CN106898265A - The system and its method of adjustment of rear projection splicing wall - Google Patents
The system and its method of adjustment of rear projection splicing wall Download PDFInfo
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- CN106898265A CN106898265A CN201710164581.6A CN201710164581A CN106898265A CN 106898265 A CN106898265 A CN 106898265A CN 201710164581 A CN201710164581 A CN 201710164581A CN 106898265 A CN106898265 A CN 106898265A
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- optical
- projecting cell
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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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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Optics & Photonics (AREA)
- Projection Apparatus (AREA)
Abstract
A kind of back projection splicing wall system, comprising at least two display units：Display unit includes projecting cell, with primary optic axis；Screen unit, corresponds respectively to the projecting cell, with the second optical axis；And at least one smooth axle adjuster, the projecting cell is corresponded respectively to, and adjust the primary optic axis respectively with the second corresponding optical axis relative position.Projecting cell primary optic axis in wherein at least one display unit is misaligned with the optical axis of screen unit second.
Description
Technical field
The present invention relates to the system and its method of adjustment of a kind of rear projection splicing wall, the rear-projection of espespecially a kind of adjustable optical axis
The system and its method of adjustment of shadow combination.
Background technology
Traditional tv wall is formed by the multiple box body splicings with screen unit, related prior art be mostly for
How the improvement of chair mechanisms, casing radiating is designed, and how screen is hung up on casing, or the mechanism of casing designs to improve screen
Seam between curtain unit, makes its seam can reach minimum, or adjust the screen of the casing, intraware easy disassembly
Deng improvement, such as in the patent application document of publication number CN201548800, it discloses a kind of large display screen curtain, specially
A kind of rear projection splicing wall, what is mainly improved is the position regulator of back projection speculum, is to realize not removing screen
In the case of, speculum is adjusted from before back projecting box, the operating efficiency of adjustment is installed to improve.
Jointed television wall more universal on the market at present, due to its size or the relation of position, for the sight of different visual angles
For reward person, in the brightness that the edge of jointed television wall is cast out, generally can all decay.For example, with the eyes of audience
Height when looking squarely, with jointed television wall in close to the brightness of the sub- display screen of eye-level the audience can be made can normally to see
See, but in jointed television wall higher position or the sub- display screen apart from eye-level farther out brightness, for audience
Then seem brightness not enough, especially the marginal position of jointed television wall sub- display screen it is more obvious it is dimmed.
Therefore, expect have a kind of system of rear projection splicing wall, can overcome beholder because of brightness caused by subtense angle not
Uniformly with the problem of luminance shortage.
Post it is therefore, inventor is to think and improve the intention invented in view of the deficiency of known technology, and this case can be invented eventually
" system and its method of adjustment of rear projection splicing wall ".
The content of the invention
The main purpose of this case is to provide a kind of back projection splicing wall system, and beholder is when the image of combination is watched
Visual angle can cause the decay of brightness, for example the brightness near the edge zone of combination for beholder not
Foot, on edge zone particularly in vertical direction, back projection splicing wall system of the present invention includes plural optical display unit,
It can suitably adjust corresponding optical display unit according to the difference at the visual angle of beholder to each optical display unit
Optical axis, so as to project the picture light beam of beholder be deflected toward the direction of beholder, and beholder can be improved and watch splicing
The picture display parameters of wall are reinforced, for example, increase the parameters such as brightness, chroma, the contrast at edge.
The another main purpose of this case is to provide a kind of back projection splicing wall system, comprising：At least two projecting cells,
All there is primary optic axis；At least two screen units, correspond respectively at least two projecting cell, and all have the second light
Axle；And at least two smooth axle adjusters, at least two projecting cell is corresponded respectively to, and make those primary optic axis respectively
At least one is misaligned with the second corresponding optical axis.
Another main purpose of this case is to provide a kind of method of adjustment for being used for a back projection splicing wall system, the rear-projection
Shadow joined screen system includes at least two projecting cells, corresponds respectively at least two screen lists of at least two projecting cell
Unit and at least two smooth axle adjusters of at least two projecting cell are corresponded respectively to, respectively the projecting cell all has the
One optical axis, respectively all with display screen, respectively with the second optical axis, the method is comprised the steps of the display screen projecting cell：Point
Not corresponding primary optic axis is adjusted with the respectively light axle adjuster；And make at least one and phase of each primary optic axis
Corresponding second optical axis is misaligned.
The another main purpose of this case is to provide a kind of optical projection system, and resultant image is shown jointly, and the optics is thrown
Shadow system is included：Plural optical display unit, wherein：Respectively the plural optical display unit has projecting cell and screen unit；Respectively
The projecting cell has primary optic axis；Respectively the screen unit corresponds to the related projecting cell, and with display screen, the display screen
With the second optical axis；And at least one of the plural optics display primary optic axis the second optical axis corresponding thereto is misaligned.
Another main purpose of this case is to provide a kind of optical projection system, comprising：Two projecting cells, all with
One optical axis；And two screen units, two projecting cells are corresponded respectively to, and respectively have display screen, the screen has the second light
One of axle, the wherein at least primary optic axis the second optical axis corresponding thereto are misaligned.
Another main purpose of this case is to provide a kind of method of adjustment for optical projection system, the optical projection system
System includes at least two projecting cells and corresponds respectively at least two screen units of at least two projecting cell, respectively
The projecting cell all has primary optic axis, respectively screen unit tool display screen, and the display screen has the second optical axis, and the method is included
The following steps：According to the splicing height and viewing distance and viewing height of at least two screen unit of the optical projection system
To calculate the side-play amount of the second corresponding optical axis of primary optic axis；And the second corresponding light is adjusted according to the respectively side-play amount
Axle.
In order to above-mentioned purpose, feature and the advantage of the present invention can be become apparent, preferred embodiment cited below particularly, and
Coordinate accompanying drawing, be described in detail below.
Brief description of the drawings
The schematic diagram of the adjustment light path of the optical projection system of the preferred embodiment that Fig. 1 (a) displays are conceived according to the present invention.
The schematic diagram of the adjustment light path of the optical projection system of the preferred embodiment that Fig. 1 (b) displays are conceived according to the present invention.
The side-looking of the projected picture after the optical axis OPC1 changes of the preferred embodiment that Fig. 1 (c) displays are conceived according to the present invention
Figure.
Fig. 1 (d) displays are faced according to the projected picture after the optical axis OPC1 changes of the preferred embodiment of present invention conception
Figure.
The front perspective view of the optical projection system 20 of the preferred embodiment that Fig. 2 (a) displays are conceived according to the present invention.
The side view of the optical projection system 20 of the preferred embodiment that Fig. 2 (b) displays are conceived according to the present invention.
Fig. 2 (c) displays project image to screen unit 24 according to the speculum 25 of the preferred embodiment of present invention conception
Schematic diagram.
