CN209167789U - A kind of optical projection mould group and sensing device - Google Patents
A kind of optical projection mould group and sensing device Download PDFInfo
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- CN209167789U CN209167789U CN201821480767.9U CN201821480767U CN209167789U CN 209167789 U CN209167789 U CN 209167789U CN 201821480767 U CN201821480767 U CN 201821480767U CN 209167789 U CN209167789 U CN 209167789U
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Abstract
The utility model is suitable for optics and electronic technology field, provides a kind of optical projection mould group, is sensed on the pattern beam to measured target object with predetermined pattern for projecting.The optical projection mould group includes: VCSEL light source, for providing light beam；And optical module, including incident side and light emission side, the incident side and the light emission side are adjacent two sides；Wherein, the VCSEL light source issues light beam to the incident side, the optical module is deflected to the second direction different from the first direction from first direction to the transmission direction of the light beam from VCSEL light source, and the pattern beam that can project predetermined pattern is formed to the light field of light beam progress rearrangement, the pattern beam transmitted in a second direction finally projects away from the light emission side, to reduce the thickness of entire optical projection mould group in this second direction.The utility model also provides a kind of sensing device and equipment including the optical projection mould group.
Description
Technical field
The utility model belongs to optical technical field more particularly to a kind of optical module, optical projection mould group, sensing device
And equipment.
Background technique
Existing three-dimensional (Three Dimensional, 3D) recognition of face mould group is because being necessary to ensure that enough light in inside
Journey would generally be made that comparison is thick, not meet the designer trends of current electronic device slimming.And if set to meet slimming
It counts and will affect its recognition effect if compressing the inside light path of 3D recognition of face mould group.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of novel optical module, optical projection mould group,
Sensing device and equipment can meet slimming design requirement under the premise of keeping enough light paths.
The utility model embodiment provides a kind of optical projection mould group, for projecting the pattern beam with predetermined pattern
It is sensed on to measured target object, comprising:
VCSEL light source, for providing light beam；With
Optical module, including incident side and light emission side, the incident side and the light emission side are adjacent two sides；
Wherein, the VCSEL light source issues light beam to the incident side, and the optical module is to from VCSEL light source
The transmission direction of light beam is deflected to the second direction different from the first direction from first direction, and carries out to the light field of light beam
Rearrangement forms the pattern beam that can project predetermined pattern, and the pattern beam transmitted in a second direction is finally from the light out
Side projects away, to reduce the thickness of entire optical projection mould group in this second direction.
In some embodiments, the optical module includes reflecting surface, and the reflecting surface is by being all-trans to light beam realization
It penetrates to reach incident beam being deflected to second direction from first direction, or, the reflecting surface is provided with reflective coating, by anti-
The light beam of projection is deflected to second direction from first direction by the reflex for penetrating film layer.
In some embodiments, the angle between the reflecting surface and first direction is 45 degree.
In some embodiments, the vertical second direction of the first direction.
In some embodiments, the optical module includes optical path-deflecting portion and pattern generation portion, the optical path-deflecting
Portion is used to the transmission direction of the light beam from the VCSEL light source being deflected to second direction from first direction, entire to reduce
Thickness of the optical projection mould group on the final projecting direction of light beam, the pattern generation portion are used to carry out again the light field of light beam
Arrangement is to form the pattern beam that can project predetermined pattern.
In some embodiments, the optical module further comprises light beam adjustment section, for being adjusted to light beam；
The optical path-deflecting portion includes reflecting prism, and the reflecting prism includes the incident side surface set gradually along projecting light path, anti-
Face and light emission side surface are penetrated, the light beam adjustment section includes the optical texture for having optical alignment and/or expanding effect, described
Optical texture is formed directly on the incident side surface and/or light emission side surface of the reflecting prism；Or
The optical path-deflecting portion includes reflecting prism, and the reflecting prism includes the incident side set gradually along projecting light path
Surface, reflecting surface and light emission side surface, the light beam adjustment section include the optical texture for having optical alignment and/or expanding effect
Patch, the optical texture patch are bonded on the incident side surface and/or light emission side surface of reflecting prism；Or
The optical path-deflecting portion includes reflecting prism, and the reflecting prism includes the incident side set gradually along projecting light path
Surface, reflecting surface and light emission side surface, the light beam adjustment section include having optical alignment and/or expanding the independence of effect thoroughly
Mirror, the lens correspond to the incident side surface of reflecting prism and/or the setting of light emission side surface, the lens and can move along projecting light path
It is dynamic；Or
The optical path-deflecting portion includes reflecting mirror, and the reflecting surface of the reflecting mirror changes the direction of projecting light path to realize light
Road deflection, the light beam adjustment section includes the separate lenses for having optical alignment and/or expanding effect, and corresponding reflecting mirror enters light
Side and/or light emission side setting；Or
The optical path-deflecting portion includes reflecting prism, and the reflecting prism includes the incident side set gradually along projecting light path
Surface, reflecting surface and light emission side surface, the light beam adjustment section include having optical alignment and/or expanding the independence of effect thoroughly
Mirror, the lens correspond to the incident side surface setting of reflecting prism, and the lens can be moved along projecting light path.
In some embodiments: the pattern generation portion passes through the optical microstructures that are correspondingly arranged to the light of incident beam
Field carries out rearrangement to form the pattern beam that can project predetermined pattern, and the pattern generation portion is to be formed with the light
The individual optical elements for learning micro-structure, the light emission side after the deflection optical portion deflection light beam is set；Or
The pattern generation portion is the institute on the light emission side surface after being formed directly into the deflection optical portion deflection light beam
State optical microstructures；Or
The pattern generation portion by the light field of the optical microstructures that are correspondingly arranged to incident beam carry out rearrangement come
The pattern beam that can project predetermined pattern is formed, the pattern generation portion is the independent light for being formed with the optical microstructures
Element is learned, the incident side in the deflection optical portion is set and between the light beam adjustment section and optical path-deflecting portion；Or
The pattern generation portion is the optical microstructures being formed directly on the reflecting surface in the deflection optical portion, is entered
The formation of rearrangement light field can under the action of the optical microstructures while being reflected for the light beam being incident upon on reflecting surface
The pattern beam for projecting predetermined pattern projects.
