CN113641063A

CN113641063A - Light uniformizing device, projector optical machine and projector

Info

Publication number: CN113641063A
Application number: CN202110937531.3A
Authority: CN
Inventors: 闫国枫; 徐旭升; 欧阳剑; 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: CN113641063B

Abstract

The present disclosure relates to a light uniformizing apparatus, a projector light engine and a projector, the light uniformizing apparatus including a light source for emitting a light beam; along the propagation direction of the light beam, a first light homogenizing assembly, a second light homogenizing assembly and at least one diffusion sheet assembly are arranged, wherein the light beam penetrates through the first light homogenizing assembly, the second light homogenizing assembly and the diffusion sheet assembly; the first dodging assembly is used for converting the light beam at the incident end into a plurality of light beams with respective optical axes and emitting the light beams from the emergent end; the second dodging component is used for reflecting the light beam at the incident end for multiple times and emitting the light beam from the emergent end; the diffusion sheet assembly comprises a diffusion sheet and a driving part, the diffusion sheet is used for light beams to penetrate through, and the driving part is used for driving the diffusion sheet to move in a direction perpendicular to the light beams; and/or the diffusion sheet assembly comprises a diffusion sheet and a refraction piece, wherein the diffusion sheet is used for allowing the light beams to penetrate through, and the refraction piece is arranged on the light inlet side of the diffusion sheet and is used for refracting the light beams to different positions of the diffusion sheet. The light homogenizing device can homogenize light beams effectively and reduce color spots.

Description

Light uniformizing device, projector optical machine and projector

Technical Field

The disclosure relates to the technical field of projection display, in particular to a light uniformizing device, a projector optical machine and a projector.

Background

In the prior art, a problem that manufacturers are concerned about how to design a projector with a simple structure, uniform color and good speckle eliminating effect is always.

The current solutions are mainly implemented with diffusers and some dynamic optical elements, but the effect is not ideal or the volume and cost are not satisfactory, and even more, the dither design of the projection screen is added, which does not use the user experience very much.

Some optical elements such as a conventional compound eye are used for integrating and homogenizing light, but the effect is not ideal, the light beams cannot be homogenized well, the picture at the projection position still has color spots, and the high temporal and spatial coherence of the light beams cannot be reduced.

Disclosure of Invention

The purpose of this disclosure is to provide a dodging device, projecting apparatus ray apparatus and projecting apparatus, this dodging device can homogenize, reduce the high temporal and spatial coherence of light beam, reduce the appearance of color spot effectively to the light beam.

In order to achieve the above object, the present disclosure provides a light unifying apparatus including:

a light source for emitting a light beam;

along the propagation direction of the light beam, a first light homogenizing assembly, a second light homogenizing assembly and at least one diffusion sheet assembly are arranged, wherein the light beam penetrates through the first light homogenizing assembly, the second light homogenizing assembly and the diffusion sheet assembly;

the first dodging assembly is used for converting the light beams at the incident end into a plurality of light beams with respective optical axes and emitting the light beams from the emergent end of the first dodging assembly so as to dodge the light beams in area;

the second dodging component is used for reflecting the light beam at the incident end for multiple times and emitting the light beam from the emergent end so as to dodge the light beam at an angle;

the diffusion sheet assembly comprises a diffusion sheet and a driving part, the diffusion sheet is used for light beams to penetrate through, and the driving part is used for driving the diffusion sheet to move in a direction perpendicular to the light beams; and/or the presence of a gas in the gas,

the diffusion sheet assembly comprises a diffusion sheet and a refraction piece, the diffusion sheet is used for light beams to penetrate through, and the refraction piece is arranged on the light inlet side of the diffusion sheet and used for refracting the light beams to different positions of the diffusion sheet.

Optionally, the dodging device further includes a first lens group, the first dodging assembly includes a first dodging element, the second dodging assembly includes a third dodging element, the first lens group and the third dodging element are sequentially disposed in the beam propagation direction, and the first lens group is configured to image the beam at the exit end of the first dodging element to the entrance end of the second dodging element;

preferably, the dodging device further includes a second lens group, the first dodging assembly further includes a second dodging element, in the light beam propagation direction, the third dodging element, the second lens group and the second dodging element are sequentially disposed, and the second lens group is configured to image the light beam at the exit end of the third dodging element to the incident end of the second dodging element.

Optionally, the second dodging assembly further comprises a fourth dodging element disposed between the first dodging element and the first lens group, and the first lens group is configured to image a light beam at an exit end of the fourth dodging element to an incident end of a third dodging element;

preferably, the dodging device further comprises a collimating lens group for collimating the light beam, and the collimating lens group is disposed between the first lens group and the fourth dodging element;

preferably, first even light component includes even light lens group, fourth even light component includes optical rod group, even light lens group includes a plurality of even light microlens, optical rod group includes a plurality of sub-optical rod, collimating lens group includes a plurality of collimation microlens, and is a plurality of even light microlens sets up respectively one-to-one in a plurality of sub-optical rod's income light side, and is a plurality of collimation microlens sets up respectively one-to-one in a plurality of sub-optical rod's play light side.

