Positioning device for stray light test

Abstract

The utility model discloses a positioning device for stray light testing, and belongs to the technical field of optical testing. Comprising an outer frame, an inner frame, a positioning clamp, a first driver and a second driver, and the outer frame is provided with a multi-shaft driving mechanism capable of driving the positioning clamp to move and rotate; the multi-shaft driving mechanism comprises a first-stage base and a second-stage base, a rotating disc capable of driving the inner frame to rotate is arranged on the second-stage base, the positioning clamp is slidably connected to the inner frame, and a third driver capable of driving the positioning clamp to move is arranged on the inner frame; a first differential adjusting knob is arranged on the inner frame, and a second differential adjusting knob is arranged on the primary base; a clamping seat arranged on one side of the turntable is arranged on the second-stage base, and a third differential adjusting knob is arranged on the turntable; the second drive and the outer frame move synchronously, and the outer frame is arranged on the first drive in a floating mode. The positioning device for stray light test is high in positioning precision, and can realize multi-axis and multi-angle stray light test.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical testing, and particularly relates to a positioning device for stray light testing. Background Art

[0002] During the production and R & D process of optical lenses, the testing of stray light is an important quality inspection index. Stray light will affect the imaging quality and performance of the optical system. Therefore, accurately measuring the stray light characteristics of the lens is crucial for evaluating the quality and performance of the lens.

[0003] However, the fixtures in the prior art applied to this technology are difficult to meet the positioning requirements of multiple orientations and multiple deflection angles, resulting in certain limitations in the testing conditions.

[0004] Therefore, there is an urgent need for a positioning device for stray light testing that can meet multiple orientations and multiple deflection angles. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a positioning device for stray light testing, which has high positioning accuracy and can realize multi-axis and multi-angle stray light testing.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is: a positioning device for stray light testing, including an outer frame, an inner frame, a positioning fixture, a first drive capable of driving the outer frame to move along a first direction, a second drive capable of driving the outer frame to rotate with a second direction as the rotation axis, and a multi-axis drive mechanism provided on the outer frame and capable of driving the positioning fixture to move and rotate;

[0007] The multi-axis drive mechanism includes a first-stage base slidably connected to the outer frame along the first direction, a second-stage base slidably connected to the first-stage base along the second direction, a turntable provided on the second-stage base and connected to the bottom of the inner frame and capable of driving the inner frame to rotate with a third direction as the rotation axis, the positioning fixture is slidably connected to the inner frame along the third direction, and a third drive capable of driving the positioning fixture to move along the third direction is provided on the inner frame;

[0008] First differential adjustment knobs respectively abutting against both sides of the first-stage base are arranged on the inner frame along the first direction, and second differential adjustment knobs respectively abutting against both sides of the second-stage base are arranged on the first-stage base along the second direction;

[0009] A clamping seat is arranged on the second-stage base on one side of the turntable, and a group of third differential adjustment knobs clamped on both sides of the clamping seat are arranged on the turntable;

[0010] Wherein, the first direction, the second direction, and the third direction are perpendicular to each other pairwise. The second drive can move synchronously with the outer frame, and the outer frame is floatingly arranged on the first drive.

[0011] Optionally, the positioning fixture includes two groups of positioning side plates oppositely arranged on the inner frame. The two groups of positioning side plates are clamped to form a plurality of stations capable of supporting the test product, and positioning clamping plates capable of abutting against the test product are respectively arranged on each group of positioning side plates.

[0012] Optionally, the number of the second drives is two. The two second drives are coaxially arranged and symmetrically arranged along the outer frame. The two second drives are respectively placed on two first linear guide rails arranged along the first direction.

[0013] Optionally, the first drive is a servo slide table and a slide seat. The servo slide table can drive the slide seat to move along the first direction. A second linear guide rail is arranged on the slide seat along the third direction. The slider on the second linear guide rail is slidably connected to the outer frame along the first direction, and the slider can only move a fixed distance relative to the outer frame.

[0014] Optionally, the first-level base and the outer frame, and the second-level base and the first-level base are slidably connected through third linear guide rails.

[0015] Optionally, a plurality of groups of guide shafts parallel to each other and slidably penetrating through the positioning fixture are arranged on the inner frame.

[0016] Optionally, the second drive is a servo motor, and the servo motor is electrically connected to an encoder.

[0017] Optionally, the positioning clamping plate is driven by a cylinder.

