Light guide component and optical system

Abstract

The present invention relates to the field of lighting technology, and in particular to a light guide assembly and an optical system, wherein the light guide assembly comprises a light guide rod, a light guide rod mounting member and a fixed base; the light guide rod mounting member is provided with a connecting portion and a light guide rod sleeve at opposite ends thereof, the connecting portion and the light guide rod sleeve have a first through cavity in communication, and the light guide rod can be inserted and fixed in the first through cavity; the fixed base is provided with a second through cavity for inserting the light guide rod sleeve, and when the light guide rod sleeve is inserted into the second through cavity, the connecting portion is placed on a first end face of the fixed base, and the second end face of the fixed base opposite to the first end face is used to connect a light source structure. The present invention utilizes the light guide rod mounting member and the fixed base to achieve a stable connection between the light guide rod and other optical structures, thereby ensuring the stability of light emitted from the light guide rod.

Description

Technical Field

[0001] The present disclosure relates to the field of lighting technology, and in particular to a light guide assembly and an optical system. Background Art

[0002] When the light source is used for microscopic system illumination, a light guide rod is usually required to adjust the light emitted by it. Through multiple reflections, the originally divergent or incident light from different sources can be adjusted to an outgoing light with uniform intensity. For example, the light emitted by LED light sources of multiple bands is combined and uniformed into illumination light that can be used for microscopic systems. However, due to structural limitations, the connection between the light guide rod and the light source or other optical structures is unstable, which in turn affects the emission direction and position of the light. Therefore, it is necessary to provide a light guide component that can be stably connected to ensure the stability of the outgoing light. Summary of the invention

[0003] On the one hand, the present disclosure provides a light guide assembly, including a light guide rod, a light guide rod mounting member and a fixed base; the light guide rod mounting member is provided with a connecting portion and a light guide rod sleeve at opposite ends, respectively, the connecting portion and the light guide rod sleeve have a connected first through cavity, and the light guide rod can be inserted into and fixed in the first through cavity; the fixed base is provided with a second through cavity for inserting the light guide rod sleeve, when the light guide rod sleeve is inserted into the second through cavity, the connecting portion is placed on a first end face of the fixed base, and the second end face of the fixed base opposite to the first end face is used to connect a light source structure.

[0004] In the disclosed embodiment, the light guide rod has a prism and / or pyramid structure.

[0005] In the disclosed embodiment, the connecting portion is provided with a sink for connecting the optical lens, and the port of the first through cavity is arranged in the middle of the sink, so that the central axis of the light guide rod coincides with the central axis of the optical lens.

[0006] In the disclosed embodiment, the major diameter of the connecting portion is greater than the major diameter of the second through cavity. When the light guide rod sleeve is inserted into the second through cavity, the connecting portion is mounted on the first end surface.

[0007] In the disclosed embodiment, one of the first end surface and the connecting portion is provided with a positioning pin, and the other is provided with a positioning groove matching the positioning pin. When the connecting portion is placed on the first end surface, the position of the light guide rod sleeve in the second through cavity can be fixed by matching the positioning pin and the positioning groove.

[0008] In the embodiment of the present disclosure, when the light guide rod is fixed in the first through cavity, the end of the light guide rod is flush with the end surface of the connecting portion, or the end of the light guide rod is slightly lower than the end surface of the connecting portion.

[0009] In the disclosed embodiment, the fin mounting plate is provided with an arc surface connection portion, and the light guide rod sleeve includes a plurality of clamping plates arranged at intervals, and when the light guide rod is fixed in the first through cavity, the clamping plates are in contact with the side surfaces of the light guide rod.

[0010] In the disclosed embodiment, there are gaps between adjacent clamping sheets, and when the light guide rod is fixed in the first through cavity, the axial edges of the light guide rod are exposed in the gaps.

[0011] In the embodiment of the present disclosure, when the light guide rod is fixed in the first through cavity, the edges at the end of the light guide rod do not contact the edges of the first through cavity port.