The schematic diagram of the adjustment projected picture 27 of the preferred embodiment that Fig. 2 (d) displays are conceived according to the present invention.
The method of adjustment for optical projection system of the preferred embodiment that Fig. 3 displays are conceived according to the present invention.
The schematic diagram of the projected position adjuster 26 of the preferred embodiment that Fig. 4 displays are conceived according to the present invention.
The schematic diagram of the optical projection system 30 of the preferred embodiment that Fig. 5 (a) displays are conceived according to the present invention.
The schematic diagram of the optical display unit 31,31 ' of the preferred embodiment that Fig. 5 (b) displays are conceived according to the present invention.
Fig. 5 (c) displays according to the visual angle before not the adjusting of preferred embodiment of present invention conception and gain graph of a relation.
The brightness that Fig. 5 (d) displays are adjusted according to three layers of non-off-axis of vertical combination 37 of the preferred embodiment of present invention conception
The schematic diagram of degree.
After Fig. 5 (e) displays are adjusted according to three layers of vertical combination 37 of the preferred embodiment of present invention conception through off-axis
The schematic diagram of briliancy.
Fig. 5 (f) displays are according to the relation of the visual angle Θ and adjustment side-play amount OFS3 of the preferred embodiment of present invention conception
Schematic diagram.
Fig. 5 (g) displays are according to the adjustment side-play amount of combination 37 of three layer heights of the preferred embodiment of present invention conception
Numerical value.
The method of adjustment for optical projection system 30 of the preferred embodiment that Fig. 6 displays are conceived according to the present invention.
The schematic diagram of the optical projection system 40 of the preferred embodiment that Fig. 7 displays are conceived according to the present invention.
The schematic diagram of the optical projection system 50 of the preferred embodiment that Fig. 8 (a) displays are conceived according to the present invention.
The schematic diagram of screen unit 54 ' of the asymmetrical cutting of the preferred embodiment that Fig. 8 (b) displays are conceived according to the present invention.
The schematic diagram of screen unit 54 of the symmetrical cutting of the preferred embodiment that Fig. 8 (c) displays are conceived according to the present invention.
Symbol description
The projecting cell of 10 optical projection system 101
103 view and admire the display unit of region 41,41 ', 51,51 '
OPC1, OPC1 ', OPC2, OPC2 ' optical axis Reg1 first areas
USR1, USR2 beholder's Reg2 second areas
The light axle adjuster of DEV side-play amounts 104 35,35 '
1010,220 330,330 ' the projected position adjuster of optical lens 105,26,26 ' 36,36 '
1012,221,38,38 ' projector's stamen the first central shafts of AC1
106,106 ', 106 " central shafts of projected picture AC2 second
Dir1 first direction Dir2 second directions
The casing of 20 back projection splicing wall system 21,21 '
The projecting cell of 22,22 ' light axle adjuster 23,23 ' 33,33 ', 42,42 ', 52,52 '
The speculum of 102,24,24 ' 34,34 ', 44,44 ', 54,54 ' screen unit 25,25 '
P1, P1 ' central point OP1, OP1 ', OP5O ' optical axis
CA1, CA1 ', CA3, CA3 ', CA5, CA5 ' and central axis DIR3, DIR4 directions
The display unit of 30,40,50 optical projection system 28,28 ', 31,31 ' 371,372,373
The projected picture of 32 resultant image 320,320 '
OP3, OP3 ', OP4, OP4 ', OP7, OP7 ' and primary optic axis OP5, OP5 ' OP6, OP6 ', OP8, the OP8 optical axis of ' second
POS1, POS2, H1 height OFS3, OFS3 ', OFS4 ', OFS5 ' side-play amounts
The distance between 340,340 ', 440,440 ', 540,540 ' optical module D1 beholders USR2 and optical projection system 30
Reg4 views and admires region OPT, OPT ' optimization angles
The asymmetric centers of circle of center CC ' of OC optical projection systems 30
37 3 layers of symmetrical centers of circle of vertical combination CC
LUM1, LUM1 ' briliancy
LT320, LT320 ' projected picture light VH1 viewing differences in height
Specific embodiment
The present invention provides following preferred embodiment to illustrate the spirit of this creation, is omitted for the more Compact representations present invention
Members, and can be combined with each other to form new embodiment between each embodiment, and specific shape in the preferred embodiment
Shape, structure, device and parameter value are not used for limiting this creation, all to know this those skilled in the art when make change or retouching, its
All in the range of this creation.
Fig. 1 (a) and Fig. 1 (b) is the adjustment of the optical projection system 10 for showing the preferred embodiment according to present invention conception
The schematic diagram of light path.Optical projection system 10 is comprising projecting cell 101, screen unit 102 and views and admires region 103, the projection
Unit 10 has optical axis OPC1, and it is weight that the screen unit 102 has optical axis OPC2, the two optical axis OPC1, OPC2 in Fig. 1 (a)
Close in same dotted line, after the light projected from the projecting cell 101 is via the screen unit 102, is radiated at this and views and admires region 103
First area Reg1, first area Reg1 is to be symmetrical in these optical axises OPC1, OPC2.Screen unit 102 can be optics group
Part, such as lens or level crossing.Projecting cell 101 in Fig. 1 (b) is then that offset by one relative to the screen unit 102
The optical axis OPC1 of side-play amount DEV, wherein projecting cell 101 produces skew and forms optical axis OPC1 ', the optical axis of screen unit 102
OPC2 ' does not offset then, still in the position of original optical axis OPC2.The light that the projecting cell 101 is projected is via the screen unit 102
Afterwards, be radiated at the second area Reg2 for viewing and admiring region 103, second area Reg2 be asymmetric with these optical axises OPC1 ' with
OPC2’.In a preferred embodiment, the position screen unit higher in the screen unit 102 is the optical projection system 10
When 102, for the beholder USR1 in Fig. 1 (a), the light in region 103 is viewed and admired due to being radiated at mostly of a relatively high
Position so that beholder USR1 sees that the brightness of image is dark.And after the position skew of the projecting cell 101, for
For beholder USR1 in Fig. 1 (b) on same position, because the optical axis OPC1 of the projecting cell 101 offset by this
Side-play amount DEV and form optical axis OPC1 ', make to view and admire region Reg1 moves toward the position of lower, is radiated at and views and admires region 103
Light view and admire region Reg2 mostly in relatively low position so that beholder USR1 sees that the brightness of image is unlikely to decay
Too much.
