CN220962025U - Collimation optical unit - Google Patents
Collimation optical unit Download PDFInfo
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- CN220962025U CN220962025U CN202322914473.XU CN202322914473U CN220962025U CN 220962025 U CN220962025 U CN 220962025U CN 202322914473 U CN202322914473 U CN 202322914473U CN 220962025 U CN220962025 U CN 220962025U
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Abstract
The utility model belongs to the technical field of optical application, and particularly relates to a collimation optical unit, which comprises: a unit main body provided with a light inlet part and a light outlet part, wherein the light inlet part is arranged at one side of the unit main body, and the light outlet part is arranged on the surface opposite to the light inlet part; the light incident part comprises a refraction surface and a first total reflection surface; the light emitting part comprises a first light emitting surface, the first light emitting surface is a cylindrical lens outer contour surface, the first light emitting surface is formed by a contour line in a mode of stretching along a contour line normal direction, and the stretching direction of the first light emitting surface is parallel to a symmetry axis of the unit main body in the horizontal direction of the end surface of the unit main body arranged into the light emitting part; the upper end and the lower end of the first light-emitting surface respectively extend to form a second light-emitting surface; the collimating optical unit has the effects of improving optical efficiency and reducing unit volume.
Description
Technical Field
The utility model belongs to the technical field of optical application, and particularly relates to a collimation optical unit.
Background
The collimating unit belongs to an optical element for input and output of an optical fiber communication optical device, and has the structure as follows: the divergent light is refracted into parallel light through the front similar convex lens, the collimating unit is used for coupling the light into a required device with maximum efficiency, the collimating unit of the optical scheme of the prior art is a combination of a primary optical system and a plane convex lens, the optical efficiency of the collimating unit of the optical scheme of the prior art is lower, the space volume is larger, and the modeling limit of the collimating unit is larger.
The prior art solutions described above have the following drawbacks: the collimating unit has a low optical efficiency and a large space requirement.
Disclosure of utility model
The utility model aims to provide a collimation optical unit so as to solve the technical problems of lower optical efficiency and larger space requirement and achieve the purposes of improving the optical efficiency and reducing the space requirement.
In order to solve the above technical problems, the present utility model provides a collimating optical unit, comprising:
A unit main body provided with a light inlet part and a light outlet part, wherein the light inlet part is arranged at one side of the unit main body, and the light outlet part is arranged on the surface opposite to the light inlet part;
the light incident part comprises a refraction surface and a first total reflection surface, and the refraction surface is a rotary cutting surface taking a symmetry axis in the horizontal direction of the end surface of the light incident part as a central axis and taking a curve as a contour line;
The first total reflection surface is a rotation surface taking a symmetry axis in the horizontal direction of the end surface provided with the light incident part as a central axis and taking a curve as a contour line;
the light emitting part comprises a first light emitting surface, the first light emitting surface is a cylindrical lens outer contour surface, the first light emitting surface is formed by a contour line in a mode of stretching along a contour line normal direction, and the stretching direction of the first light emitting surface is parallel to a symmetry axis of the unit main body on the horizontal direction of the end surface of the light emitting part;
the upper end and the lower end of the first light-emitting surface respectively extend to form a second light-emitting surface;
The second total reflection surface for converging light is arranged between the light inlet part and the second light outlet surface, and the second total reflection surface is a stretched curved surface.
Further, the unit body is in a mirror symmetry shape, the outer contour of the first light emitting surface is recessed towards the direction of the light incident part to form a step, and the recess is in mirror symmetry relative to a horizontal plane.
Further, a portion of the second light emitting surface, which is close to the first light emitting surface, is recessed in a direction of the light incident portion to form a step-shaped arrangement.
Further, a portion of the second light-emitting surface, which is close to the first light-emitting surface, is recessed toward the light-entering portion, and a reflective layer is disposed on the second light-emitting surface.
Further, the reflective layer arranged on the second light-emitting surface is an aluminized reflective layer.
Further, at least one of the refracting surface, the first total reflection surface, the second total reflection surface, the first light-emitting surface and the second light-emitting surface is provided with optical patterns.
