CN105657388A - Method for adjusting position of back projector and back projector - Google Patents

Method for adjusting position of back projector and back projector Download PDF

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Publication number
CN105657388A
CN105657388A CN201511031825.0A CN201511031825A CN105657388A CN 105657388 A CN105657388 A CN 105657388A CN 201511031825 A CN201511031825 A CN 201511031825A CN 105657388 A CN105657388 A CN 105657388A
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China
Prior art keywords
optical center
prediction picture
screen
speckle
round speckle
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Pending
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CN201511031825.0A
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Chinese (zh)
Inventor
罗振华
梁明浩
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Vtron Technologies Ltd
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Vtron Technologies Ltd
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Application filed by Vtron Technologies Ltd filed Critical Vtron Technologies Ltd
Priority to CN201511031825.0A priority Critical patent/CN105657388A/en
Publication of CN105657388A publication Critical patent/CN105657388A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/12Picture reproducers
    • H04N9/31Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3179Video signal processing therefor
    • H04N9/3188Scale or resolution adjustment
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/12Picture reproducers
    • H04N9/31Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3179Video signal processing therefor
    • H04N9/3185Geometric adjustment, e.g. keystone or convergence

Abstract

The embodiment of the invention discloses a method for adjusting the position of a back projector and the back projector. The method is used for solving the technical problem that in an actual fine tuning process of an existing corner image, when a certain corner or edge is smaller (or larger), whether the situation is caused by projector inclination or lens distortion is difficult to be judged. The method for adjusting the position of the back projector disclosed by the embodiment of the invention comprises the following steps: projecting a preset image provided with at least one circular ring at the center to a screen; obtaining a preset image reflected by the screen, projecting a dollar spot corresponding to the circular ring by the screen; and adjusting according to the dollar spot and the lens center per se to make the dollar spot overlap with the lens center.

Description

Back reflection projector carries out method and the back reflection projector of position adjustment
Technical field
The present invention relates to Display Technique field, particularly relate to a kind of back reflection projector and carry out method and the back reflection projector of position adjustment.
Background technology
Back projection splicing display wall be one be applied in professional field, to display the exigent projection display applications of image quality, multi-screen image can be stitched together, it is achieved the image of jumbotron ultrahigh resolution shows. Current back projection splicing Display Technique may generally be several as follows: unit spliced, whole curtain image mosaic and soft-sided anastomosing and splicing etc., wherein unit spliced technology has the advantages such as technology maturation, technique are simple, easy for installation, is widely used.
Unit spliced system adopts multiple separate unit processions to be spliced into big system, show realizing image mosaic complete, ultrahigh resolution, if but the dislocation of each unit image mosaic, image integrity will be largely effected on, reduce viewing effect, therefore between each unit, image need to carry out image docking adjustment. The picture position adjustment of present back projection unit is typically all the test figure such as employing Fig. 1 to Fig. 3 and assists, respectively through the six-axial adjustment frame adjusting fixing support projection machine, realize picture up and down, left and right, size, rotation, horizontal trapezoidal correction and vertical trapezium correct and adjust, and by adjusting mirror deformation, carry out the fine setting of corner image. In actual adjustment process, when certain angle or certain limit (or bigger than normal) less than normal, often be difficult to judgement be due to scialyscope tilt or lens distortion is caused, ununified, recognition methods easily, different personnel have different adjustment mode, particularly experience not to be the personnel enriched especially, trapezoidal correction adjustment often should be adopted to tilt, and mistake have employed the mode adjusting mirror deformation and adjusts, cause being greatly increased the adjustment time, and Adjustment effect is bad.
The above-mentioned six-axial adjustment frame owing to passing through to adjust fixing support projection machine mentioned, realize picture up and down, left and right, size, rotation, horizontal trapezoidal correction and vertical trapezium correct and adjust, and by adjusting mirror deformation, carry out in the real process of fine setting of corner image, cause when certain angle or certain limit (or bigger than normal) less than normal, it tends to be difficult to judgement is to tilt due to scialyscope or the technical problem that causes of lens distortion becomes the technical problem that those skilled in the art are urgently to be resolved hurrily.
