CN116112648A - Installation optimization adjustment method and device for projector display assembly - Google Patents
Installation optimization adjustment method and device for projector display assembly Download PDFInfo
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- CN116112648A CN116112648A CN202310073748.3A CN202310073748A CN116112648A CN 116112648 A CN116112648 A CN 116112648A CN 202310073748 A CN202310073748 A CN 202310073748A CN 116112648 A CN116112648 A CN 116112648A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
Abstract
The invention relates to the technical field of optics, in particular to a projector display component installation optimization adjustment method and device; step S1, respectively clamping three liquid crystal plates on a moving surface of a six-axis platform, and moving the six-axis platform to move the liquid crystal plates to positions to be adjusted; step S2, turning on a projector light source, driving a liquid crystal panel to project a picture, and primarily adjusting the projected picture according to the picture capturing range of a camera; step S3, the projection pictures of the second liquid crystal plate and the third liquid crystal plate are offset in different directions, and the camera acquires an adjustment picture; and S4, calculating the data of the adjustment picture through an external adjustment platform, and adjusting three liquid crystal panels simultaneously.
Description
Technical Field
The present invention relates to the field of optical technologies, and in particular, to a method and an apparatus for adjusting a projector.
Background
There are 3 liquid crystal panels (LCDs) in the projector, corresponding to R, G, B frames respectively, and currently, the installation of the projector requires adjustment of 6 degrees of freedom of each LCD to ensure that frames generated by each LCD can be overlapped with pixel level precision, thereby ensuring the frame effect of final projection presentation of the product.
The existing adjusting method is to adjust after the black-and-white image acquisition unit recognizes the picture, so that the R, G, B three LCDs are needed to be adjusted in sequence, the adjusting time is long, and the production efficiency is affected; with the improvement of the resolution of the projector, the corresponding adjustment precision requirement is further improved, if the color image acquisition unit is adopted for adjustment, the adjustment precision is lower than that of the black-and-white image acquisition unit although three LCD can be adjusted at the same time due to the interference among images, and the adjustment precision is not suitable for the adjustment of a new 4K-level high-resolution projector.
Disclosure of Invention
The invention aims to provide an installation optimization adjustment method for a projector display assembly, which solves the technical problems;
the invention also aims to provide an installation optimization adjusting device for the projector display assembly, which solves the technical problems.
The technical problems solved by the invention can be realized by adopting the following technical scheme:
a projector display assembly installation optimization adjustment method includes,
step S1, a first liquid crystal plate, a second liquid crystal plate and a third liquid crystal plate are respectively clamped on the moving surface of a six-axis platform, and the six-axis platform is moved through an additional axis to move the first liquid crystal plate, the second liquid crystal plate and the third liquid crystal plate to the positions to be adjusted;
step S2, adjusting the position of a projector light source, turning on the projector light source, driving the first liquid crystal plate, the second liquid crystal plate and the third liquid crystal plate to project pictures to a projection screen, and primarily adjusting the projection pictures according to the picture capturing range of a camera;
step S3, performing bias on a projection picture of a second liquid crystal panel in a first direction and performing bias on a projection picture of a third liquid crystal panel in a second direction, wherein the camera acquires adjustment pictures of the first liquid crystal panel, the second liquid crystal panel and the third liquid crystal panel;
and S4, calculating the data of the adjustment picture through an external adjustment platform, adjusting the first liquid crystal plate, the second liquid crystal plate and the third liquid crystal plate at the same time, and determining the adjustment positions of the first liquid crystal plate, the second liquid crystal plate and the third liquid crystal plate after obtaining the target picture.
Preferably, step S2 comprises,
step S21, adjusting the center reticle of the camera to the center position of the projection picture of the first liquid crystal plate based on the projection picture of the first liquid crystal plate;
step S22, closing the projection picture of the first liquid crystal panel, projecting the projection picture of the second liquid crystal panel, and adjusting the center cross line of the projection picture of the second liquid crystal panel to the center position of the camera;
and S23, closing the projection picture of the second liquid crystal plate, projecting the projection picture of the third liquid crystal plate, and adjusting the center cross line of the projection picture of the third liquid crystal plate to the center position of the camera.
Preferably, in step S3, the adjustment screen acquired by the camera includes a center reticle of projection screens of the first liquid crystal panel, the second liquid crystal panel, and the third liquid crystal panel, which are sequentially arranged.
Preferably, in step S3, the first direction and the second direction are opposite, and the offset of the projection screen of the second liquid crystal panel in the first direction and the offset of the projection screen of the third liquid crystal panel in the second direction each have a set pixel distance.
