Lens shade detection device

Abstract

The invention relates to the field of television lens detection, in particular to a lens shade detection device, which comprises a plurality of shade pieces, and the plurality of shade pieces are connected in sequence and are distributed in a straight line; the shade piece comprises a shade bottom plate and an opening and closing cover plate, a shade cavity is formed between the opening and closing cover plate and the shade bottom plate, the shade cavity is used for containing the lens, the opening and closing cover plate is movably installed on the shade bottom plate, and the opening and closing cover plate is used for opening and closing the shade cavity. The method and the device have the effect of reducing the loss of the shade block in the lens shade process.

Description

Technical Field

[0001] This application relates to the field of television lens detection, and in particular to a lens mask detection device. Background Art

[0002] The picture of a liquid crystal television needs to be illuminated by a backlight for display. Specifically, for an LED television, its backlight is mainly an LED light strip. In order to make the light of the backlight, that is, the LED light strip, evenly irradiate the liquid crystal panel, several lenses are often arranged on the LED light strip to improve the lighting effect of the LED light strip. In the existing related technologies, in order to ensure the product quality of LED televisions, it is often necessary to conduct spot checks on the lenses of LED televisions. During the spot check, first, the inspection personnel will place several mask blocks on each lens respectively, so as to mask each lens and prevent the light of the bulbs of the LED light strip from leaking out. Subsequently, the inspection personnel will remove the mask blocks in turn, so that the bulbs of the LED light strip will light up in turn and irradiate the diffuser plate at the top in turn. The inspection personnel observe the lighting effect of the diffuser plate with the naked eye to quickly judge whether there are defects such as scratches, cracks, dirt, optical axis deviation, and deformation on the lens. For lenses that may have defects, the inspection personnel will record the lens, and then other inspection personnel will conduct precise inspection on it through inspection equipment, so as to balance the high efficiency and high quality of the inspection.

[0003] Regarding the above related technologies, the mask blocks used by the inspection personnel in the inspection process are small and scattered, making it easy for the mask blocks to be lost or damaged. Summary of the Invention

[0004] In order to reduce the loss of mask blocks during the lens masking process, this application provides a lens mask detection device.

[0005] A lens mask detection device provided by this application adopts the following technical solutions: A lens mask detection device includes a plurality of mask members, the plurality of mask members are connected in sequence, and the plurality of mask members are linearly distributed; The mask member includes a mask bottom plate and an opening / closing cover plate. A mask chamber is formed between the opening / closing cover plate and the mask bottom plate. The mask chamber is used to accommodate the lens. The opening / closing cover plate is movably installed on the mask bottom plate, and the opening / closing cover plate is used to open and close the mask chamber.

[0006] By adopting the above technical solutions, the plurality of mask members are connected in sequence, making the lens mask detection device larger in volume and no longer scattered, so that the mask members are not easily lost. At the same time, when detecting the lens, by opening and closing the mask chamber with the opening / closing cover plate, the bulbs and lenses in each mask chamber can be lit, so as to facilitate the inspection personnel to observe whether there are defects on the lens through the diffuser plate.

[0007] Optionally, the mask chamber extends along a distribution direction of the mask elements.

[0008] By adopting the above technical solution, it is convenient to cover the LED light strip with different bulb spacings, so that all bulbs in a row can be accommodated in the mask cavity, thereby improving the applicability of the mask.

[0009] Optionally, the opening and closing cover includes a plurality of sliding sub-plates, the plurality of sliding sub-plates are distributed along the distribution direction of the mask parts, and the plurality of sliding sub-plates are all slidably matched with the mask bottom plate along the distribution direction of the mask parts; When an individual sliding sub-plate slides to open the mask chamber, the individual sliding sub-plate drives the other sliding sub-plates to slide and be stored to the inner side, outer side or inner side of the adjacent sliding sub-plate.

[0010] By adopting the above technical solution, the sliding sub-plates can be slid and stored inside, outside, or inside adjacent sliding sub-plates, reducing the volume occupied by the opening and closing cover, thereby reducing the situation where the opening and closing cover affects the opening and closing of adjacent mask chambers. For example, it can reduce the situation where the opening and closing cover overhangs excessively after the mask chamber is opened, causing the opening and closing cover to overlap other adjacent opening and closing covers and making it more difficult to open and close.

[0011] Optionally, the plurality of sliding sub-plates are all arranged in a "冂" shape, and the bottoms of the sliding sub-plates are slidably fitted on the shield bottom plate.

