Optical system and optical system assembly method

Abstract

The invention discloses an optical system and an optical system assembling method. The optical system comprises a focusing assembly and an adjusting assembly. The focusing assembly comprises a fixing piece and a plurality of reference pieces, a plurality of light holes are formed in the fixing piece, the light holes penetrate through the fixing piece, and each reference piece is arranged in one light hole and corresponds to the light hole, so that a preset angle is formed between light paths passing through the reference pieces, and the light paths are focused on a preset focus; the adjusting assembly comprises a plurality of adjusting parts, the adjusting parts are in one-to-one correspondence with the reference parts respectively and are arranged outside the fixing part, each adjusting part comprises an adjusting lens, and the adjusting lens is arranged on the light path where the corresponding reference part is located. The optical system performs high-precision positioning on one end, close to the preset focus, of the light path, so that the alignment precision of the multiple light paths can be improved, and the optical system is convenient to install and adjust.

Description

Technical Field

[0001] The present application belongs to the field of optical technology, and in particular, relates to an optical system and an optical system assembly method. Background Art

[0002] In an optical system, when illumination or detection is required from multiple angles, it is often necessary to build optical paths at multiple angles at the same time, and their respective fields of view need to be fully aligned to ensure that the illumination / imaging area is consistent. For micron-level or even higher precision requirements, multi-view alignment becomes a key difficulty in optical path adjustment.

[0003] In the related art, when realizing the alignment of multi-view optical paths, a lens barrel tooling is first designed for each optical path, and then the angles and distances between different lens barrel toolings are adjusted, and finally the multiple optical paths are fixed. However, when the lens barrel is large and heavy (for example, the lens barrel is tens of centimeters long and weighs tens of kilograms), it is extremely difficult to make high-precision adjustments to the lens barrel. Summary of the invention

[0004] The embodiments of the present application provide an optical system and an optical system assembly method. The optical system is easy to assemble and adjust, and can achieve high-precision alignment of multi-view optical paths.

[0005] In the first aspect, an embodiment of the present application provides an optical system, which includes a focusing component and an adjustment component, wherein the focusing component includes a fixed part and a plurality of reference parts, the fixed part is provided with a plurality of light-transmitting holes, the light-transmitting holes pass through the fixed part, each of the reference parts is arranged in one of the light-transmitting holes and corresponds to the light-transmitting holes respectively, so that a predetermined angle is formed between the light paths passing through each of the reference parts and focused on a predetermined focus; the adjustment component includes a plurality of adjustment parts, the plurality of adjustment parts respectively correspond one-to-one to the plurality of reference parts and are arranged on the outside of the fixed part, each of the adjustment parts includes an adjustment lens, and the adjustment lens is arranged on the light path where the corresponding reference part is located.

[0006] Optionally, the axes of adjacent reference members form the predetermined angle and intersect at one point, so that the light path passing through each reference member is focused on the predetermined focus.

[0007] Optionally, the reference member is an optical lens, the reference member is detachably connected to the light-transmitting hole, and the adjusting member is detachably connected to the reference member or the light-transmitting hole.

[0008] Optionally, the reference member is an optical lens, a slot is provided in the light-transmitting hole, and the optical lens is snapped into the slot; in each of the light-transmitting holes, there is one optical lens and one slot; or there are multiple optical lenses and multiple slots, the optical lenses are snapped into the slots one by one, and the multiple optical lenses are coaxially arranged.

[0009] Optionally, the reference member includes a cylinder and an adjusting button, wherein the cylinders are multiple and are arranged in sequence along the optical path in the light-transmitting hole, each of the cylinders has an optical lens, and the adjusting button is threadedly connected to the fixing member. The reference member is multiple, and one end of each adjusting button extends into the light-transmitting hole and abuts against one of the cylinders to adjust the coaxiality of the cylinder abutting therewith and the adjacent cylinder.

[0010] Optionally, among the plurality of the barrels, the outer diameter of the first end of at least one of the barrels is smaller than the outer diameter of the second end, and the optical lens is mounted on the first end, and the adjustment button abuts against the side wall of the second end.

[0011] Optionally, the reference member further includes an adjustment ring, which is installed in the light-transmitting hole and abuts against the outer wall surface of the side wall at the second end, and one end of the adjustment button abuts against the outer wall surface of the adjustment ring.

