Coaxial adjusting device of Dove prism

Abstract

The utility model relates to a coaxial adjusting device of a Dove prism, which belongs to the field of optical machine installation and adjustment and comprises a Dove prism, a Dove prism installation cylinder, a Dove prism adjusting frame and a motor. The Dove prism adjusting frame comprises a first fixing ring and a first adjusting ring, the first fixing ring is coaxial with an output shaft of the motor, the first adjusting ring and the first fixing ring are fixedly connected through a first elastic element, and a first fine adjustment threaded rod is arranged between the first adjusting ring and the first fixing ring; one end of the Dove prism installation cylinder is fixedly connected with the first adjusting ring, an installation through groove is formed in the Dove prism installation cylinder, and the Dove prism is fixedly arranged in the installation through groove. The device has the advantages that the direction of the optical axis of the Dove prism is adjusted through the Dove prism adjusting frame, hole edge rotating imaging is carried out through the motor, images obtained at the collection hole edge have the advantages of being consistent in detection area and overlapping area, small in proportion and the like, meanwhile, the imaging quality is not affected, and the optical detection efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of optical machine assembly and adjustment, and specifically relates to a coaxial adjustment device for a Dove prism. Background Art

[0002] In the defect detection of display panels, the quality around the round holes affects the pixel display at the hole edges. Once there are tiny cracks or other defects at the hole edges, it is only a matter of time before larger areas of bright and dark defects occur. Therefore, a full-screen display must perform sub-micron defect detection on the round hole area.

[0003] Traditional translational imaging schemes can often only perform overlapping coverage detection on arc-shaped areas. The areas to be inspected have different sizes, positions, and shapes in the imaging, and the detection effect and efficiency are not ideal. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a Dove prism adjustment device for hole edge detection.

[0005] The technical solution of the utility model to solve the above technical problem is as follows: A coaxial adjustment device for a Dove prism includes a Dove prism, a Dove prism mounting cylinder, a Dove prism adjustment frame, and a motor;

[0006] The Dove prism adjustment frame includes a first fixing ring and a first adjustment ring arranged in sequence along the axis direction of the motor. The first fixing ring is fixedly connected to the output shaft of the motor and is coaxially arranged. The first adjustment ring and the first fixing ring are fixedly connected by a plurality of first elastic elements, and a plurality of first fine adjustment threaded rods are arranged between the first adjustment ring and the first fixing ring;

[0007] One end of the Dove prism mounting cylinder is fixedly connected to the first adjustment ring. An installation through groove is opened in the Dove prism mounting cylinder, and the Dove prism is fixedly arranged in the installation through groove. The optical axis of the Dove prism is coaxial with the first adjustment ring.

[0008] The beneficial effect of the utility model is: By adjusting the optical axis direction of the Dove prism through the Dove prism adjustment frame and using the motor for rotational imaging of the hole edge, an image with a unified size, position, and shape can be obtained. The image obtained by collecting the hole edge has the advantages of a consistent detection area, a consistent overlapping area, and a small overlapping ratio, etc., and does not affect the imaging quality, greatly improving the optical detection efficiency.

[0009] On the basis of the above technical solution, the utility model can also be improved as follows.

[0010] Further, it further includes a motor adjusting bracket. The motor adjusting bracket includes a second adjusting ring and a second fixing ring arranged in sequence along the motor axis direction. The second adjusting ring and the second fixing ring are fixedly connected by a plurality of second elastic elements, and a plurality of second fine-tuning screw rods are arranged between the second adjusting ring and the second fixing ring.

[0011] The second adjusting ring is coaxial with the motor and fixedly connected to the end of the motor. The first fixing ring, the first adjusting ring, and the Dove prism mounting cylinder are located inside the circumferences of the second adjusting ring and the second fixing ring.

[0012] The beneficial effect of adopting the above further solution is: to increase the angle adjustment function of the motor axis, making the adjustment range larger and the applicability stronger.

[0013] Further, a first locking screw is also arranged between the first adjusting ring and the first fixing ring.

