CN209690705U - Projection arrangement and its light source and equipment - Google Patents
Projection arrangement and its light source and equipment Download PDFInfo
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- CN209690705U CN209690705U CN201821945547.9U CN201821945547U CN209690705U CN 209690705 U CN209690705 U CN 209690705U CN 201821945547 U CN201821945547 U CN 201821945547U CN 209690705 U CN209690705 U CN 209690705U
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Abstract
The utility model discloses a kind of projection arrangements, including semiconductor substrate；Light source, the light source includes multiple luminescence units for being used to emit light beam being arranged on the semiconductor substrate, the dot matrix set relative coefficient that the multiple luminescence unit is formed is greater than or equal to 0.3 and less than 1, and the dot matrix set can be divided into multiple dot matrix subsets, the relative coefficient of at least one dot matrix subset is less than 0.2；Optical module, the beam replication for emitting the luminescence unit is at multiple light beams.The invention also discloses a kind of light source and equipment.The utility model projection arrangement and its light source and equipment have preferable user experience.
Description
Technical field
The utility model relates to optical field more particularly to a kind of projection arrangement and its light source and equipment.
Background technique
With technological progress and people's living standard raising, including mobile phone, the electronic equipment including tablet computer etc. has
More new functions, such as: face recognition unlock takes this to obtain better user experience.In order to realize the above functions, equipment needs
The two dimension that can obtain object or three-dimensional information are wanted to realize that characteristics of objects identifies.
Utility model content
The purpose of the utility model is to provide a kind of projection arrangement that can be used for characteristics of objects identification and its light source and equipment.
The one aspect of the utility model provides a kind of projection arrangement, including semiconductor substrate；Light source, the light source packet
Include multiple luminescence units for being used to emit light beam being arranged on the semiconductor substrate, the point that the multiple luminescence unit is formed
Battle array set relative coefficient is greater than or equal to 0.3 and less than 1, and the dot matrix set can be divided into multiple dot matrix subsets, at least
The relative coefficient of one dot matrix subset is less than 0.2；Optical module, the beam replication for emitting the luminescence unit
At multiple light beams.
Optionally, the corresponding luminescence unit number of every bit a period of time collection is not less than 9 or every bit a period of time collection is corresponding
Luminescence unit number accounts for the luminescence unit entire quantity ratio not less than 10%.
Optionally, relative coefficient is greater than 0.3 between the dot matrix subset, wherein the correlation between the dot matrix subset
Property evaluation include will the dot matrix subset translation, rotation or mirror image after with other dot matrix subsets carry out relative coefficient meter
It calculates, or the dot matrix subset and other dot matrix subsets is translated, or the dot matrix subset obtained after rotation or mirror image carries out correlation
Property coefficient calculates.
Optionally, the multiple luminescence unit shares a semiconductor substrate or the setting of the multiple luminescence unit exists
On multiple semiconductor substrates.
Optionally, the luminescence unit includes VCSEL or one or more of LED or LD.
Optionally, the optical module includes diffraction optical element and/or lens, and the lens are collimation lens.
Optionally, the projection arrangement further includes driving circuit, work needed for the driving circuit provides the luminescence unit
Make electric current.
The one aspect of the utility model also provides a kind of light source, including multiple settings on a semiconductor substrate for sending out
The luminescence unit of irradiating light beam, the dot matrix set that the luminescence unit is formed can be divided into multiple dot matrix subsets, told dot matrix subset
Relative coefficient between conjunction is greater than or equal to 0.3 and less than 1, and the corresponding luminescence unit number of every bit a period of time collection is not less than 9
A or corresponding luminescence unit number of every bit a period of time collection accounts for the luminescence unit entire quantity ratio not less than 10%, at least
The relative coefficient of one dot matrix subset is less than 0.2.
The one aspect of the utility model additionally provides a kind of equipment, and the equipment includes projection arrangement and reception device,
The projection device has on the light beam to external object of speckle patterns, at least partly light beam and quilt of external object reflection
The reception device receives, and the projection arrangement includes multiple luminescence units, the corresponding two-dimensional pattern of the multiple luminescence unit
With correlation, and the two-dimensional pattern can be divided into multiple sub- two-dimensional patterns with correlation, the sub- two-dimensional pattern pair
9 luminescence units should be no less than, at least one described sub- two-dimensional pattern does not have correlation, and the projection arrangement can project tool
On the light beam to external object for having the speckle patterns of the two-dimensional pattern of multiple correspondences luminescence unit, external object reflects extremely
Small part light beam is received by the reception device.
Compared to the prior art, the utility model projection arrangement and its light source and equipment can be used in characteristics of objects identification,
With preferable user experience.
