MLA micro lens fixing structure

Abstract

An MLA micro lens fixing structure comprises a light source module, a plurality of light source lenses, a mounting body, a plurality of micro lenses and a cover plate, the light source module is fixedly mounted on one side of the mounting body, the cover plate is fixedly mounted on the other side of the mounting body, the light source lenses are mounted between the light source module and the mounting body, and the micro lenses are mounted on the mounting body. The micro lenses are mounted between the cover plate and the mounting main body, a plurality of accommodating cavities are formed in the mounting main body, gaps are formed between the micro lenses and the accommodating cavities, and the micro lenses are fixedly connected with the inner walls of the accommodating cavities through glue; the containing cavity is formed in the mounting body, the position adjusting mechanism is arranged to adjust the micro lens until the micro lens projects a standard image, and then the micro lens is fixed through glue, so that the image formed by projection of the micro lens is standard and is not prone to shaking during working, and the imaging effect is good and stable.

Description

Technical Field

[0001] The present application relates to the technical field of optical components, and in particular to an MLA microlens fixing structure. Background Art

[0002] MLA (Microlens Array) is an array composed of several microlenses with a clear aperture and relief depth of micrometers arranged in a specific manner. By adjusting the shape, focal length, arrangement, duty cycle, etc. of the microlenses in the microlens array, certain optical reflection and refraction projection image functions can be achieved. In real life, microlenses are usually installed in microlens optical machine modules and are widely used in scenes such as car door opening projection and welcome carpets.

[0003] Micro lens optical machine module in the prior art (such as Figure 6 , Figure 7 The optical system (as shown in the figure) usually includes: LED light source, light source lens, main body, microlens, cover plate and other modules. When assembling these modules, the microlens, LED light source, light source lens, cover plate and other modules need to be installed on the main body, wherein the main body is usually a plastic part. When installing the microlens on the main body, it is usually necessary to use a gap fit between the main body and the microlens to make the assembly process more portable and efficient. However, since the microlens and the main body are not completely positioned, the positional relationship between the two is unstable, the microlens will shake relative to the main body, and at the same time, there will be a large dimensional error between the microlens and other modules. However, there is no fine-tuning compensation solution to adjust this error, so the error of the generated optical image is large, and the optical imaging effect is also unstable.

[0004] Therefore, the inventors need to design a new MLA microlens fixing structure to overcome the above problems. Summary of the invention

[0005] The main purpose of the present application is to provide an MLA microlens fixing structure to solve the problem in the related art that the large mounting error between the microlens and the main body leads to large imaging error and unstable imaging effect.

[0006] In order to achieve the above-mentioned objectives, the present application provides an MLA microlens fixing structure, comprising a light source module, a plurality of light source lenses, a mounting body, a plurality of microlenses and a cover plate, wherein the light source module is fixedly mounted on one side of the mounting body, the cover plate is fixedly mounted on the other side of the mounting body, the light source lens is mounted between the light source module and the mounting body, the microlens is mounted between the cover plate and the mounting body, the mounting body has a plurality of accommodating cavities, a gap is provided between the microlens and the accommodating cavities, and the microlens is fixedly connected to the inner wall of the accommodating cavity by glue.

[0007] Preferably, it also includes a position adjustment mechanism for adjusting the position of the microlens.

[0008] Preferably, the position adjustment mechanism comprises a mechanical arm and a clamping claw, wherein the clamping claw is fixedly arranged at an output end of the mechanical arm, and the clamping claw is used to clamp the side wall of the microlens.

[0009] Preferably, the accommodating cavity includes a supporting back plate and a limiting side plate, the supporting back plate is fixedly arranged on the mounting body, a through opening for light to pass through is opened in the middle of the supporting back plate, the limiting side plate is fixedly arranged on the supporting back plate, and the microlens is fixedly arranged between the supporting back plate and the limiting side plate.

[0010] Preferably, the limiting side plate includes two longitudinal baffles and two transverse baffles, and the two longitudinal baffles and the two transverse baffles form a rectangular shape.

[0011] Preferably, there is an opening between the two longitudinal baffles and the two transverse baffles to facilitate the passage of the clamping claws.

[0012] Preferably, a Z-axis glue dispensing space is provided between the microlens and the supporting back plate, an X-axis glue dispensing space is provided between the microlens and the two transverse baffles, and a Y-axis glue dispensing space is provided between the microlens and the two longitudinal baffles.

[0013] Preferably, the position adjustment mechanism comprises a mechanical arm and a suction cup, wherein the suction cup is fixedly arranged at an output end of the mechanical arm, and the suction cup is used to absorb the microlens.

