Coaxial optical system mounting frame and coaxial optical system having the same

Abstract

The present invention provides a mounting frame for a coaxial optical system and a coaxial optical system having the same. The mounting frame comprises: a base body, mounted on an optical platform of the coaxial optical system, the base body having a positioning hole for mounting a positioning rod; a clamping assembly, arranged in the positioning hole, for positioning and fixing the positioning rod; and a mounting plate, arranged in the base body, the mounting plate having a mounting hole for mounting an optical element. The clamping assembly positions, clamps and fixes the positioning rod to ensure that the positional relationship between the positioning rod and the mounting frame is unique. In addition, multiple mounting frames can be connected and positioned by positioning rods to ensure collimation and improve the coaxial accuracy of the mounting frame, so as to improve the installation accuracy of the coaxial optical system, thereby improving the calibration accuracy of the optical path and improving the stability of the optical path, and facilitating the calibration operation of the coaxial optical system.

Description

Technical Field

[0001] The present invention relates to the technical field of optical mounting equipment, and in particular to a mounting frame of a coaxial optical system and a coaxial optical system having the same. Background Art

[0002] For the current coaxial optical system, the mounting frame and guide rod are fixed on the optical platform through the cooperation of multiple parts such as the base and the pillar, and four guide rods with a smaller diameter (6mm) are used to fix the mounting frame and determine the optical axis. Because the diameter of the guide rod is too small, it is easy to bend and deform. When the optical path is relatively long, it will cause a large error; when the optical path of the optical system is very short, the bending of the guide rod is not a big problem. However, the actual optical path length of the optical system often ranges from 1m to several meters. Due to the bending of the guide rod, the optical axis can deviate to the mm level. This will reduce the collimation of the entire optical path, causing a large position offset between the central axes of the components, which will have a greater impact on the optical path calibration accuracy. For a relatively ideal optical system, the mechanical collimation accuracy needs to be close to the position accuracy of the optical platform positioning hole, close to 0.1mm accuracy. Summary of the invention

[0003] Based on this, it is necessary to provide a mounting frame for a coaxial optical system and a coaxial optical system having the same that can ensure the collimation of the optical path in order to solve the problem that the guide rods of the current coaxial optical system are easily deformed and result in poor collimation.

[0004] The above purpose is achieved through the following technical solutions:

[0005] A mounting frame for a coaxial optical system, comprising:

[0006] A base body, mounted on the optical platform of the coaxial optical system, the base body having a positioning hole for mounting a positioning rod;

[0007] A clamping assembly, disposed in the positioning hole, for positioning and fixing the positioning rod; and

[0008] The mounting plate is arranged on the base body, and the mounting plate has a mounting hole for mounting the optical element.

[0009] In one of the embodiments, the mounting plate further has a plurality of guide holes for mounting guide rods, and the plurality of guide holes are located around the mounting hole.

[0010] In one embodiment, the mounting plate further has a first fastening hole, the first fastener hole is located on the peripheral side of the guide hole and is connected to the guide hole, the first fastening hole is used to install a first fastener so that the end of the first fastener abuts against the guide rod to fix the guide rod.

[0011] In one embodiment, the mounting frame further comprises a base disposed at the bottom of the base body, and the base is used to increase the contact area between the base body and the optical platform;

[0012] The base has a through hole for mounting the base on the optical platform.

[0013] In one embodiment, the through hole is an oblong limiting hole, the base is installed on the optical platform through a limiting member passing through the limiting hole, and the base can slide along the limiting member through the limiting hole to make the mounting frame slide relative to the optical platform.

[0014] In one embodiment, the clamping assembly includes a flexible spring sheet, one end of which is fixed to the inner wall of the positioning hole, and the other end is a free end, and the flexible spring sheet is bent along the inner wall of the positioning hole and is surrounded by the positioning hole to form an accommodating space for installing the positioning rod;

[0015] The base body also has a second fastening hole, which is connected to the positioning hole and corresponds to the flexible spring sheet. The second fastening hole is used to install a second fastener so that the end of the second fastener abuts against the flexible spring sheet to compress the positioning rod in the flexible spring sheet.

[0016] In one of the embodiments, the clamping assembly further includes a limiting column, which is disposed on the base body and is used to abut against the free end of the flexible spring sheet and limit the flexible spring sheet.

[0017] In one embodiment, the base body further has a second fastening hole, the second fastening hole is connected to the positioning hole, and the second fastening hole is used to install a second fastener so that the second fastener abuts against the positioning rod to press the positioning rod into the positioning hole.

[0018] In one of the embodiments, the inner wall of the positioning hole relative to the second fastening hole further has at least two protrusions arranged at intervals, and the second fastener cooperates with the protrusions to position and fix the positioning rod.

[0019] In one embodiment, the mounting hole is a threaded hole, and the mounting hole is used for an optical element with an external thread.

[0020] In one embodiment, the mounting hole is a light hole, and the mounting plate further has a third fastening hole, which is located on the peripheral side of the mounting hole and is connected to the mounting hole. The third fastening hole is used to install a third fastener, so that the third fastener abuts against the optical element to fix the optical element.

[0021] In one of the embodiments, the inner wall of the mounting hole opposite to the third fastening hole further has at least two protrusions arranged at intervals, and the third fastener and at least two of the protrusions are used to position and fasten the guide rod.

[0022] A coaxial optical system comprises an optical platform, at least one positioning rod, an optical element, and a plurality of mounting brackets as described in any one of the above technical features;

[0023] A plurality of mounting frames are mounted on the optical platform and positioned by at least one positioning rod. The optical element is mounted in the mounting hole of the mounting frame. The plurality of mounting frames are used to mount the optical element of at least one size.

[0024] In one embodiment, a plurality of the mounting frames are arranged in a row and spaced apart from each other.

[0025] In one embodiment, the coaxial optical system further includes a steering adjustment frame, which is used to connect at least two columns of the mounting frames, and the steering adjustment frame has an optical deflection element for deflecting the optical path.

