CN113641061A

CN113641061A - Diffuser assembly, light beam speckle eliminating device and projector

Info

Publication number: CN113641061A
Application number: CN202110937509.9A
Authority: CN
Inventors: 欧阳剑; 徐旭升; 陈仁喆; 张聪; 胡震宇
Original assignee: Shenzhen Huole Science and Technology Development Co Ltd
Current assignee: Shenzhen Huole Science and Technology Development Co Ltd
Priority date: 2021-08-16
Filing date: 2021-08-16
Publication date: 2021-11-12
Anticipated expiration: 2041-08-16
Also published as: WO2023020166A1; CN115951549A; CN113641061B

Abstract

The present disclosure relates to a diffusion sheet assembly, a light beam speckle-eliminating device and a projector, the diffusion sheet assembly includes a first moving layer, a base, a first elastic member, a second elastic member and a diffusion sheet, the driving part includes a first driving part and a second driving part; the first elastic piece is connected with the diffusion sheet and the first moving layer and can deform along a first direction parallel to the diffusion sheet so that the diffusion sheet can move along the first direction relative to the first moving layer; the second elastic piece is connected with the first moving layer and the base and can deform along a second direction parallel to the diffusion sheet, so that the first moving layer and the diffusion sheet can move along the second direction relative to the base; the first driving part drives the diffusion sheet to move along a first direction relative to the first moving layer, and the second driving part drives the first moving layer and the diffusion sheet to move along a second direction relative to the base, wherein the first direction and the second direction are crossed. The number of random phases of the diffusion sheet in unit time is large, and the speckle dispersing effect is good.

Description

Diffuser assembly, light beam speckle eliminating device and projector

Technical Field

The disclosure relates to the technical field of projection display, in particular to a diffusion sheet assembly, a light beam speckle eliminating device and a projector.

Background

The light beam projection display technology can reproduce rich and gorgeous colors of an objective world most truly and provide shocking expressive force, wherein speckle elimination is a relatively popular research subject in the light beam projection technology, and the principle of the speckle elimination is mainly to reduce the coherence of light beams in space and time.

The existing structure for eliminating the light beam speckles mostly adopts a rotary type diffusion wheel form, the principle is the superposition of a plurality of independent speckle patterns in unit time, and under the condition of certain rotating speed, the random phase quantity of a diffusion sheet in unit time is increased, so that a better speckle eliminating effect can be obtained. The diffuser near the beam source is used to eliminate smaller spots and requires a smaller diffuser size, but for a rotating type diffuser wheel, the smaller diffuser provides less random phase and poor speckle elimination. In addition, the size of the diffusion wheel needs to be increased, a rotating wheel with a larger size needs to be matched, the practical application area is limited, the maximization of the diffusion sheet application area cannot be realized, and the speckle dispersing effect is poor.

Disclosure of Invention

The purpose of this disclosure is to provide a diffuser assembly, a light beam speckle reduction device and a projector, this diffuser assembly can increase the number of random phases of the diffuser in unit time, and the speckle reduction effect is good.

In order to achieve the above object, the present disclosure provides a diffusion sheet assembly, which includes a first moving layer, a base, a first elastic member, a second elastic member, and a diffusion sheet for light beams to penetrate through, wherein the driving portion includes a first driving portion and a second driving portion;

the first elastic member connects the diffusion sheet and the first moving layer, and is configured to: a first movable layer capable of moving in a first direction parallel to the diffusion sheet;

the second elastic member connects the first moving layer and the base, and the second elastic member is configured to: a second movable layer capable of deforming in a second direction parallel to the diffusion sheet to allow the first movable layer and the diffusion sheet to move in the second direction relative to the base;

the first driving part is used for driving the diffusion sheet to move along the first direction relative to the first moving layer, the second driving part is used for driving the first moving layer and the diffusion sheet to move along the second direction relative to the base, and the first direction and the second direction are crossed.

Optionally, the diffuser assembly further includes a second moving layer, the first moving layer is configured as a frame structure, the diffuser is disposed on the second moving layer, the first elastic member connects the frame structure and the second moving layer and supports the second moving layer in the beam penetrating direction, and the second moving layer and the frame structure are disposed at an interval in the first direction, the second elastic member is configured to support the first moving layer in the beam penetrating direction and connect to the base, so that the first moving layer and the base are disposed at an interval in the beam penetrating direction;

the first driving part is used for driving the second moving layer to reciprocate in the first direction in the frame structure and relative to the frame structure, and the second driving part is used for driving the first moving layer and the second moving layer to reciprocate along the second direction relative to the base.

Optionally, the frame structure includes a first frame plate, a second frame plate, a third frame plate, and a fourth frame plate, which are sequentially and end-to-end connected, where the first frame plate and the third frame plate are oppositely disposed along the first direction, and the second frame plate and the fourth frame plate are oppositely disposed along the second direction; the second moving layer comprises two first outer sides which are arranged along the first direction in an opposite mode, and the two first outer sides are arranged along the first direction at intervals with the first frame plate and the third frame plate respectively;

the first elastic piece comprises two first spring pieces which are oppositely arranged along the first direction and extend along the second direction, wherein one first spring piece is connected with one first outer side face and the second frame plate, and the other first spring piece is connected with the other first outer side face and the fourth frame plate; the second elastic member includes two second spring pieces disposed oppositely in the second direction, one of the second spring pieces connects the outer side surface of the second frame plate and the base, and the other of the second spring pieces connects the outer side surface of the fourth frame plate and the base.

Optionally, the first reed comprises a first reed body and a first support sheet, the first reed body extends along the second direction, the first reed body is formed with a first long opening which extends along the second direction and is closed at two ends, the first long opening comprises two first inner edges which are oppositely arranged along the second direction and two second inner edges which are oppositely arranged along the light beam penetrating direction, the first support sheet is arranged in the first long opening, one end of the first support sheet is connected to one of the first inner edges, the other end of the first support sheet and the other first inner edge are arranged at intervals along the second direction, the first support sheet and the two second inner edges are arranged at intervals along the light beam penetrating direction, the first reed body is used for being connected with the second frame plate or the fourth frame plate, the first supporting sheet is used for being connected with the first outer side face;

and/or the second reed comprises a second reed body extending along the first direction and a second support sheet, a second strip-shaped opening which extends along the first direction and is closed at two ends is formed on the second reed body, the second strip opening comprises two third inner edges oppositely arranged along the first direction and two fourth inner edges oppositely arranged along the light beam penetrating direction, the second support piece is arranged in the second strip opening, one end of the second support piece is connected to one of the third inner edges, the other end of the second support sheet and the other third inner edge are arranged at intervals along the first direction, and the second support sheet and the two fourth inner edges are arranged at intervals along the light beam penetrating direction, the second reed body is used for being connected with the base, and the second supporting piece is used for being connected with the outer side face or the outer side face.

Optionally, two ends of the first reed body are respectively formed with two first clamping grooves, the first outer side surface includes a first portion and a second portion, the first portion is relatively attached to and connected with the first supporting sheet, the second portion is provided with a first clamping block, a second clamping block is arranged on the inner side of the second frame plate or the inner side of the fourth frame plate, and the two first clamping grooves are respectively clamped with the first clamping block and the second clamping block;

and/or, two second draw-in grooves are formed at two ends of the second reed body respectively, the outer side surface of the second frame plate or the outer side surface of the fourth frame plate are connected and all comprise a third part and a fourth part, the third part is connected with the second support sheet in a relatively laminating manner, a third fixture block is arranged on the fourth part, a fourth fixture block is arranged on the base, and the second draw-in grooves are respectively connected with the third fixture block and the fourth fixture block in a clamping manner.

