CN221378367U - Light beam converging device based on parabolic mirror - Google Patents
Light beam converging device based on parabolic mirror Download PDFInfo
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- CN221378367U CN221378367U CN202322609000.9U CN202322609000U CN221378367U CN 221378367 U CN221378367 U CN 221378367U CN 202322609000 U CN202322609000 U CN 202322609000U CN 221378367 U CN221378367 U CN 221378367U
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Abstract
The utility model discloses a light beam converging device based on a parabolic mirror, which comprises a gluing prism, a lens module and a lens module, wherein the gluing prism is provided with a light incident surface and a light emergent surface opposite to the light incident surface and is provided with a central light axis; the first laser and the second laser are arranged on the gluing prism and symmetrically distributed on two sides of the central light axis; and the parabolic mirror is positioned on the light emitting surface and is used for converging light emitted by the first laser and the second laser. According to the parabolic mirror-based light beam converging device, the first laser and the second laser can emit horizontal light on the same side through the gluing prism, after the first laser and the second laser pass through the gluing prism, the width between the light rays of the first laser and the light rays of the second laser, namely the emergent light beam interval, can be reduced, when the emergent light irradiates on the parabolic mirror, the required area of the parabolic mirror can be greatly reduced, and the light transmission caliber of the parabolic mirror is reduced.
Description
Technical Field
The utility model relates to the field of optics, in particular to a beam converging device based on a parabolic mirror.
Background
A converging beam refers to a beam of light where the cross-sectional area of the beam is continuously decreasing. In current light emitting systems, it is often implemented in such a way that light beams emitted by two different light sources are converged into the same light beam. Devices with beam condensing function are widely existing in the existing optical systems, which are the basis of optical imaging technology and play an irreplaceable role in the existing optical technology. For example, in an optical information storage system, a light beam needs to be focused on an optical storage material and a certain optical characteristic thereof is changed, and the change of the optical characteristic is resolved to realize the existence of information.
In the prior art, the first light source and the second light source have different wavelengths, and light emitted by the first light source and the second light source is firstly transmitted to the dichroic mirror after passing through one or more lenses, then coupled through the dichroic mirror, and finally converged by the one or more lenses to output mixed light. The dichroic mirror is generally a long-wavelength light transmitting long-wavelength light and reflecting short-wavelength light. However, the transition band of the transmission wavelength and the reflection wavelength of the dichroic mirror is a band, called a cut-off band, which is typically 10 to 30nm, affected by the coating itself and the process. The wavelengths in the cut-off band are partially transmitted and partially reflected. Therefore, when the wavelengths of the light emitted by the two light sources are in the cut-off band, a higher transmittance or reflectance cannot be achieved, which ultimately results in a lower light efficiency of the entire light emitting system. And the structure is complex. In addition, in the prior art, how to achieve effective focusing with a simple structure when achieving light path convergence is also a problem to be solved.
Disclosure of utility model
Based on the technical defects, the utility model provides the beam converging device based on the parabolic mirror, which reduces the emergent beam interval of the first laser and the second laser through the gluing prism, compresses the light transmission caliber of the parabolic mirror and solves the problems of complex structure and high cost in the prior art.
The utility model provides a light beam converging device based on a parabolic mirror, which comprises a gluing prism, a lens module and a lens module, wherein the gluing prism is provided with a light incident surface and a light emergent surface opposite to the light incident surface, and the lens module is provided with a central light axis; the first laser and the second laser are arranged on the gluing prism and symmetrically distributed on two sides of the central light axis; and the parabolic mirror is positioned on the light emitting surface and is used for converging light emitted by the first laser and the second laser.
In an embodiment of the present utility model, the cemented prism is a symmetrical structure along the central light axis.
In an embodiment of the present utility model, the exterior of the glued prism is shaped as a table, and has an upper bottom surface and a lower bottom surface, wherein the upper bottom surface is a light emitting surface, and the lower bottom surface is a light entering surface; the inside of the gluing prism is provided with a light reflecting surface, and the light emitted by the first laser or the second laser is emitted towards the upper bottom surface through the light reflecting surface.
In an embodiment of the present utility model, the incident light of the first laser is parallel to the outgoing light of the first laser, and the distance between the outgoing light of the first laser and the central light axis is shorter than the distance between the incident light of the first laser and the central light axis.