Preferably, the camera is a black-and-white image acquisition camera.
Preferably, the camera comprises a first camera positioned at the upper left of the projection screen, a second camera positioned at the lower left of the projection screen, a third camera positioned at the upper right of the projection screen, a fourth camera positioned at the lower right of the projection screen and a fifth camera positioned at the center of the projection screen.
Preferably, the method further comprises the steps of,
and S5, curing the first liquid crystal plate, the second liquid crystal plate and the third liquid crystal plate, fixing the first liquid crystal plate, the second liquid crystal plate and the third liquid crystal plate at the determined adjusting positions, loosening the six-axis platform, and taking down the adjusted display assembly.
An installation optimizing and adjusting device for a projector display screen assembly is used for implementing the installation optimizing and adjusting method for the projector display screen assembly, and comprises an optical platform, wherein the optical platform is provided with a plurality of optical sensors,
the first six-axis platform is used for clamping the first liquid crystal panel and is movably arranged on the optical platform through a first additional axis;
the second six-axis platform is used for clamping the second liquid crystal panel and is movably arranged on the optical platform through a second additional axis;
the third six-axis platform is used for clamping the third liquid crystal panel and can be movably arranged on the optical platform through a third additional axis;
the first projector light source is movably arranged on the optical platform through a fourth additional shaft;
the second projector light source is movably arranged on the optical platform through a fifth additional shaft, and a light splitting component is arranged on the first projector light source or the second projector light source;
the optical prism is arranged on the optical platform, and the first liquid crystal plate, the second liquid crystal plate and the third liquid crystal plate are respectively attached to the light combining surface of the optical prism.
Preferably, the first, second and third liquid crystal panels are coated with a curable fixing agent between the optical prisms.
Preferably, the first liquid crystal panel is a green liquid crystal panel, the second liquid crystal panel is a red liquid crystal panel, and the third liquid crystal panel is a blue liquid crystal panel.
The invention has the beneficial effects that: by adopting the technical scheme, the invention can ensure the adjustment precision of the projector, simultaneously reduce the problem of overlong adjustment time caused by three times of adjustment of the LCD by the original black-and-white image acquisition unit, and improve the efficiency in the production of the projector.
Drawings
FIG. 1 is a schematic diagram illustrating steps of an installation optimization adjustment method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an embodiment of the present invention;
FIG. 3 is a schematic diagram of a structure of an installation optimizing adjustment device according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating step S2 in the embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
The invention is further described below with reference to the drawings and specific examples, which are not intended to be limiting.
A projector display assembly installation optimization adjustment method, as shown in figures 1-4, comprises,
step S1, a first liquid crystal plate G, a second liquid crystal plate R and a third liquid crystal plate B are respectively clamped on a moving surface of a six-axis platform, and the first liquid crystal plate G, the second liquid crystal plate R and the third liquid crystal plate B are moved to positions to be adjusted by moving the six-axis platform through additional axes;
step S2, adjusting the position of a projector light source, turning on the projector light source, driving a first liquid crystal panel G, a second liquid crystal panel R and a third liquid crystal panel B to project pictures to a projection screen, and primarily adjusting the projected pictures according to the picture capturing range of a camera;
step S3, the projection picture of the second liquid crystal panel R is biased in the first direction, the projection picture of the third liquid crystal panel B is biased in the second direction, and the camera acquires adjustment pictures of the first liquid crystal panel G, the second liquid crystal panel R and the third liquid crystal panel B;
and S4, calculating the data of the adjustment picture through an external adjustment platform, adjusting the first liquid crystal panel G, the second liquid crystal panel R and the third liquid crystal panel B at the same time, and determining the adjustment positions of the first liquid crystal panel G, the second liquid crystal panel R and the third liquid crystal panel B after the target picture is obtained.
Specifically, the invention presets a computer program for adjusting the liquid crystal panel, and the software is used for carrying out preset offset on the pictures projected by the first liquid crystal panel G, the second liquid crystal panel R and the third liquid crystal panel B, which are 3 pieces of liquid crystal panels (LCDs), in the first direction and the second direction, so that different picture areas in the black-and-white image acquisition unit respectively obtain the adjustment pictures projected by R, G, B three pieces of LCDs, and the black-and-white image acquisition unit can be used for simultaneously adjusting the positions of the three LCD pieces.
After the position adjustment is completed, the software cancels the preset offset of the projected picture in the adjustment picture, and the picture carries out picture adjustment effect final confirmation in the central area of the image acquisition unit in a final imaging mode. The method provided by the invention can ensure the adjustment precision of the 4K-level projector, simultaneously reduce the problem of overlong adjustment time caused by three times of adjustment of the LCD of the original black-and-white image acquisition unit, and improve the efficiency in projector production.
