A multi-point detection backlight optical detection device

Abstract

The utility model provides a kind of backlight optical detection device of multipoint detection, it is related to backlight detection field, including detection table, the detection table is equipped with placing groove, the lower position of the placing groove is equipped with recessed groove, the lower end of the detection table is fixedly connected with combination table.The utility model is translated along the transverse length direction of multipoint adjusting bar by detection instrument assembly on adjusting block, to facilitate the adjustment of pre-detection radius, combined with driving block synchronous driving rack translation, and then drive center shaft drives multipoint adjusting bar rotation, can quickly cover the multiple detection points and different detection angles of backlight, solve the problem of single fixed position of traditional detection;By the clamping piece of one end of multipoint adjusting bar is clamped in the embedded annular groove of recessed groove, and the rolling contact between the abutting wheel in clamping piece and annular groove inner wall, use rolling friction to reduce adjusting resistance, ensure that the detection angle adjustment process of whole is stable without shaking.

Description

Technical Field

[0001] This utility model relates to the field of backlight detection, and in particular to a multi-point detection backlight optical detection device. Background Technology

[0002] As a core component of LCD display devices, the optical performance of the backlight (such as brightness uniformity, color consistency, and luminous stability) directly determines the display effect of the display device. Therefore, optical performance testing is a key link in ensuring product quality during the backlight manufacturing process.

[0003] With the development of display technology, the size and specifications of backlights have become increasingly diversified, ranging from small and medium-sized backlights for mobile phones and tablets to ultra-large backlights for televisions and monitors. This places higher demands on the comprehensiveness of testing equipment. To ensure the quality of backlights, it is necessary to conduct comprehensive testing on multiple areas and from different angles.

[0004] Existing backlight optical inspection devices mostly use fixed-position inspection heads. Their relatively fixed inspection positions make it difficult to cover the entire backlight area, resulting in blind spots and failing to meet the needs of comprehensive inspection. Furthermore, due to the varying sizes of backlights, larger backlights require manual adjustments of the inspection head position, which is cumbersome and inefficient. In addition, some devices with simple adjustment functions can only perform unidirectional position adjustments, making it difficult to evenly distribute the inspection points across the entire backlight. The overall inspection process is cumbersome and fails to meet the requirements of comprehensive, multi-point positioning inspection, thus affecting the accuracy of the inspection data and failing to provide a reliable basis for product quality assessment.

[0005] Therefore, it is necessary to provide a new multi-point detection backlight optical inspection device to solve the above-mentioned technical problems. Summary of the Invention

[0006] To solve the above-mentioned technical problems, this utility model provides a backlight optical inspection device with multi-point detection.

[0007] This utility model provides a multi-point detection backlight optical inspection device, comprising: a detection stage, wherein the detection stage is provided with a placement groove, and an inner recess is provided below the placement groove; a combination stage is fixedly connected to the lower end of the detection stage; and a multi-point detection mechanism, wherein the multi-point detection mechanism includes a multi-point adjustment bar, the multi-point adjustment bar is disposed in the inner recess, both ends of the multi-point adjustment bar are provided with protrusions, an adjustment block is provided between the two protrusions, a detection instrument assembly is mounted and connected on the adjustment block, a lateral control assembly is provided between the adjustment block and the two protrusions, and an angle adjustment assembly is provided between one end of the multi-point adjustment bar and the combination stage.

[0008] Preferably, the lateral control component includes a main rotating shaft, with its two ends rotatably connected to two protrusions respectively. A small motor is mounted on one end of the protrusion, and the output end of the small motor is fixedly connected to the main rotating shaft. The main rotating shaft is a threaded rod, and the adjusting block is provided with a threaded opening. The adjusting block is threadedly connected to the main rotating shaft.

[0009] Preferably, the angle adjustment component includes a central shaft, the upper end of which is fixedly connected to a multi-point adjustment bar, a rotating opening is provided on the lower end wall of the detection platform, the central shaft is rotatably connected to the rotating opening, a cavity is provided inside the combined platform, the lower end of the central shaft is rotatably connected to the center position of the cavity, a gear is fixedly connected to the central shaft, a rack is provided on the rear side of the gear, and the rack meshes with the gear.