Optionally, the base includes a base frame and a base bottom plate, and the base bottom plate is plugged and disposed in the base frame; a first opening is formed in the second moving layer, the diffusion sheet is plugged and arranged in the first opening, a second opening is formed in the base bottom plate, and the second opening is opposite to the first opening along the light beam penetrating direction;

preferably, base frame includes interconnect's base frame body and base frame curb plate, first removal layer with the base frame body is worn to establish the direction interval at the light beam and is set up, the shutoff of base bottom plate set up in this is internal to the base frame, the base frame curb plate is followed the second direction is extended and is worn to establish the direction epirelief at the light beam and is in the base frame body, the base frame curb plate is followed the tip of second direction is provided with the fourth fixture block, with corresponding on the second reed body the second draw-in groove joint.

Optionally, the first driving part includes a first driving magnet and a first current conductor, which are oppositely disposed, one of the first driving magnet and the first current conductor is disposed on the second moving layer, and the other is disposed on the base; and/or the presence of a gas in the gas,

the second driving part comprises a second driving magnet and a second electric conductor which are oppositely arranged, one of the second driving magnet and the second electric conductor is arranged on the first moving layer, and the other one of the second driving magnet and the second electric conductor is arranged on the base;

preferably, the base comprises a base frame and a base bottom plate, and the base bottom plate is plugged and arranged in the base frame; a first opening is formed in the second moving layer, the diffusion sheet is plugged and arranged in the first opening, a second opening is formed in the base bottom plate, and the second opening is opposite to the first opening along the light beam penetrating direction;

the first electrifying conductor and the second electrifying conductor are arranged on the inner surface of the base bottom plate, a first mounting groove for mounting the first driving magnet is formed on the second moving layer, and a second mounting groove for mounting the second driving magnet is formed on the first moving layer;

preferably, the diffuser member further comprises a flexible circuit board laid on the inner surface of the base bottom plate, and the first and second current-carrying conductors are connected to the flexible circuit board;

preferably, the diffuser assembly further includes a controller, a first detection element for detecting first motion information of the second moving layer, and a second detection element for detecting second motion information of the first moving layer, the first detection element, the second detection element, the first current-carrying conductor, and the second current-carrying conductor being electrically connected to the controller;

the controller is used for controlling the first electrifying conductor to work according to the first motion information detected by the first detection element and controlling the second electrifying conductor to work according to the second motion information detected by the second detection element;

preferably, the first driving magnet includes a first individual magnet and a second individual magnet sequentially arranged along the first direction, N poles and S poles of the first individual magnet and the second individual magnet are both arranged along a beam penetrating direction, and magnetic pole directions of the first individual magnet and the second individual magnet are opposite;

the first electrifying conductor is configured as a first electrifying coil, the first electrifying coil comprises two first straight line sections which extend along the second direction, are arranged at intervals along the first direction and have opposite current directions, and the two first straight line sections are respectively used for being arranged opposite to the first single magnet and the second single magnet;

and/or the second driving magnet comprises a third monomer magnet and a fourth monomer magnet which are sequentially arranged along the second direction, the N poles and the S poles of the third monomer magnet and the fourth monomer magnet are arranged along the light beam penetrating direction, and the magnetic pole directions of the third monomer magnet and the fourth monomer magnet are opposite;

the second current-carrying conductor is configured as a second current-carrying coil, the second current-carrying coil comprises two second straight line segments which extend along the first direction, are arranged at intervals along the second direction and have opposite current directions, and the two second straight line segments are respectively used for being arranged opposite to the third single magnet and the fourth single magnet;

preferably, the first drive magnet further comprises a first neutral layer disposed between the first unitary magnet and the second unitary magnet, the first neutral layer configured to: the first neutral layer may be configured such that the first straight line segment facing the first single magnet does not face the second single magnet and the first straight line segment facing the second single magnet does not face the first single magnet during the reciprocating movement of the first drive magnet relative to the first energized coil in the first direction;

and/or the second drive magnet further comprises a second neutral layer disposed between the third unitary magnet and the fourth unitary magnet, the second neutral layer configured to: the second neutral layer may be configured such that the second straight line segment opposing the third individual magnet does not oppose the fourth individual magnet and the second straight line segment opposing the fourth individual magnet does not oppose the third individual magnet during the second driving magnet reciprocates in the second direction relative to the second electrified coil.

Optionally, the diffuser assembly further includes a second moving layer, a first guiding support and a second guiding support, the first moving layer is configured as a frame structure, the diffuser is disposed on the second moving layer, the first guiding support is disposed on the frame structure and supports the second moving layer in the frame structure along a light beam passing direction, the first elastic member connects the second moving layer and the first moving layer, and the second moving layer and the frame structure are disposed at an interval in the first direction;

the second guide supporting piece is arranged on the base and supports the first moving layer on the base along the light beam penetrating direction, and the second elastic piece is connected with the base and the first moving layer;

preferably, the first guide support comprises two first guide support columns arranged on the first moving layer at intervals along a beam penetrating direction, and the second moving layer is movably arranged between the two first guide support columns along the first direction;

and/or the second guide support piece comprises two second guide support columns which are arranged on the base at intervals along the beam penetrating direction, and the first moving layer is movably arranged between the two second guide support columns along the second direction.

The present disclosure also provides a light beam spot-dissipating device, which includes a light beam emitter, a beam-reducing assembly, a light-homogenizing assembly, and a scattering member disposed between the beam-reducing assembly and the light-homogenizing assembly, wherein the scattering member includes the diffusion sheet assembly.

The present disclosure additionally provides a projector comprising the beam despeckle device.

In the technical scheme, the first elastic piece can deform along a first direction parallel to the diffusion sheet, the second elastic piece can deform along a second direction parallel to the diffusion sheet, and the first elastic piece and the second elastic piece can play a role in resetting on one hand and can improve the movement stability of the diffusion sheet on the other hand. The principle of dynamic speckle elimination is the superposition of a plurality of independent speckle patterns in unit time, so that a better speckle elimination effect can be obtained by increasing the random phase number of the diffusion sheet in unit time, and compared with the traditional rotary diffusion sheet, the movable diffusion sheet fully utilizes different phase divergence angles of all positions on the diffusion sheet, can better weaken the coherence of light beams, and can provide a better speckle elimination effect under the same size. In the process that the diffusion sheet is driven to move along the first direction and the second direction through the first driving part and the second driving part respectively, the number of random phases is increased, the area utilization rate of the diffusion sheet is improved, the coherence of light beams is weakened better, and the speckle dispersing effect is improved.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is an exploded view of a diffuser assembly according to one embodiment of the present disclosure;

FIG. 2 is a schematic perspective view of a diffuser plate assembly according to an embodiment of the present disclosure;

FIG. 3 is a top view of a diffuser assembly according to an embodiment of the present disclosure;

FIG. 4 is a side view of a diffuser assembly according to an embodiment of the present disclosure;

FIG. 5 is a schematic view of a diffuser assembly according to an embodiment of the present disclosure taken along a second direction;

FIG. 6 is an exploded view of a diffuser assembly according to another first embodiment of the present disclosure, wherein first and second directing support columns are also shown;

FIG. 7 is a schematic view of a beam spot-dissipating apparatus according to an embodiment of the present disclosure.

