CN109272876A - A kind of splice displaying system - Google Patents
A kind of splice displaying system Download PDFInfo
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- CN109272876A CN109272876A CN201811391279.5A CN201811391279A CN109272876A CN 109272876 A CN109272876 A CN 109272876A CN 201811391279 A CN201811391279 A CN 201811391279A CN 109272876 A CN109272876 A CN 109272876A
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- Prior art keywords
- back projection
- projector
- fresnel lenses
- screen assembly
- displaying system
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/302—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements characterised by the form or geometrical disposition of the individual elements
- G09F9/3026—Video wall, i.e. stackable semiconductor matrix display modules
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/142—Adjusting of projection optics
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
Abstract
This application discloses a kind of splice displaying systems, comprising: multiple back projection units mutually spliced, there are splicing seams between two neighboring back projection unit；Each back projection unit includes projector and screen assembly, and screen assembly includes Fresnel Lenses and back projection curtain, is mutually spliced between two neighboring Fresnel Lenses；The light range that projector goes out shows the range of image beyond back projection curtain, and the light beyond part projects the side of screen assembly；The side that each Fresnel Lenses mutually splices is equipped with corner cut；Further include: self-adapting adjusting apparatus, for detecting the variation of ambient temperature, according to the size of pre-set programs adjust automatically projection picture of projector.The light range that projector goes out in the application expands compared with the existing technology, some light can be entered in splicing seams by screen assembly side, it is projected again from back projection curtain front, completely eliminates splicing black lines, and the optimum efficiency of elimination black line can be maintained when temperature changes.
Description
Technical field
The present invention relates to field of display technology, more particularly to a kind of splice displaying system.
Background technique
Rear projection splicing wall is a kind of profession display application, it uses modularization display cell structure, can be simply and easily
Together by multiple images unit spliced, realize that the image of extra large screen ultrahigh resolution is shown.Although currently, existing modular
The image piece of combination has accomplished very little, less than a pixel of image, almost without the loss of image, but adjacent cells
Between also or there is apparent splicing seams, show that picture visually has apparent black line to divide, affect the entirety of image
Property, it is unable to reach the panorama integration display effect of seamless spliced technology.
As shown in Figure 1, common splice displaying system is by multiple back projection units 11, closely splicing is formed, two neighboring
There are a splicing seams 12 between back projection unit, which can be actual physical clearance, it is also possible to be connected by screen
Material is spaced.As shown in Fig. 2, each back projection unit 11 sets gradually structure according to optical path by projector 21 and screen assembly 22
At, in order to reduce system thickness, reflective mirror is also equipped between projector 21 and screen assembly 22 in most cases, here from
Slightly.Screen assembly 22 is made of fixed bracket 23, Fresnel Lenses 24, back projection curtain 25.In each back projection unit 11, throw
The projection ray 26 that shadow machine 21 issues passes through Fresnel Lenses 24 and is reflected by Fresnel Lenses 24, and then collimation invests back projection
Curtain 25 is finally projected by reasonable angular distribution from the front of back projection curtain 25 under the action of back projection curtain 25.Projection ray
26 range by chance covers full entire back projection curtain 25.Since installation is fixed and the needs of 22 position of screen assembly adjustment, two
Always there is certain splicing gap 12 between a screen assembly.Due to there is no light to reach this splicing gap 12, so as to cause
A black line is formed at splicing seams 12, so as to cause there is the phenomenon that image segmentation；Also, back projection curtain 25 and Fresnel Lenses
24 be all macromolecule organic material, and the variation of regularity is presented in scantling when influenced by ambient temperature, that is to say, that in temperature
When changing, splicing seams 12 can also change therewith, cause image display effect bad.
Therefore, how to eliminate the black line formed at splicing gap and can maintain to eliminate black line most when temperature changes
Good effect is those skilled in the art's technical problem urgently to be resolved.