[0010] Preferably, a bottom frame is fixedly connected to the inner wall of the cavity, and vertical plates are fixedly connected to both ends of the bottom frame. A horizontal bar is fixedly connected between the two vertical plates, and a driving block is slidably connected to the horizontal bar. The driving block is fixedly connected to the back side wall of the rack, and a secondary rotating shaft is rotatably connected between the two vertical plates. A built-in motor is installed on one end of the vertical plate, and the output end of the built-in motor is fixedly connected to the secondary rotating shaft. The secondary rotating shaft is a threaded rod, and the driving block is provided with a threaded opening. The driving block is threadedly connected to the secondary rotating shaft.

[0011] Preferably, the inner wall of the recessed groove is provided with an embedded annular groove, and the other end of the multi-point adjustment bar is fixedly connected to a locking member, which is locked in the embedded annular groove.

[0012] Preferably, the insert is provided with a mounting groove, a short shaft is rotatably connected in the mounting groove, and a stop wheel is fixedly connected to the short shaft.

[0013] Compared with related technologies, the multi-point detection backlight optical detection device provided by this utility model has the following beneficial effects: 1. This utility model uses a small motor to drive the main shaft to rotate, so that the detector component on the adjustment block can be translated along the horizontal length of the multi-point adjustment strip to facilitate the adjustment of the pre-detection radius. Combined with the built-in motor to drive the secondary shaft to rotate, the drive block synchronously drives the rack to translate, and then drives the central shaft to rotate the multi-point adjustment strip. This can quickly cover multiple detection points and different detection angles of the backlight, solving the problem of the single and fixed detection position in traditional methods. It can not only meet the all-round detection needs of the optical performance of the backlight, but is also suitable for multi-point detection of backlights of different sizes and specifications. 2. This utility model, by engaging one end of the multi-point adjustment bar in the embedded annular groove of the recessed groove, and having the abutment wheel inside the engaging part roll in contact with the inner wall of the annular groove, not only provides guiding and limiting support for the angle rotation of the multi-point adjustment bar, but also reduces adjustment resistance by utilizing rolling friction. Combined with the gear and rack transmission accuracy of the angle adjustment component, it ensures that the overall detection angle adjustment process is stable and without shaking, thereby improving the accuracy of the detection data. Attached Figure Description

[0014] Figure 1 A schematic diagram of a preferred embodiment of this utility model; Figure 2 for Figure 1 An exploded view of a preferred embodiment is shown below; Figure 3 for Figure 1 The diagram shows the structure of the multi-point adjustment bar. Figure 4 for Figure 2 The diagram shows the structure at point A.

[0015] The following are labeled in the diagram: 1. Testing table; 11. Placement slot; 12. Recessed slot; 2. Assembly table; 3. Multi-point adjustment bar; 31. Protrusion; 32. Adjustment block; 33. Testing instrument assembly; 4. Main rotating shaft; 41. Small motor; 42. Central shaft; 43. Gear; 44. Rack; 5. Bottom frame; 51. Vertical plate; 52. Horizontal bar; 53. Drive block; 6. Secondary rotating shaft; 61. Built-in motor; 7. Embedded annular groove; 71. Snap-in part; 8. Short shaft; 81. Abutment wheel. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Please refer to the following: Figures 1 to 4 A multi-point detection backlight optical inspection device includes: a detection stage 1, on which a placement groove 11 is provided, and an inner groove 12 is provided below the placement groove 11; a combination stage 2 is fixedly connected to the lower end of the detection stage 1; a multi-point detection mechanism, including a multi-point adjustment bar 3, which is disposed in the inner groove 12, with protrusions 31 at both ends of the multi-point adjustment bar 3, an adjustment block 32 between the two protrusions 31, an inspection instrument assembly 33 installed and connected on the adjustment block 32, a lateral control assembly between the adjustment block 32 and the two protrusions 31, and an angle adjustment assembly between one end of the multi-point adjustment bar 3 and the combination stage 2.

[0018] In the specific implementation process, such as Figure 1 and Figure 3As shown, the lateral control component includes a main rotating shaft 4, with two ends of the main rotating shaft 4 rotatably connected to two protrusions 31 respectively. A small motor 41 is installed on one end of the protrusion 31, and the output end of the small motor 41 is fixedly connected to the main rotating shaft 4. The main rotating shaft 4 is a threaded rod, and the adjusting block 32 is provided with a threaded opening. The adjusting block 32 is threadedly connected to the main rotating shaft 4.