[0012] In the embodiment of the present disclosure, when the light guide rod is fixed in the first through cavity, the end of the light guide rod exceeds the light guide rod sleeve.

[0013] In the embodiment of the present disclosure, a positioning column is provided on the second end surface of the fixing base, and the positioning column matches the concentric positioning hole on the light source structure.

[0014] In the embodiment of the present disclosure, at least one mounting hole is further provided on the second end surface of the fixing base for arranging a fixing connecting member connected to the light source structure.

[0015] In the disclosed embodiment, at least one installation window is further provided on the side surface of the fixed base along the circumference of the second through cavity.

[0016] In the disclosed embodiment, the light guide assembly further comprises a light guide rod fastener, and the light guide rod can be fixed in the first through cavity by sleeve-mounting the light guide rod fastener on the outside of the light guide rod sleeve.

[0017] Another aspect of the present disclosure provides an optical system, including a light source structure, an optical lens and the above-mentioned light guide assembly.

[0018] The light guide assembly and optical system provided by the present disclosure have the following technical effects:

[0019] The present invention utilizes a light guide rod mounting member and a fixed base to achieve a stable connection between the light guide rod and other optical structures, thereby ensuring the stability of light emitted from the light guide rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions and advantages in the embodiments of the present invention or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 : An exploded view of a light guide assembly provided in an embodiment of the present disclosure;

[0022] Figure 2 : A side view of a light guide assembly provided in an embodiment of the present disclosure;

[0023] Figure 3 : A front view of a light guide rod mounting member of a light guide assembly provided in an embodiment of the present disclosure;

[0024] Figure 4 : A front view of a fixing base of a light guide assembly provided in an embodiment of the present disclosure;

[0025] Figure 5 : A side view of a light guide assembly provided in an embodiment of the present disclosure;

[0026] In the figure: 100-light guide rod, 200-light guide rod mounting part, 210-connecting part, 220-light guide rod sleeve, 230-first through cavity, 240-sunk platform, 250-positioning pin, 260-clamping plate, 270-gap, 280-through cavity sinker, 300-fixed base, 310-second through cavity, 320-first end face, 330-second end face, 340-positioning groove, 350-positioning column, 360-mounting hole, 370-mounting window, 400-light guide rod fastener, 500-light source structure, 600-optical lens. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, device, product or equipment that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0029] The embodiments are described below with reference to the accompanying drawings, which do not limit the disclosure described in the claims in any way.

[0030] Please refer to Figure 1-5 On the one hand, an embodiment of the present disclosure provides a light guide assembly, including a light guide rod 100, a light guide rod mounting member 200 and a fixed base 300; the light guide rod mounting member 200 is provided with a connecting portion 210 and a light guide rod sleeve 220 at opposite ends thereof, the connecting portion 210 and the light guide rod sleeve 220 having a connected first through cavity 230, the light guide rod 100 can be inserted into and fixed in the first through cavity 230; the fixed base 300 is provided with a second through cavity 310 for inserting the light guide rod sleeve 220, when the light guide rod sleeve 220 is inserted into the second through cavity 310, the connecting portion 210 is placed on the first end face 320 of the fixed base 300, and the second end face 330 of the fixed base 300 opposite to the first end face 320 is used to connect the light source structure 500.

[0031] In this way, the light guide rod mounting member 200 and the fixing base 300 are used to achieve a stable connection between the light guide rod 100 and other optical structures, thereby ensuring the stability of the light emitted by the light guide rod 100. In practical applications, the light guide assembly can be applied to a microscopic optical system, where the light emitted by the light source structure 500 is reflected multiple times by the side of the prism and / or prism structure of the light guide rod 100, and finally the light is adjusted to an emitted light with uniform intensity, such as a fluorescent microscopic optical system using a multi-band LED combined light source.

[0032] In the embodiment of the present disclosure, the light guide rod 100 has a prism and / or a pyramid structure, and the light guide rod 100 may be a solid or hollow structure.

[0033] Furthermore, at least a portion of the light guide rod 100 is a prism and / or a prism structure.

