Light transmittance testing apparatus for light guide post assembly

Abstract

This application relates to the field of light transmittance testing technology and provides a light transmittance testing device for light guide column assemblies. The device includes an upper housing and a lower housing. The upper housing is equipped with an adjustable light source, and the lower housing is equipped with a light-emitting surface photometer probe and a sliding mechanism. The sliding mechanism is located between the light source and the probe. A light guide column fixture box is mounted on the sliding mechanism. The fixture box has multiple placement slots inside, each capable of accommodating a single light guide column. The surface of the fixture box has multiple light-inlet holes and corresponding light-outlet holes, with corresponding light-inlet and light-outlet holes communicating through the same placement slot. The sliding mechanism moves the fixture box. This application uses a light guide column fixture box with multiple placement slots capable of accommodating single light guide columns. The fixture box can also serve as a light-shielding environment. By moving the fixture box through the sliding mechanism, the adjustable light source and the light-emitting surface photometer probe are precisely aligned with each light guide column through the light-inlet and light-outlet holes, allowing for individual testing of the light transmittance of each light guide column. The testing process is highly efficient.

Description

Technical Field

[0001] This application belongs to the field of light transmittance testing technology, and in particular relates to a light transmittance testing device for light guide column assemblies. Background Technology

[0002] Electronic products typically include indicator lights, which use light guides to direct light from the internal components onto a visible area of ​​the communication device, thus providing a notification or warning to the user. For electronic products such as switches or servers, there are strict requirements for the brightness of the indicator lights, and consequently, for the light transmittance of the light guides. To achieve better light guiding effects, most current light guide structures consist of multiple light guides connected by a connecting arm to form a single light guide assembly. Existing transmittance testing devices measure the entire light guide assembly as a whole. This method struggles to detect quality issues such as substandard transmittance in individual light guides. Individual light guides must be manually inspected using handheld testing instruments, which is time-consuming, labor-intensive, and inefficient due to its low accuracy. Summary of the Invention

[0003] This application provides a transmittance testing device for light guide post assemblies, which can solve the problem of testing the transmittance of a single light guide post in a light guide post assembly.

[0004] In a first aspect, embodiments of this application provide a transmittance testing device for a light guide post assembly. The light guide post assembly includes at least two light guide posts. The transmittance testing device for the light guide post assembly includes a chassis. The chassis is generally an L-shaped structure formed by the perpendicular intersection of an upper chassis and a lower chassis. An adjustable light source is provided on the front of the upper chassis. A light-emitting surface photometer and a sliding mechanism are provided on the top surface of the lower chassis. The sliding mechanism is located between the adjustable light source and the light-emitting surface photometer. The sliding mechanism is provided with a light guide column fixture box, and the interior of the light guide column fixture box is provided with multiple placement slots that can accommodate a single light guide column. The surface of the light guide post fixture box is provided with a plurality of light inlet holes and light outlet holes corresponding to the light inlet holes one by one, and the corresponding light inlet holes and light outlet holes are connected to the same placement groove; The sliding mechanism is used to move the light guide column fixture box; When the light guide post fixture box moves, the target light inlet hole aligns with the adjustable light source, and the target light outlet hole aligns with the light outlet surface metering probe. The light outlet surface metering probe is used to detect the light output brightness of a single light guide post in the target placement slot. The target light inlet hole is any one of a plurality of light inlets, the target light outlet hole is the light outlet hole corresponding to the target light outlet hole, and the target placement slot is a placement slot through which the target light inlet hole and the target light outlet hole are connected.

[0005] In one embodiment of the first aspect, the sliding mechanism includes a guide rail and a slider, the slider being mounted on the guide rail and movable along the guide rail, and the light guide post fixture box being disposed on the slider; When the light guide columns in the light guide column assembly are arranged side by side, the plurality of placement slots are arranged side by side along the first direction, and the guide rail is parallel to the first direction.

[0006] In one embodiment of the first aspect, adjustable support columns are provided around the top surface of the slider and a support plate is provided at the top of the adjustable support columns, and the light guide column fixture box is placed on the top surface of the support plate. The top surface of the slider is also provided with a light-incoming surface photometer probe, and the light-incoming surface photometer probe penetrates the support plate; When the slider moves, the light-incoming surface photometer probe aligns with the adjustable light source, and the light-incoming surface photometer probe is used to detect the light intensity of the adjustable light source.