Fig. 1 (c) is referred to, it is the side view of the projected picture after present pre-ferred embodiments optical axis OPC1 changes.Please
Refering to Fig. 1 (d), it is the front view of the projected picture after present pre-ferred embodiments optical axis OPC1 changes.Preferably implement one
In example, the optical projection system 10 further includes light axle adjuster 104 and projected position adjuster 105, and the projecting cell 101 is wrapped
Containing optical lens 1010 and projector's stamen 1012, projector's stamen can be digital micromirror display (DMD) chip, LCD (liquid crystal displays
Device, Liquid Crystal Display) display module or LCOS (liquid crystal on silicon, Liquid Crystal on Silicon)
Display module.The optical axises of the optical axis OPC1 equivalent to optical lens 1010 of the projecting cell 101.The light axle adjuster 104 is carried
The optical lens 1010, and be configured between the optical lens 1010 and projector's stamen 1012.In a preferred embodiment, should
Optical lens 1010 has the first central axis AC 1, the light axle adjuster 104 is moved toward first direction Dir1 by optimizing and revising
It is dynamic, the optical lens 1010 is changed with the relative position of projector's stamen 1012, while also change former projected picture 106 and
Form the projected picture 106 ' after optical axis changes.
After light shaft offset, the optical axis OPC1 ' of projecting cell 101 is misaligned with the optical axis OPC2 of screen unit 102, i.e.
Central axis with screen unit 102 is misaligned.Meanwhile, projected picture 106 ' is misaligned with screen unit 102, if projected picture
106 ' do not fall within screen unit 102, then further must be adjusted using the projected position adjuster 105.Being somebody's turn to do in Fig. 1 (c)
Projected position adjuster 105 carries the projecting cell 101, and makes that the projecting cell 101 is translated or elevating movement is adjusted,
And change projected picture 106 ' and the relativeness of screen unit 102.The projecting cell 101 is for example set to be moved toward second direction Dir2
Move, made it away from or near the screen unit 102 while moving the projecting cell 101, so that the projected picture 106 " and screen
Unit 102 overlaps, such as the projected picture 106 in Fig. 1 (d) " shown in, allowing projected picture 106 " region covered is equal to screen
The region of unit 102.
Above-mentioned preferred embodiment only includes beholder USR1 in relatively low position, and screen unit 102 and throwing
In the example of of a relatively high position, this principle also can be applicable in different relative positions shadow unit 101.Preferably implement one
In example, the optical projection system 10 can include at least two screen units 102 and at least two projections corresponding thereto are single
Unit 101, respectively the screen unit 102 projecting cell 101 corresponding thereto all can be in response to the need in the region of beholder USR1 positions
Ask, and change the relative position between the projecting cell 101 and the screen unit 102, and then can reach and adjust respectively its optical axis
OPC1 so that the eyes for reaching beholder USR1 in the screen unit 102 of diverse location can present be relatively close on the whole
Even brightness.
Fig. 2 (a) is referred to, it is the front perspective view of present pre-ferred embodiments optical projection system 20.Refer to Fig. 2
B (), it is the side view of present pre-ferred embodiments optical projection system 20.Optical projection system 20 can be rear projection splicing wall
System.Please refer to Fig. 2 (a) and Fig. 2 (b), optical projection system 20 includes at least two display units 28,28 ', described
At least two display units 28, in 28 ', display unit 28 includes projecting cell 23, screen unit 24 and light axle adjuster
22.Another display unit 28 ' includes projecting cell 23 ', screen unit 24 ' and light axle adjuster 22 '.Preferably implement herein
In example, described display unit 28,28 ' includes light axle adjuster 22,22 ' respectively, then can not in other preferred embodiments
Light axle adjuster is included comprising light axle adjuster 22,22 ' or one of display unit.Projecting cell 23,23 ', all with light
Axle OP1, OP1 ', screen unit 24,24 ' corresponds respectively to projecting cell 23,23 ', and light axle adjuster 22,22 ' is corresponded respectively to
Projecting cell 23,23 ', and make respectively each optical axis OP1, OP1 ' at least one with perpendicular to corresponding screen unit
24,24 ' central axis CA1, CA1 ' is misaligned.Screen unit 24,24 ' herein is all optical axis in the optics at its Ji He center
Component, therefore its center axis CA1, CA1 ' are respectively equal to the optical axis of screen unit 24,24 '.In this preferred embodiment, optical axis
Adjuster 22 adjusts optical axis OP1, and makes the optical axis OP1 of the projecting cell 23 in display unit 28 and the optical axis of screen unit 24
CA1 is misaligned.In a further preferred embodiment, optical axis OP1 and optical axis CA1 misaligned tune can be made without light axle adjuster 23
Perfect square formula, please hold and be explained later.
Screen unit 24,24 ' can be optical module, such as lens or level crossing.In Fig. 2 (a), CA1 is and the screen
The vertical central axis of unit 24, CA1 ' is the central axis vertical with the screen unit 24 '.These above-mentioned components can all divide
Casing 21,21 ' is not configured at, and such as casing 21 can include projecting cell 23, screen unit 24 and light axle adjuster 22, case
Body 21 ' can include projecting cell 23 ', screen unit 24 ' and light axle adjuster 22 '.Each casing 21,21 ' further includes projection
Position regulator 26,26 ' and speculum 25,25 '.Speculum can not be needed in a further preferred embodiment, and it can be according to projection
Depending on the configuration relation of unit 23,23 ' and screen unit 24,24 '.
Fig. 2 (c) is referred to, it is the signal that present pre-ferred embodiments speculum 25 projects image to screen unit 24
Figure.The projected picture 27 that optical lens 220 will show is projected on the screen unit 24 via the speculum 25.In Fig. 2 (c)
In, the light projected from optical lens 220 reaches the screen unit 24, the optical axis of the optical lens 220 via the speculum 25
The optical axis OP1 of OP1, the i.e. projecting cell 23 is misaligned with the central axis CA1 of the screen unit 24, can simultaneously refer to Fig. 2
A (), the optical axis OP1 ' of another projecting cell 23 ' then overlaps with the central axis CA1 ' of the screen unit 24 '.Above-mentioned center
Axle, central axis refer to the geometrical central axis or geometric centre axes of optical module, such as double-sided symmetrical circular lens shape
Geometrical central axis are that the geometrical central axis of rectangular shape are right by its by its center of circle and the central shaft vertical with circular face
Linea angulata intersection point and the central shaft vertical with the face of rectangle.In Fig. 2 (c), which show light axle adjuster 22 by optical lens 220
(for example translated) toward direction Dir3 skews, the relative position between projector's stamen 221 and optical lens 220 changes so that from light
The light that camera lens 220 is projected reaches a part for the projected picture 27 of the screen unit 24 via the speculum 25 not in screen list
In the range of unit 24, now can be used projected position adjuster 26 to adjust, the screen unit 24 is covered the projected picture 27,
As shown in Fig. 2 (d).
Fig. 2 (d) is referred to, it is the schematic diagram that present pre-ferred embodiments adjust projected picture 27.Projected position is adjusted
Device 26 (for example translates) projecting cell 23 toward direction Dir4 skews, after crossing the adjustment of the projected position adjuster 26, the screen
Unit 24 covers the projected picture 27.
