An adjustable optical prism

Abstract

The present invention discloses an adjustable optical prism, comprising three optical lenses distributed in a triangular shape, an upper fixing plate and a lower fixing plate located at the top and bottom of the optical lenses, and a base for supporting the optical lenses, wherein the optical lenses are fixed in an inner frame of a fixing frame, the fixing frame is arranged parallel to a back plate, a group of first fixing seats are fixed to the back of the fixing frame, a second rotating rod is fixedly connected between two of the fixing seats, a group of second fixing seats are protruded on one side of the back plate facing the optical lenses, and a transmission rod connected to the bearing thereof passes through the back plate. In the adjustable optical prism of the present invention, the three optical lenses are distributed in a triangular shape, so that they can be formed into a triangular prism, which can refract three light paths, and because the three optical lenses are split-type designs, they can be adjusted individually or as a whole, thereby increasing the overall scope of application and facilitating popularization and use.

Description

Technical Field

[0001] The present invention relates to the technical field of optical prisms, and in particular to an adjustable optical prism. Background Art

[0002] As an important optical component, optical prism is widely used in various optical instruments. Its main function is to refract light through a polished plane, change the propagation direction of light or separate light beams. With the advancement of optical technology, the application scenarios of prisms are constantly expanding, and their accuracy and adjustment capabilities are becoming increasingly important.

[0003] The prism device in the prior art usually adjusts the light path by rotating the prism as a whole. Such devices, such as the curved reflective optical prism disclosed in patent CN217879787U, have certain adjustment functions, but have the following main shortcomings: first, such prisms can only be rotated in the vertical direction during adjustment, which limits their application in complex light path adjustment; second, when it is necessary to adjust a certain surface angle of the prism separately, the prior art is difficult to achieve, and can only rely on the combination of multiple prisms to complete, resulting in complex operation and inconvenience in use. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] Therefore, the object of the present invention is to provide an adjustable optical prism, comprising three optical lenses distributed in a triangular shape, an upper fixing plate and a lower fixing plate located at the top and bottom ends of the optical lenses, and a base for supporting the optical lenses.

[0006] The bottom plate and the base are integrally formed, and a mounting hole is provided on the base, so that a bolt can be screwed into the mounting hole to fix the base to the device, thereby realizing the installation and fixation of the optical lens.

[0007] The optical lens is fixed in the inner frame of the fixed frame, the fixed frame is arranged parallel to the back plate, a group of first fixing seats are fixed on the back of the fixed frame, a second rotating rod is fixedly connected between the two fixing seats, a group of second fixing seats is formed by protruding on the side of the back plate facing the optical lens, a transmission rod connected to its bearing passes through the back plate, a worm gear is fixed to one end of the transmission rod by a bayonet, a meshing bevel gear is fixed to the other end of the transmission rod and the second rotating rod by a bayonet, the second rotating rod passes through the second fixing seat and is connected to the second fixing seat bearing,

[0008] A circular hole is formed on the base, a bottom plate is arranged inside the hole, a column connected to its bearing is passed through the center of the bottom plate, and the top of the column passes through the center of the upper fixing plate and the lower fixing plate.

[0009] The top and bottom ends of the back of the back plate are integrally formed with a first rotating seat, and an upper rotating shaft and a lower rotating shaft are respectively passed through the two first rotating seats, the bottom end of the lower rotating shaft passes through the lower fixed plate and is connected to the lower fixed plate bearing, the upper fixed plate is provided with a through hole for the upper rotating shaft to penetrate, and the upper rotating shaft is connected to the through hole bearing,

[0010] A set of second rotating seats is integrally formed on the back of the back plate between the two first rotating seats, and a worm meshing with the worm wheel is arranged between the two second rotating seats.

[0011] The top surface of the upper fixed plate is integrally formed with three groups of vertical plates, each group of the vertical plates is provided with a first rotating rod, and sleeves are fixedly bonded to the opposite ends of the two first rotating rods, and a rotating column connected to its bearing is inserted into the sleeve, and the rotating column is used to drive the upper rotating shaft and the worm to rotate.

