CN208190776U - A kind of Dynamic IR light-supplementing system and the video camera with it - Google Patents
A kind of Dynamic IR light-supplementing system and the video camera with it Download PDFInfo
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- CN208190776U CN208190776U CN201820643705.9U CN201820643705U CN208190776U CN 208190776 U CN208190776 U CN 208190776U CN 201820643705 U CN201820643705 U CN 201820643705U CN 208190776 U CN208190776 U CN 208190776U
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Abstract
The utility model discloses a kind of Dynamic IR light-supplementing system and with its video camera, the Dynamic IR light-supplementing system includes supplementary lighting sources and light filling optical path component, light filling optical path component includes lens and DMD, supplementary lighting sources are arranged on the central axis of Dynamic IR light-supplementing system, for supplementary lighting sources in central axial direction between lens and DMD, central axis is parallel with the optical axis of the lens assembly of video camera；DMD is arranged on the emitting light path of supplementary lighting sources, the projecting direction of the emergent light of supplementary lighting sources is adjusted in a manner of the emergent light for reflecting supplementary lighting sources, by the emergent light of supplementary lighting sources through lens when DMD is rotated to first angle, the emergent light of supplementary lighting sources is projected except lens when DMD is rotated to second angle, the numerical value of first angle and second angle opposite number each other；Supplementary lighting sources project the emergent light on lens and are irradiated to wait image on object.The utility model can reach dynamic light filling and the uniform purpose of light filling, acquire clearer low-light (level) image.
Description
Technical field
The utility model relates to security monitoring technologies, more particularly to a kind of Dynamic IR light-supplementing system and have it
Video camera.
Background technique
Low-light (level) monitoring is generally referred to as the monitoring of the occasion at (such as night etc.) lower to intensity of illumination.Low-light (level) monitoring
The always focal point of safety-security area reaches in low light situations in the mode that low-light (level) occasion generallys use infrared light filling
Obtain the purpose of image." infrared light filling " refers under low-illumination scene, usually using the sightless infrared light of naked eyes as light
Source lighting makes video camera that can still get image under low-illumination scene.Current infrared light filling technology mainly has following several
Kind mode:
One is camera lens collar formula light fillings, i.e., around the several infrared LED lamps of setting around camera lens, under low-illumination scene
All infrared LED lamps are opened simultaneously, to achieve the effect that low-light (level) light filling.This mode light filling angle is smaller, and is easy to produce
Green hand's torch effect, picture central area light filling is stronger, and picture neighboring area light filling is weaker.
Another kind is point light source light filling, i.e., disposes 2 to 5 infrared LED lamps, each infrared LED lamp respectively in camera lens two sides
The preceding angled different lens of installation, lens guide light to irradiate different regions respectively, expand infrared light filling with this to reach
The purpose of region area.But the average light filling intensity of such unit area just substantially reduces, and in several infrared lamp light fillings area
The overlapping region light filling intensity in domain is stronger, and picture will appear the non-uniform situation of light filling.
The infrared light filling scheme of both the above is specifically included there are common deficiency:
1. light filling is uneven.
2. the contradiction of light filling region area Yu light filling intensity can not be overcome.That is, if to increase light filling area surface
Product, the intensity of illumination of infrared LED lamp must increase, then flashlight will occur in the overlapping region luminous intensity in infrared lamp light filling region
Cylinder effect.If avoiding flashlight effect, light filling intensity cannot be too high, and the light filling of such fringe region is with regard to wretched insufficiency.
3. special light filling processing can not be done to the special area in image, for example there is street lamp to open in low-light (level) monitoring scene
When the case where opening, the flashlight effect near street lamp is just very serious at this time, and at this time if carrying out infrared light filling, street lamp is nearby
Clearly image can not be got.
4. can not accomplish dynamic light filling, for example there are the vehicle travels that open high beam in low-light (level) monitoring scene, this
The infrared light filling of Shi Jinhang will also result in flashlight effect.
" flashlight effect " refers to certain part of camera picture, and light irradiation is stronger, like light beam irradiation, people is allowed to feel
Feel that picture light beam is uneven.
Thus, it is desirable to have a kind of technical solution come overcome or at least mitigate in the drawbacks described above of the prior art at least one
It is a.
Utility model content
The purpose of this utility model is to provide a kind of Dynamic IR light-supplementing systems to overcome or at least mitigate the prior art
At least one of drawbacks described above.
