CN216310313U - Light guide structure without channeling - Google Patents
Light guide structure without channeling Download PDFInfo
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- CN216310313U CN216310313U CN202122344559.4U CN202122344559U CN216310313U CN 216310313 U CN216310313 U CN 216310313U CN 202122344559 U CN202122344559 U CN 202122344559U CN 216310313 U CN216310313 U CN 216310313U
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Abstract
The utility model provides a light channeling-free light guide structure, wherein connecting ribs are required to be added between each light guide column of a connected light guide column, the connecting ribs can ensure the accurate relative position of each light guide column and play a role in strengthening the overall strength, but the connecting ribs can cause the light channeling problem.
Description
Technical Field
The utility model relates to the technical field of communication, in particular to a non-channeling light guide structure.
Background
With the increasing bandwidth in the field of communication technology, the number of modules carried by a line card is increasing, and the number of indicator lights required to be used is also increasing, but the width of the line card cannot be increased all the time, and how to guide the light of the indicator lights in the disc to the panel side is realized by designing a light guide column. In the technical field of communication, in order to facilitate observation of the operation condition of each module port of a line card, an indicator lamp needs to be configured for each port, and whether equipment normally operates can be known through color change of the indicator lamp. When the pilot lamp is inside the on-line card, need design a leaded light post structure and with the leading-in panel side of inside pilot light, need design disjunctor leaded light post structure when the pilot lamp quantity is more. The utility model provides a structure for solving the problem of light channeling of a connected light guide column connecting rib, which is characterized in that the connecting rib is required to be additionally arranged between every two light guide columns, can ensure the accurate relative position of every light guide column and plays a role in strengthening the integral strength, but the connecting rib can cause the problem of light channeling, and how to block the light from being transmitted on the connecting rib becomes one of the difficulties in solving the problem of light channeling of the light guide columns.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the problem that light is spread on a connecting rib, so that the phenomenon of light channeling is caused, and the utility model is realized as follows: the utility model provides a solve disjunctor leaded light post splice bar and scurry structure of light, block light and propagate on the splice bar through the inclined plane that the structure has certain angle.
In order to achieve the purpose, the utility model adopts the following technical scheme:
first aspect, a no light guide optical structure scurries, includes first leaded light post 1, second leaded light post 8, first splice bar 2 and inclined plane 5, wherein:
Preferably, the cross-sectional shapes of the two inclined reflective surfaces 5 in the first connecting rib 2 are isosceles triangles.
Preferably, the included angle between the inclined plane of the inclined plane reflecting surface 5 and the cross-section plane of the first connecting rib 2 is theta, and the value range of theta is more than 48 degrees and less than 84 degrees.
Preferably, the refractive index of the material used for the first connection rib 2 is 1.50.
Preferably, for the first connecting rib 2 with the material refractive index of 1.50, it is required to ensure that the incident angle of the incident light received by the first connecting rib 2 is less than 42 °.
Preferably, the light entering the first rib 2 is refracted into the air or reflected back along the light exit path by two inclined reflective surfaces 5 inside the first rib 2.
Preferably, the light inlet of the first light guide column 1 and the light inlet of the second light guide column 8 are respectively provided with a patch lamp 3, light emitted by the patch lamps 3 is divergent, and the light is emitted from the top and the side of the patch lamps 3.
Preferably, the first light guide column 1 and the second light guide column 8 are provided with second connecting ribs 7 at positions close to the output end.
Preferably, the inner surface of the first light guide pillar 1 and the inner surface of the second light guide pillar 8 reflect the incident light, and the incident light reaches the output end of the first light guide pillar 1 and the output end of the second light guide pillar 8 through reflection.
