CN109709742A - A kind of structured light projection instrument and 3D camera - Google Patents
A kind of structured light projection instrument and 3D camera Download PDFInfo
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- CN109709742A CN109709742A CN201910020239.8A CN201910020239A CN109709742A CN 109709742 A CN109709742 A CN 109709742A CN 201910020239 A CN201910020239 A CN 201910020239A CN 109709742 A CN109709742 A CN 109709742A
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Abstract
A kind of structured light projection instrument and 3D camera provided by the invention, the structured light projection instrument is by using position is adjustable or the lens arrangement of focus adjustable, realize the adjustable structure projector of patterned optical output, in one mode, infrared speckle dot matrix can be projected, in another mode, it can be with the light output of the strongly continuous distribution of projected light, the function of structured light projection instrument and infrared washers is realized simultaneously, the space and cost of the infrared washers of independence are saved, and is conducive to the Miniaturization Design of 3D camera.
Description
Technical field
The present invention relates to optical projection technical fields, more specifically to a kind of structured light projection instrument and 3D camera.
Background technique
Structure light is one group of system structure being made of projector and camera, is the light letter undetermined with projector projects
It after breath to body surface, is acquired by camera, position and the depth of object is calculated according to the variation of optical signal caused by object
Etc. information, and then restore entire three-dimensional space, be a kind of scheme for realizing 3D camera.
For 3D camera, implementation mainly includes three kinds, first, structure light；Second, the flight time
(Time of Flight, abbreviation ToF)；Third, binocular camera.In consumer electronics field, compare mainstream is structure light side
Case and ToF scheme, the two require the infrared light projection of active, and structure light scheme needs to project infrared speckle, and ToF scheme needs
Project the light output of the strongly continuous distribution of infrared light, i.e. floodlight.Meanwhile the two requires infrared receiving group, that is, receives infrared
CMOS camera.
With reference to Fig. 1, Fig. 1 is the structural schematic diagram of traditional structure light 3 D camera, traditional structure light 3 D camera packet
Include following main devices: speckle dot matrix projector, infrared camera, infrared washers and RGB camera.Due in dark
It is also required to form infrared 2D image in environment, general 3D camera is required additionally to configure an infrared washers, be illuminated
Object in dark, while infrared 2D image is recorded using infrared camera.
But since infrared washers are usually to be made of one or more infrared lasers and diffusion barrier, by
Setting of infrared washers increases the cost and power consumption of entire 3D camera known to this, is unfavorable for the small-sized of 3D camera
Change design.
Summary of the invention
In view of this, to solve the above problems, the present invention provides a kind of structured light projection instrument and 3D camera, technical solution
It is as follows:
A kind of structured light projection instrument, the structured light projection instrument include: the first lens arrangement, and/or are arranged in the knot
Second lens arrangement of the light-emitting window of structure light projector；
The position of first lens arrangement is adjustable or focus adjustable, and the position of second lens arrangement is adjustable or focal length
It is adjustable；
Wherein, by adjusting position or the focal length of first lens arrangement, or the position of adjusting second lens arrangement
It sets or focal length, so that the structured light projection instrument launches speckle dot matrix or the continuously distributed light output of light intensity.
Preferably, in above structure light projector, the structured light projection instrument further include: laser emitter, light beam are whole
Shape device, diffraction grating and optical projection lens；
The laser emitter is for launching laser；
The beam shaping is used to expand the laser and collimation processing；
The diffraction grating is used to carry out diffraction to the beam shaping treated laser；
The optical projection lens are used for that treated that laser projects to the diffraction grating；
Wherein, the optical projection lens or the beam shaping are first lens arrangement, the optical projection
The position of lens or the beam shaping is adjustable or focus adjustable.
Preferably, in above structure light projector, the beam shaping includes: optical beam-expanding device and optical alignment
Device；
Wherein, the optical beam-expanding device to the laser that the laser emitter issues for carrying out expanding processing；
The Collimation optics are used for that treated that laser carries out collimation processing to the optical beam-expanding device.
Preferably, in above structure light projector, second lens arrangement is voice coil motor；
Wherein, the voice coil motor is located at the light-emitting window of the structured light projection instrument, and the position of the voice coil motor is solid
It is fixed constant.
