CN221039758U - Laser module, optical fiber scanning display device and intelligent glasses - Google Patents
Laser module, optical fiber scanning display device and intelligent glasses Download PDFInfo
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- CN221039758U CN221039758U CN202322338890.4U CN202322338890U CN221039758U CN 221039758 U CN221039758 U CN 221039758U CN 202322338890 U CN202322338890 U CN 202322338890U CN 221039758 U CN221039758 U CN 221039758U
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- optical fiber
- laser module
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- coupling lens
- fiber
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 69
- 239000011521 glass Substances 0.000 title claims abstract description 26
- 230000008878 coupling Effects 0.000 claims abstract description 52
- 238000010168 coupling process Methods 0.000 claims abstract description 52
- 238000005859 coupling reaction Methods 0.000 claims abstract description 52
- 230000003287 optical effect Effects 0.000 claims description 23
- 239000000835 fiber Substances 0.000 claims description 12
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical group CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 claims 1
- 239000005297 pyrex Substances 0.000 claims 1
- 238000009776 industrial production Methods 0.000 abstract description 4
- 230000008859 change Effects 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 description 9
- 230000001070 adhesive effect Effects 0.000 description 9
- 238000003384 imaging method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
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- Optical Couplings Of Light Guides (AREA)
Abstract
The utility model discloses a laser module, an optical fiber scanning display device and intelligent glasses, wherein the laser module comprises a base, a plurality of lasers, a plurality of collimating lenses, a plurality of filter plates, a coupling lens and an oblique tail handle optical fiber; the lasers are arranged on the side plate of the base; the collimating lens is arranged on the end part of the laser, and the collimating lens and the corresponding laser are coaxially arranged; the plurality of filter plates and the coupling lens are arranged on the bottom plate of the base, and the plurality of filter plates are in one-to-one correspondence with the plurality of lasers; light emitted by the lasers is collimated by the collimating lens, and is coupled into the oblique tail handle optical fiber by the coupling lens after being combined by the plurality of filter plates. According to the scheme, the laser and the collimating lens are coaxially arranged, so that the position change of the lens when the temperature of the laser module is changed is avoided, the coupling efficiency of light emitted by the light source is ensured, and the industrial production requirement is met.
Description
Technical Field
The utility model relates to the field of projection display, in particular to a laser module, an optical fiber scanning display device and intelligent glasses.
Background
The intelligent glasses are the glasses which are provided with independent operating systems like intelligent mobile phones, can be provided with programs such as software, games and the like by a user, can be used for completing functions such as schedule adding, map navigation, friend interaction, photo and video shooting, video conversation and the like by voice or action control, and can be accessed through a mobile communication network.
Considering the wearing mode of the intelligent glasses, the intelligent glasses have higher requirements on volume and weight. The optical fiber scanning imaging technology has the advantage of small size of the imaging module, and the size and weight of the intelligent glasses can be greatly reduced by adopting the optical fiber scanning technology.
The imaging principle of the optical fiber scanning imaging technology is that light corresponding to each pixel point of an image to be displayed is modulated through a light source, then a scanner drives a scanning optical fiber to move at high frequency, and the light corresponding to each pixel point is scanned and output, so that the light corresponding to each pixel point of the image to be displayed is projected onto a projection screen one by one to form a projection picture.
The laser light source has the advantages of good monochromaticity, high brightness, wide color gamut and the like, is often used as a light source for optical fiber scanning imaging, and realizes image display by light combined by R, G, B three-color laser light sources. How to design the laser light source structure, the optical coupling efficiency is improved, and the industrial production requirement is met, so that the problem to be solved by the intelligent glasses is solved.
Disclosure of utility model
The utility model aims to provide a laser module, an optical fiber scanning display device and intelligent glasses, so as to ensure the coupling efficiency of light emitted by a light source and meet the industrial production requirement.
In order to achieve the above object, a first aspect of the present utility model provides a laser module, including: the device comprises a base, a plurality of lasers, a plurality of collimating lenses, a plurality of filter plates, a coupling lens and an inclined tail handle optical fiber; the lasers are arranged on the side plate of the base; the collimating lens is arranged on the end part of the laser, and the collimating lens and the corresponding laser are coaxially arranged; the plurality of filter plates and the coupling lens are arranged on the bottom plate of the base, and the plurality of filter plates are in one-to-one correspondence with the plurality of lasers; light emitted by the lasers is collimated by the collimating lens, and is coupled into the oblique tail handle optical fiber by the coupling lens after being combined by the plurality of filter plates.
