CN206833136U - Project module and depth camera - Google Patents
Project module and depth camera Download PDFInfo
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- CN206833136U CN206833136U CN201720699207.1U CN201720699207U CN206833136U CN 206833136 U CN206833136 U CN 206833136U CN 201720699207 U CN201720699207 U CN 201720699207U CN 206833136 U CN206833136 U CN 206833136U
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Abstract
The utility model embodiment is related to field of photoelectric technology, there is provided one kind projection module and depth camera, projection module include：Base；Light source；The lens supported by an internal stent；The pattern maker supported by an outside support, for forming structured light patterns；Internal stent is independent non-integral structure with outside support, and internal stent and outside support are arranged on base.The projection module is using internal stent carrying lens, pattern maker is carried using outside support, internal stent and outside support are structures independent of each other, the installation of lens and the installation of pattern maker can be carried out respectively, will not mutually be restricted, when will install lensed internal stent and being provided with the outside support of pattern maker on base, the relative position of light source, lens and pattern maker is easily adjusted, installation accuracy is easily controllable, and installation effectiveness is high, beneficial to the miniaturization of depth camera；And the foreign matters such as dust in installation process, chip can be avoided to drop, ensure lens performance.
Description
Technical field
The utility model belongs to field of photoelectric technology, is to be related to a kind of projection module and including the projection more specifically
The depth camera of module.
Background technology
The depth information that structure light depth camera can obtain target realizes 3D scannings, scene modeling and gesture interaction whereby
Etc. function, compared with the RGB camera being widely used at present, depth camera is just progressively paid attention to by all trades and professions.It is for example, sharp
Somatic sensation television game can be realized to reach the two-in-one effect of game and body-building with the combination such as depth camera and TV, computer, Microsoft
ASTRA (the one of Shenzhen Ao Bizhong Micron Technology Co., Ltd of light in KINECT (title of the depth camera of Microsoft's issue), ratio difficult to understand
The name of money depth camera) it is representative therein.In addition, Tango (the development project Project Tango of Google) item of Google
Mesh is directed to bringing depth camera into mobile device, and such as flat board, mobile phone, the usage experience overturned completely is brought with this, such as can
To realize very real AR game experiencings, it can be used to carry out the functions such as indoor map establishment, navigation.
Core component in structure light depth camera is that it projects module, and according to the difference of depth camera species, laser is thrown
The structure of shadow module is also had any different with function, such as the projection module disclosed in Chinese patent application CN201610977172A
For projecting speckle pattern into space to realize structure light depth survey, this pattern optical depth camera be also at present compared with
For ripe and widely used scheme.For speckle, it is maximum the characteristics of be exactly its height irrelevance, that is, need to produce
Random speckle.The projection of pattern light is generally realized using two schemes in existing structure light depth camera.It is a kind of
It is using single light source (such as edge-emitting laser) plus pattern maker (DOE)；Another kind is to use multiple light courcess, such as vertical cavity
Surface-emitting laser (VCSEL) array, then add DOE combination.Latter has the spies such as power height, small volume in itself due to light source
Point will progressively substitute former scheme.No matter which kind of light source is used, corresponding laser all has certain beam divergence angle,
Therefore also need to increase lens for realizing the collimation of light beam or aggregation.
In the design process of projection module, generally requiring consideration projection module may go out in manufacture and installation process
The problem of existing, such as manufacture and alignment error, installation effectiveness etc..Particularly when the volume requirement of projection module is small to can be set to
When entering into mobile electronic device, all parts also will be very small in projection module, so that easily being damaged in installation process
Go bad or be difficult to ensure that higher installation accuracy.Above mentioned problem has to be solved.
Utility model content
The utility model embodiment provides a kind of projection module, it is intended to solves the installation of the projection module of small-sized depth camera
The problem of precision and low installation effectiveness.
To achieve the above object, the technical scheme of the utility model embodiment use is：A kind of projection module, bag are provided
Include：
Base；
Light source, it is arranged on the base, for launching light beam；
Lens, it is arranged in the transmitting light path of the light source, is supported by an internal stent, for collimating the light beam；
Pattern maker, it is arranged on the emitting light path of the lens, is supported by an outside support, for by the light beam
It is split to form structured light patterns；
The internal stent and the outside support be independent non-integral structure, the internal stent and/or it is described outside
Portion's support is arranged on the base.
