Semi-automatic equipment for manufacturing optical cube

Abstract

The invention discloses semi-automatic equipment for manufacturing an optical cube, and relates to the technical field of optical equipment.The semi-automatic equipment comprises a pressing mechanism, a placing mechanism, an adjusting platform and a UV illumination mechanism, the pressing mechanism and a pressing block achieve precise pressing through a lifting assembly, and pressure is monitored in real time in combination with a pressure-sensitive sensor; the placing mechanism adopts a'hard-to-soft 'structure, specifically a metal pressing block and a rubber positioning soft block, and is assisted by upper and lower pressing positioning pieces with elastic buffering, so that the completeness of the prism and the membrane material is protected; the adjusting platform realizes multi-degree-of-freedom fine adjustment through the X-Y translation platform and the rotating platform, and the fitting segment difference is eliminated; the UV illumination mechanism adopts a UV lamp with two sides obliquely arranged to ensure uniform curing of glue, through structural innovation and intelligent control, the laminating precision, the production efficiency and the yield of the optical cube are remarkably improved, and reliable support is provided for high-quality manufacturing of the AR optical module.

Description

Technical Field

[0001] The present invention relates to the technical field of optical devices, and more specifically to a semi-automatic device for manufacturing optical cubes. Background Art

[0002] With the rapid iteration and commercial application of augmented reality (AR) technology, the performance of optical systems has become the core factor determining the user experience. As a key component in the AR optical module, the prism undertakes the core functions of light beam splitting, beam combining, and path guiding. Its bonding flatness directly affects the accuracy of the optical path, imaging resolution, and color consistency. If there is unevenness in the prism bonding, problems such as optical path deviation and astigmatic distortion will occur, significantly reducing the display effect and immersion of AR devices.

[0003] The prism is composed of two triangular prisms and a PBS film. Its flatness includes two aspects: on the one hand, it is necessary to ensure that there is no obvious step difference after the two triangular prisms form a prism; on the other hand, it is necessary to ensure that there are no wrinkles, bubbles, dirt, or other abnormalities on the bonding surface of the PBS film. However, it is difficult to ensure the step difference of the optical cube formed by the bonding of triangular prisms in the prior art; in addition, due to the sensitivity of the PBS film itself, very high flatness and very soft UV glue are required to achieve the best optical effect, so it is also difficult to ensure the effect of the bonding surface of the PBS film after the prism is bonded to form a cube. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a semi-automatic device for manufacturing optical cubes. By combining structural innovation and intelligent control technology, this semi-automatic device solves the pain points in traditional processes such as difficult control of prism step difference, high film damage rate, and uneven UV curing, providing a reliable guarantee for the high-quality manufacturing of AR optical modules.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A semi-automatic device for manufacturing optical cubes, comprising:

[0007] A pressing mechanism, which includes a lifting component, a lifting seat, and a pressing block. The lifting seat is connected to the lifting end of the lifting component, the pressing block is installed on the lifting seat, and an upper pressing and positioning member is provided on the side of the lifting seat where the pressing block is located;

[0008] A placing mechanism, which includes a placing base and a positioning soft block. The positioning soft block is installed on the placing base, and a positioning and placing structure is provided on the positioning soft block. A lower pressing and positioning member is provided on the side of the placing base where the positioning soft block is located;

[0009] Adjusting platform, which includes an X-Y translation stage and a rotary stage, the X-Y translation stage is installed on the rotary end of the rotary stage, and the placement base is installed on the mobile end of the X-Y translation stage;

[0010] UV illumination mechanism, which includes an illumination frame and UV lamps, the illumination frame is arranged on both sides of the placement mechanism, and a number of UV lamps are provided. The number of UV lamps is installed on the illumination frame and is in an up-and-down inclined state and faces the placement mechanism.

[0011] Furthermore, the several UV lamps are respectively located on the illumination frames on both sides and are in an up-and-down inclined state and respectively and evenly face the placement mechanism, and the included angle of the UV lamp optical axis in the Z direction is 10° to 50°.

