CN106647130B - back projection splicing unit, system and back projection splicing unit adjusting method - Google Patents
back projection splicing unit, system and back projection splicing unit adjusting method Download PDFInfo
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- CN106647130B CN106647130B CN201710130660.5A CN201710130660A CN106647130B CN 106647130 B CN106647130 B CN 106647130B CN 201710130660 A CN201710130660 A CN 201710130660A CN 106647130 B CN106647130 B CN 106647130B
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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
- G03B21/28—Reflectors in projection beam
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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
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Abstract
本发明公开了一种背投影拼接单元、系统及背投影拼接单元调节方法，属于显示技术领域。背投影拼接单元包括：拼接箱体，拼接箱体的一个表面上设置有屏幕单元，拼接箱体内与屏幕单元相对的位置设置有投影机，投影机与屏幕单元之间设置有反射组件；投影机投射出的光束中的第一光束射入屏幕单元，光束中超出屏幕单元的显示范围的第二光束经反射组件反射射入拼接缝内，并沿拼接缝的缝隙传播，拼接缝是由拼接箱体与相邻的拼接箱体拼接所产生的。本发明中，人眼可以从拼接缝中观看到图像，从而消除拼接缝对图像造成的割裂感，既提高了图像的显示效果，也降低了实现背投影拼接单元的复杂性，还保证了图像的色彩和亮度的连续性。
The invention discloses a rear projection splicing unit, a system and a method for adjusting the rear projection splicing unit, belonging to the field of display technology. The rear projection splicing unit includes: a splicing box body, a screen unit is arranged on one surface of the splicing box body, a projector is set in a position opposite to the screen unit in the splicing box body, and a reflection assembly is set between the projector and the screen unit; The first light beam of the projected light beams enters the screen unit, and the second light beam of the light beams beyond the display range of the screen unit is reflected by the reflective component and injected into the splicing seam, and propagates along the gap of the splicing seam. The splicing seam is Produced by the splicing of a spliced box with an adjacent spliced box. In the present invention, the human eyes can watch the image from the splicing seam, thereby eliminating the splitting feeling caused by the splicing seam to the image, which not only improves the display effect of the image, but also reduces the complexity of realizing the rear projection splicing unit, and ensures The continuity of color and brightness of the image is ensured.
Description
Technical Field
The invention relates to the technical field of display, in particular to a rear projection splicing unit, a rear projection splicing system and a rear projection splicing unit adjusting method.
Background
The rear projection tiled display refers to a technology of tiling images displayed by a plurality of rear projection tiled units together for display.
In the related art, a rear projection splicing system includes a plurality of rear projection splicing units, each of which includes a projector and a screen unit, and each of the projectors projects an image onto a corresponding screen unit.
Due to the fact that splicing seams exist between the adjacent back projection splicing units, the displayed image has the feeling of being split, and the display effect of the image is influenced.
Disclosure of Invention
In order to solve the problem that the display effect of an image is affected due to the fact that splicing seams exist between adjacent back projection splicing units, the embodiment of the invention provides a back projection splicing unit, a back projection splicing system and a back projection splicing unit adjusting method. The technical scheme is as follows:
in a first aspect, a rear projection splicing unit is provided, which includes: the screen unit is arranged on one surface of the splicing box body, the projector is arranged in the splicing box body and opposite to the screen unit, and the reflection assembly is arranged between the projector and the screen unit;
and a first light beam in the light beams projected by the projector is incident into the screen unit, a second light beam which exceeds the display range of the screen unit in the light beams is reflected by the reflection assembly and is incident into a splicing seam and is transmitted along the seam of the splicing seam, and the splicing seam is generated by splicing the splicing box body and an adjacent splicing box body.
In a second aspect, a rear projection splicing system is provided, which comprises at least two rear projection splicing units as described in the first aspect.
In a third aspect, a method for adjusting a rear projection splicing unit is provided, where the method is applied to the rear projection splicing unit in the first aspect, and the method includes:
acquiring back projection parameters of the back projection splicing unit;
adjusting the projector and the reflection assembly according to the back projection parameters, wherein the adjusted preset conditions met by the projector and the reflection assembly are as follows: and a first light beam of the light beams projected by the projector is incident into the screen unit, and a second light beam of the light beams, which exceeds the display range of the screen unit, is reflected by the reflection assembly and is incident into the splicing seam and is transmitted along the seam of the splicing seam.