Fig. 3 is referred to, it is the method for adjustment that present pre-ferred embodiments are used for an optical projection system 20.Can join simultaneously
Fig. 2 (a)~2 (c) is read, the optical projection system 20 includes at least two optical display units 28,28 ', respectively optics display is single
Unit 28,28 ' includes projecting cell 23,23 ', and it has primary optic axis OP1, OP1 ' and provides projected picture；And screen unit
24,24 ', correspond respectively to the projecting cell 23,23 ' and with the second optical axis CA1, CA1 ', the projected picture is projected on the screen
Curtain unit 24,24 ', the method is comprised the steps of：Step S101, the primary optic axis OP1 at least one display unit of adjustment,
OP1 ', makes it misaligned with the second corresponding optical axis CA1, CA1 '.How to adjust optical axis and the optical projection system 20 can be made
Overall brightness tend to maximize with homogenization, please hold and be explained later.
Fig. 4 is referred to, it is the schematic diagram of this case preferred embodiment projected position adjuster 26.The projected position adjuster
26 carry the corresponding projecting cell 23, and can translate simultaneously Sht, lifting UD, etc. motion so that corresponding shadowgraph
Face 27 overlaps with the display screen of the screen unit 24.
Fig. 5 (a) is referred to, it is the schematic diagram of present pre-ferred embodiments optical projection system 30.The optical projection system
The plural display unit of the tool of system 30, such as display unit 31,31 ' ... etc..Fig. 5 (b) is referred to, it is present pre-ferred embodiments
The schematic diagram of display unit 31,31 '.The plural display unit 31,31 ' ... etc., to show resultant image 32 jointly, and is beneficial to
Beholder USR2 in relative distant place is watched, wherein respectively the plural display unit 31,31 ' is with projecting cell 33,33 ' and screen
Unit 34,34 ', respectively, with primary optic axis OP3, OP3 ', respectively the screen unit 34,34 ' is corresponding to phase for the projecting cell 33,33 '
Close the projecting cell 33,33 ', and with optical module 340,340 ' and the central axis perpendicular to the optical module 340,340 '
CA3, CA3 ', respectively the optical module 340,340 ' is with second optical axis OP6, OP6 ', wherein at least plural primary optic axis OP3,
One of OP3 ' the second optical axis OP6, OP6 ' corresponding thereto is misaligned.In the second optical axis of optical module 340,340 ' herein
OP6, OP6 ' it is the optical axis of the screen unit 34,34 '.
For example in figure five (b), light axle adjuster 35 down adjusts optical lens 330, makes projector's stamen 38 and the light
The relative position for learning camera lens 330 changes, and is up adjusted similar to the optical lens 1010 in Fig. 1 (c) and makes projected picture 106 past
Upper translation turns into projected picture 106, and optical lens 330 herein is then down to adjust relative to projector's stamen 38 so that throw
Shadow picture (not shown) is down translated, therefore need to up raise projected position adjuster 36 makes display unit 34 cover shadowgraph
Face.Simultaneously so that primary optic axis OP3 up offset by side-play amount OFS3, similar to Fig. 1 (b), projecting cell 101 relative to
Screen unit 102 up offsets and causes down to be deflected from the light of the outgoing of screen unit 102, the optics of projecting cell 33 herein
The primary optic axis OP3 of camera lens 330 up offsets so that primary optic axis OP3 is misaligned with second optical axis OP6, the screen list
Relative position between unit 34 and the optical lens 330 changes so that the light LT320 of projected picture 320 down deflects an angle
Degree, this can compensate for beholder USR2 because visual angle relation caused by display parameters defect, the display parameters be, for example, projection
The brightness of picture 320, chroma or contrast etc..Another location adjuster 36 ' is then not adjust, while light axle adjuster 35 ' is also
Do not adjust, projector's stamen 38 ' does not change with the relative position of the optical lens 330 ' so that primary optic axis OP3 ' and second
Between optical axis OP6 ' without skew side-play amount OFS3 '=0, the relative position between the screen unit 34 ' and the optical lens 330 '
Put and also do not change so that the light of projected picture 320 ' LT320 ' is flatly projected, this is applied to the eyes of beholder USR2
When height is close with the height of screen unit 34 '.
In Fig. 5 (a), the eyes viewing height H1 of the beholder USR2 is different from the height of the central axis CA3, CA3 '
Degree.For example, the height H1 of the eyes of the beholder USR2 is calculated since the ground of the whereabouts of optical projection system 30
It is highly.Please refer to Fig. 5 (b), at least plural optical axis OP3, one of OP3 ' optical modules 340 corresponding thereto,
340 ' the second optical axis OP6, OP6 ' is misaligned, and the preferably resultant image 32 is obtained in order to sharp viewing USR2 person is considerable.For example, working as
Display unit 31 is larger with the visual angle of the eyes of beholder USR2, and the optical axis of optical camera lens 330 can up offset the skew
Amount OFS3, makes projected picture 320 be deflected towards the eyes of beholder USR2, and can obtain and preferably watch parameter, including preferable
Brightness, chroma, contrast, GTG etc..And the visual angle of working as the eyes of display unit 31 ' and beholder USR2 it is smaller when, may be selected compared with
Optical axis OP3 ' the side-play amounts of optical lens 330 ' are not adjusted by a small margin.Certainly also may be selected according to the viewing of beholder's USR2 eyes
Between the height POS1, POS2 and beholder USR2 and optical projection system 30 of height H1 and display unit 31,31 ' away from
Make appropriate adjustment from D1.The height POS1 (with the center of the display unit) of display unit 31 for example can be used to subtract
The height H1 of beholder's USR2 eyes and to obtain angular height poor, angular height difference and beholder USR2 to optical projection system
The big I of the ratio of the distance between 30 D1 is used as the how many foundation of adjustment side-play amount.That is, OFS3=K × FL1 × (POS1-
H1) ÷ D1 (the first formula), wherein K is constant, and when beholder USR2 is closer to display unit 31, then the ratio is bigger, therefore
The side-play amount OFS3 of the optical axis to be adjusted is also bigger.Conversely, when beholder is further away from display unit 31, then the ratio is got over
It is small, therefore the side-play amount OFS3 of the optical axis to be adjusted is also smaller.Splicing the height POS1, POS2 of display unit 31,31 ' be with
On the basis of the position of the position of the optical centre of optical module 340,340 ' or the geometric center of display unit 31,31 '.
Fig. 5 (c) is referred to, it is the graph of a relation at the visual angle before present pre-ferred embodiments are not adjusted and gain, is not adjusted
Preceding optical axis OP3, OP3 ' is the second optical axis OP6, OP6 ' coincidence with optical module 340,340 '.Transverse axis represents beholder
USR2 represents beholder USR2 in the optical projection system 30 to the visual angle of the center OC of the optical projection system 30, the longitudinal axis
The brightness of the gain of heart OC, such as light or intensity.Solid line represent the brightness in the horizontal direction of optical projection system 30 with
The change at visual angle, dotted line represents the brightness in vertical direction of optical projection system 30 with the change at visual angle.From Fig. 5
C () understands, when visual angle is horizontally offset from about 25 degree of center OC, the observable brightness decays of beholder USR2 be
/ 2nd of the center OC of the optical projection system 30.Then decay in vertical direction faster, when visual angle is inclined in vertical direction
At only about 12 degree from center OC, beholder USR2 is with regard to center OC that observable brightness decay is in the optical projection system 30
1/2nd.It can be seen that needing adjustment optical axis OP3 relative to pole in horizontal direction in vertical direction.