[0012] The lower fixing plate is located in the hole groove, and the outer circular wall of the lower fixing plate is connected to the groove wall bearing of the hole groove.

[0013] The upright column, the upper rotating shaft and the worm are all provided with locking mechanisms.

[0014] As the preferred technical solution:

[0015] As described above, in the adjustable optical prism, the two ends of the sleeve are sleeved with second rings fixedly bonded thereto, the surface of the second ring is engraved with scale lines, and the side walls at both ends of the rotating column and the surface of the lower fixed plate are integrally formed with marking strips.

[0016] Through the above technical solution, the top surface of the base is engraved with scale lines, so that when the lower fixed plate rotates, it can drive the marking bar thereon to rotate, and when the sleeve rotates, it can drive the marking bar thereon to rotate. In this way, the marking bar and the dial can be rotated to a specified angle, which facilitates adjustment and ensures adjustment accuracy.

[0017] In an adjustable optical prism as described above, the locking mechanism on the column includes a third vertical rod running through the column, and a pressing plate and a fourth ring fixed to both ends of the third vertical rod, the pressing plate and the third vertical rod are fixedly bonded by a third spring, the third spring is sleeved on the third vertical rod, the top surface of the fourth ring extends vertically upward to form a plurality of limiting columns distributed in a ring, and the top ends of the limiting columns are tightly pressed against the bottom surface of the base plate.

[0018] Through the above technical solution, the pressing plate and the fourth ring are fixedly bonded to the third vertical rod, or formed as one piece, thereby improving the structural strength of the pressing plate, the fourth ring and the third vertical rod. In this way, when the pressing plate is pressed again, the limiting column on the fourth ring can be driven downward synchronously through the third vertical rod.

[0019] In the adjustable optical prism as described above, the locking mechanism on the upper rotating shaft comprises a vertical tube penetrating the vertical tube, a first limiting sleeve and a first ring located at both ends of the vertical tube, and a limiting ring tightly pressed against the first ring, the bottom surface of the first limiting sleeve is in an inverted cone shape, the inner circle of the limiting ring is in a cone shape, and the outer circle of the limiting ring is fixedly bonded to the hole wall of the through hole,

[0020] The first sleeve ring is fixedly bonded to the bottom surface of the upper rotating shaft through a first spring, and the first spring is sleeved on the vertical pipe.

[0021] Through the above technical solution, the first limiting sleeve and the first ring are both mounted on both ends of the vertical pipe. The first limiting sleeve, the first ring and the vertical pipe will be subject to the rebound force of the first spring when moving. Then, the three are fixed and bonded, or integrally formed, which can improve the overall structural strength and avoid scattering.

[0022] In the adjustable optical prism as described above, the locking mechanism on the worm comprises a second vertical rod penetrating the worm, a first vertical rod penetrating the second vertical rod, and a second limiting sleeve and a third sleeve ring located at the middle section and the bottom end of the first vertical rod, the two ends of the second vertical rod are movably connected to the second rotating seat bearing, the top end of the second vertical rod is conical, and the bottom surface of the second limiting sleeve is provided with a conical groove,

[0023] The top surface of the third ring is fixedly bonded to the top end of the second vertical rod through a second spring, and the second spring is sleeved on the first vertical rod.

[0024] Through the above technical scheme, the worm gear and the second vertical rod are fixedly bonded, so that the two can rotate synchronously, the second limit sleeve and the third ring are both mounted on the first vertical rod, and the second limit sleeve, the third ring and the first vertical rod will be subject to the rebound force of the second spring when moving, and then the three are fixedly bonded, or integrally formed, which can improve the overall structural strength and avoid scattering.

[0025] In the adjustable optical prism as described above, the cross-sections of the vertical tube, the first vertical rod and the third vertical rod are all rectangular, the outer wall of the vertical tube is slidingly fitted with the upper rotating shaft, the outer wall of the first vertical rod is slidingly fitted with the vertical tube and the second vertical rod, and the outer wall of the third vertical rod is slidingly fitted with the column.