The technical scheme provided by the embodiment of the invention has the beneficial effects that:
the second light beam which exceeds the display range of the screen unit in the light beam is reflected into the splicing seam through the reflection assembly and is transmitted along the seam of the splicing seam, so that human eyes can watch images from the splicing seam, the image splitting feeling caused by the splicing seam is eliminated, and the image display effect is improved.
Because the image watched by the human eyes from the splicing seams comes from the projector, when the image projected by the projector changes, the image watched by the human eyes from the splicing seams also changes, namely, the image watched by the human eyes from the splicing seams changes in real time along with the image projected by the projector, so that the continuity of the color and the brightness of the image displayed among different back projection splicing units is ensured. In the related art, the splicing seam is eliminated by adding an additional external light source, so that the complexity of realizing a rear projection splicing unit is increased, and the continuity of the color and the brightness of an image cannot be ensured.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a top view of a rear projection stitching unit provided in accordance with an embodiment of the present invention;
FIG. 2 is a side view of a rear projection stitching unit provided by an embodiment of the present invention;
FIG. 3 is a schematic diagram of the direction of the outgoing beam within the splice provided by one embodiment of the present invention;
FIG. 4 is a schematic diagram of the movement of the projector and the reflective assembly provided by one embodiment of the present invention;
FIG. 5 is a schematic diagram of the movement of the projector and the reflective assembly provided by one embodiment of the present invention;
FIG. 6 is a schematic diagram of a rear projection splicing system provided by one embodiment of the invention;
FIG. 7 is a flowchart of a method for adjusting a rear projection stitching unit according to an embodiment of the present invention;
FIG. 8 is a flowchart of a method for adjusting a rear projection stitching unit according to an embodiment of the present invention;
fig. 9 is a flowchart of a method for adjusting a rear projection splicing unit according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1, a top view of a rear projection splicing unit according to an embodiment of the present invention is shown. This rear projection concatenation unit includes: the screen unit 101 is arranged on one surface of the splicing box body, the projector 102 is arranged in the splicing box body at a position opposite to the screen unit 101, and the reflection assembly 103 is arranged between the projector 102 and the screen unit 101;
a first light beam of light beams projected by the projector 102 is incident into the screen unit 101, a second light beam of the light beams exceeding the display range of the screen unit 101 is reflected by the reflection assembly 103 to be incident into the splicing seam 104 and is transmitted along the seam of the splicing seam 104, and the splicing seam 104 is generated by splicing the splicing box body with an adjacent splicing box body.
In summary, in the rear projection splicing unit provided in the embodiment of the present invention, the second light beam that exceeds the display range of the screen unit in the light beam is reflected by the reflection assembly and is incident into the splicing seam, and is transmitted along the seam of the splicing seam, so that human eyes can view an image from the splicing seam, thereby eliminating the split feeling of the splicing seam on the image, and improving the display effect of the image.
Because the image watched by the human eyes from the splicing seams comes from the projector, when the image projected by the projector changes, the image watched by the human eyes from the splicing seams also changes, namely, the image watched by the human eyes from the splicing seams changes in real time along with the image projected by the projector, so that the continuity of the color and the brightness of the image displayed among different back projection splicing units is ensured. In the related art, the splicing seam is eliminated by adding an additional external light source, so that the complexity of realizing a rear projection splicing unit is increased, and the continuity of the color and the brightness of an image cannot be ensured.
Referring to fig. 1, the rear projection splicing unit includes: the screen unit 101 is arranged on one surface of the splicing box body, the projector 102 is arranged in the splicing box body at a position opposite to the screen unit 101, and the reflection assembly 103 is arranged between the projector 102 and the screen unit 101;
a first light beam of light beams projected by the projector 102 is incident into the screen unit 101, a second light beam of the light beams exceeding the display range of the screen unit 101 is reflected by the reflection assembly 103 to be incident into the splicing seam 104 and is transmitted along the seam of the splicing seam 104, and the splicing seam 104 is generated by splicing the splicing box body with an adjacent splicing box body.
The reflection unit 103 is a unit capable of reflecting light rays in a mirror surface manner, and may be a mirror or the like, and the present embodiment is not limited thereto.
