WO2023046079A1 - 投影装置 - Google Patents

投影装置 Download PDF

Info

Publication number
WO2023046079A1
WO2023046079A1 PCT/CN2022/120929 CN2022120929W WO2023046079A1 WO 2023046079 A1 WO2023046079 A1 WO 2023046079A1 CN 2022120929 W CN2022120929 W CN 2022120929W WO 2023046079 A1 WO2023046079 A1 WO 2023046079A1
Authority
WO
WIPO (PCT)
Prior art keywords
frame
screen
sub
curtain
protrusion
Prior art date
Application number
PCT/CN2022/120929
Other languages
English (en)
French (fr)
Inventor
代琪
冯宇
侯蕊
王超
肖伟
Original Assignee
青岛海信激光显示股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202111131292.9A external-priority patent/CN115877646A/zh
Priority claimed from CN202111135712.0A external-priority patent/CN113741134A/zh
Priority claimed from CN202111188247.7A external-priority patent/CN115963686A/zh
Application filed by 青岛海信激光显示股份有限公司 filed Critical 青岛海信激光显示股份有限公司
Priority to CN202280060247.5A priority Critical patent/CN117940847A/zh
Publication of WO2023046079A1 publication Critical patent/WO2023046079A1/zh

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • 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
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/58—Projection screens collapsible, e.g. foldable; of variable area

