CN207114901U - Light-beam forming unit - Google Patents
Light-beam forming unit Download PDFInfo
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- CN207114901U CN207114901U CN201720713128.1U CN201720713128U CN207114901U CN 207114901 U CN207114901 U CN 207114901U CN 201720713128 U CN201720713128 U CN 201720713128U CN 207114901 U CN207114901 U CN 207114901U
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Abstract
The utility model provides a kind of light-beam forming unit, including light source, successively away from light source and the first lens array being arranged on the emitting light path of light source, the second lens array, beam shaping, beam-focuser and the first optical fiber, light source includes the semiconductor laser that multiple arrays are set, first lens array includes the first lens that multiple arrays are set, face is corresponding one by one with semiconductor laser for first lens, second lens include the second lens that multiple arrays are set, and face is corresponding one by one with the first lens for the second lens；Light source is located at the front focal plane of the first lens array, and the back focal plane of the first lens array overlaps with the front focal plane of the second lens array.First lens array collimates to light of the light source on quick shaft direction, second lens array collimates to light of the light source on slow-axis direction, by being collimated to light of the light source on slow-axis direction, reduce because the diverging on slow-axis direction is lost caused by side, so as to improve shaping efficiency.
Description
Technical field
It the utility model is related to semiconductor laser field, more particularly to a kind of light-beam forming unit.
Background technology
Semiconductor laser with its small volume, in light weight, voltage is low, power is big the features such as be widely used in the first optical fiber
Communication, photoelectricity are integrated, the detection of optical disc storage, pump light source, atmospheric environment, the analysis of trace toxic gas and Molecular Spectroscopy etc. with
The closely bound up numerous areas of human lives.However, semiconductor laser is existed due to its special operation principle, its beam quality
It is vertical and horizontal to be differed greatly in the both direction of P-N junction, the direction perpendicular to P-N junction is generally called quick shaft direction, put down
Row is referred to as slow-axis direction in the direction of P-N junction.Beam divergence angle on quick shaft direction is big, the beam divergence angle on slow-axis direction
It is small.Just because of the beam quality in the two directions pole lack of uniformity make semiconductor laser when applying it is relatively difficult, in reality
Border application (such as fiber coupling) when need to its light beam carry out shaping, formed small core diameter, small value aperture high brightness optical fiber
Coupling semiconductor laser exports.If only the beam shaping system using common microlens array collimation hot spot will be caused straight
Footpath is smaller, the angle of divergence is larger, operating distance is shorter, and light beam is not fully utilized, moreover, the light energy losses in transmitting procedure
More, beam quality is bad.
Utility model content
In order to solve the above problems, the utility model proposes a kind of light-beam forming unit, can avoid laser in shaping
The loss and loss of energy in journey, improve beam quality and shaping efficiency.
The utility model proposes concrete technical scheme be：A kind of light-beam forming unit, the light-beam forming unit are provided
Including light source, successively away from the light source and the first lens array being arranged on the emitting light path of the light source, the second lens
Array, beam shaping, beam-focuser and the first optical fiber, the light source include the semiconductor laser that multiple arrays are set,
First lens array includes the first lens that multiple arrays are set, and first lens and the semiconductor laser are one by one
Face is corresponding, and second lens include the second lens that multiple arrays are set, second lens and first lens one
One face is corresponding；The light source is located at the front focal plane of first lens array, the back focal plane of first lens array
Overlapped with the front focal plane of second lens array.
Further, the beam shaping includes being arranged at the light beam on the emitting light path away from the light source successively
Split component, light beam rearrangement component and balanced component.
Further, the light beam segmentation component includes at least two parallelogram arranged in a straight line in the first direction
Plate, mutually stagger in a second direction per the two neighboring parallelogram plate, the first direction and the second direction
Vertically, the first direction, the second direction are vertical with the emitting light path.
Further, the light beam rearrangement component includes prism array, and the prism array is included along the second direction
Multiple prisms arranged in a straight line, the incidence surface of the multiple prism is parallel with the exiting surface of the parallelogram plate, the rib
The number of mirror is equal to the product of the number of the parallelogram plate and the number of the semiconductor laser.