The first beam is a beam that can be directly incident on the screen unit 101, and the second beam is a beam that can be directly incident on the splice seam 104, assuming that the side of the spliced box is transparent. The light beams are represented by three light rays in fig. 1, and the first light ray and the second light ray form a first light beam and the second light ray and the third light ray form a second light beam when viewed from left to right.
Referring to fig. 2, taking the case that the splice case is placed on a horizontal plane as an example, the positional relationship among the screen unit 101, the projector 102, and the mirror 103 is as shown in fig. 2.
It should be noted that the thickness of the reflective element 103 needs to be smaller than the first threshold, so that the second light beam can be reflected by the reflective element 103 and not totally enter the reflective element 103 from the side of the reflective element 103.
It should be noted that the height of the reflective member 103 needs to be higher than the second threshold value, so that the second light beam can be totally reflected by the reflective member 103.
Referring to fig. 1, a sealed transparent component 105 is disposed on a side surface of the splicing box, an outgoing light beam of the reflection component 103 is emitted into the splicing seam 104 through the transparent component 105, and the transparent component 105 is made of glass.
The transparent member 105 may be a glass window made of glass. Alternatively, the transparent member 105 may be mounted on the side.
The periphery of the transparent member 105 is sealed by a sealant to prevent light in the second beam from leaking out.
It should be noted that the height of the transparent component 105 is greater than or equal to the height of the reflective component 103, so that the outgoing light beam of the reflective component 103 can be totally emitted into the splicing seam 104 through the transparent component 105.
Since the human eye is located opposite to the screen unit 104, after the outgoing light beam of the reflection assembly 103 is incident into the splicing seam 104, the outgoing light beam also needs to propagate through the seam of the splicing seam 104 to the direction of the screen unit 104, so that the outgoing light beam can enter the human eye.
In a specific implementation, the present embodiment provides three implementations of the exit beam propagating along the slit, which are described below.
In a first implementation, the side surfaces of the splice box are coated with a diffuse reflective material, and the light beam incident into the splice seam 104 is diffusely reflected by the diffuse reflective material and propagates along the seam.
In a second implementation, the sides of the splice box are plated with metal, and light beams incident into the splice seam 104 are reflected by the metal and propagate along the seam.
In a third implementation, the side surface of the spliced box body is plated with a dielectric reflective film, and the light beam incident into the splicing seam 104 is reflected by the dielectric reflective film and propagates along the seam.
The side of the splice box is the side on which the transparent component 105 is disposed.
In all three implementations, the outgoing light beam can be reflected to the human eye, please refer to fig. 3, which shows a schematic diagram of the direction of the outgoing light beam in the splicing seam 104 when the human eye is at different positions.
It should be noted that one splice seam 104 corresponds to one set of the reflective component 103 and the transparent component 105. When a plurality of splicing seams 104 exist around the splicing box body, a plurality of groups of reflecting assemblies 103 and transparent assemblies 105 can be correspondingly arranged.
For example, the splice seam 104 is illustrated on the right side of the splice enclosure in FIG. 1, where the reflective component 103 and the transparent component 105 are both on the right side of the projector 102. In practical implementation, the splicing seam 104 may be located on the left side of the splicing box, and the reflective component 103 and the transparent component 105 are both located on the left side of the projector 102; or, the splice seam 104 may be located on the upper side of the splice box, and the reflective component 103 and the transparent component 105 are both located on the upper side of the projector 102; the splice seam 104 may be located on the underside of the splice enclosure, with the reflective component 103 and the transparent component 105 both located on the underside of the projector 102.
Because the width of the splicing seam 104 that the splicing box body produced when splicing may be different, consequently, need adjust the position of projector 102 and reflection subassembly 103 for the light beam that the projector 102 after adjusting throws out includes first light beam and second light beam, and the reflection subassembly 103 after adjusting can not shelter from first light beam, and can reflect the second light beam to splicing seam 104 in. That is, the positions of both the projector 102 and the reflective assembly 103 in the splice box are adjustable.
When the splicing box is realized, the reflection assembly 103 is arranged on a first guide rail in the splicing box body; or, the reflection assembly 103 is disposed on a first bracket, the first bracket is disposed on the first guide rail, and the first bracket is a fixed bracket or a rotating bracket; the projector 102 is arranged on a second guide rail in the splicing box body; alternatively, the projector 102 is disposed on a second bracket disposed on a second rail.