Summary of the invention
A kind of back reflection projector that the embodiment of the present invention provides carries out method and the back reflection projector of position adjustment, solve in the real process of fine setting of current corner image, cause when certain angle or certain limit (or bigger than normal) less than normal, it tends to be difficult to judgement is owing to scialyscope tilts or the technical problem that causes of lens distortion.
The method that a kind of back reflection projector that the embodiment of the present invention provides carries out position adjustment, including:
The prediction picture being provided centrally with at least one annulus is projected to screen;
Get the described prediction picture returned by described screen reflection, and screen projects a round speckle corresponding with described annulus;
It is adjusted to described round speckle overlapping with described optical center with the optical center of self according to described round speckle.
Preferably, it is adjusted with the optical center of self to described round speckle overlapping with described optical center specifically including according to described round speckle:
Judge the position relationship of described round speckle and described optical center, if described round speckle overlaps with described optical center, then determine that scialyscope and picture are absent from, if described round speckle is misaligned with described optical center, then carries out the process of horizontal and vertical trapezoidal correction and overlap with described optical center to described round speckle.
Preferably, carry out horizontal and vertical trapezoidal correction to process to described round speckle and overlap with described optical center and specifically include:
Carry out horizontal and vertical trapezoidal correction process so that the position adjustment of described prediction picture to described round speckle overlaps with described optical center.
Preferably, horizontal and vertical trapezoidal correction process is carried out so that the position adjustment of described prediction picture also includes after overlapping to described round speckle with described optical center:
Adjust described prediction picture to overlap with the size of described screen, position.
Preferably, the position extremely described round speckle adjusting described prediction picture also includes after overlapping with described optical center:
Adjust described prediction picture to overlap with the size of described screen, position.
Preferably, adjust described prediction picture to overlap with the size of described screen, position and specifically include:
Adjust described prediction picture and rotate process;
Adjust overlying relation and/or the right position relation of described prediction picture;
Adjust the size of described prediction picture, overlap with the size of described screen, position to described prediction picture.
A kind of back reflection projector that the embodiment of the present invention provides, including:
Image projection unit, for projecting the prediction picture being provided centrally with at least one annulus to screen;
Acquiring unit, for getting the described prediction picture returned by described screen reflection, and screen projects a round speckle corresponding with described annulus;
Adjustment unit, for being adjusted to described round speckle overlapping with described optical center with the optical center of self according to described round speckle.
Preferably, adjustment unit specifically includes:
Judgment sub-unit, for judging the position relationship of described round speckle and described optical center, if described round speckle overlaps with described optical center, it is determined that scialyscope and picture are absent from, if described round speckle is misaligned with described optical center, then triggers and adjusts subelement;
Described adjustment subelement, is used for carrying out the process of horizontal and vertical trapezoidal correction and overlaps with described optical center to described round speckle.
Preferably, adjust subelement to specifically include:
Adjusting module, is used for carrying out horizontal and vertical trapezoidal correction process so that the position adjustment of described prediction picture to described round speckle overlaps with described optical center.
Preferably, adjust subelement also to include:
Fine setting module, overlaps with the size of described screen, position for adjusting described prediction picture.
Preferably, fine setting module specifically includes:
First adjusts submodule, is used for adjusting described prediction picture and rotates process;
Second adjusts submodule, for adjusting overlying relation and/or the right position relation of described prediction picture;
3rd adjusts submodule, for adjusting the size of described prediction picture, overlaps to described prediction picture with the size of described screen, position.
As can be seen from the above technical solutions, the embodiment of the present invention has the advantage that
A kind of back reflection projector that the embodiment of the present invention provides carries out method and the back reflection projector of position adjustment, and wherein, back reflection projector carries out the method for position adjustment and includes: project the prediction picture being provided centrally with at least one annulus to screen; Get the prediction picture returned by screen reflection, and screen projects a round speckle corresponding with annulus; It is adjusted to circle speckle overlapping with optical center with the optical center of self according to circle speckle. In the present embodiment, by adopting the prediction picture being provided centrally with at least one annulus to project to screen, then the prediction picture returned by screen reflection is got, and screen projects a round speckle corresponding with annulus, it is adjusted to circle speckle overlapping with optical center with the optical center of self finally according to circle speckle, solve in the real process of fine setting of current corner image, cause when certain angle or certain limit (or bigger than normal) less than normal, it tends to be difficult to judgement is owing to scialyscope tilts or the technical problem that causes of lens distortion.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 to Fig. 3 is the test image schematic diagram of prior art;
Fig. 4 carries out the schematic flow sheet of an embodiment of the method for position adjustment for a kind of back reflection projector that the embodiment of the present invention provides;
Fig. 5 carries out the schematic flow sheet of another embodiment of the method for position adjustment for a kind of back reflection projector that the embodiment of the present invention provides;
The structural representation of one embodiment of a kind of back reflection projector that Fig. 6 provides for the embodiment of the present invention;
The structural representation of another embodiment of a kind of back reflection projector that Fig. 7 provides for the embodiment of the present invention;
The prediction picture schematic diagram of a kind of back reflection projector that Fig. 8 provides for the embodiment of the present invention;
Fig. 9 is projection theory schematic diagram.