[0012] Furthermore, the lifting assembly includes a fixed frame, a driving motor, a screw rod and a threaded sleeve. The driving motor is installed on the top of the fixed frame. The screw rod is arranged vertically and rotatably installed on the fixed frame, and one end of the screw rod is connected to the main shaft of the driving motor. The threaded sleeve is sleeved on the screw rod, and the lifting seat is slidably connected to the fixed frame vertically and is fixedly connected to the threaded sleeve.

[0013] Furthermore, a slide rail is arranged on the fixed frame, the lifting seat is connected with a slider, and the slider is slidably connected with the slide rail.

[0014] Furthermore, a pressure-sensitive sensor is arranged on the placement base, and a contact block is arranged on the lifting seat, and the contact block can be in contact and cooperation with the pressure-sensitive sensor.

[0015] Furthermore, an installation groove is arranged on the placement base, the pressure-sensitive sensor is arranged in the installation groove, and an elastic structure is arranged between the bottom of the pressure-sensitive sensor and the bottom of the installation groove.

[0016] Furthermore, the upper pressing and positioning member includes an upper abutting block, an upper U-shaped rod and an upper pressing spring. An upper installation hole is arranged on the lifting seat, the upper pressing spring is located in the upper installation hole, one end of the upper U-shaped rod extends into the upper installation hole, and the other end is located on the side of the pressing block. One end of the upper pressing spring is connected to the lifting seat, and the other end is connected to the upper U-shaped rod. The upper abutting block is arranged on the lifting seat and is arranged opposite to the upper U-shaped rod.

[0017] Furthermore, the lower pressing and positioning member includes a lower abutting block, a lower U-shaped rod and a lower pressing spring. A lower installation hole is arranged on the placement base, the lower pressing spring is located in the lower installation hole, one end of the lower U-shaped rod extends into the lower installation hole, and the other end is located on the side of the positioning soft block. One end of the lower pressing spring is connected to the placement base, and the other end is connected to the lower U-shaped rod. The lower abutting block is arranged on the placement base and is arranged opposite to the lower U-shaped rod.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. High-precision bonding and step control: Through the adjustment platform composed of the X-Y translation stage and the rotary stage, the position of the prism can be finely adjusted in multiple degrees of freedom (translation and rotation). Combining with the pressure-sensitive sensor to monitor the pressing pressure in real time, the quantitative control of the bonding process is realized. This design effectively eliminates the front-back and left-right steps after the prism is bonded, ensures the accuracy of the optical path, and significantly improves the imaging quality of the optical cube in terms of brightness uniformity, clarity, color uniformity, etc.

[0020] 2. Flexible protection of the prism and film material: Adopting the "hard-on-soft" structure design (with a metal pressing block on the upper side and a rubber positioning soft block on the lower side), it not only ensures the positioning accuracy through the rigid pressing block, but also utilizes the elasticity of the rubber soft block to adapt to the shape of the prism, avoiding prism breakage or film material wrinkles caused by hard contact, and protecting the integrity of the sensitive PBS film material.

[0021] 3. Optimization of UV light illumination uniformity: By arranging UV lamps on both sides and tilting them towards the bonding surface, it ensures that the UV glue can be cured evenly. This design effectively reduces the stress distortion caused by uneven glue curing, and improves the light transmittance and long-term stability of the optical cube.

[0022] 4. Automatic and intelligent control: Utilizing the closed-loop control of the drive motor and the pressure-sensitive sensor, it realizes the precise adjustment and real-time feedback of the pressing speed and pressure, reduces the human operation error, and can quickly complete the setting and optimization of the bonding parameters through the preset program, greatly improving the production efficiency and the qualified product rate.