Wherein, the first guide rail is arranged on the side surface of the splicing box body provided with the transparent component 105; or the first guide rail and the second guide rail are arranged on the same plane, and the first guide rail and the second guide rail can be the same or different; or the plane of the second guide rail is parallel to the plane of the second guide rail.
The first support may be a fixed support that cannot rotate and can only move on the first guide rail, or may be a rotating support that can rotate and can also move on the first guide rail, which is not limited in this embodiment. It should be noted that the first support cannot block the first light beam.
The second support may be a fixed support that cannot rotate and can only move on the second guide rail, or may be a rotating support that can rotate and can also move on the second guide rail, which is not limited in this embodiment.
In this embodiment, the user may manually adjust the positions of the projector 102 and the reflection assembly 103, or, alternatively, the splicing box may also automatically adjust the positions of the projector 102 and the reflection assembly 103, so as to improve the accuracy and efficiency of the position adjustment. The present embodiment provides two adjustment modes for automatically adjusting the positions of the projector 102 and the reflective assembly 103, which are described below.
In a first adjustment mode, the rear projection splicing unit further includes an input unit 106 and a control unit 107, and the control unit 107 is respectively connected to the input unit 106, the reflection assembly 103 and the projector 102;
the input unit 106 is configured to receive a back projection parameter input by a user, and send the back projection parameter to the control unit 107, where the back projection parameter includes a width a of the screen unit 101, a projection ratio b of the projector 102, and a width x of the stitching seam 104;
the control unit 107 is configured to calculate an original distance of the projector 102 according to the back projection parameters and the first formula, calculate a target distance of the projector 102 according to the back projection parameters and the second formula, calculate a moving distance and a moving direction according to the original distance and the target distance, control the projector 102 to move the moving distance on the second guide rail in the moving direction, and control the reflection assembly 103 to move the moving distance on the first guide rail in the moving direction;
the original distance is the distance between the projector 102 and the screen unit 101 when all the light beams projected by the projector 102 are incident on the screen unit 101, the target distance is the distance between the projector 102 and the screen unit 101 when the first light beam of the light beams of the projector 102 is incident on the screen unit 101, and the second light beam of the light beams is reflected by the reflection assembly 103 and is incident in the splicing seam;
the first formula is y1A second formula is y2＝(a+2×x)×b，y1Is the original distance, y2Is the target distance.
Referring to fig. 4, the projector 102 in the left side view has moved the moving distance, and if the reflection assembly 103 is not adjusted, the reflection assembly 103 may block part of the first light beam, so that the image displayed on the screen unit 101 is incomplete, therefore, in the right side view, the reflection assembly 103 may also be moved the moving distance, and the relative position between the projector 102 and the reflection assembly 103 is kept unchanged, so that the reflection assembly 103 may not block the first light beam, and may reflect the second light beam into the splicing seam 104.
For example, if the size of the screen formed by splicing all the screen units 101 is 70 inches, the projection ratio is 0.77, and the width of the splicing seam is 2mm, the width of the screen is 1549.8 mm; at the original position, the original distance y of the projector 102 from the screen11549.8 × 0.77 × 1193.346 mm; at the target location, the target distance y of the projector 102 from the screen2(1549.8+2 × 2) × 0.77 ═ 1196.426mm, and the movement distance Δ y ═ y2-y13.08mm, the direction of movement is the opposite direction of the beam projection. That is, the projector 102 moves backward by 3.08mm, and the reflection assembly 103 moves backward by 3.08 mm.
