Light filtering mechanism and optical lens

Abstract

The invention discloses a light filtering mechanism and an optical lens, and relates to the technical field of optical instruments. Wherein the light filtering mechanism comprises a light filtering seat, a first mounting piece, a second mounting piece, a light filter, a polarizing film and a rotary driving piece; a cutting-in opening is formed in the light filtering seat; the first mounting piece is rotationally arranged on the light filtering seat, and a light filtering part and a polarization part are arranged on the peripheral side of a rotating shaft of the first mounting piece in a surrounding manner; the light filter is fixedly arranged on the light filtering part; the second mounting piece is rotationally arranged on the polarization part, and the polarizer is fixedly arranged on the second mounting piece; and the rotary driving piece is arranged on the light filtering seat and is in transmission connection with the second mounting piece. Based on the technical scheme disclosed by the invention, not only can the cut-in and cut-out functions of the optical filter and the polarizing film be realized, but also the rotating function of the polarizing film can be realized, and the filtering requirements of the lens on fish scale light under different postures are met, so that the observation effect is improved.

Description

Technical Field

[0001] This invention relates to the field of optical instrument technology, specifically to a filter mechanism and an optical lens. Background Technology

[0002] Currently, polarizers in optical lenses typically only have a cut-in / cut-out function. When observing specific scenes (such as sea scenes), because polarizers cannot adjust their polarization direction with changes in lens orientation, the polarization direction is relatively fixed. This prevents the lens from filtering specific light rays (such as the fish scale-like light produced by the sea surface), affecting the observation results and urgently requiring improvement. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a filtering mechanism and optical lens to solve the technical problem that the polarization direction of the polarizer is fixed in the prior art, which affects the observation effect.

[0004] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides a light filtering mechanism, comprising: A filter holder with a cutting inlet; The first mounting component is rotatably mounted on the filter base, and a filter part and a polarizing part are arranged around its rotating shaft. The filter part and the polarizing part rotate with the first mounting component and are sequentially aligned with the cut-in point. A filter is fixedly disposed in the filter section; The second mounting component is rotatably mounted on the polarizing section, and a polarizing plate is fixedly mounted thereon; and A rotation drive is disposed on the filter base and is connected to the second mounting member for driving the second mounting member to rotate on the polarizing part, so as to realize the rotation of the polarizer.

[0005] In some embodiments, the first mounting component is a filter gear, the filter gear is provided with a positioning shaft, and the filter gear is rotatably connected to the filter seat through the positioning shaft.

[0006] In some embodiments, the filter gear is an incomplete gear, and the filter portion and the polarizing portion are fixedly disposed on the periphery of the filter gear.

[0007] In some embodiments, the second mounting element is a polarizing gear, and the polarizing plate is fixedly disposed on the inner side of the polarizing gear.

[0008] In some embodiments, the polarizing gear includes: A gear portion is disposed on one side of the polarizing portion, and the polarizing plate is disposed inside it; and The connecting part is fixedly disposed on the side of the gear part near the polarization part, and is hollow inside and penetrates the polarization part, and forms a rotational engagement with the polarization part.

[0009] In some embodiments, a pressure ring is provided on the side of the polarization portion away from the gear portion, and the pressure ring is connected to the connecting portion to prevent the connecting portion from detaching from the polarization portion.

[0010] In some embodiments, the rotary drive is a polarization transition gear, which is coaxially arranged with the first mounting member and is connected to the second mounting member by gear meshing.

[0011] In some embodiments, the filtering mechanism includes an optomechanism for mounting the filter mount, the optomechanism being provided with a polarization motor assembly, the polarization motor assembly being connected to the rotation drive member for driving the rotation drive member to rotate.

[0012] In some embodiments, the filtering mechanism further includes a filtering motor assembly disposed on the optical engine, the filtering motor assembly being connected to the first mounting member for driving the first mounting member to rotate.

[0013] Secondly, the present invention provides an optical lens including the above-described filtering mechanism.