[0023] 5. High adaptability and error correction ability: The displacement compensation function of the adjustment platform and the elastic tolerance design of the pressing and positioning parts can adapt to the production requirements of different specifications of prisms and film materials. By testing the steps and performing dynamic compensation before preparation, the cumulative error of the equipment is further eliminated, ensuring the consistency and reliability of mass production.

[0024] Through the combination of structural innovation and intelligent control technology, the present invention solves the pain points in the traditional process such as difficult prism step control, high film material damage rate, uneven UV curing, etc., providing a reliable guarantee for the high-quality manufacturing of AR optical modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings, where:

[0026] Figure 1 is a structural schematic diagram of a semi-automatic device for manufacturing an optical cube Figure 1 ;

[0027] Figure 2 is Figure 1 an enlarged view of part A in

[0028] Figure 3 a schematic structural diagram of a semi-automatic device for manufacturing an optical cube Figure 2 ;

[0029] Figure 4 is Figure 3 a sectional view taken along line B-B in

[0030] Figure 5 is Figure 4 an enlarged view of part C in

[0031] The reference numerals in the figure are: 1, a downward pressing mechanism; 101, a fixing frame; 102, a driving motor; 103, a screw rod; 104, a slide rail; 105, a slider; 106, a lifting seat; 107, a pressing block; 108, a threaded sleeve; 109, an upper abutting block; 110, an upper U-shaped rod; 111, an upper mounting hole; 112, an upper pressing spring; 113, a contact block; 2, a placing base; 201, a positioning soft block; 202, a lower abutting block; 203, a lower U-shaped rod; 204, a lower mounting hole; 205, a lower pressing spring; 206, a pressure-sensitive sensor; 207, a mounting groove; 208, a detection spring; 3, a rotating table; 4, an X-Y translation stage; 5, a UV illumination mechanism; 501, a UV lamp; 502, an illumination frame. Detailed implementation manners

[0032] In the description of the present invention, it should be noted that for orientation terms, such as the terms "center", "transverse (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and position relationships indicated are based on the orientation or position relationships shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present invention.

[0033] In addition, for the terms "first" and "second", they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meanings of "several" and "a number of" are two or more, unless otherwise specifically and clearly defined.

[0034] A semi-automatic device for manufacturing an optical cube, asFigures 1-5 As shown in the figure, it includes:

[0035] A pressing mechanism 1, which includes a lifting component, a lifting seat 106 and a pressing block 107. The lifting seat 106 is connected to the lifting end of the lifting component. The pressing block 107 is installed on the lifting seat 106. An upper pressing and positioning member is arranged on the side of the lifting seat 106 where the pressing block 107 is located;

[0036] A placing mechanism, which includes a placing base 2 and a positioning soft block 201. The positioning soft block 201 is installed on the placing base 2, and a positioning and placing structure is arranged on the positioning soft block 201. A lower pressing and positioning member is arranged on the side of the placing base 2 where the positioning soft block 201 is located;

[0037] An adjusting platform, which includes an X-Y translation stage 4 and a rotating stage 3. The X-Y translation stage 4 is installed on the rotating end of the rotating stage 3, and the placing base 2 is installed on the moving end of the X-Y translation stage 4;

[0038] A UV light irradiation mechanism 5, which includes a light irradiation frame 502 and UV lamps 501. The light irradiation frame 502 is arranged on both sides of the placing mechanism. A plurality of UV lamps 501 are arranged, and the plurality of UV lamps 501 are installed on the light irradiation frame 502 and are in an up-and-down inclined state and face the placing mechanism.

[0039] Preferably, the lifting component includes a fixed frame 101, a driving motor 102, a screw rod 103 and a threaded sleeve 108. The driving motor 102 is installed on the top of the fixed frame 101. The screw rod 103 is arranged vertically and rotatably installed on the fixed frame 101, and one end of the screw rod 103 is connected to the main shaft of the driving motor 102. The threaded sleeve 108 is sleeved on the screw rod 103. The lifting seat 106 is slidably connected to the fixed frame 101 vertically and is fixedly connected to the threaded sleeve 108;

[0040] Specifically, the driving motor 102 drives the screw rod 103 to rotate, thereby driving the threaded sleeve 108 to move axially up and down, and driving the lifting seat 106 to lift.