In a second adjustment mode, the first bracket is a rotating bracket, the rear projection splicing unit further comprises an input unit 106 and a control unit 107, and the control unit 107 is respectively connected with the input unit 106, the reflection assembly 103 and the projector 102;
the input unit 106 is configured to receive a back projection parameter input by a user, and send the back projection parameter to the control unit 107, where the back projection parameter includes a width a of the screen unit 101, a projection ratio b of the projector 102, and a width x of the stitching seam 104;
the control unit 107 is configured to calculate an original distance of the projector 102 according to the back projection parameters and a first formula, calculate a target distance of the projector 102 according to the back projection parameters and a second formula, and calculate a movement distance and a movement direction according to the original distance and the target distance; calculating an angle interval of the second light beam according to the back projection parameter, a third formula and a fourth formula, and controlling the first support to rotate so that the reflection assembly 103 is positioned in the angle interval;
the original distance is the distance between the projector 102 and the screen unit 101 when all the light beams projected by the projector 102 are incident on the screen unit 101, the target distance is the distance between the projector 102 and the screen unit 101 when the first light beam of the light beams of the projector 102 is incident on the screen unit 101, and the second light beam of the light beams is reflected by the reflection assembly 103 and is incident in the splicing seam;
the first formula is y1A second formula is y2＝(a+2×x)×b，y1Is the original distance, y2Is the target distance;
the angle interval is (α)1，α2) the third formula is α1＝arctan[a/(2×y2)]the fourth formula is α2＝arctan[(a+2×x)/(2×y2)]。
Referring to fig. 5, the projector 102 in the left side view moves the moving distance, and if the reflection assembly 103 is not adjusted, the reflection assembly 103 blocks part of the first light beam, so that the image displayed on the screen unit 101 is incomplete, and therefore, in the right side view, the reflection assembly 103 can be rotated counterclockwise by a certain angle, so that the reflection assembly 103 does not block the first light beam, and can reflect the second light beam into the splicing seam 104.
For example, if the size of the screen formed by splicing all the screen units 101 is 70 inches, the projection ratio is 0.77, and the width of the splicing seam is 2mm, the width of the screen is 1549.8 mm; at the original position, the original distance y of the projector 102 from the screen11549.8 × 0.77 × 1193.346 mm; at the target location, the target distance y of the projector 102 from the screen2(1549.8+2 × 2) × 0.77 ═ 1196.426mm, and the movement distance Δ y ═ y2-y1the direction of movement is the opposite of the beam projection, i.e. the projector 102 moves backwards by 3.08mm1＝arctan[1549.8/(2×1196.426mm)]，α2＝arctan[(1549.8+2×2)/(2×1196.426)]the angle interval of the second light beam is [ α ]1，α2]The reflection assembly 103 rotates counterclockwise within the angle interval.
In summary, in the rear projection splicing unit provided in the embodiment of the present invention, the second light beam that exceeds the display range of the screen unit in the light beam is reflected by the reflection assembly and is incident into the splicing seam, and is transmitted along the seam of the splicing seam, so that human eyes can view an image from the splicing seam, thereby eliminating the split feeling of the splicing seam on the image, and improving the display effect of the image.
Because the image watched by the human eyes from the splicing seams comes from the projector, when the image projected by the projector changes, the image watched by the human eyes from the splicing seams also changes, namely, the image watched by the human eyes from the splicing seams changes in real time along with the image projected by the projector, so that the continuity of the color and the brightness of the image displayed among different back projection splicing units is ensured. In the related art, the splicing seam is eliminated by adding an additional external light source, so that the complexity of realizing a rear projection splicing unit is increased, and the continuity of the color and the brightness of an image cannot be ensured.
Referring to fig. 6, a schematic structural diagram of a rear projection splicing system according to still another embodiment of the invention is shown. The rear projection splicing system comprises at least two rear projection splicing units.
Wherein, the rear projection splicing unit can be the rear projection splicing unit shown in any one of fig. 1 to 5.
Referring to fig. 7, a flowchart of a method for adjusting a rear projection splicing unit according to an embodiment of the present invention is shown, where the method for adjusting a rear projection splicing unit is applied to the rear projection splicing unit shown in the figure. The adjusting method of the rear projection splicing unit comprises the following steps:
and 701, acquiring back projection parameters of the back projection splicing unit.
The back projection parameters include the width of the screen unit, the throw ratio of the projector, and the width of the stitching seam.
Step 702, adjusting the projector and the reflection assembly according to the back projection parameters, wherein the preset conditions met by the adjusted projector and the adjusted reflection assembly are as follows: a first light beam of the light beams projected by the projector is incident into the screen unit, and a second light beam of the light beams, which exceeds the display range of the screen unit, is reflected by the reflecting assembly to be incident into the splicing seam and is transmitted along the seam of the splicing seam.
