CN207689756U - A kind of optical fiber scanning projection device and fibre-optic scanner - Google Patents
A kind of optical fiber scanning projection device and fibre-optic scanner Download PDFInfo
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- CN207689756U CN207689756U CN201721889960.3U CN201721889960U CN207689756U CN 207689756 U CN207689756 U CN 207689756U CN 201721889960 U CN201721889960 U CN 201721889960U CN 207689756 U CN207689756 U CN 207689756U
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Abstract
The utility model discloses a kind of optical fiber scanning projection device and fibre-optic scanner, the optical fiber scanning projection device includes：Light source；Fibre-optic scanner, the fibre-optic scanner includes scanner driver and scanning optical fiber, the scanning optical fiber includes the optic fibre cantilev that scans optical fiber pigtail and can vibrate, the scanning optical fiber pigtail is connect with the light source, the optic fibre cantilev can vibrate under the driving of the scanner driver, and the light output end of the optic fibre cantilev is lens fiber.Said program can reduce the optical beam spot diameter that goes out of optical fiber scanning, improve scan image resolution ratio.
Description
Technical field
The utility model is related to optical imaging fields more particularly to a kind of optical fiber scanning projection device and optical fiber scanning to fill
It sets.
Background technology
Currently, in laser display, AR (Augmented Reality；Augmented reality)/VR (Virtual Reality；It is empty
Quasi- reality) wearable device, the fields such as two dimensional image scanning, to showing that the resolution ratio of image has increasingly higher demands.For example,
Portable laser projection display apparatus needs to realize high-resolution image quality in limited display area；AR/VR is wearable to be set
It is standby, need display device to be easily integrated, it is low in energy consumption, while display resolution is high, to closer real environment.
Due to the limitation of technology difficulty, LCD (Liquid Crystal Display；Liquid crystal display)/OLED
(Organic Light-Emitting Diode；Organic Light Emitting Diode) display pixel point be typically of size of several microns to several
Ten microns, it is difficult to realize high-resolution, and light extraction hot spot (the display pixel point for being equivalent to LCD/OLED) diameter of optical fiber scanning
About 3 to 4 microns can be reached, to reduce pixel size, for LCD/OLED, optical fiber scanning may be implemented to compare
High resolution ratio, but aforementioned laser is shown, wearable device and two dimensional image scanning etc. is for fields, optical fiber is swept at present
The resolution ratio that retouching can realize is not met by needs, and the purpose of this utility model is just to provide a kind of going out for reduction optical fiber scanning
Optical beam spot diameter, and then the method for improving scan image resolution ratio.
Utility model content
The purpose of this utility model is to provide a kind of optical fiber scanning projection device and fibre-optic scanner, for reducing optical fiber
Scanning goes out optical beam spot diameter, improves scan image resolution ratio.
In order to realize that above-mentioned purpose of utility model, the utility model first aspect provide a kind of optical fiber scanning projection device,
Including：
Light source；
Fibre-optic scanner, the fibre-optic scanner include scanner driver and scanning optical fiber, the scanning optical fiber packet
The optic fibre cantilev that includes scanning optical fiber pigtail and can vibrate, the scanning optical fiber pigtail are connect with the light source, the optical fiber
Cantilever beam can vibrate under the driving of the scanner driver, and the light output end of the optic fibre cantilev is lens fiber.
Optionally, the lens fiber is tapered lensed fiber, and the tapered lensed fiber includes tapered zone and lens.
Optionally, the lens are wedge-shaped lens, bi-curvature lens, spheric lens or GRIN Lens.
Optionally, the equipment further includes optical-fiber bundling device, and the input terminal of the optical-fiber bundling device is connect with light source, institute
The output end for stating optical-fiber bundling device is connect with the scanning optical fiber pigtail, and the input terminal of the optical-fiber bundling device is extension fibre core knot
Structure.
Optionally, the optical-fiber bundling device is fused optic fiber bundling device.
Optionally, the optical-fiber bundling device includes multiple input end, and the equipment includes multiple light sources, multiple light sources
It is corresponded with the multiple input end of the optical-fiber bundling device.