Further, the plurality of unit main bodies are arranged along the horizontal direction to form parallel connection.
Further, the plurality of unit main bodies are arranged along the vertical direction to form parallel connection.
The beneficial effects of the utility model are as follows:
1. The optical efficiency of the collimating optical unit can be improved.
2. The unit volume of the collimating optical unit is reduced, and the application occasion of the collimating optical unit is expanded.
3. The unit main body can be singly used, and a plurality of unit main bodies can be connected in parallel for use.
In order to make the above objects, features and advantages of the present utility model more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural view of a first embodiment of a collimating optical unit of the present utility model;
FIG. 2 is a side view and schematic ray diagram of a first embodiment of a collimating optical unit of the present utility model;
FIG. 3 is a schematic diagram of a parallel arrangement of a second embodiment of a collimating optical unit of the present utility model;
FIG. 4 is a side view and schematic illustration of a light ray of a third embodiment of a collimating optical unit of the present utility model;
FIG. 5 is a side view and schematic illustration of a light ray of a fourth embodiment of a collimating optical unit of the present utility model;
fig. 6 is a side view and a schematic light ray diagram of a fifth embodiment of a collimating optical unit of the present utility model.
In the figure:
1. A unit main body; 2. a light inlet part; 3. a light emitting section; 4. a refractive surface; 5. a first total reflection surface; 6. a second total reflection surface; 7. a first light-emitting surface; 8. and a second light-emitting surface.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples:
The following is a first embodiment of a collimating optical unit according to the present utility model, as shown in fig. 1 and 2, comprising: a unit main body 1, wherein a light-in part 2 and a light-out part 3 are arranged on the unit main body 1, the light-in part 2 is arranged on one side of the unit main body 1, and the light-out part 3 is arranged on the surface opposite to the light-in part 2; the light incident portion 2 includes a refractive surface 4 and a first total reflection surface 5, the refractive surface 4 is a rotation cut-off surface with a symmetry axis in a horizontal direction of an end surface of the unit main body 1 where the light incident portion 2 is arranged as a central axis and with a curve as an outline; the first total reflection surface 5 is a rotation surface having a curved line as a contour line, and is centered on a symmetry axis in a horizontal direction of an end surface of the unit body 1 where the light unit 2 is disposed.
The light emitting portion 3 includes a first light emitting surface 7, the first light emitting surface 7 is a cylindrical lens outer contour surface, the first light emitting surface 7 is formed by stretching a contour line along a normal direction of the contour line, a stretching direction of the first light emitting surface 7 is parallel to a symmetry axis of the unit main body 1 in a horizontal direction of an end surface of the light emitting portion 2, and the first light emitting surface 7 in this embodiment is a cylindrical lens outer contour surface and has a focal line.
The upper end and the lower end of the first light-emitting surface 7 respectively extend to form a second light-emitting surface 8, the second light-emitting surface 8 is a stretched plane, a second total reflection surface 6 for converging light rays is arranged between the light-entering part 2 and the second light-emitting surface 8, and the second total reflection surface 6 is a stretched curved surface.
At least one of the refraction surface 4, the first total reflection surface 5, the second total reflection surface 6, the first light-emitting surface 7 and the second light-emitting surface 8 is provided with optical patterns, so that more uniform light distribution, an angle for light to spread left and right and a light type color can be realized in the process of refracting or total reflecting at least one of the above materials.
It should be noted that: the refraction surface 4 serving as the rotary cutting surface is internally provided with a light source, and light rays at all angles emitted by the light source enter the collimation unit through the refraction surface 4 to a large extent to be subjected to total reflection for a plurality of times, so that the collimation unit can effectively utilize the light rays; part of light rays entering the collimating unit are directly reflected or totally reflected by the first total reflection surface 5, are refracted onto the first light-emitting surface 7 through the interior of the collimating unit, and are refracted by the first light-emitting surface 7 to form parallel emergent light rays; the other light rays entering the collimating unit are refracted to the second total reflection surface 6 through the collimating unit, then the light rays are totally reflected by the second total reflection surface 6, the light rays which form parallel emergent rays are emitted from the second light emitting surface 8, and the effect of the second light emitting surface is converging light rays, so that the optical efficiency of the scheme is higher.