[0034] In some embodiments, the light guide rod 100 may have a prism structure, and two bottom surfaces of the prism structure are the incident end surface and the emitting end surface of the light guide rod 100 .

[0035] In some other embodiments, the light guide rod 100 may have a prism structure, and two bottom surfaces of the prism structure are the incident end face and the emitting end face of the light guide rod 100 .

[0036] In other embodiments, the light guide rod 100 may have N prism structures with different bottom surface areas, wherein N is a positive integer greater than or equal to 2, and the N prism structures are connected end to end along their axial direction to form the light guide rod 100.

[0037] In other embodiments, the light guide rod 100 may have N prism structures with different bottom surface areas, wherein N is a positive integer greater than or equal to 2, and the N prism structures are connected end to end along their axial direction to form the light guide rod 100.

[0038] In other embodiments, the light guide rod 100 may have N1 prism structures with different bottom areas and N2 prism structures with different bottom areas, wherein N1 and N2 are positive integers greater than or equal to 1, and the prism structures and prism structures are connected end to end along their axial direction to form the light guide rod 100.

[0039] Further, in some embodiments, the light guide rod 100 may be a quadrangular prism structure. Figure 1 , the light guide rod 100 is a straight quadrangular prism structure.

[0040] In some embodiments, the light guide rod 100 may have a smooth surface and / or a frosted surface. In one embodiment, one end of the light guide rod 100 is a frosted surface, and the other end is a polished surface.

[0041] In some embodiments, the light guide rod 100 may be made of glass or plastic. In one embodiment, the light guide rod is made of quartz.

[0042] Based on some or all of the above embodiments, in the embodiment of the present disclosure, the light guide assembly further includes a light guide rod fastener 400, and the light guide rod 100 can be fixed in the first through cavity 230 by sleeve-mounting the light guide rod fastener 400 outside the light guide rod sleeve 220. In this way, the stability of the light guide rod 100 after connection is increased.

[0043] In some embodiments, the light guide rod sleeve 220 is threadedly connected to the light guide rod fastener 400. Specifically, the light guide rod sleeve 220 is provided with a first external thread, and the light guide rod fastener 400 is provided with a first internal thread matching the first external thread, and the light guide rod sleeve 220 can be threadedly connected to the light guide rod fastener 400 through the first external thread and the first internal thread. In one embodiment, the light guide rod fastener 400 can be a nut.

[0044] In some embodiments, the side of the second through cavity 310 facing the light guide rod mounting member 200 may allow the light guide rod fastener 400 to pass through; and / or, the side of the second through cavity 310 facing the light source structure 500 allows the light guide rod fastener 400 to pass through.

[0045] Based on some or all of the above implementations, in the embodiments of the present disclosure, please refer to Figure 3 The connecting portion 210 is provided with a sink 240 for mounting the optical lens 600, and the port of the first through cavity 230 is arranged in the middle of the sink 240, so that the central axis of the light guide rod 100 coincides with the central axis of the optical lens 600. In this way, the optical lens 600 can be attached to the sink 240, and the side wall of the sink 240 can protect the edge of the lens, reducing the possibility of damage to the optical lens 600. In addition, it is conducive to the concentric arrangement of the optical lens 600 and the light guide rod 100.

[0046] In a specific embodiment, when the light guide rod 100 is inserted into and fixed in the first through cavity 230, and the light guide rod sleeve 220 is inserted into and fixed in the second through cavity 310, the optical lens 600 is installed on the connecting part 210, and the optical lens 600 and the light guide rod 100 are concentric; further, after the fixed base 300 is installed on the light source structure 500, the optical lens 600, the light guide rod 100 and the light-emitting area of ​​the light source are concentric; further, one end of the light guide rod 100 abuts against the light-emitting area of ​​the light source structure 500 or the light-emitting area cover.

[0047] In practical applications, the major diameter of the first through cavity 230 is greater than the major diameter of the light guide rod 100 .

[0048] In some embodiments, the first through cavity 230 has the same shape as the light guide rod 100. In one embodiment, the first through cavity 230 is a right quadrangular prism structure.