To achieve the above object, the utility model provides a kind of Dynamic IR light-supplementing system, Dynamic IR light filling system
System includes supplementary lighting sources and light filling optical path component, and the light filling optical path component includes lens and DMD, in which: the supplementary lighting sources
It is arranged on the central axis of the Dynamic IR light-supplementing system, the supplementary lighting sources are located at institute in the central axial direction
It states between lens and the DMD, the central axis is parallel with the optical axis of the lens assembly of video camera；The DMD is arranged in institute
It states on the emitting light path of supplementary lighting sources, the outgoing of the supplementary lighting sources is adjusted in a manner of reflecting the emergent light of the supplementary lighting sources
The projecting direction of light, the DMD are saturating by the emergent light of the supplementary lighting sources when rotating relative to its installation site to first angle
The lens are crossed, by the outgoing light projection of the supplementary lighting sources when DMD is rotated relative to its installation site to second angle
To except the lens, the numerical value of the first angle and second angle opposite number each other；The supplementary lighting sources project described
Emergent light on lens is irradiated to wait image on object.
Further, the first angle corresponds to the "On" state of the DMD, and the second angle corresponds to the DMD's
"Off" state.
Further, the Dynamic IR light-supplementing system further include: for controlling the light of the emergent light of the supplementary lighting sources
According to the light source driving circuit of Strength Changes.
Further, the number at least two of the light filling optical path component, each light filling optical path component is around described
The circumferentially-spaced arrangement of central axis.
Further, it is parallel to by the reflection light that the mirror-reflection of the micro-reflector of the DMD enters the lens
The optical axis of the lens.
Further, the number of the light filling optical path component be two, respectively include: the first lens and with described first thoroughly
First DMD of mirror cooperation；Second lens and the 2nd DMD cooperated with second lens；First DMD's and the 2nd DMD
The angle of optical axis and the central axis is 15 °, corresponding described of the installation site of the first DMD and the 2nd DMD
Angle α=87 ° of the optical axis of mirror.
Further, the Dynamic IR light-supplementing system further include: light absorbing device, the modulation switch component is described
The emergent light of the supplementary lighting sources, which is projected the light absorbing device, under "Off" state can receive the position of light.
Further, the Dynamic IR light-supplementing system further include: for controlling the modulation switch component described
The DMD driving circuit switched between "On" state and "Off" state.
Further, the Dynamic IR light-supplementing system further include: controller, the controller pass through SPI interface and institute
Light source driving circuit is stated to connect with DMD driving circuit.
The utility model also provides a kind of video camera, and the video camera includes: lens assembly；With dynamic red as described above
Outer light-supplementing system.
Further, the video camera further include: shell, the shell have the hollow cavity for being divided into two layers, one layer of installation
The lens assembly, another layer of installation Dynamic IR light-supplementing system.
The utility model carries out real-time Dynamic IR light filling by DMD, the light filling intensity of update in each second, therefore can
Reach dynamic light filling and the uniform purpose of light filling, acquires clearer low-light (level) image.
Detailed description of the invention
Fig. 1 is the structural blast schematic diagram of one embodiment of Dynamic IR light-supplementing system provided by the utility model.
Fig. 2 is index path when DMD in the Dynamic IR light-supplementing system of Fig. 1 is in "On" state.
Fig. 3 is index path when DMD in the Dynamic IR light-supplementing system of Fig. 1 is in "Off" state.
Fig. 4 is the circuit diagram in the Dynamic IR light-supplementing system of Fig. 1.
Appended drawing reference:
| 1 | Supplementary lighting sources | 4 | Light source driving circuit |
| 5 | DMD driving circuit | 6 | Light absorbing device |
| 7 | Lens assembly | 8 | Controller |
| 21 | First lens | 22 | Second lens |
| 31 | First DMD | 32 | 2nd DMD |
Specific embodiment
In the accompanying drawings, same or similar element is indicated using same or similar label or there is same or like function
Element.The embodiments of the present invention are described in detail with reference to the accompanying drawing.
Term " center ", " longitudinal direction ", " transverse direction ", "front", "rear", "left", "right", " perpendicular in the description of the present invention,
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom" "inner", "outside" is orientation based on the figure or position
Relationship is merely for convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore should not be understood as to scope of protection of the utility model
Limitation.
