CN106486883A - Light-emitting device - Google Patents
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- CN106486883A CN106486883A CN201510541179.6A CN201510541179A CN106486883A CN 106486883 A CN106486883 A CN 106486883A CN 201510541179 A CN201510541179 A CN 201510541179A CN 106486883 A CN106486883 A CN 106486883A
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Abstract
The present invention provides a kind of light-emitting device, including laser light source module and diffraction optics module.This laser light source module is in order to produce a laser beam, and this laser beam assumes first laser beam pattern under a horizontal mode or a multiple transverse mode.This diffraction optics module is arranged at the front of this laser light source module or the corresponding orientation being subjected to this laser beam incidence, in order to accept the irradiation of this laser beam, this diffraction optics module has first structure pattern, this first structure pattern corresponds to this first laser beam pattern, produces, in order to make this laser beam form diffraction, the first structure pattern beam assuming first structure light chart case.Thus, the present invention can improve the setting situation of suitable existing diffraction optical element of cannot arranging in pairs or groups with the LASER Light Source of horizontal mode or the running of multiple transverse mode.
Description
Technical field
The present invention with regard to light-emitting device, especially with respect to a kind of luminous dress with corresponding diffraction optics module
Put.
Background technology
Laser (Light Amplification by Stimulated Emission of Radiation, abbreviation Laser)
Or claim radium-shine be a kind of by exciting radiation produced amplify and reinforcement light, its have luminous exitance little,
The characteristics such as same tone, monochromaticity and high brightness (intensity), thus often apply such as accurate industry, medical treatment,
In materials processing, communication, remote control, remote measurement, full figure photography, national defence or other related optical and electronics industry.
In general, the generation of laser needs there is three kinds of important documents, including active medium (or exciting source), gain
Medium and resonant cavity.And laser instrument can be divided into by liquid, gas and solid etc. three according to the medium producing laser
Kind, wherein common gas laser such as helium neon laser (He-Ne laser), and common quasiconductor swashs
Light device or laser diode then one kind for solid state laser.
For the distribution of amplitudes (or intensity is to beam profile) of preferable laser beam, its distribution scenario is in
Reveal Gauss (Gaussian) profile shape as shown in Figure 1 and its laser beam pattern.In fact, being subject to one
As laser instrument internal structure material is uneven or the impact of tiny dust, the intensity of laser beam is except Gauss
The partly outer of distribution may also contain the noise corresponding to contrast spatially, and this noise is spatial frequency
(spatial frequency) A.C. signal in a jumble or for relatively high frequency, can be by low pass filter (low
Pass filer) setting filtered, thus obtain not Noise ideal Gaussian distribution waveform.This is preferable
Gauss distribution is the D.C. signal (i.e. spatial frequency ω is 0) without any signal, or can be described as 0 rank (Zero
Order) item or D.C. item, and its laser beam pattern will focus on the circle of centre similar to an intensity
Light (depending on the shape of institute's resonant cavity, is defined as numbering the mode (mode) of (00) in this).
And the application of general laser beam be to produce specific structure light shape pattern, for example specific point
Shape, wire, striped or array structure, are or to arrange related diffraction light again in plug-in mode in laser instrument
Learn element (Diffractive Optical Elements, abbreviation DOE) to be adjusted with the shape to laser beam
With change.
Refer to Fig. 2A, be a laser instrument with a diffraction optical element (DOE) 11 of prior art
The side schematic view of 100 inner working.As illustrated, this diffraction optical element (DOE) 11 is arranged at
On the one side 121 of one substrate 12 and be located at a LASER Light Source 10 front.This substrate 12 is with transparent material
Material is made, and a laser beam 10a produced by this LASER Light Source 10 then can be again via collimating lens 14
Adjustment and produce parallel collimated beam 10b.Due to having on this diffraction optical element (DOE) 11
Have specific micro structure (micro-structure) so that light beam this micro structure when passing through can control therein
The diffraction of light beam, and then produce the structure needed for can be projected to specific range or showing in particular space
The structure plan light beam 13 of light chart case.
For the operation of the diffraction optical element of laser diode, described diffraction optical element has to energy
Effectively cover this laser beam or this collimated beam distribution in the plane vertically travelling direction,
So that the diffraction of its light beam can occur effectively.Refer to Fig. 2 B, be at this diffraction optical element (DOE)
The distribution patterns of two kinds on 11 possible micro structures 110 are illustrated.As illustrated, its micro structure 110 is respectively
For circular and rectangle, it is mainly designed to depending on being configured the laser beam field pattern using, also can be on demand
And it is designed to other shapes of pattern.