Optionally, the light source includes a plurality of light emitting units, the first light uniformizing element adjacent to the light source includes a plurality of light uniformizing units, and the plurality of light emitting units and the plurality of light uniformizing units are respectively arranged in a one-to-one correspondence manner; alternatively, the first and second electrodes may be,

the light source comprises a first light emitting part and a second light emitting part, the first light emitting part comprises a plurality of first light emitting units, the second light emitting part comprises a plurality of second light emitting units, the first light homogenizing element adjacent to the light source comprises a plurality of first light homogenizing units and second light homogenizing units, the first light emitting units and the first light homogenizing units are arranged in a one-to-one corresponding mode, and the second light emitting units and the second light homogenizing units are arranged in a one-to-one corresponding mode.

Preferably, the first dodging element is configured as a compound eye lens group, the plurality of first dodging units are configured as a plurality of first compound eye units, the plurality of second dodging units are configured as a plurality of second compound eye units, the plurality of first light emitting units and the plurality of first compound eye units are arranged in a one-to-one correspondence manner, and the plurality of second light emitting units and the plurality of second compound eye units are arranged in a one-to-one correspondence manner.

Preferably, the first light homogenizing assembly comprises at least one light homogenizing diffuser.

Preferably, the first lens group comprises an image-side telecentric lens group.

Optionally, the diffusion sheet assembly further comprises a first moving layer, a base, a first elastic member and a second elastic member, and the driving part comprises a first driving part and a second driving part;

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

preferably, the first reed comprises a first reed body and a first support piece, 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 piece is arranged in the first long opening, one end of the first support piece is connected to one of the first inner edges, the other end of the first support piece and the other first inner edge are arranged at intervals along the second direction, the first support piece 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 support piece is used for being connected with the outer side face of the second frame plate or the outer side face of the fourth frame plate.

Optionally, the diffuser assembly further includes a mounting base and a third driving portion disposed on the mounting base, the refraction member includes a glass plate, the glass plate is swingably disposed on the mounting base along the beam propagation direction, and the third driving portion is configured to drive the glass plate to swing along the beam propagation direction.

The present disclosure also provides a projector optical machine, which includes the light uniformizing device.

The present disclosure additionally provides a projector including the projector light engine.

In the technical scheme, the first dodging assembly converts the light beam at the incident end into a plurality of light beams with respective optical axes and emits the light beams from the emergent end, and each light beam with an independent optical axis can realize a dodging process to realize area dodging of the light beam; the second dodging assembly reflects the light beams at the incident end for multiple times and emits the light beams from the emergent end of the second dodging assembly, the light beams emitted from the second dodging assembly comprise a plurality of different angle areas, and each angle area comprises the light beams in the angle area range in all the light beams at different positions at the entrance end of the second dodging assembly, so that the angle dodging of the light beams is realized. Therefore, in the present disclosure, the light beam emitted by the light source can realize at least one time of area dodging and one time of angle dodging, so that the product effect of at least two dodging is realized from the surface and the angle, and more incoherent lights are superposed together on the basis of improving the homogenization effect, thereby achieving a good speckle eliminating effect.

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 a schematic structural view of a light unifying apparatus according to a first embodiment of the present disclosure;

FIG. 2 is a schematic view of a first light unifying element of the light unifying apparatus of the first embodiment of the present disclosure;

FIG. 3 is a schematic view of a distribution of light spots at an incident end of a third light unifying element of the light unifying apparatus of the first embodiment of the present disclosure;

FIG. 4 is a schematic diagram of a far field distribution of an exit light beam of a third light unifying element of the light unifying apparatus of the first embodiment of the present disclosure;

FIG. 5 is a schematic view of the distribution of light spots on the imaging element of the light unifying apparatus according to the first embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of a light uniformizing apparatus according to a second embodiment of the present disclosure;

FIG. 7 is a schematic structural view of a light unifying apparatus according to a third embodiment of the present disclosure;

FIG. 8 is a schematic view of a light bar group of a light unifying apparatus according to a third embodiment of the present disclosure;

FIG. 9 is a schematic diagram of the far field distribution of the exit beam of each sub-optical rod of the light unifying apparatus according to the third embodiment of the present disclosure;

FIG. 10 is a schematic view of a distribution of light spots at an incident end of a third light unifying element of the light unifying apparatus of the third embodiment of the present disclosure;