As shown in Figure 1 and Figure 4, video camera provided by the present embodiment includes shell 9 and is placed in 9 hollow cavity of shell
Lens assembly 7 and Dynamic IR light-supplementing system.The hollow cavity of shell 9 is divided into two layers, and one layer is used to install lens assembly 7, separately
One layer for installing the Dynamic IR light-supplementing system.Wherein, the installation site of lens assembly 7 compared with prior art, not
It changes.The central axis O of the Dynamic IR light-supplementing system is parallel with the optical axis of lens assembly 7, and central axis O can also be with
It is interpreted as the centerline axis parallel with the shell 9 of long tubular.
In some embodiments, the Dynamic IR light-supplementing system includes supplementary lighting sources 1, light filling optical path component, in which:
Imaging sensor in video camera is wider to the sensitive band region of light, and usual range is 400-1200nm, this is quick
Sense band covers visible light region and near infrared light region, therefore supplementary lighting sources 1 exist in this way using infrared light supply
The awns that will not only shine out with dazzling brilliancy in the environment (such as night) of dark influences personnel nearby and visually observes things, but also can
Imaging sensor is set to get clearly image.In the present embodiment, it is biggish infrared to can specifically include power for supplementary lighting sources 1
LED light and the cooling fin to radiate for infrared LED lamp, the center of infrared LED lamp is located at the center of the Dynamic IR light-supplementing system
In axes O.The outgoing beam of supplementary lighting sources 1 is in conical dispersion shape.The characteristic of emergent light cone angle by supplementary lighting sources 1 itself,
Emergent light cone angle is about 90 °, and therefore, β shown in Fig. 2 and Fig. 3 is the half of emergent light cone angle, i.e. angle beta=45 °.
The light filling optical path component includes lens, and the lens can be using lens products on the market.Light filling light
The emergent light in source 1 is via the lens lighting to wait image on object.The number at least two of the light filling optical path component, respectively
The light filling optical path component surrounds the circumferentially-spaced arrangement of central axis O, lens in each light filling optical path component and
The DMD is located at the two sides of supplementary lighting sources 1 on the direction central axis O.Large area light filling after can playing so uniformly
Effect.
The Dynamic IR light-supplementing system further includes the DMD (Digital with the cooperation light filling of the lens
Micromirror device, Digital Micromirror Device).The DMD (may also be referred to as by hundreds of thousands micro-reflector as " DMD is micro-
Reflecting mirror ") composition.When light source is irradiated on DMD, incident light is by DMD micro-reflector " open " state and "Off" state difference
It is reflected with different angle, it, can be corresponding at being by the mirror surface of the DMD micro-reflector of this binary states by adjusting the angle of incident ray
Bright dark two kinds of pixels of system, so that the light being incident on DMD be made selectively to reflect and form black-white point pixel.DMD's is micro-
The mechanical flip-flop transition of lens array is very fast, about 15us, controls micro mirror unit by PWM duty cycle and is quickly overturn, by
So quickly monochrome pixels switching can not be captured in naked eyes, therefore, different PWM duty cycles can both show different ashes
Grade is spent, the colors such as light gray, dark-grey are visually being shown.
The DMD is arranged on the emitting light path of supplementary lighting sources 1, is adjusted in a manner of reflecting the emergent light of supplementary lighting sources 1
The projecting direction of the emergent light of supplementary lighting sources 1, by supplementary lighting sources when the DMD is rotated relative to its installation site to first angle
1 emergent light, which projects the lens, can receive the position of light, and the DMD is rotated relative to its installation site to second angle
When the emergent light of supplementary lighting sources 1 is projected except the lens.The numerical value of the first angle and second angle is opposite each other
Number.Under normal conditions, the first angle is the "On" state of the DMD, and the second angle is the "Off" shape of the DMD
State.
The mirror surface of the DMD micro-reflector is located in the optical path of the emergent light of supplementary lighting sources 1.The emergent light of supplementary lighting sources 1
Light beam be in conical dispersion shape, each DMD micro-reflector receives light beam, is modulated to light beam, modulated light
Beam is projected via the lens, and Infrared irradiation enables lens assembly 7 get the low-light (level) image of high quality into scene.
The light filling course of work of the present embodiment is exemplified below:
Step 1 acquires the frame image to light filling region by video camera, which is divided into 400,000 sub-regions.
Step 2 is strong come the light filling of each sub-regions determined in deciding step one according to the intensity of brightness of subregion
Degree.Stronger light filling is needed if the subregion is darker, vice versa.It should be noted that in the application and be not concerned with " according to
The intensity of brightness of subregion determines the light filling intensity of each sub-regions " specific method, existing method can be used
It obtains.