Further, the light source is vertical cavity surface arrangement of laser emitters, including wafer substrate and is formed at described
Laser emission element in wafer substrate, the wafer substrate are used as the base simultaneously.
Further, the light source is vertical cavity surface arrangement of laser emitters or edge-emitting laser, and the base is
Circuit board or heat dissipation metal bottom plate.
Further, multiple generating lasers in the vertical cavity surface arrangement of laser emitters are arranged in irregular two dimension
To improve the irrelevance of the structured light patterns.
Further, the outside support is sheathed on the outside of the internal stent, and the internal stent and outside support
End be connected with the base；
Or the internal stent is shunk in inside the outside support close to one end of the light source, the internal stent
Periphery wall be connected with the internal perisporium of the outside support, the end of the outside support is connected with the base.
Further, the internal stent is heat dissipation metal support, and the outside support is heat dissipation metal support or plastic cement
Support.
The another object of the utility model embodiment is to provide a kind of depth camera, including：
Above-mentioned any projection module, for emitting structural light pattern；
Module is gathered, for gathering the optical information after the structured light patterns are modulated by target object；
Processor, it is connected with the projection module and the collection module, for carrying out depth according to the optical information
The depth image for reflecting the target object is obtained after calculating.
The projection module using internal stent carrying lens, using outside support carry pattern maker, internal stent and
Outside support is structure independent of each other, rather than is integrally formed, and so, the installation of lens and the installation of pattern maker can divide
Do not carry out, will not mutually restrict, be arranged on lensed internal stent is installed with the outside support for being provided with pattern maker
When on base, the relative position of light source, lens and pattern maker is easily adjusted, and installation accuracy is easily controllable, and installation effectiveness is high,
Beneficial to the miniaturization of depth camera；And the foreign matters such as dust in installation process, chip can be avoided to drop, ensure lens performance.
The another object of the utility model embodiment is to provide another depth camera, including：
Module is projected, for emitting structural light pattern；
Module is gathered, for gathering the optical information after the structured light patterns are modulated by target object；
Processor, it is connected with the projection module and the collection module, for carrying out depth according to the optical information
The depth image for reflecting the target object is obtained after calculating；
The projection module comprises at least：
Light source, for launching light beam；
First lens, it is arranged in the transmitting light path of the light source, is supported by the first internal stent, for collimating the light
Beam；
Pattern maker, it is arranged on the emitting light path of first lens, for the light beam to be split with shape
Into structured light patterns；
The collection module comprises at least：
Second lens, supported by the second internal stent, for collecting the structured light patterns after being modulated by target object
Optical information；
The depth camera also includes：
Base, for carrying projection module, collection module and the processor；
Outside support, it is arranged on the base and is sheathed on the outside of first internal stent and the second internal stent；
The pattern maker is arranged on the outside support.
Further, the openend of the outside support is provided with packaging part, and the packaging part is at least provided with described first
Exit window corresponding to lens and entrance window corresponding with second lens, the pattern maker is provided with the exit window.
Further, first internal stent, the second internal stent, light source and processor are mounted on the base
On.
The depth camera that the utility model embodiment provides has the advantages that compared with prior art：
The projection module of the structure light depth camera carries the first lens using the first internal stent, is held using outside support
Pattern maker is carried, collection module carries the second lens using the second internal stent, and projection module and collection module share one
Outside support, the outside support and the first internal stent and the second internal stent are independent of one another rather than integrally formed structures,
So, the installation of the first lens, pattern maker and the second lens can be carried out respectively, avoid space from limiting, and will not mutually be made
About, and then, installation accuracy is easily controllable, and installation effectiveness is high, beneficial to the miniaturization of depth camera；And installation process can be avoided
The foreign matters such as middle dust, chip drop, and ensure lens performance；Projection module, collection module and processor are arranged at same base
On, outside support will project module and collection module and processor houses wherein, and compact-sized, stability is good, more conducively small-sized
Change design.