The following is a second embodiment of a collimating optical unit according to the present utility model, as shown in fig. 3, unlike the first embodiment, a plurality of unit bodies 1 are connected in parallel to form a unit group, and the plurality of unit bodies are arranged in a horizontal direction or a vertical direction to form parallel connection, and when the plurality of unit bodies 1 are connected in parallel, light patterns formed by the plurality of collimating optical units are superimposed at the same position to form a desired light pattern.
The following is a third embodiment of a collimating optical unit according to the present utility model, as shown in fig. 4, and is different from the first embodiment in that the outer contour of the cylindrical lens of the first light-emitting surface 7 is recessed in a direction facing the light-incident portion 2 to form a step, and the recess is mirror-symmetrical with respect to the symmetry axis of the unit body 1.
It should be noted that: the partial light rays entering the interior of the collimation unit are directly or totally reflected through the first total reflection surface 5, then are refracted through the first light-emitting surface 7 to form parallel emergent light rays, the outer contour of the cylindrical lens of the first light-emitting surface 7 faces the step formed by the concave direction of the light-entering part 2, the refraction stroke of the light rays in the interior of the collimation unit is reduced, the loss generated in the process of refracting the light rays in the interior of the collimation unit is avoided, and the optical efficiency of the collimation unit is improved.
The following is a fourth embodiment of a collimating optical unit according to the present utility model, which is different from the first embodiment in that, as shown in fig. 5, a portion of the second light-emitting surface 8 adjacent to the first light-emitting surface 7 is recessed in a stepped manner toward the light-entering portion 2.
It should be noted that: other light rays entering the collimating unit are directly refracted onto the second total reflection surface 6 through the collimating unit, then the light rays are totally reflected by the second total reflection surface 6, the part, close to the first light-emitting surface 7, of the second light-emitting surface 8 is recessed towards the direction of the light-entering part 2 to form a step-shaped arrangement, the thickness of the collimating unit between the second total reflection surface 6 and the second light-emitting surface 8 is reduced through the step-shaped arrangement, the light rays which are emitted in parallel are emitted from the second light-emitting surface 8, so that the aim of collimation is achieved, the direct travel of the light rays in the collimating unit after the light rays are totally reflected by the second total reflection surface 6 is reduced, loss of the light rays in the direct irradiation process of the collimating unit is avoided, and the optical efficiency of the collimating unit is improved.
The following is a fifth embodiment of a collimating optical unit according to the present utility model, unlike the first embodiment, as shown in fig. 6, a portion of the second light-emitting surface 8 near the first light-emitting surface 7 is recessed toward the light-entering portion 2, and a reflective layer is disposed on the second light-emitting surface 8, and the reflective layer disposed on the second light-emitting surface 8 is an aluminized reflective layer.
It should be noted that: the light entering the interior of the collimation unit is directly refracted to the aluminized reflecting layer of the second light-emitting surface through the interior of the collimation unit so as to achieve the aim of collimation, the aluminized reflecting layer is arranged on the second light-emitting surface 8, the situation that the light is lost due to total internal reflection of the collimation unit and direct irradiation stroke , of the light in the interior of the collimation unit after total internal reflection of the light is avoided through the arrangement of the aluminized reflecting layer, and the light is directly emitted in the air to form parallel light through reflection of the aluminized reflecting layer, so that the optical efficiency of the collimation unit is improved.
