A coaxial light source with a protective structure

Abstract

The utility model discloses a coaxial light source with a protective structure, comprising a mounting shell, an LED circuit board, a diffuser plate and a beam splitter arranged coaxially in the mounting shell, a light outlet and an imaging port respectively arranged at the front and rear ends of the mounting shell, an amplification lens arranged on the imaging port, a first obliquely arranged mounting groove arranged inside the mounting shell, two sides of the beam splitter are mounted on the first mounting groove and placed between the light outlet and the imaging port, and a supporting structure for supporting the upper and lower ends of the beam splitter is also arranged inside the mounting shell. The utility model can support both long sides of the beam splitter, thereby preventing the beam splitter from sagging and deforming due to gravity.

Description

Technical Field

[0001] The utility model relates to the technical field of detecting light sources, in particular to a coaxial light source with a protection structure. Background Art

[0002] Coaxial light sources provide more uniform illumination than traditional light sources, thus improving the accuracy and reproducibility of machine vision. When the coaxial light source is long, using conventional design methods, the beam splitter will be deformed more severely under the influence of gravity due to its excessive length, which will cause the lens to break and affect the uniformity of the light source. Therefore, the internal structure of the light source needs to be modified to protect the safety of such long beam splitters. Summary of the invention

[0003] The utility model aims to overcome the above defects in the prior art and provide a coaxial light source with a protective structure, which can support the two long sides of the beam splitter, thereby preventing the beam splitter from sagging and deforming due to gravity.

[0004] To achieve the above-mentioned purpose, the utility model provides a coaxial light source with a protective structure, including a mounting shell, an LED circuit board, a diffuser plate and a beam splitter which are coaxially arranged in the mounting shell, a light outlet and an imaging port being respectively arranged at the front and rear ends of the mounting shell, an amplification lens being arranged on the imaging port, a first oblique mounting groove being arranged inside the mounting shell, two sides of the beam splitter being mounted on the first mounting groove and placed between the light outlet and the imaging port, and a supporting structure for supporting the upper and lower ends of the beam splitter being also arranged inside the mounting shell.

[0005] Furthermore, the supporting structure is a second installation groove which is arranged inside the installation shell and is inclined, the inclination angle of the second installation groove is the same as the inclination angle of the first installation groove, and the positions of the two are matched to realize the installation of the spectroscope.

[0006] Further, the installation housing includes two sets of parallel side panels, a front end panel arranged at the front end of the side panels, and a bottom panel and a window panel arranged at the upper and lower ends of the side panels, the first installation slot is arranged on the side panels, the bottom panel, the two side panels and the front end panel together form a light outlet, and the imaging port is arranged on the window panel. The use of a modular block structure can optimize the overall structure, is more conducive to the convenient assembly of each component, and has strong practicality.

[0007] Furthermore, the second mounting groove is respectively arranged on the front end plate and the window plate. The second mounting groove is directly arranged on the front end plate and the window plate to realize the support and protection of the beam splitter.

[0008] Furthermore, the supporting structure also includes a first fixing bar and a second fixing bar, wherein the first fixing bar and the second fixing bar are detachably connected to the front end plate and the window plate respectively, and the second mounting groove is arranged on the first fixing bar and the second fixing bar.

[0009] Furthermore, the first fixing bar and the second fixing bar are in a T-shaped structure as a whole, and T-shaped grooves matching the shapes of the first fixing bar and the second fixing bar are respectively provided on the bottom plate and the window plate, and the first fixing bar and the second fixing bar are respectively plugged into the T-shaped grooves of the bottom plate and the window plate. The T-shaped grooves can make the first fixing bar and the second fixing bar more stable after installation, and the installation is convenient and quick.

[0010] Furthermore, the first mounting groove and the second mounting groove are both inclined at an angle of 45°. By setting the first mounting groove and the second mounting groove at 45°, the beam splitter can be set at an angle of 45° between the light outlet and the window plate, which can better reflect the light generated by the LED circuit board to the light outlet, thereby providing sufficient light source to illuminate the object to be tested.

[0011] Furthermore, a heat sink is provided on the other side of the LED circuit board relative to the diffuser, and a plurality of evenly arranged heat sink fins are provided on the heat sink. The heat sink can dissipate heat from the LED circuit board to ensure the normal operation of the LED circuit board, and the heat sink fins can increase the heat dissipation effect of the heat sink.

