Secondary focusing condenser
By employing a secondary focusing structure and a self-cleaning dustproof design, the energy loss and maintenance issues of traditional condenser lenses are resolved, thereby improving focusing efficiency and practicality.
Patent Information
- Application Number
- CN202520674347.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-04-10
AI Technical Summary
Traditional single-mirror condensers struggle to achieve a highly concentrated light beam during the light-gathering process, resulting in significant energy loss. Furthermore, they lack effective dustproof and self-cleaning functions, impacting light-gathering efficiency and maintenance costs.
It adopts a secondary focusing structure, including a reflective parabolic mirror and a secondary reflector, combined with an angle adjustment seat and a light guide column, to achieve secondary convergence of light and parallel entry into the light guide, and achieves self-cleaning and dust prevention through a sloping glass cover.
It significantly improves light-gathering efficiency, reduces light loss, lowers maintenance costs, and enhances the practicality and reliability of the condenser.
Smart Images
Figure CN223883836U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of condenser technology, specifically to a secondary focusing condenser. BACKGROUND
[0002] In the light converging process of the traditional single reflector condenser, the light is difficult to reach a highly concentrated state due to only one reflection. After reflection, the light has a certain divergence angle, resulting in that the light entering the subsequent light guide pipe or other optical system is not ideal parallel light. Such non-parallel light is easy to scatter in the transmission process, causing the energy of the light to gradually dissipate in the transmission path, thereby reducing the condensing efficiency of the condenser and the utilization efficiency of the light. Especially in scenarios requiring long-distance transmission of light, the problem of light energy loss is more prominent, seriously affecting the overall performance of the system.
[0003] In addition, in the actual use environment, the light guide pipe inlet end will inevitably be affected by external factors such as dust and rain. The traditional condenser usually lacks effective dustproof measures and is difficult to prevent dust from entering the internal optical system, causing damage to the optical elements. If a glass cover is provided at the inlet end, dust is likely to accumulate, and the accumulation of dust will block the light, reducing the light transmittance of the condenser and thus affecting its condensing effect. In addition, the glass cover also does not have a self-cleaning function and needs to be cleaned regularly by hand, increasing the maintenance cost and workload. SUMMARY
[0004] The utility model aims at the problems existing in the prior art and provides a secondary focusing condenser. The secondary focusing light is approximately parallel to the light guide pipe, greatly reducing the scattering and loss of light in the transmission process and significantly improving the condensing efficiency of the condenser and the utilization efficiency of the light. The light guide pipe has good dustproof effect and realizes self-cleaning function, reducing the artificial maintenance cost and workload.
[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of:
[0006] The application discloses a kind of secondary focusing condenser, including reflecting parabolic mirror, secondary reflector, plane mirror, angle adjusting seat, light guide pipe stand;The reflecting parabolic mirror is oppositely arranged with the secondary reflector, is connected by several support rods;One end of the angle adjusting seat is connected to the back of the reflecting parabolic mirror, and the other end is connected to the upper end of the light guide pipe stand;The angle adjusting seat is connected to the plane mirror, so that the plane mirror is located at the back of the reflecting parabolic mirror;The middle part of the reflecting parabolic mirror is provided with light passing hole, and the light passing hole is provided with heat insulation glass plate;The reflecting parabolic mirror is a concave mirror, and the secondary reflector is a convex mirror, and the structure of the convex mirror and the concave mirror is configured so that the light reflected from the curved surface of the reflecting parabolic mirror can be converged on the curved surface of the secondary reflector, and after being reflected again, it passes through the light passing hole in the middle part of the reflecting parabolic mirror and falls on the plane mirror;The angle of the plane mirror is set so that the light falling thereon is reflected vertically into the light guide pipe stand;The bottom plate of the angle adjusting seat is rotatably connected to the upper end of the light guide pipe stand by a bearing, the bottom plate is provided with a through hole in communication with the light guide pipe stand, and the upper end of the through hole is connected to a cylinder head, the upper end surface of the cylinder head is an inclined surface, and the inclined surface is provided with a glass cover.