Definitions

  • the present disclosure relates to the technical field of projection, and in particular to a projection device.
  • a projection device mainly includes an optical engine and a projection screen.
  • the light outlet of the optical engine faces the projection screen to emit light beams to the projection screen, and the projection screen is used to receive the light beams to realize image display.
  • a projection device in one aspect, includes a projection screen and an optical engine.
  • the projection screen is configured to display a projected picture
  • the projection screen includes a folding mechanism, a frame and a curtain.
  • the folding mechanism includes two opposite first frames.
  • the frame includes two second frames opposite to each other.
  • the screen has opposite first side, second side and opposite third side, fourth side; the first side and the second side are respectively connected with the two second frames Fixedly connected, the third side and the fourth side are respectively fixedly connected to the two first frames.
  • Respective two ends of the two first frames are detachably connected to respective two ends of the two second frames, and the two first frames and the two second frames enclose a frame.
  • the two first frames are configured to be capable of curling, so that the two first frames can drive the curtain to curl.
  • the optical engine is configured to emit light beams to the projection screen.
  • a projection device in another aspect, includes a projection screen and an optical engine.
  • the projection screen is configured to display a projected picture
  • the projection screen includes a frame, a folding mechanism, a curtain, a first tension member and a second tension member.
  • the frame includes two opposite first frames and two opposite second frames; the second frame includes a third sub-frame and a fourth sub-frame.
  • the folding mechanism includes a hinge, the hinge includes a rotating shaft, and the direction of the rotating shaft is parallel to the length direction of the first frame and perpendicular to the length direction of the second frame; the hinge is configured to drive The third sub-frame and the fourth sub-frame rotate around the rotation axis.
  • the screen is fixedly connected with the frame, and the edge of the screen is folded to wrap the edge of the frame.
  • the first tensioning member is arranged on the side of the frame away from the curtain, and one end of the first tensioning member is fixed on the edge of the curtain, and the other end of the first tensioning member Slidingly connected with the second frame.
  • the second tensioning member is arranged on the side of the frame away from the curtain, and one end of the second tensioning member is fixed on the edge of the curtain, and the other end of the second tensioning member fixed on the first frame; the second tensioning member is configured to drive the curtain to move along the length direction of the second frame, so that the first tensioning member is driven by the curtain , swipe across the second frame.
  • the optical engine is configured to emit light beams to the projection screen.
  • FIG. 1 is a schematic view of a projection device in use according to some embodiments of the present disclosure
  • Fig. 2 is a front view of a projection screen provided according to some embodiments of the present disclosure
  • Fig. 3 is an exploded structure diagram of the projection screen shown in Fig. 2;
  • Fig. 4 is an effect diagram of a curled projection screen provided according to some embodiments of the present disclosure.
  • Fig. 5 is a side view of a first frame provided according to some embodiments of the present disclosure.
  • Fig. 6 is a front view of a first frame provided according to some embodiments of the present disclosure.
  • Fig. 7 is an effect diagram after deformation of the first part of the first frame shown in Fig. 6;
  • Fig. 8 is a structural diagram of another projection screen provided according to some embodiments of the present disclosure.
  • Fig. 9 is a partial enlarged view of circle A' in Fig. 8;
  • Fig. 10 is a partially enlarged exploded structure diagram at circle A' in Fig. 8;
  • Fig. 11 is a partial enlarged view of circle B' in Fig. 8;
  • Fig. 12 is a structural diagram of another projection screen provided according to some embodiments of the present disclosure.
  • Fig. 13 is a partial enlarged view at the circle C' place in Fig. 12;
  • Fig. 14 is an effect diagram of a projection screen suspended by a suspension part according to some embodiments of the present disclosure
  • Fig. 15 is a structural diagram of another first frame provided according to some embodiments of the present disclosure.
  • Fig. 16 is a structural diagram of a foldable projection screen provided by the related art.
  • Fig. 17 is an effect diagram of a projection screen in different states according to some embodiments of the present disclosure.
  • Fig. 18 is a structural diagram of a curtain provided according to some embodiments of the present disclosure.
  • Figure 19 is an exploded view of the curtain shown in Figure 18;
  • Fig. 20 is a structural diagram of a hinge provided according to some embodiments of the present disclosure.
  • Fig. 21 is a partially enlarged view of a connection structure of a curtain, a first tension member and a second frame according to some embodiments of the present disclosure
  • Fig. 22 is a partial enlarged view of the connection relationship between a curtain, a second tensioning member and a first frame according to some embodiments of the present disclosure
  • Fig. 23 is a structural diagram of another projection screen provided according to some embodiments of the present disclosure.
  • Fig. 24 is a partial enlarged view of circle D' in Fig. 23;
  • Fig. 25 is a connection structure diagram of a slider and a second frame according to some embodiments of the present disclosure.
  • Fig. 26 is a connection structure diagram of another slider and a second frame according to some embodiments of the present disclosure.
  • Fig. 27 is a connection structure diagram of another slider and a second frame according to some embodiments of the present disclosure.
  • Fig. 28 is a connection structure diagram of another slider and a second frame according to some embodiments of the present disclosure.
  • Fig. 29 is another connection structure diagram of a slider and a second frame according to some embodiments of the present disclosure.
  • Fig. 30 is a connection structure diagram of the first magnet and the second adjusting rod according to some embodiments of the present disclosure.
  • Fig. 31 is a connection structure diagram of the first magnet and the second adjusting rod according to other embodiments of the present disclosure.
  • Fig. 32 is a structural diagram of another projection screen provided according to some embodiments of the present disclosure.
  • Fig. 33 is a structural diagram of a projection screen provided according to other embodiments of the present disclosure.
  • Fig. 34 is a partial structural diagram of a frame provided according to some embodiments of the present disclosure.
  • Fig. 35 is a partial structural diagram of another frame provided according to some embodiments of the present disclosure.
  • Fig. 36 is a structural diagram of an optical film with a microstructure in the prior art
  • Fig. 37 is a structural diagram of an optical film provided according to some embodiments of the present disclosure.
  • Fig. 38 is a structural diagram of a reflective layer provided according to some embodiments of the present disclosure.
  • Fig. 39 is a structural diagram of another reflective layer provided according to some embodiments of the present disclosure.
  • Fig. 40 is a structural diagram of a first surface coated with diffusion particles according to some embodiments of the present disclosure.
  • Fig. 41 is a structural diagram of diffused particles distributed in a Fresnel lens layer according to some embodiments of the present disclosure.
  • Fig. 42 is a structural diagram when a seventh protrusion is provided on the first surface according to some embodiments of the present disclosure.
  • first and second are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as “first” and “second” may explicitly or implicitly include one or more of these features.
  • connection should be understood in a broad sense.
  • connection can be a fixed connection, a detachable connection, or an integral body; it can be a direct connection or an indirect connection through an intermediary.
  • a projection device 1000 includes a projection screen 100 and an optical engine 200 .
  • the optical engine 200 is placed at the front and bottom of the projection screen 100 , and the audience 300 is located in front of the projection screen 100 and looks at the projection screen 100 .
  • the incident light 2A emitted by the optical engine 200 illuminates the projection screen 100 , the incident light 2A forms an image in the projection screen 100 , and is reflected by the projection screen 100 to finally form an outgoing light 2B to illuminate the audience 300 .
  • the projection screen 100 includes a frame 1 and a curtain 2 .
  • the curtain 2 is arranged on the front of the frame 1 , and the front of the frame 1 is the side facing the audience 300 .
  • the size of the projection screen is getting bigger and bigger, and it takes up a lot of space.
  • the following four methods are generally adopted to solve this problem.
  • the first method is to carry the complete projection screen from the stairs to the home by manpower; this method is inefficient, and the projection screen is easy to be bumped during the transportation.
  • the second method is to use a crane to lift the complete projection screen into the home through the window; this method is only suitable for lower floors, and if the projection screen is too large, the window may need to be dismantled, and the cost is high.
  • the third method is to divide the complete projection screen into parts and transport them, and then splice and assemble them to obtain a complete projection screen after being transported into the home. However, since the scattered parts need to be reassembled after the projection screen enters the home, the assembly efficiency of the projection screen is reduced.
  • the fourth way is to prepare the projection screen as a foldable projection screen, as shown in Figure 16, the frame 1' is foldable.
  • the projection screen In order to avoid creases after the curtain 2' is unfolded, the projection screen usually needs to be folded outwards, that is, the curtain 2' is located at the outermost side of the folded projection screen.
  • the curtain 2' will slide relative to the frame 1'.
  • a bulge 3' is easily generated at the folded position of the curtain 2', resulting in a poor flatness of the curtain 2', which in turn leads to a poor display effect of the projection screen displayed on the curtain 2'. Difference.
  • the projection screen 100 further includes a folding mechanism 10 , and the folding mechanism 10 includes two opposite first frames 16 .
  • the frame 1 includes two opposite second frames 17 .
  • the end of the first frame 16 is detachably connected to the end of the second frame 17 .
  • Both ends of the first frame 16 are respectively connected to the ends of the two second frames 17
  • both ends of the second frame 17 are respectively connected to the ends of the two first frames 16 to enclose the frame 1 .
  • the first frame 16 is the frame in the direction of the short side of the frame 1
  • the second frame 17 in the projection screen 100 is the frame in the direction of the long side of the frame 1 .
  • the curtain 2 includes four sides, and the four sides of the curtain 2 are respectively fixedly connected with the first frame 16 and the second frame 17 .
  • the four sides include the opposite first side A and the second side B, and the opposite third side C and the fourth side D, and the four sides wrap the frame 1 .
  • the first side A and the second side B are respectively fixedly connected (such as glued) to the second frame 17, and the third side C and the fourth side D are respectively fixedly connected (such as glued) to the first frame 16. catch).
  • the first frame 16 can be deformed in a direction perpendicular to the screen 2 , so that the deformed first frame 16 and the screen 2 can be curled around the second frame 17 at the same time.
  • the overall size of the rolled projection screen 100 is relatively small, thereby simplifying the handling difficulty of the projection screen 100 .
  • the first frame 16 includes a first portion 161 and a second portion 162 .
  • the first portion 161 and the second portion 162 respectively include a curved portion S and planar portions P located on both sides of the curved portion S.
  • the flat portion P of the first portion 161 is connected to the flat portion P of the second portion 162 , and the curved portion S of the first portion 161 and the curved portion S of the second portion 162 form a cavity a1 .
  • a press is used to crimp the planar portion P of the first portion 161 and the planar portion P of the second portion 162 , so that the planar portion P of the first portion 161 and the planar portion P of the second portion 162 are connected together.
  • the curved portion S of the first portion 161 of the first frame 16 includes a plane T, and the plane T is connected with the third side C and the fourth side D of the screen 2 .
  • the plane T is connected with the third side C and the fourth side D of the screen 2 .
  • the projection screen 100 further includes a first tension member 3 and a second tension member 4 , and the first tension member 3 and the second tension member 4 are disposed in the cavity a1 .
  • the first frame 16 is connected with the end of the second frame 17 to form the frame 1, due to the hindrance of the second tension member 4 connecting the second frame 17 and the first frame 16 (see FIG. 9 ), the first Even if the frame 16 is subjected to a force in a direction perpendicular to the screen 2 or a force in other directions, the first frame 16 is still not easily deformed. In this way, the frame 1 composed of the first frame 16 and the second frame 17 can effectively support the screen 2 and ensure that the projection screen can be presented on the screen 2 .
  • the first frame 16 is semi-rigid. That is, the first frame 16 is rigid in a direction parallel to the screen 2 (such as the X-axis direction or the Y-axis direction), and the first frame 16 is not easily deformed when subjected to a force in a direction parallel to the screen 2. Therefore, The screen 2 can be effectively supported by the first frame 16 . In the direction perpendicular to the screen 2, the first frame 16 is non-rigid and has elasticity.
  • the curved portion S of the first part 161 can be deformed when subjected to a force perpendicular to the direction of the screen 2, To stick to the curved portion S of the second part 162 .
  • the thickness of the first frame 16 in the direction perpendicular to the screen 2 is relatively small, so that when the screen 2 is rolled up with one of the two second frames 17 as the curling axis, the screen 2 can be further lowered. Volume after curling.
  • the first part 161 after a reaction force is applied to the deformed first part 161, the first part 161 can be restored to its undeformed state, so that a cavity a1 can be formed between the first part 161 and the second part 162 .
  • the first part 161 and the second part 162 are elastic sheets, and the first part 161 and the second part 162 can be curled after being deformed, and can play a supporting role before being deformed.
  • the second tension member 4 is used to connect the end of the first frame 16 and the end of the second frame 17 .
  • the end of the first frame 16 can be detachably connected to the end of the second frame 17 through the second tensioning member 4 .
  • the second tension member 4 is configured to drive the screen 2 to move in the length direction of the second frame 17 (ie, the length direction of the first side A) through the first frame 16, so as to adjust the length of the screen 2 on the second frame 17 Tension in direction.
  • the end of the first frame 16 and the end of the second frame 17 are first connected by the second tensioning member 4, and then the screen 2 is adjusted on the second frame by the second tensioning member 4.
  • the second tension member 4 drives the first frame 16 along the direction parallel to the length of the second frame 17 and away from the center of the screen 2 move, and then the first frame 16 drives the screen 2 to be tensioned. In this way, the screen 2 can be stretched along the length direction of the second frame 17, thereby ensuring better flatness of the screen 2.
  • the second frame 17 includes a sixth groove 171, and a first through hole 172 communicating with the sixth groove 171, and the sixth groove 171 communicates with the first through hole 172.
  • the hole 172 is disposed at an end of the second frame 17 .
  • the longitudinal direction of the sixth groove 171 and the penetrating direction of the first through hole 172 are parallel to the longitudinal direction of the second frame 17 .
  • the second tensioning member 4 includes a first connecting member 401 , a first protrusion 402 and a first adjusting rod 403 .
  • the first connecting piece 401 is located in the cavity a1 , and the first connecting piece 401 is fixedly connected to the end of the first frame 16 .
  • the first connecting member 401 is connected to the end of the first frame 16 through a screw f1 , and it can also be fixedly connected in other ways.
  • the first protrusion 402 is disposed in the sixth groove 171 , and the first protrusion 402 is fixedly connected to the first connecting member 401 .
  • the first adjustment rod 403 passes through the first through hole 172 and is movably connected with the first protrusion 402 , the first protrusion 402 can move along the length direction of the first adjustment rod 403 .
  • the first adjusting rod 403 can drive the first connecting member 401 to move away from the center of the screen 2 , and then the first connecting piece 401 can drive the first frame 16 to move away from the center of the screen 2, and the first frame 16 can drive the screen 2 to be in a tensioned state; or, the first adjusting rod 403 can drive the first connecting rod 403
  • the member 401 moves toward the center of the screen 2, and the first connecting member 401 can drive the first frame 16 to move toward the center of the screen 2, and the first frame 16 can drive the screen 2 to be in a relaxed state. In this way, the tension degree of the second tension member 4 to the screen 2 in the direction parallel to the length of the second frame 17 can be
  • the second frame 17 further includes a sixth protrusion b1, the sixth protrusion b1 is located in the first through hole 172, and the end of the first adjustment rod 403 is away from the first protrusion 402 contact with the sixth protrusion b1.