[0026] In one embodiment, the steering adjustment frame has at least two fixing holes, the axes of at least two of the fixing holes are coaxial with the axes of at least two rows of positioning holes of the mounting frame, and the fixing holes are used to install the positioning rods;

[0027] The bottom of the steering adjustment frame also has a fixing seat, and the steering adjustment frame is installed on the optical platform through the fixing seat.

[0028] After adopting the above technical solution, the present invention has at least the following technical effects:

[0029] The mounting frame of the coaxial optical system of the present invention and the coaxial optical system having the same, after the mounting frame is mounted on the optical platform, a positioning rod is installed in the mounting hole, and the positioning rod is positioned, clamped and fixed by a clamping assembly to ensure that the positional relationship between the positioning rod and the mounting frame is unique. In addition, multiple mounting frames can be connected and positioned by the positioning rod, which effectively solves the problem of poor collimation caused by the easy deformation of the guide rod of the current coaxial optical system, ensures the collimation, improves the coaxial accuracy of the mounting frame, and improves the installation accuracy of the coaxial optical system, thereby improving the calibration accuracy of the optical path and improving the stability of the optical path, and facilitating the calibration operation of the coaxial optical system. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A three-dimensional diagram of a mounting frame of a coaxial optical system in a first embodiment of the present invention;

[0031] Figure 2 A three-dimensional diagram of a mounting frame of a coaxial optical system in a second embodiment of the present invention;

[0032] Figure 3 A three-dimensional diagram of a mounting frame of a coaxial optical system in a third embodiment of the present invention;

[0033] Figure 4 A three-dimensional diagram of a mounting frame of a coaxial optical system in a fourth embodiment of the present invention;

[0034] Figure 5 A three-dimensional diagram of a mounting frame of a coaxial optical system in a fifth embodiment of the present invention;

[0035] Figure 6 is a stereogram of a coaxial optical system in a sixth embodiment of the present invention;

[0036] Figure 7 is a stereogram of a coaxial optical system in a seventh embodiment of the present invention;

[0037] Figure 8 is a stereoscopic diagram of a coaxial optical system in an eighth embodiment of the present invention;

[0038] Fig. 9 is a stereogram of a coaxial optical system in a ninth embodiment of the present invention;

[0039] Fig.10 for Fig. 9 A stereoscopic view of a steering adjustment frame in a coaxial optical system shown;

[0040] Fig.11 is a stereogram of a coaxial optical system in a tenth embodiment of the present invention;

[0041] Fig.12 for Fig.11 A stereoscopic view of a steering adjustment frame in a coaxial optical system is shown.

[0042] in:

[0043] 100-Mounting frame;

[0044] 110-mounting plate;

[0045] 111-mounting hole; 1111-protrusion;

[0046] 112-guide hole;

[0047] 113-first fastening hole;

[0048] 114 - third fastening hole;

[0049] 120-base body;

[0050] 121-positioning hole; 1211-protrusion;

[0051] 122 - second fastening hole;

[0052] 130- clamping assembly;

[0053] 131-flexible spring;

[0054] 132-limiting column;

[0055] 140-base;

[0056] 141-limiting hole;

[0057] 200-optical platform;

[0058] 210-matching hole;

[0059] 300-positioning rod;

[0060] 400-guide rod;

[0061] 500-second fastener;

[0062] 600-limiting parts;

[0063] 700-steering adjustment frame;

[0064] 710-light hole;

[0065] 720-fixing hole;

[0066] 730-Fixed seat. DETAILED DESCRIPTION

[0067] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the mounting frame of the coaxial optical system of the present invention and the coaxial optical system having the same are further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0068] The serial numbers of the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0069] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0070] See also Figures 6 to 8 , Fig. 9 and Fig.11 The present invention provides a mounting frame 100 for a coaxial optical system. The mounting frame 100 is applied to a coaxial optical system to mount optical elements of the coaxial optical system. A coaxial optical system is a modular way to conveniently construct an optical system. Compared with an open optical system, it can increase the speed of constructing optical elements and increase the stability of the optical system. After the coaxial optical system adopts the above-mentioned mounting frame 100, various optical elements can be assembled to construct different types of optical systems to adapt to occasions with different usage requirements. After the coaxial optical system adopts the mounting frame 100 of the present invention, the coaxial accuracy of each mounting frame 100 can be improved to improve the installation accuracy of the coaxial optical system, thereby improving the calibration accuracy of the optical path and improving the stability of the optical path, and facilitating the calibration operation of the coaxial optical system.

[0071] See also Figures 1 to 6 In one embodiment, the mounting frame 100 of the coaxial optical system includes a base body 120, a clamping assembly 130, and a mounting plate 110. The base body 120 is mounted on the optical platform 200 of the coaxial optical system, and the base body 120 has a positioning hole 121 for mounting the positioning rod 300. The clamping assembly 130 is disposed in the positioning hole 121, and is used to position and fix the positioning rod 300. The mounting plate 110 is disposed on the base body 120, and the mounting plate 110 has a mounting hole 111 for mounting an optical element.

[0072] The base body 120 plays a role in installation and positioning. The bottom of the base body 120 is installed on the optical platform 200, and the mounting plate 110 is installed on the top of the base body 120. The mounting plate 110 is a mounting frame for mounting optical elements in the prior art. The middle area of ​​the mounting frame 100 has a mounting hole 111, and the mounting hole 111 is used to mount the optical element. It is worth noting that the optical element here is not directly mounted in the mounting hole 111, but is mounted through a mounting seat. The mounting seat of the optical element is omitted in some descriptions.

[0073] The mounting frame 100 of the present invention adds a base body 120 below the mounting plate 110, and further positions the mounting frame 100 by the cooperation of the positioning rod 300 and the positioning hole 121 of the base body 120. After the positioning rod 300 coaxially positions the mounting frame 100, the optical elements can be arranged along a common optical axis. In this way, the coaxial accuracy of the two adjacent mounting plates 110 is ensured, and then the collimation of the optical path is ensured. In addition, the positioning rod 300 is made of a hard metal material. That is, the positioning rod 300 has the characteristics of large diameter, strong rigidity and high precision, which can ensure the positioning effect of the positioning rod 300.