[0012] Furthermore, the inner side surfaces of the two side panels, the bottom panel and the window panel are all provided with a third mounting groove for mounting the diffuser panel, and the inner side surfaces of the two side panels, the bottom panel and the window panel are all provided with a first mounting through hole for fixing the heat sink, and the first mounting through hole is arranged below the third mounting groove. The diffuser panel is clamped by the third mounting groove, and the installation is more convenient. By fixing the heat sink through the installation, the LED mainboard mounted on the heat sink is more stable, ensuring that the light can be emitted smoothly and avoiding the influence of shaking.

[0013] Furthermore, a wire outlet seat is embedded on the heat sink, the wire outlet seat is connected to a wire harness seat, the LED circuit board is connected to a power line, and the power line passes through the wire outlet seat and the wire harness seat to connect to an external power source in sequence, so that the wires can be effectively arranged to make the overall structure neater and more reasonable.

[0014] Compared with the prior art, the utility model has the following advantages: the utility model provides a supporting structure inside the mounting shell, supports the two long sides of the beam splitter through the supporting structure, and then clamps the two ends of the beam splitter with the first mounting groove, which not only provides better support for the fixation of the beam splitter, but also effectively prevents the beam splitter from sagging or deforming due to its own gravity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a structural schematic diagram of a coaxial light source with a protective structure of the utility model;

[0017] Figure 2 yes Figure 1 A structural diagram from another perspective;

[0018] Figure 3 yes Figure 1 AA cross-sectional diagram of ;

[0019] Figure 4 yes Figure 2 Explosion diagram of

[0020] Figure 5 It is a structural schematic diagram of the side plate of the utility model;

[0021] Figure 6 yes Figure 4 An enlarged schematic diagram of region B;

[0022] Figure 7 yes Figure 3 The schematic diagram of the beam splitter is hidden;

[0023] Figure 8 It is a schematic cross-sectional structure diagram of Example 2 of the present utility model.

[0024] Included in the figure are:

[0025] 1. Mounting shell; 11. Imaging port; 12. Light outlet; 13. Side panel; 131. Second mounting hole; 132. Fourth mounting slot; 133. Third mounting hole; 134. First mounting slot; 14. Front end panel; 15. Bottom panel; 16. Window panel; 161. T-slot; 162. Third mounting slot; 163. First mounting hole; 2. LED circuit board; 21. Heat sink; 211. Heat sink fin; 22. Wire outlet seat; 23. Wire harness seat; 24. Power cord; 3. Diffuser; 4. Beam splitter; 5. Support structure; 51. First fixing bar; 52. Second fixing bar; 521. Second mounting slot; 6. Enlarged lens. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in this embodiment of the utility model to clearly and completely describe the technical solution in this embodiment of the utility model. Obviously, the described embodiment is one embodiment of the utility model, not all embodiments of the utility model. Based on this embodiment of the utility model, all other embodiments of the utility model obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as described in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features.

[0029] See also Figures 1 to 5 , an embodiment of the utility model provides a coaxial light source with a protective structure. Example

[0030] like Figures 1 to 4 As shown, it includes a mounting housing 1, an LED circuit board 2, a diffuser plate 3 and a beam splitter 4 arranged in the mounting housing 1 and coaxially arranged, and an imaging port 11 and a light outlet 12 are respectively arranged at the upper and lower ends of the mounting housing 1. Specifically, the mounting housing 1 includes two sets of side panels 13 arranged in parallel, a front end panel 14 arranged at the front end of the side panel 13, and a bottom panel 15 and a window panel 16 arranged at the upper and lower ends of the side panel 13, as shown in FIG. Figure 5As shown, a second mounting through hole 131 is provided at the front end of the side panel 13, and the front end panel 14 is fixed to the front end of the side panel 13 by means of fixing parts such as screws and the like in cooperation with the second mounting through hole 131. A concave fourth mounting groove 132 is provided at the lower end of the side panel 13, and the bottom panel 15 is also installed in the fourth mounting groove 132 by means of fixing parts such as screws and the like. In particular, the height of the bottom panel 15 of this embodiment is smaller than that of the side panel 13. After the bottom panel 15 is installed, the bottom panel 15, the two side panels 13 and the front end panel 14 are combined to form a light outlet 12 for detecting the product to be detected. Of course, the bottom panel 13 can also be used as the light outlet 12 in the application. 5 covers the lower end of the entire mounting housing 1, and the light outlet 12 is arranged on the bottom plate 15, which mainly depends on the size of the product to be tested and is not limited one by one; the upper end of the side plate 13 is provided with a third mounting hole 133, and the window plate 16 is installed above the two side plates 13 by means of fixing parts such as screws and the third mounting hole 133. The window plate 16 is provided with an imaging port 11 that cooperates with the visual camera. In order to enhance the transmittance of light and the dust-proof effect on the inside of the mounting housing 1, an enhancement lens 6 is arranged on the imaging port 11. In particular, the surface of the enhancement lens 6 can be plated with an anti-reflection film to improve the matching accuracy with the visual camera.