  • the curtain 2 is tensioned by the second tension member 4
  • the first protrusion 402 includes a threaded hole
  • the first adjusting rod 403 is a screw rod
  • the threaded hole in the first protrusion 402 includes an internal thread
  • the first adjusting rod 403 includes an external thread that matches the internal thread of the threaded hole .
  • the external thread of the first adjustment rod 403 engages with the internal thread in the threaded hole, so that the first protrusion 402 drives the first connecting member 401 away from the curtain 2
  • the direction of the center moves, and then the first connecting part 401 can drive the first frame 16 to move away from the center of the screen 2; or, the first protrusion 402 drives the first connecting part 401 to move toward the direction close to the center of the screen 2, and then the second A connecting piece 401 can drive the first frame 16 to move towards the center of the screen 2 .
  • the first frame 16 includes a first sub-frame 100 a and a second sub-frame 100 b.
  • the first sub-frame 100a includes a first end 100a1 and a second end 100a2;
  • the second sub-frame 100b includes a first end 100b1 and a second end 100b2.
  • the first connecting member 401 is fixed on the first end 100a1 of the first sub-frame 100a and the first end 100b1 of the second sub-frame 100b.
  • the first connecting member 401 is fixedly connected to the first end 100a1 of the first sub-frame 100a and the first end 100b1 of the second sub-frame 100b through screws f1.
  • the first tension member 3 is respectively connected to the second end 100a2 of the first sub-frame 100a and the second end 100b2 of the second sub-frame 100b.
  • the first tension member 3 is configured to adjust the tension of the screen 2 in the length direction of the first frame 16 , so that the screen 2 is in a tensioned state or a loose state in the length direction of the first frame 16 .
  • the first tensioning member 3 includes two second connecting members 31 and elastic elements 32 .
  • the elastic element 32 is located between the two second connecting parts 31, and the two second connecting parts 31 are located in the cavity a1, and are respectively fixed on the second end 100a2 of the first sub-frame 100a and the second end of the second sub-frame 100b. end 100b2.
  • the two second connecting members 31 are fixedly connected to the second end 100a2 of the first sub-frame 100a and the second end 100b2 of the second sub-frame 100b respectively by screws.
  • the screen 2 when the projection screen 100 is unfolded, in the process of adjusting the tension of the screen 2 in the length direction of the first frame 16 through the first tension member 3, the screen 2 is fixedly connected with the first frame 16, the second Two second connecting parts 31 in a tension member 3 are respectively fixedly connected with the second end 100a2 of the first sub-frame 100a and the second end 100b2 of the second sub-frame 100b in the first frame 16, and the elastic elements 32 are
  • the first frame 16 generates an active force directed to the second frame 17, and the two second connecting members 31 drive the first sub-frame 100a and the second sub-frame 100b in the first frame 16 in a direction parallel to the length of the first frame 16. Relative movement occurs, and then the first frame 16 drives the screen 2 to be tensioned. In this way, the screen 2 can be stretched in the lengthwise direction parallel to the first frame 16 , thereby ensuring better flatness of the screen 2 .
  • one of the two second connectors 31 includes a second protrusion 311 , and the other includes a first groove 312 matching the shape of the second protrusion 311 and a third groove 312 .
  • the groove 313 , and at least part of the second protrusion 311 is located in the first groove 312 .
  • the first groove 312 and the third groove 313 are arranged coaxially.
  • the elastic element 32 between the two second connecting parts 31 is a compression spring, and the compression spring is sleeved on the second protrusion 311.
  • the compression spring Two ends of the two second connecting parts 31 are respectively abutted against, and a part of the compression spring is located in the third groove 313 .
  • the compression spring can only move in the direction parallel to the first frame 16, and it is not easy to shake in the direction perpendicular to the first frame 16, so that the connection stability between the first sub-frame 100a and the second sub-frame 100b can be made better.
  • the elastic element 32 can also be a shrapnel.
  • the shape of the first connecting piece 401 and the shape of the second connecting piece 31 match the shape of the cavity a1, that is, the shape of the cross section of the first connecting piece 401, the shape of the cross section of the second connecting piece 31 and the shape of the cavity a1 match.
  • the shape of the cross-section of the chamber a1 is the same.
  • the first connecting piece 401 and the second connecting piece 31 can be filled in the cavity a1, so that after the end of the first frame 16 is connected with the end of the second frame 17, the first frame 16 is perpendicular to the screen 2
  • the rigidity in the direction is enhanced to ensure that the first frame 16 can effectively support the screen 2 .
  • the projection screen 100 further includes a sealing element disposed on the side walls of the first connecting part 401 and the second connecting part 31 to further improve the sealing performance of the cavity a1.
  • the folding mechanism 10 further includes a third frame 18 located between the two first frames 16, the end of the third frame 18 is detachably connected to the second frame 17, and The third frame 18 is fixedly connected (for example, glued) to the screen 2 . In this way, the support stability of the screen 2 by the third frame 18 and the two first frames 16 is relatively good.
  • the structure of the third frame 18 can refer to the above-mentioned first frame 16 .
  • the frame 1 further includes a support 19 .
  • the supporting member 19 includes a third connecting member 191 and a third protrusion 192 .
  • the third connecting piece 191 is fixedly connected to the third protrusion 192, and the third connecting piece 191 is fixedly connected to the end of the third frame 18.
  • the third protrusion 192 includes a screw hole c1 , and the length direction of the screw hole c1 is perpendicular to the length direction of the second frame 17 .
  • the second frame 17 includes a first opening d1, and the screw f1 passes through the first opening d1 and is connected to the threaded hole c1. In this way, the detachable connection between the end of the third frame 18 and the second frame 17 can be realized.
  • the second frame 17 includes a bottom plate 173 and two hanging plates 174 .
  • the end of the bottom plate 173 is connected to the end of the first frame 16 through the second tension member 4 .
  • the two hanging plates 174 are fixedly connected to both sides of the bottom plate 173 respectively.
  • the frame 1 also includes a suspension part 20 .
  • the hanging part 20 includes a hook 201 for engaging with at least one of the two hanging plates 174 . In this way, after the hanging part 20 is fixed on the wall, the hook 201 can be engaged with at least one hanging board 174 to hang the projection screen 100 on the wall.
  • the hanging part 20 may be fixed on the wall by screws f1.
  • the first frame 16 includes a third portion 163
  • the third portion 163 includes a fourth groove 1631
  • the fourth groove 1631 extends along the length direction of the third portion 163 .
  • the third part 163 is an elastic sheet, for example, the third part 163 is a metal elastic sheet.
  • the third part 163 can be made to Deformation occurs in a direction perpendicular to the screen 2 .
  • the curtain 2 can be rolled in the lengthwise direction perpendicular to the first frame 16 , so that the overall size of the rolled projection screen 100 is smaller, thereby simplifying the handling difficulty of the projection screen 100 .
  • FIGS. 17 to 35 illustrate another projection screen according to some embodiments of the present disclosure. Only the differences between the laser shown in FIG. 17 to FIG. 35 and the projection screen shown in FIG. 2 to FIG. 15 will be described below, and the similarities will not be repeated here. It should be noted that, in FIGS. 17 to 35 , for the same parts as those in the projection screen shown in FIGS. 2 to 15 , the same reference numerals as those shown in FIGS. 2 to 15 are used.
  • the second frame 17 includes a third sub-frame 175 and a fourth sub-frame 176 .
  • the folding mechanism 10 includes a hinge 101 .
  • the hinge 101 includes a first hinge 1011 , a second hinge 1012 and a rotating shaft 1013 .
  • the hinge 101 is configured to drive the third sub-frame 175 and the fourth sub-frame 176 to rotate around the rotation axis 1013 .
  • the first hinge 1011 and the second hinge 1012 are connected through a rotating shaft 1013 to realize the relative rotation of the first hinge 1011 and the second hinge 1012 .
  • the first hinge 1011 is fixedly connected to the third sub-frame 175
  • the second hinge 1012 is fixedly connected to the fourth sub-frame 176 , thereby realizing relative rotation between the third sub-frame 175 and the fourth sub-frame 176 .
  • first hinge 1011 and the second hinge 1012 both include protrusions, and the protrusions are respectively arranged on the surfaces of the first hinge 1011 and the second hinge 1012 near the rotating shaft 1013, and the rotating shaft 1013 passes through the protrusions. so as to realize the rotatable connection between the first hinge 1011 and the second hinge 1012.
  • first hinge 1011 and the second hinge 1012 are rotated to the coplanar position, the end of the first hinge 1011 close to the rotation shaft 1013 and the end of the second hinge 1012 close to the rotation shaft 1013 abut against each other, thereby the first hinge Page 1011 and second hinge 1012 are constrained in the same plane.
  • the projection screen 100 is in the unfolded state; when the third sub-frame 175 is rotated to the stacked position relative to the fourth sub-frame 176 through the hinge 101, the third sub-frame 175 and the fourth sub-frame 176 can form a stacked arrangement
  • the frame is folded. At this time, the projection screen 100 is in a folded state.
  • the curtain 2 includes an optical film 21 and a flexible carrier 22 .
  • the optical film 21 is fixed on one side of the flexible carrier 22, the other side of the flexible carrier 22 is attached to the front of the frame 1, the edge of the flexible carrier 22 extends out of the edge of the optical film 21, and the flexible carrier 22 extends out of the optical film Part of the sheet 21 is folded to the back of the frame 1 , and the edge of the flexible carrier 22 is limited on the back of the frame 1 by the first tension member 3 and the second tension member 4 .
  • the optical film 21 is used to receive the light beam emitted by the optical engine 200 to realize the display of the picture.
  • the optical film 21 is fixed on the flexible carrier 22 by bonding.
  • the flexible carrier 22 is a flexible cloth, or other flexible parts, as long as it can be bent arbitrarily and has a certain flatness after tension. And, the projection of the flexible carrier 22 on the plane where the optical film 21 is located covers the optical film 21 or covers the four sides of the optical film 21, so as to ensure that the edges of the flexible carrier 22 stretch out from the four sides of the optical film 21, and then The flatness of the optical film 21 can be guaranteed while the flexible carrier 22 is tightened.
  • the first tension member 3 is arranged on the back of the frame 1, one end of the first tension member 3 is fixed on the first side A or the second side B of the curtain 2, the first tension member 3 The other end is slidingly connected with the second frame 17.
  • the second frame 17 is a frame in the frame 1 perpendicular to the rotation axis 1013 of the hinge 101 , that is, the second frame 17 is a frame where the long side of the frame 1 is located.
  • the third sub-frame 175 and the fourth sub-frame 176 are in a coplanar position, they are arranged in parallel and can form the second frame 17 .
  • the first tension member 3 is used to adjust the tension in the direction parallel to the rotation axis 1013 of the hinge 101 (that is, the length direction of the first frame 16 ), so that the screen 2 is in the longitudinal direction of the first frame 16 . tense or relaxed state.
  • the distance between the edge of the screen 2 and the second frame 17 can be adjusted through the first tensioning member 3 to adjust the tension of the screen 2 in the length direction of the first frame 16 . Since the first tensioning member 3 is slidably connected to the second frame 17 , the first tensioning member 3 can slide on the second frame 17 along the length direction of the second frame 17 .
  • the second tension member 4 is arranged on the back of the frame 1, one end of the second tension member 4 is fixed on the third side C or the fourth side D of the curtain 2, and the second tension member 4 The other end is fixed on the first frame 16.
  • the first frame 16 is a frame in the frame 1 parallel to the rotation axis 1013 of the hinge 101 , that is, the first frame 16 is a frame where the short side of the frame 1 is located.
  • the first frame 16 is respectively connected to one end of the third sub-frame 175 and one end of the fourth sub-frame 176 , and is perpendicular to the length direction of the second frame 17 .
  • the distance between the edge of the screen 2 and the first frame 16 can be adjusted by the second tensioning member 4, so as to adjust the screen 2 in a direction perpendicular to the rotation axis 1013 of the hinge 101 (that is, The tension on the length direction of the second frame 17).
  • the second tensioning member 4 is configured to drive the screen 2 to move along the length direction of the second frame 17 , so that the first tensioning member 3 slides on the second frame 17 driven by the screen 2 .
  • the tension of the screen 2 in the length direction of the first frame 16 is first adjusted by the first tension member 3, and then the tension of the screen 2 on the second frame is adjusted by the second tension member 4.
  • the projection screen 100 further includes a first support rod 5 connected to the edge of the screen 2 along the length direction of the second frame 17 .
  • the screen 2 further includes a receiving portion 23 disposed on the edge of the screen 2 , that is, the edge of the flexible carrier 22 is bent to the back of the frame 1 to form the receiving portion 23 .
  • the accommodation portion 23 includes an opening d2.
  • the first support rod 5 is disposed in the accommodating portion 23 at the corresponding position of the second frame 17 or the first frame 16 .
  • the second frame 17 further includes a fifth groove 177 extending along the length direction of the second frame 17 .
  • the first tension member 3 includes a first adjustment hole 301 and a second adjustment rod 302
  • the first adjustment hole 301 is arranged on the first support rod 5
  • the second adjustment rod 302 At least part of is located in the first adjustment hole 301 and is movably connected with the first adjustment hole 301 .
  • the second adjustment rod 302 passes through the fifth groove 177 and the opening d2 on the accommodating portion 23 to be movably connected with the first adjustment hole 301 in turn, and the end of the second adjustment rod 302 away from the first adjustment hole 301 is connected to the first adjustment hole 301
  • the two frames 17 are slidingly connected.
  • the length of the second adjusting rod 302 in the first adjusting hole 301 can be adjusted, and the second adjusting rod 302 can slide in the fifth groove 177 .
  • the first adjusting hole 301 is a threaded hole with an internal thread
  • the second adjusting rod 302 is a screw rod
  • the second adjusting rod 302 has an external thread matching the internal thread of the first adjusting hole 301 .
  • the external thread on the second adjustment rod 302 engages with the internal thread in the first adjustment hole 301, so that the first support rod 5 moves along the fifth groove 177. Or, make the first support rod 5 move in a direction away from the fifth groove 177 .
  • the first support rod 5 drives the edge of the screen 2 to move in a direction close to the fifth groove 177 , or the first support rod 5 drives the edge of the screen 2 to move in a direction away from the fifth groove 177 .
  • the tension of the screen 2 in the length direction of the first frame 16 can be adjusted.
  • the first tensioning member 3 further includes a slider 303 , the slider 303 is connected to the end of the second adjustment rod 302 away from the first adjustment hole 301 , and is located in the fifth groove 177 away from the first support rod 5
  • One side is slidably connected with the second frame 17.
  • the slider 303 includes a second through hole b2 , and the second through hole b2 communicates with the first adjustment hole 301 .
  • the second adjusting rod 302 can be movably connected with the first adjusting hole 301 through the second through hole b2, the fifth groove 177, and the opening d2 in sequence.
  • the sliding block 303 is slidably connected to the second frame 17 .
  • the slider 303 is in direct contact with the second frame 17 , that is, the slider 303 and the frame 1 are slidably connected in a surface contact manner.
  • the side of the slider 303 close to the edge of the screen 2 is in direct contact with the side of the fifth groove 177 away from the edge of the screen 2 , thereby improving the tension of the first tensioning member 3 in the fifth groove. Sliding efficiency within 177.
  • the second frame 17 includes a fourth protrusion 178 , and the fourth protrusion 178 protrudes toward the direction that the second frame 17 is away from the edge of the curtain 2 , and the fifth groove 177 is arranged on the fourth Inside the protrusion 178 .
  • the slider 303 includes a second groove 3031 matching the shape of the fourth protrusion 178, the slider 303 is buckled on the fourth protrusion 178 through the second groove 3031, the slider 303 and the second frame 17 pass through the fourth The cooperation between the protrusion 178 and the second groove 3031 slides, so that the slider 303 slides along the length direction of the fifth groove 177 . Therefore, not only the sliding efficiency of the first tensioning member 3 in the fifth groove 177 is improved, but also the sliding stability of the slider 303 is effectively improved.
  • the slider 303 includes a fifth protrusion 3032 protruding toward the edge of the screen 2, at least part of the fifth protrusion 3032 is located in the fifth groove 177, And the side surface of the fifth protrusion 3032 along the protruding direction is in contact with the inner wall of the fifth groove 177 .