[0018] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows: The first drive can drive the positioning fixture, the inner frame, the outer frame, the second drive, etc. to displace as a whole along the first direction, enabling the positioning fixture to reach the detection position. The third drive can drive the positioning fixture to move along the third direction. The first differential adjustment knob can drive the first-level base, the second-level base, the turntable, the inner frame, and the positioning fixture to move along the first direction. The second differential adjustment knob can drive the second-level base, the turntable, the inner frame, and the positioning fixture to move along the second direction. The second drive can drive the positioning fixture, the outer frame, the inner frame, etc. to rotate with the second direction as the rotation axis. The third differential adjustment knob can drive the turntable, the inner frame, and the positioning fixture to rotate with the third direction as the rotation axis. The positioning fixture can position and fix the position of the test product. Through the mutual cooperation among the first drive, the second drive, the third drive, the first differential adjustment knob, the second differential adjustment knob, the third differential adjustment knob, and the positioning fixture, the multi-axis rotation and inclination of the positioning fixture are satisfied, facilitating the comprehensive detection of the stray light situation of the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present utility model will be further described below with reference to the drawings and embodiments.

[0020] Figure 1 is a schematic structural diagram of the positioning device for stray light testing in the preferred embodiment of the present utility model;

[0021] Figure 2 is a schematic right-side view structural diagram of the positioning device for stray light testing in the preferred embodiment of the present utility model;

[0022] Figure 3 is in the preferred embodiment of the present utility model Figure 2 is a partial enlarged structural diagram at B;

[0023] Figure 4 is a schematic front view structural diagram of the positioning device for stray light testing in the preferred embodiment of the present utility model;

[0024] Figure 5 is a schematic left-side view structural diagram of the positioning device for stray light testing in the preferred embodiment of the present utility model;

[0025] Figure 6 is in the preferred embodiment of the present utility model Figure 5 is a partial enlarged structural diagram at C;

[0026] Among them, 1. Outer frame; 2. Inner frame; 3. First drive; 301. Servo slide; 302. Slide base; 4. Second drive; 5. First-stage base; 6. Second-stage base; 601. Clamping seat; 7. Turntable; 8. Third drive; 9. First differential adjustment knob; 10. Second differential adjustment knob; 11. Third differential adjustment knob; 12. Positioning side plate; 13. Positioning clamping plate; 14. First linear guide rail; 15. Second linear guide rail; 1501. Slide block; 16. Third linear guide rail; 17. Guide shaft. Detailed implementation mode

[0027] Now, the present utility model will be further described in detail with reference to the accompanying drawings and embodiments. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.

[0028] It should be noted that if there are directional indications (such as up, down, bottom, top, etc.) involved in this embodiment, then such directional indications are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture. If this specific posture changes, then such directional indications will also change accordingly. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more such features. Unless otherwise clearly specified and defined, the terms "set", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] As Figures 1 - 6 shown, a positioning device for stray light testing includes an outer frame 1, an inner frame 2, a positioning fixture, a first drive 3 capable of driving the outer frame 1 to move in a first direction, and a second drive 4 capable of driving the outer frame 1 to rotate with a second direction as the rotation axis. A multi-axis drive mechanism capable of driving the positioning fixture to move and rotate is provided on the outer frame 1. The multi-axis drive mechanism can drive the positioning fixture to rotate with a certain direction as the rotation axis, and can drive the positioning fixture to move horizontally in multiple directions, so as to meet the positioning requirements of the product;

[0030] Specifically, the multi-axis drive mechanism includes a primary base 5 slidably connected to the outer frame 1 in the first direction, a secondary base 6 slidably connected to the primary base 5 in the second direction. A turntable 7 is provided on the secondary base 6 and is connected to the bottom of the inner frame 2 and can drive the inner frame 2 to rotate about the third direction as the rotation axis. The positioning fixture is slidably connected to the inner frame 2 in the third direction, and a third drive 8 capable of driving the positioning fixture to move in the third direction is provided on the inner frame 2. First differential adjustment knobs 9 respectively facing and abutting on both sides of the primary base 5 are arranged on the inner frame 2 in the first direction, and second differential adjustment knobs 10 respectively facing and abutting on both sides of the secondary base 6 are arranged on the primary base 5 in the second direction. A clamping seat 601 is provided on the secondary base 6 on one side of the turntable 7, and a set of third differential adjustment knobs 11 clamped on both sides of the clamping seat 601 are arranged on the turntable 7. Among them, the first direction, the second direction, and the third direction are perpendicular to each other pairwise. The second drive 4 can move synchronously with the outer frame 1, and the outer frame 1 is floatingly arranged on the first drive 3.

