Prism structure and assembling method thereof

Abstract

The invention discloses a prism structure and an assembling method thereof, the prism structure comprises a prism frame, a ridge prism, a half-house prism, a floating partition plate and fixing screws, the ridge prism and the half-house prism are both arranged on the prism frame, the prism frame comprises a base and two side plates, the end parts of the side plates are arranged on the end face of the base, the floating partition plate is arranged between the two side plates, and the fixing screws are arranged on the base. The side plates are provided with through holes, the fixing screws penetrate through the through holes in the side plates and then are screwed in the side portions of the floating partition plate, the floating partition plate can rotate between the two side plates with the fixing screws as axes, and the roof prism and the half-house prism are arranged between the two side plates and located on the two sides of the floating partition plate respectively. According to the prism structure, through the floating partition plate capable of rotating freely between the two side plates, the problem that in the prior art, optical parameters are poor due to part machining errors or prism assembly errors is solved, and the part machining precision requirement and the assembly difficulty are lowered.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of prism, in particular to a prism structure and an assembling method thereof. BACKGROUND

[0002] In most short optical systems, two prisms (such as roof prism and half roof prism) are usually required to be assembled for the purpose of forming a positive image and shortening the optical path. In such optical systems, the prism assembling requires a very high accuracy, and the prisms must be assembled to the specified position and angle, otherwise the imaging quality and the imaging position will be greatly affected, thus requiring a high accuracy of the parts and a strict assembling of the prisms.

[0003] Most prisms are processed by optical grinding and polishing process, thus the error of the prism parts can be controlled within a very small error range. However, due to the influence of tool wear, clamping error and machine precision, the size of the parts cannot be guaranteed, thus a high-precision processing equipment and a customized fixture are required for processing the metal frame, resulting in a high cost of the parts. The existing metal frame for fixing the prisms is usually made into an integrated structure. However, since the partition plate in the metal frame needs to be attached to the mirror surface of the two prisms, for example, the partition plate needs to have a 48° angle with the end surface of the metal frame, thus the metal frame cannot be processed at one time and needs to be repeatedly clamped and processed, which inevitably causes a size processing error and results in a low processing efficiency of the metal frame, thus affecting the assembling efficiency of the prisms and the metal frame. SUMMARY

[0004] The present application provides a prism structure and an assembling method thereof to solve at least one of the above technical problems.

[0005] According to an aspect of the present application, a prism structure is provided, which comprises a prism frame, a roof prism and a half roof prism, the roof prism and the half roof prism are arranged on the prism frame, and further comprises a floating partition plate and a fixing screw. The prism frame comprises a base and two parallel arranged side plates, the end of the side plate is arranged on the end surface of the base, the first light hole is arranged on the base, the floating partition plate is arranged between the two side plates, the second light hole is arranged on the floating partition plate, the through hole is arranged on the side plate, and the fixing screw is arranged in the side of the floating partition plate after penetrating through the through hole of the side plate. The floating partition plate can rotate around the fixing screw between the two side plates. The roof prism and the half roof prism are arranged between the two side plates and located on the two sides of the floating partition plate respectively. The first side surface of the roof prism is attached to the base, the second side surface of the roof prism is attached to the floating partition plate, the third side surface of the half roof prism is attached to the prism frame, and the fourth side surface of the half roof prism is attached to the floating partition plate.

[0006] The prism structure of the present application realizes the functions of normal image and shortening of optical path of the optical system through the first light hole on the prism frame, the ridge prism, the second light hole on the floating partition plate and the half-roof prism. When assembling the prism structure, the floating partition plate is installed between the two side plates through the fixing screws. The floating partition plate can be randomly rotated between the two side plates with the fixing screws as the shaft. At this time, the ridge prism is assembled first. The ridge prism is installed between the two side plates. The first side of the ridge prism is pushed to be attached to the base. The second side of the ridge prism is attached to one side of the floating partition plate. The ridge prism is assembled in place. Next, the half-roof prism is assembled. The half-roof prism is installed between the two side plates. The third side of the half-roof prism is pushed to be attached to the prism frame. The fourth side of the half-roof prism is attached to the other side of the floating partition plate. The half-roof prism is assembled in place. In the assembly process, since the floating partition plate can be randomly rotated between the two side plates, the floating partition plate will automatically return to the attached state with the ridge prism after the ridge prism is pushed to be attached in place, thereby avoiding assembly errors. The prism structure of the present application divides the floating partition plate and the prism frame into two independent components and processes them separately, thereby simplifying the processing and clamping problems. Through the floating partition plate which can be randomly rotated between the two side plates, the problem of poor optical parameters caused by part processing errors or prism assembly errors in the traditional way is solved. The processing precision requirement and assembly difficulty of the parts are reduced, thereby improving the processing efficiency of the prism frame and the assembly efficiency of the prism and the prism frame.