[0019] It should be noted that: the small motor 41 drives the main rotating shaft 4 to rotate, so that the detector assembly 33 (existing technology) on the adjusting block 32 can be translated along the lateral length direction of the multi-point adjusting bar 3, so as to complete the adjustment of the pre-detection radius; Combined with the subsequent rotation of the multi-point adjustment bar 3, multiple detection points and different detection angles of the backlight can be quickly covered, solving the problem of the single and fixed position of traditional detection. It can not only meet the comprehensive detection needs of the optical performance of the backlight, but also be suitable for multi-point detection of backlights of different sizes and specifications.

[0020] refer to Figure 2 and Figure 4 As shown, the angle adjustment assembly includes a central shaft 42, the upper end of which is fixedly connected to the multi-point adjustment bar 3. A rotating opening is provided on the lower end wall of the detection table 1, and the central shaft 42 is rotatably connected to the rotating opening. The interior of the combination table 2 is provided with a cavity, and the lower end of the central shaft 42 is rotatably connected to the center position of the cavity. A gear 43 is fixedly connected to the central shaft 42, and a rack 44 is provided on the rear side of the gear 43. The rack 44 and the gear 43 mesh with each other.

[0021] It should be noted that: the drive block 53 slides along the crossbar 52, and the drive block 53 drives the rack 44 to translate synchronously. The rack 44 meshes with the gear 43 on the central shaft 42, thereby driving the central shaft 42 to rotate, so that the multi-point adjustment bar 3 rotates around the central shaft 42 as the fulcrum, thereby realizing the precise adjustment of the detection angle of the detector component 33. Combined with the above-mentioned pre-radius adjustment, the comprehensive and stable multi-point detection of the backlight at different positions and angles is finally realized.

[0022] refer to Figure 4 As shown, a bottom frame 5 is fixedly connected to the inner wall of the cavity. Vertical plates 51 are fixedly connected to both ends of the bottom frame 5. A horizontal bar 52 is fixedly connected between the two vertical plates 51. A drive block 53 is slidably connected to the horizontal bar 52. The drive block 53 is fixedly connected to the back side wall of the rack 44. A secondary rotating shaft 6 is rotatably connected between the two vertical plates 51. An internal motor 61 is installed on one end of the vertical plate 51. The output end of the internal motor 61 is fixedly connected to the secondary rotating shaft 6. The secondary rotating shaft 6 is a threaded rod. The drive block 53 is provided with a threaded opening. The drive block 53 is threadedly connected to the secondary rotating shaft 6.

[0023] It should be noted that: when the built-in motor 61 is started, the auxiliary shaft 6 is driven to rotate. The screw transmission can then drive the drive block 53 to slide along the crossbar 52, so that the drive block 53 can synchronously drive the rack 44 to move, thereby further controlling the rotation of the gear 43.

[0024] refer to Figure 3 As shown, the inner wall of the recessed groove 12 is provided with an embedded annular groove 7, and the other end of the multi-point adjustment strip 3 is fixedly connected to a locking member 71, which is locked in the embedded annular groove 7.

[0025] It should be noted that the center of the embedded annular groove 7 coincides with the axis of the central shaft 42, ensuring that when the multi-point adjustment bar 3 rotates with the central shaft 42 as the fulcrum, the locking part 71 always slides smoothly along the annular groove. The gap between the outer diameter of the insert 71 and the inner diameter of the embedded annular groove 7 is controlled within a certain range, which not only allows for rotational margin but also restricts the radial displacement of the multi-point adjustment bar 3, thus preventing wobbling during rotation.

[0026] refer to Figure 1 and Figure 3 As shown, the insert 71 has an installation groove, a short shaft 8 is rotatably connected in the installation groove, and a stop wheel 81 is fixedly connected on the short shaft 8.

[0027] It should be noted that the abutment wheel 81 is made of rubber, and its outer circular surface fits tightly against the inner wall of the embedded annular groove 7. The elasticity of the rubber material can buffer the slight vibration during the rotation process, while increasing the contact friction and avoiding jamming during the sliding process. This ensures that the multi-point adjustment bar 3 rotates smoothly as a whole, and enables precise adjustment of the detection angle of the detector component 33.

[0028] The working principle of the multi-point detection backlight optical inspection device provided by this utility model is as follows: The backlight to be inspected is placed in the placement slot 11 on the inspection stage 1. According to the specifications and size of the backlight and the required target inspection point range, the small motor 41 is started to drive the main rotating shaft 4 to rotate. The screw transmission drives the adjustment block 32 to move laterally along the main rotating shaft 4, so that the inspection instrument component 33 (existing technology) on the adjustment block 32 can be translated along the lateral length direction of the multi-point adjustment bar 3, so as to complete the adjustment of the pre-inspection radius. Subsequently, the angle adjustment component can be combined to further change the inspection angle.