[0007] In one embodiment of the first aspect, an adjustable bracket is provided on the top surface of the lower housing of the chassis, and the light-emitting surface photometer probe is fixed on the adjustable bracket.

[0008] In one embodiment of the first aspect, the transmittance testing device for the light guide column assembly further includes a brightness adjustment switch, and the upper housing of the chassis includes a vertical surface and an inclined surface; The vertical surface is located near the lower housing of the chassis, and the inclined surface is located away from the lower housing of the chassis; The adjustable light source is located on the vertical surface of the upper housing of the chassis, and the brightness adjustment switch is located on the inclined surface of the upper housing of the chassis.

[0009] In one embodiment of the first aspect, the transmittance testing device for the light guide column assembly further includes an input light brightness display and an output light brightness display; Both the light intake brightness display and the light output brightness display are mounted on the inclined surface of the upper housing of the chassis.

[0010] In one embodiment of the first aspect, the slider is provided with multiple pairs of wavelet positioning holes corresponding one-to-one with the light-emitting hole, and each side of the guide rail is provided with a limit block, the limit block is provided with a protruding limit wavelet, and the limit wavelet corresponds to the light-emitting surface photometer probe. The limiting wave is used to limit the distance between the slider and the limiting block; When the slider moves, the limiting wavelet engages with each pair of wavelet positioning holes respectively; When the limiting wavelet corresponds to the target wavelet positioning hole, the light-emitting surface photometer is used to detect the light output brightness of a single light guide column in the target placement slot; the target wavelet positioning hole is a wavelet positioning hole corresponding to the target light output hole.

[0011] In one embodiment of the first aspect, the light guide post fixture box includes a fixture base and a fixture cover each having a plurality of recesses. When the fixture base and the fixture cover are aligned and joined together, the plurality of recesses form a cavity that can accommodate the light guide post assembly, and the cavity includes a plurality of placement slots.

[0012] In one embodiment of the first aspect, the fixture cover is provided with a handle.

[0013] In one embodiment of the first aspect, a guide post and a positioning post are provided on the jig base in the area outside the recess; a guide sleeve and a jig positioning hole are provided on the jig cover at positions corresponding to the guide post and the positioning post.

[0014] The beneficial effects of this utility model are: 1. The light guide fixture box has multiple slots inside that can accommodate a single light guide column, allowing for continuous measurement of multiple light guide columns, thus improving testing efficiency. Furthermore, the light guide fixture box can serve as a light-shielding environment, preventing external light from interfering with the test results. Simultaneously, the surface of the light guide fixture box has corresponding light inlet and light outlet holes for each slot. A sliding mechanism moves the light guide fixture box, allowing the adjustable light source and the light-emitting surface photometer probe to precisely align with each light guide column through the light inlet and light outlet holes. This enables separate testing of the transmittance of each light guide column, resulting in accurate test results and an efficient testing process.

[0015] 2. The brightness of the light source is adjustable to meet the testing requirements under different conditions. The distance between the light-emitting surface metering probe and the light guide fixture box, as well as the distance between the light-inlet surface metering probe and the light guide fixture box, are all adjustable, which can adapt to diverse light guide column testing. When it is necessary to test light guide column components of different shapes, simply replace the light guide fixture box with one that matches the shape and size of the cavity.

[0016] 3. By limiting the distance between the light guide column and the light-emitting surface photometer probe through the limiting wavelet, the stability of the transmittance measurement is facilitated and calibration is convenient. The movement of the light guide column fixture box can also be controlled by the corresponding cooperation of the wavelet positioning hole and the limiting wavelet, so that the light-emitting surface photometer probe and the adjustable light source can accurately position each light guide column, further improving the measurement accuracy of the transmittance of a single light guide column. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a transmittance testing device for a light guide post assembly provided in an embodiment of this application; Figure 2 This is a schematic diagram of the fixture base in a transmittance testing device for a light guide post assembly, provided in one embodiment of this application.

[0019] Figure 3 This is a schematic diagram of the fixture cover in a light transmittance testing device for a light guide post assembly, provided in one embodiment of this application.

[0020] Figure 4 This is a partial structural schematic diagram of a transmittance testing device for a light guide post assembly provided in an embodiment of this application.