[0007] Preferably, the number of fixing screws is two. The two side plates are each provided with a through hole with the same axis. The two fixing screws are respectively inserted through the through holes of the two side plates and screwed in the side part of the floating partition plate.

[0008] Therefore, when the floating partition plate is installed between the two side plates through the two fixing screws, the floating partition plate can be stably and randomly rotated between the two side plates with the two fixing screws as the shaft. During assembly, the floating partition plate will automatically return to the attached state with the ridge prism after the ridge prism is pushed to be attached in place, thereby avoiding assembly errors. When the prism frame and the floating partition plate are processed, the two threaded holes on the floating partition plate which are adapted to the two fixing screws can be directly processed after the prism frame and the floating partition plate are formed by turning and milling. As long as the two threaded holes have the same axis, the error caused by the deviation of the second clamping hole is avoided.

[0009] Preferably, the axis of the fixing screw intersects with the axis of the first light hole.

[0010] Therefore, when the prism frame and the floating partition are processed, the prism frame and the floating partition are formed by turning, and then the threaded holes on the floating partition which are matched with the fixing screws are directly processed, thereby avoiding the error caused by the deviation of the hole clamping twice, the deviation of the positioning of the floating partition, and the deviation of the installation of the ridge prism and the half-ridge prism. As long as the axis of the threaded holes on the floating partition which are matched with the fixing screws intersects with the axis of the first light hole on the base when the floating partition is installed between the two side plates by the fixing screws, the ridge prism and the half-ridge prism can be installed in place, thereby solving the problem of the poor optical parameters caused by the processing error of the parts or the assembly error of the prism, and reducing the processing precision requirement of the parts and the assembly difficulty.

[0011] Preferably, a limiting groove is arranged on the end face of the base close to the floating partition, and an inclined surface is arranged on one end of the floating partition, and the end of the floating partition provided with the inclined surface is accommodated in the limiting groove, and the floating partition is arranged in an inclined manner between the two side plates.

[0012] Therefore, the limiting groove can limit the rotation range of the floating partition, the installation of the ridge prism is facilitated, the inclined surface on the floating partition can prevent the end of the floating partition from being stuck in the limiting groove during the rotation of the floating partition, so that the end of the floating partition can swing freely in the limiting groove, and the floating partition arranged in an inclined manner ensures that the ridge prism and the half-ridge prism form the required light path after being installed.

[0013] Preferably, two positioning threaded holes are arranged on the side plate, When the bolt is screwed in one of the positioning threaded holes, the end of the bolt can pre-fix the ridge prism, and when the bolt is screwed in the other positioning threaded hole, the end of the bolt can pre-fix the half-ridge prism.

[0014] Therefore, when the ridge prism and the half-ridge prism need to be fixed, one bolt is screwed in one of the positioning threaded holes, the bolt is screwed with a certain tightening force, the end of the bolt abuts against the ridge prism to pre-fix the ridge prism, and the other bolt is screwed in the other positioning threaded hole, the bolt is screwed with a certain tightening force, and the end of the bolt abuts against the half-ridge prism to pre-fix the half-ridge prism.

[0015] Preferably, a plurality of glue injection holes are arranged on the side plate, When the glue is injected into at least one of the glue injection holes, the ridge prism can be bonded with the side plate, and when the glue is injected into at least one of the glue injection holes, the half-ridge prism can be bonded with the side plate.

[0016] Therefore, when the ridge prism and the half-ridge prism need to be fixed, one bolt is screwed into one positioning threaded hole, the bolt is screwed with a certain tightening force, and the end of the bolt is pressed against the ridge prism to pre-fix the ridge prism, another bolt is screwed into another positioning threaded hole, the bolt is screwed with a certain tightening force, and the end of the bolt is pressed against the half-ridge prism to pre-fix the half-ridge prism, then glue is injected into the glue injection hole, the glue can bond the ridge prism and the side plate together, and the glue can bond the half-ridge prism and the side plate together, after the glue between the ridge prism and the side plate and the glue between the half-ridge prism and the side plate solidify, the bolts in the positioning threaded holes are removed, and the fixing of the ridge prism and the half-ridge prism is very simple.

[0017] The prism structure also provides an assembling method of the prism structure, comprising the following steps: (a). The fixing screw is screwed into the side of the floating partition plate through the through hole on the side plate, and the floating partition plate is installed between the two side plates, and the floating partition plate can rotate between the two side plates; (b). The ridge prism is installed between the two side plates, the ridge prism is pushed so that the first side of the ridge prism is attached to the base, the second side of the ridge prism is attached to one side of the floating partition plate, and the ridge prism is assembled in place; (c). The half-ridge prism is installed between the two side plates, the half-ridge prism is pushed so that the third side of the half-ridge prism is attached to the prism frame, and the fourth side of the half-ridge prism is attached to the other side of the floating partition plate, and the half-ridge prism is assembled in place; (d). The ridge prism and the half-ridge prism are fixed; (e). The ridge prism is bonded to the side plate, and the half-ridge prism is bonded to the side plate.