[0012] By adopting the above technical solution, the sliding sub-plate arranged in a "冂" shape will be completely exposed from the mask cavity after being stored, thereby reducing the situation where the sliding sub-plate blocks light.

[0013] Optionally, when the opening and closing cover seals the lens inside the mask chamber, the end of the opening and closing cover close to the lens has a lower height than the end far from the lens; Furthermore, when an individual sliding sub-plate slides to open the mask chamber, the individual sliding sub-plate drives the other sliding sub-plates to slide and be stored inside the adjacent sliding sub-plates.

[0014] By adopting the above technical solution, the lower height of the opening and closing cover is less likely to obstruct light, which helps reduce the impact of the opening and closing cover on the inspection results. For example, the opening and closing cover can reduce the degree of obstruction, resulting in lower brightness in the bright area of the diffuser, which can lead to the inspector misjudging the lens's low light transmittance.

[0015] Optionally, a light absorbing layer is provided on the inner side of the sliding sub-plate.

[0016] By adopting the above technical solution, when the opening and closing cover plate closes the mask chamber, the light absorption layer absorbs the light passing through the lens, reducing the light intensity inside the mask bottom plate, thereby reducing the interference of the light leaking from the self-sliding groove and ensuring the detection accuracy of adjacent lenses.

[0017] When the opening and closing cover plate opens the mask chamber, as the sliding sub-plate is retracted, the light absorption layer is shielded by the adjacent sliding sub-plate, thereby reducing the area of the light absorption layer directly facing the inside of the mask chamber and weakening the light absorption effect of the light absorption layer, thus ensuring the detection accuracy of the corresponding lens.

[0018] Optionally, some of the sliding sub-plates are provided with a light absorption layer, and when an individual sliding sub-plate drives the remaining sliding sub-plates to slide and retract to the inside of the adjacent sliding sub-plate, the light absorption layer is blocked by the remaining sliding sub-plates without a light absorption layer.

[0019] By adopting the above technical solution, when the opening and closing cover plate closes the mask chamber, the light absorption layer unfolds, thereby absorbing light and reducing the light intensity inside the mask chamber.

[0020] When the opening and closing cover plate opens the mask chamber, the light absorption layer is folded and blocked, thereby reducing the light absorbed by the light absorption layer, ensuring the accuracy of the light intensity of the bright area irradiated on the diffuser plate, and reducing the occurrence of misjudgment caused by the light intensity being lower than the designed intensity during visual inspection.

[0021] Optionally, a marking member is movably installed on the mask bottom plate, the marking member has a first state and a second state, and the marking member switches between the first state and the second state by means of an active adjustment.

[0022] By adopting the above technical solution, it is convenient for the inspection personnel to actively adjust and change the state of the marking member according to the inspection situation, and then it is convenient for the inspection personnel to quickly record the inspection situation during mass inspection. For example, for the lenses with qualified inspection results, the marking member is adjusted to the first state, while for the lenses that may have defects in the inspection, the marking member is adjusted to the second state.

[0023] Optionally, the mask bottom plate is provided with a pointing mark, and the pointing mark faces the distribution direction of each mask member.

[0024] By adopting the above technical solution, it is convenient for the inspection personnel to distinguish the starting end, the ending end and the inspection order of several mask members after transferring the inspection device from the LED light strip. For example, for an LED light strip with inspection results of "good product - defective product - defective product" in sequence, if there is no pointing mark, it is easy for the inspection personnel to reverse the order and think that the inspection result is "defective product - defective product - good product", thus causing misjudgment.

[0025] Optionally, two adjacent mask members are connected by magnets.

[0026] By adopting the above technical solutions, it is convenient for the inspectors to adjust the number of the mask members according to the length of the LED light strip, so that when the LED light strip is long, a long detection device can be used for detection and recording, and when the LED light strip is short, a short detection device can be used for convenient detection.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: 1. A plurality of mask members are connected in sequence, so that the volume of the lens mask detection device is large and no longer scattered, and thus the mask members are not easily lost. At the same time, when detecting the lens, by opening and closing the cover plate to open and close the mask chamber, the bulbs and lenses located in each mask chamber can be lit, so that it is convenient for the inspectors to observe through the diffuser plate whether there are defects in the detected lens; 2. It is convenient to cover the mask members on the LED light strips with different bulb spacings, so that all the bulbs in a row can be accommodated in the mask chamber, thereby improving the applicability of the mask members; 3. When the cover plate is opened and closed to close the mask chamber, the light-absorbing layer absorbs the light passing through the lens, so that the light intensity in the mask bottom plate decreases, thereby reducing the interference of the light leaking from the self-sliding groove and ensuring the detection accuracy of adjacent lenses; When the cover plate is opened and closed to open the mask chamber, as the sliding sub-plate is retracted, the light-absorbing layer is shielded by the adjacent sliding sub-plate, and thus the area of the light-absorbing layer directly facing the inside of the mask chamber is reduced, weakening the light-absorbing effect of the light-absorbing layer, thereby ensuring the detection accuracy of the corresponding lens. Description of the Drawings