Preferably, in above structure light projector, the voice coil motor includes:
Pedestal；
Set gradually lower elastic slice, magnet, coil, camera lens carrier, upper elastic slice, pressing plate, upper retainer plate on the base
And Antimagnetic hood；
The camera lens being fixed on the camera lens carrier；
Wherein, by the way that electric current is added in the coil, the magnetic line of force is generated, to push the magnet and the camera lens to carry out
It is mobile, and then the position of the camera lens is adjusted, so that the structured light projection instrument launches speckle dot matrix or light intensity is continuously distributed
Light output.
Preferably, in above structure light projector, second lens arrangement is liquid lens；
Wherein, by changing the curvature of the liquid lens to change the focal length of the liquid lens.
Preferably, in above structure light projector, the liquid lens includes:
Semiconductor substrate；
The insulating layer of the semiconductor substrate surface is set；
The liquid that the insulating layer deviates from the semiconductor substrate side is set.
Preferably, in above structure light projector, the liquid lens further include: voltage control circuit；
One end of the voltage control circuit is connect with the liquid, and the other end is connect with the semiconductor substrate；
Wherein, different voltage conditions are provided by the voltage control circuit, to change the curvature of the liquid lens,
And then change the focal length of the liquid lens.
A kind of 3D camera, comprising: structured light projection instrument as described in any one of the above embodiments.
Compared to the prior art, what the present invention realized has the beneficial effect that
The structured light projection instrument under certain condition, passes through the position of the first lens arrangement of adjusting and/or the second lens arrangement
It sets or focal length, the light that the structured light projection instrument can be made to launch focuses, and then export clearly speckle dot matrix, Huo Zheke
So that the light that the structured light projection instrument is launched is out of focus, that is to say, that the size of each point becomes larger, when the density of point is enough
Gao Shi, all the points will join together after out of focus, and then become the continuously distributed light output of light intensity.
That is, the structured light projection instrument is by toggling the position of the first lens arrangement and/or the second lens arrangement
It sets or focal length, so that it may realize toggling between transmitting speckle dot matrix and the continuously distributed light output of light intensity, i.e., simultaneously
The function of realizing structured light projection instrument and infrared washers, save the infrared washers of independence space and
Cost.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the structural schematic diagram of traditional structure light 3 D camera；
Fig. 2 is a kind of structural schematic diagram of structured light projection instrument provided in an embodiment of the present invention；
Fig. 3 is a kind of output light schematic diagram of structured light projection instrument provided in an embodiment of the present invention；
Fig. 4 is another output light schematic diagram of structured light projection instrument provided in an embodiment of the present invention；
Fig. 5 is another structural schematic diagram of structured light projection instrument provided in an embodiment of the present invention；
Fig. 6 is another structural schematic diagram of structured light projection instrument provided in an embodiment of the present invention；
Fig. 7 is the structural schematic diagram of voice coil motor provided in an embodiment of the present invention；
Fig. 8 is the structural schematic diagram of liquid lens provided in an embodiment of the present invention；
Fig. 9 is a kind of curvature condition schematic diagram of liquid lens provided in an embodiment of the present invention；
Figure 10 is another curvature condition schematic diagram of liquid lens provided in an embodiment of the present invention；
Figure 11 is the structural schematic diagram of liquid lens provided in an embodiment of the present invention；
Figure 12 is a kind of structural schematic diagram of 3D camera provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
With reference to Fig. 2, Fig. 2 is a kind of structural schematic diagram of structured light projection instrument provided in an embodiment of the present invention, the structure
Light projector 21 includes: the first lens arrangement 22, and/or the second lens of the light-emitting window of the structured light projection instrument 21 are arranged in
Structure 23；
The position of first lens arrangement 22 is adjustable or focus adjustable, the position of second lens arrangement 23 is adjustable or
Focus adjustable；
Wherein, by adjusting position or the focal length of first lens arrangement 22, or adjusting second lens arrangement 23
Position or focal length so that the structured light projection instrument 21 launches speckle dot matrix or the continuously distributed light output of light intensity.
In this embodiment, first lens arrangement 22 includes but is not limited to the 21 composition portion of structured light projection instrument
Point lens arrangement, first lens arrangement 22 is that position is adjustable or the lens arrangement of focus adjustable.