[0026] Through the above technical solution, the cross-sectional shapes of the vertical pipe, the first vertical rod and the third vertical rod are designed so that torque can be transmitted between the vertical pipe and the upper rotation axis, between the first vertical rod and the second vertical rod, and between the third vertical rod and the column, and the structure is reasonable.

[0027] In the adjustable optical prism as described above, the top surface of the first limit sleeve and the top surface of the first vertical rod are both magnetic, the magnetic poles of the top surfaces of the first limit sleeve and the first vertical rod are opposite, both ends of the rotating column are magnetic, and the magnetic poles of the two ends of the rotating column are opposite,

[0028] The two ends of the rotating column are convex, the top end of the first limiting sleeve is concave, and the top end of the first vertical rod is concave.

[0029] Through the above technical solution, the recessed parts of the first limit sleeve and the first vertical rod are adapted to the protruding parts of the rotating column. This design can increase the contact surface between the two ends of the rotating column and the first limit sleeve and the first vertical rod, thereby increasing the magnetic attraction strength and ensuring that under the action of the magnetic force, torque can be transmitted between the two ends of the rotating column and the first limit sleeve and the first vertical rod, that is, the rotating column can drive the first limit sleeve and the first vertical rod to rotate axially.

[0030] In the adjustable optical prism as described above, the upper fixing plate and the lower fixing plate are both fixedly bonded to the column, the upper rotating shaft and the lower rotating shaft are both fixedly bonded to the first rotating seat, and the upper rotating shaft and the lower rotating shaft share a common axis.

[0031] Through the above technical solution, when the column rotates, it can drive the upper fixed plate and the lower fixed plate to rotate synchronously, and then drive the three optical lenses between the upper fixed plate and the lower fixed plate to rotate together; the lower rotating shaft can rotate axially on the lower fixed plate, so that the upper rotating shaft and the lower rotating shaft can drive a back plate to rotate independently.

[0032] In the adjustable optical prism as described above, an axial hole is opened on the side of the vertical plate, a rubber ring is sleeved on one end of the first rotating rod, one end of the first rotating rod extends into the axial hole, and the outer circular wall of the rubber ring is tightly pressed against the inside of the axial hole.

[0033] Through the above technical solution, the first rotating rod can rotate axially in the shaft hole, so that the sleeve can rotate between the two vertical plates, and a rubber ring is provided so that the first rotating rod has a certain resistance when rotating. In this way, when the adjustment is completed, the rotating column can rotate to a horizontal state and remain fixed under the friction resistance of the rubber ring.

[0034] Compared with the prior art, the present invention has at least the following beneficial effects:

[0035] (1) Multiple optical paths independent and overall adjustment capability: The adjustable optical prism proposed by the present invention forms a prism structure by distributing three optical lenses in a triangular shape, so that each optical lens can independently refract its own optical path. In addition, the split design of the three lenses not only allows independent adjustment of a single lens, but also supports synchronous adjustment of the whole, thereby significantly improving the applicability of the device, meeting the needs of diversified optical path adjustment, and facilitating promotion and application in different scenarios.

[0036] (2) Flexibility of multi-directional adjustment: The present invention introduces the design of a back plate and a rotating shaft. The upper rotating shaft and the lower rotating shaft configured on the back plate can drive the optical lens to swing left and right. At the same time, through the transmission mechanism of the worm gear and the worm, the optical lens can also be adjusted to swing up and down. The addition of the column further allows the synchronous rotation of the three optical lenses, realizing the flexible adjustment of the optical path in multiple directions, which is particularly suitable for the precise adjustment of complex optical path systems.