Optionally, the collimating lens is fixed to the end of the laser by means of adhesion.
Optionally, the laser module includes a coupling lens pad, the coupling lens pad is fixed on the bottom plate of the base by adopting an adhesive manner, and the coupling lens is fixed on the coupling lens pad by adopting an adhesive manner.
Optionally, the material of the coupling lens gasket is heat-resistant glass.
Optionally, the coupling lens is not coaxial with the optical fiber structure axis, and the deviation between the coupling lens and the optical fiber structure axis is used for compensating the deviation between the center of the end face of the optical fiber ferrule and the optical fiber structure axis; the optical fiber core insert refers to an optical fiber core insert in the oblique tail handle optical fiber.
Optionally, a preset angle is formed between the optical fiber core-inserting axis of the oblique tail handle optical fiber and the optical fiber structure axis; and the light-emitting optical axis of the end face of the optical fiber core insert is coaxial with the optical fiber structure axis.
Optionally, the oblique tail handle optical fiber is fixed on the base in an adhesive manner.
The second aspect of the present utility model provides an optical fiber scanning display device, which comprises the laser module and the optical scanning module according to the first aspect, wherein the light emitted by the laser module is scanned out by the optical scanning module and then used as display image light; the optical scanning module comprises an actuator, wherein an optical fiber emergent end in the light source module is fixed on the actuator, the optical fiber extends beyond the actuator and forms an optical fiber cantilever, and the optical fiber cantilever is driven by the actuator to sweep in a three-dimensional space.
A third aspect of the present utility model provides an intelligent glasses, including a glasses frame body and the optical fiber scanning display device according to the second aspect, the optical scanning module is disposed in the glasses frame body, and the laser module is built in the glasses frame body or is independent from the glasses frame body.
Compared with the prior art, the utility model has the following beneficial effects:
In the scheme of the embodiment of the utility model, the collimating lens is arranged on the end part of the laser, and the laser and the collimating lens are coaxially arranged, so that the position change of the lens when the temperature of the laser module is changed is avoided, the coupling efficiency of light emitted by the light source is ensured, and the industrial production requirement is met;
And the coupling lens is arranged on the bottom plate of the base, so that the focal length of the coupling lens can be increased, and compared with a coupling lens with a small focal length, the optical path deviation increase can be reduced, and the coupling loss is reduced.
Drawings
For a clearer description of embodiments of the utility model or of solutions in the prior art, the drawings that are necessary for the description of the embodiments or of the prior art will be briefly described, it being evident that the drawings in the following description are only some embodiments of the utility model, and that other drawings can be obtained, without inventive faculty, by a person skilled in the art from these drawings:
FIG. 1 is a schematic view of a collimating lens provided in an embodiment of the present utility model disposed at an end of a laser diode;
FIG. 2 is a schematic cross-sectional view of a laser module according to an embodiment of the present utility model;
fig. 3 is a schematic diagram of optical path transmission of a laser module according to an embodiment of the present utility model;
FIG. 4 is a schematic structural view of a base according to an embodiment of the present utility model;
fig. 5 is a schematic diagram of optical path compensation of an oblique tail optical fiber according to an embodiment of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only 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.
The embodiment of the utility model provides a laser module, as shown in fig. 1 and 2, which comprises a base 10, a plurality of lasers 20, a plurality of collimating lenses 30, a plurality of filter plates 40, a coupling lens 50 and an oblique tail handle optical fiber 60; the plurality of lasers 20 are disposed on a side plate of the base 10; the collimating lens 30 is disposed on an end of the laser 20, and the collimating lens 30 is disposed coaxially with the corresponding laser 20; the plurality of filter plates 40 and the coupling lens 50 are arranged on the bottom plate of the base 10, and the plurality of filter plates 40 are in one-to-one correspondence with the plurality of lasers 20; the light emitted from the lasers 20 is collimated by the collimating lens 30, and then combined by the filters 40, and coupled into the oblique tail handle optical fiber 60 by the coupling lens 50, and the optical path transmission diagram of the laser module is shown in fig. 3.