Description of the reference numerals

10 diffuser assembly 101 diffuser

103 first moving layer 1030 second fixture

1031 first frame plate 1032 second frame plate

1033 third frame plate 1034 fourth frame plate

1035 third latch 104 base

1040 fourth block 1041 base frame

10411 base frame body 10412 base frame side plate

1042 base bottom 10420 second opening

1043 Flexible Circuit Board

105 first resilient member 10501 first inner edge

10502 second inner edge 1051 first spring plate

10510 first card slot 10511 first reed body

10512 first supporting piece 10513 first clamping block

10514 first deformable arm

106 second elastic member 1061 second spring

10610 second slot 10611 second spring body

10612 second support piece 10613 second deformation arm

107 first driving part

1071 first drive magnet 10711 first unit magnet

10712 second individual magnet 10713 first neutral layer

1072 first energizing conductor 10720 first straight line segment

108 second driving part 1081 second driving magnet

10811 third individual magnet 10812 fourth individual magnet

10813 second neutral layer 1082 second current carrying conductor

10820 second straight segment 109 second moving layer

1091 first outer side 1092 first opening

110 first detecting element

111 first guide support 1110 first guide support column

112 second guide support 1120 second guide support column

300 light beam emitter 400 beam reduction assembly

500 dodging subassembly 600 diffusion piece

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, directional terms such as "first direction" and "second direction" used in the case where no description is made to the contrary may be referred to as shown in fig. 1; the light beam penetration direction can also refer to fig. 1; terms of orientation such as "inner and outer" are used to refer to the inner and outer of a particular structural outline, and terms such as "first, second, third and fourth" are used merely to distinguish one element from another and are not sequential or significant.

Referring to fig. 1 to 6, the present disclosure provides a diffuser assembly, which includes a first moving layer 103, a base 104, a first elastic member 105, a second elastic member 106, and a diffuser 101 through which light beams pass, wherein a driving portion includes a first driving portion 107 and a second driving portion 108; the first elastic member 105 connects the diffusion sheet 101 and the first moving layer 103, and the first elastic member 105 is configured to: is deformable in a first direction a parallel to the diffusion sheet 101 so that the diffusion sheet 101 can move in the first direction a with respect to the first moving layer 103; the second elastic member 106 connects the first moving layer 103 and the base 104, and the second elastic member 106 is configured to: is deformable in a second direction B parallel to the diffusion sheet 101 so that the first moving layer 103 and the diffusion sheet 101 can move in the second direction B with respect to the base 104; the first driving unit 107 is configured to drive the diffusion sheet 101 to move in a first direction a relative to the first moving layer 103, and the second driving unit 108 is configured to drive the first moving layer 103 and the diffusion sheet 101 to move in a second direction B relative to the base 104, where the first direction a and the second direction B intersect.

In the above-described embodiment, the first elastic member 105 can be deformed in the first direction a parallel to the diffusion sheet 10, and the second elastic member 106 can be deformed in the second direction B parallel to the diffusion sheet 101, so that the first elastic member 105 and the second elastic member 106 can perform a restoring function, and the movement stability of the diffusion sheet 101 can be improved. The principle of dynamic speckle elimination is the superposition of a plurality of independent speckle patterns in unit time, so that a better speckle elimination effect can be obtained by increasing the random phase number of the diffusion sheet 101 in unit time, and compared with the traditional rotary diffusion sheet, the movable diffusion sheet 101 fully utilizes different phase divergence angles of all positions on the diffusion sheet 101, can better weaken the coherence of light beams, and can provide a better speckle elimination effect under the same size. In the process that the diffusion sheet 101 is driven by the first driving part 107 and the second driving part 108 to move along the first direction A and the second direction B respectively, the number of random phases is increased, the area utilization rate of the diffusion sheet 101 is improved, the coherence of light beams is better weakened, and the speckle eliminating effect is improved.

Referring to fig. 1 and 2, the diffusion sheet assembly further includes a second moving layer 109, the first moving layer 103 is configured as a frame structure, the diffusion sheet 101 is disposed on the second moving layer 109 for light beam to pass through, the first elastic member 105 connects the frame structure and the second moving layer 109 and supports the second moving layer 109 in the light beam passing direction, the second moving layer 109 and the frame structure are disposed at an interval in the first direction a, and the second elastic member 106 is configured to support the first moving layer 103 in the light beam passing direction and connect to the base 104, so that the first moving layer 103 and the base 104 are disposed at an interval in the light beam passing direction; the first driving part 107 is for driving the second movable layer 109 to reciprocate in the first direction a within and relative to the frame structure, and the second driving part 108 is for driving the first movable layer 103 and the second movable layer 109 to reciprocate in the second direction B relative to the base 104.

In this embodiment, first, the first moving layer 103 is provided as a frame structure, and the second moving layer 109 for providing the diffusion sheet 101 is provided in the frame structure so as to be reciprocally movable in the first direction a, so that the design in the thickness direction (i.e., the light beam passing direction) of the diffusion sheet assembly is greatly reduced, and the compactness of the structural design is improved; and the first elastic member 105 and the second elastic member 106 can perform the above-mentioned functions of restoration and improvement of movement stability, the first elastic member 105 can also support and connect the second movable layer 109 in the frame structure, and the second elastic member 106 can also support and connect the first movable layer 103 to the base 104, that is, the first elastic member 105 and the second elastic member 106 can respectively support the second movable layer 109 and the first movable layer 103, so as to prevent the second movable layer 109 from reciprocating in the first direction a relative to the first movable layer 103 and prevent the first movable layer 103 from reciprocating in the second direction B relative to the base 104, the second moving layer 109 and the first moving layer 103 are shaken in the beam passing direction, the stability of the reciprocating movement is improved, and need not to set up bearing structure alone, simplify the design of structure and do benefit to the design of diffusion piece subassembly lightweight and frivolous.

In one embodiment, referring to fig. 1 and 2, the frame structure of the diffuser plate assembly includes a first frame plate 1031, a second frame plate 1032, a third frame plate 1033, and a fourth frame plate 1034 that are connected end to end in this order, the first frame plate 1031 and the third frame plate 1033 being disposed opposite to each other in a first direction a, and the second frame plate 1032 and the fourth frame plate 1034 being disposed opposite to each other in a second direction B; the second moving layer 109 includes two first outer side surfaces 1091 disposed opposite to each other in the first direction a, and the two first outer side surfaces 1091 are spaced apart from the first and

third frame plates

1031 and 1033, respectively, in the first direction a.

The first resilient member 105 comprises two first leaves 1051 oppositely arranged along the first direction a and each extending along the second direction B, wherein one of the first leaves 1051 connects one of the first outer side faces 1091 with the second frame plate 1032, and the other of the first leaves 1051 connects the other of the first outer side faces 1091 with the fourth frame plate 1034; the second elastic member 106 includes two second springs 1061 disposed oppositely in the second direction B, wherein one of the second springs 1061 connects the outer side surface of the second frame plate 1032 with the base 104, and the other second spring 1061 connects the outer side surface of the fourth frame plate 1034 with the base 104.