In some embodiments, the light beam from the VCSEL light source passes in the optical module along first direction
Defeated path is longer than the path transmitted in a second direction.
In some embodiments, the VCSEL light source is the wide face type vertical cavity surface emitting laser of single hole, the single hole
Wide face type VCSEL is the uniform area source of luminous intensity, and the uniform light field that the pattern generation portion issues the light source carries out
Rearrangement forms the pattern beam that can project irregular pattern；Or
The VCSEL light source be array VCSEL, including be formed in be randomly distributed on the same semiconductor base it is more
A VCSEL luminescence unit, can project the spot pattern of irregular distribution, and the pattern generation portion copies multiple described do not advise
The spot pattern that is then distributed simultaneously is unfolded and is formed to be incident upon on measured target object irregularly to divide within the scope of preset expanded- angle
The spot pattern of cloth；Or
The VCSEL light source is array VCSEL, including is formed in equal according to same intervals on the same semiconductor base
Multiple VCSEL luminescence units of even arrangement, can project equally distributed spot pattern, and the pattern generation portion is by the light source
The uniform light field of sending carries out rearrangement and forms the pattern beam that can project irregular pattern；Or
The VCSEL light source is array VCSEL, including is formed in equal according to same intervals on the same semiconductor base
Multiple VCSEL luminescence units of even arrangement, can project equally distributed spot pattern, and the pattern generation portion can also be by edge
The light field of the luminescence unit of preset direction arrangement mutually merges the candy strip arranged with formation rule；Or
The VCSEL light source includes the second emission part for issuing the second light beam of the first emission part and sending of the first light beam,
First light beam is used to form the flood beam of optical power detection, and second light beam is used to form on measured target object
The pattern beam of predetermined pattern is projected, first emission part and the second emission part are formed on the same semiconductor base simultaneously
It is independently worked by different control signals.
The utility model embodiment provides a kind of sensing device, for sensing the three-dimensional information of measured target object.It is described
Sensing device includes the optical projection mould group and sensing mould group of above-mentioned any one embodiment.The sensing mould group is for sensing institute
It states the predetermined pattern that optics module projects on measured target object and the image by analyzing the predetermined pattern is obtained by mark
Object three-dimensional information.
A kind of equipment, the sensing device including above-mentioned any one embodiment, the equipment is according to the sensing device institute
The three-dimensional information of the measured target object sensed executes corresponding function.
Optical module provided by the utility model embodiment, optical projection mould group, sensing device and equipment pass through by
Projecting light path carries out partially deflected to reduce whole mould group along the thickness of projecting direction, is conducive to the various equipment using the mould group
Slimming design.
The additional aspect and advantage of the utility model embodiment will be set forth in part in the description, partially will be under
Become obvious in the description in face, or is recognized by the practice of the utility model embodiment.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the optical module that the utility model first embodiment provides.
Fig. 2 is the structural schematic diagram for the optical module that the utility model second embodiment provides.
Fig. 3 is the structural schematic diagram for the optical module that the utility model third embodiment provides.
Fig. 4 is the structural schematic diagram for the optical module that the 4th embodiment of the utility model provides.
Fig. 5 is the structural schematic diagram for the optical module that the 5th embodiment of the utility model provides.
Fig. 6 is the structural schematic diagram for the optical module that the utility model sixth embodiment provides.
Fig. 7 is the structural schematic diagram for the optical module that the 7th embodiment of the utility model provides.
Fig. 8 is the structural schematic diagram for the optical module that the 8th embodiment of the utility model provides.
Fig. 9 is the structural schematic diagram for the optical module that the 9th embodiment of the utility model provides.
Figure 10 is the structural schematic diagram for the optical projection mould group that the tenth embodiment of the utility model provides.
Figure 11 is the structural schematic diagram for the optical projection mould group that the 11st embodiment of the utility model provides.
Figure 12 is the structural schematic diagram for the optical projection mould group that the 12nd embodiment of the utility model provides.
Figure 13 is the structural schematic diagram for the optical projection mould group that the 13rd embodiment of the utility model provides.
Figure 14 is the structural schematic diagram of the light source of optical projection mould group in Figure 13.
Figure 15 is the structural schematic diagram for the sensing device that the 14th embodiment of the utility model provides.
Figure 16 is the structural schematic diagram for the equipment that the 15th embodiment of the utility model provides.
Specific embodiment
The embodiments of the present invention is described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein
Same or similar label indicates same or similar element or element with the same or similar functions from beginning to end.Lead to below
It crosses the embodiment being described with reference to the drawings to be exemplary, is only used for explaining the utility model, and should not be understood as practical to this
Novel limitation.In the description of the present invention, it should be understood that term " first ", " second " are only used for describing, without
It can be interpreted as indication or suggestion relative importance or implicitly indicate the quantity of indicated technical characteristic or put in order.By
This defines " first ", the technical characteristic of " second " can explicitly or implicitly include one or more technology
Feature.The meaning of " plurality " is two or more in the description of the present invention, unless otherwise clearly specific limit
It is fixed.
In the description of the present invention, it should be noted that unless otherwise specific regulation or limiting, term " peace
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integration
Connection；It can be mechanical connection, be also possible to be electrically connected or be in communication with each other；It can be directly connected, intermediate matchmaker can also be passed through
Jie is indirectly connected, and can be the connection inside two elements or the interaction relationship between two elements.For this field
For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
Following disclosure provides many different embodiments or example is used to realize the different structure of the utility model.