In summary, according to the adjusting method of the rear projection splicing unit provided by this embodiment, since the rear projection splicing unit can automatically adjust the projector and the reflection assembly according to the rear projection parameters input by the user, and the user does not need to manually adjust the projector and the reflection assembly, the accuracy and efficiency of adjustment can be improved.
Referring to fig. 8, a flowchart of a method for adjusting a rear projection splicing unit according to an embodiment of the present invention is shown, where the method for adjusting a rear projection splicing unit is applied to the rear projection splicing unit shown in the figure. The adjusting method of the rear projection splicing unit comprises the following steps:
step 801, receiving the back projection parameters input by the user through the input unit, and sending the back projection parameters to the control unit.
The back projection parameters comprise the width of the screen unit, the projection ratio of the projector and the width of the splicing seam.
And 802, calculating an original distance of the projector according to the back projection parameters and a first formula, calculating a target distance of the projector according to the back projection parameters and a second formula, calculating a moving distance and a moving direction according to the original distance and the target distance, controlling the projector to move on a second guide rail along the moving direction for a moving distance, and controlling the reflection assembly to move on the first guide rail along the moving direction for a moving distance through the control unit.
The original distance is the distance between the projector and the screen unit 101 when all the light beams projected by the projector are incident into the screen unit, and the target distance is the distance between the projector and the screen unit 101 when the first light beam of the light beams of the projector is incident into the screen unit and the second light beam of the light beams is reflected by the reflecting assembly and is incident into the splicing seam.
The first formula is y1A second formula is y2＝(a+2×x)×b，y1Is the original distance, y2Is the target distance.
The original distance, the target distance, the first formula and the second formula are described in detail in the embodiment shown in fig. 4.
In summary, according to the adjusting method of the rear projection splicing unit provided by this embodiment, since the rear projection splicing unit can automatically adjust the projector and the reflection assembly according to the rear projection parameters input by the user, and the user does not need to manually adjust the projector and the reflection assembly, the accuracy and efficiency of adjustment can be improved.
Referring to fig. 9, a flowchart of a method for adjusting a rear projection splicing unit according to an embodiment of the present invention is shown, where the method for adjusting a rear projection splicing unit is applied to the rear projection splicing unit shown in the figure. The adjusting method of the rear projection splicing unit comprises the following steps:
step 901, receiving the back projection parameters input by the user through the input unit, and sending the back projection parameters to the control unit.
The back projection parameters comprise the width of the screen unit, the projection ratio of the projector and the width of the splicing seam.
Step 902, calculating an original distance of the projector according to the back projection parameters and a first formula, calculating a target distance of the projector according to the back projection parameters and a second formula, and calculating a moving distance and a moving direction according to the original distance and the target distance by the control unit; and calculating the angle interval of the second light beam according to the back projection parameters, the third formula and the fourth formula, and controlling the first support to rotate to enable the reflection assembly to be positioned in the angle interval.
The original distance is the distance between the projector and the screen unit 101 when all the light beams projected by the projector are incident into the screen unit, and the target distance is the distance between the projector and the screen unit 101 when the first light beam of the light beams of the projector is incident into the screen unit and the second light beam of the light beams is reflected by the reflecting assembly and is incident into the splicing seam.
The first formula is y1A second formula is y2＝(a+2×x)×b，y1Is the original distance, y2Is the target distance;
the angle interval is (α)1，α2) the third formula is α1＝arctan[a/(2×y2)]the fourth formula is α2＝arctan[(a+2×x)/(2×y2)]。
The original distance, the target distance, the first formula, the second formula, the third formula, the fourth formula and the angle interval are described in detail in the embodiment shown in fig. 5.
In summary, according to the adjusting method of the rear projection splicing unit provided by this embodiment, since the rear projection splicing unit can automatically adjust the projector and the reflection assembly according to the rear projection parameters input by the user, and the user does not need to manually adjust the projector and the reflection assembly, the accuracy and efficiency of adjustment can be improved.