[0014] The beneficial effect of adopting the above further solution is: to lock the first adjusting ring and the first fixing ring, prevent shaking, and increase stability.

[0015] Further, a second locking screw is also arranged between the second adjusting ring and the second fixing ring.

[0016] The beneficial effect of adopting the above further solution is: to lock the second adjusting ring and the second fixing ring, prevent shaking, and increase stability.

[0017] Further, a base is fixedly provided at the bottom of the second fixing ring.

[0018] The beneficial effect of adopting the above further solution is: to facilitate the installation and fixation of the motor adjusting bracket.

[0019] Further, a plurality of kidney-shaped fixing holes are formed in the base.

[0020] The beneficial effect of adopting the above further solution is: to facilitate the fine-tuning of the position of the motor adjusting bracket.

[0021] Further, a plurality of threaded holes are formed in the outer peripheral wall of the Dove prism mounting cylinder, and the threaded holes communicate with the installation through slots.

[0022] The beneficial effect of adopting the above further solution is: the screw is screwed into the threaded hole to abut against the side wall of the Dove prism for fixation.

[0023] Further, the installation through slot is filled with photocuring glue.

[0024] The beneficial effect of adopting the above further solution is: the photocuring glue bonds the Dove prism.

[0025] Further, both the first elastic element and the second elastic element are tension springs.

[0026] The beneficial effect of adopting the above further solution is that each fixed ring and adjusting ring are close to each other, and the fine-tuning screw rod is cooperated to adjust the distance and angle.

[0027] Further, the motor is a DD motor.

[0028] The beneficial effect of adopting the above further solution is that the DD motor has a simple structure, reduces mechanical loss, has low noise, and has openings on the inner side of the DD motor to avoid the optical axis of the Dove prism, and the structure is compact. Description of the Drawings

[0029] Figure 1 It is a schematic diagram of the Dove prism mounting cylinder of the present utility model.

[0030] Figure 2 It is a schematic diagram of the Dove prism adjusting frame of the present utility model.

[0031] Figure 3 It is a schematic diagram of the motor adjusting frame of the present utility model.

[0032] Figure 4 It is a combined schematic diagram of the present utility model.

[0033] In the drawings, the list of components represented by each reference numeral is as follows:

[0034] 1, Dove prism; 2, Dove prism mounting cylinder; 3, Dove prism adjusting frame; 4, motor; 5, motor adjusting frame;

[0035] 201, installation through groove; 202, threaded hole;

[0036] 301, first fixed ring; 302, first adjusting ring; 303, first fine-tuning screw rod; 304, first locking screw;

[0037] 501, second adjusting ring; 502, second fixed ring; 503, second fine-tuning screw rod; 504, second locking screw; 505, base; 506, kidney-shaped fixing hole. Specific Embodiments

[0038] The principles and features of the present utility model will be described below with reference to the drawings. The examples given are only for explaining the present utility model and are not intended to limit the scope of the present utility model.

[0039] Embodiment 1

[0040] As Figures 1 to 4 shown, a coaxial adjustment device for a Dove prism includes a Dove prism 1, a Dove prism mounting cylinder 2, a Dove prism adjusting frame 3, and a motor 4;

[0041] The Dove prism adjusting bracket 3 includes a first fixing ring 301 and a first adjusting ring 302 arranged in sequence along the axis direction of the motor 4. The first fixing ring 301 is fixedly connected to the output shaft of the motor 4 and is coaxially arranged. The first adjusting ring 302 is fixedly connected to the first fixing ring 301 through a plurality of first elastic elements. A plurality of first fine adjustment threaded rods 303 are arranged between the first adjusting ring 302 and the first fixing ring 301;

[0042] One end of the Dove prism mounting cylinder 2 is fixedly connected to the first adjusting ring 302. An installation through groove 201 is opened in the Dove prism mounting cylinder 2. The Dove prism 1 is fixedly arranged in the installation through groove 201. The optical axis of the Dove prism 1 is coaxial with the first adjusting ring 302.