[0021] Legend: 1. Lower chassis; 2. Upper chassis; 3. Light guide post assembly; 11. Light guide post fixture box; 12. Sliding mechanism; 13. Light emitting surface metering probe; 14. Light receiving surface metering probe; 15. Limiting block; 111. Fixture cover; 112. Fixture base; 113. Light inlet hole; 114. Light outlet hole; 1111. Guide sleeve; 1112. Fixture positioning hole; 1113. Handle; 1121. Guide post; 1122. Positioning post; 121, guide rail; 122, slider; 123, adjustable support post; 124, support plate; 131, adjustable bracket; 151, limiting wave; 1221, wave positioning hole; 21, adjustable light source; 22, brightness adjustment switch; 23, output brightness display; 24, input brightness display; 31, light guide post; 32, connecting frame; 311, light guide post light inlet surface; 312, light guide post light outlet surface. Detailed Implementation

[0022] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0023] It should be understood that, when used in this application specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or a collection thereof.

[0024] It should also be understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0025] Furthermore, in the description of this application and the appended claims, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] This application provides a transmittance testing device for a light guide post assembly. See [link to relevant documentation]. Figure 1 The transmittance testing device for the light guide column assembly includes a chassis, which is an L-shaped structure formed by the perpendicular intersection of an upper chassis 2 and a lower chassis 1. Figure 1 As shown, with the intersecting surfaces in the L-shaped structure as the frontal view facing the user, an adjustable light source 21 is provided on the front of the upper cabinet 2 of the chassis, and a light-emitting surface photometer 13 and a sliding mechanism 12 are provided on the top surface of the lower cabinet 1 of the chassis. The sliding mechanism 12 is located between the adjustable light source 21 and the light-emitting surface photometer 13.

[0027] In this embodiment, a light guide post fixture box 11 is provided on the sliding mechanism 12, and the sliding mechanism 12 is used to drive the light guide post fixture box 11 to move. When the light guide post fixture box 11 moves, the target light inlet hole corresponds to the adjustable light source 21, and the target light outlet hole corresponds to the light outlet surface metering probe 13. The light outlet surface metering probe 13 is used to detect the light output brightness of a single light guide post in the target placement slot.

[0028] Optionally, the light guide post fixture box 11 has multiple placement slots inside that can accommodate a single light guide post. The surface of the light guide post has multiple light inlet holes 113 and corresponding light outlet holes 114. The corresponding light inlet holes 113 and light outlet holes 114 are connected through the same placement slot. The target light inlet hole is any one of the multiple light inlet holes, the target light outlet hole is the light outlet hole corresponding to the target light inlet hole, and the target placement slot is the slot through which the target light inlet hole and the target target light outlet hole are connected.

[0029] In one feasible solution, the light guide jig box 11 is made of black plastic material, which has a good light-blocking effect, and the interior of the light guide jig box 11 can serve as a dark environment.

[0030] In one embodiment, the light guide jig box 11 includes a jig base 112 and a jig cover 111, see [link to relevant documentation]. Figure 2 and Figure 3 Both the fixture base 112 and the fixture cover 111 have several recesses. When the fixture base 112 and the fixture cover 111 are aligned and joined together, these recesses form a cavity that can accommodate the light guide post assembly. The recesses in the cavity that can accommodate the light guide post are called placement slots, and the cavity includes multiple placement slots. It should be noted that the shape, size, and position of each placement slot in the cavity correspond to the shape, size, and position of the light guide post 31 in the light guide post assembly 3. At the same time, after the fixture base 112 and the fixture cover 111 are aligned and joined together, the light inlet hole 113 on the light guide post fixture box 11 corresponds to the light inlet surface 311 of the light guide post, and the light outlet hole 114 corresponds to the light outlet surface 312 of the light guide post.

[0031] In one embodiment, the gap between the fixture base 112 and the fixture cover 111 is less than 0.5 mm.

[0032] As an example, such as Figure 2 As shown, assuming the light guide post assembly 3 includes multiple light guide posts 31 and a connecting frame 32 for connecting the multiple light guide posts 31, all of which are arranged side by side, then multiple placement slots are arranged side by side along a first direction. From the front view of the chassis, the first direction represents the horizontal direction, and the multiple placement slots are arranged along the horizontal direction. In the example, the light guide post 31 has an L-shaped structure, with its light-inlet surface and light-outlet surface located at its two end faces, respectively. The light-inlet holes 113 are arranged horizontally on the top surface of the light guide post fixture box 11, and the light-outlet holes 114 are arranged horizontally on the front surface of the light guide post fixture box 11. Of course, for the light guide post assembly 3 in the example, the cavity also includes a recess that can accommodate the connecting frame 32.