[0018] The assembling method of the prism structure can rotate the floating partition plate at will between the two side plates with the fixing screw as the shaft during assembly, the floating partition plate is self-aligned to the attached state of the ridge prism after the ridge prism is pushed to the position, and assembly errors are avoided, the assembling method of the prism structure solves the problem of poor optical parameters caused by part processing errors or prism assembly errors through the floating partition plate that can rotate at will between the two side plates, reduces the part processing precision requirement and assembly difficulty, and improves the processing efficiency of the prism frame and the assembling efficiency of the prism and the prism frame.

[0019] The prism structure also provides an assembling method of the prism structure, comprising the following steps: (a). The fixing screw is screwed into the side of the floating partition plate through the through hole on the side plate, and the floating partition plate is installed between the two side plates, and the floating partition plate can rotate between the two side plates; (b). Install the ridge prism between the two side plates, push the ridge prism to make the first side of the ridge prism fit on the base, the second side of the ridge prism fit on one side of the floating partition, and the ridge prism is assembled in place; (c). Install the half-ridge prism between the two side plates, push the half-ridge prism to make the third side of the half-ridge prism fit on the prism frame, and the fourth side of the half-ridge prism fit on the other side of the floating partition, and the half-ridge prism is assembled in place; (d). Use a bolt to be screwed in a positioning threaded hole, and when the bolt is screwed, the end of the bolt presses against the ridge prism to pre-fix the ridge prism, and use another bolt to be screwed in another positioning threaded hole, and when the bolt is screwed, the end of the bolt presses against the half-ridge prism to pre-fix the half-ridge prism; (e). Inject glue into the glue injection hole, and the ridge prism and the side plate are bonded together, and the half-ridge prism and the side plate are bonded together; (f). After the glue between the ridge prism and the side plate and the glue between the half-ridge prism and the side plate solidifies, remove the bolt in the positioning threaded hole.

[0020] The assembling method of the prism structure of the present application, in the assembling process, since the floating partition can be randomly rotated between the two side plates with the fixed screw as the shaft, only the ridge prism needs to be pushed to the position first, and then the floating partition will be automatically returned to the fitting state with the ridge prism, so as to avoid the assembling error, the assembling method of the present application solves the problem of poor optical parameters caused by the machining error of the parts or the assembling error of the prism in the traditional way, reduces the machining precision requirement of the parts and the assembling difficulty, and thus improves the machining efficiency of the prism frame and the assembling efficiency of the prism and the prism frame.

[0021] Preferably, in step (a), the number of fixed screws is two, and the two side plates are each provided with a through hole with the same axis, and the two fixed screws are respectively screwed through the through holes of the two side plates and screwed in the side part of the floating partition, and the floating partition can be rotated between the two side plates with the fixed screws as the shaft.

[0022] Therefore, when the floating partition is installed between the two side plates through the two fixed screws, the floating partition can be stably and randomly rotated between the two side plates with the two fixed screws as the shaft, and only the ridge prism needs to be pushed to the position first, and then the floating partition will be automatically returned to the fitting state with the ridge prism, so as to avoid the assembling error, when the prism frame and the floating partition are machined, after the prism frame and the floating partition are turned and milled, only the two threaded holes adapted to the two fixed screws need to be machined on the floating partition, and as long as the two threaded holes have the same axis, the error caused by the deviation of the second clamping hole and the deviation of the positioning of the floating partition can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 A structural schematic diagram of a prism structure according to an embodiment of the present application; Figure 2 A structural schematic diagram of a prism structure according to an embodiment of the present application; Figure 1 A structural schematic diagram of a prism structure according to an embodiment of the present application; Figure 3 A structural schematic diagram of a prism structure according to an embodiment of the present application; Figure 1 A structural schematic diagram of a prism structure according to an embodiment of the present application; Figure 4 A structural schematic diagram of a prism structure according to an embodiment of the present application; Figure 1 A structural schematic diagram of a prism structure according to an embodiment of the present application; Figure 5 A structural schematic diagram of a prism structure according to an embodiment of the present application; Figure 4 A structural schematic diagram of a prism structure according to an embodiment of the present application; Figure 6 A structural schematic diagram of a prism structure according to an embodiment of the present application; Figure 1 A structural schematic diagram of a prism structure according to an embodiment of the present application; Figure 7 A structural schematic diagram of a prism structure according to an embodiment of the present application; Figure 6 A structural schematic diagram of a prism structure according to an embodiment of the present application; Figure 8 A structural schematic diagram of a prism structure according to an embodiment of the present application; Figure 1 A structural schematic diagram of a prism structure according to an embodiment of the present application; Figure 9 A structural schematic diagram of a prism structure according to an embodiment of the present application; Figure 1 A structural schematic diagram of a prism structure according to an embodiment of the present application; Figure 10 A structural schematic diagram of a prism structure according to an embodiment of the present application; Figure 1 A structural schematic diagram of a prism structure according to an embodiment of the present application; Figure 11 A structural schematic diagram of a prism structure according to an embodiment of the present application; Figure 12 A structural schematic diagram of a prism structure according to an embodiment of the present application; DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application.