[0043] The beneficial effect of this embodiment is that by adjusting the optical axis direction of the Dove prism 1 through the Dove prism adjusting bracket 3 and using the motor 4 to perform imaging by rotating along the hole edge, an image with unified size, position, and shape can be obtained. The images obtained at the hole edge have the advantages of consistent detection areas, consistent overlapping areas, and small proportions. At the same time, the imaging quality is not affected, and the optical detection efficiency is greatly improved.

[0044] Specifically, the Dove prism 1 is an image rotator. After the light passes through this prism, the image is inverted by 180°. In addition, when this prism rotates around its optical axis, the rotation angle of the image is twice the rotation angle of the prism;

[0045] The motor 4, as the driving device of the Dove prism 1, drives the Dove prism 1 to perform a circular motion around the axis, and cooperates with the XY-axis moving stage to move and rotate along the required arc edge or part of the arc edge of the product, realizing 360° imaging of the entire hole edge.

[0046] In this embodiment, the middle of the first fixing ring 301 and the first adjusting ring 302 is hollowed out. One end of the Dove prism mounting cylinder 2 is fixedly provided with an end panel, and the end panel is fixedly connected to the first adjusting ring 302 through screws. The other end of the Dove prism mounting cylinder 2 is located inside the first fixing ring 301 and the first adjusting ring 302;

[0047] When it is necessary to adjust the optical axis direction of the Dove prism 1, rotate each first fine adjustment threaded rod 303 to adjust the angle and distance between the first adjusting ring 302 and the first fixing ring 301, so as to realize the pitch and yaw adjustment of the spatial attitude of the Dove prism 1, and further change the angle between the optical axis direction of the Dove prism 1 and the axis of the motor 4. Observe the position change of the optical axis laser in the external sensor to make it gradually tend to be coaxial.

[0048] In this embodiment, both the first fine adjustment threaded rods 303 and the first elastic elements are more than two, and are distributed between the first fixing ring 301 and the first adjusting ring 302 around the axis of the first fixing ring 301.

[0049] Embodiment 2

[0050] As Figures 3 to 4 shown, preferably, on the basis of Embodiment 1, a motor adjusting bracket 5 is further included. The motor adjusting bracket 5 includes a second adjusting ring 501 and a second fixing ring 502 arranged in sequence along the axis direction of the motor 4. The second adjusting ring 501 and the second fixing ring 502 are fixedly connected by a plurality of second elastic elements. A plurality of second fine adjustment threaded rods 503 are arranged between the second adjusting ring 501 and the second fixing ring 502;

[0051] The second adjusting ring 501 is coaxial with the motor 4 and fixedly connected to the end of the motor 4. The first fixing ring 301, the first adjusting ring 302, and the Dove prism mounting cylinder 2 are located inside the circumferences of the second adjusting ring 501 and the second fixing ring 502.

[0052] The beneficial effect of adopting the preferred scheme in the above embodiment is: increasing the angle adjustment function of the axis of the motor 4, making the adjustment range larger and the applicability stronger.

[0053] In this embodiment, the middle of the second adjusting ring 501 and the second fixing ring 502 is hollowed out to facilitate the laser to pass through. Rotating the second fine adjustment threaded rod 503 to adjust the distance and angle between the second adjusting ring 501 and the second fixing ring 502 can realize the pitching and yaw adjustment of the spatial attitude of the motor 4, and further change the angle between the rotation axis of the motor 4 and the external optical axis laser, ensuring that when the motor 4 rotates, the optical axis laser rotates around its center and the position remains unchanged.

[0054] In this embodiment, both the second fine adjustment threaded rod 503 and the second elastic elements are more than two, and are distributed between the second adjusting ring 501 and the second fixing ring 502 around the axis of the second fixing ring 502.