Further, the balanced component includes the first right-angle prism and the second right-angle prism, first right-angle prism
Incidence surface it is parallel with the exiting surface of the multiple prism.
Further, the beam-focuser include successively away from the light source and be arranged on the emitting light path the
Three lens, diaphragm, the 4th lens and the 5th lens.
Further, the 3rd lens are concavees lens, and the 4th lens and the 5th lens are convex lens, institute
State the front focal plane that diaphragm is located at the 4th lens.
Further, the light-beam forming unit also includes the wave filter being arranged on the emitting light path, the filtering
Device is between the beam-focuser and first optical fiber.
Further, the wave filter includes capillary, photomask and the second optical fiber, and the photomask is covered in the hair
Tubule towards the light source and away from the light source while, second optical fiber is along the emitting light path through described
Photomask and the capillary.
Further, the light-beam forming unit also includes the light being arranged between the wave filter and first optical fiber
Beam collimator.
Further, the beam collimator include successively away from the light source and be arranged on the emitting light path the
Six lens, the 7th lens, the wave filter are located at the front focal plane of the 6th lens, and the 6th lens are located at the described 7th
The front focal plane of lens.
Light-beam forming unit provided by the utility model includes the first lens array, the second lens array, beam shaping
And beam-focuser, first lens array collimate to light of the light source on quick shaft direction, second lens
Array collimates to light of the light source on slow-axis direction, accurate by being carried out to light of the light source on slow-axis direction
Directly, reduce because the diverging on slow-axis direction is lost caused by side, so as to improve shaping efficiency.
Brief description of the drawings
The following description carried out in conjunction with the accompanying drawings, above and other aspect of embodiment of the present utility model, feature and
Advantage will become clearer, in accompanying drawing：
Fig. 1 is the structural representation of light-beam forming unit；
Fig. 2 is the structural representation that light beam splits component and light beam rearrangement component；
Fig. 3 is the top view of beam shaping；
Fig. 4 is the structural representation of beam-focuser；
Fig. 5 is the structural representation of wave filter.
Embodiment
Hereinafter, with reference to the accompanying drawings to embodiment of the present utility model is described in detail.However, it is possible in many different forms
To implement the utility model, and the utility model should not be construed as limited to the specific embodiment that illustrates here.On the contrary,
It is in order to explain principle and its practical application of the present utility model, so that the other technologies people of this area to provide these embodiments
Member is it will be appreciated that various embodiments of the present utility model and the various modifications for being suitable for specific intended application.
Reference picture 1, the light-beam forming unit that the present embodiment provides is including light source 1, successively away from light source 1 and is arranged at light source
The first lens array 2, the second lens array 3, beam shaping 4, light beam on 1 emitting light path (x directions in such as Fig. 1) gather
The burnt optical fiber 6 of device 5 and first.Light source 1 includes the semiconductor laser 11 that multiple arrays are set, and the first lens array 2 includes multiple
The first lens 21 that array is set, face is corresponding one by one with semiconductor laser 11 for the first lens 21.Second lens 3 include more
The second lens 31 that individual array is set, face is corresponding one by one with the first lens 21 for the second lens 31.Light source 1 is located at the first lens array
The front focal plane of row 2, the back focal plane of the first lens array 2 overlap with the front focal plane of the second lens array 3.
The front focal plane of the first lens array 2 refers to being located at the first lens array 2 towards the one of light source 1 in the present embodiment
Side and the plane for being equal to the focal length of the first lens 21 with the distance of the first lens array 2, conversely, rear Jiao of the first lens array 2
Plane refers to deviating from the side of light source 1 positioned at the first lens array 2 and is equal to the first lens with the distance of the first lens array 2
The plane of 21 focal length, similarly, the front focal plane of the second lens array 3 refer to being located at the second lens array 3 towards light source 1
Side and be equal to the plane of the focal length of the second lens 31 with the distance of the second lens array 3.