[0014] Compared with the prior art, the present invention provides a filtering mechanism and optical lens, which is provided with a first mounting member, a second mounting member and a rotation drive member on a filter base. The first mounting member is rotatably disposed and is provided with a filtering part and a polarizing part respectively. The filtering part is provided with a filter. The second mounting member is rotatably disposed in the polarizing part and is provided with a polarizing filter. The rotation drive member is connected to the second mounting member in a transmission manner and can drive the second mounting member to rotate.

[0015] In this way, the first mounting component can drive the filter section and polarizing section to rotate, so that the filter on the filter section and the polarizer at the position of the polarizing section can be aligned with the cutting entrance in sequence, realizing the cutting-in and cutting-out function of the filter and polarizer. At the same time, the rotation drive component can drive the second mounting component to rotate, realizing the polarizer rotation function, meeting the filtering requirements of the lens for fish scale light under different postures, thereby improving the observation effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the first structure of the filtering mechanism in one embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the filter gear, polarizing gear, and polarization transition gear in one embodiment of the present invention; Figure 3This is a schematic diagram of the installation structure of the filter gear, polarization gear and polarization transition gear on the filter base in one embodiment of the present invention; Figure 4 This is a schematic diagram of the second structure of the filtering mechanism in one embodiment of the present invention.

[0017] Explanation of reference numerals in the attached drawings: 1. Filter base; 11. Cut-in port; 2. Filter gear; 21. Filter section; 211. Filter mounting hole; 22. Polarizing section; 221. Polarizing mounting hole; 3. Filter; 4. Polarizing plate; 5. Positioning screw; 6. Polarizing gear; 61. Gear section; 62. Connecting section; 7. Pressure ring; 8. Polarizing transition gear; 9. Filter motor assembly; 91. Filter motor gear; 10. Polarizing motor assembly; 101. Polarizing motor gear. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0019] To address the aforementioned technical problems, this invention provides a filtering mechanism and an optical lens that can not only achieve the cutting-in and cutting-out functions of filters and polarizers, but also the polarizer rotation function, thereby meeting the lens's filtering requirements for fish-scale light under different orientations and improving the observation effect.

[0020] Please see Figure 1 This invention provides a filtering mechanism, which includes a filter base 1, a cutting entrance 11, and a first mounting component, a second mounting component, and a rotation drive component.

[0021] The first mounting component is rotatably mounted on the filter base 1, and a filter part 21 and a polarizing part 22 are respectively provided on it; the filter part 21 is provided with a filter 3, and the polarizing part 22 is rotatably mounted with the aforementioned second mounting component. A polarizing filter 4 can be provided on the second mounting component, and it is connected to the rotation drive component for transmission.

[0022] In practical applications, the first mounting component can rotate on the filter base 1. During rotation, it drives the filter section 21 and the polarizing section 22 to rotate synchronously around its axis, allowing the filter section 21 and the polarizing section 22 to align sequentially with the incision 11 on the filter base 1. Since the filter 3 and the polarizer 4 are actually disposed on the filter section 21 and the polarizing section 22 respectively, the rotation of the first mounting component enables the incision and outcision functions of the filter 3 and the polarizer 4.

[0023] At the same time, the rotation drive is connected to the second mounting component, and the polarizer 4 is mounted on the second mounting component. Therefore, the rotation drive can drive the second mounting component to rotate, thereby realizing the rotation function of the polarizer 4 so as to adjust the polarization direction of the polarizer 4.

[0024] Please see Figure 1-2 In this embodiment, the first mounting component can be a filter gear 2. A positioning screw 5 is vertically arranged on the filter gear 2. The shaft of the positioning screw 5 can form a positioning shaft, so that the filter gear 2 can rotate around the positioning shaft to achieve a rotatable connection with the filter seat 1.

[0025] Meanwhile, a filter part 21 and a polarizing part 22 are respectively provided on the periphery of the filter gear 2. The filter part 21 and the polarizing part 22 can be used to install the filter 3 and the polarizer 4 respectively, so that the filter 3 and the polarizer 4 can rotate on the filter seat 1 with the filter gear 2 and align with the cut-in 11 on the filter seat 1 in sequence.