[0055] The specific coaxial adjustment method steps are as follows:

[0056] The first step is to confirm before debugging that the external optical axis laser to be coaxial can be observed by the sensor at the far end, then shoot it into the center of one end of the motor adjusting bracket 5 and shoot out from the center of the other end of the motor 4, and place a sensor at the far end of the shot to observe the position change of the optical axis laser;

[0057] The second step is that according to the imaging characteristics of the Dove prism 1, the angle adjustment of the Dove prism 1 includes two parts, namely, the optical axis of the Dove prism 1 is coaxial with the rotation center of the motor 4, and the rotation center of the motor 4 is coaxial with the external optical axis laser;

[0058] Adjust the distance between the first adjusting ring 302 and the first fixing ring 301 through the first fine-adjusting screw rod 303 of the Dove prism adjusting bracket 3, thereby changing the angle between the optical axis of the Dove prism 1 and the rotation center of the motor 4. Observe the position change of the optical axis laser in the external sensor and make it gradually tend to be coaxial. The purpose of this step is to make the optical axis laser return to the same position every time the motor 4 rotates 180 degrees;

[0059] In the third step, adjust the distance between the second adjusting ring 501 and the second fixing ring 502 through the second fine-adjusting screw rod 503 of the motor adjusting bracket 5, thereby changing the angle between the rotation center of the motor 4 and the external optical axis laser. Observe the position change of the optical axis laser in the external sensor and make it gradually tend to be coaxial. The purpose of this step is to make the optical axis laser rotate around its center and keep its position unchanged when the motor 4 rotates.

[0060] The second step and the third step can be adjusted alternately, which is more intuitive, regular, and convenient and fast for adjustment.

[0061] Embodiment 3

[0062] As Figure 2 shown, preferably, on the basis of Embodiments 1-2, a first locking screw 304 is further provided between the first adjusting ring 302 and the first fixing ring 301.

[0063] The beneficial effect of adopting the preferred scheme in the above embodiment is: locking the first adjusting ring 302 and the first fixing ring 301 to prevent shaking and increase stability.

[0064] Embodiment 4

[0065] As Figure 3 shown, preferably, on the basis of Embodiments 1-3, a second locking screw 504 is further provided between the second adjusting ring 501 and the second fixing ring 502.

[0066] The beneficial effect of adopting the preferred scheme in the above embodiment is: locking the second adjusting ring 501 and the second fixing ring 502 to prevent shaking and increase stability.

[0067] Embodiment 5

[0068] As Figures 1 to 4 shown, preferably, on the basis of Embodiments 1-4, a base 505 is fixedly provided at the bottom of the second fixing ring 502.

[0069] The beneficial effect of adopting the preferred scheme in the above embodiment is: facilitating the installation and fixing of the motor adjusting bracket 5.

[0070] Preferably, a plurality of kidney-shaped fixing holes 506 are formed in the base 505.

[0071] The beneficial effects of adopting the preferred solution in the above embodiment are as follows: it is convenient to finely adjust the position of the motor adjusting bracket 5.

[0072] Embodiment 6

[0073] As Figure 2 shown, preferably, on the basis of Embodiments 1-5, a plurality of threaded holes 202 are formed in the outer peripheral wall of the Dove prism mounting cylinder 2, and the threaded holes 202 communicate with the mounting through groove 201.

[0074] The beneficial effects of adopting the preferred solution in the above embodiment are as follows: the screw is screwed into the threaded hole 202 to abut against the side wall of the Dove prism 1 for fixation.

[0075] Preferably, the mounting through groove 201 is filled with photocuring glue.

[0076] The beneficial effects of adopting the preferred solution in the above embodiment are as follows: the photocuring glue bonds the Dove prism 1.

[0077] Specifically, in this embodiment, the threaded holes 202 are perpendicular to the length direction of the mounting through groove 201. First, the Dove prism 1 is placed in the mounting through groove 201, then the screw is screwed in to abut against the side wall of the Dove prism 1, and then the photocuring glue is filled for bonding and fixation.

[0078] Embodiment 7

[0079] As Figures 1 to 4 shown, preferably, on the basis of Embodiments 1-6, both the first elastic element and the second elastic element are tension springs.

[0080] The beneficial effects of adopting the preferred solution in the above embodiment are as follows: it makes each fixing ring and adjusting ring approach each other, and cooperates with the fine adjustment screw rod to adjust the distance and angle.