In order to simplify the disclosure of the utility model, hereafter only to the component of specific examples and being set for describing.Certainly, they are only
Example, and purpose does not lie in limitation the utility model.In addition, the utility model can reuse reference in different examples
Number and/or reference letter, this reuse are to simplify and clearly state the utility model, itself does not indicate institute
The particular kind of relationship between various embodiments and/or setting discussed.In addition, the utility model is provided in the following description
Various specific techniques and material are only the example for realizing technical solutions of the utility model, but those of ordinary skill in the art answer
This recognizes that the technical solution of the utility model can also be by other techniques for not describing hereafter and/or other materials come real
It is existing.
Further, described feature, structure can be incorporated in one or more embodiment party in any suitable manner
In formula.In the following description, many details are provided so as to fully understand the embodiments of the present invention.So
And one of ordinary skill in the art would recognize that, even if without one or more in the specific detail, or using other knots
Structure, constituent element etc. can also practice the technical solution of the utility model.In other cases, it is not shown in detail or describes known knot
Structure or operation to avoid fuzzy the utility model emphasis.
As shown in Figure 1, the utility model first embodiment provides a kind of optical module 1, for sending out a light source 10
Original beam out is converted into the pattern beam with predetermined pattern, and projects on the pattern beam to a measured target object,
To sense the three-dimensional information of measured target object.The predetermined pattern can be the hot spot of multiple irregular distributions, or more
The striped of rule arrangement, certainly, the predetermined pattern can also be other suitable patterns, and the utility model is to the default figure
Case does not do specific limitation.
It can be the light beam with specific wavelength according to sensing principle and application scenarios, the original beam.In this implementation
In mode, the original beam, for example, be infrared or near infrared light, wave-length coverage be 750 nanometers (Nanometer, nm) extremely
1650nm.So, the original beam is also not limited to infrared or near infrared light, such as can also be other suitable for ultraviolet light etc.
Light beam.
Currently, 3D detection technology large-scale application in intelligent terminal, augmented reality (Augmented Reality, AR)/
Multiple necks such as virtual reality (Virtual Reality, VR), intelligent security guard, robot vision, automatic Pilot, automedica
Domain.The pattern beam is the light beam projected on measured target object during sensing the 3D information of measured target object, can
To project the 3D information that preset light pattern is used to sense measured target object on measured target object.Acquired measured target
The 3D information of object has a variety of applications, for example can use the functions such as the 3D information realization face recognition.It should be noted that
The utility model full text does not do specific limitation to the application of this 3D information.
The optical module 1 includes light beam adjustment section 12, optical path-deflecting portion 14 and pattern generation portion 16.The light source 10 is sent out
Original beam out is incident to pattern generation portion 16 after the adjustment in light beam adjustment section 12 and optical path-deflecting portion 14, to generate energy
Enough pattern beams that predetermined pattern is projected on measured target object.
The light beam adjustment section 12 is used to adjust the original beam issued from the light source 10, so that subsequent be incident on pattern
Light beam in generating unit 16 keeps collimating and meeting preset aperture requirement substantially.The light beam adjustment section 12 is sent out according to light source 10
Original beam feature out may include one or more optical textures 120, such as: if the issued original beam of light source 10
The angle of divergence is bigger, then needs to be arranged optical alignment structure 120 for original beam and be converted to approximately parallel collimated ray, can
So that the range that the light beam after conversion is covered will not the significant change with change in optical path length；If the issued original beam of light source 10
Aperture it is too small, need to be arranged optical beam-expanding structure 120 by the borehole enlargement of original beam, so as to cover the full figure
Case generating unit 16.The optical texture 120 can be one or more independent optical elements, can also be formed directly into optics
On the surface of other optical elements of component 1.
The optical texture 120 can be but be not limited to non-spherical structure.As long as the optical texture 120 can be real
Existing required function, such as but be not limited to collimate or expand, the optical texture 120 of various suitable shapes can be used.
The optical path-deflecting portion 14 for changing projecting light path direction, to meet light path of the projecting light path along specific direction
Design requirement.In order to meet the design requirement of optics module slimming, the optical path-deflecting portion 14 is by projecting light path by light source 10
Exit direction deflection special angle after project away again, to reduce thickness of the entire optics module on final projecting direction.
The optical path-deflecting portion 14 includes the incident side 140 set gradually along optical path, reflecting surface 142 and light emission side 144.Institute
It states incident side 140 to be arranged towards light source 10, the original beam issued for importing light source 10.The reflecting surface 142 is used for will
The light emission side 144 in incident light beam towards optical path-deflecting portion 14 reflects.The tilt angle of the reflecting surface 142 is according to optical path-deflecting
The light path angle to be deflected of portion 14 is configured.The light emission side 144 is arranged towards reflecting surface 142, for that will pass through reflection
Light beam after face 142 deflects projects away.
In the present embodiment, the optical path-deflecting portion 14 includes reflecting prism, and light source 10 is emitted along first direction X
Light beam deflection substantially 90 degree after in a second direction Y project away.The incident side 140 is reflecting prism towards light source 10
A wherein side surface.The reflecting surface 142 is the inclined-plane of reflecting prism, is substantially in 45 degree of settings with first direction X.The light out
Side 144 is surface of the reflecting prism towards exit direction, substantially vertical with 140 surface of incident side.The light beam adjustment section
12 include the optical texture 120 with optical alignment effect, is formed directly into 140 surface of incident side of the reflecting prism respectively
On 144 surface of light emission side.The reflecting prism is to be integrated with the integrated optical element of collimation and deflection optical path function.
The reflecting prism is optically denser medium compared to air.Correspondingly, when the light beam that light source 10 issues enters from air
It is reflected when being incident upon reflecting prism, collimating effect further can be played to incident light beam.
Therefore, in the present embodiment, optical path-deflecting portion 14 is arranged by the light emission side in light source 10 to realize projection light
The direction on road deflects, and can play converging action to the light beam of edge-diffusion.
The first direction X and the second direction are vertical.Wherein, the first direction is, for example, horizontal direction, described
Second direction Y is, for example, vertical direction.Ground is changed, the first direction X for example can also be vertical direction, the second direction
X is, for example, horizontal direction.The utility model does not do specific limitation to first direction X and second direction Y.
