CN209819269U - Optical system with refractive index matching medium - Google Patents
Optical system with refractive index matching medium Download PDFInfo
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- CN209819269U CN209819269U CN201920805129.8U CN201920805129U CN209819269U CN 209819269 U CN209819269 U CN 209819269U CN 201920805129 U CN201920805129 U CN 201920805129U CN 209819269 U CN209819269 U CN 209819269U
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Abstract
The utility model discloses an optical system with refractive index matching medium, which comprises a PCB board, a light source, a refractive index matching medium and a light guide rod which are arranged along a main optical axis in sequence, wherein the light source is arranged on the PCB board, the refractive index matching medium is clamped between the light source and the light guide rod, a first bracket is provided with a medium limiting hole which limits the refractive index matching medium between the light source and the light guide rod, the first bracket is sleeved outside the refractive index matching medium through the medium limiting hole, the first bracket is sleeved outside the light guide rod, the refractive index matching medium is limited between the light source and the light guide rod by the fixing effect of the medium limiting hole of the first bracket, the refractive index matching medium is prevented from flowing out from the light source to the light guide rod in the installation process, thereby influencing the risk of light guide effect, the stability of the optical system is improved.
Description
Technical Field
The utility model relates to a light technical field, more specifically relates to an optical system with refractive index matching medium.
Background
In the conventional stage lamps and dyeing lamps, a light guide rod is mostly used for guiding light in order to improve luminous flux and uniform color mixing. Since light energy loss is caused by light entering from a medium having a high refractive index to a medium having a low refractive index or light entering from a medium having a low refractive index to a medium having a high refractive index, the energy loss is more serious the larger the difference in refractive index is. So light jets out from the light source, and when getting into in the clearance between leaded light stick and the light source, because light source surface material refraction is great, the refracting index of air is less, can cause the certain energy loss of light, and when light entered into the leaded light stick in by the air again, because the material of leaded light stick generally is glass or optical plastic, light energy can lose once more to ultimate light energy loss is great.
The light loss caused by the change of the refractive index caused by the air gap can be solved by inserting the refractive index matching material of silicone gel between the light source and the incident light surface of the light guide rod, but the refractive index matching material is sticky colloid at normal temperature and is easy to flow out during installation, thereby influencing the light guide effect.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome at least one kind defect among the above-mentioned prior art, provide an optical system with refractive index matching medium, through the refractive index matching medium of the fixed centre gripping of first support of setting on the PCB board between light source and leaded light stick, prevent that it from flowing in the installation, reduce light energy loss.
In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides an optical system with refractive index matching medium, includes PCB board, light source, refractive index matching medium, the leaded light stick that sets gradually along the primary optical axis, the light source set up in the PCB board, the refractive index matching medium centre gripping in the light source with between the leaded light stick, first support have with the refractive index matching medium restrict in the light source with the spacing hole of medium between the leaded light stick, first support passes through the spacing pot head of medium is established outside the refractive index matching medium.
Furthermore, the refractive index matching medium completely covers the light emitting area of the light source, so that light rays emitted by the light source can completely enter the refractive index matching medium; the light incident surface of the light guide rod completely covers the refractive index matching medium, so that light rays emitted by the refractive index matching medium are enabled to enter the light guide rod through the light incident surface of the light guide rod, and therefore light energy loss is reduced.
Further, first support still include with the first hole section that spacing hole one end of medium is linked together, the leaded light stick inserts first hole section, the inner wall of first hole section with the seamless laminating of the lateral wall of leaded light stick, the spacing hole of medium with first hole section internal diameter is the same, in order to strengthen the stability of leaded light stick prevents that its lower extreme from rocking, simultaneously because seamless laminating, also can be better prevent the outflow of refractive index matching medium.
Further, first support still include with the second hole section that spacing hole one end of medium is linked together, the light source accept in the second hole section, the inner wall of second hole section with the seamless laminating of light source lateral wall, thus it is right first support is fixed a position, avoids first support deviation appears in the time of installation, so that the income plain noodles of leaded light stick with the light source can't align, simultaneously because seamless laminating, also can be better prevent the outflow of refractive index matching medium.