[0007] Further, the angle adjusting seat includes a bottom plate, two fixed side plates and two movable rods, the two fixed side plates are fixedly arranged on the upper end surface of the bottom plate, and the movable rods are rotatably connected to the corresponding fixed side plates by first pin shafts.
[0008] Further, the angle adjusting seat further includes a T-shaped plate, a first connecting rod and a second connecting rod, the middle part of the horizontal plate of the T-shaped plate is rotatably connected to the first pin shaft, the other side of the horizontal plate of the T-shaped plate is connected to the plane mirror, and the vertical plate of the T-shaped plate is provided with a waist groove.
[0009] Further, the angle adjusting seat includes a pitch angle driving motor, a first gear and a sector gear plate, the pitch angle driving motor is fixed to the bottom plate, the output shaft of the pitch angle driving motor is connected to the first gear, the first gear is meshingly connected to the sector gear plate, the center of the sector gear plate is rotatably connected to the first pin shaft, and the movable rods are fixed.
[0010] Further, the angle adjusting seat comprises an azimuth angle driving motor, a second gear and a third gear; the light guide tube stand is provided with the second gear, the azimuth angle driving motor is fixed to the bottom plate, the output shaft of the azimuth angle driving motor is connected with the third gear, and the third gear is in meshing connection with the second gear.
[0011] Further, the middle light passing hole of the reflective parabolic mirror is fixed with a heat insulation glass plate.
[0012] Further, one side of the reflective parabolic mirror facing the secondary reflector is concave, and one side of the secondary reflector facing the reflective parabolic mirror is convex.
[0013] Compared with the prior art, the utility model has the beneficial effects that:
[0014] 1. Through the secondary focusing effect of the reflective parabolic mirror and the secondary reflector, the light is converged again after twice reflection, the light after secondary focusing is substantially parallel to the light guide tube after being adjusted in direction by the plane mirror, the transmission mode of the parallel light greatly reduces the scattering and loss of the light in the transmission process, significantly improves the condensing efficiency of the condenser and the utilization efficiency of the light, and is especially suitable for long-distance light transmission scene, and effectively solves the problem of serious energy loss of the traditional condenser in the scene.
[0015] 2. The bottom plate through hole of the angle adjusting seat is connected with the barrel head, the glass cover is arranged on the barrel head, has good dustproof effect, can effectively prevent dust from entering the light guide tube stand, and protects the optical performance of the light guide tube.
[0016] 3. The glass cover arranged on the barrel head is arranged in an inclined manner, rainwater can wash the dust on the glass cover along the inclined surface, realizes the self-cleaning function, reduces the artificial maintenance cost and workload, and further improves the practicability and reliability of the condenser.
[0017] 4. The barrel head rotates with the bottom plate, so that the inclined surface is always directed to the light passing hole of the plane mirror and the reflective parabolic mirror, and the maximum light amount is ensured. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.
[0019] Figure 1 It is the whole structure schematic view of the condenser in an embodiment of the application.
[0020] Figure 2It is a sectional view structure schematic diagram of the condenser in an embodiment of the present application.
[0021] Figure 3 It is a sectional view structure schematic diagram of the condenser in an embodiment of the present application. Figure 2 It is a local enlarged view of A in the present application.
[0022] Figure 4 It is a sectional view structure schematic diagram of the condenser in an embodiment of the present application.
[0023] Figure 5 It is a sectional view structure schematic diagram of the condenser in an embodiment of the present application.
[0024] In the figure: 1, reflecting parabolic mirror; 2, secondary reflecting mirror; 3, plane reflecting mirror; 4, angle adjusting seat; 5, light guide pipe stand; 6, supporting rod; 7, glass cover; 8, heat insulation glass plate; 9, cylinder head; 41, bottom plate; 42, fixed side plate; 43, movable rod; 44, T-shaped plate; 45, first connecting rod; 46, second connecting rod; 47, pitch angle driving motor; 48, first gear; 49, sector-shaped toothed plate; 410, azimuth angle driving motor; 411, second gear; 412, third gear; 441, waist groove. DETAILED DESCRIPTION
[0025] The technical scheme of the present application will be described clearly and completely below in combination with the drawings in the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present application.
