Optical bench

Abstract

The utility model belongs to the field of additive manufacturing relates to an optical adjusting frame, including adjusting frame base, adjusting seat and first differential adjusting head, adjusting frame base and adjusting seat are arranged in parallel, first differential adjusting head is through adjusting frame base and is connected with adjusting seat, spring tensioning assembly is arranged between adjusting frame base and adjusting seat. The utility model provides an optical adjusting frame that is high in adaptability, can realize quick switching and improves the adjusting efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of additive manufacturing and relates to an optical adjustment frame. Background Technology

[0002] In additive manufacturing, to achieve requirements such as area forming or precision forming, it is necessary to perform beam shaping and optical path adjustment on the existing optical system. At this time, the optical path system becomes more complex, requiring more types and quantities of optical components, and demanding higher precision. Optical components include convex lenses, concave lenses, apertures, half-wave plates, beam splitters, and targets. When assembling and calibrating the optical system, it is necessary to independently adjust optical components of different sizes and with different requirements. The lens clamping structure often needs to be redesigned according to specific requirements, resulting in longer design time, longer adjustment time, and higher material costs, thus increasing the overall cost of the optical system. Utility Model Content

[0003] In order to solve the above-mentioned technical problems in the background art, the present invention provides an optical adjustment frame that is highly adaptable, can achieve rapid switching, and improves adjustment efficiency.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An optical adjustment frame, characterized in that: the optical adjustment frame includes an adjustment frame base, an adjustment seat, and a first differential adjustment head; the adjustment frame base and the adjustment seat are arranged in parallel; the first differential adjustment head passes through the adjustment frame base and is connected to the adjustment seat; a spring tensioning assembly is provided between the adjustment frame base and the adjustment seat.

[0006] The aforementioned adjustment frame base includes a base body; the base body is generally L-shaped or U-shaped; the base body and the adjustment seat are arranged in parallel; the base body is provided with a micro-adjustment head through hole and a tension spring through hole; the first micro-adjustment head passes through the micro-adjustment head through hole and is connected to the adjustment seat; one end of the spring tension assembly is placed on the base body, and the other end passes through the tension spring through hole and is connected to the adjustment seat.

[0007] The aforementioned adjustment frame base also includes positioning pins disposed on the side wall and / or bottom of the base body.

[0008] The aforementioned adjustment base includes a frame, a lens mounting assembly, and a first position adjustment assembly; the frame is generally U-shaped; the frame and the base body are arranged parallel to each other; the lens mounting assembly is embedded in the frame; the first position adjustment assembly passes through the side wall of the frame and abuts against the lens mounting assembly; the first differential adjustment head passes through the differential adjustment head through hole and is connected to the frame; one end of the spring tension assembly is placed on the base body, and the other end passes through the tension spring through hole and is connected to the frame.

[0009] The aforementioned first position adjustment assembly includes a second differential adjustment head and a displacement slider; a non-through-side displacement groove is provided on the side wall of the frame; the displacement slider and the second differential adjustment head are disposed opposite each other on both sides of the lens mounting assembly; the second differential adjustment head penetrates the side wall of the frame and abuts against the lens mounting assembly; the displacement slider is placed in the displacement groove; a compression spring is provided between the displacement slider and the displacement groove along the axial direction of the displacement groove; the second differential adjustment head drives the displacement slider to move along the axial direction of the displacement groove through the lens mounting assembly; preferably, a lubricating grease layer is provided between the displacement slider and the lens mounting assembly.

[0010] The aforementioned adjusting seat further includes a second position adjusting component, the axis of which is perpendicular to the axis of which is the first position adjusting component; preferably, the structure of the second position adjusting component is exactly the same as the structure of the first position adjusting component.

[0011] The aforementioned lens mounting assembly includes a lens mounting base; the lens mounting base is provided with a lens embedding hole; and a first lens clamping ring is provided circumferentially in the lens embedding hole.

[0012] The aforementioned adjustment seat also includes a tension spring mounting hole; one end of the spring tension assembly is placed on the base body, and the other end passes through the tension spring through hole and is set in the tension spring mounting hole and connected to the frame.