[0012] Optionally, the adjustment assembly also includes a lens barrel, which extends along the optical path. The adjustment lens is located in the lens barrel. There are multiple adjustment lenses and they are arranged in sequence along the lens barrel. Correction parts are provided between adjacent adjustment lenses to adjust the coaxiality of adjacent adjustment lenses.

[0013] In a second aspect, an embodiment of the present application provides an optical system assembly method, which includes providing a fixing member having a plurality of light-transmitting holes; arranging a plurality of reference members in the light-transmitting holes and respectively corresponding to the light-transmitting holes to obtain a focusing assembly, wherein a predetermined angle is formed between the light paths passing through each of the reference members and focused on one point; and connecting an adjustment lens to the outside of the focusing assembly and respectively corresponding to the plurality of light-transmitting holes to obtain an optical system.

[0014] Optionally, the step of obtaining the focusing assembly includes fixing or adjustably placing a plurality of optical lenses in the light-transmitting hole in sequence to form the reference member.

[0015] The embodiments of the present application provide an optical system and an optical system assembly method, wherein the optical system includes a focusing component and an adjustment component, wherein the focusing component includes a fixing member and a plurality of reference members, and the fixing member is provided with a plurality of light-transmitting holes; and the adjustment component includes a plurality of adjustment members. Each reference member is correspondingly installed in a light-transmitting hole of the fixing member, and the adjustment member is installed along the corresponding optical path. The optical system can improve the alignment accuracy of multiple optical paths by performing high-precision positioning of the end of the optical path that is close to the predetermined focus; and when installing the adjustment member, the adjustment lenses of the adjustment member can be installed one by one without moving the entire adjustment member, which can be conveniently operated and easy to install and adjust. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 A schematic diagram of an optical system provided in some embodiments of the present application;

[0018] Figure 2 A schematic diagram of a fixing member provided in some embodiments of the present application;

[0019] Figure 3 Schematic diagrams of fixing members provided in other embodiments of the present application;

[0020] Figure 4 A schematic diagram of a reference member provided in some embodiments of the present application;

[0021] Figure 5 A flowchart of an optical system assembly method provided in some embodiments of the present application.

[0022] In the attached picture:

[0023] 1-focusing assembly; 11-fixing member; 111-light transmission hole; 1111-card slot; 12-reference member; 121-optical lens; 122-optical lens; 123-barrel; 124-adjusting knob; 125-adjusting ring;

[0024] 2-adjustment assembly; 21-adjustment member; 211-adjustment lens; 212-optical path element; 22-lens barrel. DETAILED DESCRIPTION

[0025] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0027] In some fields, it is often necessary to observe or illuminate from different perspectives. For example, in the semiconductor field, optical systems are often required to implement illumination or detection from multiple angles. At this time, it is often necessary to carry optical paths at multiple angles at the same time, and the fields of view of each optical path need to be fully aligned to ensure that the illumination / imaging area is consistent. For micron-level or even higher precision requirements, multi-perspective alignment becomes a key difficulty in optical path adjustment.

[0028] In related technologies, the main method for ensuring the alignment of multi-view optical paths is to build multiple optical paths separately, assemble multiple optical lenses and other components in each optical path first, and then adjust them individually according to the actual lighting / imaging effects to achieve consistency. When building each optical path, tooling such as lens barrels are usually designed separately, and then the angles and distances between the lens barrels are adjusted to fix the multiple optical paths. However, when the lens barrels are large and bulky, it is extremely difficult to achieve high-precision adjustment.

[0029] The inventors have found that when high-precision alignment of multiple optical paths in three-dimensional space is performed, the optical lens closest to the predetermined focus in each optical path has the highest requirements for installation and adjustment accuracy. Compared with other optical lenses, the optical impact caused by the accuracy and deviation of this optical lens exceeds one order of magnitude. Therefore, the key to high-precision alignment of multiple optical paths in three-dimensional space is to control the optical lens closest to the predetermined focus in each optical path.

[0030] In view of this, the present application provides an optical system and an optical system assembly method.

[0031] Please refer to Figures 1 to 4 , Figure 1 A schematic diagram of an optical system provided in some embodiments of the present application; Figure 2 A schematic diagram of a fixing member provided in some embodiments of the present application; Figure 3 Schematic diagrams of fixing members provided in other embodiments of the present application; Figure 4 Schematic diagram of a reference member provided in some embodiments of the present application. In order to show the internal structure, Figures 1 to 4 All are cross-sectional views.