[0028] Figure 1 is an overall schematic diagram of the lens mask detection device according to Embodiment 1 of the present application.

[0029] Figure 2 is a schematic diagram of the cooperation between the mask bottom plate and the opening and closing cover plate according to Embodiment 1 of the present application.

[0030] Figure 3 is an overall schematic diagram of the mask chamber according to Embodiment 1 of the present application.

[0031] Figure 4 is a schematic diagram of the closed state of the mask chamber according to Embodiment 1 of the present application.

[0032] Figure 5 is a schematic diagram of the open state of the mask chamber according to Embodiment 1 of the present application.

[0033] Figure 6 is an overall schematic diagram of the lens mask detection device according to Embodiment 2 of the present application.

[0034] Figure 7 is a schematic diagram of the pulled-out state of the marking member according to Embodiment 2 of the present application.

[0035] Description of reference numerals: 1. Magnet; 2. Mask bottom plate; 201. Bottom plate chute; 21. Anti-slip pad; 22. Pointing mark; 23. Marking piece; 3. Opening and closing cover plate; 301. Mask chamber; 31. Sliding sub-plate; 311. Sliding protrusion; 312. Sliding groove. Detailed implementation mode

[0036] The following further elaborates on this application in conjunction with the attached Figure 1-7 drawings.

[0037] Embodiment 1: Embodiment 1 of this application discloses a lens mask detection device. Refer to Figure 1 , the lens mask detection device is in the shape of a straight ruler and includes a plurality of mask members. The plurality of mask members are sequentially connected along a straight line direction by magnets 1, so that the detection personnel can adjust the length of the lens mask detection device according to needs. Specifically, one mask member is provided with two magnets 1, the two magnets 1 are respectively located at both ends of the mask member, and one of the magnets 1 protrudes outward, and the other magnet 1 is concave inward, so that after two adjacent mask members are adsorbed and fixed by the magnets 1, the two magnets 1 with outward protrusion and inward concavity are further used for plugging, thereby improving the connection stability of the mask members.

[0038] The mask member can mask the lens and the lamp beads of the LED light strip and can be opened and closed, so as to control the light emitted by each lamp bead through a plurality of mask members. In addition, when detecting the lens, if the distance between two adjacent lenses is large, mask members that do not participate in the detection can be arranged between the two adjacent lenses, and only some mask members that can mask the lamp beads and the lens are used for detection.

[0039] Specifically, refer to Figure 2 and Figure 3 , the mask member includes a mask bottom plate 2 and an opening and closing cover plate 3. A plurality of anti-slip pads 21 are fixedly installed at the bottom of the mask bottom plate 2. The material of the anti-slip pads 21 can be silica gel or rubber, so that the mask member is not easily displaced due to the disturbance of the detection personnel during the detection process. There are two opening and closing cover plates 3, and the two opening and closing cover plates 3 are distributed along the length direction of the mask bottom plate 2, that is, the distribution direction of a plurality of mask members. The opening and closing cover plate 3 covers the mask bottom plate 2, and a mask chamber 301 is formed between the mask bottom plate 2 and the opening and closing cover plate 3. The mask chamber 301 is used for accommodating the lens, and the opening and closing cover plate 3 can open and close the mask chamber 301. Furthermore, when the mask chamber 301 is closed, the light emitted by the lamp beads is blocked, and when the mask chamber 301 is opened, the light emitted by the lamp beads is released, so that the detection personnel can quickly screen and detect each lens by opening and closing each mask chamber 301.

[0040] Refer to Figure 4The mask chamber 301 extends along the distribution direction of the mask member, that is, the width of the mask chamber 301 is adapted to the outer diameter of the lens, and the length of the mask chamber 301 is greater than the outer diameter of the lens, so that the front end, middle and rear end of the mask chamber 301 can accommodate the lens, thereby facilitating the mask chamber 301 to adapt to lenses with different spacings, especially when the LED light strip is long and there are more lenses in a row.

