CN220983706U - Double compound eye optical structure and projection equipment - Google Patents

Abstract

The application discloses a double compound eye optical structure and projection equipment. The double-fly-eye optical structure comprises a first fly-eye lens, a second fly-eye lens and a frame, wherein the frame is provided with a containing cavity with two open ends, the first fly-eye lens and the second fly-eye lens are respectively arranged at the open ends of the containing cavity, and at least one group of oppositely arranged side edges of the first fly-eye lens and/or at least one group of oppositely arranged side edges of the second fly-eye lens are arranged at intervals with the inner walls of the corresponding openings; the double-fly-eye optical structure further comprises an adjusting mechanism which is arranged on the frame and is abutted with the side edge of the first fly-eye lens and/or the side edge of the second fly-eye lens so as to adjust the relative position of the first fly-eye lens and the second fly-eye lens. Through the mode, the double compound eye optical structure can realize precise alignment of double compound eyes, and is simple in design structure and convenient to operate.

Description

Double compound eye optical structure and projection equipment

Technical Field

The application relates to the technical field of optical structure adjustment, in particular to a double compound eye optical structure and projection equipment.

Background

In projection devices, a binocular optical structure is often used to achieve a desired projection effect in order to homogenize and shape the optical path. When the alignment precision between the two compound eyes along the plane direction is insufficient, the light effect of the light path is obviously weakened, and the projection contrast is reduced to a certain extent.

Especially, under the condition of small compound eye unit size in the compound eye array, the requirement on the alignment precision of the double compound eyes is very high, and the requirement of the simple structure limiting precision is difficult to meet. Therefore, under the application requirement, a structural scheme capable of realizing precise alignment of double compound eyes and simple in structure and convenient to operate is very important.

Disclosure of utility model

In order to solve the above problems, the present application provides a binocular optical structure and a projection apparatus, which aim to solve the above problems.

In order to solve the technical problems, the application adopts a technical scheme that: the double-fly-eye optical structure comprises a first fly-eye lens, a second fly-eye lens and a frame, wherein the frame is provided with a containing cavity with two open ends, the first fly-eye lens and the second fly-eye lens are respectively arranged at the open ends of the two ends of the containing cavity, and at least one group of oppositely arranged side edges of the first fly-eye lens and/or at least one group of oppositely arranged side edges of the second fly-eye lens are arranged at intervals with the inner walls of the corresponding openings; the double-fly-eye optical structure further comprises an adjusting mechanism which is arranged on the frame and is abutted with the side edge of the first fly-eye lens and/or the side edge of the second fly-eye lens so as to adjust the relative position of the first fly-eye lens and the second fly-eye lens.

The first side edges of the first fly-eye lens which are oppositely arranged along the first direction are arranged at intervals with the inner walls of the corresponding openings so as to form a first gap, and the second side edges of the first fly-eye lens which are oppositely arranged along the second direction are in sliding connection with the inner walls of the corresponding openings; the second side edges of the second fly-eye lens which are oppositely arranged along the second direction are arranged at intervals with the inner walls of the corresponding openings so as to form a second gap, and the first side edges of the second fly-eye lens which are oppositely arranged along the first direction are in sliding connection with the inner walls of the corresponding openings; wherein the first direction and the second direction are perpendicular to each other.

The first adjusting mechanism is arranged on the frame and is abutted with the first side edge of the first fly-eye lens so as to adjust the relative position of the first fly-eye lens and the frame along the second direction; the second adjusting mechanism is arranged on the frame and is abutted with the second side edge of the second fly-eye lens so as to adjust the relative position of the second fly-eye lens and the frame along the first direction.

The first adjusting mechanism comprises a first adjusting screw rod and a second adjusting screw rod, and a group of side walls of the opening corresponding to the first fly-eye lens along the first direction are respectively provided with a first threaded through hole and a second threaded through hole; the first adjusting screw rod and the second adjusting screw rod respectively penetrate through the first threaded through hole and the second threaded through hole to be in butt joint with the first fly-eye lens, and the relative position of the first fly-eye lens and the frame is adjusted along the second direction by carrying out matched rotation on the first adjusting screw rod and the second adjusting screw rod.