[0032] First, as Figure 1 As shown, an embodiment of the present application provides an optical system, which includes a focusing component 1 and an adjustment component 2. The focusing component 1 includes a fixing member 11 and a plurality of reference members 12. The fixing member 11 is provided with a plurality of light-transmitting holes 111, and the light-transmitting holes 111 penetrate the fixing member 11. Each reference member 12 is arranged in a light-transmitting hole 111 and corresponds to the light-transmitting hole 111, so that a predetermined angle θ is formed between the light paths passing through each reference member 12 and focused on a predetermined focus. The adjustment component 2 includes a plurality of adjustment members 21, and the plurality of adjustment members 21 correspond one-to-one to the plurality of reference members 12 and are arranged outside the fixing member 11. Each adjustment member 21 includes an adjustment lens 211, and the adjustment lens 211 is arranged on the light path where the corresponding reference member 12 is located.

[0033] In the optical system, the reference member 12 and the corresponding adjustment member 21 are on the same optical path. The fixing member 11 is used to provide high-precision positioning. A plurality of light-transmitting holes 111 are provided on the fixing member 11. Each light-transmitting hole 111 is processed according to the predetermined viewing angle direction as required, and the axes of adjacent light-transmitting holes 111 form a predetermined angle θ. When the reference member 12 is correspondingly installed in the light-transmitting hole 111, each reference member 12 is fixed according to the predetermined viewing angle, and the light paths passing through each reference member 12 can form a predetermined angle θ and focus on a predetermined focus. The adjustment member 21 is installed on the optical path corresponding to the reference member 12. When on the optical path, the adjustment member 21 may include one adjustment lens 211 or multiple adjustment lenses 211.

[0034] When installing the optical system, taking an optical path as an example, first install the reference member 12 in the light-transmitting hole 111 of the fixing member 11, and then complete the connection between the adjusting member 21 and the light-transmitting hole 111 and / or the reference member 12. When assembling the adjusting member 21, if the adjusting member 21 includes multiple adjusting lenses 211, the multiple lenses are installed in sequence, for example, the first adjusting lens 211 can be installed on the reference member 12 and / or on the light-transmitting hole 111, the second adjusting lens 211 is directly or indirectly installed on the first adjusting lens 211, the third adjusting lens 211 is directly or indirectly installed on the second adjusting lens 211, and so on. All reference members 12 and the corresponding adjusting members 21 can be installed simultaneously or in sequence.

[0035] like Figure 2 As shown, the fixing member 11 can be integrally formed, and a plurality of light-transmitting holes 111 are formed on the fixing member 11. Exemplarily, each light-transmitting hole 111 can be formed on the fixing member 11 by machining according to a predetermined viewing angle. The fixing member 11 can also be formed by 3D printing, and the light-transmitting holes 111 are formed on the fixing member 11 when the fixing member 11 is formed.

[0036] like Figure 3 As shown, the fixing member 11 can also be a split structure. For example, the fixing member 11 includes a plurality of spliced ​​mounting parts, each of which can be provided with one or more light-transmitting holes 111, and a plurality of mounting parts can be spliced ​​to form the fixing member 11. The splicing scheme of the mounting parts can be a snap-on connection between adjacent mounting parts, a connection through bolts and guide columns, a welding connection, etc.

[0037] When the fixing member 11 is a split structure, each mounting portion can be an integrally formed structure or an assembled structure. Exemplarily, the mounting portion can include a tube body and a bracket, a light-transmitting hole 111 is formed in the tube body, and the bracket supports the tube body to provide precise positioning for the light-transmitting hole 111 in the tube body.

[0038] When the fixing member 11 is a split structure, adjacent mounting parts are not limited to being non-adjustable after splicing. For example, among the multiple mounting parts included in the fixing member 11, at least two mutually adjacent mounting parts can be hingedly connected and can be fixed at different angle values, so as to flexibly adapt to different predetermined angles θ.

[0039] As a component of the focusing assembly 1, the fixing member 11 cooperates with the reference member 12 to realize high-precision positioning of the end of the optical path close to the predetermined focus, and finally makes multiple optical paths converge at the predetermined focus. The overall profile of the fixing member 11 can be set according to the distribution of the light-transmitting holes 111. For example, the fixing member 11 can be arc-shaped, and the predetermined focus can be located on the side where the arc center of the fixing member 11 is located. The fixing member 11 can also be annular, surrounding 360° outside the predetermined focus.