[0041] Reference Figure 2 The shielding bottom plate 2 is provided with a plurality of bottom plate slide grooves 201, and the plurality of bottom plate slide grooves 201 are divided into two groups. The two groups of bottom plate slide grooves 201 are distributed along the width direction of the shielding bottom plate 2, and the two groups of bottom plate slide grooves 201 are respectively located on both sides of the shielding bottom plate 2. The opening and closing cover plate 3 includes a plurality of sliding sub-plates 31, and the plurality of sliding sub-plates 31 are distributed along the distribution direction of the shielding parts. The sliding sub-plates 31 are arranged in a "冂" shape, and the two sides of the bottom of the sliding sub-plate 31 are respectively slidably matched with one of the bottom plate slide grooves 201 in the two groups of bottom plate slide grooves 201. In addition, the sizes of the plurality of sliding sub-plates 31 of the opening and closing cover plate 3 decrease or increase in sequence along the distribution direction of the sliding sub-plates 31, so as to facilitate the sliding and storage of the sliding sub-plates 31 to the inner side, outer side or inner side of the adjacent sliding sub-plates 31, thereby reducing the space occupied by the sliding sub-plates 31 and reducing the light blocking by the sliding sub-plates 31.

[0042] Specifically, in Example 1 of the present application, the number of sliding sub-plates 31 is set to four. The sizes of the sliding sub-plates 31 decrease sequentially along the distribution direction of the sliding sub-plates 31 and toward the middle of the mask base plate 2, and are sequentially arranged. This ensures that when the opening and closing cover 3 seals the lens within the mask chamber 301, the end of the opening and closing cover 3 closer to the lens is lower than the end farther from the lens. Furthermore, when an individual sliding sub-plate 31 slides to open the mask chamber 301, it drives the remaining sliding sub-plates 31 to slide and retract into the inner side of the adjacent sliding sub-plate 31.

[0043] Reference Figure 4 The sliding sub-plate 31 is provided with a sliding protrusion 311 and a sliding groove 312. The sliding sub-plate 31 is provided on the outer side of the sliding sub-plate, and the sliding groove 312 is provided on the inner side of the sliding sub-plate 31. The sliding protrusion 311 slides along the distribution direction of the mask member to cooperate with the sliding groove 312 of the adjacent sliding sub-plate 31, so that individual sliding sub-plates 31 can drive the other sliding sub-plates 31 to slide.

[0044] Specifically, in Embodiment 1 of the present application, the inspector unfolds or stores the opening and closing cover plate 3 by sliding the sliding sub-plate 31 with the smallest size. In addition, an opening and closing groove is provided at the top of the sliding sub-plate 31 with the smallest size, facilitating the inspector to slide the sliding sub-plate 31. A magnet 1 is fixedly installed at the bottom of the sliding sub-plate 31 with the smallest size, so as to adsorb to the sliding sub-plate 31 of another opening and closing cover plate 3 when the opening and closing cover plate 3 is closed, thereby reducing the occurrence of the situation where light leakage affects the detection of adjacent lenses.

[0045] Referring to Figure 4 , a light-absorbing layer is provided on the inner side of the sliding sub-plate 31. The light-absorbing layer can be formed by coating a light-absorbing material or fixing a light-absorbing film, so as to absorb the light in the masking chamber 301 through the light-absorbing layer, reduce the reflection of light, and thus reduce the light leaking from the gap of the sliding sub-plate 31.

[0046] Referring to Figure 4 and Figure 5 Specifically, in Embodiment 1 of the present application, the light-absorbing layer is coated on the three sliding sub-plates 31 far from the middle of the masking bottom plate 2. That is, except for the sliding sub-plate 31 with the smallest size, the inner sides of the remaining three sliding sub-plates 31 are all coated with a light-absorbing layer, so as to reduce the occurrence of the situation where the light-absorbing layer reduces the light intensity and the situation where the light-absorbing layer interferes with the judgment of the light intensity when the opening and closing cover plate 3 is opened by blocking each light-absorbing layer with the sliding sub-plate with the smallest size.