Preferably, the outermost layer of the structure is fixedly supported by the mounting seat 6.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a structural diagram of a channeling-free light guide structure according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of a channeling-free light guide structure provided by an embodiment of the present invention;
fig. 3 is a diagram of a left side light reflection path of a connecting rib of a fleecy-free light guide structure according to an embodiment of the present invention;
fig. 4 is a diagram of a left side light reflection path of a connecting rib of a fleecy-free light guide structure according to an embodiment of the present invention;
fig. 5 is a diagram of a left side light reflection path of a connecting rib of a fleecy-free light guide structure according to an embodiment of the present invention;
fig. 6 is a diagram of a left side light reflection path of a connecting rib of a fleecy-free light guide structure according to an embodiment of the present invention;
fig. 7 is a diagram of a right side light reflection path of a connecting rib of a fleecy-free light guide structure according to an embodiment of the present invention;
fig. 8 is a diagram of a right light reflection path of a connecting rib of a fleecy-free light guide structure according to an embodiment of the present invention.
Detailed Description
In the description of the present invention, the terms "inner", "outer", "longitudinal", "lateral", "upper", "lower", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are for convenience only to describe the present invention without requiring the present invention to be necessarily constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the embodiment of the utility model provides a fleecy-free light guide structure, as shown in fig. 1 and 2.
A channeling-free light guiding structure comprising a first rib 2 and a beveled reflective surface 5 in the first rib 2, wherein:
As shown in fig. 1, the present invention includes a first light guide column 1 and a second light guide column 8, the first connecting rib 2 is disposed near the light inlet of the first light guide column 1 and the second light guide column 8, the second connecting rib 7 is disposed near the output end of the first light guide column 1 and the second light guide column 8, the first connecting rib 2 and the second connecting rib 7 ensure the accurate relative position of the first light guide column 1 and the second light guide column 8, and play a role of enhancing the overall strength, but the first connecting rib 2 may cause the light channeling problem, so the present invention has two inclined reflective surfaces 5 disposed at different axial positions opposite to the inner surface of the first connecting rib 2, and prevents the light rays emitted from the first light guide column 1 into the first connecting rib 2 from being emitted into the second light guide column 8, which causes the light channeling phenomenon.
The materials used for the vast majority of the first connection ribs 2 are plastic and glass, with a refractive index of about 1.50.
According to snell's law nini θ i ═ nfsin θ f, where ni is the refractive index of the incident medium, nf is the refractive index of the reflective medium, θ i is the incident angle, θ f is the refraction angle, where the incident medium is glass, ni is 1.5, the refraction medium is air, nf is 1, and when the incident angle θ i is 42 °, the refraction angle is parallel to the medium boundary, which is the critical point of total reflection, as obtained from snell's law 1.5 sin42 ° -1 sin θ f, θ f is 90 °; according to the principle of light refraction: when thetai is more than 42 degrees and thetaf is more than 90 degrees, the light is refracted into the glass and is totally reflected.
Therefore, the critical angle of total internal reflection of the first light guide pillar 1 and the second light guide pillar 8 made of the two materials is about 42 °, so that the incident angle of the incident light needs to be less than 42 ° in order to avoid the total reflection of the incident light.
The first light guide column 1 and the second light guide column 8 are curved, so that the light rays injected into the first light guide column 1 and the second light guide column 8 can reach the output end only after being processed in the first light guide column 1 and the second light guide column 8, and therefore, the utility model also relates to the following design:
as shown in fig. 1, the inner wall materials of the first light guide column 1 and the second light guide column 8 are mirror-processed, so that the light rays emitted into the first light guide column 1 and the second light guide column 8 can be reflected, and the light rays can finally reach the output end.
The positions, close to the output end, of the first light guide column 1 and the second light guide column 8 are provided with second connecting ribs 7, so that the accurate relative positions of the first light guide column 1 and the second light guide column 8 are ensured, the effect of enhancing the overall strength is achieved, and the design of an inclined plane reflecting surface is not involved in the second connecting ribs 7; because the light near the output ends of the first light guide column 1 and the second light guide column 8 are parallel light, the light is prevented from channeling by arranging the second connecting rib 7 near the output ends.