[0031] As described above, the first direction, the second direction, and the third direction respectively correspond to the X-axis, Y-axis, and Z-axis in the spatial rectangular coordinate system. The first drive 3 can drive the positioning fixture, the inner frame 2, the outer frame 1, the second drive 4, etc. to displace as a whole in the first direction, enabling the positioning fixture to reach the detection position. The third drive 8 can drive the positioning fixture to move in the third direction. The first differential adjustment knob 9 can drive the primary base 5, the secondary base 6, the turntable 7, the inner frame 2, and the positioning fixture to move in the first direction. The second differential adjustment knob 10 can drive the secondary base 6, the turntable 7, the inner frame 2, and the positioning fixture to move in the second direction. The second drive 4 can drive the positioning fixture, the outer frame 1, and the inner frame 2, etc. to rotate about the second direction as the rotation axis. The third differential adjustment knob 11 can drive the turntable 7, the inner frame 2, and the positioning fixture to rotate about the third direction as the rotation axis. The positioning fixture can position and fix the position of the test product, and through the stray light test positioning device in this technical solution, the positioning requirements of the positioning fixture in multiple orientations and multiple deflection angles can be met.

[0032] Furthermore, the first differential adjustment knob 9, the second differential adjustment knob 10, and the third differential adjustment knob 11 in the above are all micrometer knobs commonly used in the prior art. In this technical solution, by using the first differential adjustment knob 9 that can act on the primary base 5 in the opposite direction, the second differential adjustment knob 10 that can act on the secondary base 6 in the opposite direction, and the third differential adjustment knob 11 that can act on the turntable 7 through the clamping seat 601 in the opposite direction, the position of the positioning fixture can be precisely fine-tuned in multiple directions to meet the usage requirements of high-precision positioning.

[0033] As described above, such as Figure 1As shown in the figure, the positioning fixture includes two groups of positioning side plates 12 that are oppositely arranged on the inner frame 2. The two groups of positioning side plates 12 are clamped to form several workstations that can support the test products, and positioning clamping plates 13 that can abut against the test products are respectively arranged on each group of positioning side plates 12. The positioning fixture is arranged in multiple layers and can position and fix multiple test products at one time, with higher detection efficiency.

[0034] As described above, the number of the second drives 4 is two. The two second drives 4 are coaxially arranged and symmetrically arranged along the outer frame 1. The two second drives 4 are respectively placed on two first linear guide rails 14 arranged along the first direction to improve the displacement accuracy of the second drives 4.

[0035] Furthermore, the first drive 3 is a servo slide 301 and a slide seat 302. The servo slide 301 can drive the slide seat 302 to move along the first direction. A second linear guide rail 15 is arranged on the slide seat 302 along the third direction. The slider 1501 on the second linear guide rail 15 is slidably connected to the outer frame 1 along the first direction, and the slider 1501 can only move a fixed distance relative to the outer frame 1. When the second drive 4 drives the outer frame 1 to rotate, the slider 1501 can move up and down along the third direction, and the outer frame 1 can move horizontally along the first direction relative to the slider 1501, so as to satisfy the floating connection between the outer frame 1 and the first drive 3.

[0036] As described above, the primary base 5 and the outer frame 1, and the secondary base 6 and the primary base 5 are slidably connected through third linear guide rails 16. A plurality of groups of guide shafts 17 that are parallel to each other and slidably penetrate through the positioning fixture are arranged on the inner frame 2 to improve the displacement accuracy of the positioning fixture in all directions.

[0037] In this embodiment, the second drive 4 is a servo motor, and the servo motor is electrically connected to an encoder to feed back the position data of the outer frame 1 in real time. The positioning clamping plate 13 is driven by a cylinder, and the third drive 8 can also use a cylinder as the power source.