[0037] (3) Enhanced stability and safety: To prevent the problem of spontaneous rotation after adjustment, the present invention provides a locking mechanism on the upper rotating shaft, worm and column. This design can automatically lock the optical lens after adjustment, ensure the stability of the adjustment position, avoid optical path deviation caused by lens self-rotation, and thus improve the reliability and accuracy of the adjustment operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which

[0039] Figure 1 A top view of the present invention;

[0040] Figure 2 For the present invention Figure 1 Middle AA section view;

[0041] Figure 3 It is a stereoscopic diagram of the optical lens, the upper fixing plate and the lower fixing plate of the present invention;

[0042] Figure 4 A top view of the lower fixing plate and the back plate of the present invention;

[0043] Figure 5 For the present invention Figure 2 Enlarged view of point B;

[0044] Figure 6 For the present invention Figure 2 Enlarged view of point C in the middle;

[0045] Figure 7 A three-dimensional diagram of the sleeve and the rotating column of the present invention;

[0046] Figure 8 It is a front view of the back plate, upper rotating shaft and worm of the present invention.

[0047] In the figure: 1, optical lens; 2, base; 3, upper fixed plate; 4, lower fixed plate; 5, bottom plate; 6, column; 7, fixed frame; 8, back plate; 9, first rotating seat; 10, upper rotating shaft; 11, lower rotating shaft; 12, vertical pipe; 13, first vertical rod; 14, first limiting sleeve; 15, limiting ring; 16, first ring; 17, vertical plate; 18, sleeve; 19, rotating column; 20, first rotating rod; 21, second ring; 22, marking strip; 23, worm gear; 24, worm; 25, second vertical rod; 26, second rotating seat; 27, second limiting sleeve; 28, third ring; 29, transmission rod; 30, second rotating rod; 31, pressing plate; 32, first spring; 33, second spring; 34, third spring; 35, fourth ring; 36, limiting column; 37, third vertical rod; 38, through hole. DETAILED DESCRIPTION

[0048] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0049] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0050] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the embodiment of the present invention discloses an adjustable optical prism, comprising three optical lenses 1 distributed in a triangle, an upper fixing plate 3 and a lower fixing plate 4 located at the top and bottom ends of the optical lenses 1, and a base 2 for supporting the optical lenses 1.

[0051] The optical lens 1 is fixed in the inner frame of the fixed frame 7, and the fixed frame 7 is arranged parallel to the back plate 8. A group of first fixed seats are fixed on the back of the fixed frame 7, and a second rotating rod 30 is fixedly connected between the two fixed seats. The back plate 8 protrudes on one side facing the optical lens 1 to form a group of second fixed seats. A transmission rod 29 connected to its bearing passes through the back plate 8, and a worm gear 23 is fixed to one end of the transmission rod 29 by a pin, and a meshing bevel gear is fixed to the other end of the transmission rod 29 and the second rotating rod 30 by a pin. The second rotating rod 30 passes through the second fixed seat and is connected to the second fixed seat bearing.

[0052] The optical lens 1 is fixed in the fixed frame 7 by means of snap-fit, bolts, etc., so that it can be detachably replaced. Different optical lenses 1 can be replaced according to the usage scenario. The second rotating rod 30 can rotate axially on the second fixed seat. When the worm gear 23 drives the transmission rod 29 to rotate axially, the transmission rod 29 can drive the second rotating rod 30 to rotate axially through the bevel gear. The second rotating rod 30 can drive the fixed frame 7 to swing up and down through the first fixed seat, and then the fixed frame 7 can drive the optical lens 1 to swing up and down for adjustment.

[0053] like Figure 1 and Figure 2 As shown, in this embodiment, a circular hole groove is opened on the base 2, and a bottom plate 5 is arranged inside the hole groove. A column 6 connected to its bearing passes through the center of the bottom plate 5, and the top of the column 6 passes through the center of the upper fixed plate 3 and the lower fixed plate 4. The upper fixed plate 3 and the lower fixed plate 4 are both fixedly bonded to the column 6, and the upper rotating shaft 10 and the lower rotating shaft 11 are both fixedly bonded to the first rotating seat 9, and the upper rotating shaft 10 and the lower rotating shaft 11 are coaxial;

[0054] The lower fixing plate 4 is located in the hole groove, and the outer circular wall of the lower fixing plate 4 is connected to the groove wall bearing of the hole groove. The locking mechanism on the column 6 includes a third vertical rod 37 that runs through itself, and a pressing plate 31 and a fourth ring 35 fixed at both ends of the third vertical rod 37. The pressing plate 31 and the third vertical rod 37 are fixed and bonded by a third spring 34. The third spring 34 is sleeved on the third vertical rod 37. The top surface of the fourth ring 35 extends vertically upward to form a plurality of limiting columns 36 distributed in a ring shape. The top end of the limiting column 36 is tightly pressed against the bottom surface of the bottom plate 5.