In summary, the collimating optical units are of an integrated structure, so that the effects of small volume and less space occupation are achieved, the unit main bodies 1 can be connected in parallel to form a unit group, the parallel connection mode comprises, but is not limited to, horizontal arrangement and vertical arrangement, and light patterns formed by the collimating optical units can be overlapped at the same position to form a required light pattern; the refraction surface 4 of the light inlet part 2 is used as a rotary cutting surface, so that light rays emitted by a light source can be collected to a great extent, and the light rays enter the unit main body 1 to be subjected to subsequent total reflection; the arrangement of the first total reflection surface 5 can make partial light rays totally reflected and refracted onto the first light-emitting surface 7, the arrangement of the second total reflection surface 6 can make total reflection on other light rays entering the inside of the unit main body 1, so that the light rays are emitted in parallel, the effect of converging the light rays is realized, and the purposes of collimation and improvement of the optical efficiency of the collimation optical unit are achieved.
The components selected in the application are all universal standard components or components known to the person skilled in the art, and the structure and principle of the components are all known to the person skilled in the art through technical manuals or through routine experimental methods.
In the description of embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (9)
1. A collimating optical unit, comprising:
A unit main body (1), wherein a light inlet part (2) and a light outlet part (3) are arranged on the unit main body (1), the light inlet part (2) is arranged at one side of the unit main body (1), and the light outlet part (3) is arranged on the surface opposite to the light inlet part (2);
The light incident part (2) comprises a refraction surface (4) and a first total reflection surface (5), wherein the refraction surface (4) is a rotary cutting surface taking a symmetry axis in the horizontal direction of the end surface of the light incident part (2) as a central axis and taking a curve as an outline;
The first total reflection surface (5) is a rotation surface taking a symmetry axis in the horizontal direction of the end surface provided with the light incident part (2) as a central axis and taking a curve as an outline;
The light emitting part (3) comprises a first light emitting surface (7), the first light emitting surface (7) is a cylindrical lens outer contour surface, the first light emitting surface (7) is formed by a contour line in a mode of stretching along a contour line normal direction, and the stretching direction of the first light emitting surface (7) is parallel to a symmetry axis of the unit main body (1) in the horizontal direction of the end surface of the light entering part (2);
The upper end and the lower end of the first light-emitting surface (7) respectively extend to form a second light-emitting surface (8);
a second total reflection surface (6) for converging light rays is arranged between the light inlet part (2) and the second light outlet surface (8), and the second total reflection surface (6) is a stretched curved surface.
2. A collimating optical unit as in claim 1, wherein,
The unit main body (1) is in a mirror symmetry shape.
3. A collimating optical unit as in claim 2, wherein,
The outer contour of the first light emergent surface (7) is recessed towards the direction of the light incident part (2) to form a step, and the recess is in mirror symmetry relative to a horizontal plane.
4. A collimating optical unit as in claim 3, wherein,
The part of the second light-emitting surface (8) close to the first light-emitting surface (7) is recessed towards the light-entering part (2) to form a step-shaped arrangement.
5. A collimating optical unit as in claim 3, wherein,
The part of the second light-emitting surface (8) close to the first light-emitting surface (7) is recessed towards the direction of the light-entering part (2), and a reflecting layer is arranged on the second light-emitting surface (8).
6. A collimating optical unit as in claim 5, wherein,
The reflecting layer arranged on the second light-emitting surface (8) is an aluminized reflecting layer.
7. A collimating optical unit as in any one of claims 4, 5, or 6,
The refraction surface (4), the first total reflection surface (5), the second total reflection surface (6), the first light-emitting surface (7) and the second light-emitting surface (8) are provided with optical patterns.
8. A collimating optical unit as in any one of claims 1-7,
The unit main bodies (1) are arranged along the horizontal direction to form parallel connection.
9. A collimating optical unit as in any one of claims 1-7,
The unit main bodies (1) are arranged along the vertical direction to form parallel connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322914473.XU CN220962025U (en) | 2023-10-27 | 2023-10-27 | Collimation optical unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322914473.XU CN220962025U (en) | 2023-10-27 | 2023-10-27 | Collimation optical unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220962025U true CN220962025U (en) | 2024-05-14 |
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ID=90979576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322914473.XU Active CN220962025U (en) | 2023-10-27 | 2023-10-27 | Collimation optical unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220962025U (en) |
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2023
- 2023-10-27 CN CN202322914473.XU patent/CN220962025U/en active Active
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