Step 3, by adjusting the state (including " open " state and "Off" state) of DMD micro-reflector described in each, point
The other light filling intensity to each sub-regions determined in step 1 is adjusted in real time.
The present embodiment carries out real-time Dynamic IR light filling by DMD, and the light filling intensity of update in each second can supervise in real time
The intensity variation of each sub-regions in picture is measured, and corresponding light filling intensity is chosen according to variation, is mended with reaching dynamic
Light and the uniform purpose of light filling, acquire clearer low-light (level) image.
In one embodiment, the Dynamic IR light-supplementing system further includes light source driving circuit 4, light source driving circuit 4
It can be realized using more common DCDC chip SY8703ABC.Light source driving circuit 4 is used to control the emergent light of supplementary lighting sources 1
Intensity of illumination variation.Video camera provided in this embodiment is in use, the emergent light of supplementary lighting sources 1 is arrived via the lens lighting
Wait image on object, when shooting object to be imaged, the light of object reflection to be imaged is entered in shell 9, thus by camera lens
Component 7 is collected.Wait image ambient light locating for object it is darker in the case of, supplementary lighting sources 1 open, supplementary lighting sources 1 issue
Light be irradiated to via shell 9 wait image on object, to enhance the intensity of illumination for the light environment for treating camera shooting object.Important
It is that the present embodiment can control supplementary lighting sources 1 using light source driving circuit 4 according to the practical intensity of illumination of light environment
The intensity of illumination of emergent light changes, to achieve the purpose that dynamic light filling.
In one embodiment, supplementary lighting sources 1 are arranged on the central axis O of the Dynamic IR light-supplementing system, center
Axes O is parallel with the optical axis of lens assembly 7 of video camera.The number at least two of the light filling optical path component, each benefit
Light optical path component surrounds the circumferentially-spaced arrangement of central axis O, it is preferable that each light filling optical path component surrounds central axis O weeks
It is arranged to uniform intervals.The lens and the DMD in each light filling optical path component are distinguished on the direction central axis O
Positioned at the two sides of supplementary lighting sources 1.On the one hand the same supplementary lighting sources 1 can be shared for each light filling optical path component in this way,
Save the cost and space；On the other hand, be conducive to improve the uniformity of light filling.
In one embodiment, the reflection light of the lens is entered by the mirror-reflection of the micro-reflector of the DMD
It is parallel to the optical axis of the lens, such mainly useful for controls accurate light filling.Certainly, it is also not excluded for by the micro- anti-of the DMD
Penetrate mirror mirror-reflection enter the lens reflection light be not parallel to the lens optical axis situation, this mode phase
It is more relatively low than in the former light filling accuracy.
If illustratively, the number of the light filling optical path component is two in Fig. 2 and Fig. 3, the first light filling optical path is respectively included
Component and the second light filling optical path component, in which: the first light filling optical path component include the first lens 21 and with the first lens 21
First DMD31 of cooperation, the first lens 21 and the first DMD31 are located at the two of supplementary lighting sources 1 on the direction central axis O
Side.The second light filling optical path component includes the second lens 22 and the 2nd DMD32 with the cooperation of the second lens 22, the second lens 22
The two sides of supplementary lighting sources 1 are located on the direction central axis O with the 2nd DMD32.
In the present embodiment, the first light filling optical path component and the second light filling optical path component share the same supplementary lighting sources 1, light filling
The light beam of the emergent light of light source 1 is in conical dispersion shape, and the DMD (including the first DMD31 and the 2nd DMD32) receives light beam
It being modulated afterwards to light beam, modulated light beam is projected via the lens (including the first lens 21 and second lens 22),
Infrared irradiation enables lens assembly 7 get the low-light (level) image of high quality into scene.The present embodiment utilizes two-way DMD
And lens, the area of infrared light filling is expanded, because may be implemented to carry out individual light filling strength control, institute to each subregion
The infrared lamp that relatively high power can be selected with supplementary lighting sources has fully ensured that the infrared light filling intensity at picture edge.Certainly, in addition to
Using two-way DMD and lens, can also use all the way, three tunnels or more, four tunnels.