[0033] In one embodiment, based on light guide post assemblies of different shapes, a variety of light guide post fixture boxes 11 with cavities matching the shape and size of the light guide post assemblies are pre-prepared to adapt to the testing of different light guide post assemblies.

[0034] To facilitate accurate alignment and tight fit between the fixture base 112 and the fixture cover 111, guide posts 1121 and positioning posts 1122 are provided on the area outside the recess on the fixture base 112, and guide sleeves 1111 and fixture positioning holes 1112 are provided on the fixture cover 111 at positions corresponding to the guide posts 1121 and positioning posts 1122.

[0035] Specifically, the sliding mechanism 12 includes a guide rail 121 and a slider 122. The slider 122 is mounted on the guide rail 121 and is movable along the guide rail 121. The light guide post fixture box 11 is disposed on the slider 122.

[0036] In one embodiment, the direction of the guide rail 121 is related to the arrangement direction of the placement slots. When multiple placement slots are arranged side by side along the first direction, the guide rail 121 is parallel to the first direction. For example, when multiple placement slots are arranged horizontally, the guide rail 121 is also arranged horizontally.

[0037] In one embodiment, such as Figure 1 As shown, adjustable support columns 123 are provided around the top surface of the slider 122, and a support plate 124 is provided at the top of the adjustable support column 123. The light guide column fixture box 11 is placed on the top surface of the support plate 124. The height of the adjustable support column 123 is adjustable, thereby adjusting the distance between the light inlet hole on the light guide column fixture box 11 and the adjustable light source 21.

[0038] In one embodiment, the top surface of the slider 122 is also provided with a light-incoming surface metering probe 14, and the light-incoming surface metering probe 14 penetrates the support plate 124; when the slider 122 moves, the light-incoming surface metering probe 14 moves with the slider 122, so that the light-incoming surface metering probe 14 corresponds to the adjustable light source 21, and the light-incoming surface metering probe 14 is used to detect the light brightness of the adjustable light source 21.

[0039] In one embodiment, an adjustable bracket 131 is provided on the top surface of the lower housing 1 of the chassis. The light-emitting surface photometer 13 is fixed on the adjustable bracket 131. The adjustable bracket 131 can extend and retract vertically to adjust the height of the light-emitting surface photometer 13 so that the light-emitting surface photometer 13 corresponds to the light-emitting hole 114.

[0040] Optionally, see Figure 4The slider 122 is provided with multiple pairs of wavelet positioning holes 1221 that correspond one-to-one with the light emission holes 114. The wavelet positioning holes 1221 are respectively provided on both sides of the slider 122. The guide rail 121 is also provided with limit blocks 15 on both sides. The limit blocks 15 are provided with protruding limit wavelets 151. The limit wavelets 151 correspond to the light emission surface photometer 13. That is, when the limit wavelet 151 and any pair of wavelet positioning holes 1221 are matched, the light emission surface photometer 13 is exactly aligned with one of the light emission holes 114 on the light guide post fixture box 11.

[0041] Specifically, the limiting wave 155 is used to limit the distance between the slider 122 and the limiting block 15, thereby stabilizing the distance between the light-emitting hole 114 and the light-emitting surface photometer probe 13.

[0042] In one embodiment, the positioning of a single light guide column is achieved by using a limiting wavelet 151 and a wavelet positioning hole 1221. When the slider 122 moves, the limiting wavelet 151 is respectively engaged with each pair of wavelet positioning holes 1221. When the limiting wavelet 151 is engaged with the target wavelet positioning hole, the light-emitting surface photometer 13 is used to detect the light output brightness of a single light guide column in the target placement slot. The target wavelet positioning hole is the wavelet positioning hole corresponding to the target light output hole.

[0043] See Figure 1 The transmittance testing device for the light guide column assembly also includes a brightness adjustment switch 22, an incoming light brightness display 24, and an outgoing light brightness display 23. The brightness adjustment switch 22 is connected to the adjustable light source 21 and is used to adjust the brightness value of the adjustable light source 21. The incoming light brightness display 24 is connected to the incoming light surface metering probe 14 and is used to display the actual brightness value of the adjustable light source 21. The outgoing light brightness display 23 is connected to the outgoing light surface metering probe 13 and is used to display the actual transmittance value of the light guide column.