In an embodiment of the present utility model, an inner surface of a side surface of the glued prism is a first reflecting surface, and a second reflecting surface is further disposed inside the glued prism, and the second reflecting surface faces the first reflecting surface and is parallel to the first reflecting surface.
In an embodiment of the present utility model, an angle between the first reflecting surface and the lower bottom surface is 30 ° to 60 °.
In an embodiment of the present utility model, an angle between the first reflecting surface and the lower bottom surface is 45 °.
In an embodiment of the utility model, the focal point of the parabolic mirror is not on the central optical axis.
In an embodiment of the utility model, the parabolic mirror-based beam converging device further comprises a direction regulator, and the parabolic mirror is mounted on the direction regulator for regulating an angle of the parabolic mirror, i.e. a position of a focusing point.
In an embodiment of the utility model, the parabolic mirror-based beam converging device further includes a horizontal displacement mechanism, and the direction adjuster is mounted on the horizontal displacement mechanism, and the horizontal displacement mechanism is used for adjusting the horizontal position of the parabolic mirror.
The beneficial effects are that:
According to the parabolic mirror-based light beam converging device, the first laser and the second laser can emit horizontal light on the same side through the gluing prism, after the first laser and the second laser pass through the gluing prism, the width between the light rays of the first laser and the light rays of the second laser, namely the emergent light beam interval, can be reduced greatly when the emergent light irradiates on the parabolic mirror, the required area of the parabolic mirror can be reduced greatly, the light transmission caliber of the parabolic mirror is reduced, and the problem of complex structure and high cost in the prior art is solved.
Drawings
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
Fig. 1 is a schematic diagram of a parabolic mirror-based beam converging device according to an embodiment of the present utility model.
Wherein: 1, gluing a prism; 2a first laser; 3 a second laser; 4 parabolic mirrors;
a 100 center optical axis; 101 a light incident surface; 102 a light-emitting surface; 103 a first reflective surface; 104 a second reflective surface.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model.
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. It should be noted that, if a directional indication (such as up, down, left, right, front, and rear … …) is included in the embodiment of the present utility model, the directional indication is merely used to explain a relative positional relationship, a movement condition, and the like between the components in a specific posture (shown in the drawings), and if the specific posture is changed, the directional indication is correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
As shown in fig. 1, the present embodiment provides a beam converging device based on a parabolic mirror 4, which includes a gluing prism 1, a first laser 2, a second laser 3, and the parabolic mirror 4.
In this embodiment, the cemented prism 1 is symmetrical along the central optical axis 100. The bonding prism 1 has a light incident surface 101 and a light emergent surface 102 opposite to the light incident surface 101, and has a central light axis 100; in this embodiment, the exterior of the bonding prism 1 is in a table shape, which has an upper bottom surface and a lower bottom surface, wherein the upper bottom surface is a light-emitting surface 102, and the lower bottom surface is a light-entering surface 101; the inside of the glued prism 1 is provided with a light reflecting surface, the inner surface of the side surface of the glued prism 1 is provided with a first reflecting surface 103, the inside of the glued prism 1 is also provided with a second reflecting surface 104, and the second reflecting surface 104 faces the first reflecting surface 103 and is parallel to the first reflecting surface 103. The first reflecting surface 103 and the second reflecting surface 104 have a reflecting distance, and in some embodiments, the first reflecting surface 103 forms an angle of 30 ° to 60 ° with the lower bottom surface. The angle between the first reflecting surface 103 and the lower bottom surface is 45 °. The beam width between the emergent lights of the laser transmitters can be adjusted through the design of the included angle and the reflection distance.
The first laser 2 and the second laser 3 are both arranged on the gluing prism 1 and symmetrically distributed on two sides of the central optical axis 100; light emitted from the first laser 2 or the second laser 3 is emitted toward the upper bottom surface through the light reflection surface. The incident light of the first laser 2 is parallel to the outgoing light thereof, and the outgoing light of the first laser 2 is at a shorter distance from the central light axis 100 than the incident light of the first laser 2 is from the central light axis 100.
The parabolic mirror 4 is located on the light-emitting surface 102, and the parabolic mirror 4 is used for converging the light emitted by the first laser 2 and the second laser 3. The focal point of the parabolic mirror 4 is not on the central optical axis 100.