As shown in Figures 2 and 3, in one embodiment, the rotation angle, θ of DMD micro-reflector=± 12 °, the DMD is micro-
Reflecting mirror is under the "On" state, i.e. θ=+ 12 ° of first angle (as shown in Figure 2), and the DMD micro-reflector is in the "Off"
Under state, i.e. θ=- 12 ° of second angle (as shown in Figure 3).When DMD micro-reflector is in+12 °, the emergent light of supplementary lighting sources 1
Lens are reflected into, when DMD micro-reflector is in -12 °, the emergent light of supplementary lighting sources 1 is projected except the lens.
" rotation angle " refers to that each described DMD micro-reflector changes its angle relative to initial position by rotation, in this way
It can switch between "On" state and "Off" state." initial position " can be understood as the installation site of DMD, i.e., the described DMD
The position that the rotation angle of micro-reflector is 0.
Illustrate the mounting means of DMD and lens, the peace of the 2nd DMD32 and the second lens 22 by taking the first DMD31 as an example below
Dress mode is identical, and details are not described herein.
Fig. 2 shows be index path when DMD is in "On" state, as shown in Fig. 2, the DMD micro-reflector reflects
The light m for entering the first lens 21 is preferably normal to the mirror surface of the first lens 21, i.e. reflection light m and the first lens 21
Optical axis n is parallel, and the situation for the incident ray m that the optical axis n of the first lens 21 is overlapped with the first lens 21 is illustrated in Fig. 2.At this time
Angle ε between the optical axis n and central axis O of first lens 21 determines the installation site of the first DMD31, the peace of the first DMD31
Holding position is indicated by the angle α in Fig. 2.In one embodiment, angle ε=15 °, angle α=87 °, as described at this time
DMD micro-reflector is in "On" state, and the mirror surface of the DMD micro-reflector rotates angle, θ=+ 12 °, the DMD micro-reflector
Mirror surface and the first lens 21 optical axis n-θ=75 ° angle γ=α, the angle δ of the emergent lights of supplementary lighting sources 1 and light m=
60 °, then the reflection angular of the first DMD31 is 30.
Identical as the optical principle in Fig. 2, Fig. 3 illustrates that index path when the first DMD31 is in "Off" state, such as schemes
Shown in 3, since the DMD micro-reflector at this time is in "On" state, the mirror surface rotation angle, θ of the DMD micro-reflector=-
12 ° ,+θ=99 ° angle γ=α of the optical axis n of the mirror surface of the DMD micro-reflector and the first lens 21, supplementary lighting sources 1 go out
Penetrate angle δ=36 ° of the reflected beams of the mirror surface of light and the DMD micro-reflector.
In one embodiment, the Dynamic IR light-supplementing system further includes light absorbing device 6, and light absorbing device is to be by reflection
Cavity made of the material at number pole bottom mainly guarantees that the light for entering the cavity will not be reflected to come as far as possible.DMD is described
The emergent light of supplementary lighting sources 1, which is projected light absorbing device 6, under "Off" state can receive the position of light.
In one embodiment, the Dynamic IR light-supplementing system further includes for controlling modulation switch component 3 described
The DMD driving circuit 5 switched between "On" state and "Off" state.Common DLP2000 series can be selected in DMD driving circuit 5
It realizes.
In one embodiment, the Dynamic IR light-supplementing system further includes controller 8, controller 8 by SPI interface with
Light source driving circuit 4 and DMD driving circuit 5 connect.Light source driving circuit 4 and DMD driving circuit 5 pass through SPI interface and control
Device 8 processed is communicated, and the instruction from controller 8 is received.
Finally it is noted that above embodiments are only to illustrate the technical solution of the utility model, rather than it is limited
System.Those skilled in the art should understand that: it is possible to modify the technical solutions described in the foregoing embodiments, or
Person's equivalent replacement of some of the technical features；These are modified or replaceed, and do not make the essence of corresponding technical solution de-
Spirit and scope from various embodiments of the utility model technical solution.
Claims (11)
1. a kind of Dynamic IR light-supplementing system, which is characterized in that including supplementary lighting sources (1) and light filling optical path component, the light filling
Optical path component includes lens and DMD, in which:
The supplementary lighting sources (1) are arranged on the central axis (O) of the Dynamic IR light-supplementing system, the supplementary lighting sources (1)
On the direction the central axis (O) between the lens and the DMD, the mirror of central axis (O) and video camera
The optical axis of head assembly (7) is parallel；
The DMD is arranged on the emitting light path of the supplementary lighting sources (1), to reflect the emergent light of supplementary lighting sources (1)
Mode adjusts the projecting direction of the emergent light of the supplementary lighting sources (1), and the DMD is rotated relative to its installation site to first jiao
The emergent light of the supplementary lighting sources (1) is penetrated into the lens when spending, the DMD is rotated relative to its installation site to second jiao
The emergent light of the supplementary lighting sources (1) is projected except the lens when spending, the numerical value of the first angle and second angle
Opposite number each other；
The emergent light that the supplementary lighting sources (1) project on the lens is irradiated to wait image on object.