[0055] When it is necessary to drive the three optical lenses 1 to rotate synchronously, the pressing plate 31 can be pressed downward. Since the outer wall of the third vertical rod 37 is slidably fitted with the column 6, that is, they can slide relatively, the pressing plate 31 can drive the fourth ring 35 to move downward synchronously through the third vertical rod 37. After moving downward, the fourth ring 35 can drive the limiting column 36 to separate from the bottom plate 5. Since the cross section of the third vertical rod 37 is rectangular, when the pressing plate 31 is twisted, the pressing plate 31 can drive the column 6 to rotate synchronously axially through the third vertical rod 37, thereby driving the upper fixing plate 3 and the lower fixing plate 4 to rotate.

[0056] After the adjustment is completed, the pressing plate 31 can be released. At this time, the compressed third spring 34 restores its natural length. Under the elastic force of the third spring 34, the limiting column 36 can be reset through the fourth ring 35, so that the limiting column 36 is re-engaged with the bottom plate 5. The friction force generated by the tight contact can limit the column 6 to prevent the column 6 from rotating.

[0057] like Figure 1 , Figure 2 and Figure 7As shown, in the present embodiment, three groups of vertical plates 17 are integrally formed on the top surface of the upper fixed plate 3, and a first rotating rod 20 is arranged on each group of vertical plates 17, and a sleeve 18 is fixedly bonded at the opposite end of the two first rotating rods 20, and a rotating column 19 connected to its bearing is inserted into the sleeve 18, and the rotating column 19 is used to drive the upper rotating shaft 10 and the worm 24 to rotate. An axial hole is opened on the side of the vertical plate 17, and a rubber ring is sleeved at one end of the first rotating rod 20, and one end of the first rotating rod 20 extends into the axial hole, and the outer circular wall of the rubber ring is tightly pressed against the inside of the axial hole. The top surface of the first limiting sleeve 14 and the top surface of the first vertical rod 13 are both magnetic, and the top poles of the first limiting sleeve 14 and the first vertical rod 13 are opposite, and both ends of the rotating column 19 are magnetic, and the two ends of the rotating column 19 are opposite. The two ends of the rotating column 19 are convex, the top end of the first limiting sleeve 14 is concave, and the top end of the first vertical rod 13 is concave.

[0058] Since the first rotating rod 20 can rotate between the vertical plates 17 through the axial hole, the sleeve 18 can be flipped up and down between the two vertical plates 17. By flipping the sleeve 18, the two ends of the rotating column 19 can be switched to cooperate with the first limiting sleeve 14 and the first vertical rod 13. The magnetic poles of the bottom end of the rotating column 19 and the top surface of the first limiting sleeve 14 are opposite, and are consistent with the magnetic poles of the bottom end of the first vertical rod 13, so that the first limiting sleeve 14 will be magnetically attracted, and the first vertical rod 13 will be subject to repulsion. When the top end of the rotating column 19 rotates downward, the magnetic poles of the top end of the rotating column 19 and the top surface of the first limiting sleeve 14 are consistent, and are opposite to the magnetic poles of the bottom end of the first vertical rod 13, so that the first vertical rod 13 will be magnetically attracted, and the first limiting sleeve 14 will be subject to repulsion.