Fig. 5 (d) is referred to, it is showing for the briliancy of the vertical combination 37 of three layers of present pre-ferred embodiments non-off-axis adjustment
It is intended to.Observed from the vertical midpoint of middle display unit 372 is as a reference point, upper, middle and lower display unit 371,372,373
In the briliancy such as chart that are observed before its screen, solid line represents the whole video wall screen briliancy without off-axis adjustment.
Fig. 5 (e) is referred to, it is the briliancy after the vertical combination 37 of three layers of present pre-ferred embodiments is adjusted through off-axis
Schematic diagram.This calculating is according to 60 inch 16:Based on 9 display units, can simultaneously refering to refering to Fig. 5 (g), the height of each display unit
Degree is all 0.75m, and camera lens is watched to screen optical path length 0.82m from 6m distances.From middle display unit 372 it is vertical in
Point Lai Guan sides as a reference point, the off-axis of the display unit 371 adjustment 0.11m on upper strata, the quite degree (display of adjustment light projection+7.5
The light of projecting cell is projected and spent toward rise+7.5 in unit 371), the display unit 372 in middle level does not make off-axis adjustment, lower floor
(light of projecting cell projects past to the degree of the off-axis of display unit 373 adjustment -0.11m adjustment light projection -7.5 in display unit 373
- 7.5 are lowered to spend), then in the chart of visual angle and briliancy, solid line represents the whole screen briliancy of video wall in Fig. 5 (e), can substantially see
The brightness for going out upper sub-screen is improved.
Fig. 5 (f) is referred to, it is the signal of present pre-ferred embodiments visual angle Θ and the relation of adjustment side-play amount OFS3
Figure.In Fig. 5 (f), by optical lens 330 and screen optical path length FL1, projector's stamen 38 central point to the optical lens
Angle Θ between straight line that 330 central point is constituted and primary optic axis OP3, side-play amount OFS3 can be calculated.And
Understand that angle Θ is equal to visual angle Θ from Fig. 5 (f), visual angle Θ again can be according to the viewing distance D1 of beholder USR2 and viewing height
Differ from VH1 to be calculated, i.e. visual angle Θ=Arctan (VH1/D1).Therefore can calculate side-play amount OFS3=K × FL1 ×
(VH1/D1), wherein K is 0.5~1.5 constant, VH1=POS1-H1.POS1 is defined as the screen center position of the display unit
Put.K is the empirical value in practice, and the optical module 340 of K values and optical lens 330 and screen unit 34 undesirable situation
It is associated.Summary understands, by acquirement viewing distance D1, viewing difference in height VH1 and camera lens and screen optical path length
After the parameters such as FL1, you can calculate side-play amount OFS3.Fig. 5 (g) draws a combination for 3 layer heights, and how is its off-axis direction
Arrangement and the numerical value of side-play amount.Skew Number values=0.75m ÷ 6m × 0.82m × K=0.11m.(K=1 is in an ideal case).
Fig. 6 is referred to, it is the method for adjustment that present pre-ferred embodiments are used for optical projection system 30.Please refer to
Fig. 5 (a)~5 (f) and Fig. 6, the optical projection system 30 includes plural display unit 31,31 ', respectively the plural display unit 31,
31 ' tool projecting cell 33,33 ' and screen units 34,34 ', respectively the projecting cell 33,33 ' is with optical axis OP3, OP3 ', and provides
Projected picture 320,320 ', respectively the screen unit 34,34 ' with optical axis OP6, OP6 ', the i.e. optical projection system 30 comprising extremely
Lack two projecting cells 33,33 ' and correspond respectively at least two screen units of at least two projecting cell 33,33 '
34,34 ', the method is comprised the steps of：Step S201, shows according to the optical axis OP3, OP3 ' and optical axis OP6, OP6 ' are misaligned
Show splicing the height POS1, POS2 of unit and the difference of human eye height H1, and viewing distance D1 to calculate a side-play amount OFS3.Step
Rapid S202, corresponding primary optic axis OP3 is adjusted according to side-play amount OFS3, makes optical axis OP3 and corresponding optical axis OP6 not
Overlap.
Please refer to Fig. 5 (a)~5 (f), in figure 6 the optical projection system 30 further include correspond to this at least two
At least two smooth axle adjusters 35 of individual projecting cell 33,33 ', 35 ' and at least two projected position adjusters 36,36 ',
The method of adjustment further includes the following steps：Estimate the respectively display unit 31,31 ' and the corresponding optimization angle for viewing and admiring region Reg4
Degree OPT, OPT '.The corresponding light axle adjuster is adjusted in response to corresponding optimization the angle OPT, OPT ' of Viewing Area Reg4
35,35’.The angle OPT, OPT ' of the optimization can be according to angular height difference and beholder USR2 between optical projection system 30
The size of the ratio apart from D1 weigh, for example can be used the height POS1 of display unit 31 to subtract beholder's USR2 eyes
Height H1 and to obtain angular height poor, and it is bigger to work as angular height difference, and beholder USR2 is between optical projection system 30
The situation smaller apart from D1 under, then the ratio is bigger, therefore the adjustment amplitude of optical axis is also bigger, such as the first foregoing formula institute
Show.The corresponding projected position adjuster 36,36 ' of adjustment, makes corresponding projecting cell 33,33 ' translate or elevating movement.
Corresponding projected picture 320,320 ' is set to be overlapped with the screen unit 34,34 '.
Fig. 7 is referred to, it is the schematic diagram of present pre-ferred embodiments optical projection system 40.The optical projection system 40
Comprising at least two display units 41,41 ', each display unit 41,41 ' includes projecting cell 42,42 ' and screen unit
44,44 ', the projecting cell 42,42 ' all has optical axis OP4, OP4 '.The screen unit 44,44 ', correspond respectively to this two
Individual projecting cell 42,42 ', and respectively there is optical module 440,440 ', those optical modules 440,440 ' have optical axis respectively
OP8, OP8 ', the light of one of wherein at least two optical axises OP8, OP8 ' optical modules 440,440 ' corresponding thereto
OP8, OP8 ' are misaligned for axle.
In the figure 7, the optical axis OP4 of projecting cell 42 overlaps with the optical axis OP8 of the optical module 440, and projects single
Optical axis OP8s ' of the optical axis OP4 ' of unit 42 ' then with the optical module 440 ' is misaligned.In this embodiment, optical axis OP4 ' is past
Under offset by side-play amount OFS4 ', this by the image for projecting it toward one angle of upper deflecting, this be applied to optical module 440 '
When being less than beholder.If optical axis OP4 ' up offset by into side-play amount OFS4 ', this is past by the image for projecting it
One angle of lower deflection, when this is above beholder suitable for optical module 440 '.