  • the slider 303 slides with the second frame 17 through the cooperation of the fifth protrusion 3032 and the fifth groove 177 , so that the slider 303 slides along the length direction of the fifth groove 177 . Therefore, the sliding stability of the slider 303 is effectively improved.
  • the projection screen 100 further includes a ball 6 disposed between the slider 303 and the second frame 17 , and the contact between the slider 303 and the second frame 17 changes from surface contact to point contact.
  • the sliding efficiency of the first tensioning member 3 in the fifth groove 177 is further improved.
  • at least one ball 6 is disposed between the side of the slider 303 close to the edge of the screen 2 and the side of the fifth groove 177 away from the edge of the screen 2 .
  • At least one of the side of the slider 303 close to the edge of the screen 2 and the side of the fifth groove 177 away from the edge of the screen 2 includes a seventh groove c2 that matches the shape of the ball 6, and a part of the ball 6 can be located in the seventh groove c2.
  • groove c2 In groove c2.
  • the ball 6 is disposed between the fourth protrusion 178 and the second groove 3031 in the slider 303 .
  • the side of the fourth protrusion 178 along the protrusion direction of the fourth protrusion 178 and the side along the direction perpendicular to the protrusion direction include the seventh groove c2, or the side of the second groove 3031 includes the seventh groove c2. Groove c2.
  • the ball 6 is disposed between the side of the fifth protrusion 3032 in the slider 303 and the side of the second frame 17 opposite to the side of the fifth protrusion 3032 .
  • the side of the fifth protrusion 3032 in the slider 303 includes the seventh groove c2, or, the side opposite to the side of the fifth protrusion 3032 in the second frame 17 includes the seventh groove c2.
  • the assembly method of the slider 303 and the second frame 17 in the above situations can refer to the above-mentioned assembly method of the corresponding slider 303 and the second frame 17 when the ball 6 is not provided.
  • the first tensioning member 3 further includes a first magnet 304 and a second magnet 305 .
  • the first magnet 304 is disposed on a side of the second frame 17 away from the first support rod 5
  • the second magnet 305 is disposed on a side of the slider 303 close to the first support rod 5 .
  • the magnetic properties of the first magnet 304 and the second magnet 305 repel each other.
  • the first tensioning member 3 can tighten the screen 2 in the length direction of the first frame 16 .
  • the number of the first magnets 304 is two.
  • the first magnet 304 includes two bar magnets 3041 located on both sides of the fifth groove 177 , and the bar magnets 3041 are fixedly connected to the side of the second frame 17 away from the first support rod 5 .
  • the first magnet 304 and the second magnet 305 repel each other magnetically, the side of the slider 303 close to the first support rod 5 is not in contact with the side of the fifth groove 177 away from the first support rod 5, so that the slider 303 and the first support rod 5 are not in contact.
  • There is air friction between the two frames 17 Therefore, the sliding effect between the slider 303 and the second frame 17 is better, which further improves the sliding effect of the first tensioning member 3 in the fifth groove 177 .
  • the number of the first magnet 304 is one.
  • the first magnet 304 is ring-shaped, which is sheathed on the second adjusting rod 302 and is slidably connected to the side of the second frame 17 away from the first supporting rod 5 .
  • the second adjusting rod 302 slides in the fifth groove 177 , the first magnet 304 slides along the length direction of the second frame 17 driven by the second adjusting rod 302 .
  • the projection screen 100 further includes a second support rod 7 , and the second support rod 7 is connected to the edge of the screen 2 along the length direction of the first frame 16 .
  • the second tension member 4 includes a second adjustment hole 404 and a third adjustment rod 405 , and the second adjustment hole 404 is located on the second support rod 7 . At least part of the third adjusting rod 405 is located in the second adjusting hole 404 , the length of the third adjusting rod 405 in the second adjusting hole 404 can be adjusted, and the third adjusting rod 405 is movably connected with the second adjusting hole 404 . An end of the third adjusting rod 405 away from the second adjusting hole 404 is fixed on the first frame 16 .
  • the process of adjusting the tension of the curtain 2 in the length direction of the second frame 17 by using the second support rod 7, the second adjustment hole 404 and the third adjustment rod 405 can refer to the above-mentioned first support rod 5 and the first adjustment respectively.
  • the description of the hole 301 and the second adjusting rod 302 will not be repeated here.
  • the projection screen 100 further includes a fixing clip 8 made of elastic material.
  • the fixing clip 8 can be buckled on the third sub-frame 175 and the fourth sub-frame 176, so that the The third sub-frame 175 and the fourth sub-frame 176 are restricted in a folded state to ensure that the projection screen 100 will not unfold during transportation.
  • the projection screen 100 further includes a restriction 9 .
  • the limiting member 9 is detachably fixedly connected to at least one of the third sub-frame 175 and the fourth sub-frame 176, and the limiting member 9 is used to limit the third sub-frame 175 and the fourth sub-frame 176 to a coplanar position, so as to Frame 1 is constrained in the expanded state.
  • the limiting member 9 includes a fixed beam 901 , and the fixed beam 901 is detachably fixedly connected to the third sub-frame 175 and the fourth sub-frame 176 respectively.
  • the third sub-frame 175 and the fourth sub-frame 176 are rotated to the coplanar position, they can be fixedly connected to the third sub-frame 175 and the fourth sub-frame 176 respectively through the fixing beam 901, so as to prevent the third sub-frame 175 and the fourth sub-frame from The frame 176 is relatively rotated.
  • the fixed beam 901 is respectively fixedly connected to the third sub-frame 175 and the fourth sub-frame 176 through screws f1, or fixedly connected through other methods.
  • the third sub-frame 175 and the fourth sub-frame 176 can rotate around the rotation axis 1013 of the hinge 101 , so that the frame 1 can be folded.
  • the third sub-frame 175 and the fourth sub-frame 176 include an eighth groove f2.
  • the fixed beam 901 is fixedly connected to the third sub-frame 175 and the fourth sub-frame 176 respectively, the fixed beam 901 is respectively Confined in the eighth groove f2 of the third sub-frame 175 and the eighth groove f2 of the fourth sub-frame 176 to avoid unevenness of the edge of the frame 1 .
  • the fixed beam 901 is detachably fixedly connected to one of the third sub-frame 175 and the fourth sub-frame 176 .
  • the difference from the above situation is that when the frame 1 needs to be folded , first remove one end of the fixed beam 901 from the third sub-frame 175, keep the other end of the fixed beam 901 fixedly connected to the fourth sub-frame 176, or disassemble one end of the fixed beam 901 from the fourth sub-frame 176 , keep the other end of the fixed beam 901 fixedly connected to the third sub-frame 175 . Then the third sub-frame 175 and the fourth sub-frame 176 are rotated around the rotation axis 1013 of the hinge 101 , that is, the frame 1 can be folded.
  • the restricting elements 9 in the above multiple situations can be set in one projection screen 100 at the same time. In this way, unevenness at the edge of the frame 1 can be effectively avoided, and the connection rigidity between the third sub-frame 175 and the fourth sub-frame 176 is better.
  • the folding and unfolding process of the projection screen 100 is illustrated below with an example.
  • the limiting member 9 fixing the third sub-frame 175 and the fourth sub-frame 176 is disassembled from the frame 1 .
  • the second tensioning member 4 is used to adjust the screen 2 to be in a relaxed state in the length direction of the second frame 17 , and at the same time, the screen 2 drives the first tensioning member 3 to slide on the second frame 17 .
  • the third sub-frame 175 and the fourth sub-frame 176 are relatively rotated around the rotation axis 1013 of the hinge 101 , so that the third sub-frame 175 and the fourth sub-frame 176 are stacked and placed in a folded state.
  • the third sub-frame 175 and the fourth sub-frame 176 are rotated around the rotation axis 1013 of the hinge 101 to a coplanar position. Then, the third sub-frame 175 and the fourth sub-frame 176 are fixed by the limiting member 9 . Afterwards, utilize the first tension member 3 to adjust the screen 2 to be in tension in the length direction of the first frame 16, and utilize the second tension member 4 to adjust the screen 2 to be in tension in the length direction of the second frame 17. In this way, better flatness of the screen 2 can be ensured, thereby ensuring normal use of the projection screen 100 .
  • the optical film 21 includes a surface layer 215, a colored layer 217, a diffusion layer 211, a Fresnel lens layer 212, and a reflective layer 213 that are sequentially stacked, and the diffusion layer 211 is distributed with Diffusion particles 214 .
  • the light emitted by the projector first passes through the surface layer 215', then enters the colored layer 217', and then enters the diffusion layer 211'. direction scattering, and then the light enters the Fresnel lens layer 212', and then is reflected by the reflective layer 213', passes through the Fresnel lens layer 212', the diffusion layer 211' and the colored layer 217' again, and finally exits from the surface layer 215'.
  • the light emitted by the optical engine has greater coherence, although the light will be diffused by the diffusion particles 214' when passing through the diffusion layer 211', the coherence of the light diffused by the diffusion layer 211' and reflected by the reflection layer 213' is still the same. Larger, more serious speckle will still appear on the projection screen.
  • the reflective layer 213 includes a reflective surface, and the reflective surface is disposed on a side of the reflective layer 213 close to the Fresnel lens layer 212 .
  • the Fresnel lens layer 212 includes a first surface 212A and a second surface 212B, the first surface 212A is arranged on the side of the Fresnel lens layer 212 close to the reflective layer 213, and the second surface 212B is arranged on the side of the Fresnel lens layer 212 close to One side of the diffusion layer 211.
  • At least one of the first surface 212A and the second surface 212B is an atomized surface.
  • the atomized surface is a surface that has been atomized and has a certain haze value, which can reduce the probability of specular reflection of light.
  • the Fresnel lens layer 212 includes a plurality of first surfaces 212A arranged in the vertical direction, and the first surface 212A is away from the second surface from top to bottom.
  • the included angle ⁇ between each first surface 212A and a plane perpendicular to the up-down direction may be the same, or gradually increase from top to bottom.
  • the Fresnel lens layer 212 is made of UV glue (Ultraviolet Rays, shadowless glue) or thermosetting glue.
  • the reflective layer 213 is a metal layer coated on the Fresnel lens layer 212, the part of the metal layer that is attached to the first surface 212A forms a reflective surface, and the material of the metal layer is a reflective material.
  • the reflective material includes at least one of aluminum and silver, such as aluminum, silver, or a combination of aluminum and silver.
  • the reflective layer 213 is made of aluminum particles with a diameter of 5um ⁇ 20um.
  • the aluminum particles with a diameter within this range due to their small diameter, will form a dense reflective surface after the reflective layer 213 is formed.
  • the inclination angle of the first surface 212A does not reflect the light in various directions due to the larger aluminum particles, but can be emitted in a predetermined direction, thereby avoiding the waste of light energy.
  • the reflective layer 213 can be made very thin, thereby saving the consumption of aluminum material and saving the production cost.
  • the reflective layer 213 is made of scaly aluminum powder.
  • the scaly aluminum powder has a circular flake structure, and its diameter-to-thickness ratio (the ratio of diameter to thickness) is relatively large, such as (40:1) to (100:1).
  • the combination of scaly aluminum powder within this range The ability is strong, and the probability of aluminum powder falling off in the reflective layer 213 can be reduced.
  • the first surface 212A is an atomized surface.
  • the light entering the optical film 21 is firstly scattered by the diffusing particles 214 and then scattered by the first surface 212A.
  • the coherence of the scattered light will be reduced, so that the degree of interference of the light hitting the surface of the projection screen will be reduced, thereby reducing the severity of speckles appearing on the surface of the projection screen.
  • the diffusion particles 214 are made of polymethyl methacrylate (PMMA).
  • the second surface 212B is an atomized surface, which can also achieve the above effects.
  • both the first surface 212A and the second surface 212B are atomized surfaces.
  • the light passes through the Fresnel lens layer 212, it will pass through the diffusion of the above two surfaces, so that the degree of diffusion is relatively large, and the coherence between the light is further reduced, so that the degree of interference of the light on the projection screen is reduced, and the projection screen
  • the severity of the speckle that appears on the surface is also correspondingly reduced.
  • first surface 212A is coated with diffusing particles 214 .
  • the first surface 212A coated with diffusing particles 214 forms an atomized surface.
  • the light after scattering is less coherent than the light before scattering, so that the severity of speckle appearing on the projection screen 100 is reduced.
  • the viewing angle of the projection screen 100 will also increase.
  • diffusion particles 214 are distributed inside the Fresnel lens layer 212 , which can also achieve the above effects.
  • the optical film 21 further includes a plurality of seventh protrusions 218, and the plurality of seventh protrusions 218 are disposed on the first surface 212A and face toward the side close to the reflective layer 213. raised.
  • the seventh protrusion 218 can transmit light and is configured to increase the transmittance of the first surface 212A. Since the first surface 212A is provided with a plurality of seventh protrusions 218, the first surface 212A is an uneven surface, the probability of specular reflection of light passing through the first surface 212A is reduced, and more light passes through the first surface 212A. Moreover, when the light passes through the seventh protrusion 218 on the first surface 212A, the light will be scattered. Therefore, the coherence between light rays is further reduced, thereby reducing the severity of speckles appearing on the projection screen 100 .
  • the plurality of seventh protrusions 218 includes at least one of a moth-eye structure and a micro lens.
  • the light passes through the above two structures, it will diffuse and scatters in different directions, so that the degree of light diffusion is relatively large.
  • the plurality of seventh protrusions 218 include microlenses, as shown in FIG. 42, the shape of the microlenses is hemispherical.
  • a hemispherical microlens consists of a convex curved surface that spreads light as it passes through it. The diffused light, due to the increased degree of diffusion, will eventually reduce the severity of the speckle formed on the surface of the projection screen.
  • microlenses can also be formed integrally with the Fresnel lens layer 212, and the surface of the microlenses can be roughened, so as to further expand the diffusion of light and further reduce the severity of speckles appearing on the projection screen.
  • the seventh protrusion 218 includes a moth-eye structure.
  • the moth-eye structure has the function of reducing the reflectivity, so that more light can pass through the first surface 212A, and can also diffuse the light.
  • the haze value of the first surface 212A is 85%-95%.
  • the probability of specular reflection of light on the first surface 212A is low, so that the proportion of light diffusion is high.
  • the surface layer 215 is used to protect the projection screen 100 .
  • the surface layer 215 is made of flexible material, such as UV glue. Due to the flexibility of UV glue, it can be curled.
  • the optical film 21 further includes a substrate layer 216 disposed between the surface layer 215 and the diffusion layer 211 .
  • the substrate layer 216 can serve as a base for making the surface layer 215 .
  • the surface layer 215 is made based on the surface of the substrate layer 216 away from the diffusion layer 211 .
  • the substrate layer 216 since the substrate layer 216 is provided, the optical path of the light inside the optical film 21 is increased, and the degree of diffusion of the light is further increased, thereby further reducing the severity of light spots on the projection screen 100 .
  • the substrate layer 216 is made of a flexible material, for example, polyethylene terephthalate (Polyethylene Terephthalate, PET), thermoplastic polyurethane elastomer rubber (Thermoplastic Polyurethanes, TPU), styrene-based thermoplastic elastomer ( Styrenic Block Copolymers, SBC, also known as styrene-based block copolymers). Both can make the substrate layer 216 flexible and rollable.
  • the diffusion layer 211 can also be made of flexible materials, for example, the diffusion layer 211 is made of PET material, so that the diffusion layer 211 can also be curled.
  • the colored layer 217 is disposed between the substrate layer 216 and the diffusion layer 211 .
  • Dark dyes are distributed in the colored layer 217 to increase the contrast of the projection screen 100 .
  • the colored layer 217 is an optically transparent glue, which can be used to bond the substrate layer 216 and the diffusion layer 211 .
  • Dark dyes are generally organic dyes, and azo dyes, phthalocyanine dyes, etc. can be used.
  • a dark dye may also be added to the surface layer 215 , the diffusion layer 211 or the substrate layer 216 , and the same effect can also be achieved.
  • the Fresnel lens layer 212 provided by some embodiments of the present disclosure can be applied to any projection screen with a Fresnel lens layer, not limited to the projection screen provided by some embodiments of the present disclosure, some embodiments of the present disclosure
  • the construction of the projection screen in is given as an example only.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Overhead Projectors And Projection Screens (AREA)