Furthermore, the invention adopts six parallel shaft platforms to clamp LCD, because the LCD has R, G, B three, 3 six shaft platforms are adopted to clamp one LCD respectively; during the LCD adjustment process, because the LCD is near the correct mounting position in the light path. At the moment, a projector light source is lightened, an adjustment picture is input at a display signal input end through an HDMI interface, and a projector product to be adjusted can throw out the picture on a corresponding target curtain;
furthermore, the invention adopts 5 2000 ten thousand pixel black-and-white industrial cameras to shoot a target curtain by matching with corresponding lenses, respectively collects 5 typical area adjustment pictures of the upper, lower, left, right and center, wherein the adjustment pictures are cross lines with the width of 1 pixel, and are just projected at the center position of the collection area. The size of each acquisition area is about 100 mm. At this time, the positions of the 6 degrees of freedom of the LCD are adjusted, and the relevant images have corresponding projection effect changes. According to the related changes, the corresponding picture is calculated through software, and the position to be adjusted can be calculated.
In this embodiment, when three LCDs need to be adjusted simultaneously, a preset offset is added to the images by a special projection image, the LCD image of R is offset to the upper right of the acquisition area, the LCD image of B is offset to the lower left of the acquisition area, and the LCD of G is still kept at the center of the acquisition area as an adjustment reference. Thereby realizing that the black-and-white camera collects the adjustment pictures of three colors at the same time. After the adjustment is completed, the software eliminates the preset offset added in the special picture, and finally confirms the adjustment effect, thereby realizing the aim of shortening the adjustment time.
Preferably, the invention can reduce more than half of the adjustment time by rationalizing the flow without increasing the cost. Corresponding to the existing production condition, the existing machine type yield originally needs 2 fixing machines for production, and after the optimization adjustment method is adopted, the production can be completed by only 1 fixing machine, so that 400 ten thousand yuan of the equipment investment RMB is saved.
In a preferred embodiment, as shown in fig. 4, step S2 includes,
step S21, based on the projection picture of the first liquid crystal panel G, adjusting the center cross line of the camera to the center position of the projection picture of the first liquid crystal panel G;
step S22, the projection picture of the first liquid crystal panel G is closed, the projection picture of the second liquid crystal panel R is projected, and the center cross line of the projection picture of the second liquid crystal panel R is adjusted to the center position of the camera;
in step S23, the projection screen of the second liquid crystal panel R is turned off, the projection screen of the third liquid crystal panel B is projected, and the center reticle of the projection screen of the third liquid crystal panel B is adjusted to the center position of the camera.
Specifically, before starting the adjustment, the light source used for adjusting the device and the reference of the 5-way camera distributed on the upper, lower, left, right and center of the screen need to be calibrated by a master fixture. After the adjustment is started, the R, G, B three LCDs are respectively clamped on the moving surfaces of the six-axis platform, and the LCDs are pushed into the positions to be adjusted through the additional axis movement of the platform. The flat cable for displaying images on the LCD is turned on. And opening the device adjusting process. The PC turns on the light source and drives the LCD panel to start projecting the picture, which is combined by the optical prism 64 and projected onto the curtain 66 through the lens 65.
Furthermore, the G preliminary adjustment picture is projected, and then the cross lines in the cameras are approximately adjusted to the center position. The G frame is closed, the R frame is projected, and the reticle is also adjusted to the center. And finally, closing the R picture, throwing out the B picture, and adjusting the cross line to the center. After the step is finished, the picture can be ensured to be basically positioned at the adjusting position, and all cameras can capture the adjusted cross in the picture range. And finishing the preliminary adjustment.
In a preferred embodiment, in step S3, the adjustment screen acquired by the camera includes a center reticle of the projection screen of the first liquid crystal panel G, the second liquid crystal panel R, and the third liquid crystal panel B, which are sequentially arranged.
In a preferred embodiment, in step S3, the directions of the first direction and the second direction are opposite, and the offset of the projection screen of the second liquid crystal panel R in the first direction and the offset of the projection screen of the third liquid crystal panel B in the second direction are both set with the set pixel distance.