Summary of the invention
In view of this, two neighboring back can be completely eliminated the purpose of the present invention is to provide a kind of splice displaying system
Splicing black lines present in projecting cell stitching portion, and can maintain when temperature changes to eliminate the optimum efficiency of black line.Its
Concrete scheme is as follows:
A kind of splice displaying system, comprising: multiple back projection units mutually spliced, the two neighboring back projection unit
Between there are splicing seams；Each back projection unit includes projector and screen assembly, and the screen assembly includes fixed bracket,
The Fresnel Lenses and back projection curtain being fixedly connected sequentially mutually splice between the two neighboring Fresnel Lenses；
The light range that the projector goes out shows the range of image, the light beyond part beyond the back projection curtain
Line projects the side of the screen assembly；
The side that each Fresnel Lenses mutually splices is equipped with corner cut；
Further include: self-adapting adjusting apparatus, for detecting the variation of ambient temperature, according to pre-set programs adjust automatically
The size of projection picture of projector in the back projection unit.
Preferably, in above-mentioned splice displaying system provided in an embodiment of the present invention, the self-adapting adjusting apparatus includes
Temperature sensor, microprocessor and projector's picture adjust component；
The temperature sensor, for detecting the variation of ambient temperature in set temperature detection time interval；
The microprocessor, in setting screen adjustment time interval, judging the temperature of the temperature sensor transmission
Whether degree variation average value is more than threshold value, if so, sending control signal to projector's picture adjustment component；
Projector's picture adjusts component, for after receiving the control signal, starting to adjust the throwing immediately
The size of shadow machine projected picture.
Preferably, in above-mentioned splice displaying system provided in an embodiment of the present invention, the temperature sensing implement body setting
The both ends of the back projection unit described in every row.
Preferably, in above-mentioned splice displaying system provided in an embodiment of the present invention, two of back projection unit described in every row
End is each provided with the temperature sensor, as temperature sensor described in one group；
The microprocessor, be specifically used in setting screen adjustment time interval, judge every group described in temperature sensor
Whether the temperature change average value of transmission is more than threshold value, if so, control signal is sent to projector's picture adjustment component,
To adjust projection picture of projector described in corresponding every row.
Preferably, in above-mentioned splice displaying system provided in an embodiment of the present invention, the corner cut is specifically located at described
The surrounding of Fresnel Lenses is close to the projector side；
The cut surface of the corner cut is plane or curved surface.
Preferably, in above-mentioned splice displaying system provided in an embodiment of the present invention, the depth of the corner cut is less than described
Screen assembly front shows the corresponding light in image border in the Fresnel Lenses internal refraction and propagation path position.
Preferably, in above-mentioned splice displaying system provided in an embodiment of the present invention, the screen assembly further includes setting
On the inside of the Fresnel Lenses and the light-transmitting plate that is mounted between the Fresnel Lenses and the fixed bracket.
Preferably, in above-mentioned splice displaying system provided in an embodiment of the present invention, the screen assembly further includes fixing
The glass outer plate being connected on the back projection curtain.
Preferably, in above-mentioned splice displaying system provided in an embodiment of the present invention, the light of the projector out
The numerical value of range of the range beyond back projection curtain display image is within 0.5 pixel.
Preferably, in above-mentioned splice displaying system provided in an embodiment of the present invention, further includes: be arranged in the splicing seams
Interior diffusion sheet or scattering layer.
It can be seen from the above technical proposal that a kind of splice displaying system provided by the present invention, comprising: multiple mutual spellings
The back projection unit connect, there are splicing seams between two neighboring back projection unit；Each back projection unit includes projector and screen
Component, screen assembly include fixed bracket, and the Fresnel Lenses being fixedly connected sequentially and back projection curtain, two neighboring Fresnel are saturating
Mutually splice between mirror；The light range that projector goes out shows the range of image, the light beyond part beyond back projection curtain
Line projects the side of screen assembly；The side that each Fresnel Lenses mutually splices is equipped with corner cut；Further include: adaptive adjustment dress
It sets, for detecting the variation of ambient temperature, according to projection picture of projector in pre-set programs adjust automatically back projection unit
Size.
The light range that projector goes out in the present invention expands compared with the existing technology, shows image beyond back projection curtain
The part light of range project on the side of screen assembly, while being provided with corner cut in Fresnel Lenses side, in this way
Light projects on the cut surface of corner cut, and splicing seams are entered after refraction or scattering, can be to avoid projecting screen assembly side
Light blocked or be totally reflected in its side into Fresnel Lenses by Fresnel Lenses, to be smoothly through group of screens
The side of part enters in splicing seams, these light illuminate splicing seams after entering in splicing seams, then inject to back via splicing seams
The front of projection screen allows projected image continuously across splicing seams, to completely eliminate two neighboring back projection unit splicing place
Existing splicing black lines reach the beneficial effect for effectively eliminating image mosaic seam, also, the picture size that back projection unit is shown
Can carry out adaptation adjustment according to environment temperature, with offset because caused by screen assembly change in size caused by environment temperature to above-mentioned
The influence for eliminating black line effect can also be true even if screen assembly influences splicing seams size because environment temperature leads to change in size
It protects suitable light and projects screen assembly side, to maintain to eliminate the optimum efficiency of black line.