[0026] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship when the product of the present application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, structure and operation, therefore it cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.
[0027] In addition, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.
[0028] In the description of the utility model, still need explaining, unless another explicit provision and limitation, term "arrangement", "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be direct connection, also can pass through intermediate medium indirectly connected, can be two element internal communication.For ordinary skilled person in the art, can understand the concrete meaning of above-mentioned term in the utility model according to specific circumstances.
[0029] In the light converging process of the conventional single-reflection mirror condenser, the light is difficult to reach a highly concentrated state due to only one reflection. After reflection, the light has a certain divergence angle, resulting in that the light entering the subsequent light guide pipe or other optical system is not ideal parallel light. Such non-parallel light is easy to scatter in the transmission process, causing the energy of the light to be gradually lost on the transmission path, thereby reducing the condensing efficiency of the condenser and the utilization efficiency of the light. Especially in scenarios requiring long-distance transmission of light, the problem of loss of light energy is more prominent, seriously affecting the overall performance of the system.
[0030] In addition, in the actual use environment, the entrance end of the light guide pipe will inevitably be affected by external factors such as dust and rain. The conventional condenser usually lacks effective dustproof measures, making it difficult to prevent dust from entering the interior of the optical system and causing damage to the optical elements. If a glass cover is provided at the entrance end, dust is likely to accumulate, and the accumulation of dust will block the light, reducing the light transmittance of the condenser and thereby affecting its condensing effect. In addition, the glass cover also does not have a self-cleaning function, and needs to be cleaned regularly by hand, increasing the maintenance cost and workload.
[0031] In view of the above technical problems, the embodiment of the present application provides a secondary focusing condenser, which comprises a reflecting parabolic mirror 1, a secondary reflecting mirror 2, a plane reflecting mirror 3, an angle adjusting base 4 and a light guide pipe stand 5. The reflecting parabolic mirror 1 is oppositely arranged with the secondary reflecting mirror 2 and connected through a plurality of supporting rods 6. One end of the angle adjusting base 4 is connected with the back of the reflecting parabolic mirror 1, and the other end is connected with the upper end of the light guide pipe stand 5. The angle adjusting base 4 is connected with the plane reflecting mirror 3, so that the plane reflecting mirror 3 is located at the back of the reflecting parabolic mirror 1. The middle part of the reflecting parabolic mirror 1 is provided with a light passing hole, and the light passing hole is provided with a heat insulation glass plate 8. The reflecting parabolic mirror 1 is a concave mirror, and the secondary reflecting mirror 2 is a convex mirror. The structure of the convex mirror and the concave mirror is configured so that the light reflected from the convex surface of the reflecting parabolic mirror 1 can be converged on the concave surface of the secondary reflecting mirror 2, and after being reflected again, the light passes through the light passing hole in the middle part of the reflecting parabolic mirror 1 and falls on the plane reflecting mirror 3. The angle of the plane reflecting mirror 3 is set so that the light falling thereon is vertically reflected into the light guide pipe stand 5. The bottom plate 41 of the angle adjusting base 4 is rotatably connected to the upper end of the light guide pipe stand 5 through a bearing. The bottom plate 41 is provided with a through hole in communication with the light guide pipe stand 5. The upper end of the through hole is connected with a barrel head 9. The upper end surface of the barrel head 9 is an inclined surface, and the inclined surface is provided with a glass cover 7.
[0032] When the secondary focusing condenser works, the reflecting parabolic mirror 1 is aligned with the sun. When the sunlight irradiates the concave surface of the reflecting parabolic mirror 1, the light is reflected on the concave surface of the reflecting parabolic mirror 1 and converged on the convex surface of the secondary reflecting mirror 2 according to the optical characteristics of the parabolic surface. Due to the specific structure configuration of the reflecting parabolic mirror 1 and the secondary reflecting mirror 2 on the opposite side, the light converged on the convex surface of the secondary reflecting mirror 2 is reflected again, passes through the light passing hole in the middle part of the reflecting parabolic mirror 1 and falls on the plane reflecting mirror 3 located at the back of the reflecting parabolic mirror 1. The angle of the plane reflecting mirror 3 is accurately set through the connecting rod structure, so that the light falling thereon is vertically reflected into the light guide pipe stand 5 after being reflected. The reflection adjusts the direction of the light to be consistent with the axis direction of the light guide pipe stand 5, so as to ensure that the light entering the light guide pipe is basically parallel to the light guide pipe, and the effective transmission of the light is realized.