First lens 21 and the second lens 31 are cylindrical lens, light of first lens 21 to light source 1 on quick shaft direction
Shu Jinhang is collimated, and the second lens 31 collimate to light beam of the light source 1 on slow-axis direction.The size and second of first lens 21
The size of lens 31 is different, it is preferred that the first lens 21 are that lenticule is micro-cylindrical lens.
The light beam that light source 1 is sent incides the first lens array 2, and the first lens array 2 is to light source 1 on quick shaft direction
Light beam is collimated, and the light beam after the first lens array 2 collimation is incided on the second lens array 3, the second lens array 3
Light beam of the light source 1 on slow-axis direction is collimated, the light beam after the second lens array 3 collimation is whole by light beam successively
It is coupled into after shape device 4, beam-focuser 5 in first optical fiber 6.Wherein, the light beam progress that beam shaping 4 is used for after collimation
Segmentation and rearrangement, beam-focuser 5 are used to be focused the light beam after rearrangement and the light beam coupling after focusing is entered into the first light
In fibre 6.The first optical fiber 6 in the present embodiment is multimode fibre, for transmitting multi-mode laser.
Reference picture 2, beam shaping 4 include successively away from light source 1 be arranged on emitting light path light beam segmentation component 41,
Light beam rearrangement component 42 and balanced component 43.Light beam segmentation component 41 is used for the light beam after the second lens array 3 collimation
Split, light beam rearrangement component 42 is used to enter rearrangement, balanced component to the light beam after light beam segmentation component 41 is split
43 are used to be adjusted the angle of divergence of the light beam after rearrangement.
Light beam segmentation component 41 in the present embodiment includes arranged in a straight line at least in the first direction (y directions in such as Fig. 1)
Two parallel four side plates 10, mutually stagger in second direction (z directions in such as Fig. 1) per two neighboring parallelogram plate 10,
First direction is mutually perpendicular to second direction and first direction, second direction are vertical with emitting light path.Wherein, parallelogram
Angle between adjacent two hypotenuse in two faces of plate 10 along the y-axis direction is equal to 45 °.The lens array of parallelogram plate 10 and second
The face of the face of row 3 is its incidence surface, is its exiting surface away from the face of the second lens array 3.
Light beam rearrangement component 42 includes prism array, wherein, prism array is included in a second direction (z directions in such as Fig. 1)
Multiple prisms 20 arranged in a straight line, the number of prism 20 are equal to the number of parallelogram plate 10 and of semiconductor laser 11
Several products, it is corresponding with a semiconductor laser 11 in light source 1 respectively per two neighboring prism 20.Wherein, prism 20 with
The face of the face of parallelogram plate 10 is its incidence surface, and the incidence surface of prism 20 is parallel with the exiting surface of parallelogram plate 10.
In the present embodiment, the exiting surface of prism 20 and its exiting surface are the same face, i.e. the incidence surface of prism 20 is the light extraction of prism 20
Face.
In the present embodiment so that light beam segmentation component 41 includes two parallel four side plates 10 as an example, two parallel four side plates 10 exist
Mutually stagger on the direction of emitting light path, the beam orthogonal that each semiconductor laser 11 is launched incide two it is parallel
Two light beams are divided on four side plates 10 and by two parallel four side plates 10, two light beams incide in prism array with being somebody's turn to do respectively
Corresponding to semiconductor laser 11 on two neighboring prism 20.Wherein, the offset of two light beams after segmentation is only dependent upon two
Individual parallel four side plate 10 is the distance mutually to stagger on z directions in second direction, and two parallel four sides are controlled so as to pass through
Plate 10 is accurately controlled second direction is the distance that mutually staggers on z directions to the offset of the light beam after segmentation,
Simplify assembly technology.Certainly, light beam segmentation component 41 can also include more parallel four side plates 10, and it is saturating that it will pass through second
The quantity of the light beam obtained after light beam segmentation after the collimation of lens array 3 is equal with the quantity of parallel four side plate 10.