In this embodiment, first, the first moving layer 103 is configured as a square frame structure, which effectively improves the stability of the structure of the first moving layer 103; secondly, the first elastic member 105 is provided as two first spring pieces 1051, and each first spring piece 1051 connects the corresponding first outer side surface 1091 with one of the second frame plate 1032 and the fourth frame plate 1034, when the second moving layer 109 reciprocates in the square frame structure along the first direction a, the two first spring pieces 1051 can play a good role in resetting, so as to reduce the load of the first driving portion 107, and the two first spring pieces 1051 can improve the stability of the second moving layer 109 in the reciprocating movement along the first direction a; in addition, the two first reeds 1051 are respectively arranged opposite to the first outer side surface 1091 of the second movable layer 109, so that the arrangement of the dimension of the diffusion sheet assembly in the first direction a is reduced, the arrangement of the dimension of the diffusion sheet assembly in the thickness direction can also be reduced, and the light and thin design of the diffusion sheet assembly is facilitated. Similarly, the second elastic member 106 is provided as two second springs 1061, wherein one of the second springs 1061 connects the outer side surface of the second frame plate 1032 with the base 104, and the other second spring 1061 connects the outer side surface of the fourth frame 1034 with the base 104. When the first movable layer 103 moves back and forth relative to the base along the second direction B, the two second reeds 1061 can perform a good resetting function, so as to reduce the load of the second driving part 108, and the two second reeds 1061 can improve the stability of the reciprocating movement of the first movable layer 103 along the second direction B; in addition, the two second reeds 1061 are respectively used for oppositely arranging the outer side surface of the second frame plate 1032 and the outer side surface of the fourth frame 1034, so that the size arrangement of the diffusion sheet assembly in the second direction B is reduced, the size arrangement of the diffusion sheet assembly in the thickness direction can also be reduced, and the light and thin design of the diffusion sheet assembly is facilitated.

Referring to fig. 1 and 4, the first reed 1051 includes a first reed body 10511 and a first support sheet 10512 both extending along the second direction B, the first reed body 10511 is formed with a first long mouth extending along the second direction B and having both ends closed, the first long mouth includes two first inner edges 10501 oppositely disposed along the second direction B and two second inner edges 10502 oppositely disposed along the beam passing direction, the first support sheet 10512 is disposed in the first long mouth and one end of the first support sheet 10512 is connected to one of the first inner edges 10501, the other end of the first support sheet 10512 is spaced apart from the other first inner edge 10501 along the second direction B, and the first supporting sheet 10512 and the two second inner edges 10502 are both disposed at intervals along the beam passing direction, the first reed body 10511 is used for connecting with the second frame plate 1032 or the fourth frame plate 1034, and the first supporting sheet 1051 is used for connecting with the first outer side surface 1091.

And/or the second reed 1061 includes a second reed body 10611 and a second support piece 10612 extending along the first direction a, the second reed body 10611 is formed with a second elongated opening extending along the first direction a and having two closed ends, the second elongated opening includes two third inner edges 10601 oppositely disposed along the first direction a and two fourth inner edges 10602 oppositely disposed along the beam passing direction, the second support piece 10612 is disposed in the second elongated opening and one end of the second support piece 10612 is connected to one of the third inner edges 10601, the other end of the second support piece 10612 is spaced apart from the other third inner edge 10601 along the first direction a, and the second support piece 10612 and the two fourth inner edges 10602 are disposed at intervals along the light beam passing direction, the second reed body 10611 is used for connecting with the base 104, and the second support piece 10612 is used for connecting with the outer side surface of the second frame plate 1032 or the outer side surface of the fourth frame plate 1034.

In this embodiment, the first reed 1051 comprises two parts, one part being a first reed body 10511 and the other part being a first support piece 10512. First, as for the first supporting sheet 10512, the first supporting sheet 10512 extends in the second direction B and has a long shape, and thus has good rigidity in the beam insertion direction, and by connecting the first supporting sheet 10512 to the first outer side surface 1091 in a relatively bonded manner, it is possible to provide good support for the second moving layer 109 in the beam insertion direction and prevent the second moving layer 109 from wobbling in the beam insertion direction; next, in addition to the function of connecting the first movable layer 103, the first reed body 10511 also has an important function of being elastically deformable along the first direction a, and specifically, in the process of reciprocating the second movable layer 109 along the first direction a, two first deformable arms 10514 of the first reed body 10511 adjacent to the first support piece 10512 can be deformed along the first direction a, thereby restoring and improving the reciprocating stability of the second movable layer 109.

And/or second reed 1061 can also include two portions, one portion being second reed body 10611 and the other portion being second support piece 10612. First, for the second support piece 10612, the second support piece 10612 extends along the first direction a and has a long shape, so that the second support piece 10612 has good rigidity in the beam passing direction, and by connecting the second support piece 10612 to the outer side surface of the second frame plate 1032 or the outer side surface of the fourth frame plate 1034 in a relatively attached manner, the first moving layer 103 can be supported well in the beam passing direction, and the first moving layer 103 is stably supported on the base 104, so that the first moving layer 103 is prevented from shaking in the beam passing direction; next, in addition to the function of connecting the first movable layer 103 and the base 104, the second reed body 10611 also has an important function of being elastically deformable along the second direction B, and specifically, in the process of reciprocating the first movable layer 103 along the first direction B, two second deformable arms 10613 of the second reed body 10611 adjacent to the second support piece 10612 can be deformed along the second direction B, so as to perform the functions of resetting and improving the stability of reciprocating the first movable layer 103.

It should be noted that, the first supporting sheet 10512 and the two second inner edges 10502 are both disposed at intervals along the beam penetrating direction, so that the first supporting sheet 10512 does not structurally interfere with the two first deforming arms 10514 during the reciprocating movement of the second moving layer 109 along the first direction a, thereby ensuring that the first deforming arms 10514 can be deformed normally; similarly, the second supporting piece 10612 and the two fourth inner edges 10602 are disposed at intervals along the light beam passing direction, so that the second supporting piece 10612 does not interfere with the two second deforming arms 10613 during the reciprocating movement of the first moving layer 103 along the second direction B, thereby ensuring that the second deforming arm 10613 can be deformed normally.

Referring to fig. 1, 2 and 3, two first locking grooves 10510 are respectively formed at two ends of the first reed body 10511, the first outer side surface 1091 includes a first portion and a second portion, the first portion is attached to and connected with the first supporting sheet 10512, a first locking block 10513 is disposed on the second portion, a second locking block 1030 is disposed on the inner side of the second frame plate 1032 or the inner side of the fourth frame plate 1034, and the two first locking grooves 10510 are respectively locked with the first locking block 10513 and the second locking block 1030; two second clamping grooves 10610 are formed at two ends of the second reed body 10611, the outer side surface of the second frame plate 1032 or the outer side surface of the fourth frame plate 1034 are connected to each other and include a third portion and a fourth portion, the third portion is relatively attached to the second support plate 10612, the fourth portion is provided with a third clamping block 1035, the base 104 is provided with a fourth clamping block 1040, and the two second clamping grooves 10610 are respectively clamped to the third clamping block 1035 and the fourth clamping block 1040. Through setting up above-mentioned fixture block and the draw-in groove structure of mutually supporting, played good positioning action, be convenient for improve the convenience of reed installation.

Referring to fig. 1 and 2, the base 104 includes a base frame 1041 and a base bottom plate 1042, the base bottom plate 1042 is disposed in the base frame 1041; the second moving layer 109 is formed with a first opening 1092, the diffusion sheet 101 is disposed in the first opening 1092 in a blocking manner, the base plate 1042 is formed with a second opening 10420, and the second opening 10420 is disposed opposite to the first opening 1092 along the light beam passing direction.

In this embodiment, the base 104 is disposed as two parts of the base frame 1041 and the base bottom plate 1042, and the base bottom plate 1042 is sealed and disposed in the base frame 1041; the stability of the base 104 structure can be effectively improved, and the diffusion sheet assembly can be well supported; secondly, a first opening 1092 for installing the diffusion sheet 101 is formed on the second moving layer 109, so that the weight of the second moving layer 109 is reduced, and the light and thin design of the diffusion sheet assembly is facilitated; in addition, a second opening 10420 opposite to the first opening 1092 is formed in the base bottom plate 1042, so that the light beam can pass through the diffusion sheet assembly conveniently, and the light beam is prevented from being stopped.