[0059] like Figure 2 , Figure 4 , Figure 5 and Figure 8 As shown, in this embodiment, the top and bottom ends of the back side of the back plate 8 are integrally formed with a first rotating seat 9, and the two first rotating seats 9 are respectively penetrated by an upper rotating shaft 10 and a lower rotating shaft 11, the bottom end of the lower rotating shaft 11 penetrates the lower fixed plate 4 and is bearing-connected with the lower fixed plate 4, a through hole 38 is opened on the upper fixed plate 3 for the upper rotating shaft 10 to penetrate, and the upper rotating shaft 10 is bearing-connected with the through hole 38, and the locking mechanism on the upper rotating shaft 10 includes a vertical pipe 12 penetrating itself, and a first limiting sleeve 14 and a first ring 16 located at both ends of the vertical pipe 12, and a limiting ring 15 pressed against the first ring 16, the bottom surface of the first limiting sleeve 14 is inverted cone shape, the inner circle of the limiting ring 15 is conical, the outer circle of the limiting ring 15 is fixedly bonded to the hole wall of the through hole 38, the first ring 16 is fixedly bonded to the bottom surface of the upper rotating shaft 10 through a first spring 32, and the first spring 32 is sleeved on the vertical pipe 12.

[0060] When the bottom end of the rotating column 19 rotates downward, the first limiting sleeve 14 will move upward under magnetic adsorption until it fits with the bottom end of the rotating column 19, and then, under the action of the magnetic force, the rotating column 19 can be manually twisted to drive the first limiting sleeve 14 to rotate synchronously. Since the cross section of the vertical tube 12 is rectangular, when the first limiting sleeve 14 rotates, it will drive the upper rotating shaft 10 to rotate through the vertical tube 12, and then the upper rotating shaft 10 and the lower rotating shaft 11 drive the back plate 8 to rotate and adjust through the first rotating seat 9, so that the back plate 8 drives the optical lens 1 to swing horizontally synchronously through the fixed frame 7.

[0061] Since the outer wall of the vertical pipe 12 and the upper rotating shaft 10 are in sliding fit, the first limiting sleeve 14 will drive the vertical pipe 12 to move synchronously when it moves upward, and the first spring 32 will be compressed when the vertical pipe 12 drives the first ring 16 to move. When the first limiting sleeve 14 is offset from the bottom end of the rotating column 19, the magnetic force disappears, and the first spring 32 recovers its deformation. Under the elastic force of the first spring 32, the first limiting sleeve 14 is driven to reset through the first ring 16 and the vertical pipe 12, so that the first limiting sleeve 14 is pressed against the limiting ring 15 again, and the friction force generated by the pressing can limit the upper rotating shaft 10 to prevent the upper rotating shaft 10 from rotating.

[0062] like Figure 2 , Figure 4 , Figure 6 and Figure 8 As shown, in the present embodiment, a group of second rotating seats 26 are integrally formed on the back side of the back plate 8 between the two first rotating seats 9, a worm 24 meshing with the worm wheel 23 is arranged between the two second rotating seats 26, the locking mechanism on the worm 24 includes a second vertical rod 25 penetrating through the worm 24, and a first vertical rod 13 penetrating through the second vertical rod 25, and a second limiting sleeve 27 and a third ring 28 located at the middle section and the bottom end of the first vertical rod 13, the two ends of the second vertical rod 25 are movably connected with the bearings of the second rotating seat 26, the top end of the second vertical rod 25 is conical, the bottom surface of the second limiting sleeve 27 is provided with a conical groove, the top surface of the third ring 28 is fixedly bonded to the top end of the second vertical rod 25 through a second spring 33, and the second spring 33 is sleeved on the first vertical rod 13.

[0063] When the top of the rotating column 19 rotates downward, since the outer wall of the first vertical rod 13 is slidingly fitted with the vertical tube 12 and the second vertical rod 25, the first vertical rod 13 will move upward under magnetic attraction and fit with the top of the rotating column 19, and then, under the action of the magnetic force, the first vertical rod 13 can be driven to rotate synchronously by manually twisting the rotating column 19. Since the cross-section of the first vertical rod 13 is rectangular, the first vertical rod 13 can drive the worm 24 to rotate through the second vertical rod 25, and then the worm 24 can drive the worm wheel 23 to rotate. After the worm wheel 23 rotates, it can drive the optical lens 1 to swing up and down for adjustment;

[0064] When the first vertical rod 13 moves upward, the second spring 33 will be compressed by the third ring 28. When the top of the rotating column 19 is offset from the first vertical rod 13, the magnetic force disappears, and the second spring 33 recovers its deformation. Under the elastic force of the second spring 33, the first vertical rod 13 is driven to reset through the third ring 28. At this time, the second limiting sleeve 27 on the first vertical rod 13 is pressed against the top of the second vertical rod 25 again. The friction force generated by the pressing can prevent the second vertical rod 25 from rotating on the second rotating seat 26.