Additionally, Fig. 2 C and Fig. 2 D to be then other two kinds being made according to the setting concept of Fig. 2A existing swashs
The side schematic view of the inner working of light device 101,102.Its difference is, by this diffraction light in Fig. 2 C
Learn element (DOE) 11 to be arranged on the another side 122 of this substrate 12；And be then only to make in Fig. 2 D
With a LASER Light Source 10, collimating lens of not arranging in pairs or groups are so as to produced laser beam 10a directly presents a little
The transmitting of light source.The set-up mode of this two figure will with Fig. 2A have same or analogous structure light shape pattern 13,
132 present.Furthermore, it is understood that the set-up mode of Fig. 2A, Fig. 2 C and Fig. 2 D is made change combination collocation
Similar or close result can be produced；One diffraction optical element is for example respectively provided with the two sides of substrate 12
(DOE), or with a point source diffraction optical element (DOE) on another side for the collocation or collocation point
Two diffraction optical elements (DOE) not on two side faces.
From the above, if diffraction optical element fails effectively to cover the distribution of laser beam or collimated beam,
For with its light beam for the LASER Light Source of Gauss distribution kenel, the structure light shape pattern finally being projected will be in
Now the D.C. item (i.e. circular light) of part and specific application purpose cannot be reached.Furthermore, when used
(such as laser diode, its light source characteristic can be same tone (coherence) or the part people having the same aspiration and interest to LASER Light Source
Property (partial coherence)) more toward high power operate when, resonance intracavity gain (gain) benefit can not
Increase so that its laser beam pattern will not be presented with circular light (i.e. Gauss distribution kenel) disconnectedly, and
It is to present horizontal mode (transverse mode) or multiple transverse mode (multi-transverse mode),
Basic mode with respect to Gauss distribution；Such as multiple modalities shown in Fig. 3 A or Fig. 3 B.
Described horizontal mode or multiple transverse mode are laser beam in the plane of its direct of travel
The specific electromagnetic field pattern being measured.Simply its differentiation is made with the shape of resonant cavity, if its resonant cavity is circle
During cylindricality, produced multiple horizontal mode are as shown in Figure 3A；If its resonant cavity is rectangle, produced
Multiple horizontal mode are as shown in Figure 3 B.
For the pattern of the numbering (01*) (or may be defined as circular mode the 01*th) in Fig. 3 A, its
For a kind of loop configuration (or can be described as a doughnut pattern (donut pattern)), that is, locate at its center
Present the distribution of a hole and unglazed shape.Please referring also to Fig. 4, the beam pattern (circle for this loop configuration
Shape mode the 01*th) distribution of amplitudes (or intensity is to beam profile) schematic diagram.Understand as shown in this two figure,
Corresponding to the hole part of the centre of its circular pattern, its intensity is a relative low value；And correspond to its ring
Shape pattern itself, its intensity is then a relatively high value.
Although the laser application requirement of many uses the LASER Light Source of Gauss distribution kenel, that is, transmitting case
(circular light of the numbering (00) in such as Fig. 1, may be defined as all relatively small laser beam with diameter
Basic mode), but because its intensity focuses on centre, making the collocation of diffraction optical element (DOE) to produce
Bear specific structure light shape pattern application when, must avoid using such light beam；Namely should be used it
D.C. the less light beam of item.And the use of beam pattern is being horizontal mode or the LASER Light Source of multiple transverse mode
When it is possible to use the less light beam of D.C. item (intensity is not focused on centre)；If but being swashed with such
During radiant collocation typically existing diffraction optical element (DOE), because micro structure thereon cannot effectively be controlled
The diffractive situations of light beam processed, can not access required structure light shape pattern on the contrary.
Therefore how to solve this prior art problem to become the main object of the present invention.
Content of the invention
The technical problem to be solved in the present invention is, for deficiencies of the prior art, provides one kind
Light-emitting device, according to using the laser beam pattern of laser light source module arrange in pairs or groups corresponding diffraction optics
Module, in particular for LASER Light Source under horizontal mode or multiple transverse mode for the running such that it is able to change
The kind LASER Light Source with horizontal mode or the running of multiple transverse mode cannot be arranged in pairs or groups suitable existing diffraction optics unit
The setting situation of part.
The technical solution adopted for the present invention to solve the technical problems is to provide a kind of light-emitting device, including laser
Light source module and diffraction optics module.This laser light source module is in order to produce a laser beam, and this laser
Light beam assumes first laser beam pattern under a horizontal mode or a multiple transverse mode.This diffraction optics mould
Block is arranged at the front of this laser light source module or the corresponding orientation being subjected to this laser beam incidence, in order to
Accept the irradiation of this laser beam, this diffraction optics module has first structure pattern, this first structure pattern
Corresponding to this first laser beam pattern, produce and assume the first knot in order to make this laser beam form diffraction
The first structure pattern beam of structure light chart case.
It is preferred that this laser light source module is semiconductor light emitting light source or laser diode, and this illuminating source
Present same tone or part same tone, or, this illuminating source is by nonlinear optical crystal or liquid
To produce the light source of different-waveband or frequency spectrum.
It is preferred that this first laser beam pattern is in loop configuration, or this first laser beam pattern
The distribution of a hole and unglazed shape is presented at centre.