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 existing splice displaying system；
Fig. 2 is the structural schematic diagram of existing back projection unit；
Fig. 3 is one of the structural schematic diagram of splice displaying system provided in an embodiment of the present invention；
Fig. 4 is structural representation of the splice displaying system provided in an embodiment of the present invention through self-adapting adjusting apparatus adjustment front and back
Figure；
Fig. 5 is distribution schematic diagram of the temperature sensor provided in an embodiment of the present invention in splice displaying system；
Fig. 6 is the work flow diagram of self-adapting adjusting apparatus provided in an embodiment of the present invention；
Fig. 7 is the second structural representation of splice displaying system 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.
The present invention provides a kind of splice displaying system, as shown in Figure 3, comprising: multiple back projection units 11 mutually spliced,
There are splicing seams 12 between two neighboring back projection unit 11；Each back projection unit 11 includes projector 21 and screen assembly 22,
Screen assembly 22 includes fixed bracket 23, the Fresnel Lenses 41 and back projection curtain 25 being fixedly connected sequentially, two neighboring phenanthrene alunite
Mutually splice between your lens 41；
26 range of light that projector 21 projects shows the range of image, the light beyond part beyond back projection curtain 25
Project the side of screen assembly 22；
The side that each Fresnel Lenses 41 mutually splices is equipped with corner cut；
Further include: self-adapting adjusting apparatus, for detecting the variation of ambient temperature, according to pre-set programs adjust automatically
The size of projection picture of projector in back projection unit.
In above-mentioned splice displaying system provided in an embodiment of the present invention, 26 range of light that projector 21 projects is opposite
Expand in the prior art, shows that the part light of the range of image projects the side of screen assembly 22 beyond back projection curtain 25
On, while it being provided with corner cut in 41 side of Fresnel Lenses, such light projects on the cut surface of corner cut, is reflected or scattered
Enter splicing seams 12 afterwards, can block or enter luxuriant and rich with fragrance alunite by Fresnel Lenses 41 to avoid the light for projecting 22 side of screen assembly
You are totally reflected lens 41 in its side, so that the side for being smoothly through screen assembly 22 enters in splicing seams 12, this
A little light illuminate splicing seams after entering in splicing seams 12, then project from the front of back projection curtain 25, keep projected image continuous
Across splicing seams 12, splicing black lines present in two neighboring 11 stitching portion of back projection unit are completely eliminated, that is to say, that carrying on the back
Increase this special light guide structure of corner cut inside projecting cell, display unit rim ray is guided to splicing seams, makes originally
The splicing seams of black shine, to completely eliminate splicing black lines, achieve the effect that effectively eliminate splicing seams, realize that image is complete
Property, in addition the self-adapting adjusting apparatus in splice displaying system can detecte the variation of ambient temperature, according to pre-set programs
The picture size that the size of projection picture of projector in adjust automatically back projection unit, i.e. back projection unit are shown can be according to environment
Temperature carries out adaptation adjustment, to offset because imitating caused by screen assembly change in size caused by environment temperature to above-mentioned elimination black line
The influence of fruit also ensures that suitable light even if screen assembly influences splicing seams size because environment temperature leads to change in size
Line projects screen assembly side, to maintain to eliminate the optimum efficiency of black line.
In practical applications, since back projection curtain and Fresnel Lenses are all macromolecule organic materials, by environment temperature shadow
The variation of regularity is presented in scantling when ringing, as shown in figure 4, when the temperature decreases, back projection curtain 25 and Fresnel Lenses 41
Size can become smaller, and splicing seams 12 is caused to become larger, and enter more edge projection light 26 in splicing seams 12, the light 51 of outgoing
It is obvious to become more, lead to bright line；At this moment self-adapting adjusting apparatus detects temperature change size, throws unit automatically according to pre-set programs
Shadow picture is turned down, and the edge projection light 26 for entering splicing seams 12 is reduced, and the light of outgoing tails off therewith, avoids the formation of bright
Line.Conversely, cell projection picture is tuned up, increase the light for entering splicing seams to avoid formation black line.