[0074] Furthermore, the mounting frame 100 of the present invention further has a clamping assembly 130 in the positioning hole 121, and the clamping assembly 130 can position and fix the positioning rod 300 to the base body 120. In this way, the positioning rod 300 can be reliably fixed in the base body 120, and the position relationship of the positioning rod 300 relative to the mounting frame 100 is unique. When the mounting frame 100 establishes a connection relationship with an adjacent mounting frame 100 through the positioning rod 300, the position relationship between the positioning rod 300 and the adjacent mounting frame 100 can also be guaranteed to be unique. In this way, it is possible to avoid affecting the coaxial accuracy of two adjacent mounting frames 100 due to the installation relationship of the positioning rod 300, so as to improve the coaxial accuracy between adjacent mounting frames 100.

[0075] The mounting frame 100 of the above embodiment can be connected and positioned by the positioning rod 300, which effectively solves the problem of poor collimation caused by the easy deformation of the guide rod of the current coaxial optical system, ensures the collimation, improves the coaxial accuracy of the mounting frame 100, and improves the installation accuracy of the coaxial optical system, thereby improving the calibration accuracy of the optical path and improving the stability of the optical path, and facilitating the calibration operation of the coaxial optical system. In addition, the mounting frame 100 of the present invention sets the base body 120 below the mounting plate 110, so that the installation of the positioning rod 300 will not affect the layout of the optical elements above the mounting frame 100, and facilitates the installation and use of the coaxial optical system.

[0076] See also Figures 1 to 6 In one embodiment, the mounting plate 110 further has a plurality of guide holes 112 for mounting the guide rod 400, and the plurality of guide holes 112 are located around the mounting hole 111. A plurality of guide holes 112 are arranged around the mounting hole 111, and the guide holes 112 are used to mount the guide rod 400, and the guide rod 400 plays a role of coaxial positioning. In this way, the mounting frame 100 can establish a connection relationship with the adjacent mounting frame 100 through the guide rod 400, so that the optical elements can be arranged along a common optical axis. The coaxial optical system formed by connecting the adjacent mounting frames 100 through the guide rod 400 is a cage optical system.

[0077] It is worth noting that in various embodiments of the present invention, the mounting frame 100 has a guide hole 112. Of course, in other embodiments of the present invention, the mounting frame 100 may not have a guide hole 112. Optionally, the number of guide holes 112 can be multiple to ensure high coaxial accuracy between adjacent mounting frames 100. Exemplarily, the number of guide holes 112 in each group is four, and the four guide holes 112 are symmetrically distributed around the mounting hole 111. Of course, in other embodiments of the present invention, the number of guide holes 112 can be more, such as five, six, etc.

[0078] Since the guide rod 400 has a small diameter and is prone to bending and deformation, the mounting frame 100 of the present invention further positions the mounting frame 100 through the cooperation between the positioning rod 300 and the positioning hole 121 of the base body 120, and there is no need to use the guide rod 400 for positioning. In this way, the force on the guide rod 400 can be reduced, the guide rod 400 can be prevented from bending and deformation, the coaxial accuracy of the two adjacent mounting plates 110 can be ensured, and the collimation of the optical path can be ensured. It is worth noting that the diameter of the positioning rod 300 is much larger than the diameter of the guide rod 400.

[0079] Optionally, the diameter of the guide hole 112 is the same as the diameter of the guide rod 400. The mounting frame 100 can slide along the guide rod 400 through the guide hole 112 to adjust the position of the mounting frame 100. After the position of the mounting frame 100 is determined, it is necessary to fix the position of the mounting frame 100 on the guide rod 400. In one embodiment, the mounting plate 110 also has a first fastening hole 113, the first fastener hole is located on the peripheral side of the guide hole 112 and is connected to the guide hole 112, and the first fastening hole 113 is used to install the first fastener, so that the end of the first fastener abuts against the guide rod 400 to fix the guide rod 400. After the guide rod 400 is installed in the guide hole 112, the first fastener is installed in the first fastening hole 113, and the first fastener can pass through the first fastening hole 113 and extend into the guide hole 112, and abut against the guide rod 400. At this time, the side wall of the guide rod 400 away from the first fastener is tightly against the inner wall of the guide hole 112, so that the guide rod 400 cannot slide along the guide hole 112, thereby fixing the mounting frame 100. Exemplarily, the first fastener is a threaded member, and the first fastening hole 113 is a threaded hole.

[0080] In one embodiment, the mounting frame 100 further includes a base 140 disposed at the bottom of the base body 120, and the base 140 is used to increase the contact area between the base body 120 and the optical platform 200. That is, the base body 120 can be fixedly mounted on the optical platform 200 through the base 140, so that the base body 120 is reliably mounted and fixed. Optionally, the base 140 is protruded relative to the base body 120. In one embodiment of the present invention, the base 140 can protrude from at least one side of the base body 120 in the axial direction of the optical axis to increase the contact area. Of course, in other embodiments of the present invention, the base 140 can also protrude from at least one side of the base body 120 in a direction perpendicular to the axial direction of the optical axis, or the base 140 can also be a combination of the above two methods, that is, it can protrude in the axial direction and in a direction perpendicular to the axial direction.

[0081] Exemplarily, the base 140 is located on the side of the base body 120, so that the base body 120 and the base 140 are arranged in an L shape. In this way, the contact area between the bottom of the mounting frame 100 and the optical platform 200 can be increased, thereby increasing the stability of the mounting frame 100 fixed to the optical platform 200. Further, the base 140 also has a through hole, and the stopper 600 passes through the through hole to fasten the base 120 to the optical platform 200. It can be understood that the shape of the through hole is not limited in principle, and can be circular, oblong, etc., as long as the fixed installation of the base 200 can be achieved.