Brief description of the drawings
, below will be to embodiment or prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
The required accompanying drawing used is briefly described in description, it should be apparent that, drawings in the following description are only that this practicality is new
Some embodiments of type, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation for the projection module that the utility model embodiment provides；
Fig. 2 is another structural representation for the projection module that the utility model embodiment provides；
Fig. 3 is a kind of Making programme figure for the projection module that the utility model embodiment provides；
Fig. 4 is another Making programme figure for the projection module that the utility model embodiment provides；
Fig. 5 is the first structural representation for the depth camera that the utility model embodiment provides；
Fig. 6 is second of structural representation of the depth camera that the utility model embodiment provides.
Embodiment
In order that the utility model embodiment technical problem to be solved, technical scheme and beneficial effect are more clear bright
In vain, below in conjunction with drawings and Examples, the utility model is further elaborated.It is it should be appreciated that described herein
Specific embodiment only to explain the utility model, is not used to limit the utility model.
It should be noted that when element is referred to as " being fixed on " or " being arranged at " another element, it can be directly another
On one element or it is connected on another element.When an element is known as " being connected to " another element, it can
To be directly to another element or be indirectly connected on another element.
It is to be appreciated that term " length ", " width ", " on ", " under ", "front", "rear", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " top ", " bottom " " interior ", " outer " are to be closed based on orientation shown in the drawings or position
System, it is for only for ease of description the utility model embodiment and simplifies description, rather than instruction or the device or member that imply meaning
Part must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include one or more this feature.In the description of the utility model embodiment, " multiple " are meant that two
Or two or more, unless otherwise specifically defined.
Referring to Fig. 1, the existing projection module provided the utility model embodiment illustrates.
The projection module that the utility model embodiment provides is mainly used in depth camera, specifically includes base 101, light source
102nd, lens 103 and pattern maker 104, pattern maker 104 can be diffraction optical element.Light source 102 is arranged at base
On 101, for launching light beam；Lens 103 are arranged in the transmitting light path of light source 102, are supported, are used for by an internal stent 105
Collimated light beam；Pattern maker 104 is arranged on the emitting light path of lens 103, is supported by an outside support 106, for by light
Beam is split to form structured light patterns；The internal stent 105 and outside support 106 are independent of each other, rather than one
Structure, it will be understood that independent of each other be meant that is not integrative-structure therebetween, but separately formed part, is placed in throwing
Still there may be annexation when in shadow module or still keep disconnected state.Above-mentioned internal stent 105 and outer
Portion's support 106 is arranged on base 101, can be specifically non-interference to be arranged on base 101 or be connected with each other
And on base 101.
The operation principle of the projection module is：The light beam that light source 102 is launched is irradiated to pattern generation after being collimated by lens 103
On device 104, pattern maker 104 is expanded light beam.For example with vertical cavity surface arrangement of laser emitters as light source 102
When, the effect of pattern maker 104 is to replicate the two-dimensional array pattern of light source 102 at double, and multiple two dimensions after duplication
Array pattern by it is adjacent, partly overlap etc. in a manner of outwards launch.Such as light source 102 sends 50 light beams, pattern maker 104 expands
The multiple of beam is 100 times, then the light beam outwards launched by pattern maker 104 is 5000.Expand by pattern maker 104
Light beam after beam will form multiple spots on object after being irradiated on object, the shape of spot by light source 102 two-dimensional arrangements
Shape and the result that expands of pattern maker 104 determine.The optical information of the spot is collected after module collection by processor
Depth analysis is carried out, forms the depth image of object.
The projection module of the utility model embodiment carries lens 103 using internal stent 105, using outside support 106
Pattern maker 104 is carried, internal stent 105 and outside support 106 are structures independent of each other, rather than are integrally formed, this
Sample, the installation of lens 103 and the installation of pattern maker 104 can be carried out respectively, then assembled, are not limited by a space again,
Will not mutually it restrict, the relative position of light source 102, lens 103 and pattern maker 104 is easily adjusted, and installation accuracy is easy to control
System, installation effectiveness is high, beneficial to the miniaturization of depth camera；And the foreign matters such as dust in installation process, chip can be avoided to drop,
Ensure the performance of lens 103.