It is understood that in the present embodiment, being adjusted according to the characteristics of luminescence of the light source 10 and the light beam
Optical path length required by a pair of of optical texture 120 in portion 12, the reflecting prism can substantially tri-prismoids or trapezoidal rib
Cylinder.Such as: when above-mentioned required light path is shorter, 140 surface of incident side, reflecting surface 142 and the light out of the reflecting prism
144 surface of side, which mutually borders on, substantially forms tri-prismoid.When above-mentioned required light path is longer, the entrance prism enters light
It is separated by distance required for one section of light path along optical path direction between 140 surface of side and reflecting surface 142, the reflecting prism is substantially
Trapezoidal prism.
The reflecting prism can be anti-by the light emission side 144 in incident beam towards optical path-deflecting portion 14 using total reflection principle
It penetrates.However, changing ground, in addition to total reflection principle, reflection function can also be realized by the way that reflecting material is arranged in reflecting surface 142
Can, such as patch reflectance coating etc..
Further, in some embodiments, the reflecting surface 142 and first direction X can also be in other proper angles
Setting, it is not limited to 45 degree.
The reflecting prism can also be replaced by other appropriate members with the same function, it is not limited to prism, only
It is used for that Y is projected away in a second direction after substantially 90 degree of light beam that first direction X is emitted deflection by light source 10.
The light beam that the light source 10 is emitted does not need to be strictly defined as along first direction X yet, can also be with first direction X
The outgoing beam being at certain angle of inclination.Correspondingly, the deflection angle of light beam is also not limited to 90 degree.
It is understood that the optical module 1 can also include one or more optical elements with other function,
The incident side 140 or light emission side 144 that the deflection optical portion 14 can be corresponded to are configured to supply the optics of the light source 10 spy
The gap between optical requirement that property and projecting beam need to meet.Such as: if the relatively narrow nothing of original beam that light source 10 is issued
Method covers the full pattern generation portion 16, then the optical module 1 can also include one or more light for having and expanding function
Element is learned to be used to extend light beam to cover the full pattern generation portion 16.
The pattern generation portion 16 is used to incident light beam formation can project predetermined pattern on measured target object
Pattern beam.The pattern generation portion 16 passes through the optical microstructures 163 being correspondingly arranged and carries out weight to the light field of incident beam
New to arrange to realize above-mentioned function, the optical microstructures 163 include but is not limited to diffraction optics lines, microlens array, light
Grid and combinations thereof.
For forming the predetermined pattern of irregular distribution hot spot, if the light source 10 is the hair of multiple irregular distributions
The light emitting array of light unit composition, light beam issued itself have included multiple beamlets of irregular distribution, then the figure
The light beam group that case generating unit 16 is issued by the luminescence unit that the optical microstructures 163 replicate multiple irregular distributions,
And it is unfolded within the scope of preset expanded- angle and forms the spot pattern for being incident upon and being randomly distributed on measured target object.If
The light beam that the light source 10 is launched is the light beam of even intensity distribution, then the pattern generation portion 16 can be micro- by the optics
Light beam is carried out rearrangement by structure 163, is dispersed as that the pattern beam of irregular pattern can be projected.In present embodiment
In, the pattern generation portion 16 is the diffraction optical element (Diffractive that 14 light emission side 144 of deflection optical portion is arranged in
Optical Element,DOE).The DOE is independent optical element, including transparent substrate 160 and is formed in transparent substrate
On diffraction optics lines as optical microstructures 163.Wherein, the irregular pattern is for example including random, pseudorandom
With quasi-periodic pattern.
Ground is changed, the pattern generation portion 16 can also be thrown by forming the method for transmission pattern on the transparent substrate
Project the pattern beam with predetermined pattern.For example, forming the pattern layer made of light-proof material, institute on the transmission substrate
It states and forms the light beam with predetermined pattern in requisition for the position hollow out of light transmission in pattern layer to allow light beam to project away.
The pattern generation portion 16 is not limited to the above embodiment, and can also be other suitable structures, as long as can be real
Incident light beam is now formed to the pattern beam that predetermined pattern can be projected on measured target object.
In the present embodiment, preferably, path of the light beam in optical path-deflecting portion 14 along first direction X transmission is longer than edge
The path of second direction Y transmission.
As shown in Fig. 2, the utility model second embodiment provides a kind of optical module 2, with first embodiment
In optical module 1 it is essentially identical, the main distinction is that the light beam adjustment section 22 includes having a pair of optical alignment effect
Optical texture patch 220 is bonded in respectively on 244 surface of 240 surface of incident side and light emission side of reflecting prism, and and indirect
The integral structure being formed on 244 surface of 240 surface of incident side and light emission side of the reflecting prism.
In the present embodiment, the reflecting prism is right-angled trapezium prism, and wherein the inclined-plane of right-angled trapezium prism is used as
Reflecting surface.Ground is changed, the reflecting prism can also be for example triangular prism or the prism of other suitable shapes.
The optical texture patch 220 can be but be not limited to non-spherical structure.As long as the optical texture patch 220
Functions, the optical texture patch 220 of various suitable shapes such as required optical function may be implemented, such as collimate or expand all is
Can with.
As shown in figure 3, the utility model third embodiment provides a kind of optical module 3, with first embodiment
In optical module 1 it is essentially identical, the main distinction is that the light beam adjustment section 32 includes a pair of independent lens 320, respectively
340 surface of incident side of corresponding reflecting prism and the setting of 344 surface of light emission side.The lens 320 can be along the difference of projecting light path
Position is arranged without being directly anchored on 344 surface of 340 surface of incident side or light emission side of reflecting prism.
In the present embodiment, the reflecting prism is right-angled trapezium prism, and wherein the inclined-plane of right-angled trapezium prism is used as
Reflecting surface.Ground is changed, the reflecting prism can also be for example triangular prism or the prism of other suitable shapes.
The lens 320 can be but be not limited to the lens for having the effects that optical alignment or expanding.For example, described
Mirror 320 is the lens of non-spherical lens, spherical lens or various other suitable shapes.