Detailed description of the invention
Fig. 1 is the schematic diagram of one embodiment of the utility model projection arrangement；
Fig. 2 is the schematic diagram of one embodiment of the utility model projection arrangement；
Fig. 3 is the schematic diagram of one embodiment of the utility model projection arrangement；
Fig. 4 is the schematic diagram of one embodiment of the utility model projection arrangement；
Fig. 5 is the schematic diagram of one embodiment of the utility model projection arrangement；
Fig. 6 is the schematic diagram of one embodiment of the utility model projection arrangement；
Fig. 7 is the schematic diagram of relative coefficient schematically illustrated；
Fig. 8 is the schematic diagram of relative coefficient schematically illustrated；
Fig. 9 is the schematic diagram of one embodiment of the utility model projection arrangement；
Figure 10 is the speckle patterns schematic diagram that the projection device of Fig. 9 is formed；
Figure 11 is the schematic diagram of one embodiment of the utility model device.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
It clearly and completely describes, it is clear that described embodiment is only the utility model a part of the embodiment, rather than whole realities
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art institute without creative efforts
The every other embodiment obtained, fall within the protection scope of the utility model.
Referring to Fig. 1, the one aspect of the utility model discloses a kind of projection arrangement, projection arrangement 10 includes 20 He of light source
Optical module 30.The light source 20 transmits a light beam to the optical module 30, the light beam through 30 optimization of optical module at
It can be irradiated in external object, such as be irradiated on face after reason.In the present embodiment, the light beam can be infrared light.This reality
With in novel other embodiments, the light beam that the light source 20 emits can be visible light, ultraviolet light, electromagnetic wave, sound wave, ultrasonic wave
One of or it is a variety of.
Generally there are also at least one reception devices to cooperate the projection arrangement 10, for receiving at least partly by external right
As the light beam of reflection, to obtain the depth information of external object.
The light source 20 includes multiple luminescence units 21, and the arranged distribution of the multiple luminescence unit 21 can be described as shining again
The array of unit 21.The luminescence unit 21 may include LED (Light Emitting Diode), VCSEL (Vertical
Cavity Surface Emitting Laser, vertical cavity surface emitting laser) or one of LD (Laser Diode) or
It is several.
In some embodiments of the utility model, the projection arrangement 10 further includes substrate (substrate) 22, described more
A luminescence unit 21 is arranged on the substrate 22.The luminescence unit 21 is in that the two-dimensional pattern with certain correlation is distributed in
On the substrate 22.The optical module 30 is arranged on the bed course of the substrate 22, light described in 30 face of optical module
Multiple luminescence units 21 in source 20 are arranged.In the present embodiment, the substrate 22 is semiconductor substrate.Other implementations of the utility model
In example, the substrate 22 can also be that glass substrate, metal substrate etc., the substrate 22 can be described as substrate, substrate etc. again.This reality
With it is novel other or change embodiment in, the multiple luminescence unit 21 shares a substrate, or is distributed on different substrate.
The utility model other or change embodiment in, the projection arrangement 10 further includes driving circuit, and the driving circuit is used for
Operating current is provided to the luminescence unit 21.
In the present embodiment, the optical module 30 includes diffraction optical element (DOE, Diffraction Optical
Element).In the utility model others embodiment, the optical module 30 can also include being arranged in diffraction optical element
Lens or lens group between light source 20.The light beam that the optical module 30 can be used for emitting the luminescence unit 21 carries out
Beam splitting processing, i.e., replicate incident beam and be extended to multiple light beams.The light beam that the luminescence unit 21 emits is through the optics
Multiple light beams are copied into after component 30.Regard each luminescence unit 21 as point light source, beam emitted is by the optical module
30 are copied into multiple hot spots, then the optical module 30 can replicate the two-dimensional pattern that the multiple luminescence unit 21 has
At the multiple corresponding patterns being made of hot spot.Referring to Fig. 2, in a change embodiment of the utility model, the optics
Component 30 includes diffraction optical element 31 and lens 32.The lens 32 can be convex lens or concavees lens, can be used for converging
Poly- or divergent beams.The diffraction optical element 31 is used for multiple beam replications that light source 30 emits and projects.
The two-dimensional pattern that the distribution of the luminescence unit 21 is formed is known as dot matrix set, part of luminescence unit 21 is right
The two-dimensional pattern answered is known as dot matrix subset, and the corresponding two-dimensional pattern of luminescence unit 21 other than dot matrix subset is " described a period of time
The supplementary set of collection " or supplementary set.The dot matrix set generally includes two or more dot matrix subsets.By the luminescence unit 21
The hot spot that the light beam of transmitting is formed in some plane of space be known as " luminous point ", multiple luminous points have and its corresponding to
The almost the same two-dimensional pattern of the two-dimensional pattern that multiple distributions of luminescence unit 21 are formed.