The second adjusting mechanism comprises a third adjusting screw rod and a fourth adjusting screw rod, and a group of side walls of the opening corresponding to the second fly-eye lens along the second direction are respectively provided with a third threaded through hole and a fourth threaded through hole; the third adjusting screw and the fourth adjusting screw are respectively penetrated through a third threaded through hole and a fourth threaded through hole to be abutted with the second fly-eye lens, and the relative position of the second fly-eye lens and the frame is adjusted along the first direction by the matched rotation of the third adjusting screw and the fourth adjusting screw.

The first adjusting mechanism comprises a first adjusting screw and a first elastic pad, and one of a group of side walls of the opening corresponding to the first fly-eye lens in the first direction is provided with a first threaded through hole; the first elastic pad is arranged in a first gap between the other one of the group of side walls of the opening in the first direction and the first fly-eye lens, the first adjusting screw penetrates through the first threaded through hole to be in butt joint with the first fly-eye lens, and the relative position of the first fly-eye lens and the frame is adjusted along the second direction by rotating the first adjusting screw.

The second adjusting mechanism comprises a second adjusting screw and a second elastic pad, and one of a group of side walls of the opening corresponding to the second fly-eye lens in the second direction is provided with a second threaded through hole; the second elastic pad is arranged in a second gap between the other one of the group of side walls of the opening in the second direction and the second fly-eye lens, the second adjusting screw rod penetrates through the second threaded through hole to be in butt joint with the second fly-eye lens, and the second adjusting screw rod is rotated to adjust the relative position of the second fly-eye lens and the frame along the first direction.

The first adjusting mechanism comprises a first adjusting inclined block and a first elastic pad; one of a group of side walls in a second direction of the opening corresponding to the first fly-eye lens is provided with a first through hole at a position corresponding to the first gap; the first elastic pad is arranged in the other first gap, the first adjusting inclined block penetrates through the first through hole to enter the first gap to be abutted against the first fly-eye lens, and the first adjusting inclined block is pushed to adjust the relative position of the first fly-eye lens and the frame along the second direction.

The second adjusting mechanism comprises a second adjusting inclined block and a second elastic pad; one of a group of side walls of the opening corresponding to the second fly-eye lens in the first direction is provided with a second through hole at a position corresponding to the second gap; the second elastic pad is arranged in the other second gap, the second adjusting inclined block penetrates through the second through hole to enter the second gap to be abutted against the second fly-eye lens, and the second adjusting inclined block is pushed to adjust the relative position of the second fly-eye lens and the frame along the first direction.

In order to solve the technical problems, the application adopts another technical scheme that: there is provided a projection device comprising a binocular optical structure of any of the above.

The beneficial effects of the application are as follows: different from the prior art, the double-fly-eye optical structure comprises a first fly-eye lens, a second fly-eye lens and a frame, wherein the frame is provided with a containing cavity with two open ends, the first fly-eye lens and the second fly-eye lens are respectively arranged at the openings at the two ends of the containing cavity, and at least one group of oppositely arranged side edges of the first fly-eye lens and/or at least one group of oppositely arranged side edges of the second fly-eye lens are arranged at intervals with the inner walls of the corresponding openings; in addition, the double-fly-eye optical structure of the application also comprises an adjusting mechanism which is arranged on the frame and is abutted with the side edge of the first fly-eye lens and/or the side edge of the second fly-eye lens so as to adjust the relative position of the first fly-eye lens and the second fly-eye lens. By means of the mode, the double-compound-eye optical structure can adjust the relative positions between the first compound-eye lens and the second compound-eye lens and the frame through the adjusting mechanism so as to improve the alignment precision of the double-compound-eye optical structure.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:

FIG. 1 is a schematic diagram of a first embodiment of a binocular optical structure of the present application;

FIG. 2 is an exploded view of a second embodiment of a binocular optical structure of the present application;

FIG. 3 is a side view of a third embodiment of a binocular optical structure of the present application;

FIG. 4 is a side view of a fourth embodiment of a binocular optical structure of the present application;

FIG. 5 is a side view of a fifth embodiment of a dual compound eye optical structure of the present application;

FIG. 6 is a side view of a sixth embodiment of a dual compound eye optical structure of the present application;

FIG. 7 is a side view of a seventh embodiment of a dual compound eye optical structure of the present application;

fig. 8 is a schematic structural view of an embodiment of the projection apparatus of the present application.