It, can be to the structured light projection instrument 21 when the position of first lens arrangement 22 is adjustable or focus adjustable
Output light carries out focus adjustment, and in turn, with reference to Fig. 3, Fig. 3 is a kind of output of structured light projection instrument provided in an embodiment of the present invention
Light schematic diagram can be such that the output light of the structured light projection instrument 21 is focused in any case, so that the final knot
The output light of structure light projector 21 is in speckle dot matrix；With reference to Fig. 4, Fig. 4 is structured light projection instrument provided in an embodiment of the present invention
Another output light schematic diagram can be such that the output light of the structured light projection instrument 21 carries out out of focus in another case,
That is the size of each point becomes larger, when the density of point is sufficiently high, all the points will join together after out of focus, in turn
Become the continuously distributed light output of light intensity.
It follows that the structured light projection instrument 21 is by toggling position or the focal length of the first lens arrangement 22, just
Toggling between transmitting speckle dot matrix and the continuously distributed light output of light intensity may be implemented, i.e., realize structure light throwing simultaneously
The function of shadow instrument and infrared washers saves the space and cost of the infrared washers of independence.
In this embodiment, when the position of the lens arrangement of 21 component part of structured light projection instrument and focal length are immutable
When, second lens arrangement 23 can also be set in the light-emitting window of the structured light projection instrument 21, second lens arrangement 23 is
Position is adjustable or the lens arrangement of focus adjustable.
It, can be to the structured light projection instrument 21 when the position of second lens arrangement 23 is adjustable or focus adjustable
Output light carries out focus adjustment, in turn, as shown in figure 3, in any case, can make the output of the structured light projection instrument 21
Light is focused, so that the output light of the final structured light projection instrument 21 is in speckle dot matrix；As shown in figure 4, in another feelings
Under condition, the output light of the structured light projection instrument 21 can be made to carry out out of focus, that is to say, that the size of each point becomes larger, when
When the density of point is sufficiently high, all the points will join together after out of focus, and then become the continuously distributed light output of light intensity.
It follows that the structured light projection instrument 21 is by toggling position or the focal length of the second lens arrangement 23, just
Toggling between transmitting speckle dot matrix and the continuously distributed light output of light intensity may be implemented, i.e., realize structure light throwing simultaneously
The function of shadow instrument and infrared washers saves the space and cost of the infrared washers of independence.
It should be noted that working as position or the focal length of first lens arrangement 22 and second lens arrangement 23
When adjusting, position or the focal length of first lens arrangement 22 and second lens arrangement 23 can be adjusted, simultaneously to change
The patterned optical output for becoming the structured light projection instrument 21 also can choose any one lens arrangement and adjust its position or focal length,
To change the patterned optical output of the structured light projection instrument.
As can be seen from the above description, a kind of structured light projection instrument provided in an embodiment of the present invention, it is adjustable by using position
Or the lens arrangement of focus adjustable, realize that the adjustable structure projector of patterned optical output can project infrared in one mode
Speckle dot matrix can realize simultaneously structured light projection instrument in another mode with the light output of the strongly continuous distribution of projected light
With the function of infrared washers, the space and cost of the infrared washers of independence are saved.
It further, is another structural schematic diagram of structured light projection instrument provided in an embodiment of the present invention with reference to Fig. 5, Fig. 5,
The structured light projection instrument further include: laser emitter 51, beam shaping 52, diffraction grating 53 and optical projection lens 54；
The laser emitter 51 is for launching laser；
The beam shaping 52 is used to expand the laser and collimation processing；
The diffraction grating 53 is used to carry out diffraction to the beam shaping 52 treated laser；
The optical projection lens 54 are used for that treated that laser projects to the diffraction grating 53；
Wherein, the optical projection lens 54 or the beam shaping 52 are first lens arrangement, the optics
The position of projection lens 54 or the beam shaping 52 is adjustable or focus adjustable.
In this embodiment, the laser emitter 51 includes but is not limited to laser array, for launching laser.
When the lens arrangement of the structured light projection instrument component part can be first lens arrangement, lens knot
Structure is that position is adjustable or the lens arrangement of focus adjustable.
In embodiments of the present invention, with the optical projection lens 54 or the beam shaping 52 for first lens
It is illustrated for structure.
It, can be to institute when the position of the optical projection lens 54 or the beam shaping 52 is adjustable or focus adjustable
The output light for stating structured light projection instrument, which carries out focus adjustment, in any case, can make the structured light projection instrument in turn
Output light is focused, so that the output light of the final structured light projection instrument is in speckle dot matrix；It in another case, can be with
Carry out the output light of the structured light projection instrument out of focus, that is to say, that the size of each point becomes larger, when the density of point is enough
Gao Shi, all the points will join together after out of focus, and then become the continuously distributed light output of light intensity.