In the utility model embodiment, light source 102 can be that visible ray, black light be for example infrared, the laser light such as ultraviolet
Source.The type of light source 102 can use edge-emitting laser, vertical cavity surface arrangement of laser emitters can also be used, in order to contract
The volume of small projection module, the present embodiment preferably use the latter.Vertical cavity surface arrangement of laser emitters includes wafer substrate, and
The laser emission element being formed in wafer substrate, the wafer substrate use as base 101 simultaneously, and wafer refers to silicon semiconductor
Silicon wafer used in production of integrated circuits, it is shaped as circle, therefore referred to as wafer.This light source 102 is semiconductor-based
Bottom (wafer) surface directly makes multiple vertical cavity surface arrangement of laser emitters.Vertical cavity surface arrangement of laser emitters is with two dimension
The two-dimension light source of pattern arrangement, overall size only include multiple in micron dimension, each vertical cavity surface arrangement of laser emitters
Sub-light source 102.For example, the size of a vertical cavity surface arrangement of laser emitters about 5mm*5mm, includes tens even up to a hundred
The distance between light source, each light source is in micron dimension, such as 10 μm.In addition, the vertical cavity surface laser hair in the present embodiment
The two-dimensional pattern that multiple sub-light sources of transmitter array are formed is a kind of irregular pattern, and irregular alignment is advantageous in that raising dissipates
The irrelevance of spot pattern, that is, the light for avoiding the light source 102 of regular ranks arrangement from sending occur to disturb and then be not used to depth
Imaging.
As another structure of base 101, it can also use circuit board, have electrical connection effect, and light source 102 is arranged at
On base 101, flickered control by the circuit realiration of base 101.Further, base 101 can also use heat dissipation metal bottom
Plate, it is easy in time export heat caused by light source 102.Certainly, it is further preferred that base 101 is the electricity for having heat sinking function
Road plate, such as radiating piece is directly set on circuit boards, light source 102 is placed on circuit board, while solves electrical connection and radiating
Problem.
In the present embodiment, base 101 be preferably provided with some strength with and meanwhile carry light source 102, internal stent 105 and outer
Portion's support 106.That is, the end of a kind of preferred embodiment as the utility model embodiment, internal stent 105 and outside support 106
Portion is connected to base 101, and outside support 106 is sheathed on the outside of internal stent 105, in order to further strengthen connective stability,
Locating dowel or positioning hole can be set on base 101, and correspondingly, internally the end of support 105 and outside support 106 is set
Positioning hole or locating dowel are put, its stability is strengthened by the grafting of positioning hole and locating dowel.Certainly can also by screw and
Stud is connected, bonding, welding etc., or two kinds of connected modes coordinate etc..Internal stent 105 can also and outside support
Connect, then be installed in the lump on base 101 in advance between 106.
In this configuration, internal stent 105 can receive substantial amounts of illumination and then heating, therefore preferably use heat dissipation metal
Material makes, and outside support 106 can use plastic material, or equally use metal material, but so can slightly increase weight.
It is close as internal stent 105 and another fixed form of outside support 106, internal stent 105 with reference to figure 2
One end of light source 102 can be shunk in inside outside support 106, without being directly connected with base 101, the periphery of internal stent 105
Wall is connected with the internal perisporium of outside support 106, can be specifically glue bonding, welding, clamping etc., the end of outside support 106
Portion is connected with base 101.Outside support 106 first can so be sheathed on to the outside of internal stent 105, then by outside support
106 are arranged on base 101, and this internal stent 105 is not connected with base 101, therefore highly can do smaller, can fix
Lens 103 are simultaneously easily installed.For this structure, when internal stent 105 is shorter, internal stent 105 and outside support
106 can collect a large amount of luminous energy and generate heat, therefore internal stent 105 and outside support 106 are both preferably heat dissipation metal material system
Make.The medium that internal stent 105 and outside support 106 connect is preferably also the good material of thermal diffusivity.
In the present embodiment, lens 103 can be that simple lens 103 can also be lens combination, it might even be possible to be lenticule
Array.Lens 103 are generally circular, therefore internal stent 105 is usually cylinder.The shape of outside support 106 is given birth to pattern
Grow up to be a useful person 104 shape adapt to, pattern maker 104 for it is circular when, outside support 106 for cylinder, pattern maker 104 for side
During shape, outside support 106 is square.