Further, in the specific implementation, adaptive to adjust in above-mentioned splice displaying system provided in an embodiment of the present invention
Engagement positions may include temperature sensor, microprocessor and projector's picture adjustment component.Temperature sensor, in setting temperature
It spends in detection time interval, detects the variation of ambient temperature；As shown in figure 5, temperature sensor 61 specifically can be set
The both ends of every row back projection unit 11；Preferably, a temperature sensor can be arranged in the both ends of every row back projection unit 11
61, as one group of temperature sensor, set temperature detection time interval can be set to detect 1 to 2 time per minute.Micro process
Device, in setting screen adjustment time interval, judging whether the temperature change average value of temperature sensor transmission is more than threshold
Value, if so, sending control signal to projector's picture adjustment component；Specifically, setting screen adjustment time interval can be set
Be set to 1 time per hour, microprocessor calculate during this period every group of temperature sensor transmission temperature change average value, if it exists its
In one group of temperature sensor transmission temperature change average value be more than threshold value, such as 5 DEG C, by issue control signal.Projector's picture
Component is adjusted, for upon the reception of control signals, starting to adjust the size of projection picture of projector immediately；Specifically, it projects
Machine picture adjustment component receive one group of temperature sensor temperature change average value be more than threshold value control signal after, then to
That corresponding row projection picture of projector of this group of temperature sensor is adjusted, and the size of required adjustment is Δ L=Δ T
×E×L；Wherein, Δ T is temperature change average value, and E is the thermal expansion coefficient of screen material, and L is corresponding unit screen ruler
It is very little.
It should be noted that projector's picture adjustment component can be the adjustment of the electronics picture built in projector, it can also be with
It is the external electronic position adjustment device of projector, this will not be repeated here.
As shown in fig. 6, the specific set-up procedure of self-adapting adjusting apparatus may include: splice displaying system booting after,
Temperature sensor detects the variation of ambient temperature, temperature change value is sent in set temperature detection time interval
Microprocessor；Microprocessor is in setting screen adjustment time interval, multiple temperature of temperature sensor transmission during calculating this
The temperature change average value for spending changing value, judges whether temperature change average value is more than threshold value, if so, to projector's picture tune
Integeral part sends control signal, if it is not, then temperature sensor continues timing detection；Projector's picture adjusts component and is receiving control
After signal processed, start immediately and the size of projection picture of projector is adjusted, temperature sensor continues timing after adjustment
Detection.
Further, in the specific implementation, in above-mentioned splice displaying system provided in an embodiment of the present invention, such as Fig. 3 institute
Show, corner cut can be specifically set the surrounding in Fresnel Lenses 41 close to 21 side of projector；The cut surface of corner cut can be flat
Face is also possible to arbitrary curved surface.The cut surface needs as far as possible to deeply, but cannot influencing luxuriant and rich with fragrance alunite among Fresnel Lenses 41
For the corresponding projection ray in 22 front display image border of projection screen component in your lens 41, i.e. the depth of corner cut can be small
In the corresponding light in the front of screen assembly 22 display image border in 41 internal refraction of Fresnel Lenses and propagation path position, with
22 front of screen assembly is not influenced shows that the corresponding light in image border does not reflect in Fresnel Lenses 41 and propagation is advisable, from
And making corner cut not influences to project screen after 22 front display image corresponding edge light of screen assembly is reflected from Fresnel Lenses 41
22 front of curtain component.