Optionally, the light source is tri- color lasing fluorescence chips of RGB or component or RGB three-color LEDs luminescence chip or group
Part.
Optionally, the light source further includes radiator structure.
Optionally, the radiator structure is specially cooling fin or refrigerator.
Optionally, the scanning optical fiber is single mode optical fiber, multimode fibre, photonic crystal fiber, doubly clad optical fiber or polarization-maintaining
Optical fiber.
The utility model second aspect provides a kind of fibre-optic scanner, including：
Scanner driver and the scanning optical fiber being fixed on the scanner driver；
The scanning optical fiber includes the optic fibre cantilev that can be vibrated under the driving of the scanner driver, the optical fiber
The light output end of cantilever beam is lens fiber.
Compared with prior art, the utility model has the advantages that：
In the scheme of the utility model embodiment, the light output end for scanning the optic fibre cantilev of optical fiber is lens fiber, phase
Than ordinary optic fibre, lens fiber can be focused the output light of optic fibre cantilev, reduce the light extraction light of optic fibre cantilev
Spot diameter, to improve the resolution ratio that scanning shows image.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, other drawings may also be obtained based on these drawings：
Fig. 1 is the structural schematic diagram for the optical fiber scanning projection device that the utility model embodiment provides；
Fig. 2 is the schematic diagram for the optical fiber scanning Projection Display that the utility model embodiment provides；
Fig. 3 is the structural schematic diagram for the lens fiber that the utility model embodiment provides；
Fig. 4 is another structural schematic diagram for the optical fiber scanning projection device that the utility model embodiment provides；
Fig. 5 is the schematic diagram for the extension core structure that the utility model embodiment provides；
Fig. 6 is the connection diagram of optical-fiber bundling device and multiple light sources that the utility model embodiment provides；
Fig. 7 A- Fig. 7 B are the structure of two kinds of possible cascade systems of the optical-fiber bundling device that the utility model embodiment provides
Schematic diagram；
Fig. 8 is a kind of structural schematic diagram for possible scanner driver that the utility model embodiment provides；
Fig. 9 is the structural schematic diagram for the alternatively possible scanner driver that the utility model embodiment provides；
Figure 10 is the structural schematic diagram for the fibre-optic scanner that the utility model embodiment provides.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
The every other embodiment obtained, shall fall within the protection scope of the present invention.
The utility model embodiment provides a kind of optical fiber scanning projection device, and as shown in FIG. 1, FIG. 1 is the utility model realities
Apply the structural schematic diagram of the optical fiber scanning projection device of example offer, wherein optical fiber scanning projection device includes light source 10；Optical fiber is swept
Imaging apparatus, the fibre-optic scanner include scanner driver 201 and scanning optical fiber 202, and the scanning optical fiber 202 includes scanning
Optical fiber pigtail 2021 and the optic fibre cantilev 2022 that can be vibrated, the scanning optical fiber pigtail 2021 are connect with the light source 10,
The optic fibre cantilev 2022 can vibrate under the driving of the scanner driver 201, the light of the optic fibre cantilev 2022
Output end is lens fiber, wherein the scanning optical fiber pigtail 2021 refers to scanning the rear end of optical fiber 202 beyond scanner driver
201 part, optic fibre cantilev 2022 refer to part of the front end beyond scanner driver 201 for scanning optical fiber 202.
As shown in Fig. 2, Fig. 2 is the schematic diagram for the optical fiber scanning Projection Display that the utility model embodiment provides, optical fiber is swept
It includes 10 (not shown) of light source, fibre-optic scanner 20 and lens group 30 to retouch projection device 1, and fibre-optic scanner 20 scans
Light after lens group 30, form image on imaging surface, l is the length of the image on imaging surface, and w is on imaging surface
The width of image, p are the pixel that scanning ray is formed on imaging surface, and the size of pixel p is smaller, the image that can be realized
Resolution ratio is higher.It therefore,, can be to the output light of optic fibre cantilev 2022 by lens fiber in the utility model embodiment
Line is focused, and reduce optic fibre cantilev 2022 goes out optical beam spot diameter, correspondingly, also reducing the pixel on imaging surface
The size of p, it is thus possible to realize higher scan image resolution ratio.For example, by taking single mode optical fiber as an example, general single mode fiber
The optical beam spot diameter that goes out be generally 3 microns to 4 microns, and when the fiber-optic output of single mode optical fiber is lens fiber, single-mode optics
It is fine to go out optical beam spot diameter and be contracted to 1 micron or even smaller, to improve scan image resolution ratio.