It is preferred that the corresponding effective total height (or gross thickness) of this light-emitting device is in 10 millimeters (mm).
It is preferred that this diffraction optics module includes substrate and the first diffraction optical element (DOE), this substrate
There is first side and second side, this substrate is with made by transparent material；This first diffraction optical element
Be arranged in this first side, this first diffraction optical element has multiple first micro structures, and partial or
Whole the plurality of first micro structures constitutes this first structure pattern, and the plurality of first micro structure present right
Claim distribution or asymmetric distribution.
It is preferred that the position that this first laser beam pattern is presented on this first diffraction optical element corresponds to
The position of this first structure pattern, and this first laser beam pattern is presented on this first diffraction optical element
Area be less than or equal to this first structure pattern area.
It is preferred that this diffraction optics module also includes the second diffraction optical element, this second diffraction optical element
It is arranged in this second side, this second diffraction optical element has multiple second micro structures, and the plurality of
Two micro structures constitute the second structure plans, produce and are in order to make this first structure pattern beam form diffraction
Second structure plan light beam of existing second structure light shape pattern；Wherein this second structure plan is same as or different
In this first structure pattern.
It is preferred that the position that this first structure light chart case is presented on this second diffraction optical element corresponds to
The position of this second structure plan, and this first structure light chart case is presented on this second diffraction optical element
Area be less than or equal to this second structure plan area.
It is preferred that this first laser beam pattern being presented is changed over one via adjustment by this laser beam
Second laser beam pattern.
It is preferred that partial the plurality of first micro structure constitutes the 3rd structure plan, and the 3rd structure plan
Correspond to this second laser beam pattern, produce and assume the 3rd in order to make this laser beam form diffraction
3rd structure plan light beam of structure light shape pattern.
It is preferred that the position that this second laser beam pattern is presented on this first diffraction optical element corresponds to
The position of the 3rd structure plan, and this second laser beam pattern is presented on this first diffraction optical element
Area be less than or equal to the 3rd structure plan area.
It is preferred that this laser light source module includes at least one LASER Light Source, and this first laser beam pattern
Change is to complete via the operating modes adjusting this at least one LASER Light Source.
It is preferred that this laser light source module includes optical glass group, and the change of this first laser beam pattern
It is to complete via the relative distance adjusting between this optical glass group and this diffraction optics module.
It is preferred that this light-emitting device also includes housing, in order to house this laser light source module and this diffraction optics
Module.
The present invention also provides a kind of light-emitting device, and it includes laser light source module, collimation optics and spreads out
Penetrate optical module.This laser light source module is in order to produce a laser beam, and this laser beam is in a horizontal mould
First laser beam pattern is assumed under state or a multiple transverse mode.This collimation optics is arranged at this laser
The front of light source module, produces a collimated beam in order to adjust this laser beam.This diffraction optics module
It is arranged at the front of this collimation optics, in order to accept the irradiation of this collimated beam, this diffraction optics module
There is first structure pattern, this first structure pattern corresponds to this first laser beam pattern, in order to make this standard
Collimated optical beam forms diffraction and produces the first structure pattern beam assuming first structure light chart case.
Light-emitting device of the present invention, mainly according to using the laser beam pattern of laser light source module take
Join corresponding diffraction optics module, so that this kind of configuration can be applied effectively, in particular for running
LASER Light Source under horizontal mode or multiple transverse mode.So, except can more preferably utilize diffractive technology
And produce outside required structure light shape pattern, with the laser light of horizontal mode or the running of multiple transverse mode
Cannot the arrange in pairs or groups setting situation of suitable existing diffraction optical element of source is also improved.
More preferably understand to have to the above and other aspect of the present invention, preferred embodiment cited below particularly, and
Cooperation institute accompanying drawings, are described below in detail.
Brief description
Fig. 1 is the distribution of amplitudes of laser beam and its laser beam pattern of Gauss distribution kenel.
Fig. 2A is the inner working of a laser instrument 100 with a diffraction optical element 11 of prior art
Side schematic view.
Fig. 2 B is that the distribution patterns of two kinds of possible micro structures 110 on this diffraction optical element 11 are illustrated
Figure.
Fig. 2 C and Fig. 2 D be made according to the setting concept of Fig. 2A other two kinds existing laser instrument 101,
The side schematic view of 102 inner working.
Fig. 3 A and Fig. 3 B is the laser beam pattern in horizontal mode or multiple transverse mode for the laser beam.
Fig. 4 is the distribution of amplitudes schematic diagram of the beam pattern (circular mode the 01*th) of loop configuration.
Fig. 5 is the function block schematic diagram of a light-emitting device provided by the present invention.
Fig. 6 A is the side schematic view of the inner working in first embodiment for the light-emitting device of the present invention.
Fig. 6 B is the schematic diagram of the first diffraction optical element in Fig. 6 A and its first structure pattern.
Fig. 7 is the side schematic view of the inner working in second embodiment for the light-emitting device of the present invention.