As shown in figure 4, the 4th embodiment of the utility model provides a kind of optical module 4, with third embodiment
In optical module 3 it is essentially identical, the main distinction is that the light beam adjustment section 42 includes a pair of independent lens 420, right
340 surface of incident side of reflecting prism is answered to be arranged.The pattern generation portion 46 is to be formed directly into the deflection optical portion 44
Optical microstructures 463 on 344 surface of light emission side.The optical microstructures 463 carry out rearrangement to the light field of incident beam
To form the pattern beam that can project predetermined pattern.The optical microstructures 463 include but is not limited to diffraction optics lines, micro-
Lens array, grating and combinations thereof.
In the present embodiment, the reflecting prism is right-angled trapezium prism, and wherein the inclined-plane of right-angled trapezium prism is used as
Reflecting surface.Ground is changed, the reflecting prism can also be for example triangular prism or the prism of other suitable shapes.
The lens 420 can be but be not limited to the lens for having the effects that optical alignment or expanding.The lens
420, for example, can be the lens of non-spherical lens, spherical lens or various other suitable shapes.
As shown in figure 5, the 5th embodiment of the utility model provides a kind of optical module 5, with the 4th embodiment
In optical module 4 it is essentially identical, the main distinction be the light beam adjustment section 52 include be formed directly into entering for reflecting prism
Optical texture 520 on 540 surface of light side.The pattern generation portion 56 is the light emission side for being formed in the deflection optical portion 54
Optical microstructures 563 on 544 surfaces.The optical microstructures 563 carry out rearrangement to the light field of incident beam to be formed
The pattern beam of predetermined pattern can be projected.The optical microstructures 563 include but is not limited to diffraction optics lines, lenticule battle array
Column, grating and combinations thereof.
The optical texture 520 can be but be not limited to the optical texture of aspherical shape.As long as the optical texture
520 may be implemented required function, such as have the function of optical alignment or expand, and the optical texture 520 of various suitable shapes is all
It is possible.
It is understood that the light beam adjustment section 52 can also include the incident side of one or more corresponding reflecting prisms
The optical lens 522 of 540 surfaces setting.The optical lens 522 can be configured along the different location of projecting light path, with cooperation
The optical texture 520 on 540 surface of incident side is formed in realize preset pH effect effect.
As shown in fig. 6, the utility model sixth embodiment provides a kind of optical module 6, with third embodiment
In optical module 3 it is essentially identical, the main distinction be the optical path-deflecting portion 64 include reflecting mirror 642, pass through the reflection
Mirror 642 reflects to change the direction of projecting light path to realize optical path-deflecting.The light beam adjustment section 62 includes a pair of independent
Lens 620, the incident side 640 and light emission side 644 for respectively corresponding reflecting mirror are arranged.
The lens 620 can be but be not limited to non-spherical lens, as long as required function may be implemented in the lens 620
Can, such as have the function of optical alignment or expand, the lens 620 of various suitable shapes are all possible.
Ground is changed, in other embodiments, the light beam in the optical module 1-6 of the respective embodiments described above is adjusted
Portion 12-62 also can be omitted.
As shown in fig. 7, the 7th embodiment of the utility model provides a kind of optical module 7, with first embodiment
In optical module 1 it is essentially identical, the main distinction is that the reflecting surface 742 is to have both light beam adjustment function and reflection function
Curved-surface structure.The light beam adjustment function includes but is not limited to the functions such as to collimate or expand.Therefore, the reflecting surface 742 is changing
The function of a part of light beam adjustment section 72 can also be realized while becoming the direction of projecting light path, it is described so as to reduce
The number of elements of light beam adjustment section 72 or the setting of optical texture.Certainly, for changing projecting light path on the reflecting surface 742
Reflection function can be realized by the method for total reflection principle or setting reflective coating.
In addition, changing ground, the function that the reflecting surface 742 for example can also have reflection function to adjust without light beam
Energy.Since the reflecting surface 742 is reflecting curved surface, the light beam with certain diffusion angle issued from light source 10 can be adjusted
To go out to be shot out along the vertical direction.Correspondingly, light beam adjustment section 72 is omitted altogether.
As shown in figure 8, the 8th embodiment of the utility model provides a kind of optical module 8, with third embodiment
In optical module 3 it is essentially identical, the main distinction is that the separate lenses of the light beam adjustment section 82 correspond to the deflection optical
840 surface of incident side in portion 84 is arranged.The setting of pattern generation portion 86 is in the light beam adjustment section 82 and the deflection optical
Between portion 84.The original beam that the light source 83 the issues successively shape after the modulation in light beam adjustment section 82 and pattern generation portion 86
It is projected away again at after the pattern beam that can project predetermined pattern through changing direction by deflection optical portion 84.
As shown in figure 9, the 9th embodiment of the utility model provides a kind of optical module 9, with the 8th embodiment
In optical module 8 it is essentially identical, the main distinction be the pattern generation portion 96 be formed directly into the deflection optical portion
Optical microstructures 963 on 94 reflecting surface 942.The optical microstructures 963 carry out rearrangement to the light field of incident beam
To form the pattern beam that can project predetermined pattern.The optical microstructures 963 include but is not limited to diffraction optics lines, micro-
Lens array, grating and combinations thereof.The light beam being incident on reflecting surface 942 is while being reflected in the optical microstructures 963
Under the action of rearrangement light field formed can project predetermined pattern pattern beam project.
For the embodiment of Fig. 8 and Fig. 9, since the incident side in the deflection optical portion is arranged in pattern generation portion, thus
Compared to the light emission side that the deflection optical portion is arranged in pattern generation portion, the light using the optical module can further be thinned
Mould group is learned in thickness in a second direction.
Expansiblely, corresponding be omitted of the light beam adjustment section in the optical module of above-mentioned each embodiment is also feasible
's.In this way, the thickness of the optics module including the optical module similarly may be implemented to be thinned.
Further, it is also possible additionally to increase certain elements in the optical module of above-mentioned each embodiment, it should all
Fall into the protection scope of the utility model.