In an embodiment of the present utility model, the laser 20 may be a laser diode, such as: the laser 20 and the base 10 may be fixed by means of a medium or low temperature solder sintering, the sintering temperature being selected between 150 and 230 c.
In the embodiment of the present utility model, the collimating lens 30 is fixed to the end of the laser 20 by means of adhesion. The collimating lens 30 is directly adhered to the laser diode, and can be fixedly supported by ultraviolet glue 301, and the collimating lens 30 and the laser diode can be separated by 3um to 10um, so that the working distance and the fixing reliability can be ensured by the fixing mode, the volume is reduced, and meanwhile, the influence of rigidity change caused by the thinning of the whole structure of the laser module on the position of the collimating lens 30 is reduced.
For the coupling lens 50, if the optical fiber ferrule of the oblique tail-shank optical fiber 60 and the coupling lens 50 are installed in the same pipe, when the structure is miniaturized, the focal length of the coupling lens 50 becomes short, and the polishing precision of the optical fiber ferrule is difficult to improve, and under the same condition of deviation of the optical fiber ferrule, the deviation of the optical path caused by the coupling lens with small focal length increases, and at the same time, the coupling loss also increases. Therefore, in the embodiment of the present utility model, the coupling lens 50 is disposed on the bottom plate of the base 10, so that the coupling lens 50 can move for a certain displacement in both the horizontal direction and the vertical direction, thereby being beneficial to compensating the light path deviation, focusing and mounting fixation caused by the fiber ferrule deviation.
As shown in fig. 4, a schematic view of the base 10 according to an embodiment of the present utility model is shown, where the base 10 includes a bottom plate 101 and four side plates 102, 103, 104 and 105, respectively, and a conduit 106.
In the embodiment of the present utility model, the laser module includes a coupling lens pad 70, the coupling lens pad 70 is fixed on the bottom plate of the base 10 by using an adhesive manner, and the coupling lens 50 is fixed on the coupling lens pad 70 by using an adhesive manner. The material of the coupling lens gasket 70 may be heat-resistant glass, and when the base 10 and the coupling lens gasket 70 are fixed, a low thermal expansion coefficient thermosetting adhesive or an ultraviolet curing adhesive may be selected for bonding, and when the coupling lens 50 and the coupling lens gasket 70 are fixed, an ultraviolet curing adhesive may be selected for bonding.
Similarly, as shown in fig. 2, the filter 40 may be fixed to the bottom plate of the base 10 by a filter spacer 80. In the embodiment of the present utility model, if the plurality of lasers 20 includes R, G, B three-color lasers, the corresponding plurality of filters 40 respectively cut off and pass the wavelengths of the R, G, B three-color lasers, so as to realize the light source beam combination.
In an embodiment of the present utility model, the oblique-tail optical fiber 60 may be fixed on the base 10 by an adhesive, and the oblique-tail optical fiber 60 is disposed in the catheter 106. As shown in fig. 5, the optical path compensation of the oblique-pigtail fiber 60 is schematically illustrated. An angle b is formed between the optical fiber structure axis (horizontal dotted line) of the oblique tail handle optical fiber 60 and the optical fiber inserting axis, the ideal end face position R of the optical fiber inserting core is arranged on the optical fiber structure axis, the end face position T after the optical fiber inserting core is actually processed is assumed to be T, the deviation P exists between the end face position T after the processing and the ideal end face position R, the center of the end face position is not arranged on the optical fiber structure axis, and the deviation is assumed to be x. Under the premise, when the coupling lens 50 is coaxial with the optical fiber structure axis, the light-emitting deviation a exists, when the ferrule deviation P is about +/-0.3mm, the caused deviation x is about 0.08mm maximum, the light-emitting deviation a is about 1.5 degrees maximum, the coupling loss is increased, and in the embodiment of the utility model, in order to compensate the processing deviation of the optical fiber ferrule position, the coupling lens 50 is moved by the deviation x, so that the light-emitting deviation is eliminated.
In the embodiment of the present utility model, the horizontal optical axis of the oblique tail optical fiber 60 and the light emitting point of the laser 20 need to be in the same plane, so as to ensure the optical coupling efficiency.