[0040] On the fixing member 11, the axis of the light-transmitting hole 111 coincides with the optical path, and the axes of adjacent light-transmitting holes 111 form a predetermined angle θ. The number of light-transmitting holes 111 may be two or more. When the number of light-transmitting holes 111 is two or more, the axes of any three adjacent light-transmitting holes 111 may be in the same plane or in different planes. The values ​​of any two predetermined angles θ may be equal or unequal. Exemplarily, there may be three light-transmitting holes 111, with adjacent light-transmitting holes 111 forming an angle of 45°. There may also be eight light-transmitting holes 111, arranged in a circular array at 360°.

[0041] The reference part 12 is arranged in the light-transmitting hole 111. The reference part 12 may be installed in the light-transmitting hole 111 and fixedly connected to the light-transmitting hole 111 and cannot be disassembled. For example, the reference part 12 is pressed into the light-transmitting hole 111 by interference fit and fixed in the light-transmitting hole 111 by spot welding. Alternatively, the reference part 12 may be installed in the light-transmitting hole 111 and detachably connected to the light-transmitting hole 111. For example, the reference part 12 is installed in the light-transmitting hole 111 by threaded connection, and an external thread is arranged on the reference part 12, and an internal thread is arranged in the light-transmitting hole 111. The reference part 12 is used to provide an installation reference for the adjusting part 21. At least one optical lens 122 may be arranged on the reference part 12. The optical lens 122 may not be arranged on the reference part 12. When the optical lens 122 is not arranged, the adjusting part 21 is connected to the reference part 12, and can also provide a reference for the adjusting part 21.

[0042] The adjustment component 2 includes a plurality of adjustment members 21. The number of the adjustment members 21 is consistent with the number of optical paths. An adjustment member 21 is provided on each optical path. The adjustment member 21 includes one or more adjustment lenses 211. When there are multiple adjustment lenses 211, the adjacent adjustment lenses 211 can be adjusted. The adjustment member 21 may also include an optical path element 212. The optical path element 212 may be a light source, which forms an optical path by irradiation; the optical path element 212 may be a camera, which can take pictures along the optical path; the optical path element 212 may also include a light source and a camera at the same time. The adjustment member 21 may also only include one or more adjustment lenses 211 to form an optical path channel.

[0043] In the technical solution of the above embodiment, the optical system is provided with a fixing member 11 and a plurality of reference members 12, the plurality of reference members 12 are correspondingly installed in the light-transmitting holes 111 of the fixing member 11, and the adjusting member 21 is installed along the corresponding optical path. By high-precision positioning of the end of the optical path close to the predetermined focus, the alignment accuracy of the plurality of optical paths can be improved; and when installing the adjusting member 21, the adjusting lenses 211 of the adjusting member 21 can be installed one by one, without moving the entire adjusting member 21, which is convenient for operation and installation.

[0044] In some embodiments of the present application, Figure 1As shown, the axes of adjacent reference members 12 form a predetermined angle θ and intersect at one point, so that the light path passing through each reference member 12 is focused at a predetermined focus.

[0045] When the reference part 12 is installed in the light-transmitting hole 111, the axes of adjacent reference parts 12 form a predetermined angle, and the axes of all reference parts 12 focus on one point (the predetermined focus). Using the reference part 12 as the alignment reference, the light path passing through each reference part 12 can be focused on the predetermined focus.

[0046] In the technical solution of the above embodiment, focusing of multiple light paths is achieved by controlling the axes of multiple reference members 12 to intersect at one point, which can provide an alignment reference (alignment along the axis of the reference member 12 itself) and further improve the alignment accuracy.

[0047] In the present application, the reference member 12 can have various designs.

[0048] In some embodiments of the present application, the reference member 12 is an optical lens 121 , the reference member 12 is detachably connected to the light-transmitting hole 111 , and the adjustment member 21 is detachably connected to the reference member 12 or the light-transmitting hole 111 .

[0049] The reference part 12 is an optical lens 121. When the reference part 12 is installed in the light-transmitting hole 111, high-precision positioning of the optical lens 121 closest to the predetermined focus in the optical path is directly achieved. The reference part 12 is detachably connected to the light-transmitting hole 111, for example, it can be a threaded connection or a snap-on connection. The adjusting part 21 can be connected to the reference part 12 or to the light-transmitting hole 111, and a detachable connection is also adopted when connecting. When the reference part 12 is detachably installed and the adjusting part 21 is detachably installed, the detachable forms of the two can be the same or different. When the reference part 12 is an optical lens 121, the optical lens 121 can have the same parameters as the adjusting lens 211, or it can have different parameters from the adjusting lens 211.