It follows that the structured light projection instrument is by toggling the optical projection lens or the beam shaping
Position or focal length, so that it may realize toggling between transmitting speckle dot matrix and the continuously distributed light output of light intensity, i.e., together
When realize the function of structured light projection instrument and infrared washers, save the space of the infrared washers of independence
And cost.
Further, as shown in figure 5, the beam shaping 52 includes: optical beam-expanding device 521 and Collimation optics
522；
Wherein, the laser that the optical beam-expanding device 521 is used to issue the laser emitter 51 carries out expanding processing；
The Collimation optics 522 are used for that treated that laser carries out collimation processing to the optical beam-expanding device 521.
Further, when the position of the lens arrangement of the structured light projection instrument component part and immutable focal length or its
When component part does not have lens arrangement, the second lens arrangement, reference can also be set in the light-emitting window of the structured light projection instrument
Fig. 6, Fig. 6 are another structural schematic diagram of structured light projection instrument provided in an embodiment of the present invention, the structured light projection instrument packet
It includes: light source；The nanocomposite optical chip or coding structure photomask blank of the light source light-emitting window are set；It is arranged in the nanometer light
It learns chip or the coding structure photomask blank deviates from the projection lens of the light source side.
The position of its projection lens of the component part of the structured light projection instrument and focal length are immutable, therefore can be in the knot
The light-emitting window of structure light projector is arranged the second lens arrangement, and second lens arrangement is that position is adjustable or the lens of focus adjustable
Structure, here, being illustrated with the adjustable lens arrangement in position.
Optionally, second lens arrangement 23 includes, but are not limited to voice coil motor；
Wherein, the voice coil motor is located at the light-emitting window of the structured light projection instrument 21, and the position of the voice coil motor
It immobilizes.
In this embodiment, adjustable by the position Lai Shixian voice coil motor (Voice Coil Motor, abbreviation VCM)
Mirror structure, concrete principle are as follows:
It is adjustable with the position for realizing the second lens arrangement 23 by the position for adjusting camera lens in voice coil motor, and then to described
The output light of structured light projection instrument 21, which carries out focus adjustment, can make the defeated of the structured light projection instrument 21 in any case
Light is focused out, so that the output light of the final structured light projection instrument 21 is in speckle dot matrix；It in another case, can be with
Carry out the output light of the structured light projection instrument 21 out of focus, that is to say, that the size of each point becomes larger, when the density foot of point
When enough high, all the points will join together after out of focus, and then become the continuously distributed light output of light intensity.
It further, is the structural schematic diagram of voice coil motor provided in an embodiment of the present invention, the voice coil with reference to Fig. 7, Fig. 7
Motor includes:
Pedestal 61；
Lower elastic slice 62, magnet 63, coil 64, camera lens carrier 65, the upper elastic slice 66, pressure being successively set on the pedestal 61
Plate 67, upper retainer plate 68 and Antimagnetic hood 69；
The camera lens being fixed on the camera lens carrier 65；
Wherein, by the way that electric current is added in the coil 64, the magnetic line of force is generated, to push the magnet 63 and the camera lens
It is moved, and then adjusts the position of the camera lens, so that the structured light projection instrument launches speckle dot matrix or light intensity is continuous
The light output of distribution.
In this embodiment, the structure of the voice coil motor is only illustrated by way of example, and is not construed as limiting.
Wherein, the voice coil motor immobilizes in the position of the light-emitting window of the structured light projection instrument, when in coil 64
When not being passed through electric current, camera lens will not be moved, and when being passed through electric current in coil 64, can generate the magnetic line of force, to push the magnet 63
It is moved with the camera lens, the electric current being passed through is bigger, and camera lens amount of movement is bigger.When camera lens amount of movement is sufficiently large, speckle point
Battle array will be out of focus, is changed into the continuously distributed light output of light intensity.
So, the size of electric current in coil is passed through by controlling, so that it may the position of camera lens is adjusted, to realize speckle point
Being switched fast between battle array and the continuously distributed light output of light intensity.
It should be noted that only being illustrated in the embodiment of the present invention with voice coil motor, it is not defined,
The adjustable lens arrangement in its position is within the scope of the present invention.