Detailed Description

Embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and thus are merely examples, and are not intended to limit the scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

In the description of embodiments of the present application, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In projection devices, a binocular optical structure is often used to achieve a desired projection effect in order to homogenize and shape the optical path. When the alignment precision between the two compound eyes along the plane direction is insufficient, the light effect of the light path is obviously weakened, and the projection contrast is reduced to a certain extent.

Especially, under the condition of small compound eye unit size in the compound eye array, the requirement on the alignment precision of the double compound eyes is very high, and the requirement of the simple structure limiting precision is difficult to meet. Therefore, under the application requirement, a structural scheme capable of realizing precise alignment of double compound eyes and simple in structure and convenient to operate is very important.

In order to solve the above-mentioned problems, the present application firstly proposes a binocular optical structure, please refer to fig. 1 and 2, fig. 1 is a schematic structural diagram of a first embodiment of the binocular optical structure of the present application;

Fig. 2 is an exploded view of a second embodiment of the binocular optical structure of the present application. The binocular optical structure 100 of the present embodiment includes a first fly-eye lens 10, a second fly-eye lens 20 and a frame 30, wherein the frame 30 is formed with a cavity with two open ends, and the first fly-eye lens 10 and the second fly-eye lens 20 are respectively disposed at the openings at the two ends of the cavity.

And at least one set of oppositely disposed sides of the first fly-eye lens 10 and/or at least one set of oppositely disposed sides of the second fly-eye lens 20 are spaced from the inner wall of the corresponding opening; the binocular optical structure 100 further includes an adjusting mechanism 40, where the adjusting mechanism 40 is disposed on the frame 30 and abuts against a side edge of the first fly-eye lens 10 and/or a side edge of the second fly-eye lens 20 to adjust a relative position of the first fly-eye lens 10 and the second fly-eye lens 20.

As shown in fig. 1 and 2, the first fly-eye lens 10 and the second fly-eye lens 20 may be rectangular, and the frames 30 are disposed correspondingly. As shown in fig. 2, the frame 30 may be provided with a hollow step in the cavity for mounting the first fly-eye lens 10 and the second fly-eye lens 20, so as to accommodate the first fly-eye lens 10 and the second fly-eye lens 20.

In this embodiment, a set of opposite sides of the first fly-eye lens 10 are spaced from the inner wall of the opening corresponding to the frame 30, a set of opposite sides of the second fly-eye lens 20 perpendicular to the first fly-eye lens 10 are spaced from the inner wall of the opening corresponding to the frame 30, and in addition, the adjusting mechanism 40 is abutted against the sides of the first fly-eye lens 10 and the sides of the second fly-eye lens 20 respectively to adjust the relative positions between the first fly-eye lens 10 and the second fly-eye lens 20 and the frame 30, thereby realizing precise alignment of the relative positions of the first fly-eye lens 10 and the second fly-eye lens 20 on a plane.

In a common double-compound-eye structure, the alignment precision of the double-compound-eye is generally determined by a lateral limiting surface on a compound-eye outer frame, the precision is generally limited to about 0.02mm for a conventional processing technology by virtue of the manufacturing precision of a structural limiting surface, and the manufacturing yield of parts can be rapidly reduced along with the increase of the precision. In contrast, in the present embodiment, the first fly-eye lens 10 and the second fly-eye lens 20 can achieve precise alignment of the relative positions on the plane by only using one simple frame 30, and the two-dimensional alignment relationship does not generate coupling crosstalk, and does not introduce degrees of freedom in other directions; in addition, in this embodiment, the alignment relationship between the first fly-eye lens 10 and the second fly-eye lens 20 can be finely adjusted by the adjusting mechanism 40, so that the alignment accuracy can be easily controlled to be within 0.01mm, and the processing accuracy of the parts is hardly depended on, and meanwhile, the complex adjusting mechanism 40 is not required, compared with the prior art, the structure of this embodiment is simpler, and the operation is more convenient.

