 50 mm; and / or, The projection of the second optical element (5) in the first direction is a second circle, and the diameter of the second circle is greater than or equal to 50 mm.

15. The housing structure (101) according to any one of claims 1 to 14, characterized in that: The first optical component (4) is a flexible optical film; The second optical component (5) is optical glass.

16. The housing structure (101) according to any one of claims 1 to 15, characterized in that: The projection of the first optical element (4) in the first direction is circular; The thickness of the first optical element (4) is unequal along a direction away from the center of the first optical element (4).

17. An optical lens (10), comprising an optical liquid (3) and a housing structure (101) of the optical lens (10) according to any one of claims 1 to 16, characterized in that: The optical liquid (3) is filled in the cavity (6).

18. An optical device (100), characterized in that It comprises a light source (30) and the optical lens (10) according to claim 17, wherein the optical lens (10) and the light source (30) are arranged along the first direction.

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