In the embodiment of the utility model, the correlation of the dot matrix set is higher, for example, the dot matrix set
Relative coefficient is greater than or equal to 0.3.The dot matrix set can be divided into multiple dot matrix subsets, at least one described dot matrix subset
Correlation it is lower, the relative coefficient of for example, at least one dot matrix subset is less than 0.2.It should be noted that above-mentioned pass
It does not need to be that uniquely, the dot matrix set can be there are many dividing, so as to obtain difference in the division of dot matrix subset
Dot matrix subset.In other embodiments of the utility model, the relative coefficient of the dot matrix set be greater than or equal to 0.3 and
Less than 1.
In other embodiments of the utility model, in dot matrix subset of at least one the described relative coefficient less than 0.2
Including 21 quantity of luminescence unit be not less than all 21 quantity of luminescence unit 10%.
In other embodiments of the utility model, in dot matrix subset of at least one the described relative coefficient less than 0.2
Including 21 quantity of luminescence unit be not less than 9.
For convenience of describing and be clearly understood that, by establishing two-dimensional plane coordinate system, such as X-axis-Y-axis rectangular coordinate system,
The two-dimensional pattern (that is: dot matrix set or dot matrix subset) that the multiple luminescence unit 21 can be made to be formed is located at a W
In the region for arranging * H row (W, H are positive integer).
In the present embodiment, the region is rectangular array, wherein each rectangle is known as a block, each block pair
0 or 1 two kind of numerical value are answered, wherein it is 1 that the block with the luminescence unit 21, which corresponds to numerical value, without the luminescence unit 21
It is 0 that block, which corresponds to numerical value,.Wherein, i-th column, jth row block value be R (i, j) (1≤i, j≤n).
Correlation calculations are carried out to the region, the available luminescence unit 21 in the rectangular array R is corresponding
Two-dimensional pattern relative coefficient f.
In the present embodiment, the relative coefficient f of a dot matrix set or dot matrix subset can be used following formula and calculate:
P={ Ro, R1..., RN}
R′n=T (Rn)
H, W, N, n are positive integer, 0≤i≤W, 0≤j≤H in formula.
Wherein:
A: number of effective points ratio；
Average correlation coefficient；
P: region RnThe set of (0≤n≤N)；
S: the entire area including two-dimensional pattern；
| |: the operator of number of effective points (not repeating) in statistical regions set；
R0: meet the subregion of predetermined condition；
Rn: by R0Corresponding subregion traverses obtain and R in region-wide S0Relative coefficient fnMore than or equal to pre-
The subregion for determining threshold value thr is Rn(0 < n≤N, N are positive integer), such as: as thr=0.3, fn≥0.3；
N:fnThe subregion number of >=thr (such as 0.3)；
R′n: RnBy the transformed result of T；
fn: RnAnd R0Between relative coefficient；
T: the transform operators such as translation, rotation, mirror image；
H: subregion R0Or RnThe line number of (0 < n≤N, N is positive integer)；
W: subregion R0Or RnThe columns of (0 < n≤N, N is positive integer)；
The T converts one or more of the displacement, rotation, mirror symmetry that may include but be not limited in two-dimensional surface and becomes
It changes.In the present embodiment, to subregion RnIt does not convert, i.e. R 'n=Rn.In the present embodiment, above-mentioned RnTraversal in definition, at this
In can be understood as R0Corresponding subregion is mobile on any direction in entire area to be not less than itself ruler of luminescence unit 21
The distance of very little size.In addition, because between subregion or there is overlapping situation, therefore need to count number of effective points and its ratio.On
It states in formula, R0For the subregion for meeting preset condition, R0It traverses described in the corresponding entire area S of entire luminescence unit 21 and calculating
Subregion R0With entire entire area S in addition to R0The related coefficient of other parts in addition, it is assumed that there are N number of and R0Between correlation
Coefficient is greater than or equal to the subregion of default relative coefficient threshold value, is expressed as R1..., RN, then in the S of entire area and sub-district
Domain R0Between related coefficient be greater than or equal to preset correlation coefficient number threshold value all subregion set P={ R0, R1..., RN,
There is correlation between subregion in the set P.In the present embodiment, the relative coefficient threshold value of the preset condition is
0.3.In the utility model other embodiments, the preset condition can have other settings.