Alternatively, in other embodiments, the two-fly-eye optical structure 100 may also be configured such that two sets of opposite sides of one of the first fly-eye lens 10 and the second fly-eye lens 20 are disposed at intervals inside the opening corresponding to the frame 30, the other one of the first fly-eye lens 10 and the second fly-eye lens 20 is fixedly disposed, and finally the two sets of sides of one of the movable first fly-eye lens 10 and the second fly-eye lens 20 are abutted by the adjusting mechanism 40, so that the relative positions of the first fly-eye lens 10 and the second fly-eye lens 20 can be adjusted.

In addition, compared with the prior art, the structure of the present application is simpler and the adjustment operation is also convenient, compared with the prior art, the dual-fly-eye optical structure 100 of the present application can adjust the relative positions of the first fly-eye lens 10, the second fly-eye lens 20 and the frame 30 by the adjusting mechanism 40 to improve the alignment precision of the dual-fly-eye optical structure 100.

Optionally, referring to fig. 3 based on the embodiments of fig. 1 and 2, fig. 3 is a side view of a third embodiment of the binocular optical structure of the present application. As shown in the left diagram of fig. 3, in the present embodiment, first side edges of the first fly-eye lens 10 disposed opposite to each other in the first direction are disposed at intervals from inner walls of the corresponding openings to form first gaps 11, and second side edges of the first fly-eye lens 10 disposed opposite to each other in the second direction are slidably connected to inner walls of the corresponding openings; as shown in the right diagram of fig. 3, the second side edges of the second fly-eye lens 20 oppositely arranged along the second direction are spaced from the inner walls of the corresponding openings to form a second gap 21, and the first side edges of the second fly-eye lens 20 oppositely arranged along the first direction are slidably connected with the inner walls of the corresponding openings; wherein the first direction and the second direction are perpendicular to each other.

In the present embodiment, the width of the first gap 11 and the second gap 21 may be set to about 0.3mm, which may be achieved by machining or die opening, and the width may be set to a pressure that reduces the machining accuracy while reducing the adjustment range of the first fly-eye lens 10 and the second fly-eye lens 20.

In addition, in the present embodiment, in order to slidably connect the oppositely disposed second side edge of the first fly-eye lens 10 in the second direction with the inner wall of the corresponding opening, a guide groove in the second direction may be provided on the second side edge of the first fly-eye lens 10 in the second direction with the inner wall of the corresponding opening to slidably connect the first fly-eye lens 10 with the frame 30, and similarly, in order to slidably connect the oppositely disposed first side edge of the second fly-eye lens 20 in the first direction with the inner wall of the corresponding opening, a guide groove in the first direction may be provided on the first side edge of the second fly-eye lens 20 in the first direction with the inner wall of the corresponding opening to slidably connect the second fly-eye lens 20 with the frame 30.

In other embodiments, if the two-fly-eye optical structure 100 is formed by disposing two sets of opposite sides of one of the first fly-eye lens 10 and the second fly-eye lens 20 at intervals inside the opening corresponding to the frame 30, and fixing the other one of the first fly-eye lens 10 and the second fly-eye lens 20, the two sets of opposite sides of the first fly-eye lens are disposed in the opening corresponding to the frame 30 by the adjusting mechanism 40, and the relative positions of the fly-eye lenses can be adjusted correspondingly by the adjusting mechanism 40.

Alternatively, based on the above embodiment, referring to fig. 1 to 3, as shown in fig. 1 to 3, the adjusting mechanism 40 includes a first adjusting mechanism 41 and a second adjusting mechanism 42, where the first adjusting mechanism 41 is disposed on the frame 30 and abuts against the first side edge of the first fly-eye lens 10, so as to adjust the relative position of the first fly-eye lens 10 and the frame 30 along the second direction; the second adjusting mechanism 42 is disposed on the frame 30 and abuts against the second side of the second fly-eye lens 20 to adjust the relative position of the second fly-eye lens 20 and the frame 30 along the first direction.