Based on the same inventive concept, the embodiment of the utility model also provides an optical fiber scanning display device, which comprises the laser module and the optical scanning module, wherein the light emitted by the laser module is scanned and output by the optical scanning module and then is used as display image light; the optical scanning module comprises an actuator, wherein an optical fiber emergent end in the light source module is fixed on the actuator, the optical fiber extends beyond the actuator and forms an optical fiber cantilever, and the optical fiber cantilever is driven by the actuator to sweep in a three-dimensional space. The optical fiber scanning display device has the advantages of small volume, convenience for integrated installation and the like, is suitable for intelligent glasses and laser projection televisions, and has very wide application.
When being applied to intelligent glasses, can with the optical scanning module set up in the picture frame main part, specifically can be on the mirror leg to realize monocular display or binocular display, the laser module that corresponds is built-in the picture frame main part or independent of the picture frame main part is outer, in order to adapt to the morphological design of different glasses.
All of the features disclosed in this specification, or all of the steps in a method or process disclosed, may be combined in any combination, except for mutually exclusive features and/or steps.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. That is, each feature is one example only of a generic series of equivalent or similar features, unless expressly stated otherwise.
The utility model is not limited to the specific embodiments described above. The utility model extends to any novel one, or any novel combination, of the features disclosed in this specification, as well as to any novel one, or any novel combination, of the steps of the method or process disclosed.
Claims (9)
1. A laser module, comprising: the device comprises a base, a plurality of lasers, a plurality of collimating lenses, a plurality of filter plates, a coupling lens and an inclined tail handle optical fiber; the lasers are arranged on the side plate of the base; the collimating lens is arranged on the end part of the laser, and the collimating lens and the corresponding laser are coaxially arranged; the plurality of filter plates and the coupling lens are arranged on the bottom plate of the base, and the plurality of filter plates are in one-to-one correspondence with the plurality of lasers; light emitted by the lasers is collimated by the collimating lens, and is coupled into the oblique tail handle optical fiber by the coupling lens after being combined by the plurality of filter plates.
2. The laser module of claim 1, wherein the collimating lens is adhesively secured to the end of the laser.
3. The laser module of claim 1, wherein the laser module includes a coupling lens spacer adhesively secured to the base plate of the base, the coupling lens adhesively secured to the coupling lens spacer.
4. The laser module of claim 2, wherein the material of the coupling lens spacer is pyrex.
5. The laser module of claim 1, wherein the coupling lens is not coaxial with the fiber structure axis, and wherein a deviation between the coupling lens and the fiber structure axis is used to compensate for a deviation between an end face center of the fiber stub and the fiber structure axis; the optical fiber core insert refers to an optical fiber core insert in the oblique tail handle optical fiber.
6. The laser module of claim 1, wherein a predetermined angle is provided between the fiber ferrule axis and the fiber structure axis of the oblique pigtail fiber, and the light-emitting optical axis of the fiber ferrule end face is coaxial with the fiber structure axis.
7. The laser module of claim 1, wherein the oblique-pigtail fiber is adhesively secured to the base.
8. An optical fiber scanning display device, characterized by comprising the laser module and the optical scanning module according to any one of claims 1-7, wherein the light emitted by the laser module is scanned out by the optical scanning module and then used as display image light; the optical scanning module comprises an actuator, wherein an optical fiber emitting end in the laser module is fixed on the actuator, the optical fiber extends beyond the actuator and forms an optical fiber cantilever, and the optical fiber cantilever is driven by the actuator to sweep in a three-dimensional space.
9. An intelligent glasses, comprising a glasses frame body and the optical fiber scanning display device as claimed in claim 8, wherein the optical scanning module is arranged in the glasses frame body, and the laser module is arranged in the glasses frame body or is independent from the outside of the glasses frame body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322338890.4U CN221039758U (en) | 2023-08-30 | 2023-08-30 | Laser module, optical fiber scanning display device and intelligent glasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322338890.4U CN221039758U (en) | 2023-08-30 | 2023-08-30 | Laser module, optical fiber scanning display device and intelligent glasses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221039758U true CN221039758U (en) | 2024-05-28 |
Family
ID=91133384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322338890.4U Active CN221039758U (en) | 2023-08-30 | 2023-08-30 | Laser module, optical fiber scanning display device and intelligent glasses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221039758U (en) |
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2023
- 2023-08-30 CN CN202322338890.4U patent/CN221039758U/en active Active
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