Specifically, referring to fig. 1, the base frame 1041 includes a base frame body 10411 and a base frame side plate 10412 that are connected to each other, the first movable layer 103 and the base frame body 10411 are disposed at an interval in the light beam passing direction, the base bottom plate 1042 is plugged in the base frame body 10411, the base frame side plate 10412 extends along the second direction B and protrudes out of the base frame body 10411 in the light beam passing direction, a fourth fastening block 1040 is disposed at an end of the base frame side plate 10412 along the second direction B to fasten with a corresponding second fastening groove 10610 on a corresponding second fastening block 10611. That is, by providing the base frame 1041 in the L-shaped structure, the design in which the first movable layer 103 is substantially flush with the base frame side plate 10412 can be utilized, and the light and thin design of the diffuser sheet assembly can be utilized, in addition to the function of connecting the first movable layer 103 and facilitating the connection of the second spring 1061.

As shown in fig. 1 and 5, the first driving unit 107 includes a first driving magnet 1071 and a first current conductor 1072 that are provided to face each other, one of the first driving magnet 1071 and the first current conductor 1072 is provided to the second moving layer 109, and the other is provided to the base 104; and/or the second driving portion 108 includes a second driving magnet 1081 and a second electrical conductor 1082, which are disposed oppositely, one of the second driving magnet 1081 and the second electrical conductor 1082 is disposed on the first moving layer 103, and the other is disposed on the base 104.

For example, the first driving magnet 1071 is disposed on the second moving layer 109 and the N-pole and S-pole of the first driving magnet 1071 are arranged along the beam passing direction, the first electrifying conductor 1072 is disposed on the base 104 and disposed opposite to the first driving magnet 1071, and the first straight line segment 10720 of the first electrifying conductor 1072 extends along the second direction B; and/or the second driving portion 108 includes a second driving magnet 1081 and a second current-carrying body 1082, the second driving magnet 1081 is disposed on the first moving layer 103, N-pole and S-pole of the second driving magnet 1081 are arranged along the light beam passing direction, the second current-carrying body 1082 is disposed on the base 104 and is opposite to the second driving magnet 1081, and a second straight line 10820 of the second current-carrying body 1082 extends along the first direction a.

In this embodiment, it is known that the first straight line segment 10720 of the first current conductor 1072 extending in the second direction B is located in the magnetic field generated by the first driving magnet 1071 in which the N-pole and the S-pole are arranged in the light beam passing direction, and according to the left-hand rule, the first straight line segment 10720 receives an ampere force in the first direction a, and the first driving magnet 1071 receives a reaction force in the direction opposite to the first straight line segment 10720, and the second moving layer 109 can reciprocate in the first direction a because the first driving magnet 1071 is provided on the second moving layer 109. Similarly, the left-hand rule can also be applied to deduce: the second driving portion 108 configured as the second driving magnet 1081 and the second conductive body 1082 can drive the first moving layer 103 to reciprocate in the second direction B.

By providing the first driving portion 107 and the second driving portion 108 with the driving magnets and the current-carrying conductors, in addition to stable driving, noise decibels can be reduced as much as possible, and the user experience of the diffuser plate assembly in specific product applications can be improved.

Optionally, referring to fig. 1 and 2, the base 104 includes a base frame 1041 and a base bottom plate 1042, the base bottom plate 1042 is sealed and disposed in the base frame 1041; a first opening 1092 is formed on the second moving layer 109, the diffusion sheet 101 is disposed in the first opening 1092 in a blocking manner, a second opening 10420 is formed on the base bottom plate 1042, and the second opening 10420 is disposed opposite to the first opening 1092 along the light beam passing direction; the first and second

current conductors

1072 and 1082 are disposed on the inner surface of the base bottom plate 1042, the second moving layer 109 has a first mounting groove 1070 for mounting the first driving magnet 1071 thereon, and the first moving layer 103 has a second mounting groove 1080 for mounting the second driving magnet 1081 thereon.

In this embodiment, by disposing both the first current conductor 1072 and the second current conductor 1082 on the inner surface of the base chassis 1042, it is possible to effectively utilize the arrangement space, improve the compactness of the structural arrangement, and also to reduce the size of the arrangement in the beam passing direction, facilitating the design of the diffuser sheet assembly to be thin and light; the second moving layer 109 and the first moving layer 103 are respectively formed with a first mounting groove 1070 and a second mounting groove 1080 for mounting the first driving magnet 1071 and the second driving magnet 1081, so that the mounting convenience of the first driving magnet 1071 and the second driving magnet 1081 is improved, and the diffusion sheet assembly is designed to be lightweight.

Referring to fig. 1, the diffuser plate assembly further includes a flexible circuit board 1043 laid on the inner surface of the base bottom plate 1042, and the first and second current-carrying

conductors

1072 and 1082 are connected to the flexible circuit board 1043. In this embodiment, the current conductor can be formed by winding the existing electrical connection wire on the flexible circuit board 1043, and does not occupy the height of the diffusion sheet assembly in the thickness direction, and the current conductor is directly arranged on the flexible circuit board 1043 to become a part of the flexible circuit board 1043, so that the conventional coil assembling procedures such as winding, welding, dispensing and fixing can be omitted, and the convenience of operation is improved.

In another embodiment, referring to fig. 1, 2 and 5, the diffusion sheet assembly further includes a controller, a first detection element 110 and a first detection element, the first detection element 110 is used for detecting first motion information of the second moving layer 109, the first detection element is used for detecting second motion information of the first moving layer 103, and the first detection element 110, the first detection element, the first current conductor 1072 and the second current conductor 1082 are all electrically connected to the controller; the controller is configured to control the operation of the first energizing conductor 1072 based on the first motion information detected by the first detecting element 110, and to control the operation of the second energizing conductor 1082 based on the second motion information detected by the first detecting element.

In this embodiment, by providing the first detection element 110 for detecting the first motion information of the second moving layer 109 and the first detection element for detecting the second motion information of the first moving layer 103, the motion states of the second moving layer 109 and the first moving layer 103 can be monitored in real time, that is, the motion states of the diffusion sheet 101 in the first direction a and the second direction B can be monitored; on this basis, by providing a controller electrically connected to the detection element and the current-carrying conductor, when the detection element detects that the motion state of the first moving layer 103 and/or the second moving layer 109 is abnormal and needs to be adjusted, the controller adjusts the current magnitude and direction of the second current-carrying conductor 1082 corresponding to the first moving layer 103, and/or, the magnitude and direction of the current of the first current-carrying conductor 1072 corresponding to the second moving layer 6 are adjusted, thereby adjusting the magnitude and direction of the force applied to first mobile layer 103 and/or second mobile layer 109, and further, the motion states of the first moving layer 103 and the second moving layer 109, that is, the motion states of the diffusion sheet 101 in the first direction a and the second direction B, are adjusted.

Alternatively, the first detection element 110 and the first detection element may be configured as a Tunnel magnetoresistive sensor (TMR), the conductive conductor is configured as a ring-shaped copper coil, the Tunnel magnetoresistive sensor is disposed inside the ring-shaped copper coil to detect the intensity of the magnetic field and feed the detected intensity back to the controller, and the controller can determine and control the motion conditions of the first movable layer 103 and the second movable layer 109 according to the change of the intensity of the magnetic field. The present disclosure is not limited to a particular type of the first sensing element 110 and the first sensing element.

