CN106527024B - A kind of Fusion Edges seamless tiled display system and Fresnel Lenses and the method that long focus projector is simulated by short focus projector - Google Patents
A kind of Fusion Edges seamless tiled display system and Fresnel Lenses and the method that long focus projector is simulated by short focus projector Download PDFInfo
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- CN106527024B CN106527024B CN201611169531.9A CN201611169531A CN106527024B CN 106527024 B CN106527024 B CN 106527024B CN 201611169531 A CN201611169531 A CN 201611169531A CN 106527024 B CN106527024 B CN 106527024B
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- projector
- curtain
- fresnel lenses
- lens
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Classifications
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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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/02—Simple or compound lenses with non-spherical faces
- G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens
-
- 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
- G03B37/00—Panoramic or wide-screen photography; Photographing extended surfaces, e.g. for surveying; Photographing internal surfaces, e.g. of pipe
- G03B37/04—Panoramic or wide-screen photography; Photographing extended surfaces, e.g. for surveying; Photographing internal surfaces, e.g. of pipe with cameras or projectors providing touching or overlapping fields of view
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/3147—Multi-projection systems
Abstract
The present invention relates to back projection splicings to show wall field, discloses a kind of Fusion Edges seamless tiled display system, comprising: for projecting the curtain of image；At least two are disposed in parallel in the projector of act back side, for image to be projected to curtain；Fresnel Lenses between projector and curtain is set, and projector's image is projected on curtain through Fresnel Lenses, Chong Die with the generation fusion of the picture of neighboring projectors at picture edge；The distance between the projector and curtainThe distance between the Fresnel Lenses and curtain areIt short-focus lens projector can be used to carry out Fusion Edges splicing, reduce projector distance and system thickness, the high curtain of relatively small half gain visual angle, high gain, contrast can be selected, widen the optional face of curtain, lifting system entirety display effect.
Description
Technical field
The present invention relates to back projection splicings to show wall field, is in particular a kind of Fusion Edges seamless tiled display system
System and Fresnel Lenses and the method that long focus projector is simulated by short focus projector.
Background technique
Back projection splicing shows that wall is that multi-screen image is stitched together, and realizes that the image of extra large screen ultrahigh resolution is aobvious
Show application.Back projection splicing display technology can be divided into seamed splicing and seamless spliced two kinds of technique at present, wherein seamless spliced work
Skill is most widely used with edge fusion technology, completely eliminates optics piece and physics piece, makes system interface completely nothing point
It cuts, this shows that application is particularly important in some maps and lines.
Edge fusion technology is that more projector's combinations are incident upon on one piece of large screen, and the picture of neighboring projectors carries out
The brightness of picture lap and color can be carried out smooth transition processing, make overlap zone very by imbricate, edge fusion technology
The picture with other positions is fused together well, reappear one it is secondary without segmentation, it is super large, ultrahigh resolution, completely consistent whole
Width picture (as described in patent CN200510034437), wherein image processor picture is split, the technology of fusion treatment
(as described in CN201010604552) is also very mature.
Current Fusion Edges scheme, projector are directly incident upon on curtain, since the light that projector goes out is that have one
Firing angle is made, causes the screen on screen fusion band and its both sides different from the received incident light direction of projector, when with certain
When visual angle is watched, fusion band both sides luminance difference will lead to, tiled display transition is uneven.In order to avoid this problem, current
Settling mode is the projector using big projection than camera lens, such as the telephoto lens of 1.2:1 or more, to reduce projector's outgoing
The angle of emergence of light, and need to select the scattering curtain at big visual angle, to reduce neighboring screens because incident ray incidence angular displacement is made
At luminance difference.But there is following two in this:
1, using telephoto lens, projector distance needs to increase, cause display system integral thickness increase, some spaces compared with
Small place can not install and use；
2, the bigger screen in visual angle, gain is lower, causes brightness before the screen of system lower, and needs appropriate reduction curtain
Contrast can just meet brightness demand to promote gain, and synthesis display is ineffective.Typical Fusion Edges curtain optical property ginseng
Number is gain 0.4~0.6, half gain visual angle ± 50 °~± 70 °.
Summary of the invention
This patent aims to solve the problem that at least one technological deficiency in the prior art, and projector distance can be reduced and be by providing one kind
The Fusion Edges seamless tiled display system of system thickness.
This patent is achieved through the following technical solutions above-mentioned purpose.