[0044] like Figure 1 As shown, the upper housing 2 of the chassis includes a vertical surface and an inclined surface. The vertical surface is located near the lower housing 1 of the chassis, and the inclined surface is located away from the lower housing 1 of the chassis. The adjustable light source 21 is set on the vertical surface of the upper housing 2 of the chassis, while the brightness adjustment switch 22, the light input brightness display 24, and the light output brightness display 23 are all set on the inclined surface of the upper housing 2 of the chassis for easy operation and viewing.

[0045] In one embodiment, such as Figure 3 As shown, a handle 1113 is provided on the fixture cover 111 to facilitate taking the fixture cover 111.

[0046] The following is a brief explanation of how to use the transmittance testing device for light guide column assemblies. Based on the light guide column assembly to be tested, select a suitable light guide column fixture and place it on the support plate. Simultaneously, adjust and fix the corresponding limit wavelets, adjustable support columns, and adjustable brackets according to the test requirements (e.g., the distance between the adjustable light source and the light inlet aperture is less than 1.5mm, and the distance between the light-emitting surface metering probe and the light-emitting aperture is less than 1.5mm, etc.). Then, start the device (i.e., turn on the corresponding power switch, etc.), and push the slider on the guide rail to align the adjustable light source with the light-emitting surface metering probe, thereby verifying the light transmittance brightness value. According to the test requirements, adjust the brightness... Adjust the light intake brightness value using the switch. The light intake brightness range of the light guide column is between 700 cd / m² and 800 cd / m², with a 750 cd / m² light source being the best choice. The actual brightness value of the adjustable light source can be viewed through the light intake brightness display. After verifying the brightness value of the adjustable light source, reset the slider, open the fixture cover of the light guide column fixture box, and install the light guide column assembly into the recess of the fixture base, ensuring that each light guide column is accurately placed in its respective slot. Then close the fixture cover and align the fixture cover and fixture base based on the guide column and fixture positioning post, so that the light intake hole is aligned with the light intake surface of the light guide column and the light output hole is aligned with the light output surface of the light guide column.

[0047] Push the slide again to move it on the guide rail. Through the corresponding cooperation of the limit wavelet and the wavelet positioning hole, each light guide column is positioned in sequence. Then, the light transmittance value of each light guide column is tested by the light output surface photometer probe, and the light output brightness value is viewed on the light output brightness display.

[0048] In this embodiment, when the light intake brightness ranges from 700 cd / m² to 800 cd / m², the light output brightness range of the light guide column is typically from 400 cd / m² to 2070 cd / m². When the light output brightness value read from the light output brightness display is within this range, it indicates that the single light guide column has passed the test. At the same time, the transmittance difference between different light guide columns in the same light guide column assembly can also be read.

[0049] Based on the above embodiments, the beneficial effects of this utility model can be obtained as follows: 1. The light guide fixture box has multiple slots inside that can accommodate a single light guide column, allowing for continuous measurement of multiple light guide columns, thus improving testing efficiency. Furthermore, the light guide fixture box can serve as a light-shielding environment, preventing external light from interfering with the test results. Simultaneously, the surface of the light guide fixture box has corresponding light inlet and light outlet holes for each slot. A sliding mechanism moves the light guide fixture box, allowing the adjustable light source and the light-emitting surface photometer probe to precisely align with each light guide column through the light inlet and light outlet holes. This enables separate testing of the transmittance of each light guide column, resulting in accurate test results and an efficient testing process.

[0050] 2. The brightness of the light source is adjustable to meet the testing requirements under different conditions. The distance between the light-emitting surface metering probe and the light guide fixture box, as well as the distance between the light-inlet surface metering probe and the light guide fixture box, are all adjustable, which can adapt to diverse light guide column testing. When it is necessary to test light guide column components of different shapes, simply replace the light guide fixture box with one that matches the shape and size of the cavity.

[0051] 3. By limiting the distance between the light guide column and the light-emitting surface photometer probe through the limiting wavelet, the stability of the transmittance measurement is facilitated and calibration is convenient. The movement of the light guide column fixture box can also be controlled by the corresponding cooperation of the wavelet positioning hole and the limiting wavelet, so that the light-emitting surface photometer probe and the adjustable light source can accurately position each light guide column, further improving the measurement accuracy of the transmittance of a single light guide column.