FIG. 11 is a schematic diagram of a far field distribution of an exit light beam of a third light unifying element of the light unifying apparatus according to the third embodiment of the present disclosure;

fig. 12 is a schematic view of a distribution of light spots on an imaging element of a light unifying apparatus of the third embodiment of the present disclosure;

fig. 13 is a schematic structural view of a light unifying apparatus according to a fourth embodiment of the present disclosure, in which the first light unifying element is configured as a diffusion sheet;

fig. 14 is a schematic structural view of a light uniformizing device according to a fifth embodiment of the present disclosure, wherein a light source includes a first light emitting portion and a second light emitting portion;

FIG. 15 is an exploded view of a diffuser assembly of an embodiment of the light unifying apparatus of the present disclosure;

FIG. 16 is a schematic perspective view of a diffuser assembly of a light unifying apparatus according to an embodiment of the present disclosure;

FIG. 17 is a top view of a diffuser assembly of an embodiment of the light unifying apparatus of the present disclosure;

FIG. 18 is a side view of a diffuser assembly of an embodiment of the light unifying apparatus of the present disclosure;

FIG. 19 is a schematic view of a diffuser assembly of a light unifying apparatus according to an embodiment of the present disclosure taken along a second direction;

FIG. 20 is a schematic view of an exploded structure of a diffuser assembly of a light unifying apparatus according to another embodiment of the present disclosure, wherein a first guiding support column and a second guiding support column are also illustrated;

fig. 21 is a schematic view of a diffusion sheet of a light unifying apparatus according to another embodiment of the present disclosure.

Description of the reference numerals

1 light source 11 first light emitting section

12 second light emitting part 2 first light uniformizing assembly

2a first light unifying element 2b second light unifying element

21 light-homogenizing microlens 3 second light-homogenizing element

3a third dodging element 3b fourth dodging element

31 sub-optical rod 4 first lens group

5 second lens group 6 collimating lens group

61 collimating micro-lens 7 third lens group

8 PBS prism 9 imaging element

100 lens 20 fourth lens group

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 surface 110 and second detecting element

111 first guide support 1110 first guide support column

112 second guide support column 1120 second guide support column

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, in the case where no reverse explanation is made, arrows used in the respective views indicate light beams emitted from the light source, and directional words such as "front and rear" used refer to front and rear in the propagation direction of the light beams, and may be specifically referred to as shown in fig. 1; terms such as "first" and "second" are used merely to distinguish one element from another and are not sequential or significant.

As shown in fig. 1 to 21, the present disclosure provides a light unifying apparatus including: a light source 1 for emitting a light beam; along the light beam propagation direction, a first light homogenizing assembly 2, a second light homogenizing assembly 3 and at least one diffusion sheet assembly 10 are arranged for light beams to penetrate through; the first dodging component 2 is used for converting the light beam at the incident end into a plurality of light beams with respective optical axes and emitting the light beams from the emergent end of the first dodging component so as to perform area dodging on the light beams; the second dodging component 3 is used for reflecting the light beam at the incident end for multiple times and emitting the light beam from the emergent end so as to dodge the light beam at an angle; the diffusion sheet assembly 10 comprises a diffusion sheet 101 and a driving part, wherein the diffusion sheet 101 is used for light beams to penetrate through, and the driving part is used for driving the diffusion sheet 101 to move in a direction perpendicular to the light beams; and/or the diffusion sheet assembly 10 comprises a diffusion sheet 101 for light beams to pass through and a refraction member 102, wherein the refraction member 102 is arranged on the light inlet side of the diffusion sheet 101 and is used for refracting the light beams to different positions of the diffusion sheet 101.

The front and back arrangement positions of the first dodging assembly 2 and the second dodging assembly 3 are not limited, and the first dodging assembly 2 can be arranged on the light incident side of the second dodging assembly 3, or the second dodging assembly 3 can be arranged on the light incident side of the first dodging assembly 2; the present disclosure is not limited thereto.

As for the diffuser sheet assembly 10, the diffuser sheet assembly 10 may also be provided in one or more, the position of the arrangement is not limited, and the diffuser sheet assembly 10 may be provided between the light source 1 and the light uniformizing element, or may be provided between the light uniformizing elements, which is not limited in this disclosure.

In the above technical solution, the first dodging assembly 2 converts the light beam at the incident end thereof into a plurality of light beams having respective optical axes and emits the light beams from the exit end thereof, and each light beam having an independent optical axis can implement a dodging process for one time, thereby implementing area dodging of the light beam; the second light homogenizing assembly 3 reflects the light beams at the incident end for multiple times and emits the light beams from the emergent end, the light beams emitted from the second light homogenizing assembly 3 comprise a plurality of different angle areas, and each angle area comprises the light beams in the angle area range in all the light beams at different positions at the entrance end of the second light homogenizing assembly 3, so that the angular light homogenizing of the light beams is realized. The diffuser assembly 10 can also continuously homogenize the light beam to achieve homogenization in the time dimension.