Fig. 8 A is the side schematic view of the inner working in 3rd embodiment for the light-emitting device of the present invention.
Fig. 8 B is the schematic diagram of the first diffraction optical element in Fig. 8 A and its 3rd structure plan.
Fig. 9 is the side schematic view of the inner working in fourth embodiment for the light-emitting device of the present invention.
Specific embodiment
Embodiment set forth below is described in detail, and embodiment, only in order to illustrate as example, can't limit
The scope that the present invention to be protected.Additionally, the schema in embodiment eliminates unnecessary element, clearly to show
Show the technical characterstic of the present invention.It is noted that among each embodiment related or unit that function is close
Part is to be defined with similar element number and illustrate.
Refer to Fig. 5, be the function block schematic diagram of a light-emitting device 2 provided by the present invention.As illustrated,
This light-emitting device 2 includes a housing 200, a laser light source module 20, a diffraction optics module 201 and
One operation module 202.This laser light source module 20 and this diffraction optics module 201 are placed in this housing 200
In, and this operation module 202 is then arranged on this housing 200 to provide user to oppose this LASER Light Source mould
The associative operation of the unlatching running, closing running or adjustment operating modes (operation mode) of block 20 controls.
The outward appearance of this light-emitting device 2 may be designed to elongated or column construction or other form, so as user hold or
Fingers ring set is worn, or even the effectively integrating of integrated model, and this housing 200 or this light-emitting device 2
Overall effective total height (or gross thickness) can design in the size less than 10 millimeters (mm), to have
Effect is integrated in handheld apparatus etc..On actual manufacture, this laser light source module 20 and this diffraction optics mould
Block 201 is fixedly installed in this housing 200, and one end of this housing 200 is transparent or hollow out, so that being produced
Raw light beam can project and go out；And this operation module 202 is then electrically connected to this laser light source module 20, in order to
Transmission control signal.
Now make the enforcement explanation of the present invention with a first embodiment.Refer to Fig. 6 A, for this light-emitting device 2 in
The side schematic view of the inner working of first embodiment.As illustrated, this laser light source module 20 is in order to produce
One laser beam 20a, and be to be explained with the transmitting of point source in this embodiment, that is, produced should
Laser beam 20a does not arrange in pairs or groups collimating lens.One of principal character of the present invention is this laser light source module 20
It is to be operated with of a relatively high power so that produced this laser beam 20a is in a horizontal mode
Under (transverse mode) or multiple transverse mode (multi-transverse mode), that is, this laser
The laser beam pattern that light beam 20a is presented is non-basic mode (Gauss distribution), but can present as now
There are one of multiple modalities shown in Fig. 3 A or Fig. 3 B of technology.
In first embodiment, the first laser beam pattern that this laser beam 20a is presented is with existing
The pattern numbering (01*) (or may be defined as circular mode the 01*th) in Fig. 3 A of technology explains.It is
With, this first laser beam pattern is a loop configuration (or can be described as a doughnut pattern (donut pattern)),
Or the centre in this first laser beam pattern presents the distribution of a hole and unglazed shape.Additionally, should
Laser light source module 20 can include at least one LASER Light Source, and the LASER Light Source being used can be sent out for semiconductor
Radiant or a laser diode, and this illuminating source can present same tone (coherence) or partly same
Tonality (partial coherence).In other embodiment, also can be in addition again by nonlinear optical crystal
Or liquid (or other materials) is to produce the light of different-waveband (wavelength) or frequency spectrum (spectrum)
Source.
This diffraction optics module 201 is arranged at the front of this laser light source module 20 or corresponding acceptable this swashs
The incident orientation of light light beam 20a, in order to accept the irradiation of this laser beam 20a, and in this embodiment, should
Diffraction optics module 201 has a first structure pattern P 1 (see Fig. 6 B).Specifically, this diffraction optics
Module 201 includes a substrate 22 and one first diffraction optical element 21, and this substrate 22 has one first side
Face 221 and a second side 222, and this first diffraction optical element 21 in this embodiment is disposed in proximity to
In this first side 221 of this laser light source module 20.This substrate 22 is with made by a transparent material,
So that associated beam can be by projecting.And this first structure pattern P 1 is then formed at this first diffraction optics unit
On part 21.
Refer to Fig. 6 B, for the schematic diagram of this first diffraction optical element 21 and this first structure pattern P 1.
It is another feature that the first structure pattern P 1 on this set first diffraction optical element 21
Need and this first laser beam pattern mutually corresponds to so that light beam can be effectively formed diffraction when passing through.
Specifically, this light-emitting device 2 is arranging this laser light source module 20 therein and this diffraction optics module 201
When, need first this laser beam 20a produced by laser light source module 20 to be tested to learn what it was presented
Beam pattern why；Namely first understand that its pattern is belonging under horizontal mode or multiple transverse mode which
Plant pattern, to design the first structure pattern P 1 on this first diffraction optical element 21 afterwards more accordingly.