Abstract

一种投影装置，包括投影屏幕，投影屏幕包括折叠机构、框架和幕布，折叠机构包括两个相对设置的第一边框，框架包括两个相对设置的第二边框，幕布相对的第一侧边、第二侧边分别与第二边框固定连接，相对的第三侧边、第四侧边分别与第一边框固定连接，第一边框与第二边框可拆卸地连接，第一边框能够发生卷曲，以带动幕布卷曲；投影屏幕还可包括折叠机构、框架和幕布，框架包括两个相对设置的第一边框和两个相对设置的第二边框；第二边框包括第三子边框和第四子边框；折叠机构包括铰链，铰链带动第三子边框和第四子边框绕旋转轴转动；幕布的边缘翻折以包裹框架的边缘；第一拉紧件和第二拉紧件设置于框架远离幕布的一侧，且一端固定在幕布的边缘，第一拉紧件的另一端与第二边框滑动连接；第二拉紧件的另一端固定在第一边框上；第二拉紧件被配置为带动幕布沿第二边框的长度方向移动，以使第一拉紧件在幕布的带动下，在第二边框上滑动。

Description

投影装置
本申请要求于2021年09月27日提交的、申请号为202111135712.0的中国专利申请的优先权，于2021年09月26日提交的、申请号为202111131292.9的中国专利申请的优先权，以及于2021年10月12日提交的、申请号为202111188247.7的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本公开涉及投影技术领域，尤其涉及一种投影装置。
背景技术
随着科技的不断发展，投影装置越来越多的应用于消费者的工作和生活中。目前，投影装置主要包括光学引擎和投影屏幕。光学引擎的出光口朝向投影屏幕，以出射光束至投影屏幕，投影屏幕用于接收该光束，以实现画面的显示。
发明内容
一方面，提供一种投影装置，所述投影装置包括投影屏幕和光学引擎。所述投影屏幕被配置为显示投影画面，所述投影屏幕包括折叠机构、框架和幕布。所述折叠机构包括两个相对设置的第一边框。所述框架包括两个相对设置的第二边框。所述幕布具有相对的第一侧边、第二侧边和相对的第三侧边、第四侧边；所述第一侧边和所述第二侧边分别与所述两个第二边框固定连接，所述第三侧边和所述第四侧边分别与所述两个第一边框固定连接。所述两个第一边框的各自的两端分别与所述两个第二边框的各自的两端可拆卸地连接，且所述两个第一边框与所述两个第二边框围成所述框架。所述两个第一边框被配置为能够发生卷曲，以使所述两个第一边框能够带动所述幕布卷曲。所述光学引擎被配置为将光束出射至所述投影屏幕。
另一方面，提供一种投影装置，所述投影装置包括投影屏幕和光学引擎。所述投影屏幕被配置为显示投影画面，所述投影屏幕包括框架、折叠机构、幕布、第一拉紧件和第二拉紧件。所述框架包括两个相对设置的第一边框和两个相对设置的第二边框；所述第二边框包括第三子边框和第四子边框。所述折叠机构包括铰链，所述铰链包括旋转轴，所述旋转轴的方向与所述第一边框的长度方向平行，且与所述第二边框的长度方向垂直；所述铰链被配置为带动所述第三子边框和第四子边框绕所述旋转轴转动。所述幕布与所述框架固定连接，所述幕布的边缘翻折以包裹所述框架的边缘。所述第一拉紧件设置于所述框架远离所述幕布的一侧，且所述第一拉紧件的一端固定在所述幕布的所述边缘，所述第一拉紧件的另一端与所述第二边框滑动连接。所述第二拉紧件设置于所述框架远离所述幕布的一侧，且所述第二拉紧件的一端固定在所述幕布的所述边缘，所述第二拉紧件的另一端固定在所述第一边框上；所述第二拉紧件被配置为带动所述幕布沿所述第二边框的长度方向移动，以使所述第一拉紧件在所述幕布的带动下，在所述第二边框上滑动。所述光学引擎被配置为将光束出射至所述投影屏幕。
附图说明
为了更清楚地说明本公开中的技术方案，下面将对本公开一些实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例的附图，对于本领域普通技术人员来讲，还可以根据这些附图获得其他的附图。此外，以下描述中的附图可以视作示意图，并非对本公开实施例所涉及的产品的实际尺寸、方法的实际流程、信号的实际时序等的限制。
图1是根据本公开一些实施例提供的一种投影装置的使用状态示意图；
图2是根据本公开一些实施例提供的一种投影屏幕的正视图；
图3是图2示出的投影屏幕的爆炸结构图；
图4是根据本公开一些实施例提供的一种投影屏幕卷曲后的效果图；
图5是根据本公开一些实施例提供的一种第一边框的侧视图；
图6是根据本公开一些实施例提供的一种第一边框的正视图；
图7是图6示出的第一边框中的第一部分进行形变后的效果图；
图8是根据本公开一些实施例提供的又一种投影屏幕的结构图；
图9是图8中圈A’处的局部放大图；
图10是图8中圈A’处的局部放大的爆炸结构图；
图11是图8中圈B’处的局部放大图；
图12是根据本公开一些实施例提供的又一种投影屏幕的结构图；
图13是图12中圈C’处的局部放大图；
图14是根据本公开一些实施例提供的一种悬挂部悬挂投影屏幕的效果图；
图15是根据本公开一些实施例提供的另一种第一边框的结构图；
图16是相关技术提供的一种可折叠的投影屏幕的结构图；
图17是根据本公开一些实施例提供的一种投影屏幕处于不同状时的效果图；
图18是根据本公开一些实施例提供的一种幕布的结构图；
图19是图18示出的幕布的爆炸图；
图20是根据本公开一些实施例提供的一种铰链的结构图；
图21是根据本公开一些实施例提供的一种幕布、第一拉紧件和第二边框的连接结构的局部放大图；
图22是根据本公开一些实施例提供的一种幕布、第二拉紧件和第一边框之间连接关系的局部放大图；
图23是根据本公开一些实施例提供的另一种投影屏幕的结构图；
图24是图23中圈D’处的局部放大图；
图25是根据本公开一些实施例提供的一种滑块与第二边框的连接结构图；
图26是根据本公开一些实施例提供的另一种滑块与第二边框的连接结构图；
图27是根据本公开一些实施例提供的又一种滑块与第二边框的连接结构图；
图28是根据本公开一些实施例提供的再一种滑块与第二边框的连接结构图；
图29是根据本公开一些实施例提供的又一种滑块与第二边框的连接结构图；
图30是根据本公开一些实施例提供的第一磁体与第二调节杆的连接结构图；
图31是根据本公开另一些实施例提供的第一磁体与第二调节杆的连接结构图；
图32是根据本公开一些实施例提供的再一种投影屏幕的结构图；
图33是根据本公开另一些实施例提供的一种投影屏幕的结构图；
图34是根据本公开一些实施例提供的一种框架的部分结构图；
图35是根据本公开一些实施例提供的另一种框架的部分结构图；
图36是现有技术中的一种具有微结构的光学膜片的结构图；
图37是根据本公开一些实施例提供的一种光学膜片的结构图；
图38是根据本公开一些实施例提供的一种反射层的结构图；
图39是根据本公开一些实施例提供的另一种反射层的结构图；
图40是根据本公开一些实施例提供的第一表面涂布有扩散粒子的结构图；
图41是根据本公开一些实施例提供的菲涅尔透镜层内分布有扩散粒子的结构图；
图42是根据本公开一些实施例提供的第一表面设有第七凸起时的结构图。
具体实施方式
下面将结合附图，对本公开一些实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开一部分实施例，而不是全部的实施例。基于本公开所提供的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本公开保护的范围。
以下，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。
在描述一些实施例时，可能使用了“连接”及其衍伸的表达。术语“连接”应做广义理解，例如，“连接”可以是固定连接，也可以是可拆卸连接，或成一体；可以是直接相连，也可以通过中间媒介间接相连。
本文中“适用于”或“被配置为”的使用意味着开放和包容性的语言，其不排除适用 于或被配置为执行额外任务或步骤的设备。
本公开一些实施例提供一种投影装置1000。如图1所示，投影装置1000包括投影屏幕100和光学引擎200。投影装置1000在使用时，光学引擎200放置在投影屏幕100的前下方，观众300位于投影屏幕100的前方并看向投影屏幕100。光学引擎200发出的入射光线2A照向投影屏幕100，入射光线2A在投影屏幕100中成像，并经过投影屏幕100的反射后最终形成出射光线2B照向观众300。
如图2至图3所示，投影屏幕100包括框架1和幕布2。幕布2设置于框架1的正面，框架1的正面即为面向观众300一面。相关技术中，投影屏幕的尺寸越来越大，所占的空间较大。在入户时，难以通过电梯运输，从而不可避免地会增加投影屏幕的运输难度。为了保证大尺寸投影屏幕的正常搬运及入户，在相关技术中，一般采用如下四种方式解决此问题。
第一种方式，通过人力将完整的投影屏幕从楼梯搬运入户；此种方式效率低，投影屏幕容易在搬运的过程中受到磕碰。第二种方式，利用吊车，将完整的投影屏幕通过窗户吊装入户；此种方式仅适用于楼层较低的情况，若投影屏幕过大可能还需要拆卸窗户，成本较高。第三种方式，将完整的投影屏幕分成散件后搬运，待搬运入户之后再拼接组装得到完整的投影屏幕。然而，由于在投影屏幕入户后需要对散件重新组装，降低了投影屏幕的组装效率。第四种方式，将投影屏幕制备成可折叠的投影屏幕，如图16所示，框架1’可折叠。为了避免幕布2’展开后出现折痕，投影屏幕通常需要采用外折的方式进行折叠，即幕布2’位于折叠后的投影屏幕的最外侧。然而，在投影屏幕100’的折叠过程中，幕布2’会相对框架1’产生滑移。在折叠的投影屏幕100’重新展开过程中，在幕布2’折叠位置处极易产生鼓包3’，导致幕布2’的平坦度较差，进而导致幕布2’上显示的投影画面的显示效果较差。
在一些实施例中，如图3所示，投影屏幕100还包括折叠机构10，折叠机构10包括两个相对设置的第一边框16。框架1包括两个相对设置的第二边框17。第一边框16的端部与第二边框17的端部可拆卸地连接。第一边框16的两端分别与两个第二边框17的端部连接，第二边框17的两端分别与两个第一边框16的端部连接，以围成框架1。示例地，第一边框16为框架1的短边所在方向上的边框，投影屏幕100中的第二边框17为框架1的长边所在方向上的边框。
幕布2包括四个侧边，幕布2的四个侧边分别与第一边框16和第二边框17固定连接。四个侧边包括相对的第一侧边A和第二侧边B，以及相对的第三侧边C和第四侧边D，四个侧边包裹框架1。示例地，第一侧边A和第二侧边B分别与第二边框17固定连接(如粘接)，第三侧边C和第四侧边D分别与第一边框16固定连接(如粘接)。第一边框16能够在垂直于幕布2的方向上进行形变，以使形变后的第一边框16能够与幕布2以第二边框17为轴同时发生卷曲。
示例地，在将第一边框16的端部从第二边框17的端部拆卸下来后，可以对第一边框16施加沿垂直于柔性幕布2的方向的作用力，使得第一边框16可以在垂直于幕布2的方向上发生形变，从而可以在垂直于第一边框16的长度方向上卷曲幕布2。如图4所示，卷曲后的投影屏幕100的整体尺寸较小，进而能够简化投影屏幕100的搬运难度。
在一些实施例中，如图5所示，第一边框16包括第一部分161和第二部分162。第一部分161和第二部分162分别包括弯曲部S以及位于弯曲部S两侧的平面部P。第一部分161的平面部P和第二部分162的平面部P连接，第一部分161的弯曲部S和第二部分162的弯曲部S组成空腔a1。示例地，采用压力机将第一部分161的平面部P和第二部分162的平面部P进行压接处理，使得第一部分161的平面部P和第二部分162的平面部P连接在一起。
示例地，第一边框16的第一部分161的弯曲部S包括平面T，平面T与幕布2的第三侧边C和第四侧边D连接。这样，可以有效防止幕布2中与第一边框16连接的区域出现鼓包的现象，且通过该平面T可以提高幕布2与第一部分161之间的连接面积，保证第一边框16与幕布2之间较高的连接牢固性。
如图9和图11所示，投影屏幕100还包括第一拉紧件3和第二拉紧件4，第一拉紧件3和第二拉紧件4设置于空腔a1内。在第一边框16的端部与第二边框17的端部连接形成框架1后，由于连接第二边框17和第一边框16的第二拉紧件4的阻碍(见图9)，第一边框16即使受到了沿垂直于幕布2的方向的作用力，或者，沿其他方向的作用力，该第一边框16仍然不易发生形变。如此，由第一边框16和第二边框17组成的框架1，能够对幕布2进行有效的支撑，保证幕布2上能够呈现出投影画面。
在一些实施例中，如图6至图7所示，第一边框16具有半刚性。即第一边框16在与幕布2平行的方向(例如X轴方向或Y轴方向)上是刚性的，在受到与幕布2平行的方向上的作用力时第一边框16不易发生变形，因此，通过第一边框16能够对幕布2进行有效的支撑。而在垂直于幕布2的方向上第一边框16是非刚性的，其具有弹性。如此，在将第二拉紧件4和第一拉紧件3从空腔a1中拆卸下来后，第一部分161的弯曲部S在受到垂直于幕布2的方向上的作用力时可以发生形变，以与第二部分162的弯曲部S贴接。在此情况下，第一边框16在垂直于幕布2的方向上的厚度较小，由此，在以两个第二边框17中的一个为卷曲轴卷曲幕布2时，可以进一步地降低幕布2卷曲后的体积。
在一些实施例中，在对变形后的第一部分161施加反作用力后，即可让第一部分161恢复为未变形前的状态，使得第一部分161与第二部分162之间能够围成空腔a1。示例地，第一部分161和第二部分162为弹性片，第一部分161与第二部分162在变形后能够卷曲、未变形前能够起到支撑作用。
在一些实施例中，如图9至图10所示，第二拉紧件4用于连接第一边框16的端部和第二边框17的端部。如此，第一边框16的端部通过第二拉紧件4与第二边框17的端部可实现可拆卸连接。第二拉紧件4被配置为通过第一边框16带动幕布2在第二边框17的长度方向(即第一侧边A的长度方向)上移动，以调整幕布2在第二边框17的长度方向上的拉紧度。
示例地，在投影屏幕100展开时，先通过第二拉紧件4连接第一边框16的端部与第二边框17的端部，再通过第二拉紧件4调整幕布2在第二边框17的长度方向上的拉紧度。在调节幕布2在第二边框17的长度方向上的拉紧度的过程中，第二拉紧件4带动第一边框16沿平行于第二边框17的长度方向、向远离幕布2中心的方向移动，进而第一边框16带动幕布2张紧。如此，可以在第二边框17的长度方向上将幕布2拉展，进而可以保证幕布2的平坦度较好。
在一些实施例中，如图9和图10所示，第二边框17包括第六凹槽171，以及与第六凹槽171连通的第一通孔172，第六凹槽171与第一通孔172设置于第二边框17的端部。第六凹槽171的长度方向、第一通孔172的贯穿方向均与第二边框17的长度方向平行。
在一些实施例中，第二拉紧件4包括第一连接件401、第一凸起402和第一调节杆403。第一连接件401位于空腔a1内，且第一连接件401与第一边框16的端部固定连接。示例地，如图10所示，第一连接件401与第一边框16的端部通过螺钉f1连接，也可以通过其他方式进行固定连接。第一凸起402设置于第六凹槽171内，且第一凸起402和第一连接件401固定连接。第一调节杆403穿过第一通孔172且与第一凸起402活动连接，第一凸起402能够在第一调节杆403的长度方向上移动。这样，在通过第二拉紧件4调节幕布2在第二边框17的长度方向上的拉紧度的过程中，第一调节杆403能够带动第一连接件401向远离幕布2中心的方向移动，进而第一连接件401能够带动第一边框16向远离幕布2中心的方向移动，第一边框16即可以带动幕布2使其处于张紧状态；或者，第一调节杆403能够带动第一连接件401向靠近幕布2中心的方向移动，进而第一连接件401能够带动第一边框16向靠近幕布2中心的方向移动，第一边框16即可以带动幕布2使其处于松弛状态。如此，可以实现第二拉紧件4对幕布2在平行于第二边框17的长度方向上的拉紧度的调整。