For example, light source 1 includes 4 semiconductor lasers 11, first laser is followed successively by from top to down according to z directions in Fig. 1
Device, second laser, the 3rd laser, the 4th laser, then prism array include 8 prisms, according to z directions in Fig. 1 from upper
The first prism, the second prism, prism, the 4th prism, pentaprism, the 6th prism, the 7th prism, the 8th are followed successively by under and
Prism, the light beam of first laser device outgoing are divided into two beams by two parallel four side plates 10, a branch of to incide the first prism, it is a branch of enter
It is mapped to the second prism；The light beam of second laser outgoing is divided into two beams by two parallel four side plates 10, a branch of to incide Rhizoma Sparganii
Mirror, it is a branch of to incide the 4th prism, the like, 8 light beams after prism array are rearranged.Above-named 4
Individual semiconductor laser is set in a row in the z-direction, when light source 1 includes 8 semiconductor lasers and is set in the z-direction in two row
Put, each corresponding 4 semiconductor lasers of row, the light beam of 4 semiconductor lasers outgoing of each row is by two parallel four sides
Plate 10 is divided into 8 beams, and 16 light beams are always obtained, and this 16 light beams is rearranged after prism array.
Reference picture 3, balanced component 43 include the first right-angle prism 43a and the second right-angle prism 43b, the first right-angle prism
43a incidence surface is parallel with the exiting surface of multiple prisms 20.
First right-angle prism 43a incidence surface refers to a face in orthogonal two faces, the first right-angle prism
43a exiting surface refers to being less than with the angle in other two faces 90 ° of face.Light beam after prism array is reset is from multiple
The exiting surface of prism 20 is emitted simultaneously to be impinged perpendicularly in the first right-angle prism 43a from the first right-angle prism 43a incidence surface, the
It is emitted after being reflected in one right-angle prism 43a from the first right-angle prism 43a exiting surface.
From the light beam that the first right-angle prism 43a exiting surface is emitted from the second right-angle prism 43b incidence surface vertical incidence
Into the second right-angle prism 43b, go out after being reflected in the second right-angle prism 43b from the second right-angle prism 43b exiting surface
Penetrate.Second right-angle prism 43b incidence surface refers to a face in orthogonal two faces, the second right-angle prism 43b's
Exiting surface refers to being less than with the angle in other two faces 90 ° of face.The light beam being emitted from the second right-angle prism 43b exiting surface
Direction it is identical with the direction of the light beam from the outgoing of the exiting surfaces of multiple prisms 20, go out from the second right-angle prism 43b exiting surface
The angle of divergence for the light beam penetrated is different from the angle of divergence of the light beam of the exiting surface outgoing from multiple prisms 20, therefore, straight by first
Angle prism 43a and the second right-angle prism 43b can adjust the angle of divergence of the light beam after resetting.In the present embodiment, the first right-angled edge
Mirror 43a and the second right-angle prism 43b sizes are identical.In other embodiments, the first right angle can be adjusted according to being actually needed
Prism 43a, the second right-angle prism 43b angles are less than the angle between 90 ° of two faces to obtain the required angle of divergence, also may be used
To adjust the position of outgoing beam by adjusting the first right-angle prism 43a, the second right-angle prism 43b size or position.When
So, the balanced component 43 in the present embodiment can also include more right-angle prisms, not limit here.
Reference picture 4, beam-focuser 5 are included successively away from light source 1 and the 3rd lens 51, the light that are arranged on emitting light path
Late 52, the 4th lens 53 and the 5th lens 54.3rd lens 51 are concavees lens, and the 4th lens 53 and the 5th lens 54 are convex
Lens, diaphragm 52 are located at the front focal plane of the 4th lens 53.The front focal plane of 4th lens 53 refers to being located at the 4th lens 53
It is equal to the plane of the focal length of the 4th lens 53 towards the side of diaphragm 52 and with the distances of the 4th lens 53.