[0031] like Figure 3 and Figure 4 As shown, first mounting grooves 134 inclined at 45° are provided on the inner sides of the two side plates 13, and two opposite short sides of the beam splitter 4 are installed on the first mounting grooves 134, so that the beam splitter 4 is placed between the light outlet 12 and the imaging port 11. A supporting structure 5 for supporting the upper and lower ends of the beam splitter 4 is also provided inside the mounting shell 1. In the present embodiment, the supporting structure 5 includes a first fixing bar 51 and a second fixing bar 52, and a second mounting groove 521 inclined at 45° is provided on the first fixing bar 51 and the second fixing bar 52. The inclination angle of the second mounting groove 521 is the same as the inclination angle of the first mounting groove 134, and the positions of the two are matched to realize the installation of the beam splitter 4. Specifically, the two opposite long sides of the beam splitter 4 are inserted into the second mounting grooves 521. The second mounting groove 521 has a sufficient depth to support the beam splitter 4, and the depth can be between 1 / 40 and 1 / 30 of the total length of the beam splitter 4.

[0032] The first fixing bar 51 and the second fixing bar 52 are installed inside the installation housing 1. Specifically, Figure 6As shown, the first fixing bar 51 and the second fixing bar 52 are in a T-shaped structure as a whole. T-shaped grooves 161 matching the shapes of the first fixing bar 51 and the second fixing bar are respectively provided on the bottom plate 15 and the window plate 16. The first fixing bar 51 and the second fixing bar 52 are respectively plugged into the T-shaped grooves 161 of the bottom plate 15 and the window plate 16. The first fixing bar 51 and the second fixing bar 52 can be detachably installed to improve the convenience of installation. It should be noted that after the first fixing bar 51 and the second fixing bar 52 are installed in the T-shaped grooves 161, as shown in FIG. Figure 7 As shown, the two ends of the second mounting groove 521 and the first mounting groove 134 can just overlap, so as to ensure that the beam splitter 4 can be installed at an inclined angle of 45° between the light outlet 12 and the imaging port 11 to ensure the optimal setting angle of the beam splitter 4.

[0033] As shown in the figure, a heat sink 21 is provided on the other side of the LED circuit board 2 relative to the diffuser plate 3. The heat sink 21 is provided with a plurality of evenly arranged heat sink fins 211. A wire outlet seat 22 is embedded on the heat sink 21. The wire outlet seat 22 is connected to a wire harness seat 23. The LED circuit board 2 is connected to a power line 24. The power line 24 passes through the wire outlet seat 22 and the wire harness seat 23 in sequence to connect to an external power source. The heat sink 21 can dissipate heat from the LED circuit board 2 to ensure the normal operation of the LED circuit board 2. The heat sink 21 can increase the heat dissipation effect of the heat sink 21.

[0034] like Figure 3 As shown, the LED circuit board 2, the diffuser plate 3 and the beam splitter 4 of this embodiment are sequentially arranged in the mounting housing 1. Specifically, the inner side surfaces of the two side panels 13, the bottom plate 15 and the window plate 16 are all provided with a third mounting groove 162 for mounting the diffuser plate 3. The diffuser plate 3 is directly plugged into the third mounting groove 162. The inner side surfaces of the two side panels 13, the bottom plate 15 and the window plate 16 are all provided with a first mounting through hole 163 for fixing the heat sink 21. The first mounting through hole 163 is arranged below the third mounting groove 162. The heat sink 21 is fixed with the first mounting through hole 163 by fixing parts such as screws. The third mounting groove 162 is used to realize the clamping of the diffuser plate 3, and the installation is more convenient. By fixing the heat sink 21 through the installation, the LED main board installed on the heat sink 21 is more stable, ensuring that the light can be emitted steadily and avoiding the influence of shaking.