Alternatively, referring to fig. 1 and 5, the first driving magnet 1071 includes a first individual magnet 10711 and a second individual magnet 10712 sequentially arranged in the first direction a, N poles and S poles of the first individual magnet 10711 and the second individual magnet 10712 are both arranged in the beam penetration direction, and magnetic pole directions of the first individual magnet 10711 and the second individual magnet 10712 are opposite; the first energizing conductor 1072 is configured as a first energizing coil including two first straight segments 10720 extending in the second direction B and disposed at an interval in the first direction a and opposite in current direction, the two first straight segments 10720 being disposed to oppose the first and second unit magnets 10711 and 10712, respectively; the second driving magnet 1081 includes a third individual magnet 10811 and a fourth individual magnet 10812 sequentially arranged in the second direction B, N poles and S poles of the third individual magnet 10811 and the fourth individual magnet 10812 are both arranged in the light beam passing direction, and magnetic pole directions of the third individual magnet 10811 and the fourth individual magnet 10812 are opposite; the second current-carrying conductor 1082 is configured as a second current-carrying coil including two second straight line segments 10820 extending in the first direction a and arranged at intervals in the second direction B with opposite current directions, the two second straight line segments 10820 being arranged to be opposed to the third individual magnet 10811 and the fourth individual magnet 10812, respectively.

In this embodiment, under the action of the first individual magnet 10711 and the second individual magnet 10712, both the first straight line segments 10720 of the first energization coil receive an ampere force, and the directions of the ampere forces received by the first straight line segments 10820 extend in the first direction a and are in the same direction, correspondingly, both the first individual magnet 10711 and the second individual magnet 10712 receive an ampere force extending in the first direction a and in the same direction, and since the first driving magnet 107 is disposed on the second moving layer 109, the second moving layer 109 receives an ampere force extending in the first direction a, and the second moving layer 109 drives the diffusion sheet 101 thereon to reciprocate in the first direction a.

Similarly, under the action of the third individual magnet 10811 and the fourth individual magnet 10812, the two second straight line segments 10820 of the second electrified coil both receive an ampere force, and the directions of the ampere forces received by the two second straight line segments 10820 both extend along the second direction B and are in the same direction, correspondingly, the third individual magnet 10811 and the fourth individual magnet 10812 both receive an ampere force extending along the second direction B and are in the same direction, and since the second driving magnet 108 is disposed on the first moving layer 103, the first moving layer 103 receives an ampere force extending along the first direction B, and the first moving layer 103 drives the second moving layer 109 and the diffusion sheet 101 to move back and forth along the second direction a.

First circular telegram coil can make full use of the magnetic field that first monomer magnet 10711 and second monomer magnet 10712 produced in thickness direction both sides, and first drive magnet 1071's design adopts two opposite monomer magnets of polarity can obtain high magnetic field utilization ratio, first circular telegram coil can adopt runway shape design, first monomer magnet 10711 and second monomer magnet 10712 size on second direction B can be equal with foretell first straight line segment 10720 length, compress first circular telegram coil invalid arc section to the shortest, improve first circular telegram coil utilization ratio, and this first drive magnet 1071, the design of first circular telegram coil also can compress the design in diffusion piece subassembly thickness direction as far as possible, be convenient for the frivolous design of diffusion piece subassembly.

Similarly, the second current-carrying coil can fully utilize the magnetic fields generated by the third single magnet 10811 and the fourth single magnet 10812 on both sides of the thickness direction, and the second driving magnet 1081 can obtain a very high magnetic field utilization rate by using two single magnets with opposite polarities, the second current-carrying coil can adopt a racetrack-shaped design, the size of the third single magnet 10811 and the fourth single magnet 10812 in the first direction a can be equal to the length of the second straight line segment 10820, so as to compress the invalid arc segment of the second current-carrying coil to the minimum, thereby improving the second current-carrying rate, and the design of the first driving magnet 1081 and the second current-carrying coil can also compress the design in the thickness direction of the diffusion sheet assembly as much as possible, thereby facilitating the light and thin design of the diffusion sheet assembly.

Referring to fig. 1 and 5, the first driver magnet 1071 further includes a first neutral layer 10713 disposed between the first individual magnet 10711 and the second individual magnet 10712, and the second driver magnet 1081 further includes a second neutral layer 10813 disposed between the third individual magnet 10811 and the fourth individual magnet 10812;

the first neutral layer 10713 is configured to: the first neutral layer 10713 can prevent the first straight line segment 10720 opposing the first individual magnet 10711 from opposing the second individual magnet 10712 and can prevent the first straight line segment 10720 opposing the second individual magnet 10712 from opposing the first individual magnet 10711 during the first driving magnet 1071 reciprocates in the first direction a relative to the first energized coil; the second neutral layer 10813 is configured to: during the reciprocating movement of the second drive magnet 1081 relative to the second energized coil in the second direction B, the second neutral layer 10813 can be such that the second straight line segment 10820 opposing the third individual magnet 10811 does not oppose the fourth individual magnet 10812, and can be such that the second straight line segment 10820 opposing the fourth individual magnet 10812 does not oppose the third individual magnet 10811.

By providing the first neutral layer 10713 between the first individual magnet 10711 and the second individual magnet 10712, in the process of the first drive magnet 1071 reciprocating in the first direction a with respect to the first energized coil, the first neutral layer 10713 can prevent the first straight line segment 10720 opposed to the first individual magnet 10711 from being opposed to the second individual magnet 10712, and can prevent the first straight line segment 10720 opposed to the second individual magnet 10712 from being opposed to the first individual magnet 10711, thereby preventing the generation of resistance force opposite to the moving direction of the second moving layer 109 and improving the fluency of the reciprocating movement of the second moving layer 109 in the first direction a.

Similarly, by providing the second neutral layer 10813 between the third individual magnet 10811 and the fourth individual magnet 10812, the second neutral layer 10813 can prevent the second straight line segment 10820 facing the third individual magnet 10811 from facing the fourth individual magnet 10812 and prevent the second straight line segment 10820 facing the fourth individual magnet 10812 from facing the third individual magnet 10811 during the reciprocating movement of the second driving magnet 1071 relative to the second energized coil in the second direction B, thereby preventing the generation of resistance force in the direction opposite to the direction in which the first movable layer 103 moves and improving the smoothness of the reciprocating movement of the first movable layer 103 in the second direction B.

Referring to fig. 6, the diffusion sheet assembly further includes a second moving layer 109, a first guiding support 111 and a second guiding support 112, the first moving layer 103 is configured as a frame structure, the diffusion sheet 101 is disposed on the second moving layer 109, the first guiding support 111 is disposed on the frame structure and supports the second moving layer 109 in the frame structure along the light beam passing direction, the first elastic member 105 connects the second moving layer 109 and the first moving layer 103, and the second moving layer 109 and the frame structure are disposed at an interval in the first direction a; the second guiding support 112 is disposed on the base 104 and supports the first movable layer 103 on the base 104 along the beam passing direction, and the second elastic member 106 connects the base 104 and the first movable layer 103.

In this embodiment, the first guide support 111 may effectively support the second moving layer 109 within the frame structure and may ensure that the second moving layer 109 is able to move back and forth along the first direction a; the second guide support 112 can effectively support the first mobile layer 103 on the base 104 and can ensure that the first mobile layer 103 can reciprocate in the second direction B relative to the base 104.