This patent discloses a kind of Fusion Edges seamless tiled display systems, comprising:
For projecting the curtain of image；
At least two are disposed in parallel in the projector of act back side, for image to be projected to curtain；
Fresnel Lenses between projector and curtain is set, projector's image is projected on curtain through Fresnel Lenses,
It is Chong Die with the generation fusion of the picture of neighboring projectors at picture edge；
The distance between the projector and curtainThe Fresnel
The distance between lens and curtain areWherein
W is practical projection width of the separate unit projector on curtain, and Tr is that projector lens project ratio, and Tr' wants for projector
The projection ratio of simulation, D are the width for merging overlap zone, θ2For half angle of emergence of projector light to be simulated, S is fixed saturating
The edge offset amount that mirror is reserved.
Fresnel Lenses is widely used in the seamed splicing process of back projection, for that will carry out from the incident ray of projector
Parallelization, then pass through screen imaging, the curtain and lens in the technique are typically no or are only no more than the gap of 1mm.This patent benefit
The principle for changing angle of incident light with lens, using short-focus lens, the luxuriant and rich with fragrance alunite of specific position setting one between projector and curtain
Your lens, by the poly- certain angle of the projector light congruence, but light is still divergent, to simulate telephoto lens, can reduce projection away from
From and system thickness, and reduce the incident ray incidence angle of curtain, so as to select relatively small half gain visual angle, high gain,
The high curtain of contrast, lifting system display effect.
Detailed description of the invention
Fig. 1 is that the Fusion Edges of this patent embodiment splice schematic illustration.
Fig. 2 is the schematic diagram calculation for determining curtain-Fresnel Lenses-projector's three's distance.
Fig. 3 is the structural schematic diagram of Fresnel Lenses.
Fig. 4 is the schematic diagram calculation for calculating Fresnel Lenses Facet angle beta.
Fig. 5 is the index path for calculating Fresnel Lenses Facet angle beta.
Specific embodiment
In order to further illustrate the working principle and technical effect of this patent, done below in conjunction with attached drawing citing further detailed
It describes in detail bright.
As described above, in conjunction with Fig. 1, the present embodiment changes the principle of angle of incident light using lens, using short-focus lens,
A specific Fresnel Lenses is arranged in specific position between projector and curtain, by the poly- certain angle of the projector light congruence, but light
Line is still divergent, and to simulate telephoto lens, can reduce projector distance and system thickness, and subtracts the incident ray incidence angle of curtain
It is small, so as to the curtain for selecting relatively small half gain visual angle, high gain, contrast high, lifting system display effect.
The first step determines Fresnel Lenses (hereinafter referred to as lens) size and installation site in systems.
Projector lens projection used can be defined according to demand than Tr and need to simulate projection than Tr', and separate unit projector
Projection size W (containing fusion band) and fusion band width D.
As shown in Figure 2, it is known that following relationship:
It can obtain:
Wherein:
θ1It is half angle of emergence of projector light and the incidence angle of the corresponding incident light of lens；
θ2It is half angle of emergence of simulated projections machine projection light and the angle of emergence of the corresponding incident light of lens.
S is the edge offset amount that fixed lens are reserved, and in specific installation process, which can be according to actual installation
Situation is finely adjusted, and within 10cm, optimum distance is controlled within 5cm general control；
WFIt is lens effective width；
L ' is the distance of lens distance projector emergent pupil；
L is the final projector distance of system.
It can be obtained by illustrating, the distance of curtain and lens isIn specific installation process,
Lens can be finely adjusted according to actual installation situation, and for S general control as described above within 10cm, preferred plan is control
Within 5cm, the distance of curtain and lens, which can control, at this time is being no more thanSection in.Work as S=
When 0, curtain and the smallest distance of lens are L-L '=D/ (2*tan θ2)。
In the present embodiment wherein after Fresnel Lenses size dimension, position has been determined, the prism portion of Fresnel Lenses
The angle Facet of exit facet must especially be calculated by relevant information.
Therefore, second step is to carry out lens design, calculates the Facet angle beta of prism position exit facet.
Fig. 3 is lens synoptic chart, and p is lens flight pitch, according to lens sizes and flight pitch, can calculate lens
Total number of threads.
Further combined with Fig. 4, the corresponding incidence angle θ of a certain circle screw thread m '1With output angle θ '2Solution formula is respectively as follows:
Wherein, a represents the half of a certain circle corresponding lens width of screw thread m, and b represents a certain circle screw thread m and projects accordingly
The half of size.
According to Fig. 5, the formula that can must solve the angle β is as follows:
Wherein, n is lens material refractive index, and spatial peripheral air refraction locating for lens is defaulted as 1, by these three public affairs
Formula can calculate the angle Facet of each screw thread prism exit facet of lens, related lens molds design be carried out, by usual Fresnel Lenses
Manufacturing process is manufactured.
Third step is according to default and computed information, the relative position of setting and fixed projector, lens and curtain, so
Edge blending system is debugged by afterwards.