Similar to be similar in Fig. 5 (b) of previous embodiment, described display unit 41,41 ', further includes light axial adjustment respectively
Device 35,35 ' and projected position adjuster 36,36 ', the projected position light axle adjuster 36,36 ' correspond respectively to the projection
Unit 33,33 '.The light axle adjuster 35,35 ' corresponds respectively to the projecting cell 33, and 33 ', and the respectively optical axis is adjusted respectively
OP3, OP3 ', make the central shaft of respectively at least one screen unit 34,34 ' corresponding thereto of optical axis OP3, OP3 '
CA3, CA3 ' are misaligned for line, or make at least one screen unit 34 corresponding thereto of respectively optical axis OP3, OP3 ',
34 ' the optical axis OP6, OP6 ' is misaligned, wherein optical module 440,440 ' optical centre and optical module 440,440 '
On same position, i.e. the central axis CA3, CA3 ' of those optical modules 440,440 ' are respectively equal to those light to geometric center
Axle OP6, OP6 '.Optical axis OP3, OP3 ' in Fig. 5 (b) central axis CA3, CA3 ' corresponding thereto are all misaligned, but
Can only optical axis OP3 it is misaligned with central axis CA3, according to size and the institute of screen unit 34,34 ' of the optical projection system 40
Position it is different and appropriate adjustment can be made.
Hold, respectively the projected position adjuster 36,36 ' carries the corresponding projecting cell 33,33 ', and by using
One optimizes and revises, make respectively respectively the projecting cell 33,33 ' with rotate, incline, translation or elevating movement, wherein corresponding throwing
Shadow picture 106 " overlaps with the screen unit 102, shown in such as Fig. 1 (d).
Similar to be similar in Fig. 2 (a) of previous embodiment, the optical projection system 40 includes two casings 21,21 ', respectively should
Casing 21,21 ' includes corresponding projecting cell 23,23 ', corresponding screen unit 24,24 ', corresponding light axial adjustment
Device 35,35 ' and corresponding projected position adjuster 36,36 '.
In a further preferred embodiment, the skew of optical axis can be adjusted directly by screen unit itself.Refer to Fig. 8
A (), it is the schematic diagram of present pre-ferred embodiments optical projection system 50.Fig. 8 (b) is referred to, it is of the invention preferably real
Apply the schematic diagram of screen unit 54 ' of an asymmetrical cutting.The optical projection system 50 includes two display units 51,51 ', each
Display unit 51,51 ' includes projecting cell 52,52 ' and screen unit 54,54 ', and the screen unit 54,54 ' all has light
Axle OP5, OP5 '.The screen unit 54,54 ', corresponds respectively to the projecting cell 52, and 52 ', and respectively there is optical module 540,
540 ' and central axis CA5, CA5 ', wherein at least two optical axis OP5 perpendicular to the optical module 540,540 ', OP5's '
The central axis CA5, CA5 ' of one of them optical module 540,540 ' corresponding thereto are misaligned, such as optical axis OP5 ' with
Central axis CA5 ' offset by a side-play amount OFS5 '.
In Fig. 8 (a), two projecting cells 52,52 ' have optical axis OP7, an OP7 ' respectively, those optical axises OP7, OP7's '
At least one is misaligned with corresponding optical axis OP5, OP5 '.Similarly, the optical axis OP5 ' in Fig. 8 (a) is up inclined
Side-play amount OFS5 ' is moved,, equivalent to the down horizontal-shift side-play amount OFS5 ' of the optical axis OP7 ' in relative position, this will make for it
The image that it is projected toward one angle of upper deflecting, when this is less than beholder suitable for optical module 540 '.If will
Optical axis OP5 ' down offset by side-play amount OFS5 ', and it is equivalent in relative position optical axis OP7 ' up horizontal-shift skew
Amount OFS5 ', the image for projecting it is down deflected an angle by this, and this is above beholder suitable for optical module 540 '
When.
In Fig. 8 (b), the screen unit 54 ' can include optical module, and the optical module can be with asymmetric center of circle CC's '
Mode is cut and is formed, wherein respectively the optical module forms two corresponding optical axises OP5, OP5 '.The light of the screen unit 54
Learning component 540 is cut with symmetrical center of circle CC, and shown in such as Fig. 8 (c), it is the screen that present pre-ferred embodiments symmetrically cut
The schematic diagram of unit 54.And the optical module 540 ' of the screen unit 54 ' is cut with asymmetric center of circle CC, in Fig. 8 (b)
If dotted line represents optical axis OP5O ' of the optical module 540 ' of screen unit 54 ' to be formed after symmetrical center of circle CC cuttings.And it is real
Line represents optical axis OP5 ' of the optical module 540 ' of screen unit 54 ' actually to be formed after asymmetric center of circle CC ' cuttings.
In Fig. 8 (b), the geometric center of screen unit 54 ' is the cornerwise intersection point of its rectangle, i.e., symmetrical center of circle CC, and
Optical axis OP5 ' after skew is by asymmetrical center of circle CC ' and vertical with the optical module 540 '.
Similar to above several embodiments, in this embodiment, the optical projection system 50 can be comprising two casings (as schemed
The 21 of 2 (a), 21 '), respectively the casing includes corresponding projecting cell 52,52 ' and corresponding optical module 540,540 ',
And the optical module 540,540 ' corresponding to cut making according to the position of the respectively casing, wherein corresponding optical axis OP5,
At least one of OP5 ' is misaligned with the central axis CA5, CA5 ' of corresponding optical module 540,540 '.With in Fig. 8 (a)
As a example by, optical axis OP5 overlaps with central shaft CA5, and optical axis OP5 ' is misaligned with central shaft CA5 '.Or those projecting cells 52,
The optical axis OP5 of at least one of 52 ' optical axis OP7, OP7 ' and corresponding optical module 540,540 ', OP5 ' are not weighed
Close, be in this embodiment that optical axis OP7 overlaps with optical axis OP5, optical axis OP7 ' is misaligned with optical axis OP5 '.
Embodiment：
1st, a kind of optical projection system, comprising：
At least two display units, respectively the display unit include：
Projecting cell, with primary optic axis, and provides projected picture；And
Screen unit, corresponding to the projecting cell, and with the second optical axis, the projected picture is projected on the screen unit；
It is characterized in that the primary optic axis at least one display unit is misaligned with the second optical axis.
2nd, system as described in Example 1, it is characterised in that the optical projection system is back projection splicing wall system.
3rd, the system as described in any of the above embodiment, it is characterised in that the primary optic axis and misaligned aobvious of the second optical axis
Show that unit is further included：
Light axle adjuster, is connected to projecting cell, misaligned with the second optical axis to adjust the primary optic axis.