It should be noted that the utility model is not limited thereto, above-mentioned parameter, formula and definition are exemplary theory
It is bright, the group cooperation of some or all of selected section or whole parameter, formula or definition or these parameters, formula or definition
For relative coefficient calculation method, the scope of the utility model is belonged to.Those skilled in the art are in the scope of the utility model
It is interior above-described embodiment to be changed, modified, replaced and deformed, it fall within the protection scope of the utility model.
In the present embodiment, R0The predetermined condition of satisfaction can be, such as, but not limited to, region R0Interior corresponding luminescence unit
21 number is not less than the 10% of the quantity of whole luminescence units 21.In other embodiments of the utility model, R0What is met is pre-
Fixed condition can also be that the number of corresponding luminescence unit 21 in its region is no less than 9.In the utility model other embodiments,
R0The predetermined condition of satisfaction can also have different settings, such as 21 quantity of corresponding luminescence unit can have different numerical value,
Or 21 quantity of luminescence unit accounts for the ratios of whole 21 quantity of luminescence unit and can also be different.
In addition, when region, S corresponds to dot matrix set, subregion Rn meets condition in some embodiments of the utility model
9 are no less than for the corresponding light-emitting component quantity in inside；When region S corresponding points a period of time collection, subregion Rn meets condition for inside
Corresponding light-emitting component quantity is no less than 3.
In the present embodiment, Rn fn>=0.3 corresponding subregion, the utility model other or change embodiment in, Rn is also
It can have different settings, such as the subregion of corresponding f >=0.5.
In the present embodiment, as 0≤f < 0.3, corresponding region and/or subregion (dot matrix set or dot matrix subset) are related
Property it is lower or do not have correlation.As f >=0.3, corresponding region and/or subregion have apparent correlation.Above-mentioned parameter
S, R0, Rn etc. is with respect to for its object calculated.For example, region-wide S is exactly all hairs for dot matrix set
The two-dimensional pattern region that light unit 21 is formed；For dot matrix subset, region-wide S is exactly the hair in the dot matrix subset
The corresponding two-dimensional pattern region of light unit 21.
Referring to Fig. 3, dot matrix set is located in the region S of 8 column x10 rows in one embodiment of the utility model, choose
The matrix that upper part 8 arranges x5 row is subregion R0, and the matrix that lower part 8 arranges x5 row is subregion R1, and subregion R0 and R1 are corresponding
21 numbers of luminescence unit are 13.At this point, according to above-mentioned formula, a=1, R1 '=R1, H=5, W=8, the dot matrix set
Relative coefficient f=f1 ≈ 0.7, therefore the dot matrix set relative coefficient is greater than 0.3, it may be said that the region S is corresponding
Dot matrix set there is correlation, and the corresponding pattern interdependency coefficient of the subregion R0 and R1 is less than 0.2, R0 and R1
Corresponding dot matrix subset does not have correlation.
It is different in the utility model other or change embodiment it should be noted that the utility model is not limited thereto
Surely it uses in the calculation method or above-mentioned calculation method of the example above and not necessarily uses formation side of the rectangular array as block
Formula, such as block can be triangle, round, polygon or irregular figure.Above-mentioned formula can also be simplified or be answered
Hydridization.Different rectangular arrays may include two different two-dimensional patterns in above-mentioned correlation description, can also respectively represent
In one two-dimensional pattern partially and fully.It will be appreciated by those skilled in the art that the utility model above-described embodiment is only to show
Example property explanation, the two-dimensional pattern that all luminescence units 21 are formed belong to the utility model with the technical solution of correlation and cover
Range, to be protected disclosed in the utility model specification and by the utility model claims.
The utility model other or change embodiment in, correlation calculations can also use other formula or algorithm, or
Other coordinate systems are set up, such as: polar coordinate system.Generally, matrix, regular polygon grid or its two-dimensional space translation after
Pattern has high correlation.Furthermore, it is to be understood that, the X-Y scheme that will be obtained after the progress multiple copies of two-dimensional pattern
The set of case correlation with higher.
In another embodiment of the utility model, for the correlation of dot matrix set or dot matrix subset can be used following methods into
Row evaluation:
Definition needs to calculate the dot matrix set of correlation or dot matrix subset corresponding region is S；
Defining the subregion for meeting predetermined condition that one arbitrarily chooses is R0；Wherein, meet the subregion R0 of predetermined condition
Such as, but not limited to: it is total that 21 quantity of luminescence unit for including in the subregion R0 accounts for 21 quantity of luminescence unit in the region S
Several ratios is no less than 9 not less than 21 quantity of luminescence unit for including in the 10% or subregion R0.
If the subregion identical or essentially identical with the pattern of R0 is not present along any direction, the pattern of region S is not
With correlation；
If at least there is the subregion identical or essentially identical with the pattern of R0, the pattern of region S along any direction
With correlation.