[0082] Exemplarily, the through hole is an oblong limiting hole 141, and the base 140 is installed on the optical platform 200 by passing the limiting member 600 through the limiting hole 141, and the base 140 can slide along the limiting member 600 through the limiting hole 141, so that the mounting frame 100 slides relative to the optical platform 200. It is worth noting that the optical platform 200 has matching holes 210 arranged in rows and columns, and the matching holes 210 cooperate with the limiting member 600. After the limiting member 600 passes through the limiting hole 141 and is installed in the matching hole 210 of the optical platform 200, the mounting frame 100 can be installed on the optical platform 200. There are two limiting members 600, and the position of the mounting frame 100 on the optical platform 200 is limited by the two limiting members 600. The two limiting members 600 can be located at both ends of the oblong limiting hole 141. At this time, the position of the mounting frame 100 cannot be adjusted, such as Figure 6 When the two stoppers 600 are located in the middle area of ​​the stopper hole 141, the base 140 can slide along the length direction of the stopper hole 141, so that the mounting frame 100 slides relative to the optical platform 200 to adapt to the parallel position of the optical path, as shown in FIG. Figure 7 As shown. Optionally, the stopper 600 is a threaded member, and the matching hole 210 is a threaded hole. Of course, in other embodiments of the present invention, the stopper 600 can also be a pin, and the matching hole 210 is a plain hole.

[0083] In one embodiment, the base 140, the base body 120, the clamping assembly 130, and the mounting plate 110 are an integrated structure. The mounting frame 100 with an integrated structure can improve the stability of the mounting frame 100, so that the mounting frame 100 can be fixed to the optical platform 200 directly using the limiter 600, thereby eliminating the matching error of the mounting frame 100 itself, improving the installation accuracy, and further improving the coaxial accuracy between the mounting frames 100. Of course, in other embodiments of the present invention, the base 140, the base body 120, the clamping assembly 130, and the mounting plate 110 can also be separately provided and fastened by screws to ensure the stability and accuracy of the mounting frame 100, while also being convenient for use in different scenarios and having a wide range of applications.

[0084] In one embodiment, the clamping assembly 130 includes a flexible spring sheet 131, one end of which is fixed to the inner wall of the positioning hole 121, and the other end is a free end, and the flexible spring sheet 131 is bent along the inner wall of the positioning hole 121, and is surrounded by the positioning hole 121 to form an accommodation space for installing the positioning rod 300. The flexible spring sheet 131 is arranged in an arc shape, and after it is installed in the positioning hole 121, there is a certain distance between the free end of the flexible spring sheet 131 and the inner wall of the positioning hole 121. In other words, the accommodation space surrounded by the flexible spring sheet 131 and the positioning hole 121 is a semi-enclosed structure. In this way, after the positioning rod 300 is installed in the accommodation space, the position of the flexible spring sheet 131 can be adjusted to fix the positioning rod 300.

[0085] There is a certain space on both sides of the flexible spring sheet 131. Optionally, the size of the accommodating space can be smaller than the cross-sectional size of the positioning rod 300. At this time, after the positioning rod 300 is installed in the accommodating space, the flexible spring sheet 131 can be squeezed outward. In this way, the elastic force of the flexible spring sheet 131 can fix the positioning rod 300 to the positioning hole 121.

[0086] Of course, the accommodating space may also be greater than or equal to the cross-sectional size of the positioning rod 300. In this case, the flexible spring sheet 131 may be pressed against by an external fixing member to fix the positioning rod 300. Specifically, the base body 120 further has a second fastening hole 122, which is in communication with the positioning hole 121 and corresponds to the flexible spring sheet 131. The second fastening hole 122 is used to install the second fastener 500, so that the end of the second fastener 500 abuts against the flexible spring sheet 131 to press the positioning rod 300 in the flexible spring sheet 131. After the positioning rod 300 is installed in the positioning hole 121, the second fastener 500 is installed in the second fastening hole 122, and passes through the second fastening hole 122 to abut against the side of the flexible spring sheet 131 away from the positioning rod 300, so that the flexible spring sheet 131 is deformed to press the positioning rod 300 against the inner wall of the positioning hole 121, thereby ensuring that the positioning rod 300 is reliably fixed in the accommodating space. Optionally, the second fastening member 500 is a threaded member, and the second fastening hole 122 is a threaded hole.

[0087] In one embodiment, the positioning hole 121 further has at least two spaced protrusions 1211 on the inner wall relative to the flexible spring sheet 131, and the flexible spring sheet 131 and the protrusions 1211 are used to position and fix the positioning rod 300. The protrusions 1211 are ridges extending along the axial direction of the positioning hole 121, and the ridges protrude toward the inner side of the positioning hole 121. In this way, after the positioning rod 300 is installed in the positioning hole 121, the positioning rod 300 will abut against the flexible spring sheet 131 and at least two protrusions 1211, forming multi-point positioning, thereby improving the positioning accuracy between the positioning hole 121 and the positioning rod 300, and then when the same positioning rod 300 is installed with multiple mounting frames 100, the coaxial accuracy between the mounting frames 100 can be improved. Exemplarily, the number of protrusions 1211 is two, and the two protrusions 1211 are arranged opposite to the flexible spring sheet 131. Of course, in other embodiments of the present invention, the number of protrusions 1211 can be more.

[0088] In one embodiment, the clamping assembly 130 further includes a limiting column 132, which is disposed on the base body 120 and is used to abut against the free end of the flexible spring sheet 131 and limit the position of the flexible spring sheet 131. The limiting column 132 is used to limit the position of the free end of the flexible spring sheet 131 to prevent the flexible spring sheet 131 from excessive deformation. When the flexible spring sheet 131 is in a free state, there is a certain distance between the free end of the flexible spring sheet 131 and the limiting column 132. When the second fastener 500 abuts against the flexible spring sheet 131, the flexible spring sheet 131 will deform; and the second fastener 500 gradually presses against the flexible spring sheet 131, and the free end of the flexible spring sheet 131 gradually approaches the limiting column 132. When the free end of the flexible spring sheet 131 abuts against the limiting column 132, the flexible spring sheet 131 stops pressing the positioning rod 300 to prevent the flexible spring sheet 131 from excessive deformation. In this way, when the second fastener 500 is separated from the flexible spring sheet 131 , the flexible spring sheet 131 can be reset.