4th, the system as described in any of the above embodiment, it is characterised in that the light axle adjuster is adjusted relatively according to side-play amount
The primary optic axis answered, the side-play amount be according to the primary optic axis and the misaligned display unit of the second optical axis splicing height and
Viewing distance is calculated with viewing height.
5th, the system as described in any of the above embodiment, it is characterised in that the splicing is highly POS1, the viewing distance is
D1, viewing height is H1, and camera lens is FL1 with screen optical path length, and the side-play amount is OFS, then OFS=K × FL1 × (POS1-
H1) ÷ D1, wherein K are constant, K=0.5~1.5.
6th, the system as described in any of the above embodiment, it is characterised in that：
Respectively the projecting cell is included：
Optical lens, with the primary optic axis, and
Projector's stamen, there is provided the projected picture；And
The light axle adjuster carries corresponding optical lens, and is configured at corresponding optical lens with corresponding throwing
Between shadow machine stamen, to adjust the relative position of corresponding optical lens and projector's stamen.
7th, the system as described in any of the above embodiment, it is characterised in that projector's stamen includes digital micromirror display
(DMD) chip, LCD display chips or LCOS display chips.
8th, the system as described in any of the above embodiment, it is characterised in that：
At least one display unit further includes projected position adjuster, and the projected position adjuster carries the corresponding throwing
Shadow unit, and projecting cell translation or elevating movement is adjusted the projected picture, the projected picture is covered the screen list
Unit.
9th, the system as described in any of the above embodiment, it is characterised in that：
Respectively the screen unit includes optical module, and respectively the optical module has corresponding second optical axis, and at least one
Individual optical module is cut and is formed in the way of the asymmetric center of circle.
10th, system as claimed in claim 9, it is characterised in that：
Respectively the optical module is cut according to the stitching position where it.
11st, a kind of back projection splicing wall system, comprising：
At least two display unit, respectively the display unit include：
Projecting cell, with primary optic axis, and provides projected picture；And
Screen unit, corresponding to the projecting cell, and with the second optical axis, the projected picture is projected on the screen unit,
It is characterized in that the primary optic axis at least one display unit is misaligned with the second optical axis, and the primary optic axis with
The misaligned display unit of second optical axis further includes light axle adjuster, and the light axle adjuster is connected to projecting cell, is somebody's turn to do with adjusting
Primary optic axis is misaligned with the second optical axis.
12nd, system as described in Example 11, it is characterised in that the light axle adjuster adjusts corresponding according to side-play amount
Primary optic axis, the side-play amount is according to the splicing height of the primary optic axis and the misaligned display unit of the second optical axis and viewing
Distance is calculated with viewing height.
13rd, the system as described in any of the above embodiment, it is characterised in that the splicing is highly POS1, the viewing distance is
D1, viewing height is H1, and camera lens is FL1 with screen optical path length, and the side-play amount is OFS, then OFS=K × FL1 × (POS1-
H1) ÷ D1 wherein K are constant, K=0.5~1.5.
14th, the system as described in any of the above embodiment, it is characterised in that：
Respectively the projecting cell is included：
Optical lens, with the primary optic axis, and
Projector's stamen, there is provided the projected picture；And
The light axle adjuster carries corresponding optical lens, and is configured at corresponding optical lens with corresponding throwing
Between shadow machine stamen, to adjust the relative position of corresponding optical lens and projector's stamen.
15th, the system as described in any of the above embodiment, it is characterised in that projector's stamen includes digital micromirror display
(DMD) chip, LCD display chips or LCOS display chips.
16th, the system as described in any of the above embodiment, it is characterised in that：
At least one display unit further includes projected position adjuster, and respectively the projected position adjuster carries corresponding being somebody's turn to do
Projecting cell, and the respectively projecting cell to translate or elevating movement adjusts the respectively projected picture respectively, is made the respectively throwing respectively
Shadow picture covers the respectively screen unit.
17th, a kind of method of adjustment for optical projection system, the display unit of optical projection system at least two respectively should
Display unit includes projecting cell, and it has primary optic axis and provides projected picture, and screen unit, and it corresponds to the projection
Unit and with the second optical axis, the projected picture is projected on the screen unit, and the method includes：
The primary optic axis at least one display unit is adjusted, makes it misaligned with the second corresponding optical axis.
18th, method as described in Example 17, further includes：
According to the splicing height of the primary optic axis and the misaligned display unit of the second optical axis and viewing distance and viewing
Highly calculate a side-play amount；And
Corresponding primary optic axis is adjusted according to the side-play amount, makes primary optic axis misaligned with the second corresponding optical axis.
19th, the system as described in any of the above embodiment, it is characterised in that the splicing is highly POS1, the viewing distance is
D1, viewing height is H1, and camera lens is FL1 with screen optical path length, and the side-play amount is OFS, then OFS=K × FL1 × (POS1-
H1) ÷ D1, wherein K are constant, K=0.5~1.5.
20th, the method as described in any of the above embodiment, it is characterised in that at least one screen unit further includes optics group
Part, and the method further includes：
The optical module is cut in the way of the asymmetric center of circle.
21st, the method as described in any of the above embodiment, it is characterised in that the optical module is the splicing according to where it
Position is cut.
22nd, the method as described in any of the above embodiment, it is characterised in that at least one display unit further includes projection position
Adjuster is put, the projected position adjuster carries the corresponding projecting cell, and the method is further included：
With the projected position adjuster make the projecting cell to translate or elevating movement adjusts the projected picture, make the throwing
Shadow picture covers the respectively screen unit.
In sum, the present invention provides a kind of back projection splicing wall system, and beholder is when the image of combination is watched
Visual angle can cause the decay of brightness, for example not enough for beholder in the brightness near the edge zone of combination,
On edge zone particularly in vertical direction, back projection splicing wall system of the present invention includes plural optical display unit, its
Corresponding optical display unit can suitably be adjusted according to the difference at the visual angle of beholder to each optical display unit
Optical axis, so that the image strip for projecting beholder is deflected toward the direction of beholder, and can improve the image of combination in entirety
Upper uniformity simultaneously strengthens display parameters, for example, increase the parameters such as brightness, chroma, the contrast at edge.Therefore it has novelty really
With progressive.
Even if therefore this case by above-mentioned embodiment describe in detail and can by those skilled in the art appoint apply craftsman think and
Modified as all, so neither taken off as claims are intended to Protector.
Claims (22)
1. a kind of optical projection system, including：
At least two display units, each display unit includes：
Projecting cell, with primary optic axis, and provides projected picture；And
Screen unit, corresponding to the projecting cell, and with the second optical axis, the projected picture is projected on the screen list
Unit,
It is characterized in that the primary optic axis at least one display unit is misaligned with the second optical axis.
2. the system as claimed in claim 1, it is characterised in that the optical projection system is back projection splicing wall system.