It should be noted that: in the rear projection splicing unit provided in the above embodiment, when the rear projection splicing unit is adjusted, only the division of the functional modules is illustrated, and in practical application, the function distribution may be completed by different functional modules according to needs, that is, the internal structure of the rear projection splicing unit is divided into different functional modules, so as to complete all or part of the functions described above. In addition, the embodiments of the back projection splicing unit and the back projection splicing unit adjusting method provided by the embodiments belong to the same concept, and specific implementation processes thereof are detailed in the embodiments of the methods and are not described herein again.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A rear projection splicing unit, comprising: the screen unit is arranged on one surface of the splicing box body, the projector is arranged in the splicing box body and opposite to the screen unit, and the reflection assembly is arranged between the projector and the screen unit;
and a first light beam in the light beams projected by the projector is incident into the screen unit, a second light beam which exceeds the display range of the screen unit in the light beams is reflected by the reflection assembly and is incident into a splicing seam and is transmitted along the seam of the splicing seam, and the splicing seam is generated by splicing the splicing box body and an adjacent splicing box body.
2. The rear projection splicing unit of claim 1, wherein a sealed transparent component is arranged on the side surface of the splicing box body, the emergent light beam of the reflection component is emitted into the splicing seam through the transparent component, and the transparent component is made of glass.
3. Rear projection stitching unit according to claim 1,
the side surface of the spliced box body is coated with a diffuse reflection material, and light beams emitted into the spliced seam are subjected to diffuse reflection by the diffuse reflection material and are transmitted along the seam;
or,
the side surface of the spliced box body is plated with metal, and light beams emitted into the spliced seam are reflected by the metal and spread along the seam;
or,
and the side surface of the spliced box body is plated with a medium reflecting film, and the light beams emitted into the splicing seam are reflected by the medium reflecting film and are transmitted along the seam.
4. Rear projection splicing unit according to any of claims 1 to 3,
the reflection assembly is arranged on a first guide rail in the splicing box body; or the reflecting assembly is arranged on a first bracket, the first bracket is arranged on the first guide rail, and the first bracket is a fixed bracket or a rotating bracket;
the projector is arranged on a second guide rail in the splicing box body; or the projector is arranged on a second bracket, and the second bracket is arranged on the second guide rail.
5. The rear projection splicing unit of claim 4, further comprising an input unit and a control unit, wherein the control unit is connected to the input unit, the reflection assembly and the projector respectively;
the input unit is used for receiving back projection parameters input by a user and sending the back projection parameters to the control unit, and the back projection parameters comprise the width a of the screen unit, the projection ratio b of the projector and the width x of the splicing seam;
the control unit is used for calculating an original distance of the projector according to the back projection parameters and a first formula, calculating a target distance of the projector according to the back projection parameters and a second formula, calculating a moving distance and a moving direction according to the original distance and the target distance, controlling the projector to move the moving distance on the second guide rail along the moving direction, and controlling the reflection assembly to move the moving distance on the first guide rail along the moving direction;
the original distance is the distance between the projector and the screen unit when all light beams projected by the projector are incident into the screen unit, and the target distance is the distance between the projector and the screen unit when a first light beam in the light beams of the projector is incident into the screen unit and a second light beam in the light beams is reflected by the reflection assembly and is incident into a splicing seam;
the first formula is y1A × b, the second formula is y2(a +2 × x) × b, said y1Is the original distance, the y2Is the target distance.
6. The rear projection splicing unit of claim 4, wherein the first support is the rotating support, and the rear projection splicing unit further comprises an input unit and a control unit, and the control unit is respectively connected with the input unit, the reflection assembly and the projector;
the input unit is used for receiving back projection parameters input by a user and sending the back projection parameters to the control unit, and the back projection parameters comprise the width a of the screen unit, the projection ratio b of the projector and the width x of the splicing seam;
the control unit is used for calculating the original distance of the projector according to the back projection parameters and a first formula, calculating the target distance of the projector according to the back projection parameters and a second formula, and calculating the moving distance and the moving direction according to the original distance and the target distance; calculating an angle interval of the second light beam according to the back projection parameter, a third formula and a fourth formula, and controlling the first support to rotate to enable the reflection assembly to be located in the angle interval;
the original distance is the distance between the projector and the screen unit when all light beams projected by the projector are incident into the screen unit, and the target distance is the distance between the projector and the screen unit when a first light beam in the light beams of the projector is incident into the screen unit and a second light beam in the light beams is reflected by the reflection assembly and is incident into a splicing seam;
the first formula is y1A × b, the second formula is y2(a +2 × x) × b, said y1Is the original distance, the y2Is the target distance;
the angle interval is (α)1，α2) the third formula is α1＝arctan[a/(2×y2)]the fourth formula is α2＝arctan[(a+2×x)/(2×y2)]。
7. A rear projection splicing system, which comprises at least two rear projection splicing units, wherein the rear projection splicing units are the rear projection splicing units as claimed in any one of claims 1 to 6.