In the utility model embodiment, as shown in figure 3, Fig. 3 is the knot for the lens fiber that the utility model embodiment provides
The light output end of structure schematic diagram, optic fibre cantilev 2022 can form tapered zone 2024 and lens by way of end face processing
2023, wherein L be tapered zone 2024 length, lens 2023 can with wedge-shaped lens, hyperbolicity shape lens, spheric lens or
GRIN Lens etc., lens 2023 act as being focused the output light of optic fibre cantilev 2022, outstanding to reduce optical fiber
Arm beam 2022 goes out optical beam spot diameter, the length for acting as reducing equivalent optic fibre cantilev of tapered zone 2024, to increase light
The scan frequency and sweep amplitude that fine cantilever beam 2022 can reach.
Specifically, end face processing mode can be fused biconical taper technology, cold working grinding or chemical attack etc., because
This, tapered zone 2024 and lens 2023 can be integrally formed.In the utility model embodiment, by optic fibre cantilev
2022 light output end carries out end face processing, forms tapered zone 2024 and lens 2023, not will increase optic fibre cantilev 2022
Load, can reduce the length of equivalent optic fibre cantilev instead, to increase the scanning frequency that optic fibre cantilev 2022 can reach
Rate and sweep amplitude.
In the utility model embodiment, as shown in figure 4, the optical fiber scanning projection that Fig. 4, which is the utility model embodiment, to be provided
Another structural schematic diagram of equipment, the equipment further include optical-fiber bundling device 40, the input terminal and light of the optical-fiber bundling device 40
Source 10 connects, and the output end of the optical-fiber bundling device 40 is connect with the scanning optical fiber pigtail 2021.As shown in figure 5, Fig. 5 is this
The input terminal of the schematic diagram for the extension core structure that utility model embodiment provides, the optical-fiber bundling device 40 is extension fibre core knot
Structure, wherein a is the core diameter before extension, and b is the core diameter carried out after fibre core extension process, and c is the naked light with coat
Fine diameter, b>A, for example, the core diameter a before extension are generally 0.009mm or so, and the core diameter b after extension can
To reach the value of 0.080mm or bigger, those skilled in the art can select the core diameter after extension according to actual conditions, this
Details are not described herein for utility model.
In the above scheme, since the input terminal of optical-fiber bundling device 40 is using extension core structure, common fibre core is compared, is expanded
Exhibition core structure can collect more light energies, to the efficient coupled into optical fibres bundling device of the light that exports light source 10 40.
In the utility model embodiment, optical-fiber bundling device 40 may include multiple input end, corresponding scanning projection device
Multiple light sources 10, in specific implementation process, light source 10 can be rgb light source, as shown in fig. 6, Fig. 6 is implemented for the utility model
The connection diagram (scanner driver 201 is omitted in figure) for the optical-fiber bundling device and multiple light sources that example provides.Specifically, light source
10 include red light-emitting unit 101, green luminescence unit 102 and blue light emitting unit 103, by by red light-emitting unit 101,
The light combinations that green luminescence unit 102 and blue light emitting unit 103 are emitted are to together, it will be able to form the light of different colorations
Line, details are not described herein again.In specific implementation process, light source 10 be tri- color lasing fluorescence chips of RGB or component, or
RGB three-color LEDs luminescence chip or component.