[0050] In the technical solution of the above embodiment, the reference member 12 is an optical lens 121, which can realize high-precision positioning of the optical lens 121 closest to the predetermined focus in the optical path, thereby improving the positioning accuracy. The reference member 12 and the adjustment member 21 are both installed in a detachable connection form, which is convenient for disassembly and replacement, thereby improving the utilization rate of the fixing member 11, increasing the scope of application, and facilitating the adjustment and replacement of the optical lens 121 and the adjustment lens 211 in each optical path.

[0051] In some embodiments of the present application, Figure 2As shown, the reference part 12 is an optical lens 122, and a slot 1111 is provided in the light-transmitting hole 111, and the optical lens 122 is snapped into the slot 1111; in each light-transmitting hole 111, there is one optical lens 122 and one slot 1111; or there are multiple optical lenses 122 and multiple slots 1111, and the optical lenses 122 are snapped into the slots 1111 one by one, and multiple optical lenses 122 are coaxially arranged.

[0052] When the slot 1111 is provided in the light-transmitting hole 111, the slot 1111 is recessed into the wall of the light-transmitting hole 111 (spread toward the periphery of the light-transmitting hole 111), for example, the wall of the light-transmitting hole 111 can be cut to form the slot 1111. The diameter of the slot 1111 is greater than the diameter of the light-transmitting hole 111, the slot 1111 can be annular, and the axis of the slot 1111 coincides with the axis of the light-transmitting hole 111. When the optical lens 122 is installed in the slot 1111, the axis of the optical lens 122 coincides with the axis of the light-transmitting hole 111.

[0053] When the reference part 12 is an optical lens 122 and a card slot 1111 is set in the light-transmitting hole 111, when the optical lens 122 is directly installed in the light-transmitting hole 111, a plurality of separation parts can be set on the fixing part 11 along the axis of the light-transmitting hole 111, and the separation parts can be separated from the main body of the fixing part 11, and the separation parts can be installed on the main body after the optical lens 122 is filled.

[0054] In the technical solution of the above embodiment, the optical system directly installs the optical lens 122 into the light-transmitting hole 111 during installation and adjustment, so as to achieve high-precision installation of the optical lens 122. In particular, when the reference member 12 is a plurality of optical lenses 122, coaxial installation and adjustment of the plurality of optical lenses 122 can be achieved. The subsequent adjustment member 21 can be directly installed in the light-transmitting hole 111, and the adjustment lens 211 adjusts its own axis according to the optical lens 122 to ensure that the coaxiality between the adjustment lenses 211 and between the adjustment lens 211 and the optical lens 122 on the optical path meets the requirements.

[0055] In some embodiments of the present application, Figure 3 As shown, the reference member 12 includes a cylinder 123 and an adjusting button 124. There are multiple cylinders 123 and they are arranged in sequence along the light path in the light-transmitting hole 111. Each cylinder 123 has an optical lens 122. The adjusting button 124 is threadedly connected to the fixing member 11. There are multiple adjusting buttons 124. One end of each adjusting button 124 extends into the light-transmitting hole 111 and abuts against a cylinder 123 to adjust the coaxiality of the cylinder 123 abutting therewith and the adjacent cylinder 123.

[0056] The multiple cylinders 123 of the reference part 12 are sequentially filled into the light-transmitting hole 111 along the axis of the light-transmitting hole 111, and adjacent cylinders 123 may or may not be in contact with each other. An optical lens 122 is installed in the cylinder 123, and the number of optical lenses 122 in each cylinder 123 is at least one, and the number of optical lenses 122 in different cylinders 123 may be the same or different. When the cylinder 123 is installed in the light-transmitting hole 111, an adjustment margin may be left in the circumferential direction of the cylinder 123 (for example, the cylinder 123 may have a clearance fit with the light-transmitting hole 111, or even a transition fit). A threaded hole may be provided on the fixing part 11, and the threaded hole is in communication with the light-transmitting hole 111, and the axis of the threaded hole intersects with the axis of the light-transmitting hole 111. The adjusting button 124 is installed in the threaded hole, and one end of the adjusting button 124 passes through the threaded hole and extends into the light-transmitting hole 111 to abut against a cylinder 123 . The cylinder 123 can be fine-tuned by squeezing the adjusting button 124 , thereby adjusting the coaxiality of multiple cylinders 123 .