As shown in Figure 10, the tenth embodiment of the utility model provides a kind of optical projection mould group 81 comprising light source
80 and the optical module 1 as described in the above-mentioned first to the 7th embodiment.The light beam that the light source 80 issues passes through the optics
Predetermined pattern is projected on measured target object after component 1, with the three-dimensional information for sensing measured target object.
The light source 80 is semiconductor laser.Preferably, the light source 80 is vertical cavity surface emitting laser
(Vertical Cavity Surface Emitting Laser, VCSEL), can pass through photoetching in semiconductor substrate 800
Or the techniques such as etching are made.
In the present embodiment, the light source 80 is the wide face type VCSEL of single hole.The wide face type VCSEL of single hole only has one
A lightening hole, the aperture that shines is larger, the luminous aperture of the single luminescence unit several times in general array VCSEL.The list
The light beam that the wide face type VCSEL in hole is issued is in the area source of substantially parallel outgoing after the modulation of the light beam adjustment section 12.Institute
Pattern generation portion 16 is stated, for example, the uniform light that the area source can be issued by the optical microstructures 163 of corresponding design
Field carries out rearrangement, to form the pattern beam that can project irregular pattern on measured target object.
As shown in figure 11, the 11st embodiment of the utility model provides a kind of optical projection mould group 91, with the 8th
Optical projection mould group 81 in embodiment is essentially identical, and the main distinction is that the light source 90 is multiple VCSEL luminescence units
The light emitting array of composition, including being formed in the multiple VCSEL luminescence units being randomly distributed on the same semiconductor base 900
902, the spot pattern of irregular distribution can be projected.The pattern generation portion 16, for example, can be micro- by the optics of corresponding design
Structure 163 copies the spot pattern of multiple irregular distributions and is incident upon on measured target object.
As shown in figure 12, the 12nd embodiment of the utility model provides a kind of optical projection mould group 101, with the 8th
Optical projection mould group 81 in embodiment is essentially identical, and the main distinction is that the light source 100 is multiple VCSEL luminous single
The light emitting array of member composition, including be formed in evenly arranged multiple according to same intervals on the same semiconductor base 1000
VCSEL luminescence unit 1002 can project equally distributed spot pattern.The light that the pattern generation portion 16 passes through corresponding design
Micro-structure 163 is learned the equally distributed spot pattern is dispersed as the spot pattern of irregular distribution and is incident upon measured target
On object.The pattern generation portion 16, for example, it is also possible to will be arranged along preset direction by the optical microstructures 163 of corresponding design
Luminescence unit light field mutually merge with formation rule arrange candy strip.
As shown in Figure 13 and Figure 14, the 13rd embodiment of the utility model provides a kind of optical projection mould group 111,
Essentially identical with the optical projection mould group 81 in the 8th embodiment, the main distinction is that the light source 110 includes that can distinguish solely
Vertical control luminous the first emission part 112 and the second emission part 114.First emission part 112 issues the first light beam and is used for shape
At the flood beam of optical power detection.The flood beam is projected on measured target object the measured target object for identification
It whether is the special object for meeting default feature.For example, the flood beam can be used to identify the measured target object whether be
Face.The second light beam that second emission part 114 issues is used to form the pattern that predetermined pattern is projected on measured target object
Light beam.The predetermined pattern is used to sense the three-dimensional information of the measured target object.First emission part 112 and the second transmitting
Portion 114 may be formed on the same semiconductor base 115 to be integrated into overall structure.In the present embodiment, first light
The wavelength of beam and the second light beam is identical, and wave-length coverage is 750nm to 1650nm.
In the present embodiment, first emission part 112 includes one or more for emitting the first of the first light beam
Illuminator 1120.Second emission part 114 includes one or more for emitting the second illuminator 1140 of the second light beam.Institute
It states the first illuminator 1120 and the second illuminator 1140 is formed on the same semiconductor base 115.The semiconductor base 114
On define positioned at first light emitting region 122 at the middle part of semiconductor base 114 and be arranged around first light emitting region 122
The second light emitting region 102.First illuminator 1120 is uniform according to preset same intervals in the first light emitting region 102
Distribution.Second illuminator 1140 is irregularly arranged in the second light emitting region 122.
First illuminator 1120 and the second illuminator 1140 can be semiconductor laser.Preferably, in this implementation
In mode, first illuminator 1120 and the second illuminator 1140 are VCSEL.
In the present embodiment, first light emitting region 122 positioned at 114 middle part of semiconductor base is rectangle.It is described
Second light emitting region 102 is correspondingly arranged at four edges of the first light emitting region 122.First illuminator 1120 is second
It is uniformly arranged along two sides of each corner in the second light emitting region 102 according to same intervals four corners of light emitting region 102
Cloth multilayer, it is each that first light emitting region 122 as dotted line described in Figure 12 surrounded envelopes the first light emitting region 102
Four right angle frame bar-shaped zones at a right angle.Second illuminator 102 is irregularly arranged in the first light emitting region 122,
For issuing the second light beam of light intensity irregular distribution when lighting.
It is understood that multiple equally distributed first illuminators in each described first light emitting region 102
1120 can also be substituted by the wide face type VCSEL of a single hole.That is, each first light emitting region 102 is the wide face type of a single hole
VCSEL issues the first light beam of even intensity as area source.
It is provided with the first pad 104 connecting with first illuminator 1120 on the semiconductor base 115, described
One pad 104 is for controlling shining for the first illuminator 1120 with external circuit connection.It is arranged on the semiconductor base 115
There is the second pad 124 connecting with second illuminator 1140, second pad 124 is used to control with external circuit connection
Make shining for the second illuminator 1140.Therefore, first illuminator 1120 and the second illuminator 1140 can pass through different controls
Signal processed independently works.