Alternatively, as shown in fig. 1 to 3, the first adjusting mechanism 41 includes a first adjusting screw 411 and a second adjusting screw 412, and a group of side walls in the first direction of the opening corresponding to the first fly-eye lens 10 are provided with a first threaded through hole 311 and a second threaded through hole 312, respectively; the first adjusting screw 411 and the second adjusting screw 412 are respectively inserted into the first threaded through hole 311 and the second threaded through hole 312 to be abutted against the first fly-eye lens 10, and the relative positions of the first fly-eye lens 10 and the frame 30 are adjusted along the second direction by rotating the first adjusting screw 411 and the second adjusting screw 412 in a matched manner.

Alternatively, as shown in fig. 1 to 3, the second adjusting mechanism 42 includes a third adjusting screw 421 and a fourth adjusting screw 422, and a group of sidewalls of the opening corresponding to the second fly-eye lens 20 in the second direction are provided with a third threaded through hole 321 and a fourth threaded through hole 322, respectively; the third adjusting screw 421 and the fourth adjusting screw 422 are respectively inserted into the third threaded through hole 321 and the fourth threaded through hole 322 to be abutted against the second fly-eye lens 20, and the relative positions of the second fly-eye lens 20 and the frame 30 are adjusted along the first direction by the matching rotation of the third adjusting screw 421 and the fourth adjusting screw 422.

Based on the embodiments of fig. 1 to 3, that is, based on the position of the first fly-eye lens 10, the first adjusting screw 411 and the second adjusting screw 412 are mutually matched to rotate to advance and retract, so that the first fly-eye lens 10 and the second fly-eye lens 20 can be precisely aligned in the second direction; the second fly-eye lens 20 is positioned in the first direction by the third adjusting screw 421 and the fourth adjusting screw 422, which are rotated to advance and retract.

In other embodiments, during the adjustment process, the first fly-eye lens 10 and the second fly-eye lens 20 may be matched with the frame 30 by using a tooling elastic thimble or a tooling elastic sheet, so as to avoid the jump of the first fly-eye lens 10 and the second fly-eye lens 20 during the adjustment, and the first fly-eye lens 10 and the second fly-eye lens 20 may be fixed with the frame 30 by using the fly-eye four-corner glue after the alignment adjustment of the first fly-eye lens 10 and the second fly-eye lens 20 is completed.

Alternatively, in other embodiments, referring to fig. 4, fig. 4 is a side view of a fourth embodiment of the binocular optical structure of the present application. As shown in fig. 4, the first adjusting mechanism 41 includes a first adjusting screw 413 and a first spring pad 414, and one of a group of side walls of the opening corresponding to the first fly-eye lens 10 in the first direction is provided with a first threaded through hole (not shown); the first spring pad is disposed in a first gap 11 between the other one of the set of side walls of the opening in the first direction and the first fly-eye lens, the first adjusting screw 413 is penetrated through the first threaded through hole and is abutted against the first fly-eye lens 10, and the relative position of the first fly-eye lens 10 and the frame 30 is adjusted along the second direction by rotating the first adjusting screw 413.

Optionally, referring to fig. 5, fig. 5 is a side view of a fifth embodiment of the binocular optical structure of the present application. As shown in fig. 5, the second adjusting mechanism 42 includes a second adjusting screw 423 and a second spring pad 424, and one of a set of sidewalls of the opening corresponding to the second fly-eye lens 20 in the second direction is provided with a second threaded through hole (not shown); the second elastic pad 424 is disposed in the second gap 12 between the other one of the set of sidewalls of the opening in the second direction and the second fly-eye lens, and the second adjusting screw 423 is disposed through the second threaded through hole and abuts against the second fly-eye lens 20, so as to adjust the relative position of the second fly-eye lens 20 and the frame 30 along the first direction by rotating the second adjusting screw 423.

Based on the embodiments of fig. 4 to 5, in the above embodiments, the first elastic pad 414 and the second elastic pad 424 may be configured as flexible nonmetal gaskets such as silica gel pads, rubber pads, etc., or may be configured as metal elastic members such as springs or metal elastic sheets, etc., which are not limited herein. That is, in the embodiment of fig. 4 to 5, only one screw hole and an adjusting screw may be provided in one adjusting direction of the frame 30, and the elastic pad as described above may be provided at the other side of the adjusting screw, and the reciprocating fine adjustment of the compound eye in one adjusting direction may be achieved by the elastic restoring force of the elastic pad and the adjusting screw.