Corresponding, optical-fiber bundling device 40 includes 3 input terminals, and 3 input terminals of optical-fiber bundling device 40 are sent out with feux rouges respectively
Light unit 101, green luminescence unit 102 and blue light emitting unit 103 connect, and the multiple input end of optical-fiber bundling device 40 is to expand
Core structure is opened up, the efficient coupled into optical fibres bundling device 40 of light to export light source 10, then, optical-fiber bundling device 40 will
In the combiner that red light-emitting unit 101, green luminescence unit 102 and blue light emitting unit 103 export to scanning optical fiber 202,
Further, due to the lens 2023 of the output end of optic fibre cantilev 2022, so as to reduce the light extraction of optic fibre cantilev 2022
Spot diameter improves scan image resolution ratio.
In the utility model embodiment, the type of light source 10 is not limited to rgb light source, correspondingly, optical-fiber bundling device 40
Input terminal number is also not necessarily limited to 3, and those skilled in the art can select suitable light source 10 and optical fiber to close according to actual conditions
The input terminal quantity of beam device 40, the utility model are without limitation.
In specific implementation process, according to the manufacture of optical-fiber bundling device 40, optical-fiber bundling device 40 is specifically as follows molten
Melt optical-fiber bundling device.
In specific implementation process, optical-fiber bundling device 40 can have different cascade systems, for example, it is assumed that optical fiber closes
Beam device 40 includes 3 input terminals, and 3 input terminals can be connected directly, and as shown in Figure 7 A or 3 input terminals 401 are classified phase
Even, as shown in Figure 7 B, those skilled in the art can select suitable cascade system, the utility model to exist according to actual conditions
This is repeated no more.
In the utility model embodiment, as shown in figure 4, optical fiber scanning projection device further includes fixed seat 50, optical fiber scanning
Device 20 is fixedly mounted in fixed seat 50, and the through-hole 501 that scanning optical fiber pigtail 2021 can pass through is offered in fixed seat 50,
Scanning optical fiber 202 is connect across through-hole 501 with light source 10.
Next, being illustrated to the scanner driver 201 in the utility model embodiment.As shown in figure 8, Fig. 8 is this
A kind of structural schematic diagram for possible scanner driver that utility model embodiment provides, the scanner driver 201 can be
Two-dimensional scan driver, two-dimensional scan driver may include two one-dimensional scanning drivers, respectively X-direction scanner driver
2011 and the Y-direction scanner driver 2012 vertical with X-direction, when scanner driver 201 works, X-direction scanner driver
2011 vibrate in X direction, and optic fibre cantilev 2022 is driven to vibrate in X direction, and Y-direction scanner driver 2012 is vibrated along Y-direction,
Optic fibre cantilev 2022 is driven to be vibrated along Y-direction, to realize that two-dimensional scan, wherein X-direction refer to and X-direction scanner driver
Direction vertical 2011 surface e, Y-direction refer to the direction vertical with the surface f of Y-direction scanner driver 2012.
In specific implementation process, scanner driver 201 can be piezoelectric actuator, electrostatic actuator, electromagnetic driver
Or MEMS (Micro-Electro-Mechanical System；MEMS) driver, the utility model do not limit this
System.
In specific implementation process, X-direction scanner driver 2011 and Y-direction scanner driver 2012 can pass through glue
It glues, inlay consolidation and increase the modes such as fixed structure and link together, next, with X-direction scanner driver 2011 and the side Y
To scanner driver 2012, by way of fixed structure connection for illustrate.
As shown in figure 9, Fig. 9 is the structural representation for the alternatively possible scanner driver that the utility model embodiment provides
Figure, scanner driver 201 include X-direction scanner driver 2011, Y-direction scanner driver 2012, two piece fixed structures 2013
And it is opened in the optical fiber containing groove 2014 on fixed structure 2013.X-direction is scanned by two piece fixed structures 2013 and is driven
Dynamic device 2011 is fixed 2012 on scanner driver in the Y direction, and optical fiber containing groove 2014 is offered on fixed structure 2013 so that
Scanning optical fiber 202 can be accommodated in optical fiber containing groove 2014, and then be fixed on X-direction scanner driver 2011.