[0013] The aforementioned spring tension assembly includes an adjusting nut, a spring adjusting post, a tension spring, and a spring end fixing rod. The spring end fixing rod is fixedly embedded in the tension spring mounting hole. The tension spring is positioned in the tension spring mounting hole along its axial direction. One end of the tension spring is fixedly connected to the spring end fixing rod, and the other end is fixed to the head of the spring adjusting post. The spring adjusting post is positioned in the tension spring through hole along its axial direction, and its tail is threaded and extends out of the tension spring through hole. The adjusting nut is positioned outside the base body and threadedly connected to the tail of the spring adjusting post. Preferably, the cross-section of the tension spring through hole is D-shaped. The cross-section of the spring adjusting post matches the cross-section of the tension spring through hole.

[0014] The aforementioned optical adjustment frame also includes a rotating frame; the rotating frame is arranged parallel to the adjustment frame base; the rotating frame includes a frame body and a graduated pin; the frame body includes a wheel and branches extending radially outward from the outer periphery of the wheel; the graduated pin passes through the wheel and is fixedly connected to the wheel; the frame body is connected to the adjustment frame base and / or adjustment seat via the graduated pin; the branches are provided with lens mounting holes; when the frame body rotates, the center of the lens mounting hole coincides with the center of the adjustment seat; a second lens clamping ring is embedded in the lens mounting hole; there are one or more branches; preferably, when there are multiple branches, the structures of the multiple branches are the same or different.

[0015] The advantages of this utility model are:

[0016] This invention provides an optical adjustment frame, including an adjustment frame base, an adjustment seat, and a first differential adjustment head; the adjustment frame base and the adjustment seat are arranged in parallel; the first differential adjustment head passes through the adjustment frame base and connects to the adjustment seat; a spring tensioning assembly is provided between the adjustment frame base and the adjustment seat. This invention enables rapid switching and accurate multi-axis adjustment of optical lenses of different sizes and types, reducing the design of matching tooling and adjustment time, and increasing the efficiency of optical path adjustment. By adjusting or improving the optical adjustment frame, this invention enables rapid adjustment and precise switching of the optical path, reducing the design time for adapting to different optical path systems and the material processing and production time, and avoiding the process of recalibrating the optical path after each replacement of optical components. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the optical adjustment frame (preferred embodiment) provided by this utility model;

[0018] Figure 2 This is a front view structural schematic diagram of the optical adjustment frame (preferred embodiment) provided by this utility model;

[0019] Figure 3 This is a side view of the optical adjustment frame (preferred embodiment) provided by this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the adjustment frame base used in this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the adjustment seat used in this utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the adjustment seat (preferred embodiment) used in this utility model;

[0023] Figure 7This is a schematic diagram showing the usage state of the tension spring used in this utility model;

[0024] Figure 8 This is a three-dimensional structural diagram of the spring adjusting column used in this utility model;

[0025] Figure 9 This is a schematic diagram of the rotating eyeglass frame used in this utility model;

[0026] in:

[0027] 1-Adjusting frame base; 11-Base body; 12-Through hole for micro-adjustment head; 13-Through hole for tension spring; 14-Positioning pin; 15-First micro-adjustment head; 2-Adjusting seat; 21-Frame; 22-Tension spring mounting hole; 23-Lens mounting seat; 24-First lens clamping ring; 25-First lens; 26-Second micro-adjustment head; 27-Sliding ball; 28-Displacement slider; 29-Compression spring; 210-Displacement groove; 211-Lubricating grease layer; 212-Index pin insertion hole; 3-Rotating frame; 31-Frame body; 32-Index pin; 33-Positioning pin hole; 34-Second lens clamping ring; 35-Second lens; 4-Spring tension assembly; 41-Adjusting nut; 42-Spring adjusting column; 43-Tension spring; 44-Spring end fixing rod. Detailed Implementation