3. the system as claimed in claim 1, it is characterised in that the primary optic axis display unit misaligned with the second optical axis is also wrapped
Include：
Light axle adjuster, is connected to projecting cell, misaligned with the second optical axis to adjust the primary optic axis.
4. system as claimed in claim 3, it is characterised in that the smooth axle adjuster adjusts corresponding according to side-play amount
One optical axis, the side-play amount is according to the splicing height of the primary optic axis and the misaligned display unit of the second optical axis and sight
Distance and viewing height is seen to calculate.
5. system as claimed in claim 4, it is characterised in that the splicing is highly POS1, the viewing distance is D1, is seen
Height is seen for H1, camera lens is FL1 with screen optical path length, the side-play amount is OFS, then OFS=K × FL1 × (POS1-H1) ÷
D1, wherein K are constant, K=0.5~1.5.
6. system as claimed in claim 3, it is characterised in that each projecting cell includes：
Optical lens, with the primary optic axis；And
Projector's stamen, there is provided the projected picture；And
The smooth axle adjuster carries corresponding optical lens, and is configured at corresponding optical lens with corresponding projection
Between machine stamen, to adjust the relative position of corresponding optical lens and projector's stamen.
7. system as claimed in claim 6, it is characterised in that projector's stamen include digital micromirror display dmd chip,
LCD display chips or LCOS display chips.
8. the system as claimed in claim 1, it is characterised in that
At least one display unit also includes projected position adjuster, and the projected position adjuster carries corresponding projection list
Unit, and the projecting cell translation or elevating movement is adjusted the projected picture, the projected picture is covered the screen
Curtain unit.
9. the system as claimed in claim 1, it is characterised in that
Each screen unit includes optical module, and each optical module has corresponding second optical axis, and at least
One optical module is cut and is formed in the way of the asymmetric center of circle.
10. system as claimed in claim 9, it is characterised in that
Each optical module is cut according to the stitching position where it.
A kind of 11. back projection splicing wall systems, comprising：
At least two display units, each display unit includes：
Projecting cell, with primary optic axis, and provides projected picture；And
Screen unit, corresponding to the projecting cell, and with the second optical axis, the projected picture is projected on the screen list
Unit；
Primary optic axis in wherein at least one display unit is misaligned with the second optical axis, and primary optic axis is not weighed with the second optical axis
The display unit of conjunction also includes light axle adjuster, and the smooth axle adjuster is connected to projecting cell, to adjust the primary optic axis
It is misaligned with the second optical axis.
12. systems as claimed in claim 11, it is characterised in that the smooth axle adjuster adjusts corresponding according to side-play amount
Primary optic axis, the side-play amount be according to the primary optic axis and the misaligned display unit of the second optical axis splicing height and
Viewing distance is calculated with viewing height.
13. systems as claimed in claim 12, it is characterised in that the splicing is highly POS1, the viewing distance is D1,
Viewing height is H1, and camera lens is FL1 with screen optical path length, and the side-play amount is OFS, then OFS=K × FL1 × (POS1-H1)
÷ D1, wherein K are constant, K=0.5~1.5.
14. systems as claimed in claim 11, it is characterised in that each projecting cell includes：
Optical lens, with the primary optic axis；And
Projector's stamen, there is provided the projected picture；And
The smooth axle adjuster carries corresponding optical lens, and is configured at corresponding optical lens with corresponding projection
Between machine stamen, to adjust the relative position of corresponding optical lens and projector's stamen.
15. systems as claimed in claim 14, it is characterised in that projector's stamen include digital micromirror display dmd chip,
LCD display chips or LCOS display chips.
16. systems as claimed in claim 11, it is characterised in that
At least one display unit also includes projected position adjuster, and each projected position adjuster carries corresponding described
Projecting cell, and each projecting cell is translated or elevating movement adjusts each projected picture respectively respectively, make each
The projected picture covers each screen unit.
A kind of 17. methods of adjustment for optical projection system, the optical projection system includes at least two display units, respectively
The display unit includes projecting cell, and it has primary optic axis and provides projected picture, and screen unit, and it corresponds to institute
State projecting cell and with the second optical axis, the projected picture is projected on the screen unit, and methods described includes：
The primary optic axis at least one display unit is adjusted, makes it misaligned with the second corresponding optical axis.
18. methods as claimed in claim 17, also include：
Splicing height and viewing distance according to primary optic axis and the misaligned display unit of the second optical axis come with viewing height
Calculate side-play amount；And
Corresponding primary optic axis is adjusted according to the side-play amount, makes primary optic axis misaligned with the second corresponding optical axis.
19. systems as claimed in claim 18, it is characterised in that the splicing is highly POS1, the viewing distance is D1,
Viewing height is H1, and camera lens is FL1 with screen optical path length, and the side-play amount is OFS, then OFS=K × FL1 × (POS1-H1) ÷
D1, wherein K are constant, K=0.5~1.5.
20. methods as claimed in claim 17, it is characterised in that at least one screen unit also includes optical module, and institute
Stating method also includes：
The optical module is cut in the way of the asymmetric center of circle.
21. methods as claimed in claim 20, it is characterised in that the optical module be stitching position according to where it come
Cutting.
22. methods as claimed in claim 17, it is characterised in that at least one display unit is also adjusted including projected position
Device, the projected position adjuster carries the corresponding projecting cell, and methods described also includes：
With the projected position adjuster make the projecting cell to translate or elevating movement adjusts the projected picture, make institute
State projected picture and cover each screen unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710164581.6A CN106898265A (en) | 2017-03-20 | 2017-03-20 | The system and its method of adjustment of rear projection splicing wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710164581.6A CN106898265A (en) | 2017-03-20 | 2017-03-20 | The system and its method of adjustment of rear projection splicing wall |
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| Publication Number | Publication Date |
|---|---|
| CN106898265A true CN106898265A (en) | 2017-06-27 |
Family
ID=59192942
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710164581.6A Withdrawn CN106898265A (en) | 2017-03-20 | 2017-03-20 | The system and its method of adjustment of rear projection splicing wall |
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Cited By (1)
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| CN108801198A (en) * | 2018-04-18 | 2018-11-13 | 威创集团股份有限公司 | A kind of device and detection method of display big-wall flatness detection |
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| CN201233496Y (en) * | 2008-07-29 | 2009-05-06 | 北京环宇蓝博科技有限公司 | Front maintaining back projection splicing wall |
| CN101702295A (en) * | 2009-10-23 | 2010-05-05 | 广东威创视讯科技股份有限公司 | Rear projection splicing wall |
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| US6483643B1 (en) * | 1999-04-08 | 2002-11-19 | Larry Zuchowski | Controlled gain projection screen |
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| CN201233496Y (en) * | 2008-07-29 | 2009-05-06 | 北京环宇蓝博科技有限公司 | Front maintaining back projection splicing wall |
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Application publication date: 20170627 |
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