From the above, as shown in Figure 6B, this first diffraction optical element 21 is formed with multiple first micro-
Structure 210.In this embodiment, this first laser beam pattern is set to circular mode the 01*th, because
And the distribution pattern of those the first micro structures 210 just distribution pattern (the i.e. light according to this circular mode the 01*th
Shape or the place of intensity distributions) design；Namely this first diffraction is formed at the pattern of a loop configuration
On optical element 21.In this embodiment, be to be made up of those whole first micro structures 210 this first
Structure plan P1.
For further, during for enabling this laser beam 20a to be radiated on this first diffraction optical element 21
Form effective diffraction, be to make this first laser beam pattern be presented on this first diffraction optics in setting
Position on element 21 corresponds to the position of this first structure pattern P 1, and makes this first laser beam pattern
The area being presented on this first diffraction optical element 21 is less than or equal to the area of this first structure pattern P 1；
Namely the distribution of this first structure pattern P 1 can will cover the distribution model of this first laser beam pattern effectively
Enclose, and do not cause any part of this first laser beam pattern to exceed or fall within this first structure pattern P 1
Scope outside.
According to setting as above so that it may make this laser beam 20a formed effectively diffraction and produce and assume one
One first structure pattern beam 23 of first structure light chart case, as shown in Figure 6A.
The distribution pattern of those the first micro structures 210 in the first embodiment is to present symmetrical work
Illustrate, and this be produced laser beam pattern also be symmetrical (upper with the central authorities of beam pattern
Under, the comparison on left and right or the direction such as oblique) when design.However, in the case that some are possible, example
Impact of as uneven in device internal structure material or tiny dust etc., even be when LASER Light Source transports work
When rate is higher, produced laser beam pattern can't be as the perfect symmetry of each mode in Fig. 3 A or Fig. 3 B；
Contrary, produced laser beam pattern may be presented in asymmetric mode, or is wherein several moulds
The mixed type of state.Therefore, can be according to the asymmetric sample of this first laser beam pattern in other embodiment
Formula and to design its micro structure be asymmetric pattern accordingly.
The present invention also can make other changes according to this first embodiment.For example, can by this first
Diffraction optical element 21 changes and is arranged in this second side 222.Because this substrate 22 is transparent, therefore institute
The diffraction patterns producing or its structure light shape pattern will no special differences.Or, presented this
Under conditions of the area of one laser beam pattern is less than the area of this first structure pattern P 1, set those
The scope of the first micro structure or quantity can be greater or more than designs shown in fig. 6b；Namely laser beam
Place that pattern shines is it is necessary to have micro structure, but the place having micro structure can not be shone by laser beam pattern
Arrive.Under here one design, this first structure pattern can be constituted by those first micro structures of part.
Now make the enforcement explanation of the present invention with a second embodiment.Refer to Fig. 7, be a light-emitting device 3 in
The side schematic view of the inner working of two embodiments.The difference of this second embodiment and first embodiment is this
Diffraction optics module 301 also includes one second diffraction optical element 35, and this second diffraction optical element 35
It is arranged in the second side 322 of this substrate 32.Similarly, shape on this second diffraction optical element 35
Become to have multiple second micro structures (being not depicted in schema), and those second micro structures constitute one second structure plan
(be not depicted in schema, but and the first structure light chart case that formed by the first diffraction optical element 31
Association).
According to the explanation of first embodiment, produced by laser light source module 30, laser beam 30a passes through
First diffraction optical element 31 forms first structure pattern beam；If this first structure pattern beam passes through another again
One diffraction optical element, this second diffraction optical element 35 of such as Fig. 7, then will re-form another time and spread out
Penetrate.Therefore, it is so that first structure light chart case is presented on this second diffraction optical element 35 in setting
Position correspond to this second structure plan position, and make this first structure light chart case be presented on this second
Area on diffraction optical element 35 is less than or equal to the area of this second structure plan.
The purpose of this set-up mode is to be directed to produce the application of specific structure light shape pattern, and incite somebody to action
Corresponding light beam carries out the adjustment of once light shape again.Therefore in this second embodiment, this second diffraction light
The second structure plan learning element 35 can be identical with the first structure pattern of this first diffraction optical element 31,
Also can be different with the first structure pattern of this first diffraction optical element 31, depending on its application structure to be produced
Depending on the demand of light chart case.
According to setting as above so that it may make this first structure pattern beam (light beam 23 of such as Fig. 6 A) shape
Become effectively diffraction and produce the one second structure plan light beam 33 assuming one second structure light shape pattern, such as
Shown in Fig. 7.
Now make the enforcement explanation of the present invention with a 3rd embodiment.Refer to Fig. 8 A, be a light-emitting device 4 in
The side schematic view of the inner working of 3rd embodiment.And refer to Fig. 8 B, it is the first diffraction in Fig. 8 A
Optical element 41 and its schematic diagram of the 3rd structure plan P3.This 3rd embodiment and the difference of first embodiment
The design of the different structure plan being to be formed on this first diffraction optical element 41.