Specifically, after the preliminary adjustment in step S2, the accurate adjustment in step S3 is performed, in this embodiment, the adjustment cross of R is offset by 20 pixels in the X, Y direction, and the adjustment cross of B is offset by 20 pixels in the X, Y direction by using a special adjustment screen. At this time, three cross images, B, G, R adjustment images, are sequentially arranged from the left bottom to the right top in the shooting range of the camera, and moving the corresponding LCD changes the state of the related adjustment cross image. After the PC collects 5 camera pictures, corresponding calculation is carried out, and corresponding movement data are sent to a corresponding adjustment platform, so that the step that three LCD measurement adjustment steps are simultaneously completed by a black-and-white image collection unit is realized.
Further, after the LCDs are respectively adjusted, the PC sends a final confirmation screen to the three LCDs, which cancels the preset offset, the adjustment crosses of all three colors should be overlapped at the center of the screen, the camera captures the screen to confirm the final adjustment position, after the screen confirmation is completed, the PC turns off the projection light source and the adjustment screen, displays the corresponding screen on the operation display to inform the operator, and the operator performs the UV coating curing operation.
In a preferred embodiment, the camera is a black and white image acquisition camera; specifically, along with the improvement of the resolution of the projector, the corresponding adjustment precision requirement is further improved, and compared with a color image acquisition unit, the image is identified by the black-and-white image acquisition unit to have higher adjustment precision.
In a preferred embodiment, the cameras include a first camera positioned at the top left of the projection screen, a second camera positioned at the bottom left of the projection screen, a third camera positioned at the top right of the projection screen, a fourth camera positioned at the bottom right of the projection screen, and a fifth camera positioned at the center of the projection screen.
In a preferred embodiment, the method further includes a step S5 of curing the first, second and third liquid crystal panels G, R and B, fixing the first, second and third liquid crystal panels G, R and B at the determined adjustment positions, releasing the six-axis platform, and removing the adjusted display assembly.
Specifically, after the LCD adjustment position is completed, the operator is required to fill the reserved position with the UV fixing agent and perform UV irradiation fixing.
An installation optimizing and adjusting device for a projector display assembly is used for implementing the installation optimizing and adjusting method for the projector display screen assembly in any embodiment, as shown in fig. 2 and 3, and comprises an optical platform 1, wherein the optical platform 1 is provided with,
a first six-axis platform 21 for clamping the first liquid crystal panel G, movably disposed on the optical platform 1 through a first additional axis 31;
a second six-axis platform 22 for clamping the second liquid crystal panel R, movably disposed on the optical platform 1 through a second additional axis 32;
a third six-axis platform 23 for clamping the third liquid crystal panel B and movably arranged on the optical platform 1 through a third additional axis 33;
a first projector light source 41 movably disposed on the optical platform 1 through a fourth additional shaft 34;
a second projector light source 42 movably disposed on the optical platform 1 through a fifth additional shaft 35, wherein a beam splitting component is disposed on the first projector light source 41 or the second projector light source 42;
an optical prism 64 is disposed on the optical platform 1, and the first liquid crystal panel G, the second liquid crystal panel R and the third liquid crystal panel B are respectively attached to the light combining surface of the optical prism 64.
Specifically, as shown in fig. 3, in this embodiment, two light sources, i.e., a first projector light source 41 and a second projector light source 42, are provided, wherein one of the two light sources emits blue light, the other emits yellow light, and a light splitting component is arranged on the light source emitting yellow light to split the yellow light into one green light and one red light;
further, in other embodiments, as shown in fig. 2, only one projector light source 61 may be provided, the one projector light source 61 is divided into three light channels by two continuous light splitting assemblies, the first light splitting assembly 62 splits the white light emitted by the projector light source 61 into one blue light and one yellow light, and the second light splitting assembly 63 further splits the yellow light into one green light and one red light.
In a preferred embodiment, the first, second and third liquid crystal panels G, R and B are coated with a curable fixing agent between the optical prisms 64; specifically, after the completion of the screen confirmation, the PC turns off the projection light source and the adjustment screen, displays the corresponding screen on the operation display to inform the operator, and the operator performs the UV coating curing operation. After the UV curing is completed, the operator releases the LCD flat cable, releases the LCD clamping fixture and pushes out the adjustment platform on the additional shaft. And taking down the projector image component to finish the operation of adjusting and fixing the product.
In a preferred embodiment, the first liquid crystal panel G is a green liquid crystal panel, the second liquid crystal panel R is a red liquid crystal panel, and the third liquid crystal panel B is a blue liquid crystal panel.
In summary, the method provided by the invention is adopted to perform LCD component installation positioning optimization, and the high precision of the black-and-white image acquisition unit and the high efficiency of the color image acquisition unit are effectively combined in the adjustment process through the matching of software and hardware, so that the production efficiency of the equipment is improved on the premise of not increasing the cost, the cost for manufacturing a large number of equipment is saved, and the method is a practical and effective improvement method in the production of high-precision projectors.