[0033] Through the secondary focusing effect of the reflecting parabolic mirror 1 and the secondary reflecting mirror 2 and the adjustment of the light direction by the plane reflecting mirror 3, the light entering the light guide pipe stand 5 is basically parallel to the light guide pipe. This parallel light transmission mode greatly reduces the multiple reflection loss of the light in the transmission process, significantly improves the condensing efficiency of the condenser and the utilization efficiency of the light, and realizes the long-distance transmission of the light.
[0034] The cylinder head 9 connected to the upper end of the through hole and the inclined plane glass cover 7 arranged on the cylinder head 9 not only have good dustproof effect and can effectively prevent dust from entering the inside of the light guide pipe stand 5 to protect the optical performance of the light guide pipe, but also make the cylinder head 9 rotate with the bottom plate 41, so that the inclined plane always faces the light passing hole of the plane mirror 3 and the reflecting parabolic mirror 1, thereby ensuring the maximum light entering amount. In addition, rainwater can wash the dust on the glass cover 7 along the inclined plane to realize the self-cleaning function, thereby further improving the practicability and reliability of the condenser.
[0035] In some embodiments, the angle adjusting seat 4 comprises a bottom plate 41, two fixed side plates 42 and two movable rods 43. The two fixed side plates 42 are fixedly arranged on the upper end surface of the bottom plate 41, and the movable rod 43 is rotationally connected with the corresponding fixed side plate 42 through a first pin shaft. The other end of the two movable rods 43 is respectively connected with the back of the reflecting parabolic mirror 1.
[0036] When the angle of the reflecting parabolic mirror 1 needs to be adjusted, the movable rod 43 can be operated to rotate around the first pin shaft, thereby driving the back of the reflecting parabolic mirror 1 to move, so as to realize the precise adjustment of the angle of the reflecting parabolic mirror 1 to adapt to different light conditions and ensure that the sunlight can accurately irradiate on the curved surface of the reflecting parabolic mirror 1.
[0037] In some embodiments, the angle adjusting seat 4 further comprises a T-shaped plate 44, a first connecting rod 45 and a second connecting rod 46. The middle part of the horizontal plate of the T-shaped plate 44 is rotationally connected with the first pin shaft, the other side of the horizontal plate of the T-shaped plate 44 is connected with the plane mirror 3, and the vertical plate of the T-shaped plate 44 is provided with a waist groove 441. One end of the first connecting rod 45 and one end of the second connecting rod 46 are rotationally connected through a second pin shaft, the second pin shaft is movably arranged in the waist groove 441, the other end of the first connecting rod 45 is rotationally connected with one movable rod 43, and the other end of the second connecting rod 46 is rotationally connected with the corresponding fixed side plate 42.
[0038] When the movable rod 43 rotates around the first pin shaft to adjust the angle of the reflecting parabolic mirror 1, the first connecting rod 45 will move, and since the second pin shaft moves in the waist groove 441, the second connecting rod 46 will move, and the T-shaped plate 44 will be linked to move, so that the plane mirror 3 connected to the other side of the horizontal plate of the T-shaped plate 44 can be adjusted synchronously, thereby ensuring that the plane mirror 3 can always accurately reflect the converged light into the light guide pipe stand 5.
[0039] Through the linkage mechanism between the above components, the angle of the plane mirror 3 can adapt to different angles of the reflecting parabolic mirror 1, thereby ensuring that the light always enters the light guide pipe stand 5 in a vertical state, and reducing the scattering and loss of light.