[0025] In the description of the present application, it needs to be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more; it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "arrangement" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements.

[0026] Referring to Figures 1 to 9 , a prism structure comprises a prism frame 1, a ridge prism 2, a half-ridge prism 3, a floating partition plate 4 and a fixing screw 5.

[0027] Referring to Figures 1 to 9 , the prism frame 1 comprises a base 11 and two side plates 12, the ends of the two side plates 12 are arranged on the end faces of the base 11, the side plates 12 are integrally formed with the base 11, the two side plates 12 are arranged in parallel, and the base 11 is formed with a first light hole 111 for light to pass through.

[0028] The prism frame 1 can further comprise a circular end plate 13, referring to Figure 9 , the free end of the side plate 12 is formed with a receiving groove 124, referring to Figure 4 and Figure 5 , the two receiving grooves 124 of the two side plates 12 are mounted with the circular end plate 13, the top of the circular end plate 13 is accommodated in the receiving groove 124 on the side plate 12 above, the bottom of the circular end plate 13 is accommodated in the receiving groove 124 on the side plate 12 below, and the middle part of the circular end plate 13 is suspended for limiting the half-ridge prism 3. The circular end plate 13 of the prism frame 1 is only used as a positioning tool when assembling the ridge prism 2 and the half-ridge prism 3, and needs to be removed after the ridge prism 2 and the half-ridge prism 3 are assembled.

[0029] Referring to Figure 2 , Figure 3 , Figure 8 and Figure 9Each side plate 12 has a through hole 121 formed therein. The two through holes 121 on the two side plates 12 are arranged coaxially. The through holes 121 are used to install the floating partition 4. The axis b of the through hole 121 intersects the axis a of the first light hole 111. Figure 3 and Figure 9 As shown), this ensures that after the floating partition 4, ridge prism 2, and half-roof prism 3 are installed in place, the end faces of the floating partition 4 and the half-roof prism 3 form a 48° angle. Figure 5 (α=48°), thus satisfying the requirements of the optical system for upright imaging and shortening the optical path.

[0030] See Figures 2 to 8 The floating partition 4 is installed between the two side plates 12, and the floating partition 4 can rotate freely between the two side plates 12.

[0031] See Figure 2 and Figure 3 The upper and lower surfaces of the floating partition 4 are both formed with threaded holes 43. The two threaded holes 43 are arranged coaxially. The fixing screws 5 pass through the through holes 121 on the side plate 12 and are screwed into the threaded holes 43 on the side of the floating partition 4. In this embodiment, there are two fixing screws 5. The two fixing screws 5 pass through the through holes 121 on the two side plates 12 and are screwed into the two threaded holes 43 on the floating partition 4. Figure 7 As shown), the axis b of the two fixing screws 5 intersects the axis a of the first light hole 111 on the base 11, ensuring that after the floating partition 4, the ridge prism 2, and the half-roof prism 3 are installed in place, the end face of the floating partition 4 and the half-roof prism 3 have an angle of 48°. Figure 5 In the case of α=48°, the floating partition 4 can rotate freely between the two side plates 12 with the two fixing screws 5 as the axis, thus meeting the requirements of the optical system for upright imaging and shortening the optical path. In other embodiments, depending on the assembly requirements, the number of fixing screws 5 can also be one. A through hole 121 is formed on one side plate 12, and a threaded hole 43 is formed on the upper or lower end face of the floating partition 4. The fixing screw 5 passes through the through hole 121 on the side plate 12 and is screwed into the threaded hole 43 on the floating partition 4. The axis of the fixing screw 5 intersects with the axis a of the first optical hole 111 on the base 11, ensuring that after the floating partition 4 and the ridge prism 2 and half-roof prism 3 are installed in place, the end face of the floating partition 4 and the half-roof prism 3 have an angle of 48°. Figure 5 (α=48°), thus meeting the requirements of the optical system for upright imaging and shortening the optical path. The floating partition 4 can rotate freely between the two side plates 12 with the fixing screw 5 as the axis.