[0089] Of course, in other embodiments of the present invention, the base body 120 also has a second fastening hole 122, which is connected to the positioning hole 121, and the second fastening hole 122 is used to install the second fastener 500, so that the end of the second fastener 500 abuts against the positioning rod 300, so as to press the positioning rod 300 into the positioning hole 121. Specifically, after the positioning rod 300 is installed in the positioning hole 121, the second fastener 500 is installed in the second fastening hole 122, and passes through the second fastening hole 122 to abut against the outer wall of the positioning rod 300 facing the second fastening hole 122. At this time, the side wall of the positioning rod 300 away from the second fastener 500 will tightly abut against the inner wall of the positioning hole 122, ensuring that the positioning rod 300 is reliably fixed in the positioning hole. Optionally, the second fastener 500 is a threaded member, and the second fastening hole 122 is a threaded hole.

[0090] In one embodiment, the positioning hole 121 further has at least two spaced protrusions 1211 on the inner wall relative to the second fastening hole 122, and the second fastener 500 and the protrusions 1211 are used to position and fix the positioning rod 300. The protrusions 1211 are ridges extending along the axial direction of the positioning hole 121, and the ridges protrude toward the inner side of the positioning hole 121. In this way, after the positioning rod 300 is installed in the positioning hole 121, the positioning rod 300 will abut against the end of the second fastener 500 and at least two protrusions 1211, forming multi-point positioning, thereby improving the positioning accuracy between the positioning hole 121 and the positioning rod 300, and then when the same positioning rod 300 is installed with multiple mounting frames 100, the coaxial accuracy between the mounting frames 100 can be improved. Exemplarily, the number of protrusions 1211 is two, and the two protrusions 1211 are arranged opposite to the second fastening hole 122. Of course, in other embodiments of the present invention, the number of protrusions 1211 can be more.

[0091] In one embodiment, the mounting hole 111 is a threaded hole, and the mounting hole 111 is used for an optical element with external threads. That is, the optical element can be nested in a mounting seat with external threads, and at this time, the optical element can be installed in the mounting hole 111 through the external threads of the mounting seat, thereby realizing the installation of the optical element.

[0092] In the first embodiment of the present invention, Figure 1 As shown, the mounting frame 100 can mount a 1-inch optical element; in the second embodiment of the present invention, as shown Figure 2 As shown, the mounting frame 100 can mount a 2-inch optical element; of course, in other embodiments of the present invention, the mounting frame 100 can also mount optical elements of other sizes. It is worth noting that for optical elements of different sizes, the structure of the mounting frame 100 used is the same, except that the aperture of the mounting hole 111 and the space between the plurality of guide rods 400 will be adjusted according to the size of the optical element.

[0093] In one embodiment, the mounting hole 111 is a light hole. The optical element can be embedded in the mounting hole 111 through a mounting seat to achieve the installation of the optical element. In order to ensure that the optical element is reliably positioned, the mounting plate 110 also has a third fastening hole 114. The third fastening hole 114 is located on the peripheral side of the mounting hole 111 and is connected to the mounting hole 111. The third fastening hole 114 is used to install a third fastener so that the third fastener abuts against the optical element to fix the optical element. Specifically, after the optical element is installed in the mounting hole 111, the third fastener is installed in the third fastening hole 114, and passes through the third fastening hole 114 to extend into the mounting hole 111 and abut against the optical element, so that the outer wall of the optical element away from the third fastener is tightly attached to the inner wall of the mounting hole 111, ensuring that the optical element is accurately positioned in the mounting hole 111, thereby ensuring the coaxial accuracy of the optical axis of the optical element in the mounting holes 111 of multiple mounting frames 100. Exemplarily, the mounting seat is a sleeve, the third fastening member is a threaded member, and the third fastening hole 114 is a threaded hole.

[0094] In one embodiment, the inner wall of the mounting hole 111 opposite to the third fastening hole 114 further has at least two spaced protrusions 1111, and the third fastener and the at least two protrusions 1111 are used to position and fasten the guide rod 400. The protrusion 1111 is a ridge extending along the axial direction of the mounting hole 111, and the ridge protrudes toward the inner side of the mounting hole 111. In this way, after the optical element is mounted in the mounting hole 111 through the mounting seat, the optical element will abut against the third fastener and the at least two protrusions 1111, forming a multi-point positioning, thereby improving the positioning accuracy between the optical element and the mounting hole 111, so as to improve the coaxial accuracy between the mounting frame 100. Exemplarily, the number of protrusions 1111 is two, and the two protrusions 1111 are arranged opposite to the third fastening hole 114. Of course, in other embodiments of the present invention, the number of protrusions 1111 can be more.

[0095] In a third embodiment of the present invention, Figure 3 As shown, the mounting frame 100 can mount a 1-inch optical element; in the fourth embodiment of the present invention, as shown Figure 4 As shown, the mounting frame 100 can mount a 2-inch optical element; of course, in other embodiments of the present invention, the mounting frame 100 can also mount optical elements of other sizes. It is worth noting that for optical elements of different sizes, the structure of the mounting frame 100 used is the same, except that the aperture of the mounting hole 111 and the space between the plurality of guide rods 400 will be adjusted according to the size of the optical element.

[0096] It is worth noting that the coaxial optical system can also use optical elements of different sizes to establish an optical path. In this case, a transfer mounting frame 100 is required to transfer the mounting frames 100 of two optical elements of different sizes. Specifically, the structure of the transfer mounting frame 100 is the same as the structure of the mounting frame 100 in the above embodiment, except that a guide hole 112 for transfer is added to the circumference of the mounting hole 111. At this time, the centers of the circumscribed circles of the two guide holes 112 coincide, but the outer diameters are different. The two guide holes 112 are respectively adapted to the guide rods 400 of the two optical elements of different sizes. In this way, the mounting frames 100 of two optical elements of different sizes can be installed in the guide holes 112 of the transfer mounting frame 100 through the guide rods 400. Optionally, the transfer mounting frame 100 can be a light hole or a threaded hole.