In another embodiment of the utility model, for the correlation of dot matrix set or dot matrix subset can be used following methods into
Row evaluation:
Definition needs to calculate the dot matrix set of correlation or dot matrix subset corresponding region is S；
The subregion that definition meets predetermined condition is R0；Wherein, the subregion R0 for meeting predetermined condition is such as, but not limited to:
21 quantity of luminescence unit for including in the subregion R0 is not less than luminescence unit 21 total amount of 10% in the region S,
Or 21 quantity of luminescence unit in the subregion R0 including is no less than 9.
Subregion R1 is obtained after the subregion R0 is rotated by a certain angle；Wherein, R1 can be by R0 in its correspondence two
Plane internal rotation where dimension pattern obtains.
If the subregion identical or essentially identical with the pattern of R0 or R1, the figure of region S are not present along any direction
Case does not have correlation；
If at least there is the subregion identical or essentially identical with the pattern of R0 or R1 along any direction, region S's
Pattern has correlation.
Pattern is identical or essentially identical to be can be understood as regarding the position of luminescence unit 21 into a point as in pattern, and 2
30% or more point in the pattern of subregion is overlapped.In other embodiments of the utility model, it is contemplated that luminescence unit 21
Itself having a certain size is radius by the center of circle, predetermined length of certain point when the pattern of 2 sub-regions is compared
Other points in circle are considered and the point is overlapped.
In another embodiment of the utility model, for the correlation of dot matrix set or dot matrix subset can be used following methods into
Row evaluation:
Definition needs to calculate the dot matrix set of correlation or dot matrix subset corresponding region is S；
The subregion that definition meets predetermined condition is R0；Wherein, the subregion R0 for meeting predetermined condition is such as, but not limited to:
10% of 21 quantity of luminescence unit for including in the subregion R0 not less than 21 quantity of luminescence unit in the region S, or
21 quantity of luminescence unit for including in the subregion R0 is no less than 9.
The subregion R0 mirror symmetry is obtained into subregion R1；
If the subregion identical or essentially identical with the pattern of R0 or R1, the figure of region S are not present along any direction
Case does not have correlation；
If at least there is the subregion identical or essentially identical with the pattern of R0 or R1 along any direction, region S's
Pattern has correlation.
In another embodiment of the utility model, the corresponding dot matrix set of two-dimensional pattern that the luminescence unit 21 is formed can
Multiple dot matrix subsets are divided into, after wherein at least one dot matrix subset is by one or more of translation, symmetrical, rotation transformation
It is greater than or equal to 0.3 with the relative coefficient of the dot matrix set, and the correlation of at least one dot matrix subset itself is less than
0.2。
In another embodiment of the utility model, the corresponding dot matrix set of two-dimensional pattern that the luminescence unit 21 is formed can
Be divided into multiple dot matrix subsets, wherein at least one dot matrix subset and other subsets by one of translation, symmetrical, rotation or
The relative coefficient of the dot matrix subset obtained after several transformation is greater than or equal to 0.3, and the phase of at least one dot matrix subset itself
Closing property is less than 0.2.
In another embodiment of the utility model, following methods can be used for the correlation between two dot matrix subsets and carry out
Evaluation:
Definition needs to calculate two dot matrix subset corresponding regions of phase cross correlation for R1 and R2, and the range of subregion R1
Less than or equal to the range of subregion R2；In the embodiment, the range of subregion can be understood as energy in rectangular coordinate system
Enough minimum rectangle areas for accommodating the subregion completely, in other embodiments of the invention, the range of subregion can also be according to need
There is different definition and understanding, belong to the scope of the present invention.
By R1, any direction is traversed within the scope of R2, if R2 along any direction there is no with the pattern of R1 it is identical or
Essentially identical sub- subregion (partial region in subregion is known as sub- subregion), then the pattern of subregion R1, R2 does not have
Correlation；
If at least there is the sub- subregion identical or essentially identical with the pattern of R1, subregion along any direction in R2
The pattern of R1, R2 have correlation.
The present invention other or change embodiment in, the relativity evaluation between the dot matrix subset includes by described a period of time
Collect the carry out relative coefficient calculating after converting by one or more of translation, symmetrical, rotation with other dot matrix subsets,
Or the dot matrix subset and other dot matrix subsets are passed through what one or more of translation, symmetrical, rotation transformation obtained later
Dot matrix subset carries out relative coefficient calculating.
Generally but not be it is necessary, region corresponding to dot matrix subset and its corresponding luminescence unit 21 is in two-dimensional space
The condition for meeting opener and being connected to, and be convex domain.In certain embodiments, the region is sometimes referred to as closed region.If point
It is interior that a period of time concentrates each point to be at least all contained in the presence of a neighborhood, then the dot matrix subset is referred to as opener.If dot matrix subset
In any two o'clock, an all available broken line for fully belonging to the dot matrix subset connects, then claiming the dot matrix subset is connection.