[0014] Preferably, the cover plate is fixedly connected to the main body via a buckle.

[0015] Compared with the prior art, the MLA microlens fixing structure provided by the utility model has the following beneficial effects:

[0016] By arranging a receiving cavity on the installation body and arranging a position adjustment mechanism to adjust the microlens to project a standard image and then fixing the microlens by glue, the image projected by the microlens is standard and not prone to shaking during operation, and the imaging effect is good and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The schematic embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0018] Figure 1 It is the overall structure diagram of the utility model;

[0019] Figure 2 This is a structural diagram of the MLA microlens array of the utility model;

[0020] Figure 3 It is an exploded diagram of the MLA microlens array of the utility model;

[0021] Figure 4 This is a front view of the MLA microlens array of the utility model;

[0022] Figure 5 This utility model Figure 4 Middle AA section cutaway view;

[0023] Figure 6 It is an exploded diagram of MLA microlens in the prior art;

[0024] Figure 7 It is a cross-sectional view of an MLA microlens in the prior art.

[0025] Among them: 1. Light source module; 2. Light source lens; 3. Installation body; 4. Micro lens; 5. Cover plate; 6. Support back plate; 7. Robotic arm; 8. Gripper; 9. Support back plate; 10. Limiting side plate; 1001. Longitudinal baffle; 1002. Horizontal baffle; 11. Through port; 12. Opening; 13. Buckle. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0027] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0028] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0029] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0030] In addition, the term "plurality" shall mean two or more.

[0031] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0032] Embodiment 1:

[0033] like Figures 1 to 5 As shown, an MLA microlens 4 fixing structure comprises a light source module 1, a plurality of light source lenses 2, a mounting body 3, a plurality of microlenses 4 and a cover plate 5, wherein the light source module 1 is fixedly mounted on one side of the mounting body 3, the cover plate 5 is fixedly mounted on the other side of the mounting body 3, the light source lens 2 is mounted between the light source module 1 and the mounting body 3, the microlens 4 is mounted between the cover plate 5 and the mounting body 3, the mounting body 3 has a plurality of accommodating cavities, a gap is provided between the microlens 4 and the accommodating cavities, and the microlens 4 is fixedly connected to the inner wall of the accommodating cavity by glue; when working, first Assemble the light source lens 2 on the installation body 3 on a fixed frame, then fix the light source lens 2 at the same time by fixing the light source module 1 to the installation body 3, and then install the microlens 4. When installing the microlens 4, control the light source module 1 to be in working state, and then continuously fine-tune the position of the microlens 4 in the accommodating cavity. When the image formed by the microlens 4 is a standard image, stop adjusting the state of the microlens 4, and then add glue to the gap between the microlens 4 and the light source module 1. After the glue solidifies, completely fix the position of the microlens 4. At this time, the microlens 4 will not shake, and the image presented will always be a standard image, and the imaging effect is stable. The cover plate 5 is fixedly connected to the main body by the buckle 13; finally, the cover plate 5 is buckled on the installation body 3 to complete the installation of this MLA microlens 4.

[0034] The device also includes a position adjustment mechanism for adjusting the position of the microlens 4; the position adjustment mechanism includes a mechanical arm 7 and a clamp 8, the clamp 8 is fixedly arranged at the output end of the mechanical arm 7, and the clamp 8 is used to clamp the side wall of the microlens 4; when working, the clamp 8 clamps the side wall of the microlens 4, and then the mechanical arm 7 is used to adjust the microlens 4 in six degrees of freedom in space until the image formed by the microlens 4 is a standard image, and then the clamp 8 and the mechanical arm 7 are fixed, so the position of the microlens 4 is also fixed, and then in the process of applying glue, the position of the microlens 4 relative to the mounting body 3 is fixed, so that the image presented by the microlens 4 after the glue solidifies can be a standard image.

[0035] The accommodating cavity includes a supporting back plate and a limiting side plate 10, the supporting back plate is fixedly arranged on the installation body 3, a through hole 11 for light to pass through is opened in the middle of the supporting back plate, the limiting side plate 10 is fixedly arranged on the supporting back plate, and the microlens 4 is fixedly arranged between the supporting back plate and the limiting side plate 10; the limiting side plate 10 includes two longitudinal baffles 1001 and two transverse baffles 1002, and the two longitudinal baffles 1001 and the two transverse baffles 1002 form a rectangular shape; when working, for the rectangular microlens 4, the limiting side plate 10 is set to a rectangular shape similar to the microlens 4, so that the four sides of the microlens 4 can be fixedly connected to the limiting side plate 10 by glue.