[0097] In a fifth embodiment of the present invention, Figure 5 As shown, the two sides of the transfer mounting frame 100 are respectively a mounting frame 100 for mounting a 1-inch optical element and a mounting frame 100 for mounting a 2-inch optical element. Of course, in other embodiments of the present invention, the transfer mounting frame 100 can also transfer mounting frames 100 for optical elements of different sizes.

[0098] In the above five embodiments, the structure of the mounting frame 100 is exactly the same, and all of them have mounting holes 111, positioning holes 121, etc. The difference lies in the different forms of the mounting holes 111, such as threaded holes or light holes, and the different apertures of the mounting holes 111, and the different spacings between the guide holes 112 to accommodate optical elements of different sizes. The embodiments of the present invention only describe the differences of the mounting frame 110, and the similarities are not repeated one by one.

[0099] See also Figures 6 to 8 The present invention also provides a coaxial optical system, comprising an optical platform 200, at least one positioning rod 300, an optical element, and a plurality of mounting frames 100 of any of the above embodiments. The plurality of mounting frames 100 are mounted on the optical platform 200 and positioned by at least one positioning rod 300, the optical element is mounted in the mounting hole 111 of the mounting frame 100, and the plurality of mounting frames 100 are used to mount optical elements of at least one size. Optionally, the optical element includes but is not limited to a lens, etc.

[0100] The optical platform 200 has matching holes 210 arranged in rows and columns, and the distances between the matching holes 210 are the same. This makes it easy to install and position the mounting frame 100. The same positioning rod 300 can be installed between two adjacent mounting frames 100 to position the adjacent mounting frames 100, and when the number of mounting frames 100 is greater, one positioning rod 300 can also be used for positioning, and of course at least two positioning rods 300 can also be used for positioning. In this case, the ends of two positioning rods 300 need to be installed in the mounting holes 111 of the mounting frames 100 in the middle area. The optical element can be installed in the mounting hole 111 of the mounting frame 100 through the mounting seat. It is worth noting that when the number of optical elements to be installed in the coaxial optical system is small, it is not necessary to install the guide rod 400 between the mounting frames 100. When the coaxial optical system needs to install a large number of optical elements, the mounting frame 100 cannot meet the installation requirements, or when the distance between two adjacent mounting frames 100 is long, in order to ensure the stability of optical path transmission, at this time, the guide rod 400 is installed between the two adjacent mounting frames 100. It can be understood that the optical element can be installed on the guide rod 400 through a mounting seat or a multi-dimensional adjustment frame. In addition, after the optical element is installed on the guide rod 400, the optical element on the guide rod 400 and the optical element on the mounting frame 100 can be arranged along a common optical axis, and the optical element on the guide rod 400 can also slide along the guide rod 400 to adjust its position.

[0101] After the coaxial optical system of the present invention adopts the mounting frame 100 in the above embodiment, the guide rod 400 can be prevented from bending and deforming, thereby ensuring the coaxial accuracy between the mounting frames 100. In this way, there will be no large positional offset between the optical elements, thus ensuring the collimation of the optical path and facilitating the calibration operation of the optical path accuracy.

[0102] In one embodiment, a plurality of mounting frames 100 are arranged in a row at intervals. It is understandable that mounting frames 100 for mounting optical elements of the same size may be arranged side by side, or mounting frames 100 for mounting optical elements of at least two sizes may be arranged side by side, and mounting frames 100 for mounting optical elements of two different sizes may be connected via a switching mounting frame 100.

[0103] In the sixth embodiment of the present invention, Figure 6 As shown, there are five mounting frames 100, the two on the left are mounting frames 100 for 1-inch optical elements, the two on the right are mounting frames 100 for 2-inch optical elements, and the middle one is a mounting frame 100 for connecting 1-inch optical elements with 2-inch optical elements. The five mounting frames 100 are arranged in a row, and the positioning rods 300 pass through the positioning holes 121 of the five mounting frames 100, and the positioning rods 300 are clamped and positioned by the clamping components 130 and the second fasteners 500 of the corresponding mounting frames 100. Then, each mounting frame 100 is fixed to the optical platform 200 by the limiting members 600, and the limiting members 600 are respectively arranged at both ends of the oblong limiting holes 141. At this time, the projection of the optical axis on the optical platform 200 is just along the arrangement direction of the matching holes 210 of the optical platform 200. The guide rods 400 are respectively connected through the mounting holes 111 of each mounting frame 100 and fixed by the first fasteners. The optical element can be fixed on the guide rod 400 through a mounting seat or a multi-dimensional adjustment frame so that the optical element is arranged along a common optical axis, and the optical element can move along the guide rod 400. The two mounting frames 100 on the left and their guide rods 400 are suitable for mounting 1-inch optical elements, the two mounting frames 100 on the right and their guide rods 400 are suitable for mounting 2-inch optical elements, and the middle mounting frame 100 realizes the conversion between the mounting frame 100 for 1-inch optical elements and the mounting frame 100 for 2-inch optical elements.

[0104] In the seventh embodiment of the present invention, Figure 7 As shown, the number and arrangement of the mounting brackets 100 are exactly the same as those of the sixth embodiment, except that the stopper 600 is installed in the middle area of ​​the oblong stopper hole 141, and is no longer located at the end of the oblong stopper hole 141. In this way, the projection of the optical axis on the optical platform 200 is parallel to the arrangement direction of the matching holes 210 on the optical platform 200, and the optical axis can be arbitrarily moved perpendicular to the above arrangement direction, that is, moved along the length direction of the oblong hole, to meet different usage requirements.