In other embodiments, scanner driver 201 can also be tubular type fibre-optic scanner, be activated by four scannings
The square fibre-optic scanner of device composition, the triangle fibre-optic scanner etc. being made of three pieces scan actuator, this reality
With novel without limitation.
In the utility model embodiment, light source 10 further includes radiator structure, is caused because temperature is excessively high to avoid light source 10
The wavelength of the light of outgoing changes, and ensures the stability for the light that light source 10 is emitted.
In specific implementation process, radiator structure can be cooling fin or refrigerator, and certainly, those skilled in the art can
According to actual conditions, to select other suitable radiator structures, the utility model without limitation.
In the utility model embodiment, scanning optical fiber 202 is specifically as follows single mode optical fiber, multimode fibre, photonic crystal light
Fine, doubly clad optical fiber or polarization maintaining optical fibre etc., the technical staff belonging to this field can select suitable outgoing according to actual conditions
Optical fiber, the utility model are without limitation.
Based on same inventive concept, the utility model embodiment also provides a kind of fibre-optic scanner, as shown in Figure 10, figure
The structural schematic diagram of 10 fibre-optic scanners provided for the utility model embodiment, fibre-optic scanner include：Turntable driving
Device 601 and the scanning optical fiber 602 being fixed on the scanner driver 601；The scanning optical fiber 602 includes that can be swept described
The optic fibre cantilev 6021 vibrated under the driving of driver 601 is retouched, the optic fibre cantilev 6021 is lens fiber.
About in the various change mode and specific example previous embodiment of fibre-optic scanner it is stated that by aforementioned
To the detailed description of fibre-optic scanner, those skilled in the art are clear that fibre-optic scanner in the present embodiment
Implementation, so in order to illustrate the succinct of book, this will not be detailed here.
One or more technical solution in the utility model embodiment, at least has the following technical effect that or excellent
Point：
In the scheme of the utility model embodiment, the optic fibre cantilev for scanning optical fiber is lens fiber, compares ordinary optic fibre,
Lens fiber can be focused the output light of optic fibre cantilev, and reduce optic fibre cantilev goes out optical beam spot diameter, to
Improve the resolution ratio that scanning shows image.
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification (including any accessory claim, abstract and attached drawing), except non-specifically chatting
It states, can be replaced by other alternative features that are equivalent or have similar purpose.That is, unless specifically stated, each feature is only
It is an example in a series of equivalent or similar characteristics.
The utility model is not limited to specific implementation mode above-mentioned.The utility model expands to any in this specification
The new feature of middle disclosure or any new combination, and disclose any new method or process the step of or any new group
It closes.
Claims (10)
1. a kind of optical fiber scanning projection device, which is characterized in that including：
Light source；
Fibre-optic scanner, the fibre-optic scanner include scanner driver and scanning optical fiber, and the scanning optical fiber includes sweeping
The optic fibre cantilev retouched optical fiber pigtail and can vibrated, the scanning optical fiber pigtail are connect with the light source, the optical fiber cantilever
Beam can vibrate under the driving of the scanner driver, and the light output end of the optic fibre cantilev is lens fiber.
2. equipment as described in claim 1, which is characterized in that the lens fiber is tapered lensed fiber, and the taper is saturating
Mirror optical fiber includes tapered zone and lens.
3. equipment as claimed in claim 2, which is characterized in that the lens are that wedge-shaped lens, bi-curvature lens, spheric are saturating
Mirror or GRIN Lens.
4. equipment as described in claim 1, which is characterized in that the equipment further includes optical-fiber bundling device, the optical-fiber bundling
The input terminal of device is connect with light source, and the output end of the optical-fiber bundling device is connect with the scanning optical fiber pigtail, and the optical fiber closes
The input terminal of beam device is extension core structure.
5. equipment as claimed in claim 4, which is characterized in that the optical-fiber bundling device is fused optic fiber bundling device.
6. equipment as claimed in claim 4, which is characterized in that the optical-fiber bundling device includes multiple input end, the equipment
Including multiple light sources, the multiple input end of multiple light sources and the optical-fiber bundling device corresponds.