Furthermore, the light source comprises a light emitting area and a non-light emitting area arranged around the light emitting area, the aperture of the second hole section is larger than that of the medium limiting hole, namely, the step at the joint of the second hole section and the medium limiting hole is abutted against the non-light emitting area of the light source, so that fine light is prevented from leaking, light loss is reduced, and the refractive index matching medium can be better prevented from flowing out.
Furthermore, the LED lamp further comprises a second support used for positioning the light guide rod, the second support is sleeved outside the light guide rod, and the second support is provided with a plurality of supporting parts used for being fixed with the PCB and used for keeping the light guide rod and other optical components aligned, so that light can be effectively transmitted, and meanwhile, the light guide rod is prevented from falling or being damaged due to shaking when in use.
Furthermore, the first support is located in the annular ring formed by the support parts in a surrounding mode, so that the occupied space is small, the cost is saved, the practicability is high, and the appearance is more attractive.
Furthermore, the first support is made of opaque materials, and light leakage is prevented.
Further, first support passes through glue, screw, nail, rivet, vickers' jail, or buckle mechanism fixes on the PCB board, the alternative is more, can select suitable fixed mode according to actual conditions.
Furthermore, the refractive index matching medium is made of silicone grease, silica gel or epoxy resin, and the medium has a light guide effect, is viscous at normal temperature, is solid when heated at high temperature, and has good light guide performance.
Further, still including being located the camera lens of leaded light stick light-emitting surface front end is adjusted along the optical axis the camera lens can realize different zooms effects, makes the scene effect abundanter.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the utility model provides an optical system with refracting index matching medium through inserting the refracting index matching medium between light source and leaded light stick, is connected light source and leaded light stick as an organic whole through the refracting index matching medium, and light directly gets into the leaded light stick through the refracting index matching medium after emitting out from the luminous region of light source, and light is not with the air contact, greatly reduced light energy loss, improved ultimate light energy loss, and the first support is established to refracting index matching medium overcoat, with the help of the fixed action in the spacing hole of medium of first support, with the restriction of refracting index matching medium between light source and leaded light stick, prevents that the refracting index matching medium from flowing out between light source and the leaded light stick in the installation to influence the risk of leaded light effect, improved optical system's stability.
Drawings
Fig. 1 is an exploded schematic view of the optical system of the present invention.
Fig. 2 is a schematic cross-sectional structural diagram of the optical system of the present invention.
Fig. 3 is an enlarged schematic view of the structure of the first bracket of the present invention.
Detailed Description
The drawings of the present invention are for illustration purposes only and are not to be construed as limiting the invention. For the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; the light source in the utility model is not limited to LED light source, including any kind of light source or other combined lighting equipment; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
As shown in fig. 1 to 3, an optical system with refractive index matching medium includes a PCB 100, a light source 200, a refractive index matching medium 300, a light guide rod 400 and a lens 500 sequentially disposed along a main optical axis, wherein the light source 200 is disposed on the PCB 100, the refractive index matching medium 300 is clamped between the light source 200 and the light guide rod 400, the lens 500 is disposed at a front end of a light emitting surface of the light guide rod 400, and the lens 500 is adjusted along the optical axis, so that different zooming effects can be realized. The first bracket 310 has a medium limiting hole 313 for limiting the refractive index matching medium 300 between the light source 200 and the light guide rod 400, and the first bracket 310 is sleeved outside the refractive index matching medium 300 through the medium limiting hole 313 and is used for fixing the refractive index matching medium 300 and preventing the refractive index matching medium 300 from flowing out during installation.
