Positioning jig, optical detection system and optical detection method

Abstract

The invention discloses a positioning jig, an optical detection system and an optical detection method, and belongs to the technical field of display detection. The positioning jig comprises a jig body; the mounting groove is formed in the front face of the jig body and extends in the first direction, a through hole is formed in the groove bottom of the mounting groove, and a light shield for inserting a probe is arranged in the mounting groove; the first inserting groove is formed in the back face of the jig body and extends in the second direction, and the first inserting groove is communicated with the mounting groove through the through hole; the second slot is formed in the side face of the jig body and extends in the second direction, the second slot is communicated with the first slot, and a display of the product can penetrate through the second slot and be inserted into the first slot. The detection precision of the product is prevented from being influenced by light leakage, and the detection efficiency of the product is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of display detection, and in particular to a positioning fixture, an optical detection system and an optical detection method. Background Art

[0002] Si-OLED (silicon-based microdisplay) displays require analysis of brightness and color. The industry commonly uses optical testers to test product parameters for product debugging.

[0003] Because the ambient light will interfere with the detection data, a sunshade is added to the probe part, and the sunshade is pressed onto the glass cover of the product display area. On the one hand, the diameter of the tip hole of the sunshade is 7mm. Because the product size is less than 7mm wide, the sunshade cannot be completely pressed onto the glass cover of the display area, resulting in light leakage from the sunshade, affecting the accuracy of the probe's detection of the product. On the other hand, when changing the detection product, the probe needs to be repeatedly lifted and then pressed down to detect the next product, resulting in low product detection efficiency.

[0004] Therefore, it is urgent to provide a positioning fixture to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a positioning fixture, an optical detection system and an optical detection method to avoid light leakage affecting the detection accuracy of products and improve the detection efficiency of products.

[0006] In order to achieve the above objectives, the following technical solutions are provided:

[0007] Positioning fixtures, including:

[0008] Fixture body;

[0009] A mounting groove is provided on the front side of the fixture body and extends along the first direction, a through hole is provided at the bottom of the mounting groove, and a light shield of the probe is inserted into the mounting groove;

[0010] A first slot is disposed on the back side of the fixture body and extends along the second direction, wherein the first slot is connected to the mounting slot through the through hole;

[0011] A second slot is arranged on a side surface of the fixture body and extends along the second direction. The second slot is communicated with the first slot. The display of the product can pass through the second slot and be inserted into the first slot.

[0012] As an optional solution for the positioning fixture, the mounting groove is a tapered groove, and the mounting groove and the through hole are arranged coaxially.

[0013] As an optional solution for the positioning fixture, the first slot is a rectangular slot, and avoidance slots are provided at right angles of the first slot, and the avoidance slots are connected to the first slot.

[0014] As an optional solution for the positioning jig, the slot width of the second slot gradually decreases in a direction approaching the first slot.

[0015] As an optional solution for the positioning fixture, the bottom of the second slot is provided with an avoidance slope.

[0016] As an optional solution for the positioning jig, the four corners of the jig body are all provided with rounded corners.

[0017] An optical inspection system includes a probe with a light shield, a lifting mechanism and the positioning fixture as described above, wherein the probe is arranged at the movable end of the lifting mechanism, the probe can move along a first direction and allow the light shield to be inserted into the mounting groove of the positioning fixture, the probe is arranged coaxially with the through hole of the positioning fixture, and the probe is used to detect the optical parameters of the product.

[0018] As an optional solution for the optical inspection system, the optical inspection system also includes a temperature control platform, the positioning fixture is placed on the temperature control platform, and an inspection insertion area is formed between the first slot of the positioning fixture and the temperature control platform, and the inspection insertion area is used to insert the display of the product.

[0019] As an optional solution for the optical detection system, the lifting mechanism includes a column, a rack, and a gear with a handle. The rack is slidably arranged in the column along the first direction, the gear is rotatably arranged in the column, the rack and the gear are meshed for transmission, and the probe is fixedly connected to the rack.