[0049] In some embodiments, the recessed platform 240 cooperates with the gap 270 of the optical lens 600 .

[0050] Based on some or all of the above embodiments, in the embodiment of the present disclosure, the major diameter of the connecting portion 210 is greater than the major diameter of the second through cavity 310. When the light guide rod sleeve 220 is inserted into the second through cavity 310, the connecting portion 210 is mounted on the first end surface 320. In this way, the light guide rod mounting member 200 with the light guide rod 100 fixed thereto is placed on the fixing base 300.

[0051] In some embodiments, the first end surface 320 is a planar structure, and the side of the connecting portion 210 facing the first end surface 320 is also a planar structure.

[0052] In some embodiments, the side profile of the light guide rod mounting member 200 may be T-shaped, the upper portion of the T-shaped portion is the connecting portion 210 , and the lower portion of the T-shaped portion is the light guide rod sleeve 220 .

[0053] Based on some or all of the above embodiments, in some embodiments, the light guide rod sleeve 220 can be screwed into the second through cavity 310. Specifically, the light guide rod sleeve 220 is provided with a second external thread, and the side wall of the second through cavity 310 is provided with a second internal thread matching the second external thread, and the light guide rod sleeve 220 can be screwed into the second through cavity 310 through the second external thread and the second internal thread. In this way, the position of the light guide rod sleeve 220 in the second through cavity 310 is fixed.

[0054] Based on some or all of the above embodiments, in other embodiments, one of the first end surface 320 and the connecting portion 210 is provided with a positioning pin 250, and the other is provided with a positioning groove 340 matching the positioning pin 250. When the connecting portion 210 is placed on the first end surface 320, the position of the light guide rod sleeve 220 in the second through cavity 310 can be fixed by matching the positioning pin 250 with the positioning groove 340. In one embodiment, at least two positioning pins 250 are provided to limit the relative movement between the light guide rod mounting member 200 and the fixing base 300 after the light guide rod sleeve 220 is inserted into the second through cavity 310.

[0055] Based on some or all of the above embodiments, in the embodiment of the present disclosure, when the light guide rod 100 is fixed in the first through cavity 230, the emission end of the light guide rod 100 is flush with the end surface of the connecting portion 210, or the emission end of the light guide rod 100 is slightly lower than the end surface of the connecting portion 210. In this way, the emission end of the light guide rod 100 is protected to prevent it from being broken due to external forces (such as stress between the light guide rod 100 and the optical lens 600).

[0056] In some embodiments, the emission end of the light guide rod 100 is flush with the bottom surface of the sink 240 , or slightly lower than the bottom surface of the sink 240 .

[0057] Based on some or all of the above embodiments, in the embodiment of the present disclosure, the light guide rod sleeve 220 includes a plurality of clamping pieces 260 arranged at intervals, and when the light guide rod 100 is fixed in the first through cavity 230, the clamping pieces 260 are in contact with the side surfaces of the light guide rod 100. In one embodiment, the light guide rod sleeve 220 includes four clamping pieces 260, and when the light guide rod 100 of a right quadrangular prism structure is fixed in the first through cavity 230, the four clamping pieces 260 are in contact with the four side surfaces of the light guide rod 100 in the axial direction, respectively.

[0058] Based on some or all of the above embodiments, in the embodiment of the present disclosure, there is a gap 270 between adjacent clamping pieces 260, and when the light guide rod 100 is clamped in the first through cavity 230, the axial edges of the light guide rod 100 are exposed in the gaps 270. In this way, the axial edges of the light guide rod 100 do not contact the light guide rod sleeve 220, and no stress is generated between the edges and the light guide rod mounting member 200 during installation and use, thereby reducing the possibility of the edges of the light guide rod 100 being broken due to stress.

[0059] Based on some or all of the above embodiments, in the embodiment of the present disclosure, when the light guide rod 100 is fixed in the first through cavity 230, the edges of the light guide rod 100 at the emission end do not contact the edges of the first through cavity 230. In this way, no stress is generated between the light guide rod mounting member 200 and the light guide rod mounting member 200 during installation and use, thereby reducing the possibility of the edges of the light guide rod 100 being broken due to stress.