[0057] Each adjusting button 124 abuts against a cylinder 123, and a single cylinder 123 is not limited to abutting against one adjusting button 124. For the adjustment of a single cylinder 123, one adjusting button 124, two adjusting buttons 124, or even more than two adjusting buttons 124 can be provided. When a single cylinder 123 is provided with multiple adjusting buttons 124, the multiple adjusting buttons 124 can be provided along the circumferential direction of the cylinder 123. Among the multiple cylinders 123 of the reference member 12, each cylinder 123 can be adjusted, or at least one cylinder 123 does not abut against the adjusting button 124, and the cylinder 123 cannot be adjusted.

[0058] In the technical solution of the above embodiment, the reference part 12 is set as a plurality of cylinders 123 along the axial direction of the light-transmitting hole 111 and is equipped with an adjustment button 124, so that the reference part 12 itself can be adjusted and each optical lens 122 can be concentrically adjusted to reduce the interference of assembly errors, processing errors, etc. on the accuracy, thereby improving the alignment accuracy of the multi-view optical path.

[0059] In some embodiments of the present application, Figure 3 As shown, among the multiple cylinders 123, the outer diameter of the first end of at least one cylinder 123 is smaller than the outer diameter of the second end, and the optical lens 122 is installed on the first end, and the adjustment button 124 abuts against the side wall of the second end.

[0060] In the reference member 12, the outer diameter of the first end of one cylinder 123 may be smaller than the outer diameter of the second end, or the outer diameter of the first end of multiple cylinders 123 may be smaller than the outer diameter of the second end, or the outer diameter of the first end of all cylinders 123 may be smaller than the outer diameter of the second end. The first ends of multiple cylinders 123 may face the same direction (for example, the first end of each cylinder 123 is the end of the cylinder 123 away from the predetermined focus or the end close to the predetermined focus), or may face different directions (for example, the first end of a part of the cylinders 123 is the end of the cylinder 123 away from the predetermined focus, and the first end of another part of the cylinders 123 is the end of the cylinder 123 close to the predetermined focus), and the cylinders 123 do not interfere with each other. When adjusting the cylinder 123, the adjusting knob 124 squeezes the side wall of the second end, and the cylinder 123 can be adjusted by adjusting the squeezing amount.

[0061] In the technical solution of the above embodiment, the optical lens 122 is installed at the first end of the barrel 123, and the adjustment button 124 is in contact with the side wall of the second end of the barrel 123. When the adjustment button 124 adjusts the barrel 123, it does not directly act on the end where the optical lens 122 is located, but transfers the adjustment effect to the end where the optical lens 122 is located, so that the adjustment is more precise. In the barrel 123, the outer diameter of the first end is smaller than the outer diameter of the second end, which can not only prevent the light-transmitting hole 111 from directly contacting the first end and affecting the optical lens 122, but also realize the interlaced arrangement of multiple barrels 123 (that is, the first end of a barrel 123 can extend into the second end of the adjacent barrel 123), so that the reference member 12 can be flexibly arranged in the light-transmitting hole 111.

[0062] In some embodiments of the present application, Figure 3 As shown, the reference member 12 further includes an adjustment ring 125 , which is installed in the light-transmitting hole 111 and abuts against the outer wall surface of the side wall at the second end, and one end of the adjustment button 124 abuts against the outer wall surface of the adjustment ring 125 .

[0063] When the reference member 12 is installed in the light-transmitting hole 111, the adjustment ring 125 may be located between the light-transmitting hole 111 and the cylinder 123. The adjustment ring 125 may surround the outer side of the two cylinders 123 near each other, or the adjustment ring 125 may surround the outer side of multiple cylinders 123. During installation, the adjustment ring 125 may be installed in the light-transmitting hole 111, and at least one cylinder 123 may be installed in the adjustment ring 125. When the cylinder 123 is connected to the adjustment ring 125, the cylinder 123 may be installed on the adjustment ring 125 by threaded connection, or the cylinder 123 may be installed on the adjustment ring 125 by bolted connection. The adjustment ring 125 may be made of a deformable material, such as a thermoplastic elastomer.

[0064] The adjustment ring 125 may be integrally formed or a split structure. For example, the adjustment ring 125 may be divided into a plurality of adjustment sections along its own axis, and adjacent adjustment sections may be threadedly connected to adjust its own length.