2. Dynamic IR light-supplementing system as described in claim 1, which is characterized in that the first angle corresponds to the DMD's
"On" state, the second angle correspond to the "Off" state of the DMD.
3. Dynamic IR light-supplementing system as claimed in claim 2, which is characterized in that further include:
For controlling the light source driving circuit (4) of the intensity of illumination variation of the emergent light of the supplementary lighting sources (1).
4. Dynamic IR light-supplementing system as described in claim 1, which is characterized in that the number of the light filling optical path component is at least
It is two, each light filling optical path component surrounds the central axis (O) circumferentially-spaced arrangement.
5. Dynamic IR light-supplementing system as described in claim 1, which is characterized in that by the mirror surface of the micro-reflector of the DMD
The reflection light for being reflected into the lens is parallel to the optical axis of the lens.
6. the Dynamic IR light-supplementing system as described in any one of claims 1 to 5, which is characterized in that the light filling optical path group
The number of part is two, respectively include:
First lens (21) and the first DMD (31) cooperated with first lens (21)；
Second lens (22) and the 2nd DMD (32) cooperated with second lens (22)；
The angle of the optical axis of first DMD (31) and the 2nd DMD (32) and the central axis (O) are 15 °, described first
Angle α=87 ° of the optical axis of the corresponding lens of the installation site of DMD (31) and the 2nd DMD (32).
7. Dynamic IR light-supplementing system as claimed in claim 2, which is characterized in that further include:
The emergent light of the supplementary lighting sources (1) is projected the suction under the "Off" state by light absorbing device (6), the DMD
Electro-optical device (6) can receive the position of light.
8. Dynamic IR light-supplementing system as claimed in claim 3, which is characterized in that further include:
The DMD driving circuit (5) switched between the "On" state and "Off" state for controlling the DMD.
9. Dynamic IR light-supplementing system as claimed in claim 8, which is characterized in that further include:
Controller (8), the controller (8) are connected by SPI interface and the light source driving circuit (4) and DMD driving circuit (5)
It connects.
10. a kind of video camera characterized by comprising
Lens assembly (7)；With
Dynamic IR light-supplementing system as claimed in any one of claims 1-9 wherein.
11. video camera as claimed in claim 10, which is characterized in that further include:
Shell (9), the shell (9) have the hollow cavity for being divided into two layers, one layer of installation lens assembly (7), another layer of peace
Fill the Dynamic IR light-supplementing system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820643705.9U CN208190776U (en) | 2018-05-02 | 2018-05-02 | A kind of Dynamic IR light-supplementing system and the video camera with it |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820643705.9U CN208190776U (en) | 2018-05-02 | 2018-05-02 | A kind of Dynamic IR light-supplementing system and the video camera with it |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109903370A (en) * | 2019-01-17 | 2019-06-18 | 哈尔滨工业大学 | Single-shot lamination phase recuperation technique based on double DMD |
| CN110435665A (en) * | 2019-08-14 | 2019-11-12 | 东风汽车有限公司 | Driver detection device and car |
| CN110505377A (en) * | 2019-05-31 | 2019-11-26 | 杭州海康威视数字技术股份有限公司 | Image co-registration device and method |
| CN112558084A (en) * | 2019-09-25 | 2021-03-26 | 科沃斯机器人股份有限公司 | Optical flow sensor and mobile robot |
-
2018
- 2018-05-02 CN CN201820643705.9U patent/CN208190776U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109903370A (en) * | 2019-01-17 | 2019-06-18 | 哈尔滨工业大学 | Single-shot lamination phase recuperation technique based on double DMD |
| CN110505377A (en) * | 2019-05-31 | 2019-11-26 | 杭州海康威视数字技术股份有限公司 | Image co-registration device and method |
| CN110435665A (en) * | 2019-08-14 | 2019-11-12 | 东风汽车有限公司 | Driver detection device and car |
| CN112558084A (en) * | 2019-09-25 | 2021-03-26 | 科沃斯机器人股份有限公司 | Optical flow sensor and mobile robot |
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Granted publication date: 20181204 |