[0028] This invention provides an optical adjustment frame, including an adjustment frame base 1, an adjustment seat 2, and a first differential adjustment head 15. The adjustment frame base 1 and the adjustment seat 2 are arranged in parallel. The first differential adjustment head 15 passes through the adjustment frame base 1 and connects to the adjustment seat 2. A spring tension assembly 4 is provided between the adjustment frame base 1 and the adjustment seat 2. In use, the optical adjustment frame provided by this invention allows for the installation of optical elements, such as convex lenses, concave lenses, DOEs, spherical mirrors, beam splitters, and reflectors, on the adjustment seat 2. Simultaneously, the adjustment frame base 1 is fixed to the optical mounting surface. By adjusting the first differential adjustment head 15 installed on the adjustment frame base 1, the deflection, pitch, and displacement along the optical path of the adjustment seat 2 can be quantitatively adjusted. It should be noted that there can be multiple first differential adjustment heads 15. For example, there can be three first differential adjustment heads arranged in a triangular pattern; or four first differential adjustment heads arranged in a square pattern or an L-shape. The spring tensioning assembly 4 is placed between the adjusting seat 2 and the adjusting frame base 1 to balance the pushing force of the first differential adjusting head 15 installed on the adjusting frame base 1.

[0029] The adjustment frame base 1 used in this utility model includes a base body 11; the base body 11 is generally L-shaped (e.g., ...). Figure 4The base body 11 and the adjustment seat 2 are arranged in parallel. The base body 11 is provided with a micro-adjustment head through hole 12 and a tension spring through hole 13. The first micro-adjustment head 15 passes through the micro-adjustment head through hole 12 and is connected to the adjustment seat 2. One end of the spring tension assembly 4 is placed on the base body 11, and the other end passes through the tension spring through hole 13 and is connected to the adjustment seat 2. For example, in order to ensure that the adjustment frame base 1 is fixed on the optical mounting surface, the adjustment frame base 1 used in this utility model also includes a positioning pin 14 provided on the side wall and / or bottom of the base body 11.

[0030] See Figure 5 This is a schematic diagram of the structure of the adjustment seat 2 used in this utility model. The adjustment seat 2 is an optical element fixing device. The adjustment seat 2 includes a frame 21, a lens mounting assembly, and a first position adjustment assembly. The frame 21 is generally U-shaped. The frame 21 and the base body 11 are arranged parallel to each other. The lens mounting assembly is embedded in the frame 21. The first position adjustment assembly passes through the side wall of the frame 21 and abuts against the lens mounting assembly. The first differential adjustment head 15 passes through the differential adjustment head through hole 12 and is connected to the frame 21. One end of the spring tension assembly 4 is placed on the base body 11, and the other end passes through the tension spring through hole 13 and is connected to the frame 21. For example, the first position adjustment assembly includes a second differential adjustment head 26 and a displacement slider 28; a non-through-side displacement groove 210 is provided on the side wall of the frame 21; the displacement slider 28 and the second differential adjustment head 26 are disposed opposite each other on both sides of the lens mounting assembly; the second differential adjustment head 26 penetrates the side wall of the frame 21 and abuts against the lens mounting assembly; the displacement slider 28 is placed in the displacement groove 210; a compression spring 29 is provided between the displacement slider 28 and the displacement groove 210 along the axial direction of the displacement groove 210 to balance the pushing force of the second differential adjustment head 26; the second differential adjustment head 26 drives the displacement slider 28 to move along the axial direction of the displacement groove 210 through the lens mounting assembly. For example, a lubricating grease layer 211 is provided between the displacement slider 28 and the lens mounting assembly used in this invention to ensure long-term stable operation of the device. Please continue to see Figure 2The adjusting seat 2 used in this invention also includes a second position adjustment component, the axis of which is perpendicular to the axis of the first position adjustment component. The first and second position adjustment components provide quantitative adjustment of the lens mounting seat perpendicular to the incident light direction. For example, the structure of the second position adjustment component is exactly the same as that of the first position adjustment component. The lens mounting component used in this invention includes a lens mounting seat 23; the lens mounting seat 23 is provided with a lens embedding hole; a first lens clamping ring 24 is provided circumferentially in the lens embedding hole. For example, a first lens 25 can be embedded in the lens embedding hole, and the first lens 25 can be a convex lens, a concave lens, a DOE, a spherical lens, a beam splitter, a reflector, or other optical elements. The adjusting seat 2 also includes a tension spring mounting hole 22; one end of the spring tensioning component 4 is placed on the base body 11, and the other end passes through the tension spring through hole 13 and is placed in the tension spring mounting hole 22 and connected to the frame 21. For example, eight preferred sliding balls 27 are arranged on both sides of the lens mounting seat to ensure smooth displacement of the lens mounting seat relative to the housing of the adjusting seat 2.