[0032] See Figure 2 , Figure 3 and Figure 9A limiting groove 112 is formed on the end face of the base 11 near the floating partition 4. One end of the floating partition 4 is formed with a bevel 42. When the floating partition 4 is installed between the two side plates 12, the end of the floating partition 4 with the bevel 42 is accommodated in the limiting groove 112. The floating partition 4 is arranged obliquely between the two side plates 12. Figure 8 As shown, the limiting groove 112 can limit the rotation range of the floating partition 4, which facilitates the installation of the ridge prism 2. The presence of the inclined surface 42 on the floating partition 4 can prevent the end of the floating partition 4 from getting stuck in the limiting groove 112 during the rotation process. The inclined surface 42 on the floating partition 4 can allow the end of the floating partition 4 to swing freely in the limiting groove 112. In addition, the inclined floating partition 4 ensures that the ridge prism 2 and the half-roof prism 3 form the required optical path after installation.

[0033] The structural styles of the ridge prism 2 and the half-roof prism 3 are as follows: Figures 2 to 7 As shown, the ridge prism 2 and the half-roof prism 3 are mounted on the prism frame 1. Specifically, refer to... Figures 1 to 7 Both the ridge prism 2 and the half-roof prism 3 are installed between the two side plates 12. The ridge prism 2 and the half-roof prism 3 are located on both sides of the floating partition 4, and the first side 21 of the ridge prism 2 is attached to the base 11. Figure 5 As shown), the second side 22 of the roof prism 2 is attached to the floating partition 4. Figure 5 As shown, the third side 31 of the half-roof prism 3 is attached to the circular end plate 13 on the prism frame 1, and the fourth side 32 of the half-roof prism 3 is attached to the floating partition 4.

[0034] See Figure 2 and Figure 3 The floating partition 4 has a second light hole 41 formed on it. Light passes through the first light hole 111 on the base 11 of the prism frame 1, the ridge prism 2, the second light hole 41 on the floating partition 4, and the half-roof prism 3 to realize the function of the optical system to achieve the image orientation and shorten the optical path.

[0035] See Figures 1 to 3 , Figures 6 to 9The side plate 12 has two positioning threaded holes 122. After the ridge prism 2 and the half-roof prism 3 are installed in place, when it is necessary to fix the ridge prism 2 and the half-roof prism 3, a bolt is screwed into one of the positioning threaded holes 122 with a certain tightening force. The end of the bolt presses against the ridge prism 2, and the bolt can pre-fix the ridge prism 2. Another bolt is screwed into the other positioning threaded hole 122 with a certain tightening force. The end of the bolt presses against the half-roof prism 3, and the bolt can pre-fix the half-roof prism 3. The tightening force is such that the end of the bolt does not damage the ridge prism 2 and the half-roof prism 3. Only the end of the bolt needs to press slightly against the ridge prism 2 and the half-roof prism 3 to pre-fix the ridge prism 2 and the half-roof prism 3.

[0036] In this embodiment, each of the two side plates 12 has two positioning threaded holes 122. When fixing the ridge prism 2, a bolt can be screwed into each of the two positioning threaded holes 122 on the two side plates 12 to pre-fix both sides of the ridge prism 2 to ensure the stability of the fixation. When fixing the half-roof prism 3, a bolt can be screwed into each of the two positioning threaded holes 122 on the two side plates 12 to pre-fix both sides of the half-roof prism 3 to ensure the stability of the fixation. When fixing the ridge prism 2, a bolt can also be screwed into only one positioning threaded hole 122 on one side plate 12 to pre-fix the ridge prism 2. When fixing the half-roof prism 3, a bolt can also be screwed into only one positioning threaded hole 122 on one side plate 12 to pre-fix the half-roof prism 3.

[0037] See Figures 1 to 3 , Figure 6 , Figure 8 and Figure 9 The side plate 12 has multiple injection holes 123 formed on it. In this embodiment, there are three injection holes 123 on the side plate 12. One injection hole 123 corresponds to the ridge prism 2, and two injection holes 123 correspond to the half-roof prism 3. After the ridge prism 2 is fixed, glue is injected into one injection hole 123 ( Figure 2 Inject glue into the rightmost glue injection hole 123. The glue can bond the ridge prism 2 to the side panel 12. After the half-roof prism 3 is fixed, inject glue into the other two glue injection holes 123. The glue can bond the half-roof prism 3 to the side panel 12. After the glue between the ridge prism 2 and the side panel 12 and the half-roof prism 3 and the side panel 12 have solidified, the bolts in the positioning threaded hole 122 can be removed. The fixing of the ridge prism 2 and the half-roof prism 3 is very simple.

[0038] In this embodiment, each of the two side plates 12 has three glue injection holes 123. When bonding the ridge prism 2, glue can be injected into the two glue injection holes 123 on the two side plates 12 respectively to bond the ridge prism 2 to the two side plates 12 respectively to ensure the stability of the bonding and fixing of the ridge prism 2. When bonding the half-roof prism 3, glue can be injected into the four glue injection holes 123 on the two side plates 12 respectively to bond the half-roof prism 3 to the two side plates 12 respectively to ensure the stability of the bonding and fixing of the half-roof prism 3. When bonding the ridge prism 2, glue can also be injected into only one glue injection hole 123 on one side plate 12 to bond the ridge prism 2 to one side plate 12. When bonding the half-roof prism 3, glue can also be injected into only two glue injection holes 123 on one side plate 12 respectively to bond the half-roof prism 3 to one side plate 12.