[0060] In some embodiments, please refer to Figure 5 A through cavity sink 280 is provided at the port of the first through cavity 230 of the sink 240 , so that the side wall of the port of the first through cavity 230 avoids contact with the edges of the emission ends of the light guide rod 100 .

[0061] In other embodiments, the side lengths of the ports of the first through cavity 230 of the connecting portion 210 are greater than the corresponding side lengths of the light guide rod 100, so that the side walls of the ports of the first through cavity 230 avoid contact with the edges of the emission ends of the light guide rod 100.

[0062] Based on some or all of the above embodiments, in the embodiment of the present disclosure, when the light guide rod 100 is fixed in the first through cavity 230, the incident end of the light guide rod 100 exceeds the light guide rod sleeve 220. In this way, no stress is generated between the light guide rod mounting member 200 and the light guide rod mounting member 200 during installation and use, which reduces the possibility of the edge of the light guide rod 100 being broken due to stress, and is conducive to the contact setting between the light guide rod 100 and the light source structure 500.

[0063] Based on some or all of the above embodiments, in the disclosed embodiment, a positioning column 350 is provided on the second end surface 330 of the fixing base 300, which matches the concentric positioning hole on the light source structure 500. This is conducive to the alignment and concentric arrangement of the light emitting area of ​​the light source structure 500 and the light guide rod 100.

[0064] In some embodiments, at least two positioning posts 350 are provided.

[0065] Based on some or all of the above implementations, in the embodiment of the present disclosure, at least one mounting hole 360 ​​is further provided on the second end surface 330 of the fixing base 300 for setting a fixing connector connected to the light source structure 500 .

[0066] Based on some or all of the above embodiments, in the embodiment of the present disclosure, at least one installation window 370 is further provided on the side surface of the fixed base 300 along the circumference of the second through cavity 310 .

[0067] In some embodiments, the mounting hole 360 ​​is located on a side of the mounting window 370 . Thus, the fixing connector is inserted into the mounting hole 360 ​​through the mounting window 370 and then connected to the light source structure 500 .

[0068] Another aspect of the present disclosure provides an optical system, including a light source structure 500, an optical lens 600 and the above-mentioned light guide assembly.

[0069] In one embodiment, the method for installing the light guide assembly in the optical system can be: inserting the light guide rod sleeve 220 of the light guide rod mounting member 200 into the second through cavity 310 of the fixed base 300, and inserting the positioning pin 250 into the positioning groove 340; inserting the light guide rod 100 into the first through cavity 230 of the light guide rod mounting member 200, extending the light guide rod fastener 400 from the side of the second through cavity 310 facing the light source structure 500, and fixing the light guide rod 100 in the first through cavity by sleeved on the light guide rod sleeve 220. 230; insert the positioning column 350 of the fixed base 300 into the concentric positioning hole of the light source structure 500, and fix the fixed base 300 on the light source structure 500 by setting a fixed connecting piece in the mounting hole 360 ​​of the fixed base 300. At this time, the light guide rod 100 abuts against the light emitting area of ​​the light source structure 500 or the cover plate of the light emitting area; install the optical lens 600 in the sink 240 of the connecting part 210 of the light guide rod mounting piece 200 to complete the installation of the light guide assembly and the optical lens 600.

[0070] The light guide assembly and optical system provided by the present invention can achieve a stable connection between the light guide rod, light source structure and optical lens, ensure their concentric setting, ensure the stability of the light emitted by the light guide rod, and can reduce the stress that the light guide rod is susceptible to during installation and use, reducing the possibility of the light guide rod breaking.