The positions of the light inlets of the first light guide column 1 and the second light guide column 8 are respectively provided with a patch lamp 3, wherein light emitted by the patch lamps 3 is in a divergent shape, and the light is emitted from the top and the side of the patch lamps 3, and because the first connecting ribs 2 are positioned near the light inlets of the first light guide column 1 and the second light guide column 8, part of the light emitted by the patch lamps 3 is emitted into the first connecting ribs 2, and if the light is not processed, the light channeling phenomenon occurs between the first light guide column 1 and the second light guide column 8; in order to solve the light channeling phenomenon between the first light guide pillar 1 and the second light guide pillar 8, the utility model designs the following design:
as shown in fig. 3 to 8, two inclined reflection surfaces 5 are disposed at different axial positions of the inner surface of the first connecting rib 2, wherein the included angle between the inclined surface of the inclined reflection surface 5 and the sectional view surface of the first connecting rib 2 is θ, and for the convenience of designing and calculating the value range of θ, the sectional view surface shape of the two inclined reflection surfaces (5) in the design is an isosceles triangle, wherein the value range of θ is 48 ° < θ < 84 °.
The inclined reflective surfaces 5 ensure that light entering the first connecting rib 2 is refracted into the air or reflected back through the two inclined reflective surfaces 5 formed on the first connecting rib 2.
The following embodiment gradually analyzes the reflection path of light by intercepting the structure of the first connecting rib 2, and demonstrates that the value range of the angle theta of the reflection inclined plane is 48 degrees < theta < 84 degrees.
Example 2:
in this embodiment, a scene is set when light rays are emitted from the left side of the first connecting rib 2 to the left reflecting inclined plane 8, and in order to ensure that the light channeling phenomenon does not occur, an included angle θ between the left reflecting inclined plane 8 and the first connecting rib 2 is calculated1As a range for demonstrating the angle theta of the reflection slopeIs a partial condition of 48 DEG < theta < 84 deg.
As shown in FIG. 3, the ray 201 has the largest incident angle from point A to point B, and has a reflection angle of 90-theta or more1When the light is totally reflected into the air, alpha 1 is more than or equal to 90 degrees to theta1(ii) a Meanwhile, in order to prevent the 201 light from generating total reflection, alpha 1 is required to be less than 42 degrees, so that 90-theta1< 42 ° to get θ1＞48°。
When 202 light enters the reflecting inclined plane 8 from the point A to the point C perpendicularly, the angle alpha 2 can be obtained from the inner angle of the triangle and the formula is 180-2 theta1From the law of light refraction, it is known that 1 x sin α 2 is 1.5 x sin β 1, sin β 1 is sin α 2/1.5 < 0.667, and β 1 is always less than 42 °, when the light is reflected to the reflection slope 10 as shown in the figure and partially refracted to the air, and then 0 ° < α 2 < 90 °, i.e., 0 ° < 180 ° -2 θ1Less than 90 degrees, and the angle theta is less than 45 degrees1＜90°。
When the 203 th ray goes from the point a to the point D, the incident angle of the light to the reflecting slope 10 is smaller than α 2, which is the same as the 202 nd ray.
The reflection bevel angle theta is thus reflected in that case1The value range is as follows: theta < 48 DEG1＜90°。
Example 3:
in this embodiment, the light is used as a scene when the light beam is emitted from the left side to the right side inclined plane 9 of the first connecting rib 2, and in order to ensure that the light channeling phenomenon does not occur, the included angle θ between the reflecting inclined plane 9 and the first connecting rib 2 is calculated2The range of (a) is used as a partial condition for demonstrating that the range of the angle theta of the reflection inclined plane is more than 48 degrees and less than 84 degrees.