[0029] The built-in motor 61 is then activated to drive the auxiliary shaft 6 to rotate. The drive block 53 slides along the crossbar 52 via threaded transmission. The drive block 53 simultaneously drives the rack 44 to translate. The rack 44 meshes with the gear 43 on the central shaft 42, thereby driving the central shaft 42 to rotate. This causes the multi-point adjustment bar 3 to rotate around the central shaft 42 as a fulcrum. At the same time, the locking piece 71 at one end of the multi-point adjustment bar 3 slides stably in the embedded annular groove 7, causing the abutment wheel 81 in the locking piece 71 to rotate synchronously. This ensures that the multi-point adjustment bar 3 rotates smoothly as a whole, achieving precise adjustment of the detection angle of the detector component 33. Combined with the aforementioned pre-radius adjustment, this ultimately achieves comprehensive and stable multi-point detection of the backlight at different positions and angles.

[0030] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A backlight optical inspection device for multi-point detection, characterized in that, include: The testing platform (1) is provided with a placement groove (11), and a recessed groove (12) is provided below the placement groove (11). The lower end of the testing platform (1) is fixedly connected to a combination platform (2). The multi-point detection mechanism includes a multi-point adjustment bar (3), which is located in an inner groove (12). Both ends of the multi-point adjustment bar (3) are provided with protrusions (31), and an adjustment block (32) is provided between the two protrusions (31). A detection instrument assembly (33) is installed and connected on the adjustment block (32). A horizontal control assembly is provided between the adjustment block (32) and the two protrusions (31). An angle adjustment assembly is provided between one end of the multi-point adjustment bar (3) and the combination table (2).

2. The backlight optical inspection device for multi-point detection according to claim 1, characterized in that, The lateral control component includes a main rotating shaft (4), with its two ends rotatably connected to two protrusions (31). A small motor (41) is mounted on one end of the protrusion (31), and the output end of the small motor (41) is fixedly connected to the main rotating shaft (4). The main rotating shaft (4) is a threaded rod, and the adjusting block (32) is provided with a threaded opening. The adjusting block (32) is threadedly connected to the main rotating shaft (4).

3. The backlight optical inspection device for multi-point detection according to claim 1, characterized in that, The angle adjustment assembly includes a central shaft (42), the upper end of which is fixedly connected to a multi-point adjustment bar (3). A rotating opening is provided on the lower end wall of the detection table (1), and the central shaft (42) is rotatably connected to the rotating opening. A cavity is provided inside the combined table (2), and the lower end of the central shaft (42) is rotatably connected to the center position of the cavity. A gear (43) is fixedly connected on the central shaft (42), and a rack (44) is provided on the rear side of the gear (43). The rack (44) meshes with the gear (43).

4. The backlight optical inspection device for multi-point detection according to claim 3, characterized in that, A bottom frame (5) is fixedly connected to the inner wall of the cavity. Vertical plates (51) are fixedly connected to both ends of the bottom frame (5). A crossbar (52) is fixedly connected between the two vertical plates (51). A drive block (53) is slidably connected to the crossbar (52). The drive block (53) is fixedly connected to the back side wall of the rack (44). A secondary rotating shaft (6) is rotatably connected between the two vertical plates (51). A built-in motor (61) is installed on one end of the vertical plate (51). The output end of the built-in motor (61) is fixedly connected to the secondary rotating shaft (6). The secondary rotating shaft (6) is a threaded rod. A threaded opening is provided on the drive block (53). The drive block (53) is threadedly connected to the secondary rotating shaft (6).

5. The backlight optical inspection device for multi-point detection according to claim 1, characterized in that, The inner wall of the recessed groove (12) is provided with an embedded annular groove (7), and the other end of the multi-point adjustment bar (3) is fixedly connected with a snap-fit ​​part (71), which is snapped into the embedded annular groove (7).

6. The backlight optical inspection device for multi-point detection according to claim 5, characterized in that, The insert (71) is provided with an installation groove, and a short shaft (8) is rotatably connected in the installation groove. A stop wheel (81) is fixedly connected on the short shaft (8).

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