[0026] In one embodiment, the filter gear 2 can be an incomplete gear. In this case, the filter portion 21 and the polarizing portion 22 can be integrally formed with the filter gear 2 and distributed around the periphery of the filter gear 2 with the positioning shaft as the center.

[0027] It is understandable that, since the filter 3 and the polarizer 4 can be aligned with the incision 11 in sequence, the distance between the filter part 21 and the polarizer 22 on the filter gear 2 and the positioning shaft is the same, that is, the centers of the filter part 21 and the polarizer 22 can be distributed on the same circumference with the positioning shaft as the center.

[0028] In one embodiment, a filter mounting hole 211 can be formed through the filter part 21 to install the filter 3. In this case, the filter 3 can be glued and fixed to the inside of the filter mounting hole 211 to avoid obstructing the filter 3.

[0029] In this embodiment, the second mounting member is disposed on the polarizing part 22, and the polarizer 4 can be disposed on the second mounting member, so that the polarizer 4 can move synchronously with the second mounting member. Specifically, the second mounting member can be a polarizing gear 6, which is rotatably connected to the polarizing part 22, and the polarizer 4 can be fixedly disposed on the polarizing gear 6.

[0030] In one embodiment, please refer to Figure 3 To facilitate the installation of the aforementioned polarizing gear 6, a polarizing plate mounting hole 221 is provided through the polarizing part 22.

[0031] At this time, the polarizing gear 6 may include a gear portion 61 and a connecting portion 62. The gear portion 61 is disposed on the side of the polarizing portion 22 near the filter base 1, and the polarizer 4 can be bonded and fixed to the inner side of the gear portion 61. The connecting portion 62 may be configured as a hollow cylindrical structure, which is fixedly connected to the side of the gear portion 61 near the polarizing portion 22, while the side away from the gear portion 61 can pass through the polarizing portion 22 through the aforementioned polarizer mounting hole 221 and form a rotational engagement with the polarizing portion 22.

[0032] Meanwhile, a pressure ring 7 can be provided on the side of the polarizing part 22 away from the gear part 61. The pressure ring 7 can be threaded or fastened to the side of the connecting part 62 that passes through the polarizing plate mounting hole 221, thereby restricting the connecting part 62 from detaching from the polarizing part 22, so as to ensure the stability and accuracy of the polarizing gear 6 installation.

[0033] In the above manner, the polarizing gear 6 can rotate with the filter gear 2. During this process, the polarizing plate 4 can be aligned with the cutting entrance 11 or moved away from the cutting entrance 11, thereby realizing the cutting-in and cutting-out function of the polarizing plate 4.

[0034] Please see Figure 2-3 In this embodiment, the aforementioned rotating drive component is disposed on the filter base 1 and can be connected to the aforementioned polarizing gear 6 for transmission, thereby driving the polarizing gear 6 to rotate in the polarizing section 22 to realize the rotation function of the polarizer 4.

[0035] Specifically, the rotary drive component can be a polarization transition gear 8. The polarization transition gear 8 can be disposed on the side of the filter gear 2 near the filter base 1 and can be coaxially disposed with the filter gear 2. That is, the polarization transition gear 8 can also be disposed on the aforementioned positioning shaft and can be rotatably connected to the filter base 1 through the positioning shaft. In addition, the polarization transition gear 8 also meshes with the aforementioned polarization gear 6 to achieve a transmission effect.

[0036] It is understandable that when the filter gear 2 rotates, the filter gear 2 can drive the polarizing gear 6 to rotate around the above-mentioned positioning axis to realize the cutting-in and cutting-out function of the polarizing sheet 4; during this process, since the polarizing gear 6 meshes with the polarizing transition gear 8, the polarizing gear 6 will also rotate on its own.

[0037] When the polarization transition gear 8 rotates, the filter gear 2 remains stationary. The polarization transition gear 8 can drive the polarization gear 6 that meshes with it to rotate, thereby indirectly driving the polarizer 4 to rotate, so as to realize the rotation function of the polarizer 4.

[0038] In one embodiment, the filtering mechanism further includes an optical engine, which can be used to mount the aforementioned filter holder 1.