In the optical system with the index matching medium, the index matching medium 300 is inserted between the light source 200 and the light guide rod 400, the light source 200 and the light guide rod 400 are connected into a whole through the index matching medium 300, light rays emitted from the light emitting region of the light source 200 directly enter the light guide rod through the index matching medium 300 without contacting with air, so that the loss of light energy is greatly reduced, the final loss of light energy is improved, the first bracket 310 is sleeved outside the index matching medium 300, the index matching medium 300 is limited between the light source 200 and the light guide rod 400 by the fixing action of the medium limiting hole 313 of the first bracket 310, and the index matching medium 300 is prevented from flowing out from between the light source 200 and the light guide rod 400 in the installation process, thereby influencing the risk of the light guiding effect and improving the stability of the optical system.
In the preferred embodiment of the present invention, the refractive index matching medium 300 is a transparent colloid with high refractive index and high temperature resistance, which is viscous at room temperature, and is solid after being heated at high temperature, generally silicone grease, silica gel, or epoxy resin.
The utility model discloses in the preferred embodiment, index matching medium 300 covers completely on the luminous region of light source 200, the income plain noodles of leaded light stick 400 covers completely index matching medium 300 occupies the light source 200 with air gap's between the leaded light stick 400 position, handle the light source 200 with leaded light stick 400 passes through index matching medium 300 links together, guarantees the light of light source 200 transmission enters completely index matching medium 300, the process simultaneously the light that index matching medium 300 jetted out can all pass through the income plain noodles of leaded light stick 400 gets into in the leaded light stick 400 to reduce light energy loss.
The utility model discloses in the preferred embodiment, first support 310 still include with the first hole section 311 that spacing hole 313 one end of medium is linked together, light guide rod 400 inserts in the first hole section 311, the inner wall of first hole section 311 with the seamless laminating of lateral wall of light guide rod 400, in order to strengthen light guide rod 400's stability prevents that its lower extreme from rocking, simultaneously because seamless laminating, also can better prevent the outflow of refractive index matching medium spacing hole 313 of medium with first hole section 311 internal diameter is the same, and is convenient fixed simultaneously light guide rod 400 with refractive index matching medium 300 guarantees the collimation of light and propagates. In this embodiment, the first hole section 311 coincides with a center line of the medium limiting hole 313.
In the preferred embodiment of the present invention, the first bracket 310 further includes a second hole section 312 communicated with one end of the medium limiting hole 313, the light source 200 is accommodated in the second hole section 312, and the inner wall of the second hole section 312 is seamlessly attached to the outer wall of the light source 200. The first bracket 310 is positioned, and deviation is avoided when the first bracket 310 is installed, so that the light incident surface of the light guide rod 400 cannot be aligned with the light source 200.
In the preferred embodiment of the present invention, the light source 200 includes a light emitting region and a non-light emitting region surrounding the light emitting region, the aperture of the second hole section 312 is larger than the aperture of the medium limiting hole 313, that is, the second hole section 312 and the step at the connection of the medium limiting hole 313 are abutted to the non-light emitting region of the light source 200, and meanwhile, the first support 310 is made of opaque material to prevent fine light from leaking, reduce light loss, and better prevent the refractive index matching medium 300 from flowing out. In this embodiment, the second hole segment 312 coincides with a center line of the medium limiting hole 313.
Optionally, the hole wall thickness of the first hole section 311 is smaller than the hole wall thicknesses of the medium limiting hole 313 and the second hole section 312, so that the first bracket 310 is placed on the PCB board 100 more stably. Preferably, chamfers are arranged at the connection positions of the outer side of the hole wall of the first hole section 311, the outer side of the hole wall of the medium limiting hole 313 and the outer side of the hole wall of the second hole section 312, so that the appearance is more attractive.
In the preferred embodiment of the present invention, the light guiding rod 400 is further sleeved with a second bracket 410 for fixing the same, which is used to keep the light guiding rod 400 aligned with other optical components, so that light can be effectively transmitted, and the light guiding rod 400 is prevented from dropping or being damaged due to shaking when in use. The second bracket 410 is provided with a plurality of supporting parts 411 for fixing with the PCB 100, and the first bracket 310 is arranged in an annular ring surrounded by the supporting parts 411, so that the structure is simple, the occupied space is small, and the appearance is beautiful. In this embodiment, the PCB 100 is provided with receiving holes adapted to the supporting parts 411, and the receiving holes and the supporting parts cooperate with each other to fix the second bracket 410 on the PCB 100.