Light beam after the rearrangement of light beam rearrangement component 42 is incided on the 3rd lens 51, and the 3rd lens 51 are used to adjust light
The angle of divergence of beam, the light beam after the 3rd lens 51 are incided on diaphragm 52, and diaphragm 52 is used for the big of the hot spot for adjusting light beam
Small, the light beam after diaphragm 52 is collimated by the 4th lens 53, and the light beam after collimation is focused by the 5th lens 54 again.
Reference picture 5, the light-beam forming unit in the present embodiment also include the wave filter 7 being arranged on emitting light path, filtering
Device 7 is located between the optical fiber 6 of beam-focuser 5 and first.Wave filter 7 includes capillary 71, the optical fiber 73 of photomask 72 and second.Hide
Light film 72 be covered in capillary 71 towards light source 1 and away from light source 1 while, the second optical fiber 73 passes through along emitting light path
Wear photomask 72 and capillary 71.Wherein, photomask 72 is made up of opaque colloid or black organic material.Wherein,
Two optical fiber 73 are multimode fibre.
Light beam after the focusing of the 5th lens 54 is incided on wave filter 7, wherein, incide on photomask 72 i.e. partially
Light beam from the second optical fiber 73 is blocked by photomask 72, and the light beam being only coupled in the second optical fiber 73 could be from the second optical fiber 73
Middle outgoing.
Light-beam forming unit also includes the beam collimator 8 being arranged between the optical fiber 6 of wave filter 7 and first.Beam collimation
Device 8 is included successively away from light source 1 and the 6th lens 81, the 7th lens 82 that are arranged on emitting light path, and wave filter 7 is positioned at the
The front focal plane of six lens 81, the 6th lens 81 are located at the front focal plane of the 7th lens 82.The front focal plane of 6th lens 81 refers to
Be the focal length for being equal to the 6th lens 81 positioned at the 6th lens 81 towards the side of wave filter 7 and with the distances of the 6th lens 81
Plane.The front focal plane of 7th lens 82 refer to positioned at the 7th lens 82 towards the side of the 6th lens 81 and with the 7th lens
82 distance is equal to the plane of the focal length of the 7th lens 82.
The light beam that device 7 is emitted after filtering is incided on the 6th lens 81, and the 6th lens 81 are used to adjust incident beam
The angle of divergence, the light beam after the 6th lens 81 are incided on the 7th lens 82, and the 7th lens 82 are used for incident thereon
Light beam is collimated and is entered the light beam coupling after collimation in the first optical fiber 6.
The present embodiment is collimated by the first lens array 2 to light of the light source 1 on quick shaft direction, passes through the second lens
Array 3 collimates to light of the light source 1 on slow-axis direction, so as to reduce because the diverging on slow-axis direction is drawn on side
The loss risen, improves shaping efficiency.Split and reset by the light beam after the collimation of beam shaping 4, pass through control
Two parallel four side plates 10 are that the distance mutually to stagger on z directions to carry out the offset of the light beam after segmentation in second direction
It is accurately controlled, simplifies assembly technology；Secondary tune can be carried out to the angle of divergence of the light beam after rearrangement by balanced component 43
It is whole.Light beam after restructuring is focused into by a hot spot by beam-focuser 5 and incides wave filter 7, due to being hidden in wave filter 7
The presence of light film 72, the wide part for deviateing the second optical fiber 73 are blocked, by the after the 6th lens 81 adjust its angle of divergence
After seven lens 82 collimation, for circular multi-mode laser, this multi-mode laser, light energy losses are smaller, and light distribution is uniform, avoid
The loss and loss of energy of the laser in reforming process, improve beam quality and shaping efficiency.
Described above is only the embodiment of the application, it is noted that for the ordinary skill people of the art
For member, on the premise of the application principle is not departed from, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as the protection domain of the application.
Claims (11)
1. a kind of light-beam forming unit, it is characterised in that including light source, successively away from the light source and be arranged at the light source
The first lens array, the second lens array, beam shaping, beam-focuser and the first optical fiber on emitting light path, the light
Source includes the semiconductor laser that multiple arrays are set, and first lens array includes the first lens that multiple arrays are set,
Face is corresponding one by one with the semiconductor laser for first lens, and second lens include second that multiple arrays are set
Lens, face is corresponding one by one with first lens for second lens；Before the light source is located at first lens array
Focal plane, the back focal plane of first lens array overlap with the front focal plane of second lens array.