[0031] In some embodiments, see Figure 1 , Figure 2 as well as Figure 3 The optical adjustment frame provided by this utility model also includes a rotating lens mount 3, thus forming an integral structure composed of an adjustment frame base 1, an adjustment seat 2, and a rotating lens mount 3. This structure differs from the aforementioned structures in that it adds a rotating lens mount 3. Optical elements, the same as or different from the first lens 25, can be installed in the rotating lens mount 3, enabling rapid switching between different optical elements and adjusting the light path for reflection, beam splitting, and shaping, thus expanding the scope of application of this utility model. For example, a reflector can be installed in the adjustment seat 2, leaving the rotating lens mount 3 empty to achieve light path reflection; a beam splitter can be installed in the adjustment seat 2, leaving the rotating lens mount 3 empty to achieve beam splitting; a concave lens can be installed in the rotating lens mount 3, and a convex lens can be installed in the adjustment seat 2 to achieve Galilean beam expansion; both the rotating lens mount 3 and the adjustment seat 2 can be equipped with convex lenses to achieve Keplerian beam expansion; different types of DOE lenses can be installed in the rotating lens mount 3, leaving the adjustment seat 2 empty, enabling rapid switching between various beam shaping configurations on the same light path.

[0032] Of course, in the overall structure, different optical elements can also be set only in the rotating frame 3. By rotating the rotating frame 3, the optical elements set on the rotating frame 3 can be used alternately. When the overall structure is formed, the structural diagram of the adjustment seat 2 provided by this utility model is as follows. Figure 6 As shown. Figure 6 The structure of the adjusting seat 2 shown is similar to Figure 5The structure of the adjustment base 2 is basically the same as that shown, except that a dividing pin insertion hole 212 is provided on the frame 21. At this time, the rotating lens frame 3 can be set on the adjustment base 2 by connecting pins, especially at the corner of the adjustment base 2. At this time, when rotating the rotating lens frame 3, it can be ensured that the optical elements on the rotating lens frame 3 coincide with the positions on the adjustment base 2, especially with the lens mounting assembly. This facilitates the laser to pass through the first lens 25 and the optical elements on the rotating lens frame 3 in sequence.

[0033] See Figure 3 The rotating frame 3 and the adjusting frame base 1 are arranged in parallel. See also Figure 1 , Figure 2 , Figure 3 as well as Figure 9 The rotating frame 3 includes a frame body 31 and a dividing pin 32. The frame body 31 includes a wheel and branches extending radially outward from the outer periphery of the wheel. The dividing pin 32 passes through the wheel and is fixedly connected to it. The frame body 31 is connected to the adjustment base 1 and / or the adjustment seat 2 via the dividing pin 32. Lens mounting holes are provided on the branches. When the frame body 31 rotates, the center of the lens mounting hole coincides with the center of the adjustment seat 2. A second lens clamping ring 34 is embedded in the lens mounting hole. There are one or more branches. Preferably, when there are multiple branches, the structures of the multiple branches are the same or different. For example, see [link to example]. Figure 9 This utility model adopts four branches to form a four-pointed star-shaped structure. The structure of each branch is completely identical. A second lens 35 can be embedded in each branch. The second lens 35 can be the same or different optical elements.

[0034] The rotating frame 3 is connected to the adjusting base 2 via a preferred indexing pin, and can be installed on both sides of the focusing base 2 according to the actual installation position of the adjusting base 2. The indexing pin 32 used in this invention can strictly control the rotation angle of the rotating frame 3 each time the lens is switched, and is equipped with a positioning pin hole 33 for auxiliary positioning. The preferred ball screw located on the adjusting base 2 slides into the positioning pin hole 33 after each adjustment, ensuring a precise 45° adjustment per adjustment. The second lens clamping ring 34 is flexibly customized according to different optical element sizes, realizing the adaptation of various optical elements such as convex lenses, concave lenses, DOE, empty, beam splitters, and reflectors, and realizing the multi-functional control of the optical path by the optical adjustment frame.