在一些实施例中，如图9所示，第二边框17还包括第六凸起b1，第六凸起b1位于第一通孔172内，第一调节杆403远离第一凸起402的一端与第六凸起b1抵接。这样，在采用第二拉紧件4将幕布2张紧后，能够防止幕布2在自身弹力的作用下带动第二拉紧件 4沿平行于第二边框17的长度方向、向靠近幕布2中心的方向移动。
示例地，第一凸起402包括螺纹孔，第一调节杆403为螺杆，第一凸起402中的螺纹孔包括内螺纹，第一调节杆403包括与螺纹孔的内螺纹相匹配的外螺纹。当第一调节杆403绕自身轴线进行不同方向的旋转时，第一调节杆403的外螺纹与螺纹孔内的内螺纹啮合，从而，第一凸起402带动第一连接件401向远离幕布2中心的方向移动，进而第一连接件401能够带动第一边框16向远离幕布2中心的方向移动；或者，第一凸起402带动第一连接件401向靠近幕布2中心的方向移动，进而第一连接件401能够带动第一边框16向靠近幕布2中心的方向移动。
在一些实施例中，如图8所示，第一边框16包括第一子边框100a和第二子边框100b。第一子边框100a包括第一端100a1和第二端100a2；第二子边框100b包括第一端100b1和第二端100b2。第一连接件401固定在第一子边框100a的第一端100a1和第二子边框100b的第一端100b1。示例地，如图10所示，第一连接件401与第一子边框100a的第一端100a1以及第二子边框100b的第一端100b1通过螺钉f1固定连接。
在一些实施例中，如图8和图11所示，第一拉紧件3分别与第一子边框100a第二端100a2和第二子边框100b的第二端100b2连接。第一拉紧件3被配置为调整幕布2在第一边框16的长度方向上的拉紧度，使幕布2在第一边框16的长度方向上处于张紧状态或松弛状态。
示例地，第一拉紧件3包括两个第二连接件31和弹性元件32。弹性元件32位于两个第二连接件31之间，两个第二连接件31位于空腔a1内，且分别固定在第一子边框100a的第二端100a2和第二子边框100b的第二端100b2。例如，两个第二连接件31分别与第一子边框100a的第二端100a2和第二子边框100b的第二端100b2通过螺钉固定连接。
示例地，在投影屏幕100展开时，在通过第一拉紧件3调节幕布2在第一边框16的长度方向上的拉紧度的过程中，将幕布2与第一边框16固定连接，第一拉紧件3中的两个第二连接件31分别与第一边框16中的第一子边框100a的第二端100a2和第二子边框100b的第二端100b2固定连接，弹性元件32对第一边框16产生指向第二边框17的作用力，两个第二连接件31带动第一边框16中的第一子边框100a和第二子边框100b在平行于第一边框16的长度方向上发生相对移动，进而第一边框16带动幕布2张紧。如此，可以在平行于第一边框16的长度方向上将幕布2拉展，进而可以保证幕布2的平坦度较好。
在一些实施例中，如图11所示，两个第二连接件31中的一个包括第二凸起311，另一个包括与第二凸起311的形状匹配的第一凹槽312以及第三凹槽313，且第二凸起311中的至少部分位于第一凹槽312内。第一凹槽312与第三凹槽313同轴设置。示例地，两个第二连接件31之间的弹性元件32为压缩弹簧，压缩弹簧套接在第二凸起311上，在第二凸起311与第一凹槽312组装配合后，压缩弹簧的两端分别与两个第二连接件31抵接，且压缩弹簧中的一部分位于第三凹槽313中。这样，压缩弹簧只能够在平行于第一边框16的方向上移动，在垂直于第一边框16的方向上不易发生晃动，从而能够使得第一子边框100a和第二子边框100b的连接稳定性较好。此外，弹性元件32还可以为弹片。
示例地，第一连接件401的形状、第二连接件31的形状与空腔a1的形状匹配，即第一连接件401的横截面的形状、第二连接件31的横截面的形状与空腔a1的横截面的形状相同。这样，第一连接件401和第二连接件31可填充在空腔a1内，使得在第一边框16的端部与第二边框17的端部连接后，第一边框16在垂直于幕布2的方向上的刚性增强，保证第一边框16能够对幕布2进行有效的支撑。投影屏幕100还包括密封元件，密封元件设置于第一连接件401和第二连接件31的侧壁上，以进一步提高对于空腔a1的密封性。
在一些实施例中，如图12所示，折叠机构10还包括位于两个第一边框16之间的第三边框18，第三边框18的端部与第二边框17可拆卸地连接，且第三边框18与幕布2固定连接(例如粘接)。这样，第三边框18和两个第一边框16对幕布2的支撑稳定性较好。第三边框18的结构可以参考上述第一边框16。
在一些实施例中，如图12和图13所示，框架1还包括支撑件19。支撑件19包括第三连接件191和第三凸起192。第三连接件191和第三凸起192固定连接，且第三连接件 191与第三边框18的端部固定连接。第三凸起192包括螺纹孔c1，且螺纹孔c1的长度方向与第二边框17的长度方向垂直。第二边框17包括第一开孔d1，螺钉f1穿过第一开孔d1与螺纹孔c1连接。如此，可以实现第三边框18的端部与第二边框17可拆卸连接。
在一些实施例中，如图14所示，第二边框17包括底板173和两个挂板174。底板173的端部通过第二拉紧件4与第一边框16的端部连接。两个挂板174分别与底板173的两侧固定连接。框架1还包括悬挂部20。悬挂部20包括卡钩201，卡钩201用于与两个挂板174中的至少一个卡接。这样，在悬挂部20固定在墙壁上后，可以通过卡钩201与至少一个挂板174卡接，以将投影屏幕100悬挂在墙壁上。这里，悬挂部20可以通过螺钉f1固定在墙壁上。
在又一些实施例中，如图15所示，第一边框16包括第三部分163，第三部分163包括第四凹槽1631，第四凹槽1631沿第三部分163的长度方向延伸。示例地，第三部分163为弹性片，例如第三部分163为金属弹性片。在采用第三部分163作为第一边框16时，将第二拉紧件4和第一拉紧件3设置第四凹槽1631中，且与第三部分163固定连接。在将第二拉紧件4和第一拉紧件3从第四凹槽1631中拆卸下来后，第三部分163在受到垂直于幕布2的方向上的作用力时，可以使第三部分163在垂直于幕布2的方向上发生形变。如此，可以在垂直于第一边框16的长度方向上卷曲幕布2，使得卷曲后的投影屏幕100的整体尺寸较小，进而能够简化投影屏幕100的搬运难度。而在第一边框16的端部与第二边框17的端部连接后，第一边框16不易发生变形，能够对幕布2进行有效的支撑。
图17至图35为根据本公开一些实施例的另一种投影屏幕。下面仅描述图17至图35所示的激光器与前述图2至图15所示的投影屏幕的不同之处，相同之处不再赘述。需要说明的是，在图17至图35中，对于与图2至图15所示的投影屏幕中相同的部分，使用与图2至图15示出的相同的附图标记。
在一些实施例中，如图17所示，第二边框17包括第三子边框175和第四子边框176。折叠机构10包括铰链101，如图20所示，铰链101包括第一合页1011、第二合页1012和旋转轴1013。铰链101被配置为带动第三子边框175和第四子边框176绕旋转轴1013进行转动。示例地，第一合页1011和第二合页1012通过旋转轴1013连接，以实现第一合页1011和第二合页1012的相对旋转。第一合页1011与第三子边框175固定连接，第二合页1012第四子边框176固定连接，进而实现第三子边框175和第四子边框176的相对旋转。
此外，第一合页1011和第二合页1012均包括凸起，凸起分别设置于第一合页1011和第二合页1012靠近旋转轴1013的一端的表面上，旋转轴1013穿过凸起，从而实现第一合页1011和第二合页1012的可旋转连接。当第一合页1011和第二合页1012旋转至共面位置时，第一合页1011靠近旋转轴1013的一端和第二合页1012靠近旋转轴1013的一端抵接，从而将第一合页1011和第二合页1012限制在同一平面内。
示例地，如图17所示，在通过铰链101让第三子边框175相对于第四子边框176转动至共面位置时，第三子边框175与第四子边框176能够组成第二边框17，此时，投影屏幕100处于展开状态；在通过铰链101让第三子边框175相对于第四子边框176转动至层叠位置时，第三子边框175与第四子边框176能够组成层叠设置的折叠框架，此时，投影屏幕100处于折叠状态。
在一些实施例中，如图18和图19所示，幕布2包括光学膜片21和柔性载体22。光学膜片21固定在柔性载体22的一侧，柔性载体22的另一侧贴合在框架1的正面，柔性载体22的边缘伸出光学膜片21的边缘，且柔性载体22伸出光学膜片21的部分翻折至框架1的背面，柔性载体22的边缘通过第一拉紧件3和第二拉紧件4限位在框架1的背面。光学膜片21用于接收光学引擎200出射的光束，以实现画面的显示。在另一些实施例中，光学膜片21通过粘接的方式固定在柔性载体22上。柔性载体22为柔性布，也可以为其他柔性件，只要能够任意弯折，且张紧后具有一定的平面度即可。并且，柔性载体22在光学膜片21所在平面上的投影覆盖光学膜片21或者覆盖光学膜片21的四条侧边，以保证柔性载体22的边缘伸出光学膜片21的四条侧边，进而能够在拉紧柔性载体22的同时 保证光学膜片21的平面度。
在一些实施例中，第一拉紧件3设置于框架1的背面，第一拉紧件3的一端固定在幕布2的第一侧边A或第二侧边B，第一拉紧件3的另一端与第二边框17滑动连接。第二边框17为框架1中垂直于铰链101的旋转轴1013的边框，即，第二边框17为框架1的长边所在的边框。
示例地，在第三子边框175与第四子边框176处于共面位置时，二者平行排布，且能够组成第二边框17。第一拉紧件3用于调整在平行于铰链101的旋转轴1013的方向(即，第一边框16的长度方向)上的拉紧度，使幕布2在第一边框16的长度方向上处于张紧状态或松弛状态。示例地，如图21所示，通过第一拉紧件3能够调整幕布2的边缘与第二边框17之间的距离，以调整幕布2在第一边框16的长度方向上的拉紧度。由于第一拉紧件3与第二边框17是滑动连接的，因此，第一拉紧件3能够在第二边框17上沿第二边框17的长度方向滑动。
在一些实施例中，第二拉紧件4设置于框架1的背面，第二拉紧件4的一端固定在幕布2的第三侧边C或第四侧边D，第二拉紧件4的另一端固定在第一边框16上。第一边框16为框架1中平行于铰链101的旋转轴1013的边框，即，第一边框16为框架1的短边所在的边框。
在一些实施例中，如图17所示，第一边框16分别与第三子边框175和第四子边框176的一端连接，且与第二边框17的长度方向垂直。示例地，如图22所示，通过第二拉紧件4能够调整幕布2的边缘与第一边框16之间的距离，以调整幕布2在垂直于铰链101的旋转轴1013的方向(即，第二边框17的长度方向)上的拉紧度。例如，第二拉紧件4被配置为带动幕布2在第二边框17的长度方向上移动，以使得第一拉紧件3在幕布2的带动下在第二边框17上滑动。
示例地，在投影屏幕100展开时，先通过第一拉紧件3调节幕布2在第一边框16的长度方向上的拉紧度，再通过第二拉紧件4调节幕布2在第二边框17的长度方向上的拉紧度。由于第一拉紧件3与第二边框17是滑动连接的，因此，在通过第二拉紧件4调节幕布2在第二边框17的长度方向上的拉紧度的过程中，第二拉紧件4先带动幕布2在第二边框17的长度方向上移动，之后，在幕布2的带动下，第一拉紧件3在第二边框17上滑动。如此，可以在第二边框17的长度方向上将幕布2拉展，有效的降低了幕布2的在折叠位置处产生鼓包的概率，进而保证幕布2具有较好的平坦度。
在一些实施例中，如图23和图24所示，投影屏幕100还包括第一支撑杆5，第一支撑杆5在第二边框17的长度方向上与幕布2的边缘连接。示例地，幕布2还包括容置部23，容置部23设置于幕布2的边缘，即，柔性载体22的边缘弯折到框架1的背面以形成容置部23。容置部23包括开口d2。第一支撑杆5设置于第二边框17或第一边框16对应位置处的容置部23内。第二边框17还包括第五凹槽177，第五凹槽177沿第二边框17的长度方向延伸。
在一些实施例中，如图24所示，第一拉紧件3包括第一调节孔301和第二调节杆302，第一调节孔301设置于第一支撑杆5上，第二调节杆302的至少部分位于第一调节孔301内，且与第一调节孔301活动连接。示例地，第二调节杆302依次穿过第五凹槽177和容置部23上的开口d2与第一调节孔301活动连接，且第二调节杆302远离第一调节孔301的一端与第二边框17滑动连接。第二调节杆302在第一调节孔301内的长度可调节，且第二调节杆302能够在第五凹槽177内滑动。
示例地，第一调节孔301为具有内螺纹的螺纹孔，第二调节杆302为螺杆，且第二调节杆302具有与第一调节孔301的内螺纹相匹配的外螺纹。当第二调节杆302绕自身轴线进行不同方向的旋转时，第二调节杆302上的外螺纹与第一调节孔301内的内螺纹啮合，使得第一支撑杆5沿靠近第五凹槽177的方向移动，或者，使得第一支撑杆5沿远离第五凹槽177的方向移动。进而，第一支撑杆5带动幕布2的边缘沿靠近第五凹槽177的方向移动，或者，第一支撑杆5带动幕布2的边缘沿远离第五凹槽177的方向移动。由此，可以调整幕布2在第一边框16的长度方向上的拉紧度。即，当第一支撑杆5沿靠近第五凹 槽177的方向上移动，以带动幕布2的边缘沿靠近第五凹槽177的方向移动时，使得幕布2在第一边框16的长度方向上处于张紧状态；当第一支撑杆5沿远离第五凹槽177的方向上移动，以带动幕布2的边缘沿远离第五凹槽177的方向移动时，使得幕布2在第一边框16的长度方向上处于松弛状态。
在一些实施例中，第一拉紧件3还包括滑块303，滑块303与第二调节杆302远离第一调节孔301的一端连接，且位于第五凹槽177远离第一支撑杆5的一侧，与第二边框17滑动连接。示例地，滑块303包括第二通孔b2，第二通孔b2与第一调节孔301连通。由此，第二调节杆302可以依次通过第二通孔b2、第五凹槽177、开口d2与第一调节孔301活动连接。
滑块303与第二边框17滑动连接的方式有多种。在一些实施例中，滑块303与第二边框17直接接触，即，滑块303与框架1采用面接触的方式进行滑动连接。示例地，如图24所示，滑块303的靠近幕布2边缘的侧面与第五凹槽177远离幕布2边缘的侧面直接接触，由此，提高了第一拉紧件3在第五凹槽177内的滑动效率。
又示例地，如图25所示，第二边框17包括第四凸起178，第四凸起178朝第二边框17远离幕布2的边缘的方向凸起，第五凹槽177设置于第四凸起178内。滑块303包括与第四凸起178的形状匹配的第二凹槽3031，滑块303通过第二凹槽3031扣置在第四凸起178上，滑块303与第二边框17通过第四凸起178和第二凹槽3031的配合进行滑动，使得滑块303沿第五凹槽177的长度方向进行滑动。因此，不仅提高了第一拉紧件3在第五凹槽177内的滑动效率，且有效的提高了滑块303滑动的稳定性。