It should be noted that being likely to occur other in the utility model or other technologies data for describing said circumstances
Word, such as, but not limited to: speckle or pattern or two-dimensional pattern or sub- two-dimensional pattern or structured light patterns etc., this field
Technical staff should be understood as the dot matrix set or dot matrix subset of equivalent the utility model.
For ease of description and understand, when referring to the correlation of some two-dimensional pattern, if its correlation is more obvious,
Such as relative coefficient is greater than or equal to 0.3, the utility model specification or claims are sometimes referred to as it with correlation；
If its correlation is lower, such as relative coefficient, less than 0.2, the utility model specification or claims are sometimes referred to as it
Without correlation.It should be understood that when the utility model specification or claims are referred to without correlation not
It centainly represents the two-dimensional pattern or dot matrix subset relative coefficient is 0.
For Fig. 3 of the utility model Figure of description into Fig. 8, small circle represents 21 position of luminescence unit, periphery side
Frame represents semiconductor substrate, for ease of description and understands, some dotted lines or separator bar occurs in attached drawing, these lines are only used for
Illustrate the utility model embodiment, it might not physical presence.
Referring to Fig. 4, in one embodiment of the utility model, the two-dimensional pattern of the multiple formation of luminescence unit 21
Dot matrix set can be divided into the identical or essentially identical dot matrix subset of 6 patterns (rectangle shown in dotted line), the dot matrix set
Relative coefficient is greater than or equal to 0.3, and the relative coefficient of 6 dot matrix subsets itself is less than 0.2.
Referring to Fig. 5, in one embodiment of the utility model, the two-dimensional pattern of the multiple formation of luminescence unit 21
Dot matrix set can be divided into 4 dot matrix subsets (the 2x2 grid that such as dotted line divides), wherein 3 dot matrix subsets are with essentially identical
Two-dimensional pattern, another point a period of time collection have different two-dimensional pattern.The dot matrix set has correlation, relative coefficient
Greater than 0.3 and less than 1；3 in the dot matrix subset do not have correlation, and relative coefficient is less than 0.2.
Referring to Fig. 6, in one embodiment of the utility model, the two-dimensional pattern of the multiple formation of luminescence unit 21
Dot matrix set can be divided into 4 dot matrix subsets (the 2x2 grid that such as dotted line divides), wherein 3 dot matrix subsets are with essentially identical
Two-dimensional pattern, another point a period of time collection have different two-dimensional pattern.The dot matrix set has correlation, described a period of time
1 concentrated does not have correlation.
Referring to Fig. 7, in one embodiment of the utility model, the multiple luminescence unit 21 corresponding dot matrix set tool
There is relevant subregion R0 and R1, the pattern of the subregion R0 and R1 is essentially identical, but the luminous list of the dot matrix set
First 21 quantity share 113, and corresponding 21 quantity of luminescence unit of subregion R0 and R1 shares 24, and number of effective points ratio is 24/
116=0.21 (rounds up, similarly hereinafter), relative coefficient f=af1 < 0.3, therefore the dot matrix set relative coefficient is less than
0.3。
It is understood that number of effective points ratio a may be increased by expanding the size of subregion R0, but also reduce accordingly
The relative coefficient f1 of R0 and R1, so that the relative coefficient f size of final dot matrix set is still less than 0.3.Please refer to figure
8, subregion R0 and R1, which compare to correspond in Fig. 7, has more luminescence units 21, and number of effective points ratio is 40/116=0.34, so
And the relative coefficient f1 of subregion R0 and R1 are smaller, cause the relative coefficient f of entire dot matrix set less than 0.3.
Referring to Fig. 9, in one embodiment of the utility model, the two-dimensional pattern of the multiple formation of luminescence unit 21
Dot matrix set can be divided into 2 dot matrix subsets (the 2x1 grid that such as dotted line divides) with essentially identical two-dimensional pattern, the point
The correlation of battle array set is greater than 0.3, and the correlation of the dot matrix subset is less than 0.2.Wherein, corresponding 60 hairs of each dot matrix subset
The two-dimensional pattern without correlation that light unit 21 is formed.
Referring to Fig. 10, being that the array beam emitted of luminescence unit 21 shown in Fig. 9 is replicated and projected through optical module 30
The speckle pattern formed afterwards, wherein each small circle represents a luminous point.In the described embodiment, the optical module 30 wraps
Diffraction optical element is included, the diffraction optical element replicates the array that the luminescence unit 21 is formed according to 3x3 matrix,
The two-dimensional pattern that each minor matrix box and the multiple luminescence unit 21 are formed is corresponding.