Further, when the position of the lens arrangement of the structured light projection instrument component part and immutable focal length, also
The second lens arrangement can be set in the light-emitting window of the structured light projection instrument, second lens arrangement is that position is adjustable or burnt
Away from adjustable lens arrangement, illustrated herein with the lens arrangement of focus adjustable.
Optionally, second lens arrangement 23 is liquid lens；
Wherein, by changing the curvature of the liquid lens to change the focal length of the liquid lens.
In this embodiment, the lens arrangement of focus adjustable is realized by liquid lens, concrete principle is as follows:
By adjusting the curvature of liquid in liquid lens to realize the focus adjustable of the second lens arrangement, and then to the knot
The output light of structure light projector carries out focus adjustment, in any case, can make the output light of the structured light projection instrument into
Line focusing, so that the output light of the final structured light projection instrument is in speckle dot matrix；In another case, the knot can be made
The output light of structure light projector carries out out of focus, that is to say, that and the size of each point becomes larger, when the density of point is sufficiently high, institute
It will join together a little after out of focus, and then become the continuously distributed light output of light intensity.
It further, is the structural schematic diagram of liquid lens provided in an embodiment of the present invention, the liquid with reference to Fig. 8, Fig. 8
Lens include:
Semiconductor substrate 71；
The insulating layer 72 on 71 surface of semiconductor substrate is set；
The liquid 73 that the insulating layer 72 deviates from 71 side of semiconductor substrate is set.
In this embodiment, the liquid lens is that varifocal lens arrangement is realized using electrowetting-on-dielectric method,
Its shape for changing liquid by applied voltage, and then change its focal length, it can be in the case where being not required to be equipped with mechanical part
Realize the focus adjustable of lens, structure is simple.
With reference to Fig. 9, Fig. 9 is a kind of curvature condition schematic diagram of liquid lens provided in an embodiment of the present invention, that is, in one kind
Under voltage conditions, speckle dot matrix is focused, normal to export speckle dot matrix.
With reference to Figure 10, Figure 10 is another curvature condition schematic diagram of liquid lens provided in an embodiment of the present invention, that is,
Under another voltage conditions, speckle dot matrix is out of focus, and dot matrix joins together, with the continuously distributed light of output intensity.
It further, is the structural schematic diagram of liquid lens provided in an embodiment of the present invention, the liquid with reference to Figure 11, Figure 11
Body lens include: voltage control circuit 101；
One end of the voltage control circuit 101 is connect with the liquid 73, and the other end and the semiconductor substrate 71 connect
It connects；
Wherein, different voltage conditions are provided by the voltage control circuit 101, to change the song of the liquid lens
Rate, and then change the focal length of the liquid lens.
It should be noted that only being illustrated in the embodiment of the present invention with liquid lens, it is not defined,
The lens arrangement of its focus adjustable is within the scope of the present invention.
Based on the above-mentioned whole embodiments of the present invention, a kind of 3D camera is additionally provided in an alternative embodiment of the invention, is joined
Figure 12 is examined, Figure 12 is a kind of structural schematic diagram of 3D camera provided in an embodiment of the present invention, and the 3D camera includes: above-mentioned
The structured light projection instrument, the i.e. distinguishable speckle dot matrix projector of mode in attached drawing 11.
The structured light projection instrument realizes that patterned optical output is adjustable by using position is adjustable or the lens arrangement of focus adjustable
Structure projector can project infrared speckle dot matrix in one mode, in another mode, can project light intensity company
The light output of continuous distribution, i.e., realize the function of structured light projection instrument and infrared washers simultaneously, save an independence
The space of infrared washers and cost, and be conducive to the Miniaturization Design of 3D camera.
A kind of structured light projection instrument provided by the present invention and 3D camera are described in detail above, answered herein
With a specific example illustrates the principle and implementation of the invention, the explanation of above example is only intended to help to manage
Solve method and its core concept of the invention；At the same time, for those skilled in the art, according to the thought of the present invention,
There will be changes in specific embodiment and application range, in conclusion the content of the present specification should not be construed as to this hair
Bright limitation.
It should be noted that all the embodiments in this specification are described in a progressive manner, each embodiment weight
Point explanation is the difference from other embodiments, and the same or similar parts between the embodiments can be referred to each other.
For the device disclosed in the embodiment, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, phase
Place is closed referring to method part illustration.
