CN209167712U - A kind of laser homogenizing device - Google Patents
A kind of laser homogenizing device Download PDFInfo
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- CN209167712U CN209167712U CN201920050581.8U CN201920050581U CN209167712U CN 209167712 U CN209167712 U CN 209167712U CN 201920050581 U CN201920050581 U CN 201920050581U CN 209167712 U CN209167712 U CN 209167712U
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- micro lens
- surface micro
- homogenizing device
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Abstract
Laser homogenizing device provided by the utility model, the surface of the laser homogenizing device is made of multiple surface micro lens, the bore of any one surface micro lens is polygon, the number of edges of the polygon is randomly provided, the position of the central point of any one surface micro lens is randomly provided, the position of the bore edge crossing point of any one surface micro lens is random, and the surface micro lens close-packed arrays of adjacent bore, due to laser homogenizing device provided by the utility model, each surface micro lens are in shape, bore number of edges, aperture center position, bore marginal position is random distribution, therefore in laser light incident, its interference is also random, the interference phenomenon of light and shade variation is not formed in far field, to overcome the interference problem in the even light of traditional periodical microlens array.
Description
Technical field
The utility model relates to field of optical device technology, in particular to a kind of laser homogenizing device.
Background technique
Laser homogenizing device laser lighting, laser television, laser medicine, 3D imaging, in terms of with very
It is widely applied.There are mainly two types of modes for current laser homogenizing: first is that the geometry of the microlens array using periodic arrangement
Homogenising system；Second is that homogenizing structure using the diffraction of binary steps formula to realize.Periodicity of the microlens array due to its structure
By force, under laser irradiation, strong interference effect is generated because it is periodical, form very strong interference enhancing in far field or is weakened
Region, seriously affect and homogenize effect；Binary steps formula diffraction structure is led since its zero level energy is to step depth quite sensitive
Cause zero level be difficult to eliminate, especially homogenize hot spot angle it is larger when, Zero-order diffractive generate Qiang Guanghui be significantly larger than other regions,
Therefore application is limited.
Utility model content
Have in view of that, it is necessary in view of the defects existing in the prior art, one kind be provided and overcome traditional period lenticule geometry
Laser homogenizing and binary diffraction homogenize the laser homogenizing device of the limitation of structure.
To achieve the above object, the utility model adopts the following technical solutions:
The surface of a kind of laser homogenizing device, the laser homogenizing device is made of multiple surface micro lens, any one song
The bore of face lenticule is polygon, and the number of edges of the polygon is randomly provided, the central point of any one surface micro lens
Position be randomly provided, the position of the bore edge crossing point of any one surface micro lens is random, and the song of adjacent bore
Face lenticule close-packed arrays.
In some preferred embodiments, the material of the laser homogenizing device is optical plastic or optical glass.
In some preferred embodiments, the shape of each surface micro lens in the laser homogenizing device is different.
In some preferred embodiments, two adjacent polygons share a line.
In some preferred embodiments, the surface micro lens include that convex surface micro lens and concave Iy curved are micro-
Mirror.
The utility model by adopting the above technical scheme the advantages of be:
The surface of laser homogenizing device provided by the utility model, the laser homogenizing device is made of multiple surface micro lens,
The bore of any one surface micro lens is polygon, and the number of edges of the polygon is randomly provided, and any one curved surface is micro-
The position of the central point of lens is randomly provided, and the position of the bore edge crossing point of any one surface micro lens is random, and
The surface micro lens close-packed arrays of adjacent bore, due to laser homogenizing device provided by the utility model, each surface micro lens exist
Shape, bore number of edges, aperture center position, bore marginal position are random distributions, therefore it is interfered in laser light incident
It is also at random, not form the interference phenomenon of light and shade variation in far field, to overcome the even light of traditional periodical microlens array
In interference problem.
Further, since laser homogenizing device provided by the utility model, by the gradient of each surface micro lens to laser
Phase is modulated, therefore zero level energy is insensitive to the absolute depth of sub-lens, and the apparent zero order light of capacity volume variance is not present
Spot overcomes the Zero-order diffractive phenomenon in traditional binary diffraction homogenizer, homogenizes hot spot more evenly.
Detailed description of the invention
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, in the premise not made the creative labor
Under, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the random distribution feelings of the surface micro lens central point of laser homogenizing device provided by the embodiment of the utility model
Condition；
Fig. 2 is the bore edge random distribution feelings of the surface micro lens of laser homogenizing device provided by the embodiment of the utility model
Condition；
Fig. 3 is the three-dimensional structure pattern of concave Iy curved lenticule provided by the embodiment of the utility model；
Fig. 4 is the three-dimensional structure pattern of convex surface micro lens provided by the embodiment of the utility model；
Fig. 5 is the far field optical output field distribution example of concave Iy curved structure provided by the embodiment of the utility model；
Fig. 6 is the far field optical output field distribution example of convex curved-surface structure provided by the embodiment of the utility model.
Specific embodiment
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 making creative work
All other embodiment obtained, fall within the protection scope of the utility model.
The utility model provides a kind of laser homogenizing device, and the surface of the laser homogenizing device is by multiple surface micro lens structures
At the bore of any one surface micro lens is polygon, and the number of edges of the polygon is randomly provided, any one curved surface
The position of the central point of lenticule is randomly provided, and the position of the bore edge crossing point of any one surface micro lens is random,
And the surface micro lens close-packed arrays of adjacent bore.