According to above-mentioned explanation, the operation module of the light-emitting device of the present invention can provide user operation control
The operating modes of laser light source module processed, so as to adjust produced laser beam so as to laser beam figure
Case is changed.In other words, in order to produce other laser beam patterns, user can be adjusted by it
In the operating modes of at least one LASER Light Source (adjust its output or those laser of modulation be corresponding common
Chamber length of shaking or other scale feature) and complete the different modalities under horizontal mode or multiple transverse mode and throwing
The change of the laser beam pattern penetrated.On the other hand, this laser light source module also includes an optical glass group
(being not depicted in schema), and to change projected laser beam pattern also can via adjust this optical glass group
Relative distance and this diffraction optics module between is completing.
In 3rd embodiment, diffraction optics module 401 includes substrate 42 and the first diffraction optical element 41,
Substrate 42 has first side 421 and second side 422, and the first diffraction optical element 41 is disposed in proximity to swash
In the first side 421 of radiant module 40.This laser beam 40a produced by laser light source module 40
The second laser beam pattern being presented is (or to be may be defined as with numbering (10) in Fig. 3 A of prior art
Circular mode the 10th) pattern explain.Therefore this second laser beam pattern is to have light in centre
One loop configuration of the distribution of shape.Similarly, the 3rd structure plan P3 on the first diffraction optical element 41
Need and this second laser beam pattern is mutually corresponding.
As shown in Figure 8 B, first micro structure 410 of part constitutes the 3rd structure plan P3.Specifically,
3rd structure plan P3 refers in the fig. 8b except positioned at stage casing region and present the micro structure of dotted line
Other micro structures 410 (presenting the micro structure of solid line) beyond 410；Namely these first micro structures
410 distribution pattern is except distribution pattern (i.e. light shape or the intensity distributions according to this circular mode the 10th
Be located) design outside, also can be mapped to the distribution pattern of other mode, for example this circular mode 01*
Number.
Described adjustment running is with this laser beam from presenting this first laser beam pattern (i.e. this circular mode
State the 01*th) mode that changes over this second laser beam pattern (i.e. this circular mode the 10th) says
Bright.When this laser beam change in pattern, the scope being irradiated on this first diffraction optical element 41 or
Corresponding change also can be made in position；Micro- knot of solid line is moved at the micro structure 410 of the dotted line for example from Fig. 8 B
On structure 410.
In other words, the first micro structure 410 of part may make up the first structure pattern P 1 in Fig. 6 B, and
First micro structure 410 of another part may make up the 3rd structure plan P3.Constitute this first structure pattern P 1
The first micro structure 410 and the first micro structure 410 constituting the 3rd structure plan P3 can have the weight of part
Multiple, depending on the distribution of its laser beam pattern.Therefore in this 3rd embodiment, this light-emitting device 4
Effectively the laser beam pattern of multiple modalities can be applied.
Similarly, for being formed effectively when so that this laser beam 40a is radiated on the first diffraction optical element 41
Ground diffraction, is so that this second laser beam pattern is presented on this first diffraction optical element 41 in setting
Position correspond to the position of the 3rd structure plan P3, and make this second laser beam pattern be presented on this
Area on one diffraction optical element 41 is less than or equal to the area of the 3rd structure plan P3；Namely should
The distribution of the 3rd structure plan P3 can will cover the distribution of this second laser beam pattern effectively, and not
Cause this second laser beam pattern any a part beyond or fall within the 3rd structure plan P3 scope it
Outward.
According to setting as above so that it may make this laser beam 40a formed effectively diffraction and produce and assume one
One the 3rd structure plan light beam 43 of the 3rd structure light shape pattern, as shown in Figure 8 A.
Now make the enforcement explanation of the present invention with a fourth embodiment.Refer to Fig. 9, be a light-emitting device 5 in
The side schematic view of the inner working of four embodiments.The difference of this fourth embodiment and first embodiment is this
Light-emitting device 5 also includes collimation optics 54, and this collimation optics 54 is arranged at LASER Light Source mould
The front of block 50, produces surely in order to adjust laser beam 50a produced by laser light source module 50
Collimated optical beam 50b.Although having made collimation adjustment inside device, this collimated beam 50b also has this laser light
The laser beam pattern of bundle 50a；This first laser beam pattern of such as this circular mode the 01*th.
Therefore in this fourth embodiment, the first diffraction optical element 51 of diffraction optics module 501 (spreads out
Penetrate optical module 501 and include substrate 52 and the first diffraction optical element 51, substrate 52 has first side
521 and second side 522, the first diffraction optical element 51 is disposed in proximity to the first of laser light source module 50
On side 521) diffraction will be made to this collimated beam 50b；And with regard to being formed at this first diffraction optical element
Design of first structure pattern on 51 or multiple first micro structure etc., then all can be identical with first embodiment.