[0081] Embodiment 8

[0082] As Figures 1 to 4 shown, preferably, on the basis of Embodiments 1-7, the motor 4 is a DD motor.

[0083] The beneficial effects of adopting the preferred solution in the above embodiment are as follows: the DD motor has a simple structure, reduces mechanical loss, has low noise, and has an opening inside the DD motor to avoid the optical axis of the Dove prism 1, and the structure is compact.

[0084] Specifically, the DD motor is a motor that directly drives the load and has no traditional mechanical transmission system, and has the same principle as the permanent magnet synchronous motor or the AC synchronous motor;

[0085] A hollow hole is formed in the middle of the DD motor, the Dove prism adjusting bracket 3 is located in the hollow hole of the DD motor, and the optical axis of the Dove prism 1 passes through the hollow hole.

[0086] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0087] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed 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 at least one such feature. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0088] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "coupling", "fixation", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. 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.

[0089] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0090] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0091] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations on the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A coaxial adjustment device for a Dove prism, characterized in that It includes a Dove prism (1), a Dove prism mounting cylinder (2), a Dove prism adjusting bracket (3), and a motor (4); The Dove prism adjusting bracket (3) includes a first fixing ring (301) and a first adjusting ring (302) arranged in sequence along the axis direction of the motor (4). The first fixing ring (301) is fixedly connected to the output shaft of the motor (4) and is coaxially arranged. The first adjusting ring (302) is fixedly connected to the first fixing ring (301) through a plurality of first elastic elements. A plurality of first fine-tuning threaded rods (303) are arranged between the first adjusting ring (302) and the first fixing ring (301); One end of the Dove prism mounting cylinder (2) is fixedly connected to the first adjusting ring (302). An installation through groove (201) is opened in the Dove prism mounting cylinder (2). The Dove prism (1) is fixedly arranged in the installation through groove (201). The optical axis of the Dove prism (1) is coaxial with the first adjusting ring (302).

2. The coaxial adjustment device for a Dove prism according to claim 1, characterized in that It also includes a motor adjusting bracket (5). The motor adjusting bracket (5) includes a second adjusting ring (501) and a second fixing ring (502) arranged in sequence along the axis direction of the motor (4). The second adjusting ring (501) is fixedly connected to the second fixing ring (502) through a plurality of second elastic elements. A plurality of second fine-tuning threaded rods (503) are arranged between the second adjusting ring (501) and the second fixing ring (502); The second adjusting ring (501) is coaxial with the motor (4) and is fixedly connected to the end of the motor (4). The first fixing ring (301), the first adjusting ring (302), and the Dove prism mounting cylinder (2) are located inside the circumferences of the second adjusting ring (501) and the second fixing ring (502).

3. The coaxial adjustment device for a Dove prism according to claim 1, characterized in that, A first locking screw (304) is also arranged between the first adjusting ring (302) and the first fixing ring (301).

4. The coaxial adjustment device for a Dove prism according to claim 2, characterized in that, A second locking screw (504) is also arranged between the second adjusting ring (501) and the second fixing ring (502).

5. The coaxial adjustment device for a Dove prism according to claim 2, characterized in that, A base (505) is fixedly arranged at the bottom of the second fixing ring (502).

6. The coaxial adjustment device for a Dove prism according to claim 5, characterized in that A plurality of kidney-shaped fixing holes (506) are opened on the base (505).

7. The coaxial adjustment device for a Dove prism according to claim 1, characterized in that, A plurality of threaded holes (202) are opened on the outer peripheral wall of the Dove prism mounting cylinder (2). The threaded holes (202) communicate with the installation through groove (201).

8. The coaxial adjustment device for a Dove prism according to claim 7, characterized in that, The installation through groove (201) is filled with optical curing glue.

9. The coaxial adjustment device for a Dove prism according to claim 2, characterized in that, Both the first elastic element and the second elastic element are tension springs.

10. The coaxial adjustment device for a Dove prism according to any one of claims 1 to 9, characterized in that, The motor (4) is a DD motor.

Images