[0052] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A transmittance testing device for a light guide post assembly, characterized in that, The light guide column assembly includes at least two light guide columns. The transmittance testing device for the light guide column assembly includes a chassis. The chassis is an L-shaped structure formed by the perpendicular intersection of an upper chassis and a lower chassis. An adjustable light source is provided on the front of the upper chassis. A light-emitting surface photometer and a sliding mechanism are provided on the top surface of the lower chassis. The sliding mechanism is located between the adjustable light source and the light-emitting surface photometer. The sliding mechanism is provided with a light guide column fixture box, and the interior of the light guide column fixture box is provided with multiple placement slots that can accommodate a single light guide column. The surface of the light guide post fixture box is provided with a plurality of light inlet holes and light outlet holes corresponding to the light inlet holes one by one, and the corresponding light inlet holes and light outlet holes are connected to the same placement groove; The sliding mechanism is used to move the light guide column fixture box; When the light guide post fixture box moves, the target light inlet hole aligns with the adjustable light source, and the target light outlet hole aligns with the light outlet surface metering probe. The light outlet surface metering probe is used to detect the light output brightness of a single light guide post in the target placement slot. The target light inlet hole is any one of a plurality of light inlets, the target light outlet hole is the light outlet hole corresponding to the target light inlet hole, and the target placement slot is a placement slot through which the target light inlet hole and the target light outlet hole pass.

2. The transmittance testing device for a light guide post assembly as described in claim 1, characterized in that, The sliding mechanism includes a guide rail and a slider. The slider is mounted on the guide rail and is movable along the guide rail. The light guide column fixture box is disposed on the slider. When the light guide columns in the light guide column assembly are arranged side by side, the plurality of placement slots are arranged side by side along the first direction, and the guide rail is parallel to the first direction.

3. The transmittance testing device for a light guide post assembly as described in claim 2, characterized in that, The top surface of the slider is provided with adjustable support columns around all four sides, and the top of the adjustable support columns is provided with a support plate. The light guide column fixture box is placed on the top surface of the support plate. The top surface of the slider is also provided with a light-incoming surface photometer probe, and the light-incoming surface photometer probe penetrates the support plate; When the slider moves, the light-incoming surface photometer probe aligns with the adjustable light source, and the light-incoming surface photometer probe is used to detect the light intensity of the adjustable light source.

4. The transmittance testing device for a light guide post assembly as described in claim 1, characterized in that, An adjustable bracket is provided on the top surface of the lower housing of the chassis, and the light-emitting surface photometer probe is fixed on the adjustable bracket.

5. The transmittance testing device for a light guide post assembly as described in claim 1, characterized in that, The transmittance testing device for the light guide column assembly also includes a brightness adjustment switch, and the upper housing of the chassis includes a vertical surface and an inclined surface; The vertical surface is located near the lower housing of the chassis, and the inclined surface is located away from the lower housing of the chassis; The adjustable light source is located on the vertical surface of the upper housing of the chassis, and the brightness adjustment switch is located on the inclined surface of the upper housing of the chassis.

6. The transmittance testing device for a light guide post assembly as described in claim 5, characterized in that, The transmittance testing device for the light guide column assembly also includes an input light brightness display and an output light brightness display. Both the light intake brightness display and the light output brightness display are mounted on the inclined surface of the upper housing of the chassis.

7. The transmittance testing device for a light guide post assembly as described in claim 2, characterized in that, The slider is provided with multiple pairs of wavelet positioning holes that correspond one-to-one with the light-emitting hole. Limit blocks are also provided on both sides of the guide rail. The limit blocks are provided with protruding limit wavelets, and the limit wavelets correspond to the light-emitting surface photometer probe. The limiting wave is used to limit the distance between the slider and the limiting block; When the slider moves, the limiting wavelet engages with each pair of wavelet positioning holes respectively; When the limiting wavelet corresponds to the target wavelet positioning hole, the light-emitting surface photometer is used to detect the light output brightness of a single light guide column in the target placement slot; the target wavelet positioning hole is a wavelet positioning hole corresponding to the target light output hole.

8. The transmittance testing device for a light guide post assembly as described in claim 1, characterized in that, The light guide post fixture box includes a fixture base and a fixture cover, each having a plurality of recesses. When the fixture base and the fixture cover are aligned and joined together, the plurality of recesses form a cavity that can accommodate the light guide post assembly. The cavity includes a plurality of placement slots.

9. The transmittance testing device for a light guide post assembly as described in claim 8, characterized in that, The fixture cover is provided with a handle.

10. The transmittance testing device for a light guide post assembly as described in claim 8, characterized in that, The fixture base is provided with guide posts and positioning posts in the area outside the recess; the fixture cover is provided with guide sleeves and fixture positioning holes at positions corresponding to the guide posts and positioning posts.

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