Therefore, in this disclosure, the light beam emitted by the light source 1 can realize at least one time of area dodging and one time of angle dodging and dodging in at least one time dimension, and more incoherent lights are superposed together on the basis of improving the homogenization effect by the product of the dodging in the surface dimension, the angle dimension and the time dimension, thereby achieving a good speckle eliminating effect.

In the above description of the technical effect, the expression "the light beam emitted from the second light unifying assembly 3 includes a plurality of different angle areas, and each angle area includes the light rays within the range of the angle area in all the light beams at different positions at the entrance end of the second light unifying assembly 3" can be understood with reference to the following embodiments:

for example, the incident end of the second light unifying unit 3 has 10 light beams with respective optical axes, each light beam has an angle ranging from-10 degrees to 10 degrees, the light beam emitted from the exit end of the second light unifying unit 3 has an angle ranging from-10 degrees to 10 degrees and includes four angle regions, and the four angle regions are respectively: between-10 and-5 ℃; ② from-5 ℃ to 0 ℃; ③ between 0 and 5 ℃; and fourthly, the temperature is between 5 and 10 degrees. In the case of the first angle region, a set of rays between-10 degrees and-5 degrees in each beam is included, and the rays in the angle region are formed into a spot of a certain shape.

In one embodiment, referring to fig. 1, the dodging device further includes a first lens group 4, the first dodging assembly 2 includes a first dodging element 2a, the second dodging assembly 3 includes a third dodging element 3a, the first dodging element 2a, the first lens group 4 and the third dodging element 3a are sequentially arranged in the light beam propagation direction, and the first lens group 4 is used for imaging the light beam at the exit end of the first dodging element 2a to the entrance end of the third dodging element 3 a.

In this embodiment, by disposing the first lens group 4 between the first dodging element 2a and the third dodging element 3a to image the light beam at the exit end of the first dodging element 2a to the entrance end of the third dodging element 3a, the light beam exiting from the exit end of the first dodging element 2a is prevented from exiting out of order, and the utilization rate of the light beam exiting from the exit end of the first dodging element 2a is improved.

Alternatively, the above-mentioned first lens group 4 is configured as an image-side telecentric optical path lens group capable of imaging all the light beams at the exit end of the first dodging element 2a to the entrance end of the third dodging element 3 a.

Further, the light beam emitted by the first light unifying element 2a may satisfy the following relationship in irradiating the third light unifying element 3 a:

N1*S1*sin^2(Θ1)＝A*NA^2

s1 is the average light emitting area of each light beam emitted from the first light unifying element 2 a; Θ 1 is the average value of the beam divergence angles of each independent optical axis of the first light uniformizing element 2 a; the number of optical axes is defined as N1; a is the entrance area of the third light unifying element 3 a; NA is the numerical aperture of the third light unifying element 3a to receive the light.

Optionally, the light source 1 includes a plurality of light emitting units, the first light uniformizing element 2a adjacent to the light source 1 includes a plurality of light uniformizing units, and the plurality of light emitting units and the plurality of light uniformizing units are respectively arranged in a one-to-one correspondence.

For example, the light source 1 may be configured as a laser module, the plurality of light emitting units are configured as a plurality of chips of the laser module, the first light uniformizing element 2 is configured as a double-sided fly-eye lens, the plurality of light uniformizing units are configured as a plurality of fly-eye units of the double-sided fly-eye lens, and the plurality of chips and the plurality of fly-eye units are respectively arranged in a one-to-one correspondence manner, so as to realize area uniformization of light beams emitted by the light source.

In other embodiments, the light source 1 may also comprise only one light emitting unit, which emits one light beam, and the first light unifying element 2 adjacent to the light source 1 comprises a plurality of light unifying units, which convert the one light beam into a plurality of small light beams having respective optical axes. For example, the light emitting unit emits a light beam having a cross section of 10 square millimeters, the light unifying units are provided in 10, and each of the light unifying units may be 1 square millimeter, thereby dividing one light beam into 10 beamlets having respective optical axes.

Referring to fig. 1 to 5, the light source 1 is configured as a laser module with 24 chips, and the laser module emits red, green and blue laser light which vertically irradiates into a first dodging element 2a (double-sided fly eye lens) with 24 fly eye units along an optical axis, and the laser light irradiates all 24 fly eye units to form divergent laser beams with 24 optical axes, and each beam is transmitted along the optical axis. Each fly-eye cell of the fly-eye lens is configured to have a hexagonal cross section, and thus, the divergent profile of each light beam is hexagonal. After passing through the first lens group 4 configured as an image-side telecentric lens group, the 24 telecentric beam groups emitted from the fly eye lens form an inverted image at the entrance of the third dodging element 3a configured as a light rod, and the image surface can be referred to as shown in fig. 3. And each of the 24 light beams has its own independent hexagonal divergence angle and is emitted independently through the light bar, the number of reflections of the light beam in the light bar, i.e. the number of homogenization times of the light bar, is defined as N2, N2 ═ L × NA/(√ a), where L is the length of the light bar, NA is the numerical aperture of the light bar to receive the light, and a is the area of the light bar entrance. The number of times of homogenization of the light beams in the light bar determines the number of angular areas of the far field emitted by the light bar, for example, if the number of homogenization times is calculated to be 14, the far field emitted by the light bar has 14 areas, each area corresponds to 24 light beams in the angular range of the area in the transmission of the light bar, the divergence angles of the 24 light beams are all hexagons, and therefore, the far field light spot distribution profile of the light emitted by the light bar is also a hexagon, as shown in fig. 4.