The speckle patterns are irradiated in external object, and be received device receive after, image processor can pass through meter
It calculates the corresponding local displacement of light beam of each spot and obtains corresponding depth coordinate at the spot using triangulation, to obtain
Take the depth information of external object.
In the above-mentioned and other change embodiment of the utility model, the dot matrix subset can have matrix or grid arrangement,
Can not also be according to matrix or grid arrangement, such as can be and be randomly or pseudo-randomly distributed.The shape of dot matrix subset can be square
Shape, round or other qualified shapes.
In the present embodiment, the multiple luminescence unit 21 is on integrated semiconductor substrate.The light source includes VCSEL array
Chip can be bare die, the chip after being also possible to encapsulation.The VCSEL array chip size size can be 3mm*3mm
Or 5mm*5mm comprising the quantity of luminescence unit 12 can arrive several hundred for tens.Above-mentioned being only for example property of data explanation, not
Restriction to the utility model embodiment, the luminescence unit 21 can also integrate on the glass substrate, on metal substrate etc., institute
Stating VCSEL array can according to need the different sizes of manufacture, and 21 quantity of luminescence unit can also have difference.Art technology
Personnel are appreciated that in replacement, the change etc. for above-mentioned technical proposal that need not be made the creative labor, and belong to practical
Novel protected scope.
A kind of light source is also disclosed in the utility model comprising multiple luminescence unit (roundlets in Fig. 8 being disposed on the substrate
Shown in circle), the luminescence unit can be light-emitting component, such as LED, VCSEL or LD.The luminescence unit, which is formed, has correlation
Property dot matrix set, the dot matrix set have at least one do not have correlation dot matrix subset.
A kind of equipment is also disclosed in the utility model, includes that above-mentioned the utility model projects in one embodiment of the equipment
Device 10 or light source, the equipment are such as, but not limited to mobile phone, tablet computer, laptop, monitoring device, mobile unit,
The equipment that smart home device etc. has 3D Object identifying function.
Please refer to Figure 11, in one embodiment of the utility model, equipment 100 includes projection arrangement 101, reception device
102 and accommodate the main body 103 of the projection arrangement 101 and reception device 102.The projection of projection arrangement 101 has spot figure
On the light beam to external object of case, at least partly light beam of external object reflection is received by the reception device 102.The projection
Device 101 and projection arrangement 10 have same structure.The projection arrangement 101 includes multiple luminescence units, described more
The corresponding two-dimensional pattern of a luminescence unit has correlation, and the two-dimensional pattern can be divided into multiple sons two with correlation
Pattern is tieed up, the sub- two-dimensional pattern is corresponding to be no less than 9 luminescence units, at least one described sub- two-dimensional pattern does not have correlation
Property.The projection arrangement 101 can project the light beam of the speckle patterns of the two-dimensional pattern with multiple correspondences luminescence unit
Onto external object.
The main body 103 further includes processor, and the processor can be obtained according to the light beam that reception device 102 receives
The two-dimensional signal and/or depth information of object.For example, processor can pass through the corresponding local position of light beam of each spot of calculating
It moves and obtains corresponding depth coordinate at the spot using triangulation, to obtain the depth information of object.
The light beam can be infrared light, ultraviolet light or visible light.In the present embodiment by taking infrared light as an example, the reception dress
Setting 102 includes infrared sensor, and the projection arrangement 101 includes multiple VCSEL.The main body further includes processor, the place
Reason device can obtain the depth information of object according to the infrared light received.In some embodiments, the main body 103 further includes showing
Display screen and camera, the display screen can be used for showing that picture, the camera can be used for taking pictures or imaging.
In the present embodiment, the equipment 100 obtains the depth information of object using structure light, carries out the three-dimensional feature of object
Identification or 3-D image are drawn.In other embodiments of the utility model, the equipment 100 includes two or multiple receptions
Device 102, according to the light beam that two or more described reception devices 102 receive, the equipment 100 can be according to binocular imaging
The 3-D image of principle rendered object and the depth information for obtaining object.
In other embodiments of the utility model, the projection arrangement 10 and equipment 100 are also used as two dimensional image
It draws or two-dimensional object feature identifies.
Compared to the prior art, the utility model projection arrangement and equipment can obtain subject depth information, rendered object
3-D image has preferable user experience.