[0039] See Figures 1 to 9 In the prism structure of this invention, light passes through the first light hole 111 on the base 11 of the prism frame 1, the second light hole 41 on the roof prism 2, the floating partition 4, and the half-roof prism 3 to achieve the functions of uprighting the optical system and shortening the optical path; when assembling the prism structure, it is necessary to first install and fix the circular end plate 13 in the two receiving slots 124 of the two side plates 12 as a positioning tool. Figure 4 and Figure 5As shown), first, install the floating partition 4 between the two side plates 12. Two fixing screws 5 pass through the through holes 121 on the two side plates 12 and are screwed into the two threaded holes 43 on the floating partition 4. The floating partition 4 can rotate freely between the two side plates 12. Then, assemble the ridge prism 2. Install the ridge prism 2 between the two side plates 12 and push it so that its first side 21 fits against the base 11, and its second side 22 fits against one side of the floating partition 4. The ridge prism 2 is now in place. Next, assemble the half-roof prism 3. Install the half-roof prism 3 between the two side plates 12 and push it so that its third side 31 fits against the circular end plate 13 on the prism frame 1, and its fourth side 32 fits against the other side of the floating partition 4. The half-roof prism 3 is now in place. Then, on the side plates 12... A bolt is screwed into a positioning threaded hole 122 with a certain tightening force. The end of the bolt presses against the ridge prism 2 to pre-fix the ridge prism 2. Another bolt is screwed into another positioning threaded hole 122 on the side plate 12 with a certain tightening force. The end of the bolt presses against the half-roof prism 3 to pre-fix the half-roof prism 3. After the ridge prism 2 is fixed, glue is injected into a glue injection hole 123. The glue bonds the ridge prism 2 to the side plate 12. After the half-roof prism 3 is fixed, glue is injected into the other two glue injection holes 123. The glue bonds the half-roof prism 3 to the side plate 12. After the glue between the ridge prism 2 and the side plate 12 and the half-roof prism 3 and the side plate 12 solidify, the bolt in the positioning threaded hole 122 and the circular end plate 13 installed on the prism frame 1 can be removed. The fixing of the ridge prism 2 and the half-roof prism 3 is very simple.During assembly, since the floating partition 4 can rotate freely between the two side plates 12, during assembly, it is only necessary to push the ridge prism 2 into place first, and the floating partition 4 will automatically return to its position and fit with the ridge prism 2, thus avoiding assembly errors. When machining the prism frame 1 and the floating partition 4, after milling and turning the prism frame 1 and the floating partition 4, the threaded holes 43 on the floating partition 4 that are compatible with the fixing screws 5 can be directly machined. It is only necessary to ensure that the two threaded holes 43 are coaxial, avoiding the error caused by the secondary clamping hole misalignment, which would lead to the positioning offset of the floating partition 4. It is only necessary to ensure that when the floating partition 4 is installed between the two side plates 12 by the fixing screws 5, the axis of the threaded holes 43 on the floating partition 4 that are compatible with the fixing screws 5 is aligned with the axis of the base 11. The intersection of the axes of the first aperture 111 ensures the proper installation of the ridge prism 2 and the half-roof prism 3, solving the problem of poor optical parameters caused by traditional component machining errors or prism assembly errors. This reduces the precision requirements for component machining and assembly difficulty. The prism structure of this invention separates the floating partition 4 and the prism frame 1 into two independent components, which are then machined separately, simplifying the machining and clamping process. The floating partition 4, which can rotate freely between the two side plates 12, solves the problem of poor optical parameters caused by traditional component machining errors or prism assembly errors, reducing the precision requirements for component machining and assembly difficulty. This, in turn, improves the machining efficiency of the prism frame and the assembly efficiency of the prism and prism frame.

[0040] See Figure 11 A method for assembling a prism structure includes the following steps: S101: After passing the fixing screw 5 through the through hole 121 on the side plate 12, screw it into the side of the floating partition 4, install the floating partition 4 between the two side plates 12, and the floating partition 4 can rotate between the two side plates 12.

[0041] S102: Install the ridge prism 2 between the two side plates 12, push the ridge prism 2 so that the first side 21 of the ridge prism 2 fits against the base 11, and the second side 22 of the ridge prism 2 fits against one side of the floating partition 4. The ridge prism 2 is then assembled in place.

[0042] S103: Install the half-roof prism 3 between the two side plates 12, push the half-roof prism 3 so that the third side 31 of the half-roof prism 3 fits against the prism frame 1, and the fourth side 32 of the half-roof prism 3 fits against the other side of the floating partition 4. The half-roof prism 3 is then assembled in place.