In other embodiments, the first lens group 4 may also adopt an object image double telecentric lens group.

Referring to fig. 1, the light polarization state emitted from the light rod can pass through the PBS prism 8, and after the light beam emitted from the light rod passes through the light path formed by the third lens group 7 and the PBS prism 8, an image in the shape of the light rod outlet is formed on the imaging element 9 configured as an LCOS chip, specifically referring to fig. 5, the image includes one light spot (24 × 14 times of light uniformization) formed by completely integrating and homogenizing 24 spatial regions of a compound eye and an angular region of the light rod 14, so that sufficient integration and homogenization of the space and the angle are obtained, not only the brightness uniformity is greatly improved, but also the non-coherence is greatly reduced, and the effect of dispersing the light spot is achieved. The LCOS imaging chip modulates the light beam into an image, changes the polarization state by 90 degrees and reflects the light back to the original light path, the light is reflected by the PBS prism 8 into the lens 100, and the lens 100 projects the light out of the image according to a certain magnification ratio of 20.

In other embodiments, a DMD chip (not shown) and a TIR prism (not shown) may be disposed in the optical path instead of the PBS prism and the LCOS chip 9 of this embodiment.

In one embodiment, as shown with reference to fig. 13, the first light unifying element 2a includes a light unifying diffuser sheet. The dodging and diffusing sheet can be regarded as a new surface light source and can also diffuse laser into divergent beams with a plurality of optical axes.

In one implementation, referring to fig. 6, the dodging device further includes a second lens group 5, the first dodging assembly 2 further includes a second dodging element 2b, and a third dodging element 3a, the second lens group 5 and the second dodging element 2b are sequentially arranged in the light beam propagation direction, and the second lens group 5 is used for imaging the light beam at the exit end of the third dodging element 3a to the entrance end of the second dodging element 2 b.

That is, in this embodiment, the light uniformizing device includes the first light uniformizing element 2a, the second light uniformizing element 2b and the third light uniformizing element 3a, and realizes twice area light uniformizing and once angle light uniformizing, so as to further improve the light beam homogenization effect and improve the speckle elimination effect.

For example, referring to fig. 6, a light source 1 configured as a laser module emits a concentric ring group of light spots after two-stage integration through a first fly-eye lens group and a light rod, the light spots are imaged into a circular light spot to a second fly-eye lens group through a second lens group 5, the second fly-eye lens group divides the light spot into a plurality of sub-light beams, each sub-light beam includes a uniform light spot obtained by two-time integration at the front, and each sub-light beam is imaged onto the surface of the whole LCOS imaging chip through a fourth lens group 20, so that the plurality of sub-light beams generated by all the second fly-eye lens group are superimposed on the surface of the LCOS imaging chip, and each sub-light beam is the result of two-time integration dodging at the front stage, thereby realizing three-stage integrated dodging design.

Referring to fig. 7, the second dodging assembly 3 further includes a fourth dodging element 3b, the fourth dodging element 3b is disposed between the first dodging element 2a and the first lens group 4, and the first lens group 4 is configured to image the light beam at the exit end of the fourth dodging element 3b to the entrance end of the third dodging element 3 a.

That is, in this embodiment, the light uniformizing device includes the first light uniformizing element 2a, the third light uniformizing element 3a, and the fourth light uniformizing element 3b, and realizes twice angle light uniformizing and once area light uniformizing, thereby further improving the light beam uniformizing effect and the speckle removing effect

Optionally, referring to fig. 7, the dodging device further includes a collimating lens group 6 for collimating the light beam, and the collimating lens group 6 is disposed between the first lens group 4 and the fourth dodging element 3b, and by disposing the collimating lens group 6, the light beam is collimated, and the quality of light beam propagation is improved.

Alternatively, referring to fig. 7, the first dodging element 2a includes a dodging lens group, the fourth dodging element 3b includes a light bar group, the dodging lens group includes a plurality of dodging microlenses 21, the light bar group includes a plurality of sub-light bars 31, the collimating lens group 6 includes a plurality of collimating microlenses 61, the plurality of dodging microlenses 21 are respectively disposed on the light incident sides of the plurality of sub-light bars 31 in a one-to-one correspondence manner, and the plurality of collimating microlenses 61 are respectively disposed on the light emergent sides of the plurality of sub-light bars 31 in a one-to-one correspondence manner.