[0035] During assembly of the present invention, it is only necessary to insert the first fixing strip 51 and the second fixing strip 52 of the beam splitter 4 into the T-shaped slots 161 of the front end plate 14 and the window plate 16 from any side of the two side plates 13. The remaining installation steps are the same as those of a conventional coaxial light source. Finally, the first fixing strip 51 and the second fixing strip 52 of the beam splitter 4 will be limited by the left and right side plates 13. The assembly is convenient without changing the original assembly sequence. The two opposite long sides of the beam splitter 4 can be supported to avoid the deformation of the beam splitter 4 due to its own gravity, thereby improving the overall practicality. Example

[0036] The difference between this embodiment and embodiment 1 is that Figure 8 As described above, in this embodiment, the first fixing bar 51 and the second fixing bar 52 are no longer additionally provided, but the second mounting groove 521 is directly provided on the lower side of the front end plate 14 and the middle position of the window plate 16. Of course, the depth of the second mounting groove 521 also needs to be provided with a sufficient depth so that the second mounting groove 521 can support and protect the beam splitter 4. The specific depth is the same as that of Example 1 and will not be repeated here. Similarly, the other aspects are the same as those of Example 1, and the effect of Example 1 is also achieved.

[0037] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A coaxial light source with a protective structure, comprising a mounting housing (1), characterized in that: The invention also comprises: an LED circuit board (2), a diffuser plate (3) and a beam splitter (4) which are arranged coaxially in a mounting shell (1); an imaging port (11) and a light outlet (12) are respectively arranged at the upper and lower ends of the mounting shell (1); an amplification lens (6) is arranged on the imaging port (11); a first obliquely arranged mounting groove (134) is arranged inside the mounting shell (1); two sides of the beam splitter (4) are mounted on the first mounting groove (134) and are arranged between the light outlet (12) and the imaging port (11); and a supporting structure (5) for supporting the upper and lower ends of the beam splitter (4) is also arranged inside the mounting shell (1).

2. The coaxial light source with a protective structure according to claim 1, characterized in that: The supporting structure (5) is a second installation groove (521) arranged inside the installation shell (1) and arranged obliquely, the inclination angle of the second installation groove (521) is the same as the inclination angle of the first installation groove (134), and the positions of the two are matched to realize the installation of the spectroscope (4).

3. The coaxial light source with a protective structure according to claim 2, characterized in that: The mounting shell (1) comprises two sets of side panels (13) arranged in parallel, a front end panel (14) arranged at the front end of the side panels (13), and a bottom panel (15) and a window panel (16) arranged at the upper and lower ends of the side panels (13); the first mounting groove (134) is arranged on the side panels (13); the bottom panel (15), the two side panels (13) and the front end panel (14) together form a light outlet (12); the light outlet (12) and the imaging port (11) are arranged on the window panel (16).

4. The coaxial light source with a protective structure according to claim 3, characterized in that: The second mounting groove (521) is respectively arranged on the front end plate (14) and the window plate (16).

5. The coaxial light source with a protective structure according to claim 3, characterized in that: The supporting structure (5) further comprises a first fixing bar (51) and a second fixing bar (52), wherein the first fixing bar (51) and the second fixing bar (52) are detachably connected to the front end plate (14) and the window plate (16) respectively, and the second mounting groove (521) is arranged on the first fixing bar (51) and the second fixing bar (52).

6. The coaxial light source with a protective structure according to claim 5, characterized in that: The first fixing strip (51) and the second fixing strip (52) are in a T-shaped structure as a whole, and T-shaped grooves (161) matching the shapes of the first fixing strip (51) and the second fixing strip are respectively provided on the bottom plate (15) and the window plate (16), and the first fixing strip (51) and the second fixing strip are respectively plugged into the T-shaped grooves (161) of the bottom plate (15) and the window plate (16).

7. The coaxial light source with a protective structure according to claim 1, characterized in that: The inclination angles of the first mounting groove (134) and the second mounting groove (521) are both 45°.

8. The coaxial light source with a protective structure according to claim 3, characterized in that: A heat sink (21) is provided on the other side of the LED circuit board (2) relative to the diffuser plate (3), and a plurality of groups of evenly arranged heat sink fins (211) are provided on the heat sink (21).

9. The coaxial light source with a protective structure according to claim 8, characterized in that: The inner side surfaces of the two side plates (13), the bottom plate (15) and the window plate (16) are all provided with a third mounting groove (162) for mounting the diffuser plate (3); the inner side surfaces of the two side plates (13), the bottom plate (15) and the window plate (16) are all provided with a first mounting through hole (163) for fixing the heat sink (21); the first mounting through hole (163) is arranged below the third mounting groove (162).

10. The coaxial light source with a protective structure according to claim 9, characterized in that: A wire outlet seat (22) is embedded in the heat sink (21), the wire outlet seat (22) is connected to a wire harness seat (23), the LED circuit board (2) is connected to a power line (24), and the power line (24) passes through the wire outlet seat (22) and the wire harness seat (23) in sequence to connect to an external power source.

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