2. light-beam forming unit according to claim 1, it is characterised in that the beam shaping is included successively away from institute
State light beam segmentation component, light beam rearrangement component and balanced component that light source is arranged on the emitting light path.
3. light-beam forming unit according to claim 2, it is characterised in that the light beam segmentation component is included along first party
It is mutually wrong in a second direction per the two neighboring parallelogram plate at least two parallelogram plates arranged in a straight line
Open, the first direction is vertical with the second direction, and the first direction, the second direction are hung down with the emitting light path
Directly.
4. light-beam forming unit according to claim 3, it is characterised in that the light beam rearrangement component includes prism battle array
Row, the prism array are included along the second direction multiple prisms arranged in a straight line, the incidence surface of the multiple prism and institute
State that the exiting surface of parallelogram plate is parallel, the number that the number of the prism is equal to the parallelogram plate is partly led with described
The product of the number of body laser.
5. light-beam forming unit according to claim 4, it is characterised in that the balanced component includes the first right-angle prism
It is parallel with the exiting surface of the multiple prism with the second right-angle prism, the incidence surface of first right-angle prism.
6. light-beam forming unit according to claim 1, it is characterised in that the beam-focuser is included successively away from institute
The 3rd lens, diaphragm, the 4th lens and the 5th lens stated light source and be arranged on the emitting light path.
7. light-beam forming unit according to claim 6, it is characterised in that the 3rd lens are concavees lens, described
Four lens and the 5th lens are convex lens, and the diaphragm is located at the front focal plane of the 4th lens.
8. according to the light-beam forming unit described in claim any one of 1-7, it is characterised in that also include being arranged at the outgoing
Wave filter in light path, the wave filter is between the beam-focuser and first optical fiber.
9. light-beam forming unit according to claim 8, it is characterised in that the wave filter includes capillary, photomask
And second optical fiber, the photomask be covered in the capillary towards the light source and away from the light source while,
Second optical fiber runs through the photomask and the capillary along the emitting light path.
10. light-beam forming unit according to claim 8, it is characterised in that also include being arranged at the wave filter and institute
State the beam collimator between the first optical fiber.
11. light-beam forming unit according to claim 10, it is characterised in that the beam collimator includes remote successively
The light source and the 6th lens, the 7th lens being arranged on the emitting light path, the wave filter are located at the 6th lens
Front focal plane, the 6th lens are located at the front focal plane of the 7th lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720713128.1U CN207114901U (en) | 2017-06-19 | 2017-06-19 | Light-beam forming unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720713128.1U CN207114901U (en) | 2017-06-19 | 2017-06-19 | Light-beam forming unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207114901U true CN207114901U (en) | 2018-03-16 |
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ID=61589350
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720713128.1U Expired - Fee Related CN207114901U (en) | 2017-06-19 | 2017-06-19 | Light-beam forming unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111381379A (en) * | 2018-12-29 | 2020-07-07 | Tcl集团股份有限公司 | Beam shaping device and projection equipment |
| CN112683937A (en) * | 2019-10-18 | 2021-04-20 | 北航（四川）西部国际创新港科技有限公司 | Multi-source ray integration device |
| CN112683937B (en) * | 2019-10-18 | 2024-05-10 | 北航（四川）西部国际创新港科技有限公司 | Multisource ray integration device |
-
2017
- 2017-06-19 CN CN201720713128.1U patent/CN207114901U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111381379A (en) * | 2018-12-29 | 2020-07-07 | Tcl集团股份有限公司 | Beam shaping device and projection equipment |
| CN112683937A (en) * | 2019-10-18 | 2021-04-20 | 北航（四川）西部国际创新港科技有限公司 | Multi-source ray integration device |
| CN112683937B (en) * | 2019-10-18 | 2024-05-10 | 北航（四川）西部国际创新港科技有限公司 | Multisource ray integration device |
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