[0043] S104: Fix the ridge prism 2 and the half-roof prism 3.

[0044] S105: Glue the ridge prism 2 to the side panel 12 together, and glue the half-roof prism 3 to the side panel 12 together.

[0045] In the assembly method of the prism structure of the present invention, since the floating partition 4 can rotate freely between the two side plates 12 of the prism frame 1 with the fixing screw 5 as the axis, during the assembly process, it is only necessary to push the ridge prism 2 into place first, and the floating partition 4 will automatically return to the fitting state with the ridge prism 2, thereby avoiding assembly errors. The assembly method of the present invention, through a floating partition 4 that can rotate freely between the two side plates 12, solves the problem of poor optical parameters caused by the traditional part processing error or prism assembly error, reduces the part processing accuracy requirements and assembly difficulty, thereby improving the processing efficiency of the prism frame 1 and the assembly efficiency of the prism and the prism frame 1.

[0046] See Figure 10 and Figure 12 A method for assembling a prism structure includes the following steps: S201: After passing the fixing screw 5 through the through hole 121 on the side plate 12, screw it into the side of the floating partition 4, install the floating partition 4 between the two side plates 12, and the floating partition 4 can rotate between the two side plates 12. See Figure 10 There are two fixing screws 5. Both side plates 12 have coaxial through holes 121. The upper and lower ends of the floating partition 4 have threaded holes 43. The two threaded holes 43 are coaxially aligned. The two fixing screws 5 pass through the through holes 121 on the two side plates 12 and are screwed into the two threaded holes 43 on the floating partition 4. The axes of the two fixing screws 5 intersect with the axis of the first light hole 111 on the base 11, ensuring that after the floating partition 4, the ridge prism 2, and the half-roof prism 3 are installed in place, the end faces of the floating partition 4 and the half-roof prism 3 form a 48° angle. Figure 5 (α=48°), thus meeting the requirements of the optical system for upright imaging and shortening the optical path. The floating partition 4 can rotate freely between the two side plates 12 with the two fixing screws 5 as the axis.

[0047] S202: Install the ridge prism 2 between the two side plates 12, push the ridge prism 2 so that the first side 21 of the ridge prism 2 fits against the base 11, and the second side 22 of the ridge prism 2 fits against one side of the floating partition 4. The ridge prism 2 is then assembled in place.

[0048] S203: Install the half-roof prism 3 between the two side plates 12, push the half-roof prism 3 so that the third side 31 of the half-roof prism 3 fits against the prism frame 1, and the fourth side 32 of the half-roof prism 3 fits against the other side of the floating partition 4. The half-roof prism 3 is then assembled in place. Before installing the half-roof prism 3, it is necessary to first install and fix the circular end plate 13 in the two receiving slots 124 of the two side plates 12. Figure 4 andFigure 5 As shown, the third side 31 of the semi-roof prism 3 is attached to the circular end plate 13 on the prism frame 1 as a positioning fixture. Figure 5 As shown), the fourth side 32 of the half-roof prism 3 is attached to the other side of the floating partition 4.

[0049] S204: A bolt 6 is screwed into a positioning threaded hole 122. When the bolt 6 is screwed in, the end of the bolt 6 presses against the ridge prism 2 to pre-fix the ridge prism 2. Another bolt 6 is screwed into another positioning threaded hole 122. When the bolt 6 is screwed in, the end of the bolt 6 presses against the half-roof prism 3 to pre-fix the half-roof prism 3.

[0050] S205: Inject glue into the glue injection hole 123 to bond the ridge prism 2 to the side panel 12, and bond the half-roof prism 3 to the side panel 12.

[0051] S206: After the glue between the ridge prism 2 and the side panel 12 and the glue between the half prism 3 and the side panel 12 have solidified, remove the bolt 6 in the positioning threaded hole 122. After the glue between the ridge prism 2 and the side panel 12, and between the half-roof prism 3 and the side panel 12 have solidified, remove the circular end plate 13 installed on the prism frame 1. At this point, the assembly of the ridge prism 2 and the half-roof prism 3 is complete.

[0052] In the assembly method of the prism structure of the present invention, since the floating partition 4 can rotate freely between the two side plates 12 with the two fixing screws 5 as the axis, during the assembly process, it is only necessary to push the ridge prism 2 into place first, and the floating partition 4 will automatically return to the fitting state with the ridge prism 2, thereby avoiding assembly errors. When processing the prism frame 1 and the floating partition 4, after the prism frame 1 and the floating partition 4 are formed by milling and turning, the two threaded holes 43 on the floating partition 4 that are adapted to the two fixing screws 5 can be directly processed. As long as the two threaded holes 43 are coaxial, it is possible to avoid the error caused by the secondary clamping hole deviation, which would lead to the positioning offset of the floating partition 4. The assembly method of the present invention, through a floating partition 4 that can rotate freely between the two side plates 12, solves the problem of poor optical parameters caused by the traditional part processing error or prism assembly error, reduces the part processing accuracy requirements and assembly difficulty, thereby improving the processing efficiency of the prism frame 1 and the assembly efficiency of the prism and the prism frame 1.