Referring to fig. 6, the first guiding support 111 includes two first guiding support columns 1110 disposed on the first moving layer 103 at intervals along the beam passing direction, the two first guiding support columns 1110 may extend along the second direction B, and the second moving layer 109 is movably disposed between the two first guiding support columns 1110 along the first direction a; and/or the second guiding support 112 includes two second guiding support columns 1120 disposed on the base 104 at intervals along the beam penetrating direction, the two second guiding support columns 1120 may extend along the first direction a, and the first moving layer 103 is movably disposed between the two second guiding support columns 1120 along the second direction B. The first guiding support column 1110 and the second guiding support column 1120 are simple in structure, can play a good guiding and supporting role, and facilitate the light-weight design of the diffuser assembly. However, the present disclosure does not limit the specific structural form of the first and second guide supports 111 and 112.

The structure of the first spring 1051 and the second spring 1061 is changed correspondingly on the basis of the first guide support 111 and the second guide support 112, that is, the first guide support 111 replaces the first support piece 10512, the second guide support 112 replaces the second support piece 10612, and the structure of the rest parts is similar to the first spring 1051 and the second spring 1061, which can be referred to as fig. 6 specifically.

The present disclosure also provides a light beam spot-dispersing device, as shown in fig. 7, which includes a light beam emitter 300, a beam-reducing assembly 400, a light-homogenizing assembly 500, and a diffuser 600 disposed between the beam-reducing assembly 400 and the light-homogenizing assembly 500, the diffuser 600 including the above-described diffuser assembly.

Alternatively, the beam reduction assembly 400 may be a set of galilean telescope, the objective lens is a positive meniscus lens, the secondary lens is a negative biconcave lens, and the dodging assembly 500 may employ a fly eye lens or a dodging rod.

In addition, as shown in fig. 7, a collimating element 700 may be disposed between the scattering element 600 and the light homogenizing assembly 500, and the collimating element 700 may be a sheet or a group of condensing lenses, and the light beam speckle reduction device can utilize different phase divergence angles at all positions on the diffusion sheet 101 to provide better speckle reduction effect at the same size.

The present disclosure additionally provides a projector including the above-mentioned light beam speckle reduction device, which has all the advantages of the above-mentioned diffuser plate assembly and light beam speckle reduction device, and will not be described herein in any way.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the disclosure does not separately describe various possible combinations in order to avoid unnecessary repetition.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. A diffusion sheet assembly is characterized by comprising a first moving layer (103), a base (104), a first elastic member (105), a second elastic member (106) and a diffusion sheet (101) for light beams to penetrate through, and further comprising a first driving part (107) and a second driving part (108);

the first elastic member (105) connects the diffusion sheet (101) and the first moving layer (103), and the first elastic member (105) is configured to: is deformable along a first direction (A) parallel to the diffusion sheet (101) so as to enable the diffusion sheet (101) to move along the first direction (A) with respect to the first moving layer (103);

the second elastic member (106) connects the first moving layer (103) and the base (104), and the second elastic member (106) is configured to: -being deformable along a second direction (B) parallel to the diffusion sheet (101) to enable the first mobile layer (103) and the diffusion sheet (101) to move along the second direction (B) with respect to the base (104);

the first driving unit (107) is configured to drive the diffusion sheet (101) to move in the first direction (A) with respect to the first moving layer (103), and the second driving unit (108) is configured to drive the first moving layer (103) and the diffusion sheet (101) to move in the second direction (B) with respect to the base (104), the first direction (A) and the second direction (B) intersecting each other.

2. Diffuser assembly according to claim 1, further comprising a second moving layer (109), wherein the first moving layer (103) is configured as a frame structure, wherein the diffuser (101) is disposed on the second moving layer (109), wherein the first elastic member (105) connects the frame structure and the second moving layer (109) and supports the second moving layer (109) in a beam-passing direction, and wherein the second moving layer (109) is disposed at a distance from the frame structure in the first direction (a), and wherein the second elastic member (106) is configured to support the first moving layer (103) in the beam-passing direction and connect to the base (104) such that the first moving layer (103) and the base (104) are disposed at a distance in the beam-passing direction;

the first driving part (107) is used for driving the second moving layer (109) to reciprocate in the first direction (A) in the frame structure and relative to the frame structure, and the second driving part (108) is used for driving the first moving layer (103) and the second moving layer (109) to reciprocate in the second direction (B) relative to the base (104).

3. Diffuser plate assembly according to claim 2, wherein the frame structure comprises a first frame plate (1031), a second frame plate (1032), a third frame plate (1033), and a fourth frame plate (1034) connected in series and end-to-end, the first frame plate (1031) and the third frame plate (1033) being disposed opposite in the first direction (a), the second frame plate (1032) and the fourth frame plate (1034) being disposed opposite in the second direction (B); the second moving layer (109) comprises two first outer sides (1091) arranged opposite to each other along the first direction (a), the two first outer sides (1091) being arranged at intervals along the first direction (a) with the first frame plate (1031) and the third frame plate (1033), respectively;

the first elastic element (105) comprises two first leaves (1051) oppositely arranged along the first direction (a), one of the first leaves (1051) connecting one of the first outer lateral faces (1091) with one of the second frame plate (1032) and the fourth frame plate (1034), the other of the first leaves (1051) connecting the other of the first outer lateral faces (1091) with one of the second frame plate (1032) and the fourth frame plate (1034); the second resilient member (106) comprises two second resilient tabs (1061) oppositely disposed along the second direction (B), wherein one of the second resilient tabs (1061) connects the outer side surface of the second frame plate (1032) to the base (104), and the other of the second resilient tabs (1061) connects the outer side surface of the fourth frame plate (1034) to the base (104).

4. The diffuser member assembly of claim 3,

the first reed (1051) comprises a first reed body (10511) and a first support sheet (10512) both extending along the second direction (B), the first reed body (10511) is formed with a first long mouth extending along the second direction (B) and having two closed ends, the first long mouth comprises two first inner edges (10501) oppositely disposed along the second direction (B) and two second inner edges (10502) oppositely disposed along the beam passing direction, the first support sheet (10512) is disposed in the first long mouth and one end of the first support sheet (10512) is connected to one of the first inner edges (10501), the other end of the first support sheet (10512) is spaced from the other first inner edge (10501) along the second direction (B), and the first support sheet (10512) and the two second inner edges (10502) are both spaced along the beam passing direction, -the first reed body (10511) is for connection with the second frame plate (1032) or the fourth frame plate (1034), -the first support sheet (1051) is for connection with the first outer side face (1091);

and/or the second reed (1061) comprises a second reed body (10611) extending along the first direction (a) and a second support piece (10612), the second reed body (10611) is formed with a second elongated opening extending along the first direction (a) and having two closed ends, the second elongated opening comprises two third inner edges (10601) oppositely disposed along the first direction (a) and two fourth inner edges (10602) oppositely disposed along the beam passing direction, the second support piece (10612) is disposed in the second elongated opening and one end of the second support piece (10612) is connected to one of the third inner edges (10601), the other end of the second support piece (10612) is spaced apart from the other third inner edge (10601) along the first direction (a), and the second support piece (10612) and the two fourth inner edges (10602) are both spaced apart along the beam passing direction, the second reed body (10611) is for connection with the base (104), and the second support piece (10612) is for connection with an outer side of the second frame plate (1032) or an outer side of the fourth frame plate (1034).

5. The diffuser element assembly of claim 4, wherein two first locking grooves (10510) are respectively formed at two ends of the first reed body (10511), the first outer side surface (1091) comprises a first portion and a second portion, the first portion is attached and connected opposite to the first supporting piece (10512), a first locking block (10513) is arranged on the second portion, a second locking block (1030) is arranged on the inner side of the second frame plate (1032) or the inner side of the fourth frame plate (1034), and the two first locking grooves (10510) are respectively locked with the first locking block (10513) and the second locking block (1030);

and/or two second clamping grooves (10610) are formed at two ends of the second reed body (10611), the outer side surface of the second frame plate (1032) or the outer side surface of the fourth frame plate (1034) comprises a third part and a fourth part, the third part is relatively attached to the second support piece (10612), a third clamping block (1035) is arranged on the fourth part, a fourth clamping block (1040) is arranged on the base (104), and the two second clamping grooves (10610) are respectively clamped with the third clamping block (1035) and the fourth clamping block (1040).