Detailed description of the invention
A kind of back reflection projector that the embodiment of the present invention provides carries out method and the back reflection projector of position adjustment, solve in the real process of fine setting of current corner image, cause when certain angle or certain limit (or bigger than normal) less than normal, it tends to be difficult to judgement is owing to scialyscope tilts or the technical problem that causes of lens distortion.
For making the goal of the invention of the present invention, feature, the advantage can be more obvious and understandable, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, the embodiments described below are only a part of embodiment of the present invention, and not all embodiment. Based on the embodiment in the present invention, all other embodiments that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
Referring to Fig. 4, an embodiment of the method that a kind of back reflection projector that the embodiment of the present invention provides carries out position adjustment includes:
401, the prediction picture being provided centrally with at least one annulus is projected to screen;
In the present embodiment, when it needs to be determined that the position of projection picture of scialyscope so that image shows correctly, it is necessary first to project the prediction picture being provided centrally with at least one annulus to screen.
402, get the prediction picture returned by screen reflection, and screen projects a round speckle corresponding with annulus;
When the prediction picture being provided centrally with at least one annulus is projected to after screen, it is necessary to get the prediction picture returned by screen reflection, and screen projects a round speckle corresponding with annulus.
403, it is adjusted to circle speckle overlapping with optical center with the optical center of self according to circle speckle.
When getting the prediction picture returned by screen reflection, and after screen projects a round speckle corresponding with annulus, it is necessary to be adjusted with the optical center of self to justifying speckle overlapping with optical center according to circle speckle.
In the present embodiment, by adopting the prediction picture being provided centrally with at least one annulus to project to screen, then the prediction picture returned by screen reflection is got, and screen projects a round speckle corresponding with annulus, it is adjusted to circle speckle overlapping with optical center with the optical center of self finally according to circle speckle, solve in the real process of fine setting of current corner image, cause when certain angle or certain limit (or bigger than normal) less than normal, it tends to be difficult to judgement is owing to scialyscope tilts or the technical problem that causes of lens distortion.
The above is that the process to the method that back reflection projector carries out position adjustment is described in detail, to be adjusted to the detailed process that circle speckle overlaps with optical center being described in detail with the optical center of self to according to circle speckle below, referring to Fig. 5, another embodiment of the method that a kind of back reflection projector that the embodiment of the present invention provides carries out position adjustment includes:
501, the prediction picture being provided centrally with at least one annulus is projected to screen;
In the present embodiment, when it needs to be determined that the position of projection picture of scialyscope so that image shows correctly, it is necessary first to project the prediction picture being provided centrally with at least one annulus to screen.
It should be noted that prediction picture can be as shown in Figure 8.
502, get the prediction picture returned by screen reflection, and screen projects a round speckle corresponding with annulus;
When the prediction picture being provided centrally with at least one annulus is projected to after screen, it is necessary to get the prediction picture returned by screen reflection, and screen projects a round speckle corresponding with annulus.
503, judge the position relationship of circle speckle and optical center, if circle speckle overlaps with optical center, it is determined that scialyscope and picture are absent from, if circle speckle is misaligned with optical center, then perform step 504;
When getting the prediction picture returned by screen reflection, and after screen projects a round speckle corresponding with annulus, need the position relationship judging circle speckle with optical center, if circle speckle overlaps with optical center, then determine that scialyscope and picture are absent from, if circle speckle is misaligned with optical center, then perform step 504.