[0020] The optical inspection method uses the optical inspection system as described above to inspect the display of the product, and includes the following steps:

[0021] S1. Place the back of the positioning fixture on the temperature control platform;

[0022] S2, lowering the probe in a first direction through a lifting mechanism so that the light shield is inserted into the mounting groove of the positioning fixture;

[0023] S3, inserting the display of the product to be tested into the first slot of the positioning fixture to perform optical parameter testing, and pulling out the product after the test is completed;

[0024] S4, determining whether all products have been inspected, if not, repeating the previous step; if yes, the lifting mechanism raises the probe along the first direction to separate the light shield from the positioning fixture.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The positioning jig provided by the present invention is provided with a first slot extending along the second direction on the back of the jig body, and a second slot extending along the second direction on the side of the jig body, so that the display of the product can pass through the second slot along the second direction and be inserted into the first slot. A mounting slot extending along the first direction is provided on the front of the jig body, wherein the mounting slot and the first slot are connected by a through hole, and when the light shield of the probe is inserted into the mounting slot, it is convenient to detect the optical parameters of the display. When the width of the display of the product is less than 7mm, by inserting the light shield into the mounting slot of the positioning jig, light leakage that affects the detection accuracy of the product can be avoided. By adding the second slot and the first slot, multiple products can be inserted into the positioning jig for detection along the second direction without lifting the probe, thereby improving the detection efficiency and facilitating batch detection of products.

[0027] In the optical inspection system provided by the present invention, the probe is arranged at the movable end of the lifting mechanism, the probe can move along the first direction and allow the light shield to be inserted into the installation groove of the positioning fixture, the probe is arranged coaxially with the through hole of the positioning fixture, the probe is used to detect the optical parameters of the product, and the product can be inspected without repeatedly lifting the probe, thereby improving the inspection efficiency.

[0028] The optical detection method provided by the present invention improves the detection efficiency and detection accuracy of the display of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0030] Figure 1 This is a structural schematic diagram of a positioning fixture from a first perspective in an embodiment of the present invention;

[0031] Figure 2 It is a structural schematic diagram of the positioning fixture from a second viewing angle in an embodiment of the present invention;

[0032] Figure 3 A top view of a positioning fixture in an embodiment of the present invention;

[0033] Figure 4 for Figure 3 Sectional view along AA direction;

[0034] Figure 5Schematic diagram of the assembly of the optical detection system in an embodiment of the present invention (the rack and gear are not shown);

[0035] Figure 6 An exploded schematic diagram of an optical detection system in an embodiment of the present invention (the rack and gear are not shown);

[0036] Figure 7 Flow chart of the optical detection method in an embodiment of the present invention.

[0037] Reference numerals:

[0038] 100, positioning fixture; 200, probe; 201, light shield; 300, lifting mechanism; 301, column; 302, handle; 400, temperature control platform; 500, product; 501, display;

[0039] 1. fixture body; 11. front; 12. back; 13. side; 14. rounded corner; 2. mounting groove; 21. through hole; 3. first slot; 31. avoidance groove; 4. second slot; 41. avoidance slope. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0041] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or are the positions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0042] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" 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 a mechanical connection or an electrical connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0044] In order to prevent light leakage from affecting the detection accuracy of the product and improve the detection efficiency of the product, this embodiment provides a positioning fixture. Figures 1 to 7 The specific contents of this embodiment are described in detail. It should be noted that the first direction mentioned in this embodiment is Figure 1 The Z direction in this embodiment is Figure 1 in the Y direction.

[0045] The positioning fixture 100 in this embodiment includes a fixture body 1, a mounting slot 2, a first slot 3 and a second slot 4. The mounting slot 2 is arranged on the front 11 of the fixture body 1 and extends along the first direction. A through hole 21 is arranged at the bottom of the mounting slot 2. The mounting slot 2 is used to insert the light shield 201 of the probe 200. The first slot 3 is arranged on the back 12 of the fixture body 1 and extends along the second direction. The first slot 3 is connected to the mounting slot 2 through the through hole 21. The second slot 4 is arranged on the side 13 of the fixture body 1 and extends along the second direction. The second slot 4 is connected to the first slot 3. The display 501 of the product 500 can pass through the second slot 4 and be inserted into the first slot 3. In this embodiment, the inner diameter of the through hole 21 is smaller than the minimum detection size of the light shield 201, so as to achieve a small-size light shielding effect and stabilize the detection effect.