[0036] There is an opening 12 between the two longitudinal baffles 1001 and the two transverse baffles 1002 for the clamping jaws 8 to pass through; during operation, since the side walls of the microlens 4 need to be connected to the limiting side plates 10 by glue and need to be clamped by the clamping jaws 8, the limiting side plates 10 and the clamping jaws 8 may interfere with each other. Therefore, an opening 12 is provided between the transverse baffle 1002 and the longitudinal baffle 1001 to facilitate the movement of the clamping jaws 8 and avoid interference between the two.

[0037] There is a Z-axis glue dispensing space between the microlens 4 and the supporting back plate, an X-axis glue dispensing space between the microlens 4 and the two horizontal baffles 1002, and a Y-axis glue dispensing space between the microlens 4 and the two longitudinal baffles 1001; when working, the X-axis glue dispensing space, the Y-axis glue dispensing space, and the Z-axis glue dispensing space are both reserved for fine-tuning of the microlens 4 and reserved for glue dispensing. The glue dispensing water here can be transparent light-curing glue, etc.

[0038] Embodiment 2: not shown in the figure, the difference between this embodiment and embodiment 1 is that: the position adjustment mechanism includes a mechanical arm 7 and a suction cup, the suction cup is fixedly arranged at the output end of the mechanical arm 7, and the suction cup is used to adsorb the microlens 4; the limiting side plate 10 is circular, and when working, the front of the circular microlens 4 is adsorbed by the suction cup and then fine-tuned, and the glue point is between the side wall of the circular microlens 4 and the circular limiting side plate 10; compared with embodiment 1, this embodiment only changes the shape of the microlens 4 from a rectangle to a circle, and makes corresponding changes to the components for grabbing the microlens 4, from the clamping claw 8 to the suction cup.

[0039] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An MLA microlens fixing structure, comprising a light source module (1), a plurality of light source lenses (2), a mounting body (3), a plurality of microlenses (4) and a cover plate (5), characterized in that: The light source module (1) is fixedly mounted on one side of the mounting body (3), the cover plate (5) is fixedly mounted on the other side of the mounting body (3), the light source lens (2) is mounted between the light source module (1) and the mounting body (3), the micro lens (4) is mounted between the cover plate (5) and the mounting body (3), the mounting body (3) is provided with a plurality of accommodating cavities, a gap is provided between the micro lens (4) and the accommodating cavities, and the micro lens (4) is fixedly connected to the inner wall of the accommodating cavity by glue.

2. The MLA microlens fixing structure according to claim 1, characterized in that: It also includes a position adjustment mechanism for adjusting the position of the microlens (4).

3. The MLA microlens fixing structure according to claim 2, characterized in that: The position adjustment mechanism comprises a mechanical arm (7) and a clamp (8); the clamp (8) is fixedly arranged at the output end of the mechanical arm (7); and the clamp (8) is used to clamp the side wall of the microlens (4).

4. The MLA microlens fixing structure according to claim 3, characterized in that: The accommodating cavity comprises a supporting back plate and a limiting side plate (10); the supporting back plate is fixedly arranged on the mounting body (3); a through hole (11) is provided in the middle of the supporting back plate for light to pass through; the limiting side plate (10) is fixedly arranged on the supporting back plate; and the microlens (4) is fixedly arranged between the supporting back plate and the limiting side plate (10).

5. The MLA microlens fixing structure according to claim 4, characterized in that: The limiting side plate (10) comprises two longitudinal baffles (1001) and two transverse baffles (1002), and the two longitudinal baffles (1001) and the two transverse baffles (1002) form a rectangular shape.

6. The MLA microlens fixing structure according to claim 5, characterized in that: An opening (12) is provided between the two longitudinal baffles (1001) and the two transverse baffles (1002) to facilitate the passage of the clamping claw (8).

7. The MLA microlens fixing structure according to claim 5, characterized in that: A Z-axis glue spotting space is provided between the microlens (4) and the supporting back plate, an X-axis glue spotting space is provided between the microlens (4) and the two transverse baffles (1002), and a Y-axis glue spotting space is provided between the microlens (4) and the two longitudinal baffles (1001).

8. The MLA microlens fixing structure according to claim 2, characterized in that: The position adjustment mechanism comprises a mechanical arm (7) and a suction cup, wherein the suction cup is fixedly arranged at the output end of the mechanical arm (7), and the suction cup is used to absorb the microlens (4).

9. The MLA microlens fixing structure according to claim 2, characterized in that: The cover plate (5) is fixedly connected to the main body via a buckle (13).

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