504, horizontal and vertical trapezoidal correction process is carried out so that the position adjustment of prediction picture overlaps to circle speckle with optical center;
When judging that circle speckle and the position relationship of optical center are misaligned with optical center as circle speckle, then need to carry out horizontal and vertical trapezoidal correction process so that the position adjustment of prediction picture overlaps to circle speckle with optical center.
505, adjust prediction picture and rotate process;
When carrying out horizontal and vertical trapezoidal correction process, after position adjustment to the circle speckle making prediction picture overlaps with optical center, need to adjust prediction picture to overlap with the size of screen, position, overlap with the size of screen, position and to be described in detail adjusting prediction picture below, it is necessary first to adjustment prediction picture rotates process.
506, overlying relation and/or the right position relation of prediction picture are adjusted;
After adjusting prediction picture and rotating process, it is necessary to adjust overlying relation and/or the right position relation of prediction picture.
507, the size of prediction picture is adjusted.
After the overlying relation adjusting prediction picture and/or right position relation, it is necessary to adjust the size of prediction picture.
It should be noted that, as shown in Figure 9, there is one or more white annulus being the center of circle with pattern center at scialyscope pre-fabricated patterns center, this annulus projects to screen, is reflected back scialyscope through screen inner surface, can project a round speckle around projector lens, if this circle speckle is concentric with camera lens, then scialyscope and picture are absent from, if concentric, then can pass through level, vertical trapezium rectification adjusts to one heart.
Further, the central circular size of prediction picture, it is possible to be calculated according to projector lens relevant parameter, in order to obtain more suitably diameter, it is simple to accurately judge.
In the present embodiment, by adopting the prediction picture being provided centrally with at least one annulus to project to screen, then the prediction picture returned by screen reflection is got, and screen projects a round speckle corresponding with annulus, it is adjusted to circle speckle overlapping with optical center with the optical center of self finally according to circle speckle, solve in the real process of fine setting of current corner image, cause when certain angle or certain limit (or bigger than normal) less than normal, often it is difficult to judge owing to scialyscope tilts or the technical problem that lens distortion causes, and there is one or more white annulus being the center of circle with pattern center at center, this annulus projects to screen, it is reflected back scialyscope through screen inner surface, a round speckle can be projected around projector lens, if this circle speckle is concentric with camera lens, then scialyscope and picture are absent from, if it is not concentric, then can pass through level, vertical trapezium is corrected and is adjusted to one heart, by the test figure of this improvement, can accurately judge whether scialyscope and picture exist inclination, projection position can be adjusted rapidly by flow process.
Referring to Fig. 6, an embodiment of a kind of back reflection projector provided in the embodiment of the present invention includes:
Image projection unit 601, for projecting the prediction picture being provided centrally with at least one annulus to screen;
Acquiring unit 602, for getting the prediction picture returned by screen reflection, and screen projects a round speckle corresponding with annulus;
Adjustment unit 603, for being adjusted to circle speckle overlapping with optical center with the optical center of self according to circle speckle.
In the present embodiment, adopted the prediction picture being provided centrally with at least one annulus to project to screen by image projection unit 601, then acquiring unit 602 gets the prediction picture returned by screen reflection, and screen projects a round speckle corresponding with annulus, last adjustment unit 603 is adjusted to circle speckle overlapping with optical center with the optical center of self according to circle speckle, solve in the real process of fine setting of current corner image, cause when certain angle or certain limit (or bigger than normal) less than normal, often it is difficult to judge owing to scialyscope tilts or the technical problem that lens distortion causes.
The above is that each unit to back reflection projector is described in detail, and sub-unit, module, submodule is described in detail below, refers to Fig. 7, and another embodiment of a kind of back reflection projector provided in the embodiment of the present invention includes:
Image projection unit 701, for projecting the prediction picture being provided centrally with at least one annulus to screen;
Acquiring unit 702, for getting the prediction picture returned by screen reflection, and screen projects a round speckle corresponding with annulus;
Adjustment unit 703, for being adjusted to circle speckle overlapping with optical center with the optical center of self according to circle speckle.
Adjustment unit 703 specifically includes:
Judgment sub-unit 7031, for judging the position relationship of circle speckle and optical center, if circle speckle overlaps with optical center, it is determined that scialyscope and picture are absent from, if circle speckle is misaligned with optical center, then triggers adjusting subelement 7032;
Adjust subelement 7032, be used for carrying out the process of horizontal and vertical trapezoidal correction and overlap with optical center to circle speckle.