[0040] In some embodiments, the angle adjustment seat 4 comprises an elevation angle drive motor 47, a first gear 48, and a sector gear plate 49. The elevation angle drive motor 47 is fixed to the bottom plate 41, and its output shaft is connected to the first gear 48. The first gear 48 is meshed with the sector gear plate 49. The center of the sector gear plate 49 is rotationally connected to the first pin shaft and fixed to the movable rod 43.
[0041] When the elevation angle drive motor 47 operates, it drives the first gear 48 to rotate. The rotation of the first gear 48 drives the sector gear plate 49 to rotate around its center due to the meshing connection between the first gear 48 and the sector gear plate 49. Since the center of the sector gear plate 49 is fixed to the movable rod 43, and the reflective parabolic mirror 1 is connected to the other end of the movable rod 43, the rotation of the sector gear plate 49 drives the movable rod 43 to rotate, finally achieving precise adjustment of the elevation angle of the reflective parabolic mirror 1. This electric drive mode realizes the automation and precision of angle adjustment. Compared with manual adjustment, it can quickly and accurately adjust the angle of the reflective parabolic mirror 1 to adapt to the changing position of the sun, improving the tracking and collection efficiency of the concentrator for sunlight.
[0042] In some embodiments, the angle adjustment seat 4 comprises an azimuth angle drive motor 410, a second gear 411, and a third gear 412. The light pipe stand 5 is fixed with the second gear 411. The azimuth angle drive motor 410 is fixed to the bottom plate 41, and its output shaft is connected to the third gear 412. The third gear 412 is meshed with the second gear 411.
[0043] When the azimuth angle drive motor 410 operates, it drives the third gear 412 to rotate. Since the third gear 412 is meshed with the second gear 411, the rotation of the third gear 412 drives the second gear 411 to rotate. The second gear 411 is fixed to the light pipe stand 5, which is connected to other parts of the angle adjustment seat 4. In turn, it drives the entire angle adjustment seat 4, as well as the reflective parabolic mirror 1, the plane mirror 3, and other components connected to it, to rotate around the axis of the light pipe stand 5, thereby achieving precise adjustment of the azimuth angle of the reflective parabolic mirror 1.
[0044] In some embodiments, the middle light passing hole of the reflective parabolic mirror 1 is fixed with a heat insulation glass plate 8.
[0045] The heat insulation glass plate 8 is located at the light passing hole and allows light to pass through, enabling the concentrated light to reach the plane mirror 3 smoothly. At the same time, the heat insulation glass plate 8 reflects the infrared rays in the sunlight, effectively blocking the heat in the sunlight, achieving light-heat separation, and reducing the conduction of heat to the inside of the light pipe stand 5 and other components. The heat insulation effect can effectively reduce the transfer of heat to the inside of the light pipe stand 5 and other components, avoiding the problem of temperature rise, performance degradation, or even damage of components caused by heat accumulation, and effectively isolating heat from entering the room.
[0046] In some embodiments, the side of the reflective parabolic mirror 1 facing the secondary mirror 2 is concave, and the side of the secondary mirror 2 facing the reflective parabolic mirror 1 is convex. More specifically, the secondary mirror is a hyperbolic surface of revolution, which uses the optical properties of the hyperbola to focus the light reflected twice at a far distance behind the reflective parabolic mirror 1, that is, after being reflected three times by the plane mirror 3, the light is focused at the center of the light pipe, which can ensure that all the light received by the light hole of the reflective parabolic mirror 1 is collected into the light pipe.
[0047] When sunlight shines on the concave surface of the reflective parabolic mirror 1, according to the optical properties of the parabolic surface, the light will be reflected and converged on the concave surface. Since the convex surface of the secondary mirror 2 is arranged opposite to the concave surface of the reflective parabolic mirror 1, the light converged on the concave surface of the reflective parabolic mirror 1 will be accurately reflected onto the convex surface of the secondary mirror 2. The convex surface of the secondary mirror 2 reflects the light again, so that the light changes the direction of propagation and passes through the light hole in the middle of the reflective parabolic mirror 1.