It is appreciated that each surface micro lens are in shape, bore side due to laser homogenizing device provided by the utility model
Number, aperture center position, bore marginal position are random distributions, thus in laser light incident its interference be also it is random,
The interference phenomenon of light and shade variation is not formed in far field, so that the interference overcome in the even light of traditional periodical microlens array is asked
Topic.
In some preferred embodiments, the material of the laser homogenizing device is optical plastic or optical glass.
In some preferred embodiments, the shape of each surface micro lens in the laser homogenizing device is different.
In some preferred embodiments, the polygon where two compact arranged surface micro lens shares one
Side.
In some preferred embodiments, the surface micro lens include that convex surface micro lens and concave Iy curved are micro-
Mirror.
It is appreciated that the far-field spot size of the laser homogenizing device is true by the caliber size and rise of surface micro lens
Fixed, the optical field distribution uniformity of the far-field spot of the laser homogenizing device is determined by the face type shape of surface micro lens.
It is appreciated that laser homogenizing device provided by the utility model, the face type of each surface micro lens is curved surface, is passed through
The gradient of curved surface is modulated laser phase, therefore zero level energy is insensitive to the absolute depth of sub-lens, and energy is not present
The apparent zero level hot spot of difference, overcomes the Zero-order diffractive phenomenon in traditional binary diffraction homogenizer, homogenizes hot spot more evenly.
The technical solution of the utility model is described in detail below in conjunction with specific embodiment.
Embodiment 1:
In the present embodiment, laser homogenizing device is optics UV plastics, and the central point of the surface micro lens of laser homogenizing device is full
Foot random distribution shown in FIG. 1；The distribution at the surface micro lens bore edge of laser homogenizing device meets random point shown in Fig. 2
Cloth, wherein the number of edges of each rim of the mouth diameter is not fixed, the edge shape of each rim of the mouth diameter is all different, and two neighboring rim of the mouth diameter is close
Arrangement shares a line, and the average calibre in the structure level direction is 47 microns, and the average calibre of vertical direction is 35 microns；
The tri-dimensional facial type of the surface micro lens of laser homogenizing device is distributed as shown in figure 3, being recess inside each surface micro lens bore
Continuous curve surface lens, the size of each rim of the mouth diameter is random；In the case where the parallel laser that wavelength is 940nm is incident, the light uniforming device is 1
Even hot spot at rice is as shown in figure 5, the interference situation that the hot spot is integrally distributed close to rectangle, no zero level and light and shade, interior lights
It is evenly distributed.
Embodiment 2:
In the present embodiment, laser homogenizing device is optical glass；The central point of the surface micro lens of laser homogenizing device is random
Distribution；The surface micro lens bore edge random distribution of laser homogenizing device, the number of edges of each rim of the mouth diameter are not fixed, each rim of the mouth diameter
Edge shape be all different, two neighboring rim of the mouth diameter close-packed arrays, share a line, surface micro lens bore horizontal direction
Average calibre is 20 microns, and the average calibre of vertical direction is 30 microns；In each surface micro lens bore of laser homogenizing device
Portion is continuous curve surface face type as shown in Figure 4；In the case where the parallel laser that wavelength is 650nm is incident, the laser homogenizing device is at 1 meter
Homogenize hot spot as shown in fig. 6, even hot spot is integrally close to rectangle, the interference situation of no zero level and light and shade distribution, interior lights point
Cloth is uniform.
The laser homogenizing device of certain the utility model can also have a variety of transformation and remodeling, it is not limited to above-mentioned embodiment party
The specific structure of formula.In short, the protection scope of the utility model should include that those show to those skilled in the art
And the transformation or substitution that are clear to and remodeling.
Claims (5)
1. a kind of laser homogenizing device, which is characterized in that the surface of the laser homogenizing device is made of multiple surface micro lens, arbitrarily
The bore of one surface micro lens is polygon, and the number of edges of the polygon is randomly provided, any one surface micro lens
The position of central point be randomly provided, the position of the bore edge crossing point of any one surface micro lens is random and adjacent
The surface micro lens close-packed arrays of bore.
2. laser homogenizing device as described in claim 1, which is characterized in that the material of the laser homogenizing device be optical plastic or
Optical glass.
3. laser homogenizing device as described in claim 1, which is characterized in that each surface micro lens in the laser homogenizing device
Shape it is different.
4. laser homogenizing device as described in claim 1, which is characterized in that two adjacent polygons share a line.
5. laser homogenizing device as described in claim 1, which is characterized in that the surface micro lens include convex surface micro lens
With concave Iy curved lenticule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920050581.8U CN209167712U (en) | 2019-01-11 | 2019-01-11 | A kind of laser homogenizing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920050581.8U CN209167712U (en) | 2019-01-11 | 2019-01-11 | A kind of laser homogenizing device |
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| CN209167712U true CN209167712U (en) | 2019-07-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112394524A (en) * | 2019-08-19 | 2021-02-23 | 上海鲲游光电科技有限公司 | Dodging element, manufacturing method and system thereof and electronic device |
-
2019
- 2019-01-11 CN CN201920050581.8U patent/CN209167712U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112394524A (en) * | 2019-08-19 | 2021-02-23 | 上海鲲游光电科技有限公司 | Dodging element, manufacturing method and system thereof and electronic device |
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