With reference to figure 3, the utility model embodiment further provides for a kind of manufacture method for projecting module, including following steps
Suddenly：
In step s 11, there is provided base, and light source is set to launch light beam on base；
In the step s 21, lens are arranged in internal stent with collimated light beam；
In step S31, by pattern maker support mounted externally to form structured light patterns；
In step S41, internal stent and outside support are arranged on base.
Specifically, a kind of implementation as step S11, setting the step of light source is to launch light beam can be with base
So carry out：Multiple vertical cavity surface arrangement of laser emitters are first generated in wafer substrate；Then cutting crystal wafer substrate, obtain more
Individual independent vertical cavity surface arrangement of laser emitters；Wherein, wafer substrate is used as base simultaneously.
As step S11 another implementation, light source can be installed on metallic heat radiating plate or circuit board, now
Metallic heat radiating plate or circuit board are as base.
With further reference to Fig. 4, after step S11 is carried out, step S12 is carried out, i.e.,：Light source detection and the bottom for being mounted with light source
Seat detection.Specifically, light source detection mainly includes bad point detection, power detection etc.；The detection content of base is included but not
It is limited to whether the precision that light source is installed is up to standard, whether light source optical axis is vertical with base etc..For vertical cavity surface generating laser battle array
Row, light source are directly generated in semiconductor base, and the detection process of light source and base can be before wafer cutting or after cutting
Carry out；In certain embodiments, it is also necessary to which the light source after cutting is packaged.For ordinary light source, light source can be first provided simultaneously
Light source detection is carried out, then enters line light source installation and base detection.
As a kind of step S21 implementation, lens are arranged in internal stent and typically connected using glue, also may be used
Think other any fixed forms.After step S21 is carried out, step S22, lens detection are carried out.Detection to lens includes pair
The detection such as the outward appearances of lens, performance.
In step S31, the mounting means of pattern maker can be the connected modes such as glue, screw thread, welding, specifically may be used
To set connecting portion around pattern maker, connected, be threadedly coupled using glue, welded etc. mode by connecting portion with it is outside
Support connects.
In step S41, the step that internal stent and outside support are arranged on base can be carried out so：First by
Portion's support is arranged on base, then carries out focusing test, then outside support is socketed from the outside of internal stent and is arranged on bottom
On seat, connection between internal stent and base can be glue connect, be threadedly coupled, locating dowel connects etc., outside support and
The connection of base can also use aforesaid way.Also another connected mode can be used, internal stent is first socketed in outside branch
On the inside of frame and fixed, at this moment internal stent is shunk in inside outside support, then outside support is carry into internal stent and is arranged on bottom
On seat, then carry out focusing test.
For focusing, there can be following two ways：The first, internally support during floor installation with constantly adjusting
Carry out focusing test simultaneously, until reach collimating effect it is optimal when stop adjustment to internal stent and base.Second, lens
Connection with internal stent is adjustable connection, for example is threadedly coupled, now by being adjusted to the position of lens in focussing process
It is whole to reach optimal collimating effect.
Further, after step S41 is carried out, step S42 is carried out, projects module whole detection.Testing content includes throwing
Whether structure light optical axis that shadow module is launched is vertical with base, whether structured light patterns meet requirement etc..
In the present embodiment, S11~S31 order can flexibly change, light source, the Installation And Test and image of lens
The installation of maker can be carried out simultaneously, to improve efficiency.
Based on above-mentioned projection module, the utility model further provides for a kind of depth camera, with reference to figure 5, as depth phase
The first embodiment of machine：
The depth camera includes above-mentioned projection module 10a, and its structure and operation principle repeat no more, in addition to collection mould
Group 20a and the processor 30a being connected with projection module 10a and collection module 20a, projection module 10a are used for emitting structural light figure
Case；Collection module 20a is used to gather the optical information after structured light patterns are modulated by target object；Processor 30a is used for basis
Optical information obtains the depth image for reflecting target object after carrying out depth calculation.