6. The diffuser assembly of claim 5, wherein the base (104) comprises a base frame (1041) and a base floor (1042), the base floor (1042) being sealingly disposed within the base frame (1041); a first opening (1092) is formed in the second moving layer (109), the diffusion sheet (101) is arranged in the first opening (1092) in a blocking manner, a second opening (10420) is formed in the base bottom plate (1042), and the second opening (10420) is arranged opposite to the first opening (1092) along the light beam passing direction.

7. The diffuser plate assembly of claim 6, wherein the base frame (1041) comprises a base frame body (10411) and a base frame side plate (10412) which are connected to each other, the first movable layer (103) and the base frame body (10411) are arranged at intervals in a light beam passing direction, the base bottom plate (1042) is sealed and arranged in the base frame body (10411), the base frame side plate (10412) extends along the second direction (B) and protrudes out of the base frame body (10411) in the light beam passing direction, and the end of the base frame side plate (10412) along the second direction (B) is provided with the fourth latch (1040) to be latched with the corresponding second latch slot (10610) on the corresponding second reed body (10611).

8. The diffuser sheet assembly according to claim 2, wherein the first driving portion (107) includes a first driving magnet (1071) and a first current conductor (1072) disposed in opposition, one of the first driving magnet (1071) and the first current conductor (1072) being disposed on the second moving layer (109) and the other being disposed on the base (104); and/or the presence of a gas in the gas,

the second driving portion (108) includes a second driving magnet (1081) and a second current-carrying conductor (1082) that are disposed opposite to each other, and one of the second driving magnet (1081) and the second current-carrying conductor (1082) is disposed on the first moving layer (103) and the other is disposed on the base (104).

9. The diffuser assembly of claim 8, wherein the base (104) comprises a base frame (1041) and a base floor (1042), the base floor (1042) being sealingly disposed within the base frame (1041); a first opening (1092) is formed in the second moving layer (109), the diffusion sheet (101) is arranged in the first opening (1092) in a blocking manner, a second opening (10420) is formed in the base bottom plate (1042), and the second opening (10420) is arranged opposite to the first opening (1092) along the light beam passing direction;

the first current conductor (1072) and the second current conductor (1082) are both arranged on the inner surface of the base bottom plate (1042), a first mounting groove (1070) for mounting the first driving magnet (1071) is formed on the second moving layer (109), and a second mounting groove (1080) for mounting the second driving magnet (1081) is formed on the first moving layer (103);

preferably, the diffuser assembly further comprises a flexible circuit board (1043) laid on an inner surface of the base bottom plate (1042), the first current-carrying conductor (1072) and the second current-carrying conductor (1082) are both connected to the flexible circuit board (1043);

preferably, the diffuser assembly further comprises a controller, a second detection element for detecting first motion information of the second moving layer (109), and a second detection element for detecting second motion information of the first moving layer (103), the second detection element, the first current-carrying conductor (1072), and the second current-carrying conductor (1082) all being electrically connected to the controller;

the controller is used for controlling the first electrifying conductor (1072) to work according to the first motion information detected by the second detection element, and is used for controlling the second electrifying conductor (1082) to work according to the second motion information detected by the second detection element.

10. The diffuser assembly of claim 8, wherein the first driving magnet (1071) includes a first individual magnet (10711) and a second individual magnet (10712) arranged in sequence along the first direction (a), the N-pole and S-pole of the first individual magnet (10711) and the second individual magnet (10712) are arranged along a beam passing direction, and the magnetic pole directions of the first individual magnet (10711) and the second individual magnet (10712) are opposite;

the first energizing conductor (1072) is configured as a first energizing coil including two first straight line segments (10720) extending in the second direction (B) and disposed at intervals in the first direction (a) and having opposite current directions, the two first straight line segments (10720) being for being disposed opposite to the first unit magnet (10711) and the second unit magnet (10712), respectively;

and/or the second driving magnet (1081) comprises a third single magnet (10811) and a fourth single magnet (10812) which are sequentially arranged along the second direction (B), the N pole and the S pole of the third single magnet (10811) and the fourth single magnet (10812) are both arranged along the light beam passing direction, and the magnetic pole directions of the third single magnet (10811) and the fourth single magnet (10812) are opposite;

the second current-carrying conductor (1082) is configured as a second current-carrying coil, the second current-carrying coil includes two second straight line segments (10820) extending in the first direction (A) and arranged at intervals in the second direction (B) and having opposite current directions, and the two second straight line segments (10820) are respectively used for being arranged opposite to the third single magnet (10811) and the fourth single magnet (10812).

11. The diffuser assembly of claim 10, wherein the first drive magnet (1071) further comprises a first neutral layer (10713) disposed between the first unitary magnet (10711) and the second unitary magnet (10712), the first neutral layer (10713) configured to: the first neutral layer (10713) is configured such that the first straight line segment (10720) opposing the first individual magnet (10711) does not oppose the second individual magnet (10712) and such that the first straight line segment (10720) opposing the second individual magnet (10712) does not oppose the first individual magnet (10711) during the reciprocal movement of the first drive magnet (1071) relative to the first energized coil in the first direction (a);

and/or the second drive magnet (1081) further comprises a second neutral layer (10813) disposed between the third unitary magnet (10811) and the fourth unitary magnet (10812); the second neutral layer (10813) is configured to: the second neutral layer (10813) is configured such that the second straight line segment (10820) opposing the third individual magnet (10811) does not oppose the fourth individual magnet (10812), and such that the second straight line segment (10820) opposing the fourth individual magnet (10812) does not oppose the third individual magnet (10811), during the second driving magnet (1081) reciprocates in the second direction (B) relative to the second electrified coil.

12. Diffuser assembly according to claim 1, characterized in that it further comprises a second moving layer (109), a first guiding support (111) and a second guiding support (112), said first moving layer (103) being configured as a frame structure, said diffuser (101) being arranged at said second moving layer (109), said first guiding support (111) being arranged on said frame structure and supporting said second moving layer (109) within said frame structure along a beam passage direction, said first elastic member (105) connecting said second moving layer (109) and said first moving layer (103), and said second moving layer (109) being arranged spaced from said frame structure in said first direction (a);

the second guide support (112) is arranged on the base (104) and supports the first moving layer (103) on the base (104) along a light beam penetrating direction, and the second elastic piece (106) is connected with the base (104) and the first moving layer (103);

preferably, the first guiding support (111) comprises two first guiding support pillars (1110) arranged on the first moving layer (103) at intervals along a beam passing direction, and the second moving layer (109) is movably arranged between the two first guiding support pillars (1110) along the first direction (a);

and/or the second guiding support (112) comprises two second guiding support columns (1120) arranged on the base (104) at intervals along the beam penetration direction, and the first moving layer (103) is movably arranged between the two second guiding support columns (1120) along the second direction (B).

13. A light beam spot-dissipating arrangement comprising a light beam emitter (300), a attenuator assembly (400), a dodging assembly (500) and a diffuser (600) arranged between the attenuator assembly (400) and the dodging assembly (500), characterized in that the diffuser (600) comprises a diffuser assembly according to any of claims 1-12.

14. A projector comprising the beam despeckle device according to claim 13.