Alternatively, the first bracket 310 and the supporting member 411 may be fixed on the PCB 100 by glue, screws, nails, rivets, velcro, or a snap mechanism, and the fixing manner is selected according to actual requirements.
As shown in fig. 1 to 2, before the light guide rod 400 is installed, the first bracket 310 is sleeved outside the light guide rod 400, the index matching medium 300 and the light source 200, and then the index matching medium 300 is injected into the medium limiting hole 313 to completely cover the light emitting region of the light source 200, so that the risk that the index matching medium 300 flows out between the light source 200 and the light guide rod 400 in the installation process is avoided, thereby affecting the light guide effect, and the stability of the optical system is improved.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (12)
1. The utility model provides an optical system with refractive index matching medium, its characterized in that includes PCB board, light source, refractive index matching medium, the leaded light stick that sets gradually along the primary optical axis, the light source set up in the PCB board, refractive index matching medium centre gripping in the light source with between the leaded light stick, first support have with refractive index matching medium restrict in the light source with the spacing hole of medium between the leaded light stick, first support passes through the spacing pot head of medium is established outside the refractive index matching medium.
2. The optical system of claim 1, wherein the index matching medium completely covers the light emitting area of the light source, and the light incident surface of the light guide rod completely covers the index matching medium.
3. The optical system of claim 1, wherein the first holder further comprises a first hole section communicating with one end of the medium-limiting hole, the light guide rod is inserted into the first hole section, and an inner wall of the first hole section is seamlessly attached to an outer wall of the light guide rod.
4. An optical system as claimed in claim 3, wherein the medium-confining aperture has the same inner diameter as the first aperture section.
5. The optical system of claim 1, wherein the first holder further comprises a second hole section communicating with one end of the medium limiting hole, the light source is accommodated in the second hole section, and an inner wall of the second hole section is seamlessly attached to an outer wall of the light source.
6. The optical system as claimed in claim 5, wherein the aperture of the second hole segment is larger than that of the medium limiting hole, the light source includes a light-emitting region and a non-light-emitting region surrounding the light-emitting region, and the step at the connection between the second hole segment and the medium limiting hole is abutted against the non-light-emitting region of the light source.
7. The optical system of claim 1, further comprising a second bracket for positioning the light guide rod, wherein the second bracket is sleeved outside the light guide rod, and the second bracket is provided with a plurality of supporting members for fixing with the PCB.
8. An optical system having an index matching medium as claimed in claim 7, wherein said first support is located within an annular ring enclosed by said support members.
9. The optical system of claim 1, wherein the first support is made of an opaque material.
10. An optical system with an index matching medium as claimed in claim 1, wherein said first support is fixed to said PCB board by glue, screws, nails, rivets, velcro or snap-fit mechanisms.
11. An optical system as claimed in claim 1, characterized in that the index matching medium is made of silicone, silicone or epoxy.
12. The optical system of claim 1, further comprising a lens in front of the light exit surface of the light guide rod for achieving a zoom effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920805129.8U CN209819269U (en) | 2019-05-31 | 2019-05-31 | Optical system with refractive index matching medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920805129.8U CN209819269U (en) | 2019-05-31 | 2019-05-31 | Optical system with refractive index matching medium |
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| Publication Number | Publication Date |
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| CN209819269U true CN209819269U (en) | 2019-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920805129.8U Active CN209819269U (en) | 2019-05-31 | 2019-05-31 | Optical system with refractive index matching medium |
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| CN (1) | CN209819269U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20240077688A1 (en) * | 2021-01-07 | 2024-03-07 | Rockley Photonics Limited | Optical assemblies comprising a prism |
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2019
- 2019-05-31 CN CN201920805129.8U patent/CN209819269U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20240077688A1 (en) * | 2021-01-07 | 2024-03-07 | Rockley Photonics Limited | Optical assemblies comprising a prism |
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