When light is emitted from the left side of the first connecting rib 2 to the right reflecting inclined surface 9:
as shown in fig. 4, a light ray 401 enters the first connecting rib 2 from the left side and then enters the right reflecting inclined plane 9, when an incident angle α 3 is less than 42 °, the left light enters the right reflecting inclined plane 9 to be reflected and refracted, and a refracted light ray 402 enters the air and is lost; and the light 403 that the left side light takes place to reflect can be shot to left side reflection inclined plane 10 on, the incident angle alpha 4 of reflection light is less than 42, consequently, the light 403 that shoots at left side reflection inclined plane 10 can take place refraction and reflection equally, wherein the light 404 that takes place the refraction has propagated to and has lost in the air, the light 405 that takes place to reflect shoots on right side reflection inclined plane 9, take place refraction light 406, because light 406 has been through many times refraction reflection, light has been by a large amount of losses, consequently and can not pass to and take place to scurry the light phenomenon in the second light guide column 8 on the right side of first connecting rib 2.
When the light beam is emitted to the right reflection inclined plane 9 from the left side of the first connecting rib 2, the incident angle is greater than or equal to 42 degrees, the light is firstly totally reflected, and is refracted after being reflected to the upper surface, and the analysis is carried out according to two conditions:
in the first case, as shown in fig. 5, when the incident angle β 1 of the light ray 501 is equal to 42 °, the light ray is reflected to the upper edge of the first link rib 2, and the incident angle α 5 of the light ray 502 is 180 ° - β 2-84 °, which is calculated as β 2 being 138 ° - γ 1, γ 1 being 180 ° - θ 12-48 °, calculated as α 5 ═ θ2-42 °, where the light is required to be refracted into the air, so α 1 ═ θ2-42 ° < 42 °, to θ2＜84°；
As shown in fig. 5, in the second case, the incident angle is the largest when the light ray 503 passes through point D, where α 7 is greater than 42 °, and the incident angle α 6 at which the light ray 504 is reflected to the upper edge of the first link 2 is γ 2+90 ° -2 α 7, where α 7+ θ - γ 2 is 90 °, and α 6 is θ - α 7; as can be seen from the analysis, the larger α 7, the smaller α 6, and θ2The closer the value is to alpha 7, the closer the value of alpha 6 is to 0, the better the anti-light-channeling effect is, and theta can be obtained2＞α7＞42°。
The reflection bevel angle theta is thus reflected in that case2The value range is as follows: 42 DEG < theta < 84 deg.
As shown in fig. 6, the light entering from the left is reflected by the left inclined plane and refracted into the air, so it is necessary to ensure that the light is within the range of the left inclined plane, as shown in the figure, the limit is when the light passes through the point C through the AB ray.
Assuming that the triangle bottom side is 2a, the following relationship can be obtained from the triangle formula:
from the above equation:
θ: base angle of isosceles triangle
H1: distance from top of left triangular notch to lower end face
L1: distance from top of the left triangular notch to side 2 of the first connecting rib
L2: distance between two triangle gap vertexes
2a base side length of isosceles triangle
Example 4:
in the embodiment, a scene is taken when light rays are emitted to the right reflecting inclined plane 11 from the right side of the first connecting rib 2, and in order to ensure that the light channeling phenomenon does not occur, all scenes that the incident light rays can appear in the scene are discussed in the embodiment as a partial condition for demonstrating that the value range of the angle theta of the reflecting inclined plane is 48 degrees < theta < 84 degrees.
When light is emitted from the right side of the first connecting rib 2 to the right reflecting inclined surface 11:
as shown in fig. 7, when the incident angle of the light ray 701 to the right reflecting inclined plane 11 is small, the refracted light ray 702 enters the air and is lost; the light ray 703 vertically strikes the right reflecting inclined plane 11 and is lost in the air; when the light ray 704 reaches the right reflecting inclined plane 11 with a larger incident angle, the right reflecting inclined plane 11 reflects the light ray 705 to the upper edge of the first connecting rib 2, and the refracted light ray of the light ray 705 is emitted into the air.