7. equipment as claimed in claim 6, which is characterized in that the light source be tri- color lasing fluorescence chips of RGB or component, or
Person's RGB three-color LEDs luminescence chip or component.
8. equipment as claimed in claim 7, which is characterized in that the light source further includes radiator structure.
9. equipment as claimed in claim 8, which is characterized in that the radiator structure is specially cooling fin or refrigerator.
10. a kind of fibre-optic scanner, which is characterized in that including：
Scanner driver and the scanning optical fiber being fixed on the scanner driver；
The scanning optical fiber includes the optic fibre cantilev that can be vibrated under the driving of the scanner driver, the optical fiber cantilever
The light output end of beam is lens fiber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721889960.3U CN207689756U (en) | 2017-12-28 | 2017-12-28 | A kind of optical fiber scanning projection device and fibre-optic scanner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721889960.3U CN207689756U (en) | 2017-12-28 | 2017-12-28 | A kind of optical fiber scanning projection device and fibre-optic scanner |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109212882A (en) * | 2018-11-19 | 2019-01-15 | 成都理想境界科技有限公司 | Laser projection optics module and laser projection device |
| CN110333599A (en) * | 2019-04-30 | 2019-10-15 | 成都理想境界科技有限公司 | A kind of scanning display module |
| CN110543011A (en) * | 2019-07-31 | 2019-12-06 | 成都理想境界科技有限公司 | Scanning display module and projection equipment |
| CN110873961A (en) * | 2018-08-31 | 2020-03-10 | 成都理想境界科技有限公司 | Optical fiber scanning display device, optical fiber scanning display equipment and optical fiber scanning method |
| CN111338077A (en) * | 2018-12-19 | 2020-06-26 | 成都理想境界科技有限公司 | Optical fiber scanner, optical fiber scanning system and driving method |
| WO2020192410A1 (en) * | 2019-03-26 | 2020-10-01 | 成都理想境界科技有限公司 | Optical fiber scanner and projection apparatus |
| CN112444962A (en) * | 2019-08-28 | 2021-03-05 | 成都理想境界科技有限公司 | Optical fiber structure and optical fiber scanner |
| CN112444963A (en) * | 2019-08-30 | 2021-03-05 | 成都理想境界科技有限公司 | Light source driving circuit and display module |
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- 2017-12-28 CN CN201721889960.3U patent/CN207689756U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110873961A (en) * | 2018-08-31 | 2020-03-10 | 成都理想境界科技有限公司 | Optical fiber scanning display device, optical fiber scanning display equipment and optical fiber scanning method |
| CN110873961B (en) * | 2018-08-31 | 2022-03-04 | 成都理想境界科技有限公司 | Optical fiber scanning display device, optical fiber scanning display equipment and optical fiber scanning method |
| CN109212882A (en) * | 2018-11-19 | 2019-01-15 | 成都理想境界科技有限公司 | Laser projection optics module and laser projection device |
| CN111338077A (en) * | 2018-12-19 | 2020-06-26 | 成都理想境界科技有限公司 | Optical fiber scanner, optical fiber scanning system and driving method |
| WO2020192410A1 (en) * | 2019-03-26 | 2020-10-01 | 成都理想境界科技有限公司 | Optical fiber scanner and projection apparatus |
| US11789257B2 (en) | 2019-03-26 | 2023-10-17 | Chengdu Idealsee Technology Co., Ltd. | Optical fiber, optical fiber scanner and projection apparatus |
| CN110333599A (en) * | 2019-04-30 | 2019-10-15 | 成都理想境界科技有限公司 | A kind of scanning display module |
| CN110543011A (en) * | 2019-07-31 | 2019-12-06 | 成都理想境界科技有限公司 | Scanning display module and projection equipment |
| CN112444962A (en) * | 2019-08-28 | 2021-03-05 | 成都理想境界科技有限公司 | Optical fiber structure and optical fiber scanner |
| CN112444963A (en) * | 2019-08-30 | 2021-03-05 | 成都理想境界科技有限公司 | Light source driving circuit and display module |
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