The plurality of dodging microlenses 21 effectively perform area dodging on the plurality of light beams, the plurality of sub-light rods 31 effectively perform angle dodging on the plurality of light beams, and the plurality of collimating microlenses 61 collimate the plurality of light beams, so that the quality of light beam propagation is improved. However, the present disclosure does not limit the specific forms of the first dodging element 2a, the fourth dodging element 3b and the collimating lens group 6.

For example, referring to fig. 7 to 12, the light source 1 is configured as a three-primary-color laser module including fourteen laser chips, emits fourteen laser beams including three colors of red, green and blue, and all the laser beams irradiate onto a dodging lens group, where the dodging lens group includes 14 dodging microlenses 21, each dodging microlens 21 spatially corresponds to one laser beam, and each laser beam is converged and incident on a light bar group after passing through the corresponding dodging microlens 21, and the light bar group is composed of 14 sub-light bars 31. Each light beam irradiates into the corresponding sub-light rod 31, the light rod group is shown in fig. 8, the far-field light spot distribution of the light beam emitted by each sub-light rod 31 is shown in fig. 9, and the light beam is divided into 10 angular regions according to the reflection times in the sub-light rods 31. The diverging light beam emitted from each sub-light bar 31 is collimated by the succeeding collimating lens group 6 and imaged by the light emitting face of the first lens group 4 to the entrance of the third light unifying element 3a configured as a light bar. The light spots at the entrance of the light bar are distributed as shown in fig. 10, the light spots are determined by the shapes of the light spots of 14 collimating micro-lenses 61, and each small light spot is a uniform light spot superposed by 10 angular regions.

Fourteen light beams all contain independent angle distribution and are transmitted in the light bar, light spots emitted after multiple reflections are shown in fig. 11, and the light-emitting far-field light spots of the light bar contain twenty-two sub-areas determined by the reflection times of the light bar. Each sub-area contains a superposition of 10 angular ranges of the 14 light beams in the front end light bar array. The light beam emitted from the light rod is imaged on the upper surface of the imaging element 9 by the third lens 7. The image distribution is determined by 14 light bar group light spots in space, the angle is the superposition of 10 angle areas reflected by the front end light bar group and 22 angle area light spots formed by multiple reflections of the rear end light bar, through the superposition of 14 space light beams and 2 times of angle superposition respectively of 10 and 22 angles, the light beam intensity on the surface of the DMD chip is not only very uniform, but also the light spots of each incoherent laser beam are superposed together to play a role in eliminating the light spots, and the image distribution is shown in figure 12. The DMD imaging chip modulates light energy into an image and projects the image through the lens 100.

Referring to fig. 14, the light source 1 may include a first light emitting portion 11 and a second light emitting portion 12, the first light emitting portion 11 includes a plurality of first light emitting units, the second light emitting portion 12 includes a plurality of second light emitting units, the first light uniformizing element 2a adjacent to the light source 1 includes a plurality of first light uniformizing units and second light uniformizing units, the plurality of first light emitting units and the plurality of first light uniformizing units are respectively arranged in a one-to-one correspondence manner, and the plurality of second light emitting units and the plurality of second light uniformizing units are respectively arranged in a one-to-one correspondence manner.

For example, in one embodiment, the first light emitting part 11 includes a laser module having a plurality of light emitting chips, the second light emitting part 12 includes an LED module having a plurality of LED light emitting units, the first light uniformizing element 2 adjacent to the light source 1 includes a compound eye lens group having a plurality of first compound eye units and a plurality of second compound eye units, the plurality of light emitting chips and the plurality of first compound eye units are respectively disposed in a one-to-one correspondence, and the plurality of LED light emitting units and the plurality of second compound eye units are respectively disposed in a one-to-one correspondence.

That is, the light source 1 may be composed of a plurality of light emitting parts, and may emit a laser beam, an LED beam or a fluorescent beam processed by the linear polarization modulation element 50 and the reflection mirror 60, or any combination of two or three. There may be a superposition of the light beams between different wavelengths, and there may also be a superposition of the light beams of the same wavelength, but impinging on the space at different positions of the first light unifying element 2 a.