Accordingly, described image generating unit 16 includes diffusion part 161 and patterning portion 162.The diffusion part 161 is corresponding
First light emitting region 102 of light-source structure 100 is arranged, for sending out the first illuminator 1120 described in the first light emitting region 102
The first beam spread out forms the flood beam of optical power detection.The of the 162 corresponding light source structure 100 of patterning portion
Two light emitting regions 122 setting, for passing through the second light beam that second illuminator 1140 issues described in the second light emitting region 122
The optical microstructures 163 being correspondingly arranged replicate the light beam group that the second illuminator 1140 of multiple irregular distributions issues, and
It is unfolded within the scope of preset expanded- angle and forms the spot pattern for being incident upon and being randomly distributed on measured target object.The figure
Case light beam, which is incident upon on measured target object, to be formed by pattern and can generate corresponding deformation because of the change in depth of measured target object, is led to
The change in shape situation for crossing the predetermined pattern that analysis is incident upon on measured target object can obtain the three-dimensional letter of the measured target object
Breath.
As shown in figure 15, the 14th embodiment of the utility model provides a kind of sensing device 50, is used to sense quilt
Survey the spatial information of object.The spatial information includes but is not limited to the three-dimensional information on measured target object surface, measured target
Object location information in space, the dimension information etc. of measured target object other 3 D stereos letters relevant to measured target object
Breath.The spatial information of the measured target object sensed can be used for identifying measured target object or construct the three-dimensional of measured target object
Three-dimensional model.
The sensing device 50 include the optical projection mould group 81 as provided by above-mentioned tenth to the 13rd embodiment and
Sense mould group 500.The optical projection mould group 81 carries out sensing identification for projecting in particular beam to measured target object.It is described
Sensing mould group 500 is used to sense the specific image that the optical projection mould group 81 projects on measured target object and by analysis institute
State the correlation space information of the tested subject matter of specific image acquisition.
In the present embodiment, the sensing device 50 is to sense the three-dimensional information on measured target object surface and identify accordingly
The 3D face authentification device of measured target object identity.
The particular beam includes the flood beam of even intensity and can project default figure on measured target object
The pattern beam of case.The sensing mould group 500 according to the image that the flood beam sensed is formed on measured target object come
Identify whether close measured target object is face.The sensing mould group 500 is according to the pattern beam sensed tested
The change in shape of the predetermined pattern projected on object is to analyze the three-dimensional information on measured target object surface and accordingly to quilt
It surveys object and carries out face recognition.
As shown in figure 16, the 15th embodiment of the utility model provides a kind of equipment 60, such as mobile phone, notebook electricity
Brain, tablet computer, touch-control interaction screen, door, the vehicles, robot, automatic numerical control lathe etc..The equipment 60 includes at least one
Sensing device 50 provided by a above-mentioned 14th embodiment.The equipment 60 is used for the sensing knot according to the sensing device 50
Fruit executes corresponding function to correspond to.The corresponding function includes but is not limited to unlock after identifying user's identity, payment, starting
The mood of user is judged using depth learning technology after preset application program, avoidance, identification user's countenance and is good for
Any one or more in health situation.
In the present embodiment, the sensing device 50 is to sense the three-dimensional information on measured target object surface and identify accordingly
The 3D face authentification device of measured target object identity.The equipment 60 is the mobile phone equipped with the 3D face authentification device, notes
Electric terminals, door, the vehicles, safety check, the entry and exit such as this computer, tablet computer, touch-control interaction screen etc. are related to passing in and out permission
Equipment.
Compared with existing 3D senses optics module, optical module 1 provided by the utility model, optical projection mould group
11, sensing device 50 and equipment 60 are partially deflected to reduce whole mould group along the thickness of projecting direction by carrying out projecting light path
Degree is conducive to design using the slimming of the various equipment of the mould group.
In the description of this specification, reference term " embodiment ", " certain embodiments ", " schematically implementation
What the description of mode ", " example ", " specific example " or " some examples " etc. meant to describe in conjunction with the embodiment or example
Particular features, structures, materials, or characteristics are contained at least one embodiment or example of the utility model.In this explanation
In book, schematic expression of the above terms are not necessarily referring to identical embodiment or example.Moreover, the specific spy of description
Sign, structure, material or feature can be combined in any suitable manner in any one or more embodiments or example.
The foregoing is merely the better embodiments of the utility model, are not intended to limit the utility model, it is all
It is practical new to should be included in this for made any modifications, equivalent replacements, and improvements etc. within the spirit and principles of the utility model
Within the protection scope of type.
Claims (10)
1. a kind of optical projection mould group, it is characterised in that: for projecting the pattern beam with predetermined pattern to measured target object
On sensed, comprising:
VCSEL light source, for providing light beam；With
Optical module, including incident side and light emission side, the incident side and the light emission side are adjacent two sides；
Wherein, the VCSEL light source issues light beam to the incident side, and the optical module is to the light beam from VCSEL light source
Transmission direction be deflected to the second direction different from the first direction from first direction, and the light field of light beam is carried out again
Arrangement forms the pattern beam that can project predetermined pattern, and the pattern beam transmitted in a second direction is finally thrown from the light emission side
It is shot out, to reduce the thickness of entire optical projection mould group in this second direction.
2. optical projection mould group as described in claim 1, which is characterized in that the optical module includes reflecting surface, described anti-
Face is penetrated by realizing that incident beam is deflected to second direction from first direction to reach by total reflection to light beam, or, the reflection
Face is provided with reflective coating, and the light beam of projection is deflected to second direction from first direction by the reflex of reflective coating.
3. optical projection mould group as claimed in claim 2, which is characterized in that the angle between the reflecting surface and first direction
It is 45 degree.
4. optical projection mould group as described in claim 1, which is characterized in that the vertical second direction of the first direction.
5. optical projection mould group as claimed in claim 2, which is characterized in that the optical module includes optical path-deflecting portion and figure
Case generating unit, the optical path-deflecting portion are used to deflect the transmission direction from the light beam of the VCSEL light source from first direction
For second direction, to reduce thickness of the entire optical projection mould group on the final projecting direction of light beam, the pattern generation portion is used
Rearrangement is carried out in the light field to light beam to form the pattern beam that can project predetermined pattern.