[0038] Working principle: First, a number of products to be detected are successively placed on the workstations between the two groups of positioning side plates 12. Subsequently, the positioning clamping plate 13 can be driven by a cylinder to move towards the product to be detected in the workstation, so that it abuts against both sides of the product to be detected, thereby fixing the position of the product to be detected. Subsequently, the positioning fixture, the inner frame 2, the outer frame 1, the second drive 4, etc. can be driven by the first drive 3 to displace in the first direction, enabling the positioning fixture to reach the detection position. Then, the positioning fixture can be driven by the third drive 8 to lift and lower in the third direction. The first differential adjustment knob 9 can drive the first-stage base 5, the second-stage base 6, the turntable 7, the inner frame 2, and the positioning fixture to move in the first direction, and the second differential adjustment knob 10 can drive the second-stage base 6, the turntable 7, the inner frame 2, and the positioning fixture to move in the second direction. The second drive 4 can drive the positioning fixture, the outer frame 1, the inner frame 2, etc. to rotate with the second direction as the rotation axis, and the third differential adjustment knob 11 can drive the turntable 7, the inner frame 2, and the positioning fixture to rotate with the third direction as the rotation axis. The positioning fixture can position and fix the position of the test product, and through the stray light test positioning device in this technical solution, the positioning requirements of the positioning fixture in multiple orientations and multiple deflection angles can be met.

[0039] Based on the ideal embodiments of the present invention as inspiration, through the above description, relevant personnel can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A positioning device for stray light testing, characterized in that: It includes an outer frame (1), an inner frame (2), a positioning fixture, a first drive (3) capable of driving the outer frame (1) to move in a first direction, and a second drive (4) capable of driving the outer frame (1) to rotate about a second direction as the rotation axis. A multi-axis drive mechanism capable of driving the positioning fixture to move and rotate is provided on the outer frame (1). The multi-axis drive mechanism includes a first-stage base (5) slidably connected to the outer frame (1) in the first direction, and a second-stage base (6) slidably connected to the first-stage base (5) in the second direction. A turntable (7) is provided on the second-stage base (6) and connected to the bottom of the inner frame (2) and capable of driving the inner frame (2) to rotate about a third direction as the rotation axis. The positioning fixture is slidably connected to the inner frame (2) in the third direction, and a third drive (8) capable of driving the positioning fixture to move in the third direction is provided on the inner frame (2). First differential adjustment knobs (9) respectively facing and abutting on both sides of the first-stage base (5) are provided on the inner frame (2) in the first direction. Second differential adjustment knobs (10) respectively facing and abutting on both sides of the second-stage base (6) are provided on the first-stage base (5) in the second direction. A clamping seat (601) is provided on the second-stage base (6) on one side of the turntable (7), and a set of third differential adjustment knobs (11) clamped on both sides of the clamping seat (601) are provided on the turntable (7). Among them, the first direction, the second direction, and the third direction are perpendicular to each other pairwise. The second drive (4) can move synchronously with the outer frame (1), and the outer frame (1) is floatingly arranged on the first drive (3).

2. The stray light test positioning device according to claim 1, characterized in that: The positioning fixture includes two groups of positioning side plates (12) oppositely arranged on the inner frame (2). The two groups of positioning side plates (12) are clamped to form a plurality of workstations capable of supporting test products, and positioning clamping plates (13) capable of abutting against the test products are respectively provided on each group of positioning side plates (12).

3. The stray light test positioning device according to claim 1, wherein: The number of the second drives (4) is two. The two second drives (4) are coaxially arranged and symmetrically arranged along the outer frame (1). The two second drives (4) are respectively arranged on two first linear guide rails (14) arranged in the first direction.

4. The stray light test positioning device according to claim 1, wherein: The first drive (3) is a servo slide (301) and a slide base (302). The servo slide (301) can drive the slide base (302) to move in the first direction. A second linear guide rail (15) is arranged on the slide base (302) in the third direction. A slider (1501) on the second linear guide rail (15) is slidably connected to the outer frame (1) in the first direction, and the slider (1501) can only move a fixed distance relative to the outer frame (1).

5. The stray light test positioning device according to claim 1, characterized in that: The first-stage base (5) and the outer frame (1), and the second-stage base (6) and the first-stage base (5) are slidably connected through third linear guide rails (16).

6. The stray light test positioning device according to claim 1, characterized in that: A plurality of groups of guide shafts (17) that are parallel to each other and slidably penetrate through the positioning fixture are provided on the inner frame (2).

7. The stray light test positioning device according to claim 1, wherein: The second drive (4) is a servo motor, and an encoder is electrically connected to the servo motor.

8. The stray light test positioning device according to claim 2, characterized in that: The positioning clamping plate (13) is driven by a cylinder.

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