It should also be noted that, herein, relational terms such as first and second and the like are used merely to one
Entity or operation are distinguished with another entity or operation, without necessarily requiring or implying between these entities or operation
There are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to contain
Lid non-exclusive inclusion, so that the element that the process, method, article or equipment including a series of elements is intrinsic,
It further include either the element intrinsic for these process, method, article or equipments.In the absence of more restrictions,
The element limited by sentence "including a ...", it is not excluded that in the process, method, article or equipment including the element
In there is also other identical elements.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (9)
1. a kind of structured light projection instrument, which is characterized in that the structured light projection instrument includes: the first lens arrangement, and/or setting
In the second lens arrangement of the light-emitting window of the structured light projection instrument；
The position of first lens arrangement is adjustable or focus adjustable, and the position of second lens arrangement is adjustable or focal length can
It adjusts；
Wherein, by adjusting position or the focal length of first lens arrangement, or adjust second lens arrangement position or
Focal length, so that the structured light projection instrument launches speckle dot matrix or the continuously distributed light output of light intensity.
2. structured light projection instrument according to claim 1, which is characterized in that the structured light projection instrument further include: laser
Transmitter, beam shaping, diffraction grating and optical projection lens；
The laser emitter is for launching laser；
The beam shaping is used to expand the laser and collimation processing；
The diffraction grating is used to carry out diffraction to the beam shaping treated laser；
The optical projection lens are used for that treated that laser projects to the diffraction grating；
Wherein, the optical projection lens or the beam shaping are first lens arrangement, the optical projection lens
Or the beam shaping position is adjustable or focus adjustable.
3. structured light projection instrument according to claim 2, which is characterized in that the beam shaping includes: optical beam-expanding
Device and Collimation optics；
Wherein, the optical beam-expanding device to the laser that the laser emitter issues for carrying out expanding processing；
The Collimation optics are used for that treated that laser carries out collimation processing to the optical beam-expanding device.
4. structured light projection instrument according to claim 1, which is characterized in that second lens arrangement is voice coil motor；
Wherein, the voice coil motor is located at the light-emitting window of the structured light projection instrument, and the position of the voice coil motor is fixed not
Become.
5. structured light projection instrument according to claim 4, which is characterized in that the voice coil motor includes:
Pedestal；
Set gradually lower elastic slice on the base, magnet, coil, camera lens carrier, upper elastic slice, pressing plate, upper retainer plate and anti-
Magnetic cover；
The camera lens being fixed on the camera lens carrier；
Wherein, by the way that electric current is added in the coil, the magnetic line of force is generated, to push the magnet and the camera lens to be moved
It is dynamic, and then the position of the camera lens is adjusted, so that the structured light projection instrument launches speckle dot matrix or light intensity is continuously distributed
Light output.
6. structured light projection instrument according to claim 1, which is characterized in that second lens arrangement is liquid lens；
Wherein, by changing the curvature of the liquid lens to change the focal length of the liquid lens.
7. structured light projection instrument according to claim 6, which is characterized in that the liquid lens includes:
Semiconductor substrate；
The insulating layer of the semiconductor substrate surface is set；
The liquid that the insulating layer deviates from the semiconductor substrate side is set.
8. structured light projection instrument according to claim 7, which is characterized in that the liquid lens further include: voltage control
Circuit；
One end of the voltage control circuit is connect with the liquid, and the other end is connect with the semiconductor substrate；
Wherein, different voltage conditions are provided by the voltage control circuit, to change the curvature of the liquid lens, in turn
Change the focal length of the liquid lens.
9. a kind of 3D camera characterized by comprising such as the described in any item structured light projection instrument of claim 1-8.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110346940A (en) * | 2019-07-05 | 2019-10-18 | 深圳市光鉴科技有限公司 | Project structured light device and 3D camera |
| CN110361870A (en) * | 2019-07-29 | 2019-10-22 | 深圳阜时科技有限公司 | A kind of optical module, transmitting unit, sensing mould group and electronic equipment |
| WO2020147622A1 (en) * | 2019-01-15 | 2020-07-23 | 深圳市光鉴科技有限公司 | Optical projection system and method |
| CN112066907A (en) * | 2019-06-11 | 2020-12-11 | 深圳市光鉴科技有限公司 | Depth imaging device |
| CN112068144A (en) * | 2019-06-11 | 2020-12-11 | 深圳市光鉴科技有限公司 | Light projection system and 3D imaging device |
| US11422262B2 (en) | 2019-01-15 | 2022-08-23 | Shenzhen Guangjian Technology Co., Ltd. | Switchable diffuser projection systems and methods |
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