6. optical projection mould group as claimed in claim 5, which is characterized in that the optical module further comprises light beam adjustment
Portion, for being adjusted to light beam；The optical path-deflecting portion includes reflecting prism, the reflecting prism include along projecting light path according to
Incident side surface, reflecting surface and the light emission side surface of secondary setting, the light beam adjustment section include with optical alignment and/or expanding
The optical texture of effect, the optical texture are formed directly into the incident side surface and/or light emission side surface of the reflecting prism
On；Or
The optical path-deflecting portion includes reflecting prism, and the reflecting prism includes the incident side table set gradually along projecting light path
Face, reflecting surface and light emission side surface, the light beam adjustment section include the optical texture patch for having optical alignment and/or expanding effect
Piece, the optical texture patch are bonded on the incident side surface and/or light emission side surface of reflecting prism；Or
The optical path-deflecting portion includes reflecting prism, and the reflecting prism includes the incident side table set gradually along projecting light path
Face, reflecting surface and light emission side surface, the light beam adjustment section include the separate lenses for having optical alignment and/or expanding effect,
The lens correspond to the incident side surface of reflecting prism and/or the setting of light emission side surface, the lens and can move along projecting light path；
Or
The optical path-deflecting portion includes reflecting mirror, and the reflecting surface of the reflecting mirror changes the direction of projecting light path to realize that optical path is inclined
Turn, the light beam adjustment section includes the separate lenses for having optical alignment and/or expanding effect, the incident side of corresponding reflecting mirror
And/or light emission side setting；Or
The optical path-deflecting portion includes reflecting prism, and the reflecting prism includes the incident side table set gradually along projecting light path
Face, reflecting surface and light emission side surface, the light beam adjustment section include the separate lenses for having optical alignment and/or expanding effect,
The lens correspond to the incident side surface setting of reflecting prism, and the lens can be moved along projecting light path.
7. the optical projection mould group as described in any one of claim 5 or 6, it is characterised in that: the pattern generation portion is logical
Predetermined pattern can be projected to the light field progress rearrangement of incident beam to be formed by crossing the optical microstructures being correspondingly arranged
Pattern beam, the pattern generation portion are the individual optical elements for being formed with the optical microstructures, are arranged inclined in the optics
Transfer part deflects the light emission side after light beam；Or
The pattern generation portion is the light on the light emission side surface after being formed directly into the deflection optical portion deflection light beam
Learn micro-structure；Or
The pattern generation portion carries out rearrangement to the light field of incident beam to be formed by the optical microstructures being correspondingly arranged
The pattern beam of predetermined pattern can be projected, the pattern generation portion is the Individual optical member for being formed with the optical microstructures
The incident side in the deflection optical portion is arranged in and between the light beam adjustment section and optical path-deflecting portion in part；Or
The pattern generation portion is the optical microstructures being formed directly on the reflecting surface in the deflection optical portion, is incident to
The formation of rearrangement light field can project light beam on reflecting surface under the action of the optical microstructures while being reflected
The pattern beam of predetermined pattern projects out.
8. optical projection mould group as described in claim 1, which is characterized in that the light beam from the VCSEL light source is described
Path in optical module along first direction transmission is longer than the path transmitted in a second direction.
9. optical projection mould group as claimed in claim 5, which is characterized in that the VCSEL light source is that the wide face type of single hole is vertical
Cavity surface emitting lasers, the wide face type VCSEL of single hole are the uniform area source of luminous intensity, and the pattern generation portion will be described
The uniform light field that light source issues carries out rearrangement and forms the pattern beam that can project irregular pattern；Or
The VCSEL light source be array VCSEL, including be formed in be randomly distributed on the same semiconductor base it is multiple
VCSEL luminescence unit, can project the spot pattern of irregular distribution, and the pattern generation portion copies multiple described irregular
The spot pattern of distribution simultaneously is unfolded and is formed to be incident upon on measured target object to be randomly distributed within the scope of preset expanded- angle
Spot pattern；Or
The VCSEL light source is array VCSEL, including is formed on the same semiconductor base and uniformly arranges according to same intervals
Multiple VCSEL luminescence units of cloth, can project equally distributed spot pattern, and the pattern generation portion issues the light source
Uniform light field carry out rearrangement and formed that the pattern beam of irregular pattern can be projected；Or
The VCSEL light source is array VCSEL, including is formed on the same semiconductor base and uniformly arranges according to same intervals
Multiple VCSEL luminescence units of cloth, can project equally distributed spot pattern, and the pattern generation portion can also will be along default
The light field of the luminescence unit of direction arrangement mutually merges the candy strip arranged with formation rule；Or
The VCSEL light source includes the second emission part for issuing the second light beam of the first emission part and sending of the first light beam, described
First light beam is used to form the flood beam of optical power detection, and second light beam is used to form to be projected on measured target object
The pattern beam of predetermined pattern out, first emission part and the second emission part are formed on the same semiconductor base and pass through
Different control signals independently work.
10. a kind of sensing device, it is characterised in that: for sensing the three-dimensional information of measured target object comprising such as claim
Optical projection mould group described in any one of 1-9 and sensing mould group, the sensing mould group is for sensing the optical projection mould
Predetermined pattern and the image by analyzing the predetermined pattern that group projects on measured target object obtain the three of tested subject matter
Tie up information.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821480767.9U CN209167789U (en) | 2018-09-08 | 2018-09-08 | A kind of optical projection mould group and sensing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821480767.9U CN209167789U (en) | 2018-09-08 | 2018-09-08 | A kind of optical projection mould group and sensing device |
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| CN209167789U true CN209167789U (en) | 2019-07-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109143756A (en) * | 2018-09-08 | 2019-01-04 | 深圳阜时科技有限公司 | A kind of optical module, optical projection mould group, sensing device and equipment |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109143756A (en) * | 2018-09-08 | 2019-01-04 | 深圳阜时科技有限公司 | A kind of optical module, optical projection mould group, sensing device and equipment |
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