[0035] Compared to most existing "embedded" tension spring structures, this invention optimizes the structure of the spring tension assembly 4. See also... Figure 7The spring tension assembly 4 used in this utility model includes an adjusting nut 41, a spring adjusting post 42, a tension spring 43, and a spring end fixing rod 44. The spring end fixing rod 44 is fixedly embedded in the tension spring mounting hole 22. The tension spring 43 is placed in the tension spring mounting hole 22 along the axial direction. One end of the tension spring 43 is fixedly connected to the spring end fixing rod 44, and the other end is fixed to the head of the spring adjusting post 42. The spring adjusting post 42 is arranged in the tension spring through hole 13 along the axial direction, and the tail of the spring adjusting post 42 is threaded and extends out of the tension spring through hole 13. The adjusting nut 41 is placed outside the base body 11 and is threadedly connected to the tail of the spring adjusting post 42. See also Figure 4 The cross-section of the tension spring through hole 13 is D-shaped; see also Figure 8 The cross-section of the spring adjusting post 42 matches the cross-section of the tension spring through hole 13. For example, both ends of the tension spring 43 are provided with hooks, which can be arranged parallel or perpendicular according to actual needs. One end of the tension spring 43 is fixed to the adjusting seat 2 via the spring end fixing rod 44, and the other end is connected to the adjusting frame base 1 via the spring adjusting post 42. The tail of the spring adjusting post has threads, and the middle part of the spring adjusting post 42 is a circle with a straight section cut off, giving it an overall D-shaped cross-section. The spring adjusting post 42 can pass precisely through the tension spring through hole 13 in the adjusting frame base 1, restricting the axial rotation of the spring adjusting post 42, thus limiting its movement and ensuring it can only move axially. The adjusting nut 41 engages with the threaded connection of the spring adjusting post 42, allowing the spring adjusting post 42 to move axially and adjusting the tension of the tension spring 43. This improves the problem of decreased device accuracy caused by fatigue of the tension spring 43 after long-term adjustment and use, as well as the assembly problem of needing to overcome a large amount of tension in the tension spring 43 to complete the replacement and installation of the tension spring 43.

[0036] In practical use, the optical adjustment frame provided by this utility model is as follows: First, the required optical elements are assembled in the adjustment base 2 and / or the rotating frame 3, and different optical elements are fixed by the first lens clamping ring 24 and / or the second lens clamping ring 34; the tension of the spring tensioning assembly 4 between the adjustment frame base 1 and the adjustment base 2 is adjusted to make the tension of the spring tensioning assembly 4 on the adjustment base 2 the same; the adjustment frame base 1 is fixed to the optical mounting plane, and its precise installation position is determined by two positioning pins; the first differential adjustment head 15 located on the adjustment frame base 1 and the second differential adjustment head 26 located on the adjustment base 2 are adjusted to complete the precise adjustment of different positions of the optical elements; the rotating frame 3 is used as needed to complete the switching of different optical elements.

Claims

1. An optical adjustment frame, characterized in that: The optical adjustment frame includes an adjustment frame base (1), an adjustment seat (2), and a first differential adjustment head (15); the adjustment frame base (1) and the adjustment seat (2) are arranged in parallel; the first differential adjustment head (15) passes through the adjustment frame base (1) and is connected to the adjustment seat (2); a spring tensioning assembly (4) is provided between the adjustment frame base (1) and the adjustment seat (2).

2. The optical adjustment frame according to claim 1, characterized in that: The adjustment frame base (1) includes a base body (11); the base body (11) is generally L-shaped or U-shaped; the base body (11) and the adjustment seat (2) are arranged in parallel; the base body (11) is provided with a differential adjustment head through hole (12) and a tension spring through hole (13); the first differential adjustment head (15) passes through the differential adjustment head through hole (12) and is connected to the adjustment seat (2); one end of the spring tension assembly (4) is placed on the base body (11), and the other end passes through the tension spring through hole (13) and is connected to the adjustment seat (2).

3. The optical adjustment frame according to claim 2, characterized in that: The adjustment frame base (1) also includes positioning pins (14) disposed on the side wall and / or bottom of the base body (11).