Select yield value high 30% left so that 0.85:1 simulation 1.2:1 camera lens projection is than display effect as an example using this scheme
(i.e. same brightness projector, 30%) system brightness can be promoted can reach similar syncretizing effect to right curtain, and system thickness can
It is reduced by about 17%.
From above-described embodiment as can be seen that short-focus lens projector can be used to carry out Fusion Edges for the technical solution of this patent
Splicing reduces projector distance and system thickness, and the high curtain of relatively small half gain visual angle, high gain, contrast can be selected, widen curtain
Optional face, lifting system entirety display effect.
Claims (9)
1. a kind of Fusion Edges seamless tiled display system, comprising:
For projecting the curtain of image；
At least two are disposed in parallel in the projector of act back side, for image to be projected to curtain；
Fresnel Lenses between projector and curtain is set, and projector's image is projected on curtain through Fresnel Lenses, is drawing
Face edge is Chong Die with the generation fusion of the picture of neighboring projectors；
It is characterized in that,
The distance between the projector and curtain
The distance between the Fresnel Lenses and curtain areWherein
W is practical projection width of the separate unit projector on curtain, and Tr is that projector lens project ratio, and Tr' is that projector will simulate
Projection ratio, D be merge overlap zone width, θ2For half angle of emergence of projector light to be simulated, S is fixed lens institute
Reserved edge offset amount.
2. Fusion Edges seamless tiled display system according to claim 1, which is characterized in that
The distance between the Fresnel Lenses and curtain are not more than
3. Fusion Edges seamless tiled display system according to claim 1, which is characterized in that the fixed lens institute is pre-
The edge offset amount S stayed is not more than 10cm.
4. Fusion Edges seamless tiled display system according to claim 1 or 2 or 3, which is characterized in that the Fresnel
The Facet angle beta of the prism position exit facet of lens isWherein θ1' and θ2' it is respectively luxuriant and rich with fragrance alunite
The corresponding incidence angle of screw thread and the angle of emergence of your lens, n are lens material refractive index.
5. a kind of Fresnel Lenses applied to the described in any item Fusion Edges seamless tiled display systems of Claims 1-4,
It is characterized in that,
The Facet angle beta of the prism position exit facet of the Fresnel Lenses isWherein θ1' and
θ2' be respectively Fresnel Lenses the corresponding incidence angle of screw thread and the angle of emergence, n be lens material refractive index.
6. a kind of method that Fusion Edges seamless tiled display system simulates long focus projector by short focus projector, the system
Include:
For projecting the curtain of image；
The projector of at least two short focus for being disposed in parallel in act back side, for image to be projected to curtain；
Fresnel Lenses between projector and curtain is set, and projector's image is projected on curtain through Fresnel Lenses, is drawing
Face edge is Chong Die with the generation fusion of the picture of neighboring projectors；
It is characterized in that the method includes,
Distance, which is arranged between curtain, in the projector isThe step of,
And distance is arranged between curtain in the Fresnel Lenses and isThe step of, wherein W is that separate unit projector exists
Practical projection width on curtain, Tr are that projector lens project ratio, and Tr' is projector's projection ratio to be simulated, and D is fusion overlapping
The width of band, θ2The edge offset amount reserved for half angle of emergence of projector light to be simulated, S for fixed lens.
7. according to the method described in claim 6, it is characterized in that,
The distance between the Fresnel Lenses and curtain are not more than
8. according to the method described in claim 6, it is characterized in that, the edge offset amount S that reserves of the fixed lens is little
In 10cm.