Further, processor 30a can be integrated on a mainboard 40a, 20a points of projection module 10a and collection module
The interface 50a that She You be connected with mainboard 40a, interface 50a can be FPC interfaces.Mainboard 40a refers generally to circuit board, such as
PCB or other supports, for the plate body connected and fixed each module and offer circuit connect.
In the present embodiment, RGB camera 60a can also be set up, for obtaining the coloured image of target object.Project module
10a, collection module 20a and RGB camera 60a are arranged in same depth camera plane, and on same baseline, this
Sample is designed to facilitate registering between post depth image and coloured image.Project module 10a, collection module 20a and RGB phase
Machine 60a corresponds to a thang-kng window 70a respectively.
As a kind of embodiment, light source is infrared laser light source, and structured light patterns are infrared laser speckle pattern, and pattern is in
Distribution of particles, relatively uniform but have very high local irrelevance, the local irrelevance refers in pattern each sub-regions all
With higher uniqueness, in case structure light interferes.Correspondingly, it is corresponding with projection module 10a to gather module 20a
Infrared camera, generally comprise an imaging len and the sensor for receiving imaging beam.Processor 30a is received by adopting
After the speckle pattern that collection module 20a is collected, enter one by calculating the deviation value between speckle pattern and reference speckle pattern
Step obtains depth image.In other embodiments, Depth Imaging, the utility model can also be carried out using visible ray or ultraviolet light
It is not limited.
In the present embodiment, project module 10a, collection module 20a, processor 30a, mainboard 40a and RGB camera 60a by
One housing 80a is encapsulated, and corresponding thang-kng window 70a is arranged on housing 80a.
As a kind of improvement of the present utility model, another depth camera is additionally provided, with reference to figure 6, as depth camera
Second of embodiment：
There is provided a kind of depth camera (in order to distinguish the depth camera of the first above-mentioned embodiment, can be referred to as " structure herein
Optical depth camera "), including projection module 10b, module 20b is gathered, the processing being connected with projection module 10b and collection module 20b
Device 30b, and camera pedestal.Projection module 10b, collection module 20b, processor 30b are mounted on camera pedestal 40b.Throw
Shadow module 10b is used for emitting structural light pattern；Collection module 20b is used to gather the light after structured light patterns are modulated by target object
Learn information；Processor 30b is used for the depth image that acquisition reflection target object after depth calculation is carried out according to optical information.Its
In, projection module 10b is comprised at least：For launching the light source 102b of light beam；Be arranged in light source 102b transmitting light path
One lens 103b, it is supported by the first internal stent 105b, for collimated light beam；It is arranged at the first lens 103b emitting light path
On pattern maker 104b, for light beam to be split to form structured light patterns.Collection module 20b is comprised at least：The
Two lens 203b, it is supported by the second internal stent 205b, for light of the collection structure light pattern after being modulated by target object
Information is learned, should also include being used for the sensor for gathering light beam.Above-mentioned projection module 10b, collection module 20b, processor 30b are all provided with
Put inside an outside support 106b, that is, being provided with the outside of the first internal stent 105b and the second internal stent 205b outer
Portion support 106b, outside support 106b are equally installed on camera pedestal 40b.Project module 10b pattern maker 104b
It is arranged on outside support 106b.Outside support 106b and the first internal stent 105b and the second internal stent 205b is that
This independent rather than integrally formed structure.
It can be seen that the outside support 106b in the second embodiment is different from the outside support 106b in first embodiment
It is that it is used not only for carrying pattern maker 104b, also houses collection module 20b and processor 30b wherein, and projective module
Group 10b, collection module 20b and processor 30b are arranged on same camera pedestal 40b, make total optical depth camera knot
Structure is more compact ingenious.In addition, outside support 106b and the first internal stent 105b and the second internal stent 205b are only each other
Vertical rather than integrally formed structure, the first lens 103b, pattern maker 104b and the second lens 203b installation can be distinguished
Carry out, will not mutually restrict, and then, installation accuracy is easily controllable, and installation effectiveness is high.