Specifically, because the collimation of this collimation optics 54 adjusts so that what collimated beam 50b was more original is sharp
The divergence of light light beam 50a is less or closer to parallel；Therefore, this collimated beam 50b is radiated at first
Distribution on diffraction optical element 51 also can be come little compared with the pattern in first embodiment.
According to setting as above so that it may make collimated beam 50b formed effectively diffraction and produce similar or connect
One first structure pattern beam 53 of the result of nearly first embodiment, as shown in Figure 9.
In the same manner, collimation optics 54 also can be applicable in second, third embodiment, or applies in basis
On other changes that the concept of first, second or third embodiment is made, and equally can be in being presented
Similar or close result is produced on structure light shape pattern.
In sum, light-emitting device proposed by the invention, mainly swashing according to the LASER Light Source being used
Light beam pattern is come corresponding diffraction optical element of arranging in pairs or groups, so that this kind of configuration can be applied effectively,
In particular for LASER Light Source under horizontal mode or multiple transverse mode for the running.So, except can be more preferably
Ground is produced outside required structure light shape pattern using diffractive technology, with horizontal mode or multiple transverse mould
Cannot the arrange in pairs or groups setting situation of suitable existing diffraction optical element of the LASER Light Source of state running is also improved.
It is event, the relevant issues proposed in energy effectively solving prior art of the present invention, and can have successfully been achieved
The main object of the present invention.
Although the present invention is disclosed above with embodiment, so it is not limited to the present invention.Belonging to the present invention
Those of ordinary skill in technical field, without departing from the spirit and scope of the present invention, various when making
Change and retouching.Therefore, protection scope of the present invention is worked as and is defined by its as defined in claim.
Claims (15)
1. a kind of light-emitting device is it is characterised in that include：
Laser light source module, in order to produce a laser beam, and this laser beam is in a horizontal mode or more than one
First laser beam pattern is assumed under the horizontal mode of weight；And
Diffraction optics module, is arranged at the front of this laser light source module or corresponding this laser beam acceptable
Incident orientation, in order to accept the irradiation of this laser beam, this diffraction optics module has first structure pattern,
This first structure pattern corresponds to this first laser beam pattern, produces in order to make this laser beam form diffraction
Bear the first structure pattern beam assuming first structure light chart case.
2. light-emitting device as claimed in claim 1 is it is characterised in that this laser light source module is quasiconductor
Illuminating source or laser diode, and this illuminating source presents same tone or part same tone, or, should
Illuminating source is to produce the light source of different-waveband or frequency spectrum by nonlinear optical crystal or liquid.
3. light-emitting device as claimed in claim 1 is it is characterised in that this first laser beam pattern is ring
Shape structure, or the centre of this first laser beam pattern presents the distribution of a hole and unglazed shape.
4. the light-emitting device as described in claim 1,2 or 3 is it is characterised in that this light-emitting device is to should have
Effect total height is in 10 millimeters.
5. light-emitting device as claimed in claim 1 is it is characterised in that this diffraction optics module includes：
Substrate, has first side and second side, and this substrate is with made by transparent material；And
First diffraction optical element, is arranged in this first side, and this first diffraction optical element has multiple
First micro structure, and part or all of the plurality of first micro structure constitutes this first structure pattern, and should
Multiple first micro structures present symmetrical or asymmetric distribution.
6. light-emitting device as claimed in claim 5 is it is characterised in that this first laser beam pattern presents
Position on this first diffraction optical element corresponds to the position of this first structure pattern, and this first laser
The area that beam pattern is presented on this first diffraction optical element is less than or equal to the face of this first structure pattern
Long-pending.
7. light-emitting device as claimed in claim 5 is it is characterised in that this diffraction optics module also includes：
Second diffraction optical element, is arranged in this second side, and this second diffraction optical element has multiple
Second micro structure, and the plurality of second micro structure constitutes the second structure plan, in order to make this first structure pattern
Light beam forms diffraction and produces the second structure plan light beam assuming the second structure light shape pattern；
Wherein this second structure plan is same as or is different from this first structure pattern.
8. light-emitting device as claimed in claim 7 is it is characterised in that this first structure light chart case presents
Position on this second diffraction optical element corresponds to the position of this second structure plan, and this first structure
The area that light chart case is presented on this second diffraction optical element is less than or equal to the face of this second structure plan
Long-pending.
9. light-emitting device as claimed in claim 5 is it is characterised in that this laser beam is incited somebody to action via adjustment
This first laser beam pattern being presented changes over a second laser beam pattern.
10. light-emitting device as claimed in claim 9 is it is characterised in that partial the plurality of first micro structure
Constitute the 3rd structure plan, and the 3rd structure plan corresponds to this second laser beam pattern, in order to make
This laser beam forms diffraction and produces the 3rd structure plan light beam assuming the 3rd structure light shape pattern.
