CN205787405U - A kind of device eliminating laser speckle - Google Patents
A kind of device eliminating laser speckle Download PDFInfo
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- CN205787405U CN205787405U CN201620465605.2U CN201620465605U CN205787405U CN 205787405 U CN205787405 U CN 205787405U CN 201620465605 U CN201620465605 U CN 201620465605U CN 205787405 U CN205787405 U CN 205787405U
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- laser
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- speckle
- laser speckle
- fibre
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Abstract
The utility model proposes a kind of device eliminating laser speckle, structure is simple and clear, realize low cost.This device includes many input optical fibres and output optical fibre；One end of described many input optical fibres forms the fiber waveguide of elongated taper entirely through the attenuation process of molten fibre, the tapered end welding of output optical fibre and this fiber waveguide.This utility model has good dissipation speckle effect, and structure is simple and clear, technique simple, low cost, and reliability is high；Whole device volume is little, and power upgrading space is big；Input is the most flexible, it is simple to mate multiple input pattern and object；Infrared monitoring, laser-projector etc. can be widely used in.
Description
Technical field
This utility model relates to a kind of device weakening and even eliminating laser speckle.
Background technology
Semiconductor laser has compact, lightweight, electro-optical efficiency is high, reliability is high and the longevity
The advantages such as life is long, at laser display, security device, have the most excellent in the sector application such as night vision illumination
Gesture.When the industry such as laser display, night vision illumination uses, its Output of laser speckle degree is had the highest wanting
Ask, if speckle is too serious, display resolution can be directly affected.Mainly there is two categories below
The method eliminating laser speckle:
1) multiple-beam synthesis method is used.Chinese patent CN104777626A discloses a kind of suppression laser
The device of speckle, uses the mode of many optical fiber boundling to suppress laser speckle, and this device utilizes physics to close Shu Fang
Method reduces the coherence of laser itself, although can have inhibition to laser speckle, but in reality
The inhibition reached in application also has gap away from ideal effect；
2) rotation array mirror or device shaking way is used to realize, such as rotating ground glass sheet, multifaceted prism
Or sieve aperture, but the method cost is high, it is complicated to realize device, and therefore practical application is very limited.
Therefore selecting a kind of device simple, low cost, structure easily realizes and speckle eradicating efficacy is good
Method is extremely important for dissipation speckle.
Utility model content
The utility model proposes a kind of new device eliminating laser speckle, structure is simple and clear, realize low cost.
The technical solution of the utility model is as follows:
A kind of device eliminating laser speckle, including many input optical fibres and output optical fibre；Described many defeated
Enter one end of optical fiber and form the fiber waveguide of elongated taper entirely through the attenuation process of molten fibre, output optical fibre with
The tapered end welding of this fiber waveguide.
The incident light source of above-mentioned many input optical fibres can be the laser such as semiconductor laser or optical fiber laser
Light source.It is specifically as follows many single tubes fiber coupled laser diode, or many bar optical fiber couple semiconductor
Laser instrument or the direct output laser of optical fiber；Accordingly, the other end of many input optical fibres can be made to scatter,
So as the adaptive installation of diverse location.
According to different application demands, it is also possible to arrange optical shaping mirror on the light direction of output optical fibre
Group.
Preferably one single-core fiber of output optical fibre.
A kind of method preparing said apparatus, comprises the following steps:
(1) many input optical fibre physical bindings are formed fibre bundle；
(2) by the attenuation process of molten fibre, fibre bundle one end entirety is drawn and attenuated, form the light wave of elongated taper
Lead；
(3) by the tapered end welding of output optical fibre Yu the fiber waveguide of described elongated taper.
Technique effect of the present utility model is as follows:
1, having good dissipation speckle effect, and structure is simple and clear, technique simple, low cost, reliability is high.
2, whole device volume is little, and power upgrading space is big.
3, input is the most flexible, it is simple to mate multiple input pattern and object.
4, infrared monitoring, laser-projector etc. can be widely used in.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of this utility model preparation process.
Fig. 2, Fig. 3, Fig. 4 are three embodiments of the present utility model.
Detailed description of the invention
This utility model has carried out dual dissipation speckle: weakens, eliminate " spatial coherence ".Specifically,
First pass through multiple single optical fiber and carry out physics conjunction bundle, tentatively reduce the coherence of laser itself, so
After again by the attenuation process of molten fibre, be equivalent to every optical fiber and all have passed through an elongated taper fiber waveguide,
Light is homogenized further, is finally reached extraordinary dissipation speckle effect.
As it is shown in figure 1, (1) uses first by multifiber physical binder bind bundle, (2) draw and attenuate through entirety
Forming one section of pyramidal structure after technique, (3) tapered end is fused to simple optical fiber output.
Embodiment 1 is as in figure 2 it is shown, be three-in-one direct output.
Embodiment 2 is as it is shown on figure 3, be that seven unifications directly export.
Embodiment 3 as shown in Figure 4, adds shaping lens group output for three-in-one, and wherein shaping lens group can
To need design to determine according to different application.
Claims (5)
1. the device eliminating laser speckle, it is characterised in that: include many input optical fibres and output light
Fine；One end of described many input optical fibres forms the light wave of elongated taper entirely through the attenuation process of molten fibre
Lead, output optical fibre and the tapered end welding of this fiber waveguide.
The device of elimination laser speckle the most according to claim 1, it is characterised in that: described many
The incident light source of input optical fibre is semiconductor laser or optical fiber laser.
The device of elimination laser speckle the most according to claim 2, it is characterised in that: described partly lead
Body laser is many single tubes fiber coupled laser diode, or many bar optical-fiber coupling semiconductor laser
Device.
The device of elimination laser speckle the most according to claim 1, it is characterised in that: described output
Optical shaping mirror group it is additionally provided with on the light direction of optical fiber.
The device of elimination laser speckle the most according to claim 1, it is characterised in that: described output
Optical fiber is a single-core fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620465605.2U CN205787405U (en) | 2016-05-19 | 2016-05-19 | A kind of device eliminating laser speckle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620465605.2U CN205787405U (en) | 2016-05-19 | 2016-05-19 | A kind of device eliminating laser speckle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205787405U true CN205787405U (en) | 2016-12-07 |
Family
ID=58116805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620465605.2U Active CN205787405U (en) | 2016-05-19 | 2016-05-19 | A kind of device eliminating laser speckle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205787405U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105824130A (en) * | 2016-05-19 | 2016-08-03 | 西安域视光电科技有限公司 | Device for eliminating laser speckles and preparation method thereof |
| CN107154574A (en) * | 2017-06-23 | 2017-09-12 | 深圳市阿集比光电科技有限公司 | Laser system and LIFI devices |
-
2016
- 2016-05-19 CN CN201620465605.2U patent/CN205787405U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105824130A (en) * | 2016-05-19 | 2016-08-03 | 西安域视光电科技有限公司 | Device for eliminating laser speckles and preparation method thereof |
| CN107154574A (en) * | 2017-06-23 | 2017-09-12 | 深圳市阿集比光电科技有限公司 | Laser system and LIFI devices |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230714 Address after: 710077 Xi'an hi tech Zone 56, Xi'an, Shaanxi Province, No. 56 Patentee after: Focuslight Technologies Inc. Address before: 710077 Shaanxi High Power Semiconductor Laser Industrial Park, No. 56 Zhang 86 Road, Xi'an High-tech Zone, Shaanxi Province Patentee before: XI'AN YUSHI PHOTOELECTRIC SCIENCE & TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right |