Further, outside support 106b openend is provided with packaging part 50b, packaging part 50b at least provided with it is first saturating
Exit window 501b corresponding to mirror 103b and entrance window 502b corresponding with the second lens 203b, pattern maker 104b are arranged on this
At exit window 501b.Specifically, exit window 501b can be open window, and pattern maker 104b is set directly at the opening
Place；Exit window 501b can also be a transparency window, and pattern maker 104b is shunk on the inside of the transparency window.Entrance window 502b is preferably
Transparency window, the second lens 203b are shunk on the inside of the transparency window.
It is further preferred that the first internal stent 105b, the second internal stent 205b, light source 102b, processor 30b pacify
Loaded on camera pedestal 40b, to simplify structure, beneficial to the miniaturization of camera.
Further, the projection module 10b of the structure light depth camera can have what the first above-mentioned embodiment provided
Module 10a other corresponding constructions and optical property are projected, are gathered in module 20b and processor 30b and above-mentioned first embodiment
Collection module 20a it is identical with processor 30a, not repeat specification herein.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (10)
1. project module, it is characterised in that including：
Base；
Light source, it is arranged on the base, for launching light beam；
Lens, it is arranged in the transmitting light path of the light source, is supported by an internal stent, for collimating the light beam；
Pattern maker, it is arranged on the emitting light path of the lens, is supported by an outside support, for the light beam to be carried out
Beam splitting is to form structured light patterns；
The internal stent is independent non-integral structure, the internal stent and outside support peace with the outside support
On the base.
2. projection module as claimed in claim 1, it is characterised in that the light source is vertical cavity surface arrangement of laser emitters,
Including wafer substrate and the laser emission element being formed in the wafer substrate, the wafer substrate is used as the bottom simultaneously
Seat.
3. as claimed in claim 1 projection module, it is characterised in that the light source be vertical cavity surface arrangement of laser emitters or
Person's edge-emitting laser, the base are circuit board or heat dissipation metal bottom plate.
4. projection module as claimed in claim 2 or claim 3, it is characterised in that in the vertical cavity surface arrangement of laser emitters
Multiple generating lasers are arranged to improve the irrelevance of the structured light patterns in irregular two dimension.
5. projection module as claimed in claim 1, it is characterised in that the outside support is sheathed on outside the internal stent
Side, and the end of the internal stent and outside support is connected with the base；
Or the internal stent is shunk in inside the outside support close to one end of the light source, outside the internal stent
Perisporium is connected with the internal perisporium of the outside support, and the end of the outside support is connected with the base.
6. projection module as claimed in claim 1, it is characterised in that the internal stent is heat dissipation metal support, described outer
Portion's support is heat dissipation metal support or plastic rubber bracket.
7. depth camera, it is characterised in that including：
Projection module described in any one of claim 1~6, for emitting structural light pattern；
Module is gathered, for gathering the optical information after the structured light patterns are modulated by target object；
Processor, it is connected with the projection module and the collection module, for carrying out depth calculation according to the optical information
The depth image for reflecting the target object is obtained afterwards.
A kind of 8. depth camera, it is characterised in that including：
Module is projected, for emitting structural light pattern；
Module is gathered, for gathering the optical information after the structured light patterns are modulated by target object；
Processor, it is connected with the projection module and the collection module, for carrying out depth calculation according to the optical information
The depth image for reflecting the target object is obtained afterwards；
The projection module comprises at least：
Light source, for launching light beam；
First lens, it is arranged in the transmitting light path of the light source, is supported by the first internal stent, for collimating the light beam；
Pattern maker, it is arranged on the emitting light path of first lens, is tied for the light beam to be split with being formed
Structure light pattern；
The collection module comprises at least：
Second lens, supported by the second internal stent, for collecting light of the structured light patterns after being modulated by target object
Learn information；
The depth camera also includes：
Base, for carrying projection module, collection module and the processor；
Outside support, it is arranged on the base and is sheathed on the outside of first internal stent and the second internal stent；
The pattern maker is arranged on the outside support.
9. depth camera as claimed in claim 8, it is characterised in that the openend of the outside support is provided with packaging part, institute
Packaging part is stated at least provided with exit window corresponding with first lens and entrance window corresponding with second lens, it is described go out
Penetrate and the pattern maker is provided with window.
10. depth camera as claimed in claim 8, it is characterised in that first internal stent, the second internal stent, light
Source and processor are mounted on the base.
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