9. method described according to claim 6 or 7 or 8, which is characterized in that
The Facet angle beta of the prism position exit facet of the Fresnel Lenses isWherein θ1'
And θ2' be respectively Fresnel Lenses the corresponding incidence angle of screw thread and the angle of emergence, n be lens material refractive index.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611169531.9A CN106527024B (en) | 2016-12-16 | 2016-12-16 | A kind of Fusion Edges seamless tiled display system and Fresnel Lenses and the method that long focus projector is simulated by short focus projector |
| PCT/CN2017/096495 WO2018107782A1 (en) | 2016-12-16 | 2017-08-08 | Edge-blending seamless-splicing display system, fresnel lens and method for simulating long-focus projector by means of short-focus projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611169531.9A CN106527024B (en) | 2016-12-16 | 2016-12-16 | A kind of Fusion Edges seamless tiled display system and Fresnel Lenses and the method that long focus projector is simulated by short focus projector |
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| Publication Number | Publication Date |
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| CN106527024A CN106527024A (en) | 2017-03-22 |
| CN106527024B true CN106527024B (en) | 2019-01-18 |
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| CN201611169531.9A Active CN106527024B (en) | 2016-12-16 | 2016-12-16 | A kind of Fusion Edges seamless tiled display system and Fresnel Lenses and the method that long focus projector is simulated by short focus projector |
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| CN (1) | CN106527024B (en) |
| WO (1) | WO2018107782A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106527024B (en) * | 2016-12-16 | 2019-01-18 | 广东威创视讯科技股份有限公司 | A kind of Fusion Edges seamless tiled display system and Fresnel Lenses and the method that long focus projector is simulated by short focus projector |
| CN107071377A (en) * | 2017-05-12 | 2017-08-18 | 杭州隅千象科技有限公司 | Method, equipment, the system of short focus ring curtain output are realized based on multichannel ray machine |
| CN107659801B (en) * | 2017-05-12 | 2023-05-09 | 杭州一隅千象科技有限公司 | Cross-arrangement multi-direction ring curtain full-coverage projection method, system and projector |
| CN109036152A (en) * | 2018-09-30 | 2018-12-18 | 深圳市眸合科技有限公司 | A kind of optical system for realizing multi-screen seamless tiled display |
| 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 |
| US11493836B2 (en) * | 2019-08-14 | 2022-11-08 | Avalon Holographics Inc. | Light field projector device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0193088A2 (en) * | 1985-02-25 | 1986-09-03 | YUP Company Ltd. | Transmission type screen apparatus |
| JPH06308635A (en) * | 1993-04-26 | 1994-11-04 | Hitachi Ltd | Multiface multirear projector, rare projector used for the same and fresnel lens |
| CN203054435U (en) * | 2012-12-21 | 2013-07-10 | 广州中国科学院先进技术研究所 | Short-focus digital advertisement projection lamp |
| JP2014186249A (en) * | 2013-03-25 | 2014-10-02 | Dainippon Printing Co Ltd | Screen unit, multiscreen, back-face projection type display device |
| CN104321680A (en) * | 2012-03-29 | 2015-01-28 | 弗兰霍菲尔运输应用研究公司 | Projection display and method for projecting an overall image |
| CN106125492A (en) * | 2016-08-31 | 2016-11-16 | 海信集团有限公司 | Projection screen and the ultrashort out-of-focus projection system with this projection screen |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7699472B2 (en) * | 2004-09-24 | 2010-04-20 | Samsung Electronics Co., Ltd. | Multi-view autostereoscopic projection system using single projection lens unit |
| CN100403786C (en) * | 2005-04-30 | 2008-07-16 | 广东威创视讯科技股份有限公司 | Split display image edge blending method for large screen |
| CN2824079Y (en) * | 2005-04-30 | 2006-10-04 | 广东威创日新电子有限公司 | Large screen image seamless splicing display |
| JP5217497B2 (en) * | 2008-02-26 | 2013-06-19 | ソニー株式会社 | Image projection system, control apparatus, image projection method, program, and recording medium |
| CN101334529A (en) * | 2008-08-01 | 2008-12-31 | 广东威创视讯科技股份有限公司 | Optical apparatus for splicing wall display equipment |
| JP5388938B2 (en) * | 2010-04-26 | 2014-01-15 | 三菱電機株式会社 | TRANSMISSION SCREEN, TRANSMISSION SCREEN IMAGE DISPLAY METHOD, AND PROJECTION DISPLAY DEVICE |
| CN106527024B (en) * | 2016-12-16 | 2019-01-18 | 广东威创视讯科技股份有限公司 | A kind of Fusion Edges seamless tiled display system and Fresnel Lenses and the method that long focus projector is simulated by short focus projector |
-
2016
- 2016-12-16 CN CN201611169531.9A patent/CN106527024B/en active Active
-
2017
- 2017-08-08 WO PCT/CN2017/096495 patent/WO2018107782A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0193088A2 (en) * | 1985-02-25 | 1986-09-03 | YUP Company Ltd. | Transmission type screen apparatus |
| JPH06308635A (en) * | 1993-04-26 | 1994-11-04 | Hitachi Ltd | Multiface multirear projector, rare projector used for the same and fresnel lens |
| CN104321680A (en) * | 2012-03-29 | 2015-01-28 | 弗兰霍菲尔运输应用研究公司 | Projection display and method for projecting an overall image |
| CN203054435U (en) * | 2012-12-21 | 2013-07-10 | 广州中国科学院先进技术研究所 | Short-focus digital advertisement projection lamp |
| JP2014186249A (en) * | 2013-03-25 | 2014-10-02 | Dainippon Printing Co Ltd | Screen unit, multiscreen, back-face projection type display device |
| CN106125492A (en) * | 2016-08-31 | 2016-11-16 | 海信集团有限公司 | Projection screen and the ultrashort out-of-focus projection system with this projection screen |
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| Publication number | Publication date |
|---|---|
| WO2018107782A1 (en) | 2018-06-21 |
| CN106527024A (en) | 2017-03-22 |
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