The foregoing description is only illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, and it will be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. A projector display assembly installation optimization adjustment method is characterized by comprising the following steps of,
step S1, a first liquid crystal plate, a second liquid crystal plate and a third liquid crystal plate are respectively clamped on the moving surface of a six-axis platform, and the six-axis platform is moved through an additional axis to move the first liquid crystal plate, the second liquid crystal plate and the third liquid crystal plate to the positions to be adjusted;
step S2, adjusting the position of a projector light source, turning on the projector light source, driving the first liquid crystal plate, the second liquid crystal plate and the third liquid crystal plate to project pictures to a projection screen, and primarily adjusting the projection pictures according to the picture capturing range of a camera;
step S3, performing bias on a projection picture of a second liquid crystal panel in a first direction and performing bias on a projection picture of a third liquid crystal panel in a second direction, wherein the camera acquires adjustment pictures of the first liquid crystal panel, the second liquid crystal panel and the third liquid crystal panel;
and S4, calculating the data of the adjustment picture through an external adjustment platform, adjusting the first liquid crystal plate, the second liquid crystal plate and the third liquid crystal plate at the same time, and determining the adjustment positions of the first liquid crystal plate, the second liquid crystal plate and the third liquid crystal plate after obtaining the target picture.
2. The projector display assembly installation optimisation method according to claim 1, wherein step S2 comprises,
step S21, adjusting the center reticle of the camera to the center position of the projection picture of the first liquid crystal plate based on the projection picture of the first liquid crystal plate;
step S22, closing the projection picture of the first liquid crystal panel, projecting the projection picture of the second liquid crystal panel, and adjusting the center cross line of the projection picture of the second liquid crystal panel to the center position of the camera;
and S23, closing the projection picture of the second liquid crystal plate, projecting the projection picture of the third liquid crystal plate, and adjusting the center cross line of the projection picture of the third liquid crystal plate to the center position of the camera.
3. The method according to claim 2, wherein in step S3, the adjustment screen acquired by the camera includes a center reticle of the projection screens of the first liquid crystal panel, the second liquid crystal panel, and the third liquid crystal panel that are sequentially arranged.
4. The method according to claim 1, wherein in step S3, the first direction and the second direction are opposite to each other, and the offset of the projection screen of the second liquid crystal panel in the first direction and the offset of the projection screen of the third liquid crystal panel in the second direction each have a set pixel distance.
5. The projector display assembly installation optimization adjustment method of claim 1, wherein the camera is a black and white image capture camera.
6. The projector display assembly installation optimisation adjustment method according to claim 1, wherein the cameras comprise a first camera located at the upper left of the projection screen, a second camera located at the lower left of the projection screen, a third camera located at the upper right of the projection screen, a fourth camera located at the lower right of the projection screen and a fifth camera located at the center of the projection screen.
7. The projector display assembly installation optimisation adjustment method according to claim 1, further comprising,
and S5, curing the first liquid crystal plate, the second liquid crystal plate and the third liquid crystal plate, fixing the first liquid crystal plate, the second liquid crystal plate and the third liquid crystal plate at the determined adjusting positions, loosening the six-axis platform, and taking down the adjusted display assembly.
8. An installation optimizing adjustment device for a projector display assembly, for implementing the installation optimizing adjustment method for a projector display screen assembly according to any one of claims 1 to 7, characterized by comprising an optical platform provided thereon,
the first six-axis platform is used for clamping the first liquid crystal panel and is movably arranged on the optical platform through a first additional axis;
the second six-axis platform is used for clamping the second liquid crystal panel and is movably arranged on the optical platform through a second additional axis;
the third six-axis platform is used for clamping the third liquid crystal panel and can be movably arranged on the optical platform through a third additional axis;
the first projector light source is movably arranged on the optical platform through a fourth additional shaft;
the second projector light source is movably arranged on the optical platform through a fifth additional shaft, and a light splitting component is arranged on the first projector light source or the second projector light source;
the optical prism is arranged on the optical platform, and the first liquid crystal plate, the second liquid crystal plate and the third liquid crystal plate are respectively attached to the light combining surface of the optical prism.
9. The projector display assembly installation optimisation adjustment apparatus according to claim 8, wherein the first, second and third liquid crystal panels are coated with a curable fixing agent between the optical prisms.
10. The apparatus of claim 8, wherein the first liquid crystal panel is a green liquid crystal panel, the second liquid crystal panel is a red liquid crystal panel, and the third liquid crystal panel is a blue liquid crystal panel.
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