[0065] When adjusting the cylinder 123 , the adjusting button 124 squeezes the outer wall of the adjusting ring 125 , causing the adjusting ring 125 to deform, thereby causing the cylinder 123 connected thereto to move slightly (eg, micrometer level), so that the cylinder 123 can be adjusted.

[0066] In the technical solution of the above embodiment, the reference member 12 is provided with an adjustment ring 125. When adjusting the cylinder 123, the adjustment of the cylinder 123 is achieved by squeezing the adjustment ring 125 through the adjustment button 124, which can avoid direct contact between the adjustment button 124 and the cylinder 123. Not only can more precise adjustment be achieved, but also the adjustment button 124 can be prevented from damaging the cylinder 123.

[0067] In some embodiments of the present application, Figure 1 As shown, the adjustment component 2 also includes a lens barrel 22, which extends along the optical path. The adjustment lens 211 is located in the lens barrel 22. There are multiple adjustment lenses 211 and they are arranged in sequence along the lens barrel 22. Correction parts are provided between adjacent adjustment lenses 211 to adjust the coaxiality of adjacent adjustment lenses 211.

[0068] The adjustment assembly 2 may include a plurality of lens barrels 22, and the adjustment members 21 correspond to the lens barrels 22 one by one. There may also be one lens barrel 22, or the number of lens barrels 22 may be less than the number of adjustment members 21, and one or more adjustment members 21 may not be installed in the lens barrel 22. During installation and adjustment, the reference member 12 is first installed in the light transmission hole 111, and then the lens barrel 22 may be connected to the light transmission hole 111 or the fixing member 11, and finally the adjustment lens 211 is installed in the lens barrel 22 in sequence, and the adjustment lens 211 is adjusted, so as to ensure that all lenses and the optical lens 122 on the optical path are coaxially arranged.

[0069] There are usually multiple adjustment lenses 211 on each optical path. When the adjustment lenses 211 are installed in the lens barrel 22, they can be arranged in sequence along the axis of the lens barrel 22, and correction parts can be arranged between adjacent adjustment lenses 211 to correct the axis of the adjustment lenses 211.

[0070] The correction part can be implemented in various forms. For example, the correction part can include a correction ring and a correction knob. The correction knob is threadedly connected to the lens barrel 22 and one end abuts against the correction ring. When the correction knob is twisted, it squeezes the correction ring, thereby driving the correction ring to squeeze the adjustment lens 211, thereby adjusting the adjustment lens 211.

[0071] In the technical solution of the above embodiment, the adjustment component 2 is provided with a lens barrel 22 , which can carry multiple adjustment lenses 211 of the adjustment member 21 , facilitate the installation and adjustment of the multiple adjustment lenses 211 , and provide protection for the adjustment lenses 211 .

[0072] Please refer to Figure 5 , Figure 5 A flowchart of an optical system assembly method provided in some embodiments of the present application.

[0073] In a second aspect, an embodiment of the present application provides an optical system assembly method, the optical system assembly method comprising:

[0074] S1, providing a fixing member 11, wherein the fixing member 11 has a plurality of light-transmitting holes 111;

[0075] S2, disposing a plurality of reference members 12 in the light-transmitting hole 111 and respectively corresponding to the light-transmitting holes 111 to obtain a focusing assembly 1;

[0076] S3, connecting the adjustment lens 211 to the outside of the focusing assembly 1 and respectively corresponding to the plurality of light-transmitting holes 111 to obtain an optical system.

[0077] In step S2 , a predetermined angle θ is formed between the light paths passing through each reference member 12 and the light paths are focused on one point, thereby achieving alignment of the multi-view light paths.

[0078] In the above assembly method, the focusing assembly 1 is first assembled, and then the adjustment lenses 211 are installed on the focusing assembly 1, thereby obtaining an optical system. Specifically, a plurality of light-transmitting holes 111 are opened on the fixing member 11 at a predetermined angle θ, and the light-transmitting holes 111 pass through the fixing member 11. The reference members 12 are installed one by one into the light-transmitting holes 111, thereby obtaining the focusing assembly 1 for positioning. The adjustment lenses 211 are installed on the focusing assembly 1, thereby obtaining an optical system, which can realize high-precision alignment of multiple light paths in three-dimensional space.

[0079] In the above assembly method, when assembling the optical system, the focusing assembly 1 is assembled first, and then the adjustment lenses 211 are adjusted on the focusing assembly 1. Firstly, the lens at the end with the highest requirements in the optical path (for example, the reference member 12 can be an optical lens 121 or the reference member 12 has at least one optical lens 122) can be accurately positioned, thereby improving the alignment accuracy; secondly, the overall adjustment of multiple adjustment lenses 211 connected as a whole can be avoided, which is convenient for adjusting the optical system.