11. light-emitting devices as claimed in claim 10 are it is characterised in that this second laser beam pattern is in
Now the position on this first diffraction optical element corresponds to the position of the 3rd structure plan, and this second swashs
The area that light beam pattern is presented on this first diffraction optical element is less than or equal to the 3rd structure plan
Area.
12. light-emitting devices as claimed in claim 9 are it is characterised in that this laser light source module is included at least
One LASER Light Source, and the change of this first laser beam pattern is via the fortune adjusting this at least one LASER Light Source
Make mode and complete.
13. light-emitting devices as claimed in claim 9 are it is characterised in that this laser light source module includes optics
Lens set, and the change of this first laser beam pattern is via this optical glass group of adjustment and this diffraction optics
Relative distance between module and complete.
14. light-emitting devices as claimed in claim 1 it is characterised in that this light-emitting device also includes housing,
In order to house this laser light source module and this diffraction optics module.
A kind of 15. light-emitting devices are it is characterised in that include：
Laser light source module, in order to produce a laser beam, and this laser beam is in a horizontal mode or more than one
First laser beam pattern is assumed under the horizontal mode of weight；
Collimation optics, are arranged at the front of this laser light source module, produce in order to adjust this laser beam
Bear a collimated beam；And
Diffraction optics module, is arranged at the front of this collimation optics, in order to accept the photograph of this collimated beam
Penetrate, this diffraction optics module has first structure pattern, this first structure pattern corresponds to this first laser light
Bundle pattern, produces the first knot assuming first structure light chart case in order to make this collimated beam form diffraction
Structure pattern light beam.
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| CN201510541179.6A CN106486883A (en) | 2015-08-28 | 2015-08-28 | Light-emitting device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510541179.6A CN106486883A (en) | 2015-08-28 | 2015-08-28 | Light-emitting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110858054A (en) * | 2018-08-24 | 2020-03-03 | 奇景光电股份有限公司 | Projection device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5151917A (en) * | 1991-04-18 | 1992-09-29 | Coherent, Inc. | Laser resonators employing diffractive optical elements |
| CN1388385A (en) * | 2001-05-25 | 2003-01-01 | 佳能株式会社 | Optical element, and scanning optical system and image forming equipment with the same |
| CN1529830A (en) * | 2001-07-16 | 2004-09-15 | ���ܿ���ϵͳ����˾ | Diffraction shaping of intensity distribution of spatially partially coherent light beam |
| US20060029120A1 (en) * | 2000-03-06 | 2006-02-09 | Novalux Inc. | Coupled cavity high power semiconductor laser |
| CN1734340A (en) * | 2004-08-03 | 2006-02-15 | 三星电子株式会社 | The optical system and the manufacture method thereof that are used for spatially controlling light polarization |
| CN1839523A (en) * | 2003-09-30 | 2006-09-27 | 皮雷利&C.有限公司 | Wavelength control of an external-cavity tuneable laser |
| CN101495833A (en) * | 2006-07-28 | 2009-07-29 | 卡尔蔡司Smt股份公司 | Optical element and method of calibrating a measuring apparatus comprising a wave shaping structure |
| CN104858551A (en) * | 2015-06-08 | 2015-08-26 | 苏州向隆塑胶有限公司 | Manufacturing method of optical microstructure, machine table and light guide plate of machine table |
-
2015
- 2015-08-28 CN CN201510541179.6A patent/CN106486883A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5151917A (en) * | 1991-04-18 | 1992-09-29 | Coherent, Inc. | Laser resonators employing diffractive optical elements |
| US20060029120A1 (en) * | 2000-03-06 | 2006-02-09 | Novalux Inc. | Coupled cavity high power semiconductor laser |
| CN1388385A (en) * | 2001-05-25 | 2003-01-01 | 佳能株式会社 | Optical element, and scanning optical system and image forming equipment with the same |
| CN1529830A (en) * | 2001-07-16 | 2004-09-15 | ���ܿ���ϵͳ����˾ | Diffraction shaping of intensity distribution of spatially partially coherent light beam |
| CN1839523A (en) * | 2003-09-30 | 2006-09-27 | 皮雷利&C.有限公司 | Wavelength control of an external-cavity tuneable laser |
| CN1734340A (en) * | 2004-08-03 | 2006-02-15 | 三星电子株式会社 | The optical system and the manufacture method thereof that are used for spatially controlling light polarization |
| CN101495833A (en) * | 2006-07-28 | 2009-07-29 | 卡尔蔡司Smt股份公司 | Optical element and method of calibrating a measuring apparatus comprising a wave shaping structure |
| CN104858551A (en) * | 2015-06-08 | 2015-08-26 | 苏州向隆塑胶有限公司 | Manufacturing method of optical microstructure, machine table and light guide plate of machine table |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110858054A (en) * | 2018-08-24 | 2020-03-03 | 奇景光电股份有限公司 | Projection device |
| CN110858054B (en) * | 2018-08-24 | 2021-09-21 | 奇景光电股份有限公司 | Projection device |
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Application publication date: 20170308 |