[0053] The above descriptions are merely some embodiments of the present invention, intended to illustrate the technical means of the present invention, and are not intended to limit the technical scope of the present invention. Any obvious improvements made to the present invention by those skilled in the art in conjunction with existing common knowledge fall within the protection scope of the present invention.

Claims

1. A prism structure, comprising a prism frame, a roof prism, and a half-roof prism, wherein the roof prism and the half-roof prism are both disposed on the prism frame, characterized in that, It also includes a floating partition and fixing screws. The prism frame includes a base and two parallel side plates. The ends of the side plates are located on the end faces of the base. The base has a first light hole. The floating partition is located between the two side plates. The floating partition has a second light hole. The side plates have through holes. The fixing screw passes through the through holes in the side plates and is screwed into the side of the floating partition. The floating partition can rotate between the two side plates with the fixing screw as the axis. The ridge prism and the half-roof prism are both located between the two side plates and are located on both sides of the floating partition. The first side of the ridge prism is attached to the base. The second side of the ridge prism is attached to the floating partition. The third side of the half-roof prism is attached to the prism frame. The fourth side of the half-roof prism is attached to the floating partition.

2. The prism structure according to claim 1, characterized in that, The number of fixing screws is two, and there are coaxial through holes on both side plates. The two fixing screws pass through the through holes on the two side plates and are screwed into the side of the floating partition.

3. The prism structure according to claim 1, characterized in that, The axis of the fixing screw intersects the axis of the first optical hole.

4. The prism structure according to claim 1, characterized in that, The base has a limiting groove on the end face near the floating partition, and one end of the floating partition has an inclined surface. The end of the floating partition with the inclined surface is accommodated in the limiting groove, and the floating partition is arranged obliquely between the two side plates.

5. The prism structure according to claim 1, characterized in that, The side plate is provided with two positioning threaded holes. When a bolt is screwed into one of the positioning threaded holes, the end of the bolt can pre-fix the ridge prism; when a bolt is screwed into another positioning threaded hole, the end of the bolt can pre-fix the half-roof prism.

6. The prism structure according to claim 5, characterized in that, The side plate is provided with multiple glue injection holes. When glue is injected into at least one injection hole, the ridge prism can be bonded to the side panel, and when glue is injected into at least one injection hole, the half-roof prism can be bonded to the side panel.

7. A method for assembling a prism structure, characterized in that, Includes the following steps: (a) After passing the fixing screw through the through hole on the side plate, screw it into the side of the floating partition, install the floating partition between the two side plates, and the floating partition can rotate between the two side plates; (b) Install the ridge prism between the two side panels, push the ridge prism so that the first side of the ridge prism is attached to the base and the second side of the ridge prism is attached to one side of the floating partition. The ridge prism is now in place. (c) Install the half-roof prism between the two side plates, push the half-roof prism so that the third side of the half-roof prism fits against the prism frame, and the fourth side of the half-roof prism fits against the other side of the floating partition. The half-roof prism is now in place. (d) Secure the ridge prism and half-roof prism; (e) Glue the ridge prism to the side panel and the half-roof prism to the side panel.

8. A method for assembling a prism structure, characterized in that, Includes the following steps: (a) After passing the fixing screw through the through hole on the side plate, screw it into the side of the floating partition, install the floating partition between the two side plates, and the floating partition can rotate between the two side plates; (b) Install the ridge prism between the two side panels, push the ridge prism so that the first side of the ridge prism is attached to the base and the second side of the ridge prism is attached to one side of the floating partition. The ridge prism is now in place. (c) Install the half-roof prism between the two side plates, push the half-roof prism so that the third side of the half-roof prism fits against the prism frame, and the fourth side of the half-roof prism fits against the other side of the floating partition. The half-roof prism is now in place. (d) Use a bolt screwed into a positioning threaded hole, with the end of the bolt pressing against the ridge prism to pre-fix the ridge prism. Use another bolt to screw into another positioning threaded hole. When screwing in the bolt, the end of the bolt presses against the half-roof prism to pre-fix the half-roof prism. (e) Inject glue into the glue injection holes to bond the ridge prism to the side panel and the half-roof prism to the side panel; (f) After the glue between the ridge prism and the side panel, and between the half prism and the side panel have solidified, remove the bolts from the positioning threaded holes.

9. The assembly method according to claim 8, characterized in that, In step (a), there are two fixing screws. Both side plates have through holes on the same axis. After passing the two fixing screws through the through holes on the two side plates, they are screwed into the side of the floating partition. The floating partition can rotate between the two side plates with the fixing screws as the axis.

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