[0105] See also Figure 8In one embodiment, the coaxial optical system further includes a steering adjustment frame 700, which is used to connect at least two columns of mounting frames 100, and the steering adjustment frame 700 has an optical deflection element for deflecting the optical path. Specifically, the steering adjustment frame 700 has at least two light holes 710, and the at least two light holes 710 correspond to the mounting holes 111 of at least two columns of mounting frames 100 respectively, and the light holes 710 are used for light passing through the optical elements on the mounting frame 100. It is worth noting that the optical deflection element can only realize the reflection of the light path, only realize the refraction of the light path, or realize refraction and reflection at the same time. Exemplarily, the optical deflection element can be a reflector dichroic mirror or a polarization beam splitter, etc. Of course, in other embodiments of the present invention, the optical deflection element can also be other elements that can realize light path deflection. The intersection of the optical axes of the optical elements of at least two columns of mounting frames 100 is located at the optical deflection element. When the light path is deflected, a deflected coaxial optical system is constructed by the steering adjustment frame 700. Specifically, the steering adjustment frame 700 can be connected to two rows of mounting frames 100. In this case, the two rows of mounting frames 100 are arranged at 90°, so that the optical path is deflected by 90°. Of course, the steering adjustment frame 700 can also be connected to three rows of mounting frames 100. In this case, the three rows of mounting frames 100 are arranged in a T shape, and the two rows of optical paths can be simultaneously converged to the same optical path, or one optical path can be dispersed to two optical paths.

[0106] In an eighth embodiment of the present invention, Figure 8 As shown, only the mounting frame 100 for mounting a 1-inch optical element and the mounting frame 100 for mounting a 2-inch optical element are used as examples for description, and mounting frames 100 of other sizes can also be applied to this embodiment. Specifically, there are two mounting frames 100 for 1-inch optical elements. After the positioning rod 300 passes through the positioning holes 121 of the two mounting frames 100, the positioning rod 300 is clamped and positioned by the clamping assembly 130 and the second fastener 500 of the corresponding mounting frame 100. Then, each mounting frame 100 is fixed to the optical platform 200 by the limiter 600, and the limiter 600 is arranged at both ends of the oblong limiter hole 141. The guide rod 400 is connected by passing through the mounting holes 111 of each mounting frame 100, and fixed by the first fastener. The optical element can be fixed on the guide rod 400 by a mounting seat or a multi-dimensional adjustment frame, so that the optical element is arranged along a common optical axis, and the optical element can move along the guide rod 400, and the optical axis is arranged along the matching hole 210 direction X.

[0107] There are two mounting frames 100 for 2-inch optical elements. After the positioning rod 300 passes through the positioning holes 121 of the two mounting frames 100, the positioning rod 300 is clamped and positioned by the clamping assembly 130 and the second fastener 500 of the corresponding mounting frame 100. Then, each mounting frame 100 is fixed to the optical platform 200 by a limiter 600, and the limiters 600 are respectively arranged at both ends of the oblong limiter hole 141. The guide rod 400 is connected by passing through the mounting holes 111 of each mounting frame 100 and fixed by the first fastener. The optical element can be fixed to the guide rod 400 by a mounting seat or a multi-dimensional adjustment frame, so that the optical element is arranged along a common optical axis, and the optical element can move along the guide rod 400, and the optical axis is arranged along the matching hole 210 direction Y.

[0108] The arrangement direction X of the matching holes 210 and the arrangement direction Y of the matching holes 210 are perpendicular to each other, and the accuracy is determined by the optical platform 200, so the two optical axes of the optical elements on the two sets of mounting frames 100 are also perpendicular to each other. An optical deflection element such as a reflector that forms an angle with the direction X of the matching holes 210 and the direction Y of the matching holes 210 is placed on the steering adjustment frame 700, and the intersection of the two optical axes is on the optical deflection element. The optical path is calibrated by adjusting the pitch and deflection of the optical deflection element.

[0109] In one embodiment, the steering adjustment frame 700 has at least two fixing holes 720, and the axes of the at least two fixing holes 720 are respectively coaxial with the axes of the positioning holes 121 of at least two rows of mounting frames 100, and the fixing holes 720 are used to install the positioning rod 300. That is, a fixing hole 720 having the same function as the positioning hole 121 is further provided below the light-through hole 710, and the positioning rod 300 is installed through the fixing hole 720, so that the light-through hole 710 of the steering adjustment frame 700 and the mounting hole 111 of the mounting frame 100 are coaxially arranged, thereby ensuring the coaxial accuracy between the mounting frame 100 and the steering adjustment frame 700. In addition, since the steering adjustment frame 700 has at least two fixing holes 720, the coaxial relationship of at least two rows of mounting frames 100 is established through at least two fixing holes 720, which can improve the vertical accuracy and coaxial accuracy of at least two optical axes, thereby improving the calibration accuracy of the optical path and improving the stability of the optical path. Specifically, during installation, the mounting frames 100 are connected and positioned by the positioning rods 300 , and then the positioning rods 300 are installed in the fixing holes 720 of the steering adjustment frame 700 , so as to achieve installation and positioning between the mounting frames 100 and the steering adjustment frame 700 .

[0110] Furthermore, a fixing seat 730 is provided below the steering adjustment frame 700, and the steering adjustment frame 700 is mounted on the optical platform 200 through the fixing seat 730, and is fixed to the optical platform 200 through a pressing block and screws, etc., to ensure that the steering adjustment frame 700 is reliably fixed and the position does not move. Optionally, the steering adjustment frame 700 and the fixing seat 730 can be an integrated structure or can be separately arranged.

[0111] In the ninth and tenth embodiments of the present invention, the specific structure and assembly form of the coaxial optical system are exactly the same as those of the coaxial optical system in the eighth embodiment, except for the difference in the structure of the steering adjustment frame 700. In the ninth and tenth embodiments, the steering adjustment frame 700 has a fixing hole 720 and a fixing seat 730, and is fixed to the optical platform 200 through the fixing seat 730. The positioning rod 300 is installed through the fixing hole 720 to achieve the coaxial accuracy of the transfer adjustment frame 700 and the mounting frame 100.