[0039] Specifically, such as Figure 4As shown, after the filter gear 2, polarizing gear 6, polarizing filter gear, filter 3, and polarizing filter 4 are assembled on the filter holder 1, the filter holder 1 can be installed into the optical engine. The optical engine is equipped with a filter motor assembly 9 and a polarizing motor assembly 10, which can be used to drive the filter gear 2 and the polarizing transition gear 8 to rotate, respectively.

[0040] The filter motor assembly 9 includes a filter motor and a filter motor gear 91. The filter motor is fixedly mounted on the optical engine, and the filter motor gear 91 can mesh with the filter gear 2 to realize the transmission between the filter motor and the filter gear 2.

[0041] Similarly, the polarization motor assembly 10 includes a polarization motor and a polarization motor gear 101. The polarization motor is fixedly mounted on the optomechanical unit, and the polarization motor gear 101 can mesh with the aforementioned polarization transition gear 8 to realize the transmission between the polarization motor and the polarization transition gear 8.

[0042] In the above manner, the filter motor can drive the filter gear 2 to rotate through the filter motor gear 91, thereby driving the polarizer 4 and the filter 3 to move, so as to realize the cutting-in and cutting-out function; the polarization motor can drive the polarization transition gear 8 to rotate through the polarization motor gear 101. The polarization transition gear 8 meshes with the polarization gear 6, so it can further drive the polarization gear 6 to rotate, so as to realize the function of rotating the polarizer 4.

[0043] It should be noted that when the filter gear 2 is driven to rotate in the positive direction along the positioning axis by the filter motor assembly 9, the polarization transition gear 8 does not move due to the self-locking of the polarization motor, and the polarization gear 6 rotates in the positive direction around the above positioning axis, so that the polarizer 4 can be cut out of the optical engine.

[0044] When the filter motor assembly 9 drives the filter gear 2 to rotate in the opposite direction along the positioning axis, the polarization transition gear 8 remains stationary, and the polarization gear 6 as a whole can rotate in the opposite direction around the aforementioned positioning axis. The polarizer 4 can then be inserted into the optical engine. Since the rotation angle of the polarization gear 6 is the same when it is inserted and when it is cut out, the polarization angle will not change when it is inserted again.

[0045] When the polarizer 4 is engaged, the polarizing transition gear 8 can be driven by the polarizing motor assembly 10 to rotate around the positioning shaft in the forward or reverse direction. Under the meshing action of the gears, the polarizing gear 6 will rotate, that is, it can rotate around the center of the polarizer 4 in the forward or reverse direction, thereby changing the angle of the polarizer 4. At the same time, due to the self-locking of the filter motor and the fit clearance between the polarizing transition gear 8 and the filter gear 2, the rotation of the polarizer 4 will not affect the position of the filter gear 2.

[0046] Based on the above-described filtering mechanism, this embodiment of the invention also provides an optical lens, which includes an optical system and the above-described filtering mechanism. The optical system can adopt an existing optical system structure, which may include an objective lens group, a focusing lens group, a light shield, a reflecting mirror group, etc., which will not be described in detail here.

[0047] By applying the above-mentioned filtering mechanism to the optical lens, the filter 3 and polarizer 4 on the optical lens can simultaneously have the function of cutting in and cutting out. In addition, the polarizer 4 also has a separate rotation function, which makes it convenient to adjust the polarization direction of the polarizer 4, thereby improving the observation effect of the optical lens.

[0048] To better understand this invention, the following is combined with... Figure 1-4 The technical solutions of the embodiments of the present invention will be described in detail below: In this embodiment, the polarizer 4 can be bonded to the inner side of the polarizing gear 6, and other filters 3 can be bonded to the filtering part 21 on the filtering gear 2. During assembly, the pressure ring 7 can be used to install the polarizing gear 6 onto the polarizing part 22 on the filtering gear 2. Then, the positioning shaft can be used to set the polarizing transition gear 8 on the filter base 1, and then the filtering gear 2 is installed on the positioning shaft and fixed with the positioning screw 5, ensuring that the filtering gear 2 can rotate freely around the center of the positioning shaft. Finally, the filter base 1 is installed into the optical engine, and the filtering motor assembly 9 and the polarizing motor assembly 10 are installed.