[0065] The limiting column 36, the first limiting sleeve 14 and the second limiting sleeve 27 are all made of a material with a high friction coefficient, such as rubber, so that the friction force generated when pressing against each other can be increased.

[0066] like Figure 7 As shown, in this embodiment, both ends of the sleeve 18 are sleeved with second rings 21 fixedly bonded thereto, and scale lines are engraved on the surface of the second ring 21. The side walls at both ends of the rotating column 19 and the surface of the lower fixed plate 4 are integrally formed with marking strips 22.

[0067] Scale lines and marking strips 22 are provided at both ends of the rotating column 19, so that no matter which end of the rotating column 19 is rotated downward, the scale lines and marking strips 22 can be seen, and then the scale lines and marking strips 22 can be installed to adjust the specified angle, thereby ensuring the accuracy and efficiency of the adjustment.

[0068] In the description of this specification, "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0070] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An adjustable optical prism, comprising three optical lenses (1) distributed in a triangular shape, an upper fixing plate (3) and a lower fixing plate (4) located at the top and bottom ends of the optical lenses (1), and a base (2) for supporting the optical lenses (1), characterized in that: The optical lens (1) is fixed in an inner frame of a fixed frame (7); the fixed frame (7) is arranged parallel to the back plate (8); a group of first fixed seats are fixed on the back of the fixed frame (7); a second rotating rod (30) is fixedly connected between the two fixed seats; a group of second fixed seats is formed by protruding on one side of the back plate (8) facing the optical lens (1); a transmission rod (29) connected to its bearing passes through the back plate (8); a worm gear (23) is fixed to one end of the transmission rod (29) by a bayonet; a meshing bevel gear is fixed to the other end of the transmission rod (29) and the second rotating rod (30) by a bayonet; the second rotating rod (30) passes through the second fixed seat and is connected to the second fixed seat bearing. The base (2) is provided with a circular hole, a bottom plate (5) is arranged inside the hole, a column (6) connected to its bearing passes through the center of the bottom plate (5), and the top of the column (6) passes through the center of the upper fixing plate (3) and the lower fixing plate (4). The top and bottom ends of the back side of the back plate (8) are integrally formed with a first rotating seat (9), an upper rotating shaft (10) and a lower rotating shaft (11) are respectively passed through the two first rotating seats (9), the bottom end of the lower rotating shaft (11) passes through the lower fixed plate (4) and is connected to the bearing of the lower fixed plate (4), the upper fixed plate (3) is provided with a through hole (38) for the upper rotating shaft (10) to pass through, and the upper rotating shaft (10) is connected to the through hole (38) with a bearing, A group of second rotating seats (26) is integrally formed on the back of the back plate (8) between the two first rotating seats (9), and a worm (24) meshing with the worm wheel (23) is provided between the two second rotating seats (26). The top surface of the upper fixed plate (3) is integrally formed with three groups of vertical plates (17), each group of the vertical plates (17) is provided with a first rotating rod (20), two opposite ends of the first rotating rods (20) are fixedly bonded with sleeves (18), a rotating column (19) connected to a bearing thereof is inserted into the sleeve (18), and the rotating column (19) is used to drive the upper rotating shaft (10) and the worm (24) to rotate. The lower fixing plate (4) is located in the hole groove, and the outer circular wall of the lower fixing plate (4) is connected to the groove wall bearing of the hole groove. The upright column (6), the upper rotating shaft (10) and the worm (24) are all provided with locking mechanisms.