Further, in the specific implementation, in above-mentioned splice displaying system provided in an embodiment of the present invention, such as Fig. 3 institute
Show, screen assembly 22 can also include setting the inside of Fresnel Lenses 41 and be mounted on Fresnel Lenses 41 and fixed bracket it
Between light-transmitting plate 42；Furthermore it is also possible to include the glass outer plate 40 being fixedly connected on back projection curtain 25.Fresnel Lenses 41
It is corresponded with projector 21, the projection scope of each projector 21 is directed at the Fresnel Lenses 41 corresponding to it, glass outer
Plate 40, back projection curtain 25, light-transmitting plate 42 can also be corresponded with projector 21 respectively, individually be made by a back projection unit 11
With.Specifically, the part light beyond the display image range of back projection curtain 25 projects on the cut surface of corner cut and light-transmitting plate
On 42 edge, the light projected on 41 cut surface of Fresnel Lenses enters splicing seams after cut surface reflects or scatters, and throws
The light being mapped on the edge of light-transmitting plate 42 injects to splicing seams from 41 cut surface outer rim of Fresnel Lenses, these light enter spelling
Splicing seams are illuminated after seam, then inject to screen assembly front via splicing seams；Thus make in Fig. 1 originally without light arrival
Splicing seams 12 are illuminated, to eliminate the black line at splicing seams 12, and then reach the beneficial effect for effectively eliminating image mosaic seam
Fruit.
In the specific implementation, in above-mentioned splice displaying system provided in an embodiment of the present invention, what projector 21 projected
26 range of light shows the numerical value of image range beyond back projection curtain 25, can exceed within a pixel, it is preferable that exceed
It is best within 0.5 pixel.It can guarantee that the pixel of image is not lost while eliminating splicing seams black line in this way.
In order to achieve the effect that more preferably to eliminate splicing seams black line, in the specific implementation, provided in an embodiment of the present invention
It can also include: the diffusion sheet or scattering layer being arranged in splicing seams in above-mentioned splice displaying system, which is by scattering
Made of material or rough surface, the scattering layer are in splicing seams filling made of scattering material, and diffusion sheet or scattering layer can
Preferably the light for entering splicing seams to be guided to the front of screen assembly.By taking Fig. 7 as an example, diffusion sheet 43, which can be set, is being spelled
In seam 12, be also possible to screen assembly 22 is fixedly connected with part itself, at this point, the projection ray into splicing seams 12 can be suitable
Diffusion sheet 43 propagate, then projected from 22 positive direction of screen assembly, the image for participating in entire splice displaying system show, elimination
The splicing seams of image.
To sum up, a kind of splice displaying system provided in an embodiment of the present invention, comprising: multiple back projection lists mutually spliced
Member, there are splicing seams between two neighboring back projection unit；Each back projection unit includes projector and screen assembly, screen assembly
Including fixing bracket, the Fresnel Lenses being fixedly connected sequentially and back projection curtain, mutually spelled between two neighboring Fresnel Lenses
It connects；The light range that projector goes out shows the range of image beyond back projection curtain, and the light beyond part projects screen
The side of component；The side that each Fresnel Lenses mutually splices is equipped with corner cut；Further include: self-adapting adjusting apparatus, for detecting
The variation of ambient temperature, according to the size of projection picture of projector in pre-set programs adjust automatically back projection unit.This hair
The light range that bright middle projector goes out expands compared with the existing technology, that portion of the range of image is shown beyond back projection curtain
Light splitter projects on the side of screen assembly, while being provided with corner cut in Fresnel Lenses side, and such light, which projects, to be cut
On the cut surface at angle, splicing seams are entered after refraction or scattering, it can be to avoid projecting the light of screen assembly side by luxuriant and rich with fragrance alunite
Your lens are blocked or are totally reflected into Fresnel Lenses in its side, so that the side for being smoothly through screen assembly enters
Into splicing seams, these light illuminate splicing seams after entering in splicing seams, then the front of back projection curtain is injected to via splicing seams,
Allow projected image that across splicing seams, it is black continuously to completely eliminate splicing present in two neighboring back projection unit stitching portion
Line reaches the beneficial effect for effectively eliminating image mosaic seam, also, the picture size that back projection unit is shown can be according to environment temperature
Degree carries out adaptation adjustment, with offset because caused by screen assembly change in size caused by environment temperature to above-mentioned elimination black line effect
Influence also ensure that suitable light even if screen assembly influences splicing seams size because environment temperature leads to change in size
Screen assembly side is projected, to maintain to eliminate the optimum efficiency of black line.