[0049] Based on the above settings, when the filter gear 2 is driven to rotate in the forward direction along the positioning axis by the filter motor group 9, the polarization transition gear 8 remains stationary due to the self-locking of the polarization motor, and the polarization gear 6 rotates in the forward direction around the positioning axis as a whole, so that the polarizer 4 can be cut out of the optical engine.

[0050] When the filter motor assembly 9 drives the filter gear 2 to rotate in the opposite direction along the positioning axis, the polarization transition gear 8 remains stationary, and the polarization gear 6 as a whole can rotate in the opposite direction around the aforementioned positioning axis. The polarizer 4 can then be inserted into the optical engine. Since the rotation angle of the polarization gear 6 is the same when it is inserted and when it is cut out, the polarization angle will not change when it is inserted again.

[0051] When the polarizer 4 is engaged, the polarizing transition gear 8 can be driven by the polarizing motor assembly 10 to rotate around the positioning shaft in the forward or reverse direction. Under the meshing action of the gears, the polarizing gear 6 will rotate, that is, it can rotate around the center of the polarizer 4 in the forward or reverse direction, thereby changing the angle of the polarizer 4. At the same time, due to the self-locking of the filter motor and the fit clearance between the polarizing transition gear 8 and the filter gear 2, the rotation of the polarizer 4 will not affect the position of the filter gear 2.

[0052] In the description of this application, it should be noted that the terms "upper" and "lower," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0053] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0054] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A filtering mechanism, characterized in that, include: A filter holder with a cutting inlet; The first mounting component is rotatably mounted on the filter base, and a filter part and a polarizing part are arranged around its rotating shaft. The filter part and the polarizing part rotate with the first mounting component and are sequentially aligned with the cut-in point. A filter is fixedly disposed in the filter section; The second mounting component is rotatably mounted on the polarizing section, and a polarizing plate is fixedly mounted thereon; and A rotation drive is disposed on the filter base and is connected to the second mounting member for driving the second mounting member to rotate on the polarizing part, so as to realize the rotation of the polarizer.

2. The filtering mechanism according to claim 1, characterized in that, The first mounting component is a filter gear, which is provided with a positioning shaft. The filter gear is rotatably connected to the filter base through the positioning shaft.

3. The filtering mechanism according to claim 2, characterized in that, The filter gear is an incomplete gear, and the filtering part and the polarizing part are fixedly disposed on the periphery of the filter gear.

4. The filtering mechanism according to claim 1, characterized in that, The second mounting component is a polarizing gear, and the polarizing plate is fixedly disposed on the inner side of the polarizing gear.

5. The filtering mechanism according to claim 4, characterized in that, The polarization gear includes: A gear portion is disposed on one side of the polarizing portion, and the polarizing plate is disposed inside it; and The connecting part is fixedly disposed on the side of the gear part near the polarization part, and is hollow inside and penetrates the polarization part, and forms a rotational engagement with the polarization part.

6. The filtering mechanism according to claim 5, characterized in that, A pressure ring is provided on the side of the polarization section opposite to the gear section. The pressure ring is connected to the connecting section and is used to prevent the connecting section from detaching from the polarization section.

7. The filtering mechanism according to claim 1, characterized in that, The rotary drive component is a polarization transition gear, which is coaxially arranged with the first mounting component and is connected to the second mounting component through gear meshing.

8. The filtering mechanism according to claim 1, characterized in that, The filtering mechanism includes an optomechanism for mounting the filter base, and a polarization motor assembly is provided on the optomechanism. The polarization motor assembly is connected to the rotation drive component for driving the rotation drive component to rotate.

9. The filtering mechanism according to claim 8, characterized in that, The filtering mechanism further includes a filtering motor assembly mounted on the optical engine. The filtering motor assembly is connected to the first mounting component for driving the first mounting component to rotate.

10. An optical lens, characterized in that, Includes the filtering mechanism as described in any one of claims 1-9.

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