[0112] Specifically, in the ninth embodiment, the steering adjustment frame 700 has two fixing holes 720 in perpendicular directions, which are respectively connected to the two rows of mounting frames 100, and the coaxial optical system is set in an L shape. In addition, the steering adjustment frame 700 has optical deflection elements such as reflectors that cooperate with the light holes 710, and the intersection of the two optical axes is on the optical deflection element, and the optical path is calibrated by the pitch and deflection of the optical deflection element. The steering adjustment frame 700 is respectively installed with the positioning rods 300 of the two rows of mounting frames 100 through the two fixing holes 720, which can improve the vertical accuracy of the two optical axes and reduce the volume of the steering adjustment frame 700.

[0113] In the tenth embodiment, the steering adjustment frame 700 has three fixing holes 720, which are respectively connected to the three rows of mounting frames 100, and the coaxial optical system at this time is set in a T shape. In addition, the steering adjustment frame 700 has optical deflection elements such as dichroic mirrors or polarization beam splitters that cooperate with the light-through holes 710, and the intersection of the optical axes of each other is on the optical deflection element, and the optical path is calibrated by the pitch and deflection of the optical deflection element. The steering adjustment frame 700 is respectively installed with the positioning rods 300 of the three rows of mounting frames 100 through the three fixing holes 720, which can improve the vertical accuracy of the optical axes of each other. Of course, in other embodiments of the present invention, the steering adjustment frame 700 may also have four fixing holes 720, which are cross-shaped after being connected to the positioning rods 300.

[0114] The coaxial optical system of the present invention uses a positioning rod 300 with a large diameter, strong rigidity and high precision to position the mounting frame 100. The mounting frame 100 has a positioning hole 121 with the same diameter as the positioning rod 300, and a clamping assembly 130 is used to fix the positioning rod 300, thereby improving the coaxial accuracy between the mounting frames 100, improving the installation accuracy of the coaxial optical system, thereby improving the calibration accuracy of the optical path, and improving the stability of the optical path.

[0115] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0116] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A mounting frame for a coaxial optical system, characterized in that: include: A base body, mounted on the optical platform of the coaxial optical system, wherein the base body has a positioning hole for mounting a positioning rod; A clamping assembly, disposed in the positioning hole, for positioning and fixing the positioning rod; and A mounting plate is arranged on the base body, the mounting plate has a mounting hole for mounting an optical element, the mounting plate also has a plurality of guide holes for mounting a guide rod, the plurality of guide holes are located around the mounting hole; the mounting plate also has a first fastening hole, the first fastening hole is located around the guide hole and communicated with the guide hole, the first fastening hole is used to install a first fastener, so that an end of the first fastener abuts against the guide rod to fix the guide rod; Wherein, the clamping assembly includes a flexible spring sheet, one end of which is fixed to the inner wall of the positioning hole, and the other end is a free end, and the flexible spring sheet is bent along the inner wall of the positioning hole and is surrounded by the positioning hole to form an accommodating space for installing the positioning rod; The base body also has a second fastening hole, which is connected to the positioning hole and corresponds to the flexible spring sheet. The second fastening hole is used to install a second fastener so that the end of the second fastener abuts against the flexible spring sheet to compress the positioning rod in the flexible spring sheet.

2. The mounting bracket according to claim 1, characterized in that: The mounting frame further comprises a base disposed at the bottom of the base body, and the base is used to increase the contact area between the base body and the optical platform; The base has a through hole for mounting the base on the optical platform.

3. The mounting bracket according to claim 2, characterized in that: The through hole is an oblong limiting hole, the base is installed on the optical platform through a limiting member passing through the limiting hole, and the base can slide along the limiting member through the limiting hole, so that the mounting frame slides relative to the optical platform.

4. The mounting bracket according to claim 1, characterized in that: The clamping assembly further comprises a limiting column, which is arranged on the base body and is used for abutting against the free end of the flexible spring sheet and limiting the position of the flexible spring sheet.

5. The mounting bracket according to claim 1, characterized in that: The inner wall of the positioning hole relative to the second fastening hole also has at least two protrusions arranged at intervals, and the second fastener cooperates with the protrusions to position and fix the positioning rod.

6. The mounting bracket according to any one of claims 1 to 5, characterized in that: The mounting hole is a threaded hole, and the mounting hole is used for an optical element with an external thread.

7. The mounting bracket according to any one of claims 1 to 5, characterized in that: The mounting hole is a light hole, and the mounting plate also has a third fastening hole, which is located on the peripheral side of the mounting hole and is connected to the mounting hole. The third fastening hole is used to install a third fastener so that the third fastener abuts against the optical element to fix the optical element.

8. The mounting bracket according to claim 7, characterized in that: The inner wall of the mounting hole opposite to the third fastening hole also has at least two protrusions arranged at intervals, and the third fastening member and the at least two protrusions are used to position and fasten the guide rod.

9. A coaxial optical system, characterized in that: comprising an optical platform, at least one positioning rod, an optical element, and a plurality of mounting brackets according to any one of claims 1 to 8; A plurality of mounting frames are mounted on the optical platform and positioned by at least one positioning rod. The optical element is mounted in the mounting hole of the mounting frame. The plurality of mounting frames are used to mount the optical element of at least one size.

10. The coaxial optical system according to claim 9, characterized in that: A plurality of the mounting frames are arranged in a row at intervals.

11. The coaxial optical system according to claim 9, characterized in that: The coaxial optical system further comprises a steering adjustment frame, which is used to connect at least two rows of mounting frames, and has an optical deflection element for deflecting the optical path.

12. The coaxial optical system according to claim 11, characterized in that: The steering adjustment frame has at least two fixing holes, the axes of the at least two fixing holes are coaxial with the axes of the positioning holes of at least two rows of the mounting frame, and the fixing holes are used to install the positioning rods; The bottom of the steering adjustment frame also has a fixing seat, and the steering adjustment frame is installed on the optical platform through the fixing seat.

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