2. The adjustable optical prism according to claim 1, characterized in that: The two ends of the sleeve (18) are sleeved with second sleeve rings (21) fixedly bonded thereto, and the surface of the second sleeve ring (21) is engraved with scale lines. The side walls at both ends of the rotating column (19) and the surface of the lower fixed plate (4) are integrally formed with marking strips (22).

3. The adjustable optical prism according to claim 1, characterized in that: The locking mechanism on the column (6) comprises a third vertical rod (37) penetrating the column, and a pressing plate (31) and a fourth sleeve ring (35) fixed to both ends of the third vertical rod (37); the pressing plate (31) and the third vertical rod (37) are fixedly bonded via a third spring (34); the third spring (34) is sleeved on the third vertical rod (37); the top surface of the fourth sleeve ring (35) extends vertically upward to form a plurality of limiting columns (36) distributed in an annular shape; the top ends of the limiting columns (36) are tightly pressed against the bottom surface of the bottom plate (5).

4. The adjustable optical prism according to claim 3, characterized in that: The locking mechanism on the upper rotating shaft (10) comprises a vertical tube (12) penetrating the vertical tube (12), a first limiting sleeve (14) and a first ring (16) located at two ends of the vertical tube (12), and a limiting ring (15) tightly abutting against the first ring (16), wherein the bottom surface of the first limiting sleeve (14) is in an inverted cone shape, the inner circle of the limiting ring (15) is in a cone shape, and the outer circle of the limiting ring (15) is fixedly bonded to the hole wall of the through hole (38). The first sleeve ring (16) is fixedly bonded to the bottom surface of the upper rotating shaft (10) via a first spring (32), and the first spring (32) is sleeved on the vertical pipe (12).

5. The adjustable optical prism according to claim 4, characterized in that: The locking mechanism on the worm (24) comprises a second vertical rod (25) penetrating the worm (24), a first vertical rod (13) penetrating the second vertical rod (25), and a second limiting sleeve (27) and a third sleeve ring (28) located at the middle section and the bottom end of the first vertical rod (13). The two ends of the second vertical rod (25) are movably connected to the bearing of the second rotating seat (26). The top end of the second vertical rod (25) is conical, and the bottom surface of the second limiting sleeve (27) is provided with a conical groove. The top surface of the third sleeve ring (28) is fixedly bonded to the top end of the second vertical rod (25) via a second spring (33), and the second spring (33) is sleeved on the first vertical rod (13).

6. The adjustable optical prism according to claim 5, characterized in that: The cross-sections of the vertical tube (12), the first vertical rod (13) and the third vertical rod (37) are all rectangular; the outer wall of the vertical tube (12) is in sliding contact with the upper rotating shaft (10); the outer wall of the first vertical rod (13) is in sliding contact with the vertical tube (12) and the second vertical rod (25); and the outer wall of the third vertical rod (37) is in sliding contact with the column (6).

7. The adjustable optical prism according to claim 5, characterized in that: The top surface of the first limiting sleeve (14) and the top surface of the first vertical rod (13) are both magnetic, the magnetic poles of the top surfaces of the first limiting sleeve (14) and the first vertical rod (13) are opposite, and both ends of the rotating column (19) are magnetic, the magnetic poles of the two ends of the rotating column (19) are opposite.

8. The adjustable optical prism according to claim 7, characterized in that: The two ends of the rotating column (19) are convex, the top end of the first limiting sleeve (14) is concave, and the top end of the first vertical rod (13) is concave.

9. The adjustable optical prism according to claim 1, characterized in that: The upper fixed plate (3) and the lower fixed plate (4) are both fixedly bonded to the column (6), the upper rotating shaft (10) and the lower rotating shaft (11) are both fixedly bonded to the first rotating seat (9), and the upper rotating shaft (10) and the lower rotating shaft (11) are coaxial.

10. The adjustable optical prism according to claim 1, characterized in that: A shaft hole is provided on the side of the vertical plate (17), a rubber ring is sleeved on one end of the first rotating rod (20), one end of the first rotating rod (20) extends into the shaft hole, and the outer circular wall of the rubber ring is tightly abutted against the inside of the shaft hole.

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