[0048] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A secondary focusing condenser characterized in that, It comprises a reflecting parabolic mirror (1), a secondary reflecting mirror (2), a plane reflecting mirror (3), an angle adjusting seat (4), a light guide pipe stand (5); The reflecting parabolic mirror (1) is oppositely arranged with the secondary reflecting mirror (2) and is connected through a plurality of supporting rods (6); one end of the angle adjusting seat (4) is connected with the back of the reflecting parabolic mirror (1), and the other end is connected with the upper end of the light guide pipe stand (5); the angle adjusting seat (4) is connected with the plane reflecting mirror (3), so that the plane reflecting mirror (3) is located at the back of the reflecting parabolic mirror (1); The middle part of the reflecting parabolic mirror (1) is provided with a light passing hole, and the light passing hole is provided with a heat insulation glass plate (8); the reflecting parabolic mirror is a concave mirror, and the secondary reflecting mirror is a convex mirror; the structure of the convex mirror and the concave mirror is configured so that the light reflected from the concave surface of the reflecting parabolic mirror (1) can be converged on the convex surface of the secondary reflecting mirror (2), and after being reflected again, the light passes through the light passing hole in the middle part of the reflecting parabolic mirror (1) and falls on the plane reflecting mirror (3); The angle of the plane reflecting mirror (3) is set so that the light falling thereon is reflected vertically into the light guide pipe stand (5) after being reflected; The bottom plate (41) of the angle adjusting seat (4) is rotatably connected to the upper end of the light guide pipe stand (5) through a bearing, the bottom plate (41) is provided with a through hole in communication with the light guide pipe stand (5), the upper end of the through hole is connected with a cylinder head (9), the upper end surface of the cylinder head (9) is an inclined surface, and the inclined surface is provided with a glass cover (7).
2. A two-stage focusing condenser according to claim 1, characterized in that The angle adjusting seat (4) comprises a bottom plate (41), two fixed side plates (42) and two movable rods (43); the two fixed side plates (42) are fixedly arranged on the upper end surface of the bottom plate (41), and the movable rods (43) are rotatably connected with the corresponding fixed side plates (42) through first pin shafts; the other ends of the two movable rods (43) are respectively connected with the back of the reflecting parabolic mirror (1).
3. A two-stage focusing condenser according to claim 2, characterized in that The angle adjusting seat (4) further comprises a T-shaped plate (44), a first connecting rod (45) and a second connecting rod (46); the middle part of the horizontal plate of the T-shaped plate (44) is rotatably connected with the first pin shaft, the other side of the horizontal plate of the T-shaped plate (44) is connected with the plane reflecting mirror (3), and the vertical plate of the T-shaped plate (44) is provided with a waist groove (441); One end of the first connecting rod (45) is rotatably connected with one end of the second connecting rod (46) through a second pin shaft, the second pin shaft is movably arranged in the waist groove (441), the other end of the first connecting rod (45) is rotatably connected with one of the movable rods (43), and the other end of the second connecting rod (46) is rotatably connected with the corresponding fixed side plate (42).
4. A two-stage focusing condenser according to claim 2, wherein The angle adjusting seat (4) comprises an elevation angle driving motor (47), a first gear (48) and a sector gear (49); the elevation angle driving motor (47) is fixed to the bottom plate (41), the output shaft of the elevation angle driving motor (47) is connected to the first gear (48), the first gear (48) is meshed and connected with the sector gear (49), the center of the sector gear (49) is rotationally connected with the first pin shaft and is fixed with the movable rod (43).
5. A two-stage focusing condenser according to claim 1, wherein The angle adjusting seat (4) comprises an azimuth angle driving motor (410), a second gear (411) and a third gear (412); The light guide pipe stand (5) is fixedly sleeved with the second gear (411), the azimuth angle driving motor (410) is fixed to the bottom plate (41), the output shaft of the azimuth angle driving motor (410) is connected to the third gear (412), and the third gear (412) is meshed and connected with the second gear (411).
6. A two-stage focusing condenser according to claim 1, characterized in that One side of the reflecting parabolic mirror (1) facing the secondary reflecting mirror (2) is a concave surface, and one side of the secondary reflecting mirror (2) facing the reflecting parabolic mirror (1) is a convex surface.