8. A rear projection splicing unit adjusting method applied to the rear projection splicing unit of any one of claims 1 to 6, the method comprising:
acquiring back projection parameters of the back projection splicing unit;
adjusting the projector and the reflection assembly according to the back projection parameters, wherein the adjusted preset conditions met by the projector and the reflection assembly are as follows: and a first light beam of the light beams projected by the projector is incident into the screen unit, and a second light beam of the light beams, which exceeds the display range of the screen unit, is reflected by the reflection assembly and is incident into the splicing seam and is transmitted along the seam of the splicing seam.
9. The method of claim 8, applied in a rear projection stitching unit as claimed in claim 5;
the acquiring of the back projection parameters of the back projection splicing unit comprises: receiving back projection parameters input by a user through the input unit, and sending the back projection parameters to the control unit, wherein the back projection parameters comprise the width a of the screen unit, the projection ratio b of the projector and the width x of the splicing seam;
said adjusting said projector and said reflective assembly according to said rear projection parameters, comprising: calculating an original distance of the projector according to the back projection parameters and a first formula, calculating a target distance of the projector according to the back projection parameters and a second formula, calculating a moving distance and a moving direction according to the original distance and the target distance, controlling the projector to move the moving distance on the second guide rail along the moving direction, and controlling the reflection assembly to move the moving distance on the first guide rail along the moving direction by the control unit;
the original distance is the distance between the projector and the screen unit when all light beams projected by the projector are incident into the screen unit, and the target distance is the distance between the projector and the screen unit when a first light beam in the light beams of the projector is incident into the screen unit and a second light beam in the light beams is reflected by the reflection assembly and is incident into a splicing seam;
the first isFormula is y1A × b, the second formula is y2(a +2 × x) × b, said y1Is the original distance, the y2Is the target distance.
10. The method of claim 8, applied in a rear projection stitching unit as claimed in claim 6;
the acquiring of the back projection parameters of the back projection splicing unit comprises: receiving back projection parameters input by a user through the input unit, and sending the back projection parameters to the control unit, wherein the back projection parameters comprise the width a of the screen unit, the projection ratio b of the projector and the width x of the splicing seam;
said adjusting said projector and said reflective assembly according to said rear projection parameters, comprising: calculating an original distance of the projector according to the back projection parameters and a first formula, calculating a target distance of the projector according to the back projection parameters and a second formula, and calculating a moving distance and a moving direction according to the original distance and the target distance by the control unit; calculating an angle interval of the second light beam according to the back projection parameter, a third formula and a fourth formula, and controlling the first support to rotate to enable the reflection assembly to be located in the angle interval;
the original distance is the distance between the projector and the screen unit when all light beams projected by the projector are incident into the screen unit, and the target distance is the distance between the projector and the screen unit when a first light beam in the light beams of the projector is incident into the screen unit and a second light beam in the light beams is reflected by the reflection assembly and is incident into a splicing seam;
the first formula is y1A × b, the second formula is y2(a +2 × x) × b, said y1Is the original distance, the y2Is the target distance;
the angle interval is (α)1，α2) the third formula is α1＝arctan[a/(2×y2)]the fourth formula is α2＝arctan[(a+2×x)/(2×y2)]。
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| CN109272876B (en) * | 2018-11-21 | 2020-12-11 | 威创集团股份有限公司 | A splicing display system |
| CN111105714B (en) * | 2019-12-20 | 2022-01-28 | 维沃移动通信有限公司 | Display module and electronic equipment |
| CN114025143B (en) * | 2021-11-08 | 2023-10-03 | 青岛海信激光显示股份有限公司 | Projector and splicing projection method |
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Effective date of registration: 20200818 Address after: 266555 Qian WAN port road, Huangdao District, Qingdao, Shandong Province, No. 218 Patentee after: Qingdao Hisense Laser Display Co.,Ltd. Address before: Donghai West Road 266071 Shandong city of Qingdao province No. 17 Patentee before: HISENSE Co.,Ltd. |
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