When light is incident on the left reflecting slope 10 from the right side of the first connecting rib 2:
as shown in fig. 8, when the incident angle of the light ray 801 to the left reflecting inclined plane 10 is small, the refracted light ray 802 is refracted into the air; when the right incident light beam is incident into the first connecting rib 2 through the path of the light beam 803, the light beam 803 is firstly incident on the upper edge of the first connecting rib 2, the reflected light beam 804 is incident on the left reflecting inclined plane 10, and the reflected light beam 805 is incident on the lower edge of the first connecting rib 2; the incident light 806 directly irradiates the upper edge, the refracted light 807 is refracted into the air and lost, the reflected light of the light 806 is refracted and reflected several times in the first connecting rib 2 and then lost, and the light cannot be conducted to the left first light guiding pillar 1 to generate light channeling.
According to the summary of the embodiment 2, the embodiment 3 and the embodiment 4, because θ ═ θ1＝θ2And obtaining the value range of theta:
wherein, the theta is more than 48 degrees and less than 84 degrees
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a light guide optical structure is scurried to nothing, its characterized in that includes first leaded light post (1), second leaded light post (8), first splice bar (2) and inclined plane of reflection (5), wherein:
first splice bar (2) are located between first leaded light post (1) and second leaded light post (8), first splice bar (2) position is close to the income light mouth of first leaded light post (1) and second leaded light post (8), and the relative different axial positions of first splice bar (2) internal surface are provided with two inclined plane reflectors (5).
2. A channeling-free light guiding structure as claimed in claim 1, wherein the cross-sectional shapes of the two inclined reflective surfaces (5) in the first connecting rib (2) are isosceles triangles.
3. The optical structure of claim 1, wherein the inclined surface of the inclined reflective surface (5) forms an angle θ with the first connecting rib (2) in the cross-sectional view, and θ is in a range of 48 ° < θ < 84 °.
4. A channeling-free light-guiding structure as claimed in claim 1, characterized in that said first connecting ribs (2) are made of a material having a refractive index of 1.50.
5. A channeling-free light guiding structure as claimed in claim 4, wherein for the first connecting rib (2) with a refractive index of 1.50, it is necessary to ensure that the incident angle of the incident light received by the first connecting rib (2) is less than 42 °.
6. A channeling-free light-guiding structure as claimed in claim 1, wherein the light rays entering the first rib (2) are refracted into the air or reflected back along the light ray exit path by two inclined reflective surfaces (5) inside the first rib (2).
7. The channeling-free light guide structure according to claim 1, wherein a patch lamp (3) is respectively arranged at the light inlet of the first light guide column (1) and the light inlet of the second light guide column (8), light emitted by the patch lamp (3) is in a divergent shape, and the light is emitted from the top and the side of the patch lamp (3).
8. The channeling-free light guide structure as claimed in claim 1, wherein the first light guide pillar (1) and the second light guide pillar (8) are provided with second connecting ribs (7) near the output end.
9. The channeling-free light guide structure as recited in claim 1, wherein the inner surface of the first light guide pillar (1) and the inner surface of the second light guide pillar (8) reflect incident light, and the incident light is reflected to the output end of the first light guide pillar (1) and the output end of the second light guide pillar (8).
10. A channeling-free light guiding structure according to claim 1, characterized in that the outermost layer of the structure is fixedly supported by a mounting seat (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122344559.4U CN216310313U (en) | 2021-09-27 | 2021-09-27 | Light guide structure without channeling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122344559.4U CN216310313U (en) | 2021-09-27 | 2021-09-27 | Light guide structure without channeling |
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| Publication Number | Publication Date |
|---|---|
| CN216310313U true CN216310313U (en) | 2022-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122344559.4U Active CN216310313U (en) | 2021-09-27 | 2021-09-27 | Light guide structure without channeling |
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|---|---|
| CN (1) | CN216310313U (en) |
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- 2021-09-27 CN CN202122344559.4U patent/CN216310313U/en active Active
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