再示例地，如图26所示，滑块303包括第五凸起3032，第五凸起3032朝幕布2的边缘凸出，第五凸起3032中的至少部分位于第五凹槽177内，且第五凸起3032沿其凸出方向上的侧面与第五凹槽177的内壁接触。滑块303与第二边框17通过第五凸起3032和第五凹槽177的配合进行滑动，使得滑块303沿第五凹槽177的长度方向进行滑动。因此，有效地提高了滑块303滑动的稳定性。
在另一些实施例中，投影屏幕100还包括滚珠6，滚珠6设置于滑块303与第二边框17之间，滑块303与第二边框17之间的接触由面接触变为点接触。由此，进一步的提高了第一拉紧件3在第五凹槽177内滑动的效率。示例地，如图27所示，至少一个滚珠6设置于滑块303靠近幕布2的边缘的侧面与第五凹槽177远离幕布2边缘的侧面之间。例如，滑块303靠近幕布2边缘的侧面和第五凹槽177远离幕布2边缘的侧面中的至少一个侧面包括与滚珠6形状匹配的第七凹槽c2，滚珠6中的一部分可以位于第七凹槽c2内。
又示例地，如图28所示，滚珠6设置于第四凸起178和滑块303中的第二凹槽3031之间。例如，第四凸起178中沿第四凸起178凸起方向的侧面和沿与凸起方向垂直的方向上的侧面包括第七凹槽c2，或者，第二凹槽3031的侧面包括第七凹槽c2。
再示例地，如图29所示，滚珠6设置于滑块303中的第五凸起3032的侧面与第二边框17的与第五凸起3032的侧面相对的侧面之间。例如，滑块303中的第五凸起3032的侧面包括第七凹槽c2，或者，与第二边框17中和第五凸起3032的侧面相对的侧面包括第七凹槽c2。需要说明的是，当设置滚珠6时，以上多种情况中的滑块303和第二边框17的装配方式可以参考上述未设置滚珠6时相应的滑块303和第二边框17的装配方式。
在又一些实施例中，如图30所示，第一拉紧件3还包括第一磁体304和第二磁体305。第一磁体304设置于第二边框17远离第一支撑杆5的一侧，该第二磁体305设置于滑块303靠近第一支撑杆5的一侧。第一磁体304和第二磁体305的磁性相斥。由此，第一拉紧件3可以在第一边框16的长度方向上将幕布2拉紧。
示例地，第一磁体304的数量为两个。此时，第一磁体304包括位于第五凹槽177两侧的两个条形磁体3041，条形磁体3041与第二边框17远离第一支撑杆5的一侧固定连接。由于第一磁体304和第二磁体305磁性相斥，滑块303靠近第一支撑杆5的一侧与第五凹槽177远离第一支撑杆5的一侧不接触，使得滑块303与第二边框17之间为空气摩擦。因此，滑块303与第二边框17之间的滑动效果较好，进一步的提高了第一拉紧件3在第五凹槽177内的滑动效果。
又示例地，如图31所示，第一磁体304的数量为一个。此时，第一磁体304为环形，其套设在第二调节杆302上，并与第二边框17远离第一支撑杆5的一侧滑动连接。当第二调节杆302在第五凹槽177内滑动时，第一磁体304在第二调节杆302的带动下沿第二边框17的长度方向滑动。
在一些实施例中，如图32所示，投影屏幕100还包括第二支撑杆7，第二支撑杆7在第一边框16的长度方向上与幕布2的边缘连接。第二拉紧件4包括第二调节孔404和第三调节杆405，第二调节孔404位于第二支撑杆7上。第三调节杆405的至少部分位于第二调节孔404内，第三调节杆405在第二调节孔404内的长度可调节，且第三调节杆405与第二调节孔404活动连接。第三调节杆405远离第二调节孔404的一端固定在第一边框16上。利用第二支撑杆7、第二调节孔404和第三调节杆405调整幕布2在第二边框17的长度方向上的拉紧度的过程可分别参考上述对第一支撑杆5、第一调节孔301和第二调节杆302的描述，在此不再赘述。
在一些实施例中，如图17所示，投影屏幕100还包括固定夹8，固定夹8由弹性材料制成。这样，在第三子边框175和第四子边框176绕铰链101的旋转轴1013旋转至折叠状态后，可以将固定夹8卡扣在第三子边框175和第四子边框176上，以将第三子边框175和第四子边框176限制在折叠状态，保证在运输过程中投影屏幕100不会展开。
在一些实施例中，如图33所示，投影屏幕100还包括限制件9。限制件9与第三子边框175和第四子边框176中的至少一个可拆卸地固定连接，限制件9用于将第三子边框175和第四子边框176限制在共面位置，以将框架1限制在展开状态。
示例地，如图33所示，限制件9包括固定梁901，固定梁901分别与第三子边框175和第四子边框176可拆卸地固定连接。当第三子边框175与第四子边框176旋转至共面位置后，可以通过固定梁901分别与第三子边框175和第四子边框176固定连接，避免第三子边框175和第四子边框176发生相对转动。例如，将固定梁901分别与第三子边框175和第四子边框176通过螺钉f1进行固定连接，或通过其他方式进行固定连接。将固定梁901从第三子边框175和第四子边框176上拆卸下来后，第三子边框175和第四子边框176可绕铰链101的旋转轴1013转动，从而可实现框架1的折叠。
如图34所示，第三子边框175和第四子边框176包括第八凹槽f2，当固定梁901分别与第三子边框175和第四子边框176固定连接时，固定梁901被分别限制在第三子边框175的第八凹槽f2内和第四子边框176的第八凹槽f2内，以避免框架1的边缘出现高低不平的现象。
又示例地，如图35所示，固定梁901与第三子边框175和第四子边框176中的一个可拆卸地固定连接，与上述情况不同之处在于，当需要将框架1进行折叠时，先将固定梁901的一端从第三子边框175上拆卸，保持固定梁901的另一端与第四子边框176的固定连接，或者，将固定梁901的一端从第四子边框176上拆卸，保持固定梁901的另一端与第三子边框175的固定连接。再使第三子边框175和第四子边框176绕铰链101的旋转轴1013转动，即可以实现框架1的折叠。
上述多种情况中的限制件9可以同时设置在一个投影屏幕100中。这样，可以有效地避免框架1的边缘出现高低不平的现象，且使得第三子边框175与第四子边框176的连接刚性较好。
以下对投影屏幕100的折叠和展开过程进行举例说明。
在将投影屏幕100进行折叠时，首先，将固定第三子边框175和第四子边框176的限制件9从框架1上拆卸。然后，利用第二拉紧件4调整幕布2在第二边框17的长度方向上处于松弛状态，同时幕布2带动第一拉紧件3在第二边框17上滑动。之后，第三子边框175和第四子边框176绕铰链101的旋转轴1013进行相对旋转，以使得第三子边框175和第四子边框176层叠设置后处于折叠状态。
在将投影屏幕100进行展开时，首先，将第三子边框175和第四子边框176绕铰链101的旋转轴1013进行旋转至共面位置。然后，利用限制件9将第三子边框175和第四子边框176固定。之后，利用第一拉紧件3调整幕布2在第一边框16的长度方向上处于张紧 状态，利用第二拉紧件4调整幕布2在第二边框17的长度方向上处于张紧状态。这样，可以保证幕布2的平坦度较好，进而可以保证投影屏幕100的正常使用。
以上是对框架1的结构介绍，下面对光学膜片21的结构做进一步介绍。
在一些实施例中，如图37所示，光学膜片21包括依次层叠设置表面层215、着色层217、的扩散层211、菲涅尔透镜层212以及反射层213，扩散层211内分布有扩散粒子214。
在相关技术中，如图36所示，投影机射出的光线先经过表面层215’，然后进入着色层217’，接着进入扩散层211’，此时光线会被扩散粒子214’扩散，向各个方向散射，然后光线进入菲涅尔透镜层212’，接着经反射层213’反射后再次经过菲涅尔透镜层212’、扩散层211’以及着色层217’，最终从表面层215’射出。由于光学引擎发出的光线具有较大的相干性，尽管光线经过扩散层211’时会被扩散粒子214’扩散，但是，经扩散层211’扩散和反射层213’反射之后的光线的相干性还是较大，投影屏幕上还是会出现较为严重的散斑。
在一些实施例中，如图37所示，反射层213包括反射面，反射面设置于反射层213靠近菲涅尔透镜层212的一侧。菲涅尔透镜层212包括第一表面212A和第二表面212B，第一表面212A设置于菲涅尔透镜层212靠近反射层213的一侧，第二表面212B设置于菲涅尔透镜层212靠近扩散层211的一侧。第一表面212A和第二表面212B中的至少一个为雾化表面。雾化表面为经过雾化处理的表面，具有一定的雾度值，能够降低光线发生镜面反射的概率。
这样，在入射至光学膜片21的光线经过第一表面212A和第二表面212B时，至少会再经过一次散射。然后，光线经反射层213反射，再次经过菲涅尔透镜层212和扩散层211。经过上述过程的光线进行了多次散射，其相干性大幅度的降低，使得光线在投影屏幕100表面的干涉程度降低，从而使得投影屏幕100上出现的散斑的严重程度降低。
以光学膜片21在使用时的方向为例，示例地，菲涅尔透镜层212包括多个沿上下方向排布的第一表面212A，第一表面212A为自上而下向远离第二表面212B的方向倾斜的斜面，各第一表面212A与垂直于上下方向的平面的夹角θ可以相同，或者自上而下逐渐变大。由此，可以按照预定方向将光线反射。示例地，菲涅尔透镜层212由UV胶(Ultraviolet Rays，无影胶)或热固化胶水制成。
在一些实施例中，反射层213为涂覆在菲涅尔透镜层212上的一层金属层，该金属层中与第一表面212A贴合的部分形成反射面，金属层的材料为反射材料。反射材料包括铝和银中的至少一种，例如铝、银或者铝和银的组合物。
示例地，如图38所示，反射层213的材料为铝颗粒，其直径为5um～20um。直径在此范围内的铝颗粒，由于直径较小，在形成反射层213之后，铝颗粒会形成致密的反射面，光线照射在该反射面上时，其反射路径取决于菲涅尔透镜层212的第一表面212A的倾斜角度，不会出现因为铝颗粒较大，光线被铝颗粒反射到各个方向，而是能够按照预定方向射出，从而避免光线能量的浪费。另外，在满足铝颗粒全面覆盖第一表面212A的前提下，反射层213可以做得很薄，从而可以节省铝材料的消耗，节约制作成本。
又示例地，如图39所示，反射层213的材料为鳞片状铝粉。鳞片状铝粉为圆形片状结构，其径厚比(直径与厚度的比值)较大，例如为(40:1)～(100:1)，在此范围内的鳞片状铝粉的结合能力较强，能够降低反射层213中铝粉脱落的几率。
在一些实施例中，如图37所示，第一表面212A为雾化表面。射入光学膜片21的光线首先经过扩散粒子214的散射，再经过第一表面212A的散射。散射后的光线相干性会降低，使得光线射到投影屏幕表面的干涉程度降低，从而减弱投影屏幕表面出现的散斑的严重程度。扩散粒子214的材质为聚甲基丙烯酸甲酯(Polymethyl Methacrylate，PMMA)。
在另一些实施例中，第二表面212B为雾化表面，同样可以达到上述效果。
在又一些实施例中，第一表面212A与第二表面212B均为雾化表面。光线经过菲涅尔透镜层212时，会经过上述两个表面的扩散，使得扩散程度相对较大，光线之间的相干性进一步降低，从而使得光线在投影屏幕上出现干涉的程度降低，投影屏幕表面出现的散斑的严重程度也对应的降低。
在一些实施例中，如图40所示，第一表面212A涂布有扩散粒子214。涂布有扩散粒子214的第一表面212A形成雾化表面。当光线经过第一表面212A时，会被扩散粒子214扩散，向各个方向散射。散射后的光线相较于散射前的光线而言，光线的相干性更低，从而使得光线在投影屏幕100上出现的散斑的严重程度降低。此外，由于扩散粒子214的扩散作用，投影屏幕100的观看视角也会增大。在另一些实施例中，如图41所示，菲涅尔透镜层212内部分布有扩散粒子214，同样可以实现上述效果。
在一些实施例中，如图42所示，光学膜片21还包括多个第七凸起218，多个第七凸起218设置于第一表面212A上，且朝靠近反射层213的一侧凸起。第七凸起218可透光，被配置为提高第一表面212A的透过率。由于第一表面212A上设置有多个第七凸起218，使得第一表面212A为不平整的表面，光线经过第一表面212A时发生镜面反射的概率降低，更多的光线透过第一表面212A。并且，当光线通过第一表面212A上的第七凸起218时，光线会发生散射。从而进一步降低了光线之间的相干性，进而降低了投影屏幕100上出现的散斑的严重程度。
示例地，多个第七凸起218包括蛾眼结构和微透镜中的至少一种。当光线经过上述两种结构时均会发生扩散，朝向不同的方向散射，使得光线的扩散程度较大。当多个第七凸起218包括微透镜时，如图42所示，微透镜的形状为半球形。半球形的微透镜包括一个凸起的曲面，光线经过该曲面时会发生扩散。扩散后的光线，由于扩散程度增大，最终在投影屏幕表面形成的散斑的严重程度会降低。此外，微透镜也可以与菲涅尔透镜层212一体成型，并对微透镜的表面进行粗糙化处理，从而能够进一步扩大光线的扩散程度，以进一步降低投影屏幕上出现的散斑的严重程度。
又示例地，第七凸起218包括蛾眼结构。蛾眼结构具有减小反射率的功能，从而使得更多的光线能够透过第一表面212A，并且同样可以对光线进行扩散。
在一些实施例中，第一表面212A的雾度值为85％～95％。当第一表面212A的雾度值处于上述范围内时，光线在第一表面212A上发生镜面反射的概率较低，从而使得光线发生扩散的比例较高。
表面层215用于保护投影屏幕100。示例地，表面层215由柔性材料制成，例如，UV胶。由于UV胶具有柔性，能够进行卷曲。
在一些实施例中，如图37所述，光学膜片21还包括基材层216，基材层216设置于表面层215和扩散层211之间。基材层216可以作为制作表面层215的基底。在制作表面层215时，以基材层216远离扩散层211一侧的表面为基底制作表面层215。此外，由于设置有基材层216，使得光线在光学膜片21内部的光学路程增加，使光线的扩散程度进一步增大，从而能够进一步减小投影屏幕100上的光斑的严重程度。
示例地，基材层216由柔性材料制成，例如，聚对苯二甲酸乙二醇酯(Polyethylene Terephthalate,PET)、热塑性聚氨酯弹性体橡胶(Thermoplastic Polyurethanes，TPU)，苯乙烯系热塑性弹性体(Styrenic Block Copolymers，SBC，又称苯乙烯系嵌段共聚物)制成。均可使基材层216具有柔性且可卷曲。扩散层211也可以由柔性材料制成，例如，利用PET材料制成扩散层211，从而使得扩散层211也能够实现卷曲。
在一些实施例中，如图37所示，着色层217设置于基材层216和扩散层211之间。着色层217内分布有暗色染料，能够增加投影屏幕100的对比度。着色层217为光学透明胶，可以用来粘接基材层216和扩散层211。暗色染料一般为有机染料，可以选用偶氮类染料、酞菁类染料等。在另一些实施例中，也可以在表面层215、扩散层211或者基材层216中添加暗色染料，同样能够达到相同的效果。
可以理解的是，本公开一些实施例提供的菲涅尔透镜层212可以应用任何具有菲涅尔透镜层的投影屏幕中，不限于本公开一些实施例所提供的投影屏幕，本公开一些实施例中的投影屏幕的结构仅作为示例。
本领域的技术人员将会理解，本公开的公开范围不限于上述具体实施例，并且可以在不脱离本公开的精神的情况下对实施例的某些要素进行修改和替换。本公开的范围受所附权利要求的限制。