Referring to fig. 15 to 20, the diffusion sheet assembly 10h further includes a first moving layer 103, a base 104, a first elastic member 105, and a second elastic member 106, and the 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. 15 and 16, the diffuser assembly further includes a second moving layer 109, the first moving layer 103 is configured as a frame structure, the diffuser 101 is disposed on the second moving layer 109 for light beam to pass through, a 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 a 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, as shown with reference to fig. 15 and 16, 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 the first direction a, and the second frame plate 1032 and the fourth frame plate 1034 being disposed opposite to each other in the 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 one of the second frame plate 1032 and the fourth frame plate 1034, and the other of the first leaves 1051 connects the other first outer side face 1091 with one of the second frame plate 1032 and 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. 15 and 18, the first reed 1051 includes a first reed body 10511 and a first support piece 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 piece 10512 is disposed in the first long mouth and one end of the first support piece 10512 is connected to one of the first inner edges 10501, the other end of the first support piece 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, 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 configured to be connected to the base 104, and the second support piece 10612 is configured to be connected to an outer side surface or an outer side surface.

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. 15, 16 and 17, 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 and the outer side surface both include a third portion and a fourth portion, the third portion is attached to the second support piece 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 clamped with the third clamping block 1035 and the fourth clamping block 1040 respectively. 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. 15 and 16, the base 104 includes a base frame 1041 and a base plate 1042, the base 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. 15, 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. 15 and 19, 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 in the second moving layer 109, and the other is provided in 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.

Alternatively, referring to fig. 15 and 16, 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. 15, 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. 15, 16 and 19, the diffusion sheet assembly further includes a controller, a first detection element and a second detection element 110, the first detection element is used for detecting first motion information of the second moving layer 109, the second detection element 110 is used for detecting second motion information of the first moving layer 103, and the first detection element, the second detection element 110, the first electrifying conductor 1072 and the second electrifying conductor 1082 are all electrically connected with 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, and to control the operation of the second energizing conductor 1082 based on the second motion information detected by the second detecting element 110.

In this embodiment, by providing the first detection element for detecting the first motion information of the second moving layer 109 and the second detection element 110 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, each of the first and second sensing elements 110 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 and second

movable layers

103 and 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 and the second sensing element 110.

Alternatively, as shown with reference to fig. 15 and 19, 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 passing 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. 15 and 19, 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. 20, 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. 20, 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, and both the two first guiding support columns 1110 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, and both the two second guiding support columns 1120 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.

Referring to fig. 21 (where an arrow indicates a light beam), the diffuser plate assembly 10 further includes a mounting base (not shown) and a third driving portion (not shown) disposed on the mounting base, the refraction member 102 includes a glass plate, the glass plate is swingably disposed on the mounting base along a light beam propagation direction, the third driving portion is configured to drive the glass plate to swing along the light beam propagation direction, and by continuously swinging the glass plate, a light beam is refracted by the glass plate and then irradiated to different positions on the diffuser plate 101, so that a light-homogenizing and speckle-eliminating effect in a time dimension is achieved. Alternatively, the glass plate 102 may be configured as a flat glass, a wedge glass, or the like, which is not limited by the present disclosure.

The present disclosure further provides a projector optical machine, which includes the above light uniformizing device.

The present disclosure additionally provides a projector including the projector light engine described above.

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, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

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 light unifying apparatus, comprising:

a light source (1) for emitting a light beam;

along the propagation direction of the light beam, a first dodging component (2) for the light beam to penetrate through, a second dodging component (3) and at least one diffuser component (10) are arranged;

the first dodging assembly (2) is used for converting the light beam at the incident end into a plurality of light beams with respective optical axes and emitting the light beams from the emergent end of the first dodging assembly so as to perform area dodging on the light beams;

the second dodging component (3) is used for reflecting the light beam at the incident end for multiple times and emitting the light beam from the emergent end so as to dodge the light beam at an angle;

the diffuser assembly (10) comprises a diffuser (101) and a driving part, wherein the diffuser (101) is used for light beams to penetrate through, and the driving part is used for driving the diffuser (101) to move in a direction perpendicular to the light beams; and/or the presence of a gas in the gas,

the diffusion sheet assembly (10) comprises a diffusion sheet (101) for light beams to penetrate through and a refraction piece (102), wherein the refraction piece (102) is arranged on the light inlet side of the diffusion sheet (101) and used for refracting the light beams to different positions of the diffusion sheet (101).

2. A light unifying apparatus according to claim 1, further comprising a first lens group (4), wherein the first light unifying assembly (2) comprises a first light unifying element (2a), wherein the second light unifying assembly (3) comprises a third light unifying element (3a), and wherein the first light unifying element (2a), the first lens group (4) and the third light unifying element (3a) are arranged in sequence in the light beam propagation direction, and wherein the first lens group (4) is configured to image the light beam at the exit end of the first light unifying element (2a) to the entrance end of the third light unifying element (3 a).

3. A light unifying apparatus according to claim 2, further comprising a second lens group (5), wherein the first light unifying assembly (2) further comprises a second light unifying element (2b), and wherein the third light unifying element (3a), the second lens group (5) and the second light unifying element (2b) are arranged in sequence in the light beam propagation direction, and wherein the second lens group (5) is configured to image the light beam at the exit end of the third light unifying element (3a) to the entrance end of the second light unifying element (2 b).