Alternatively, in other embodiments, referring to fig. 6, fig. 6 is a side view of a sixth embodiment of the binocular optical structure of the present application. As shown in fig. 6, in the present embodiment, the first adjusting mechanism 41 includes a first adjusting inclined block 415 and a first spring pad 416; one of a set of side walls in the second direction of the opening corresponding to the first fly-eye lens 10 is provided with a first through hole 31 at a position corresponding to the first gap 11; the first elastic pad 416 is disposed in the other first gap 11, and the first adjusting inclined block 415 penetrates through the first through hole 31 to enter the first gap 11 and abut against the first fly-eye lens 10, so as to adjust the relative position of the first fly-eye lens 10 and the frame 30 along the second direction by pushing the first adjusting inclined block 415.

Optionally, referring to fig. 7, fig. 7 is a side view of a seventh embodiment of the dual compound eye optical structure of the present application. As shown in fig. 7, the second adjusting mechanism 42 includes a second adjusting inclined block 425 and a second spring pad 426; one of a set of side walls in the first direction of the opening corresponding to the second fly-eye lens 20 is provided with a second through hole 32 at a position corresponding to the second gap 12; the second elastic pad 426 is disposed in the other second gap 12, and the second adjusting inclined block 425 penetrates the second through hole 32 to enter the second gap 12 and abut against the second fly-eye lens 20, so as to adjust the relative position of the second fly-eye lens 20 and the frame 30 along the first direction by pushing the second adjusting inclined block 425.

In the above embodiments, the first spring pad 416 and the second spring pad 426 may be configured as flexible nonmetal pads such as silica gel pads and rubber pads, or may be configured as metal elastic members such as springs or metal elastic sheets, which are not limited herein. Unlike the above-mentioned embodiments, in the embodiments of fig. 6 to 7, the first through hole 31 and the second through hole 32 are formed on the side walls of the frame 30 corresponding to the first gap 11 and the second gap 12, respectively, and at this time, the first adjusting inclined block 415 and the second adjusting inclined block 425 with gentle gradients can be used to extend into the gaps through the first through hole 31 and the second through hole 32 to push the first fly-eye lens 10 and the second fly-eye lens 20, so as to perform the alignment fine adjustment on the first fly-eye lens 10 and the second fly-eye lens 20.

Optionally, the present application further provides a projection apparatus, referring to fig. 8, and fig. 8 is a schematic structural diagram of an embodiment of the projection apparatus of the present application. As shown in fig. 8, the projection apparatus 200 of the present embodiment includes the binocular optical structure 100 of any of the above-described embodiments.

Wherein the projection device 200 includes, but is not limited to, an engineering projector, a micro laser projector, or a commercial projector. The projection device 200 of the application can be applied to products such as vehicle-mounted display, HUD, car lamp series and the like, is particularly suitable for light path application with small double-compound-eye light spot area and small whole row unit area on double-compound-eyes in use occasions, and has obvious advantages of accuracy, cost and operation convenience by using the double-compound-eye optical structure 100 and the projection device 200 of the application.

The foregoing description is only illustrative of the present application and is not intended to limit the scope of the application, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present application.

Claims (10)

1. The double-fly-eye optical structure is characterized by comprising a first fly-eye lens, a second fly-eye lens and a frame, wherein the frame is provided with a containing cavity with two open ends, the first fly-eye lens and the second fly-eye lens are respectively arranged at the openings at the two ends of the containing cavity, and at least one group of oppositely arranged side edges of the first fly-eye lens and/or at least one group of oppositely arranged side edges of the second fly-eye lens are arranged at intervals with the inner walls of the corresponding openings;

The double-fly-eye optical structure further comprises an adjusting mechanism which is arranged on the frame and is abutted against the side edge of the first fly-eye lens and/or the side edge of the second fly-eye lens so as to adjust the relative position of the first fly-eye lens and the second fly-eye lens.