[0046] In short, the positioning jig 100 provided by the present invention is provided with a first slot 3 extending in the second direction on the back 12 of the jig body 1, and a second slot 4 extending in the second direction on the side 13 of the jig body 1, so that the display 501 of the product 500 can pass through the second slot 4 and be inserted into the first slot 3 along the second direction. A mounting slot 2 extending in the first direction is provided on the front 11 of the jig body 1, wherein the mounting slot 2 and the first slot 3 are connected by a through hole 21, and when the light shield 201 of the probe 200 is inserted into the mounting slot 2, it is convenient to detect the optical parameters of the display 501. When the width of the display 501 of the product 500 is less than 7mm, by inserting the light shield 201 into the mounting slot 2 of the positioning jig 100, light leakage can be avoided to affect the detection accuracy of the product 500. By adding the second slot 4 and the first slot 3, multiple products 500 can be inserted into the positioning jig 100 along the second direction for detection without lifting the probe 200, thereby improving the detection efficiency and facilitating the batch detection of the product 500.

[0047] Furthermore, if Figure 4 As shown, the mounting groove 2 is a tapered groove, and the mounting groove 2 is coaxially arranged with the through hole 21. Since the light shield 201 of the probe 200 is tapered, by making the mounting groove 2 a tapered groove, it is convenient to make the inner cavity of the mounting groove 2 fit with the light shield 201. Moreover, as the light shield 201 is inserted, the opening of the light shield 201 of the probe 200 and the through hole 21 are self-centered under the guidance of the mounting groove 2.

[0048] Furthermore, the first slot 3 is a rectangular slot, and a avoidance slot 31 is provided at the right angle of the first slot 3, and the avoidance slot 31 is connected to the first slot 3. Since the display 501 of the product 500 is a rectangular structure, the avoidance slot 31 is added to avoid the right angle of the display 501 from colliding with the side wall of the first slot 3. Optionally, the first slot 3 and the avoidance slot 31 are machined on the fixture body 1 by a rotary milling cutter.

[0049] Furthermore, the slot width of the second slot 4 gradually decreases in the direction approaching the first slot 3. The second slot 4 is similar to a V-shaped structure, which is convenient for a person to take the product 500.

[0050] Furthermore, the bottom of the second slot 4 is provided with an avoidance slope 41. By adding the avoidance slope 41, the product 500 can be prevented from colliding with the bottom of the second slot 4 during the process of inserting the product 500.

[0051] Furthermore, the four corners of the fixture body 1 are all provided with rounded corners 14. By adding the rounded corners 14, on the one hand, the stress concentration of the fixture body 1 itself is reduced, and on the other hand, the fixture body 1 is prevented from colliding with surrounding parts, thereby improving safety.

[0052] like Figure 5 and Figure 6 As shown, this embodiment also provides an optical detection system, which includes a probe 200 with a light shield 201, a lifting mechanism 300 and the positioning fixture 100 mentioned above. The probe 200 is arranged at the movable end of the lifting mechanism 300. The probe 200 can move along the first direction and insert the light shield 201 into the installation groove 2 of the positioning fixture 100 to prevent light leakage from the light shield 201. The probe 200 is coaxially arranged with the through hole 21 of the positioning fixture 100, and the probe 200 is used to detect the optical parameters of the product 500. This optical detection system can detect multiple products 500 without repeatedly lifting the probe 200, thereby improving the detection efficiency.

[0053] Furthermore, the optical inspection system also includes a temperature control platform 400, on which the positioning fixture 100 is placed, and an inspection insertion area is formed between the first slot 3 of the positioning fixture 100 and the temperature control platform 400, and the inspection insertion area is used to insert the display 501 of the product 500. Since the display 501 of the product 500 generates heat when working, the display 501 can be kept at a suitable temperature by adding the temperature control platform 400 to avoid failure of the display 501 due to high temperature.

[0054] Exemplarily, the lifting mechanism 300 includes a column 301, a rack, and a gear with a handle 302. The rack is slidably arranged in the column 301 along a first direction, and the gear is rotatably arranged in the column 301. The rack and the gear are meshed for transmission, and the probe 200 is fixedly connected to the rack. According to actual conditions, the staff screws the handle 302, and the probe 200 is lifted and lowered by using the rack and the gear to cooperate in transmission.