[0071] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0072] It should be noted that all the features recorded in this application (including technical features recorded in different embodiments) can be combined arbitrarily under reasonable circumstances, and new technical solutions formed by the combination are all within the protection scope of this application.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A light guide assembly, applied to a microscopic illumination system, characterized in that: It comprises a light guide rod (100), a light guide rod mounting member (200) and a fixing base (300); The light guide rod mounting member (200) is provided with a connecting portion (210) and a light guide rod sleeve (220) at opposite ends thereof, the connecting portion (210) and the light guide rod sleeve (220) having a first through cavity (230) in communication, and the light guide rod (100) can be inserted into and fixed in the first through cavity (230); The fixed base (300) is provided with a second through cavity (310) for inserting the light guide rod sleeve (220); when the light guide rod sleeve (220) is inserted into the second through cavity (310), the connecting portion (210) is placed on a first end surface (320) of the fixed base (300); and a second end surface (330) of the fixed base (300) opposite to the first end surface (320) is used for connecting to a light source structure (500); The connecting portion (210) is provided with a sink (240) for connecting the optical lens (600); the port of the first through cavity (230) is arranged in the middle of the sink (240), so that the central axis of the light guide rod (100) coincides with the central axis of the optical lens (600); the sink (240) and the optical lens (600) are clearance-matched; The light guide assembly further comprises a light guide rod fastener (400), and the light guide rod (100) can be fixed in the first through cavity (230) by sleeve-mounting the light guide rod fastener (400) outside the light guide rod sleeve (220).

2. The light guide assembly according to claim 1, characterized in that: The light guide rod (100) has a prism and / or pyramid structure.

3. The light guide assembly according to claim 1, characterized in that: The major diameter of the connecting portion (210) is greater than the major diameter of the second through cavity (310), and when the light guide rod sleeve (220) is inserted into the second through cavity (310), the connecting portion (210) is mounted on the first end surface (320).

4. The light guide assembly according to claim 3, characterized in that: The first end surface (320) and the connecting portion (210) are selectively provided with a positioning pin (250), and the other is provided with a positioning groove (340) matching the positioning pin (250); when the connecting portion (210) is placed on the first end surface (320), the position of the light guide rod sleeve (220) in the second through cavity (310) can be fixed by matching the positioning pin (250) and the positioning groove (340).

5. The light guide assembly according to claim 1, characterized in that: When the light guide rod (100) is fixed in the first through cavity (230), the emission end of the light guide rod (100) is flush with the end surface of the connecting portion (210), or the emission end of the light guide rod (100) is slightly lower than the end surface of the connecting portion (210).

6. The light guide assembly according to any one of claims 1 to 5, characterized in that: The light guide rod sleeve (220) comprises a plurality of clamping plates (260) arranged at intervals, and when the light guide rod (100) is fixed in the first through cavity (230), the clamping plates (260) are in contact with the side surfaces of the light guide rod (100).

7. The light guide assembly according to claim 6, characterized in that: There are gaps (270) between adjacent clamping sheets (260), and when the light guide rod (100) is fixed in the first through cavity (230), the axial edges of the light guide rod (100) are exposed in the gaps (270).

8. The light guide assembly according to any one of claims 1 to 5 and 7, characterized in that: When the light guide rod (100) is fixed in the first through cavity (230), the incident end of the light guide rod (100) protrudes beyond the light guide rod sleeve (220).

9. The light guide assembly according to claim 2 or 7, characterized in that: When the light guide rod (100) is fixed in the first through cavity (230), the edges at the end of the light guide rod (100) do not contact the edges of the port of the first through cavity (230).

10. The light guide assembly according to claim 1, characterized in that: A positioning column (350) is provided on the second end surface (330) of the fixed base (300), and the positioning column matches the concentric positioning hole on the light source structure (500).

11. The light guide assembly according to claim 1 or 10, characterized in that: At least one mounting hole (360) is also provided on the second end surface (330) of the fixing base (300) for arranging a fixing connection piece connected to the light source structure (500).

12. The light guide assembly according to claim 11, characterized in that: At least one installation window (370) is also provided on a side surface of the fixed base (300) along the circumference of the second through cavity (310).

13. An optical system, comprising a light source structure (500), an optical lens (600), and the light guide assembly according to any one of claims 1 to 12.

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