2. The binocular optical structure of claim 1, wherein oppositely disposed first sides of the first fly-eye lens in a first direction are spaced apart from the corresponding inner walls of the opening to form a first gap, and oppositely disposed second sides of the first fly-eye lens in a second direction are slidably coupled with the corresponding inner walls of the opening;

The second side edge of the second fly-eye lens which is oppositely arranged along the second direction is arranged at intervals with the inner wall of the corresponding opening so as to form a second gap, and the first side edge of the second fly-eye lens which is oppositely arranged along the first direction is in sliding connection with the inner wall of the corresponding opening;

wherein the first direction and the second direction are perpendicular to each other.

3. The binocular optical structure of claim 2, wherein the adjusting mechanism comprises a first adjusting mechanism and a second adjusting mechanism, the first adjusting mechanism being disposed on the frame and abutting against the first side edge of the first fly-eye lens to adjust the relative position of the first fly-eye lens and the frame along the second direction;

The second adjusting mechanism is arranged on the frame and is abutted with the second side edge of the second fly-eye lens so as to adjust the relative position of the second fly-eye lens and the frame along the first direction.

4. The binocular optical structure of claim 3, wherein the first adjusting mechanism comprises a first adjusting screw and a second adjusting screw, and a group of side walls of the opening corresponding to the first fly-eye lens along the first direction are respectively provided with a first threaded through hole and a second threaded through hole; the first adjusting screw rod and the second adjusting screw rod respectively penetrate through the first threaded through hole and the second threaded through hole to be in butt joint with the first fly-eye lens, and the relative positions of the first fly-eye lens and the frame are adjusted along the second direction by matching and rotating the first adjusting screw rod and the second adjusting screw rod.

5. The binocular optical structure of claim 3, wherein the second adjusting mechanism comprises a third adjusting screw and a fourth adjusting screw, and a group of side walls of the opening corresponding to the second fly-eye lens along the second direction are respectively provided with a third threaded through hole and a fourth threaded through hole; the third adjusting screw and the fourth adjusting screw are respectively penetrated through the third threaded through hole and the fourth threaded through hole to be abutted against the second fly-eye lens, and the relative positions of the second fly-eye lens and the frame are adjusted along the first direction by matching and rotating the third adjusting screw and the fourth adjusting screw.

6. The binocular optical structure of claim 3, wherein the first adjusting mechanism comprises a first adjusting screw and a first spring pad, one of a set of sidewalls of the first direction of the opening corresponding to the first fly-eye lens being provided with a first threaded through hole; the first elastic pad is arranged in the first gap between the other one of the group of side walls of the opening in the first direction and the first fly-eye lens, the first adjusting screw penetrates through the first threaded through hole to be in contact with the first fly-eye lens, and the relative position of the first fly-eye lens and the frame is adjusted along the second direction by rotating the first adjusting screw.

7. The binocular optical structure of claim 3, wherein the second adjusting mechanism comprises a second adjusting screw and a second spring pad, one of a set of sidewalls of the second direction of the opening corresponding to the second fly-eye lens being provided with a second threaded through hole; the second elastic pad is arranged in the second gap between the other one of the group of side walls of the opening in the second direction and the second fly-eye lens, the second adjusting screw penetrates through the second threaded through hole to be in contact with the second fly-eye lens, and the second adjusting screw is rotated to adjust the relative position of the second fly-eye lens and the frame in the first direction.

8. The binocular optical structure of claim 3, wherein the first adjustment mechanism comprises a first adjustment ramp and a first spring pad; one of a set of side walls of the second direction of the opening corresponding to the first fly-eye lens is provided with a first through hole at a position corresponding to the first gap; the first elastic pad is arranged in the other first gap, the first adjusting inclined block penetrates through the first through hole to enter the first gap to be abutted against the first fly-eye lens, and the relative position of the first fly-eye lens and the frame is adjusted along the second direction by pushing the first adjusting inclined block.

9. The binocular optical structure of claim 3, wherein the second adjusting mechanism comprises a second adjusting ramp and a second spring pad; one of a set of side walls of the first direction of the opening corresponding to the second fly-eye lens is provided with a second through hole at a position corresponding to the second gap; the second elastic pad is arranged in the other second gap, the second adjusting inclined block penetrates through the second through hole to enter the second gap to be abutted against the second fly-eye lens, and the second adjusting inclined block is pushed to adjust the relative position of the second fly-eye lens and the frame along the first direction.

10. A projection device comprising a binocular optical structure according to any one of claims 1-9.