Many different embodiments are provided in the description of the utility model or example is used to realize the utility model.When
So, they are merely examples, and purpose does not lie in limitation the utility model.In addition, the utility model can be in different examples
Middle repeat reference numerals and/or reference letter, this repetition are for purposes of simplicity and clarity, itself not indicate to be discussed
Relationship between various embodiments and/or setting.It should be noted that similar label and the letter table in following attached drawing
Show similar terms, therefore, once being defined in a certain Xiang Yi attached drawing, then does not need to carry out into one it in subsequent attached drawing
Step definition and explanation.Description includes 2 and 2 or more as described in " multiple " in the utility model specification and claims
Situation.It should also be noted that, unless otherwise clearly defined and limited, term " setting ", " installation ", " connection " etc. should be done extensively
Reason and good sense solution, for example, it may be fixed setting, is also possible to detachably be arranged, or be integrally provided.For the common skill of this field
For art personnel, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replacement, it should be covered within the scope of the utility model.Term used in claims should not be construed as
Utility model is limited to specific embodiment disclosed in this specification.Therefore, the protection scope of the utility model should be with institute
It states subject to scope of protection of the claims.
Claims (9)
1. a kind of projection arrangement characterized by comprising
Semiconductor substrate；
Light source, the light source includes multiple luminescence units for being used to emit light beam being arranged on the semiconductor substrate, described
The corresponding dot matrix set of multiple luminescence units can be divided into multiple dot matrix subsets, and the relative coefficient between the dot matrix subclass is big
In or be equal to 0.3 and less than 1, and the relative coefficient of at least one dot matrix subset is less than 0.2；
Optical module, the beam replication for emitting the luminescence unit is at multiple light beams.
2. projection arrangement according to claim 1, which is characterized in that the corresponding luminescence unit number of every bit a period of time collection is not
Less than 9 or the corresponding luminescence unit number of every bit a period of time collection accounts for the luminescence unit entire quantity ratio and is not less than
10%.
3. projection arrangement according to claim 1, which is characterized in that the relativity evaluation between the dot matrix subset includes
The dot matrix subset is passed through into the carry out phase after one or more of translation, symmetrical, rotation transformation with other dot matrix subsets
It closes property coefficient to calculate, or the dot matrix subset and other dot matrix subsets is become by one or more of translation, symmetrical, rotation
The dot matrix subset alternatively obtained afterwards carries out relative coefficient calculating.
4. projection arrangement according to claim 1, which is characterized in that the multiple luminescence unit shared one semiconductor-based
Plate or the multiple luminescence unit are arranged on multiple semiconductor substrates.
5. projection arrangement according to claim 1, which is characterized in that the luminescence unit includes VCSEL or LED or LD
One or more of.
6. projection arrangement according to claim 1, which is characterized in that the optical module include diffraction optical element and/
Or lens, the lens are collimation lens.
7. projection arrangement according to claim 1, which is characterized in that the projection arrangement further includes driving circuit, described
Operating current needed for driving circuit provides the luminescence unit.
8. a kind of light source, which is characterized in that including multiple settings on a semiconductor substrate for emitting the luminescence units of light beam,
The dot matrix set that the luminescence unit is formed can be divided into multiple dot matrix subsets, and the relative coefficient between told dot matrix subclass is big
In or be equal to 0.3 and less than 1, and the corresponding luminescence unit number of every bit a period of time collection is not less than 9 or every bit a period of time collection
Corresponding luminescence unit number accounts for the luminescence unit entire quantity ratio and is not less than 10%, at least one dot matrix subset
Relative coefficient is less than 0.2.
9. a kind of equipment, which is characterized in that the equipment includes projection arrangement and reception device, and the projection device has
On the light beam to external object of speckle patterns, at least partly light beam of external object reflection is simultaneously received, institute by the reception device
Stating projection arrangement includes a plurality of light-emitting elements, and the corresponding two-dimensional pattern of the multiple light-emitting component has correlation, and described two
Dimension pattern can mark off at least one sub- two-dimensional pattern for not having correlation, corresponding no less than 9 hairs of the sub- two-dimensional pattern
Light unit, the projection arrangement can project the light beam of the speckle patterns of the two-dimensional pattern with multiple correspondences light-emitting component
Onto external object, at least partly light beam of external object reflection is received by the reception device.
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| CN201821945547.9U CN209690705U (en) | 2018-11-24 | 2018-11-24 | Projection arrangement and its light source and equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109643053A (en) * | 2018-11-24 | 2019-04-16 | 深圳阜时科技有限公司 | Projection arrangement and its light source and equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109643053A (en) * | 2018-11-24 | 2019-04-16 | 深圳阜时科技有限公司 | Projection arrangement and its light source and equipment |
| CN109643053B (en) * | 2018-11-24 | 2021-06-29 | 深圳阜时科技有限公司 | Projection device and light source and equipment thereof |
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