[0047] The implementation principle of the lens masking detection device in Embodiment 1 of the present application is as follows: A number of masking parts are sequentially connected through the magnet 1, making the volume of the lens masking detection device larger and no longer dispersed, and thus making it difficult for the masking parts to be lost. At the same time, when detecting the lens, by opening and closing the masking chamber 301 through the opening and closing cover plate 3, the bulbs and lenses located in each masking chamber 301 can be lit up, facilitating the inspector to observe whether there are defects in the detection lens through the diffuser plate. Moreover, when opening and closing the masking chamber 301 through the opening and closing cover plate 3, the brightness in the masking chamber 301 can be reduced by the light-absorbing layer when closed, and the light loss in the masking chamber 301 can be reduced when opened, thereby improving the detection accuracy.

[0048] Embodiment 2: Embodiment 2 of the present application discloses a lens masking detection device, which further includes the following technical features in addition to all the technical features of Embodiment 1: Referring to Figure 6 and Figure 7 , the masking bottom plate 2 is provided with a pointing mark 22, the pointing mark 22 is arrow-shaped, and the pointing mark 22 faces the distribution direction of each masking part. In addition, the masking bottom plate 2 is also slidably fitted with a marking part 23, facilitating the inspector to mark the detection results of the lenses corresponding to the masking parts.

[0049] In the second embodiment of the present application, the implementation principle of a lens mask detection device is as follows: By pointing to the marking position 22, it is convenient for the detection personnel to identify the detection sequence of the mask, and it is also convenient for the detection personnel to mark the lens as a good product or a defective product by pulling out or pushing back the marking member 23.

[0050] The above are all preferred embodiments of the present application. Without restricting the protection scope of the present application based on this, therefore: Any equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A lens mask detection device, characterized in that: A plurality of masking members, wherein the masking members are connected in sequence and distributed in a straight line; The mask member comprises a mask base plate (2) and an opening and closing cover plate (3); a mask chamber (301) is formed between the opening and closing cover plate (3) and the mask base plate (2); the mask chamber (301) is used to accommodate the lens; the opening and closing cover plate (3) is movably mounted on the mask base plate (2); and the opening and closing cover plate (3) is used to open and close the mask chamber (301).

2. The lens mask detection device according to claim 1, characterized in that: The mask chamber (301) extends along the distribution direction of the mask elements.

3. The lens mask detection device according to claim 1, wherein: The opening and closing cover plate (3) comprises a plurality of sliding sub-plates (31), the plurality of sliding sub-plates (31) being distributed along the distribution direction of the mask parts, and the plurality of sliding sub-plates (31) being slidably matched with the mask bottom plate (2) along the distribution direction of the mask parts; When an individual sliding sub-plate slides to open the mask chamber, the individual sliding sub-plate drives the other sliding sub-plates to slide and be stored to the inner side, outer side or inner side of the adjacent sliding sub-plate.

4. The lens mask detection device according to claim 3, wherein: The plurality of sliding sub-plates (31) are all arranged in a "冂" shape, and the bottoms of the sliding sub-plates (31) are slidably matched with the shield bottom plate (2).

5. A lens mask detection device according to claim 3 or 4, characterized in that: When the opening and closing cover (3) seals the lens inside the mask chamber (301), the end of the opening and closing cover (3) closer to the lens has a lower height than the end farther from the lens; When an individual sliding sub-plate (31) slides to open the mask chamber (301), the individual sliding sub-plate (31) drives the remaining sliding sub-plates (31) to slide and be stored inside the adjacent sliding sub-plates (31).

6. The lens mask detection device according to claim 5, characterized in that: A light absorbing layer is provided on the inner side of the sliding sub-plate (31).

7. The lens mask detection device according to claim 6, characterized in that: Some of the sliding sub-plates (31) are provided with light absorbing layers, and when individual sliding sub-plates (31) drive the remaining sliding sub-plates (31) to slide and be stored inside the adjacent sliding sub-plates (31), the light absorbing layers are blocked by the remaining sliding sub-plates (31) that are not provided with light absorbing layers.

8. The lens mask detection device according to claim 1, wherein: The shield base plate (2) is movably mounted with a marking member (23), the marking member (23) having a first state and a second state, and the marking member (23) switches between the first state and the second state through movably adjusting.

9. The lens mask detection device according to claim 1, characterized in that: The mask bottom plate (2) is provided with a directional marking portion (22), and the directional marking portion (22) faces the distribution direction of each mask component.

10. A lens mask detection device according to claim 8, characterized in that: Two adjacent shielding members are connected via magnets (1).

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