Adjust subelement 7032 to specifically include:
Adjusting module 7032a, is used for carrying out horizontal and vertical trapezoidal correction process so that the position adjustment of prediction picture overlaps to circle speckle with optical center.
Fine setting module 7032b, overlaps with the size of screen, position for adjusting prediction picture.
Fine setting module 7032b specifically includes:
First adjusts submodule 7032b1, is used for adjusting prediction picture and rotates process;
Second adjusts submodule 7032b2, for adjusting overlying relation and/or the right position relation of prediction picture;
3rd adjusts submodule 7032b3, for adjusting the size of prediction picture, overlaps to prediction picture with the size of screen, position.
In the present embodiment, adopted the prediction picture being provided centrally with at least one annulus to project to screen by image projection unit 701, then acquiring unit 702 gets the prediction picture returned by screen reflection, and screen projects a round speckle corresponding with annulus, last adjustment unit 703 is adjusted to circle speckle overlapping with optical center with the optical center of self according to circle speckle, solve in the real process of fine setting of current corner image, cause when certain angle or certain limit (or bigger than normal) less than normal, often it is difficult to judge owing to scialyscope tilts or the technical problem that lens distortion causes, and there is one or more white annulus being the center of circle with pattern center at center, this annulus projects to screen, it is reflected back scialyscope through screen inner surface, a round speckle can be projected around projector lens, if this circle speckle is concentric with camera lens, then scialyscope and picture are absent from, if it is not concentric, then can pass through level, vertical trapezium is corrected and is adjusted to one heart, by the test figure of this improvement, can accurately judge whether scialyscope and picture exist inclination, projection position can be adjusted rapidly by flow process.
It should be noted that the screen mentioned in the present embodiment is projection screen, specifically not limiting, method and device in the present embodiment can be specifically be applied to DLP back reflection projector herein.
Those skilled in the art is it can be understood that arrive, for convenience and simplicity of description, the system of foregoing description, the specific works process of device and unit, it is possible to reference to the corresponding process in preceding method embodiment, do not repeat them here.
In several embodiments provided herein, it should be understood that disclosed system, apparatus and method, it is possible to realize by another way.Such as, device embodiment described above is merely schematic, such as, the division of described unit, being only a kind of logic function to divide, actual can have other dividing mode when realizing, for instance multiple unit or assembly can in conjunction with or be desirably integrated into another system, or some features can ignore, or do not perform. Another point, shown or discussed coupling each other or direct-coupling or communication connection can be through INDIRECT COUPLING or the communication connection of some interfaces, device or unit, it is possible to be electrical, machinery or other form.
The described unit illustrated as separating component can be or may not be physically separate, and the parts shown as unit can be or may not be physical location, namely may be located at a place, or can also be distributed on multiple NE. Some or all of unit therein can be selected according to the actual needs to realize the purpose of the present embodiment scheme.
It addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it is also possible to be that unit is individually physically present, it is also possible to two or more unit are integrated in a unit. Above-mentioned integrated unit both can adopt the form of hardware to realize, it would however also be possible to employ the form of SFU software functional unit realizes.
If described integrated unit is using the form realization of SFU software functional unit and as independent production marketing or use, it is possible to be stored in a computer read/write memory medium. Based on such understanding, part or all or part of of this technical scheme that prior art is contributed by technical scheme substantially in other words can embody with the form of software product, this computer software product is stored in a storage medium, including some instructions with so that a computer equipment (can be personal computer, server, or the network equipment etc.) perform all or part of step of method described in each embodiment of the present invention. And aforesaid storage medium includes: USB flash disk, portable hard drive, read only memory (ROM, Read-OnlyMemory), the various media that can store program code such as random access memory (RAM, RandomAccessMemory), magnetic disc or CD.
The above, above example only in order to technical scheme to be described, is not intended to limit; Although the present invention being described in detail with reference to previous embodiment, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein portion of techniques feature is carried out equivalent replacement; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.

Claims (10)

1. the method that a back reflection projector carries out position adjustment, it is characterised in that including:
The prediction picture being provided centrally with at least one annulus is projected to screen;
Get the described prediction picture returned by described screen reflection, and screen projects a round speckle corresponding with described annulus;
It is adjusted to described round speckle overlapping with described optical center with the optical center of self according to described round speckle.