4. A light unifying apparatus according to claim 2, wherein the second light unifying assembly (3) further comprises a fourth light unifying element (3b), the fourth light unifying element (3b) being arranged between the first light unifying element (2a) and the first lens group (4), the first lens group (4) being adapted to image the light beam at the exit end of the fourth light unifying element (3b) to the entrance end of the third light unifying element (3 a).

5. A light unifying apparatus according to claim 4 further comprising a collimating lens group (6) for collimating the light beam, and wherein the collimating lens group (6) is arranged between the first lens group (4) and the fourth light unifying element (3 b).

6. The dodging device according to claim 5, wherein the first dodging element (2a) comprises a dodging lens group, the fourth dodging element (3b) comprises a light rod group, the dodging lens group comprises a plurality of dodging micro lenses (21), the light rod group comprises a plurality of sub-light rods (31), the collimating lens group (6) comprises a plurality of collimating micro lenses (61), the dodging micro lenses (21) are respectively arranged on the light incident sides of the sub-light rods (31) in a one-to-one correspondence manner, and the collimating micro lenses (61) are respectively arranged on the light emergent sides of the sub-light rods (31) in a one-to-one correspondence manner.

7. A light unifying apparatus according to any one of claims 2-6 characterized in that the light source (1) comprises a plurality of light emitting units, the first light unifying element (2a) adjacent to the light source (1) comprises a plurality of light unifying units, and the plurality of light emitting units and the plurality of light unifying units are respectively arranged in one-to-one correspondence; alternatively, the first and second electrodes may be,

the light source (1) comprises a first light emitting part (11) and a second light emitting part (12), the first light emitting part (11) comprises a plurality of first light emitting units, the second light emitting part (12) comprises a plurality of second light emitting units, the first light homogenizing element (2a) adjacent to the light source (1) comprises a plurality of first light homogenizing unit and second light homogenizing unit, the first light emitting units and the first light homogenizing units are arranged in a one-to-one corresponding mode respectively, and the second light emitting units and the second light homogenizing units are arranged in a one-to-one corresponding mode respectively;

preferably, the first dodging element (2a) is configured as a compound eye lens group, a plurality of the first dodging units are configured as a plurality of first compound eye units, a plurality of the second dodging units are configured as a plurality of second compound eye units, a plurality of the first light emitting units and a plurality of the first compound eye units are arranged in a one-to-one correspondence manner, and a plurality of the second light emitting units and a plurality of the second compound eye units are arranged in a one-to-one correspondence manner;

preferably, the first light homogenizing assembly (2) comprises at least one light homogenizing diffuser.

8. A light unifying apparatus according to claim 2, wherein the first lens group (4) comprises an image-side telecentric lens group.

9. The light unifying apparatus according to claim 1, wherein the diffuser assembly (10) further comprises a first moving layer (103), a base (104), a first elastic member (105) and a second elastic member (106), the diffuser assembly further comprises 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.

10. The dodging device according to claim 9, wherein the diffuser assembly (10) further comprises a second moving layer (109), the first moving layer (103) is configured as a frame structure, the diffuser (101) is disposed on the second moving layer (109), the first elastic member (105) connects the frame structure and the second moving layer (109) and supports the second moving layer (109) in the beam passing direction, and the second moving layer (109) is disposed at a distance from the frame structure in the first direction (a), 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).

11. A dodging device according to claim 10, wherein said 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, said first frame plate (1031) and said third frame plate (1033) being disposed opposite each other along said first direction (a), said second frame plate (1032) and said fourth frame plate (1034) being disposed opposite each other along said 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).

12. The light unifying apparatus according to claim 11, wherein 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 elongated opening extending along the second direction (B) and having both ends closed, the first elongated opening comprises two first inner edges (10501) oppositely disposed along the second direction (B), and two second inner edges (10502) oppositely disposed along a light beam passing direction, the first support sheet (10512) is disposed in the first elongated opening and one end of the first support sheet (10512) is connected to one of the first inner edges (10501), and the other end of the first support sheet (10512) is spaced apart from the other first inner edge (10501) along the second direction (B), the first supporting sheet (10512) and the two second inner edges (10502) are arranged at intervals along the light beam penetrating direction, the first reed body (10511) is used for being connected with the second frame plate (1032) or the fourth frame plate (1034), and the first supporting sheet (1051) is used for being connected with the first outer side surface (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).

13. The dodging device according to claim 1, wherein the diffuser assembly (10) further comprises a mounting base and a third driving portion provided on the mounting base, the refraction member (102) comprises a glass plate swingably provided on the mounting base in the beam propagation direction, and the third driving portion is configured to drive the glass plate to swing in the beam propagation direction.

14. A projector light engine, characterized in that it comprises a light unifying device according to any one of claims 1 to 13.

15. A projector comprising the projector light engine of claim 14.