In some embodiments, the parabolic mirror 4 based beam converging device further comprises a direction regulator, and the parabolic mirror 4 is mounted on the direction regulator to condition an angle of the parabolic mirror 4, i.e. a position of a focusing point. The beam converging device based on the parabolic mirror 4 further comprises a horizontal displacement mechanism, and the direction regulator is arranged on the horizontal displacement mechanism and is used for regulating the horizontal position of the parabolic mirror 4. The direction regulator and the horizontal displacement mechanism can adjust the position of the focusing point of the parabolic mirror 4, the direction regulator is an existing structure, such as a universal wheel and the like, the horizontal displacement mechanism is a sliding rail structure or a cylinder adjusting structure, the main design key point of the embodiment is the design of the light path, and the structure adopted for adjusting the focusing point can be an existing means, so that the utility model is not repeated one by one.
In use, the first laser 2 emits a beam a and the second laser 3 emits a beam b. The light beam a is reflected by the first reflecting surface 103 (EF) and the second reflecting surface 104 (AB) of the gluing prism 1 to be the light beam c; the light beam b is reflected as a light beam d by the first reflecting surface 103 (MN) and the second reflecting surface 104 (AC) of the cemented prism 1. The beam c is parallel to the beam d and is converged at the point O by the parabolic mirror 4, so that the beam converging function is realized. The gluing prism 1 reduces the emergent beam interval of the first laser 2 and the second laser 3, compresses the light-transmitting caliber of the parabolic mirror 4 and reduces the cost.
The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. It should be understood by those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the present utility model, and the present utility model is not limited to the above-described embodiments.
Claims (10)
1. A parabolic mirror-based beam condensing device, comprising
The gluing prism is provided with a light incident surface and a light emergent surface opposite to the light incident surface, and is provided with a central light axis;
The first laser and the second laser are arranged on the gluing prism and symmetrically distributed on two sides of the central light axis; and
The parabolic mirror is positioned on the light emitting surface and is used for converging light emitted by the first laser and the second laser.
2. The parabolic mirror based beam converging device according to claim 1, wherein the cemented prism is a symmetrical structure along the central optical axis.
3. The parabolic mirror-based beam condensing unit according to claim 2, wherein said exterior of said cemented prism is formed in a shape of a table having an upper bottom surface and a lower bottom surface, said upper bottom surface being a light-emitting surface and said lower bottom surface being a light-entering surface; the inside of the gluing prism is provided with a light reflecting surface, and the light emitted by the first laser or the second laser is emitted towards the upper bottom surface through the light reflecting surface.
4. A parabolic mirror based beam condensing device according to claim 3 characterized by the fact that the incident light of said first laser is parallel to its outgoing light and the outgoing light of said first laser is at a shorter distance from said central light axis than the incident light of said first laser.
5. A parabolic mirror based beam converging device according to claim 3 wherein the inner surface of the side of the cemented prism is a first reflecting surface, the cemented prism further having a second reflecting surface inside, the second reflecting surface facing and being parallel to the first reflecting surface.
6. The parabolic mirror based beam converging device according to claim 5, wherein the first reflecting surface has an angle of 30 ° to 60 ° with the lower bottom surface.
7. The parabolic mirror based beam converging device according to claim 6, wherein the first reflecting surface is at an angle of 45 ° to the lower bottom surface.
8. The parabolic mirror based beam converging device according to claim 1, wherein a focal point of the parabolic mirror is not on the central optical axis.
9. The parabolic mirror-based beam converging apparatus according to claim 8, further comprising a direction regulator, the parabolic mirror being mounted on the direction regulator to condition an angle of the parabolic mirror, i.e., a position of a focus point.
10. The parabolic mirror-based beam converging apparatus according to claim 9, further comprising a horizontal displacement mechanism on which the direction adjuster is mounted, the horizontal displacement mechanism being configured to adjust a horizontal position of the parabolic mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322609000.9U CN221378367U (en) | 2023-09-26 | 2023-09-26 | Light beam converging device based on parabolic mirror |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322609000.9U CN221378367U (en) | 2023-09-26 | 2023-09-26 | Light beam converging device based on parabolic mirror |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221378367U true CN221378367U (en) | 2024-07-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322609000.9U Active CN221378367U (en) | 2023-09-26 | 2023-09-26 | Light beam converging device based on parabolic mirror |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221378367U (en) |
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2023
- 2023-09-26 CN CN202322609000.9U patent/CN221378367U/en active Active
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