2. the method that back reflection projector according to claim 1 carries out position adjustment, it is characterised in that be adjusted with the optical center of self to described round speckle overlapping with described optical center specifically including according to described round speckle:
Judge the position relationship of described round speckle and described optical center, if described round speckle overlaps with described optical center, then determine that scialyscope and picture are absent from, if described round speckle is misaligned with described optical center, then carries out the process of horizontal and vertical trapezoidal correction and overlap with described optical center to described round speckle.
3. the method that back reflection projector according to claim 2 carries out position adjustment, it is characterised in that carry out horizontal and vertical trapezoidal correction and process to described round speckle and overlap with described optical center and specifically include:
Carry out horizontal and vertical trapezoidal correction process so that the position adjustment of described prediction picture to described round speckle overlaps with described optical center.
4. the method that back reflection projector according to claim 3 carries out position adjustment, it is characterised in that carry out horizontal and vertical trapezoidal correction process so that the position adjustment of described prediction picture also includes after overlapping to described round speckle with described optical center:
Adjust described prediction picture to overlap with the size of described screen, position.
5. the method that back reflection projector according to claim 4 carries out position adjustment, it is characterised in that adjust described prediction picture and overlap with the size of described screen, position and specifically include:
Adjust described prediction picture and rotate process;
Adjust overlying relation and/or the right position relation of described prediction picture;
Adjust the size of described prediction picture, overlap with the size of described screen, position to described prediction picture.
6. a back reflection projector, it is characterised in that including:
Image projection unit, for projecting the prediction picture being provided centrally with at least one annulus to screen;
Acquiring unit, for getting the described prediction picture returned by described screen reflection, and screen projects a round speckle corresponding with described annulus;
Adjustment unit, for being adjusted to described round speckle overlapping with described optical center with the optical center of self according to described round speckle.
7. back reflection projector according to claim 6, it is characterised in that adjustment unit specifically includes:
Judgment sub-unit, for judging the position relationship of described round speckle and described optical center, if described round speckle overlaps with described optical center, it is determined that scialyscope and picture are absent from, if described round speckle is misaligned with described optical center, then triggers and adjusts subelement;
Described adjustment subelement, is used for carrying out the process of horizontal and vertical trapezoidal correction and overlaps with described optical center to described round speckle.
8. back reflection projector according to claim 7, it is characterised in that adjust subelement and specifically include:
Adjusting module, is used for carrying out horizontal and vertical trapezoidal correction process so that the position adjustment of described prediction picture to described round speckle overlaps with described optical center.
9. back reflection projector according to claim 8, it is characterised in that adjust subelement and also include:
Fine setting module, overlaps with the size of described screen, position for adjusting described prediction picture.
10. back reflection projector according to claim 9, it is characterised in that fine setting module specifically includes:
First adjusts submodule, is used for adjusting described prediction picture and rotates process;
Second adjusts submodule, for adjusting overlying relation and/or the right position relation of described prediction picture;
3rd adjusts submodule, for adjusting the size of described prediction picture, overlaps to described prediction picture with the size of described screen, position.
CN201511031825.0A 2015-12-30 2015-12-30 Method for adjusting position of back projector and back projector Pending CN105657388A (en)

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CN106054392A (en) * 2016-08-10 2016-10-26 深圳多哚新技术有限责任公司 Alignment method of optical lens and display screen in VR equipment and system thereof
CN106444257A (en) * 2016-12-14 2017-02-22 海信集团有限公司 Method, device and system for adjusting light spots received by light valve
CN106595482A (en) * 2016-12-14 2017-04-26 海信集团有限公司 Light spot measurement method of laser projection system and apparatus thereof
CN106803946A (en) * 2017-01-26 2017-06-06 苏州佳世达电通有限公司 A kind of picture alignment method and system for projection picture of projector test
CN109142380A (en) * 2018-09-19 2019-01-04 广州视源电子科技股份有限公司 The fault detection method of circuit board, device and system
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CN111679541A (en) * 2020-07-16 2020-09-18 歌尔光学科技有限公司 Calibration control method and system for projection module, storage medium and control device
CN113766218A (en) * 2021-09-14 2021-12-07 北京集创北方科技股份有限公司 Position detection method for optical lens, electronic device, and storage medium

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