[0055] like Figure 7 As shown, the present embodiment provides an optical detection method, which uses the above-mentioned optical detection system to detect the display 501 of the product 500, including the following steps: S1, placing the back side 12 of the positioning fixture 100 on the temperature control platform 400; S2, lowering the probe 200 along the first direction through the lifting mechanism 300, so that the light shielding cover 201 is inserted into the mounting slot 2 of the positioning fixture 100; S3, inserting the display 501 of the product 500 to be detected into the first slot 3 of the positioning fixture 100 for optical parameter detection, and pulling out the product 500 after the detection is completed; S4, judging whether all products 500 have been detected, if not, repeating the previous step; if so, the lifting mechanism 300 raises the probe 200 along the first direction to separate the light shielding cover 201 from the positioning fixture 100, thereby improving the detection efficiency and detection accuracy of the display 501 of the product 500.

[0056] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A positioning fixture, characterized in that: include: Fixture body (1); A mounting groove (2) is arranged on the front side (11) of the fixture body (1) and extends along a first direction, a through hole (21) is arranged at the bottom of the mounting groove (2), and a light shield (201) of the probe (200) is inserted into the mounting groove (2); A first slot (3) is arranged on the back side (12) of the fixture body (1) and extends along the second direction, wherein the first slot (3) is connected to the mounting slot (2) through the through hole (21); A second slot (4) is arranged on the side (13) of the fixture body (1) and extends along the second direction. The second slot (4) is connected to the first slot (3), and the display (501) of the product (500) can pass through the second slot (4) and be inserted into the first slot (3).

2. The positioning fixture according to claim 1, characterized in that: The mounting groove (2) is a tapered groove, and the mounting groove (2) and the through hole (21) are arranged coaxially.

3. The positioning fixture according to claim 1, characterized in that: The first slot (3) is a rectangular slot, and a avoidance slot (31) is provided at a right angle of the first slot (3), and the avoidance slot (31) is connected to the first slot (3).

4. The positioning fixture according to claim 1, characterized in that: The slot width of the second slot (4) gradually decreases in a direction approaching the first slot (3).

5. The positioning fixture according to claim 1, characterized in that: The bottom of the second slot (4) is provided with an avoidance slope (41).

6. The positioning fixture according to claim 1, characterized in that: The four corners of the jig body (1) are all provided with rounded corners (14).

7. An optical detection system, characterized in that: The invention comprises a probe (200) with a light shield (201), a lifting mechanism (300) and a positioning fixture as claimed in any one of claims 1 to 6, wherein the probe (200) is arranged at the movable end of the lifting mechanism (300), the probe (200) can move along a first direction and allow the light shield (201) to be inserted into the mounting groove (2) of the positioning fixture, the probe (200) is arranged coaxially with the through hole (21) of the positioning fixture, and the probe (200) is used to detect the optical parameters of the product (500).

8. The optical detection system according to claim 7, characterized in that: The optical inspection system further comprises a temperature control platform (400), the positioning fixture is placed on the temperature control platform (400), a detection insertion area is formed between the first slot (3) of the positioning fixture and the temperature control platform (400), and the display (501) of the product (500) is inserted into the detection insertion area.

9. The optical detection system according to claim 7, characterized in that: The lifting mechanism (300) comprises a column (301), a rack, and a gear with a handle (302); the rack is slidably arranged in the column (301) along the first direction; the gear is rotatably arranged in the column (301); the rack and the gear are meshed for transmission; and the probe (200) is fixedly connected to the rack.

10. An optical detection method, characterized in that: Using the optical inspection system as claimed in any one of claims 7 to 9 to inspect a display (501) of a product (500), comprising the following steps: S1, placing the back side (12) of the positioning fixture on the temperature control platform (400); S2, lowering the probe (200) along a first direction by means of a lifting mechanism (300) so that the light shield (201) is inserted into the mounting groove (2) of the positioning fixture; S3, inserting the display (501) of the product (500) to be tested into the first slot (3) of the positioning fixture to perform optical parameter testing, and pulling out the product (500) after the testing is completed; S4, determining whether all products (500) have been inspected, and if not, repeating the previous step; if so, the lifting mechanism (300) raises the probe (200) along the first direction, so that the light shield (201) is separated from the positioning fixture.

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