4. The optical adjustment frame according to claim 3, characterized in that: The adjustment seat (2) includes a frame (21), a lens mounting assembly, and a first position adjustment assembly; the frame (21) is generally U-shaped; the frame (21) and the base body (11) are arranged in parallel; the lens mounting assembly is embedded in the frame (21); the first position adjustment assembly passes through the side wall of the frame (21) and abuts against the lens mounting assembly; the first differential adjustment head (15) passes through the differential adjustment head through hole (12) and is connected to the frame (21); one end of the spring tension assembly (4) is placed on the base body (11), and the other end passes through the tension spring through hole (13) and is connected to the frame (21).

5. The optical adjustment frame according to claim 4, characterized in that: The first position adjustment assembly includes a second differential adjustment head (26) and a displacement slider (28); a non-through-side displacement groove (210) is provided on the side wall of the frame (21); the displacement slider (28) and the second differential adjustment head (26) are arranged opposite to each other on both sides of the lens mounting assembly; the second differential adjustment head (26) penetrates the side wall of the frame (21) and abuts against the lens mounting assembly; the displacement slider (28) is placed in the displacement groove (210); a compression spring (29) is provided between the displacement slider (28) and the displacement groove (210) along the axial direction of the displacement groove (210); the second differential adjustment head (26) drives the displacement slider (28) to move along the axial direction of the displacement groove (210) through the lens mounting assembly; preferably, a lubricating grease layer (211) is provided between the displacement slider (28) and the lens mounting assembly.

6. The optical adjustment frame according to claim 5, characterized in that: The adjusting seat (2) further includes a second position adjusting component, the axis of which is perpendicular to the axis of which is the first position adjusting component; preferably, the structure of the second position adjusting component is exactly the same as the structure of the first position adjusting component.

7. The optical adjustment frame according to claim 6, characterized in that: The lens mounting assembly includes a lens mounting base (23); the lens mounting base (23) is provided with a lens embedding hole; a first lens clamping ring (24) is provided circumferentially in the lens embedding hole.

8. The optical adjustment frame according to claim 7, characterized in that: The adjusting seat (2) also includes a tension spring mounting hole (22); one end of the spring tensioning assembly (4) is placed on the base body (11), and the other end passes through the tension spring through hole (13) and is set in the tension spring mounting hole (22) and connected to the frame (21).

9. The optical adjustment frame according to claim 8, characterized in that: The spring tension assembly (4) includes an adjusting nut (41), a spring adjusting post (42), a tension spring (43), and a spring end fixing rod (44); the spring end fixing rod (44) is fixedly embedded in the tension spring mounting hole (22); the tension spring (43) is placed in the tension spring mounting hole (22) along the axial direction of the tension spring mounting hole (22); one end of the tension spring (43) is fixedly connected to the spring end fixing rod (44), and the other end is fixed to the head of the spring adjusting post (42); The spring adjusting post (42) is arranged in the tension spring through hole (13) along the axial direction of the tension spring through hole (13). The tail of the spring adjusting post (42) is threaded and extends out of the tension spring through hole (13). The adjusting nut (41) is placed outside the base body (11) and threadedly connected to the tail of the spring adjusting post (42). Preferably, the cross-section of the tension spring through hole (13) is D-shaped. The cross-section of the spring adjusting post (42) matches the cross-section of the tension spring through hole (13).

10. The optical adjustment frame according to any one of claims 1-9, characterized in that: The optical adjustment frame also includes a rotating frame (3); the rotating frame (3) is arranged in parallel with the adjustment frame base (1); the rotating frame (3) includes a frame body (31) and a dividing pin (32); the frame body (31) includes a wheel and a branch extending outward from the outer periphery of the wheel along the radial direction of the wheel; the dividing pin (32) passes through the wheel and is fixedly connected to the wheel; the frame body (31) is connected to the adjustment frame base (1) and / or the adjustment seat (2) through the dividing pin (32); the branch is provided with a lens mounting hole; when the frame body (31) rotates, the center of the lens mounting hole coincides with the center of the adjustment seat (2); a second lens clamping ring (34) is embedded in the lens mounting hole; the branch is one or more; preferably, when the branch is multiple, the structures of the multiple branches are the same or different.

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