[0080] In some embodiments of the present application, the step of obtaining the focusing assembly 1 includes sequentially fixing or adjustably placing a plurality of optical lenses 122 in the light-transmitting hole 111 to form a reference member 12 .

[0081] In the above assembly method, the reference part 12 can be a plurality of optical lenses 122, and the plurality of optical lenses 122 are installed in the light-transmitting hole 111. They can be snap-connected in the light-transmitting hole 111, or they can be adjustably connected in the light-transmitting hole 111. For example, at least one optical lens 122 can adjust the installation state in the light-transmitting hole 111.

[0082] In the above assembly method, multiple optical lenses 122 are directly installed in the light-transmitting hole 111 to form the reference part 12, which can achieve high-precision adjustment of the reference part 12 itself and save the volume of the fixing part 11, thereby reducing the volume of the fixing part 11 and saving costs.

[0083] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. An optical system, characterized in that: include: A focusing assembly, comprising a fixing member and a plurality of reference members, wherein the fixing member is provided with a plurality of light-transmitting holes, the light-transmitting holes passing through the fixing member, and each of the reference members is arranged in one of the light-transmitting holes and corresponds to the light-transmitting hole, so that light paths passing through each of the reference members form a predetermined angle and focus at a predetermined focus; The adjustment component includes a plurality of adjustment members, each of which corresponds to the plurality of reference members one-to-one and is arranged outside the fixing member. Each of the adjustment members includes an adjustment lens, which is arranged on the optical path where the corresponding reference member is located.

2. The optical system according to claim 1, characterized in that The axes of adjacent reference members form the predetermined angle and intersect at one point, so that the optical path passing through each reference member is focused at the predetermined focus.

3. The optical system according to claim 1, characterized in that The reference component is an optical lens, the reference component is detachably connected to the light-transmitting hole, and the adjusting component is detachably connected to the reference component or the light-transmitting hole.

4. The optical system according to claim 1, characterized in that The reference member is an optical lens, a slot is provided in the light-transmitting hole, and the optical lens is snapped into the slot; In each of the light-transmitting holes, there is one optical lens and one card slot; or There are multiple optical lenses and multiple card slots, and the optical lenses are snapped into the card slots one by one, and the multiple optical lenses are coaxially arranged.

5. The optical system according to claim 1, characterized in that The reference part includes a cylinder and an adjusting button. There are multiple cylinders and they are arranged in sequence along the optical path in the light-transmitting hole. Each cylinder has an optical lens. The adjusting button is threadedly connected to the fixing part. There are multiple adjusting buttons. One end of each adjusting button extends into the light-transmitting hole and abuts against one of the cylinders to adjust the coaxiality of the cylinder abutting therewith and the adjacent cylinder.

6. The optical system according to claim 5, characterized in that Among the plurality of the barrels, at least one barrel has a first end with an outer diameter smaller than a second end, and the optical lens is mounted on the first end, and the adjustment button abuts against a side wall of the second end.

7. The optical system according to claim 6, characterized in that The reference member further includes an adjusting ring, which is installed in the light-transmitting hole and abuts against the outer wall surface of the side wall at the second end, and one end of the adjusting button abuts against the outer wall surface of the adjusting ring.

8. The optical system according to claim 1, characterized in that The adjustment assembly also includes a lens barrel, which extends along the optical path. The adjustment lens is located in the lens barrel. There are multiple adjustment lenses and they are arranged in sequence along the lens barrel. Correction pieces are provided between adjacent adjustment lenses to adjust the coaxiality of adjacent adjustment lenses.

9. An optical system assembly method, characterized in that: include: Providing a fixing member, wherein the fixing member has a plurality of light-transmitting holes; A plurality of reference pieces are arranged in the light-transmitting hole and correspond to the light-transmitting holes respectively to obtain a focusing assembly, wherein the light paths passing through the reference pieces form a predetermined angle and focus on one point; The adjusting lens is connected to the outside of the focusing assembly and corresponds to the plurality of light-transmitting holes respectively to obtain an optical system.

10. The optical system assembly method according to claim 9, characterized in that: The steps of obtaining the focusing assembly include: A plurality of optical lenses are fixedly or adjustably arranged in the light-transmitting hole in sequence to form the reference piece.

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