Finally, it is to be noted that, herein, relational terms be used merely to by an entity or operation with it is another
A entity or operation distinguish, and without necessarily requiring or implying between these entities or operation, there are any this actual
Relationship or sequence.Moreover, the terms "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion,
So that the process, method, article or equipment for including a series of elements not only includes those elements, but also including not having
The other element being expressly recited, or further include for elements inherent to such a process, method, article, or device.Do not having
There is the element limited in the case where more limiting by sentence "including a ...", it is not excluded that in the mistake including the element
There is also other identical elements in journey, method, article or equipment.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Splice displaying system provided by the present invention is described in detail above, specific case pair used herein
The principle of the present invention and embodiment are expounded, method of the invention that the above embodiments are only used to help understand
And its core concept；At the same time, for those skilled in the art, according to the thought of the present invention, in specific embodiment and
There will be changes in application range, in conclusion the contents of this specification are not to be construed as limiting the invention.
Claims (10)
1. a kind of splice displaying system, comprising: multiple back projection units mutually spliced, the two neighboring back projection unit it
Between there are splicing seams；Each back projection unit includes projector and screen assembly, and the screen assembly includes fixed bracket, according to
The secondary Fresnel Lenses being fixedly connected and back projection curtain mutually splice between the two neighboring Fresnel Lenses；Its feature exists
In,
The light range that the projector goes out shows the range of image beyond the back projection curtain, and the light beyond part is thrown
It is mapped to the side of the screen assembly；
The side that each Fresnel Lenses mutually splices is equipped with corner cut；
Further include: self-adapting adjusting apparatus, for detecting the variation of ambient temperature, according to pre-set programs adjust automatically
The size of projection picture of projector in back projection unit.
2. splice displaying system according to claim 1, which is characterized in that the self-adapting adjusting apparatus includes that temperature passes
Sensor, microprocessor and projector's picture adjust component；
The temperature sensor, for detecting the variation of ambient temperature in set temperature detection time interval；
The microprocessor, in setting screen adjustment time interval, judging that the temperature of the temperature sensor transmission becomes
Change whether average value is more than threshold value, if so, sending control signal to projector's picture adjustment component；
Projector's picture adjusts component, for after receiving the control signal, starting to adjust the projector immediately
The size of projected picture.
3. splice displaying system according to claim 2, which is characterized in that the temperature sensor is specifically located at every row
The both ends of the back projection unit.
4. splice displaying system according to claim 3, which is characterized in that the both ends of back projection unit described in every row are set
It is equipped with the temperature sensor, as temperature sensor described in one group；
The microprocessor, be specifically used in setting screen adjustment time interval, judge every group described in temperature sensor transmission
Temperature change average value whether be more than threshold value, if so, to projector's picture adjustment component send control signal, with adjust
Projection picture of projector described in whole corresponding every row.
5. splice displaying system according to any one of claims 1 to 4, which is characterized in that the corner cut is specifically located at
The surrounding of the Fresnel Lenses is close to the projector side；
The cut surface of the corner cut is plane or curved surface.
6. splice displaying system according to claim 5, which is characterized in that the depth of the corner cut is less than the group of screens
Part front shows the corresponding light in image border in the Fresnel Lenses internal refraction and propagation path position.
7. splice displaying system according to claim 6, which is characterized in that the screen assembly further includes being arranged described
Light-transmitting plate Fresnel Lenses inside and be mounted between the Fresnel Lenses and the fixed bracket.
8. splice displaying system according to claim 7, which is characterized in that the screen assembly further includes being fixedly connected on
Glass outer plate on the back projection curtain.
9. splice displaying system according to claim 8, which is characterized in that the light range that the projector goes out is super
The back projection curtain shows the numerical value of the range of image within 0.5 pixel out.
10. splice displaying system according to claim 9, which is characterized in that further include: it is arranged in the splicing seams
Diffusion sheet or scattering layer.
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| CN201811391279.5A CN109272876B (en) | 2018-11-21 | 2018-11-21 | Splicing display system |
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|---|---|---|---|
| CN201811391279.5A CN109272876B (en) | 2018-11-21 | 2018-11-21 | Splicing display system |
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| CN109272876B CN109272876B (en) | 2020-12-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109581801A (en) * | 2019-02-19 | 2019-04-05 | 威创集团股份有限公司 | A kind of Fresnel Lenses, back projection splicing screen and joined screen display unit |
| CN110855966A (en) * | 2019-11-01 | 2020-02-28 | 深圳市康帕斯科技发展有限公司 | Automatic correction method for projection fusion and projection fusion system |
| CN112038371A (en) * | 2020-08-20 | 2020-12-04 | 武汉华星光电半导体显示技术有限公司 | Flexible display panel and display device |
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