Claims (20)

  1. 一种投影装置，包括：
    投影屏幕，被配置为显示投影画面，所述投影屏幕包括：
    折叠机构，包括两个相对设置的第一边框；
    框架，包括两个相对设置的第二边框；
    幕布，具有相对的第一侧边、第二侧边和相对的第三侧边、第四侧边；所述第一侧边和所述第二侧边分别与所述两个第二边框固定连接，所述第三侧边和所述第四侧边分别与所述两个第一边框固定连接；
    光学引擎，被配置为将光束出射至所述投影屏幕；其中，
    所述两个第一边框的各自的两端分别与所述两个第二边框的各自的两端可拆卸地连接，且所述两个第一边框与所述两个第二边框围成所述框架；
    所述两个第一边框被配置为能够发生卷曲，以使所述两个第一边框能够带动所述幕布卷曲。
  2. 根据权利要求1所述的投影装置，其中，所述第一边框包括第一部分和第二部分，所述第一部分和所述第二部分分别包括弯曲部以及位于所述弯曲部两侧的平面部；
    所述第一部分的所述平面部和所述第二部分的所述平面部相连，且所述第一部分的所述弯曲部和所述第二部分的所述弯曲部组成空腔；所述第一部分的所述弯曲部被配置为在受到垂直于所述幕布的方向的作用力时与所述第二部分的所述弯曲部贴接。
  3. 根据权利要求2所述的投影装置，其中，所述投影屏幕还包括第二拉紧件，所述第二拉紧件连接所述第一边框的端部与所述第二边框的端部，所述第二拉紧件被配置为通过所述第一边框带动所述幕布沿平行于所述第二边框的长度方向的方向移动，以调整所述幕布在所述第二边框的长度方向上的拉紧度。
  4. 根据权利要求3所述的投影装置，其中，所述第二边框包括：
    第六凹槽，设置于所述第二边框的所述端部；
    第一通孔，与所述第六凹槽连通；
    所述第二拉紧件包括：
    第一连接件，设置于所述空腔内，且固定在所述第一边框的所述端部；
    第一凸起，位于所述第六凹槽内，且与所述第一连接件固定连接；所述第一凸起包括螺纹孔，所述螺纹孔包括内螺纹；
    第一调节杆，所述第一调节杆穿过所述第一通孔且与所述第一凸起活动连接；所述第一调节杆为螺杆，所述第一调节杆包括与所述螺纹孔的所述内螺纹相匹配的外螺纹；所述第一调节杆通过所述螺纹孔与所述第一凸起的所述内螺纹连接；所述第一凸起被配置为能够在所述第一调节杆的长度方向上移动。
  5. 根据权利要求1至4任一项所述的投影装置，其中，所述第一边框包括第一子边框和第二子边框，所述第一子边框与所述第二子边框分别包括第一端和第二端，所述第一连接件固定在所述第一子边框的所述第一端或所述第二子边框的所述第一端；
    所述投影屏幕还包括第一拉紧件，所述第一拉紧件分别与所述第一子边框的所述第二端和第二子边框的所述第二端连接；所述第一拉紧件被配置为调整所述幕布在所述第一边框的长度方向上的拉紧度。
  6. 根据权利要求5所述的投影装置，其中，所述第一拉紧件包括：
    两个第二连接件，位于所述空腔内，且分别固定在所述第一子边框的所述第二端和第二子边框的所述第二端；所述两个第二连接件中的一个包括第二凸起，所述两个第二连接件中的另一个包括与所述第二凸起的形状匹配的第一凹槽，所述第二凸起中的至少部分位于所述第一凹槽内；
    弹性元件，套接在所述第二凸起上，且所述弹性元件的两端分别与所述两个第二连接件抵接。
  7. 根据权利要求1至6任一项所述的投影装置，其中，所述投影屏幕还包括位于所述两个第一边框之间的第三边框，所述第三边框的两端分别与所述两个第二边框可拆卸连接，且所述第三边框与所述幕布固定连接。
  8. 一种投影装置，包括：
    投影屏幕，被配置为显示投影画面，所述投影屏幕包括：
    框架，包括两个相对设置的第一边框和两个相对设置的第二边框；所述第二边框包括第三子边框和第四子边框；
    折叠机构，包括铰链，所述铰链包括旋转轴，所述旋转轴的方向与所述第一边框的长度方向平行，且与所述第二边框的长度方向垂直；所述铰链被配置为带动所述第三子边框和第四子边框绕所述旋转轴转动；
    幕布，与所述框架固定连接，所述幕布的边缘翻折以包裹所述框架的边缘；
    第一拉紧件，设置于所述框架远离所述幕布的一侧，且所述第一拉紧件的一端固定在所述幕布的所述边缘，所述第一拉紧件的另一端与所述第二边框滑动连接；
    第二拉紧件，设置于所述框架远离所述幕布的一侧，且所述第二拉紧件的一端固定在所述幕布的所述边缘，所述第二拉紧件的另一端固定在所述第一边框上；所述第二拉紧件被配置为带动所述幕布沿所述第二边框的长度方向移动，以使所述第一拉紧件在所述幕布的带动下，在所述第二边框上滑动；
    光学引擎，被配置为将光束出射至所述投影屏幕。
  9. 根据权利要求8所述的投影装置，其中，所述投影屏幕还包括：
    第一支撑杆，在所述第二边框的长度方向上与所述幕布的所述边缘连接；所述第二边框包括第五凹槽；
    第二支撑杆，在所述第一边框的长度方向上与所述幕布的所述边缘连接；
    所述幕布包括容置部，所述幕布的所述边缘翻折到所述框架远离所述幕布的一侧形成所述容置部，所述第一支撑杆和所述第二支撑杆设置于对应的所述容置部内；
    所述第一拉紧件包括：
    第一调节孔，设置于所述第一支撑杆上；
    第二调节杆，所述第二调节杆的至少部分位于所述第一调节孔内且与所述第一调节孔活动连接，所述第二调节杆在所述第一调节孔内的长度可调节，且所述第二调节杆远离所述第一调节孔的一端与所述第二边框滑动连接；所述第二调节杆穿过所述第五凹槽，且所述第二调节杆能够在所述第五凹槽内滑动；
    所述第二拉紧件包括：
    第二调节孔，设置于所述第二支撑杆上；
    第三调节杆，所述第三调节杆的至少部分位于所述第二调节孔内且与所述第二调节孔活动连接，所述第三调节杆在所述第二调节孔内的长度可调节；所述第三调节杆远离所述第二调节孔的一端固定在所述第一边框上。
  10. 根据权利要求9所述的投影装置，其中，所述第一调节孔与所述第二调节孔为螺纹孔，所述螺纹孔包括内螺纹；
    所述第二调节杆与所述第三调节杆为螺杆，所述螺杆包括与所述内螺纹相匹配的外螺纹。
  11. 根据权利要求9所述的投影装置，其中，所述第一拉紧件还包括滑块，所述滑块与所述第二调节杆远离所述第一调节孔的一端连接，所述滑块设置于所述第五凹槽远离所述第一支撑杆的一侧，且所述滑块与所述第二边框滑动连接。
  12. 根据权利要求11所述的投影装置，其中，
    所述第二边框包括第四凸起，所述第四凸起朝所述第二边框远离所述幕布的所述边缘的方向凸起，所述第五凹槽设置于所述第四凸起内；所述滑块包括第二凹槽，所述滑块通过所述第二凹槽扣置在所述第四凸起上；或
    所述滑块具有第五凸起，所述第五凸起朝所述幕布的所述边缘凸出，所述第五凸起中的至少部分位于所述第五凹槽内。
  13. 根据权利要求12所述的投影装置，其中，所述投影屏幕还包括滚珠；
    所述滚珠设置于所述滑块靠近所述幕布的所述边缘的侧面与所述第五凹槽远离所述幕布的所述边缘的侧面之间；或
    所述滚珠设置于所述第四凸起和所述第二凹槽之间；或
    所述滚珠设置于所述第五凸起的侧面和所述第二边框与所述第五凸起的所述侧面相对的侧面之间。
  14. 根据权利要求11所述的投影装置，其中，所述第一拉紧件还包括：
    第一磁体，设置于所述第二边框远离所述第一支撑杆的一侧；
    第二磁体，设置于所述滑块靠近所述第一支撑杆的一侧；
    所述第一磁体的磁性与所述第二磁体的磁性相斥。
  15. 根据权利要求14所述的投影装置，其中，
    所述第一磁体包括两个条形磁体，设置于所述第五凹槽两侧，所述两个条形磁体中的一个条形磁体与所述第二边框远离所述第一支撑杆的一侧固定连接；或
    所述第一磁体为环形，所述第一磁体套设在所述第二调节杆上，所述第一磁体与所述第二边框远离所述第一支撑杆的一侧滑动连接。
  16. 根据权利要求8至15任一所述的投影装置，其中，所述投影屏幕还包括限制件；
    所述限制件与所述第一边框和所述第二边框中的至少一个可拆卸地固定连接，所述限制件被配置为将所述第一边框和所述第二边框限制在共面位置。
  17. 根据权利要求1至16任一项所述的投影装置，其中，所述幕布包括：
    柔性载体；
    光学膜片，固定在所述柔性载体的一侧；所述柔性载体的另一侧贴合在所述框架上；所述光学膜片包括：
    扩散层；
    菲涅尔透镜层，包括：
    第一表面，设置于所述菲涅尔透镜层靠近反射层的一侧；
    第二表面，设置于所述菲涅尔透镜层靠近所述扩散层的一侧；
    所述反射层，包括反射面，所述反射面设置于所述反射层靠近所述菲涅尔透镜层的一侧；
    其中，所述扩散层、所述菲涅尔透镜层和所述反射层依次层叠设置；
    所述第一表面和所述第二表面中的至少一个为雾化表面。
  18. 根据权利要求17所述的投影装置，其中，所述第一表面为雾化表面；
    所述光学膜片还包括扩散粒子；所述第一表面涂布有扩散粒子。
  19. 根据权利要求17所述的投影装置，其中，所述第一表面为雾化表面；
    所述光学膜片还包括：
    多个第七凸起，设置于所述第一表面上，且朝向靠近所述反射面的一侧凸起，所述多个第七凸起可透光，被配置为提高所述第一表面的透过率；所述多个第七凸起包括蛾眼结构和微透镜中的至少一种。
  20. 根据权利要求17所述的投影装置，其中，
    所述第一表面为雾化表面；或
    所述第二表面为雾化表面；或
    所述第一表面与所述第二表面均为雾化表面。
PCT/CN2022/120929 2021-09-26 2022-09-23 投影装置 WO2023046079A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202280060247.5A CN117940847A (zh) 2021-09-26 2022-09-23 投影装置

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
CN202111131292.9A CN115877646A (zh) 2021-09-26 2021-09-26 投影屏幕
CN202111131292.9 2021-09-26
CN202111135712.0A CN113741134A (zh) 2021-09-27 2021-09-27 一种投影屏幕及投影装置
CN202111135712.0 2021-09-27
CN202111188247.7 2021-10-12
CN202111188247.7A CN115963686A (zh) 2021-10-12 2021-10-12 投影屏幕

Publications (1)

Publication Number Publication Date
WO2023046079A1 true WO2023046079A1 (zh) 2023-03-30

Family

ID=85719302

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/120929 WO2023046079A1 (zh) 2021-09-26 2022-09-23 投影装置

Country Status (2)

Country Link
CN (1) CN117940847A (zh)
WO (1) WO2023046079A1 (zh)

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010085641A (ja) * 2008-09-30 2010-04-15 Seiko Epson Corp スクリーン
TW201106088A (en) * 2009-08-14 2011-02-16 Zone Technologies Co Ltd I Projection screen
US20170059980A1 (en) * 2015-09-01 2017-03-02 Izumi-Cosmo Co., Ltd. Board for projector
CN107799010A (zh) * 2016-08-29 2018-03-13 三星显示有限公司 可卷曲的显示装置
US20180270410A1 (en) * 2017-03-15 2018-09-20 Pilot, Inc. Smart selfie mirror
CN110807993A (zh) * 2019-11-19 2020-02-18 京东方科技集团股份有限公司 一种显示装置
CN213876293U (zh) * 2020-12-30 2021-08-03 青岛海信激光显示股份有限公司 投影屏幕
CN213876294U (zh) * 2020-12-30 2021-08-03 青岛海信激光显示股份有限公司 投影屏幕
CN213876290U (zh) * 2020-12-30 2021-08-03 青岛海信激光显示股份有限公司 投影屏幕
CN213904050U (zh) * 2021-01-20 2021-08-06 青岛海信激光显示股份有限公司 投影屏幕
CN113238449A (zh) * 2021-05-24 2021-08-10 青岛海信激光显示股份有限公司 一种抗天花板反光投影屏幕及投影系统
CN113741134A (zh) * 2021-09-27 2021-12-03 青岛海信激光显示股份有限公司 一种投影屏幕及投影装置

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010085641A (ja) * 2008-09-30 2010-04-15 Seiko Epson Corp スクリーン
TW201106088A (en) * 2009-08-14 2011-02-16 Zone Technologies Co Ltd I Projection screen
US20170059980A1 (en) * 2015-09-01 2017-03-02 Izumi-Cosmo Co., Ltd. Board for projector
CN107799010A (zh) * 2016-08-29 2018-03-13 三星显示有限公司 可卷曲的显示装置
US20180270410A1 (en) * 2017-03-15 2018-09-20 Pilot, Inc. Smart selfie mirror
CN110807993A (zh) * 2019-11-19 2020-02-18 京东方科技集团股份有限公司 一种显示装置
CN213876293U (zh) * 2020-12-30 2021-08-03 青岛海信激光显示股份有限公司 投影屏幕
CN213876294U (zh) * 2020-12-30 2021-08-03 青岛海信激光显示股份有限公司 投影屏幕
CN213876290U (zh) * 2020-12-30 2021-08-03 青岛海信激光显示股份有限公司 投影屏幕
CN213904050U (zh) * 2021-01-20 2021-08-06 青岛海信激光显示股份有限公司 投影屏幕
CN113238449A (zh) * 2021-05-24 2021-08-10 青岛海信激光显示股份有限公司 一种抗天花板反光投影屏幕及投影系统
CN113741134A (zh) * 2021-09-27 2021-12-03 青岛海信激光显示股份有限公司 一种投影屏幕及投影装置

Also Published As

Publication number Publication date
CN117940847A (zh) 2024-04-26

Similar Documents

Publication Publication Date Title
US7595930B2 (en) Portable front projection screens
US7706066B2 (en) Portable front projection screen assemblies with flexible screens
US8045264B2 (en) Projection backwall apparatus and system
US7835078B2 (en) Reflecting screen, method of manufacturing the same, and reflection-type projection system
US7489444B1 (en) Portable front projection screen assemblies with flexible screens
US7974005B2 (en) Display screen for use in front projectors
US10444616B2 (en) Rear projection screen
JP4201022B2 (ja) スクリーン、プロジェクタ及び画像表示装置
JPH0658494B2 (ja) 映写スクリーン装置
JP2012514771A (ja) 高コントラストのフロント投射スクリーン
US4025160A (en) Dual purpose projection screen
TWM577512U (zh) Short focal length projection anti-light curtain
JP2006195475A (ja) 両面スクリーン
WO2023046079A1 (zh) 投影装置
WO2023025308A1 (zh) 投影装置
WO2023046183A1 (zh) 投影装置
TW201020635A (en) Back light module and display device using the same
CN211454220U (zh) 短焦正投式软幕
TW409196B (en) Transmission-type screen
CN218728579U (zh) 一种便于安装的光学屏幕
CN206684437U (zh) 一种用于电视背光的电视透镜
WO2023020543A1 (zh) 投影装置
TWI385418B (zh) 光學膜片及背光模組
JPH10186521A (ja) プロジェクタ用反射型スクリーン
WO2006028334A1 (en) Rear projection screen

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22872123

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 202280060247.5

Country of ref document: CN

NENP Non-entry into the national phase

Ref country code: DE