[0041] Preferably, a slide rail 104 is arranged on the fixed frame 101. The lifting seat 106 is connected with a slider 105, and the slider 105 is slidably connected with the slide rail 104, so as to realize the vertical sliding connection of the lifting seat 106 to the fixed frame 101.

[0042] Preferably, a pressure-sensitive sensor 206 is arranged on the placing base 2, and a contact block 113 is arranged on the lifting seat 106. The contact block 113 can be in contact and cooperation with the pressure-sensitive sensor 206;

[0043] Specifically, an installation groove 207 is provided on the placement base 2, the pressure-sensitive sensor 206 is disposed in the installation groove 207, and an elastic structure is provided between the bottom of the pressure-sensitive sensor 206 and the bottom of the installation groove 207. The elastic structure can be a detection spring 208. By providing the elastic structure, the pressure monitoring becomes flexible monitoring, which can avoid the influence of rigid contact detection on the fitting of the prism.

[0044] By providing the pressure-sensitive sensor 206 and cooperating with the driving motor 102, the fitting pressure is quantitatively controlled. The driving motor 102 controls the pressing speed and pressure, and the pressure-sensitive sensor 206 directly confirms its data.

[0045] Preferably, the upper pressing and positioning member includes an upper abutting block 109, an upper U-shaped rod 110 and an upper pressing spring 112. An upper mounting hole 111 is provided on the lifting seat 106. The upper pressing spring 112 is located in the upper mounting hole 111. One end of the upper U-shaped rod 110 extends into the upper mounting hole 111, and the other end is located on the side of the pressing block 107. One end of the upper pressing spring 112 is connected to the lifting seat 106, and the other end is connected to the upper U-shaped rod 110. The upper abutting block 109 is disposed on the lifting seat 106 and is arranged opposite to the upper U-shaped rod 110.

[0046] Preferably, the lower pressing and positioning member includes a lower abutting block 202, a lower U-shaped rod 203 and a lower pressing spring 205. A lower mounting hole 204 is provided on the placement base 2. The lower pressing spring 205 is located in the lower mounting hole 204. One end of the lower U-shaped rod 203 extends into the lower mounting hole 204, and the other end is located on the side of the positioning soft block 201. One end of the lower pressing spring 205 is connected to the placement base 2, and the other end is connected to the lower U-shaped rod 203. The lower abutting block 202 is disposed on the placement base 2 and is arranged opposite to the lower U-shaped rod 203.

[0047] Specifically, after two prisms are stacked on the positioning soft block 201, the upper U-shaped rod 110 and the lower U-shaped rod 203 are pulled out and rotated so that the upper U-shaped rod 110 and the lower U-shaped rod 203 respectively abut against the two prisms, and the two prisms are positioned and clamped between the U-shaped rods and the abutting blocks, realizing positioning and fixing, thereby ensuring accurate fitting.

[0048] Preferably, the positioning soft block 201 is made of rubber material.

[0049] Preferably, the positioning and placing structure on the positioning soft block 201 is a lower V-shaped groove, and an upper V-shaped groove is provided on the pressing block 107. By providing the V-shaped grooves, the prisms are shaped and positioned.

[0050] Preferably, four UV lamps 501 may be provided. The four UV lamps 501 are respectively located on the light-illuminating frames 502 on both sides and are in an upper and lower inclined state and all face the placing mechanism, and the included angle of the UV lamp optical axes in the Z direction is 10° to 50°, so as to optimize the irradiation angle and method of the UV lamp (double-sided). Generally, the refractive index is about 1.5. When the included angle between the UV lamp 501 and the bonding surface is 20°, the bonding surface is most evenly illuminated.

[0051] Preferably, the UV lamp 501 is rotatably connected to the light-illuminating frame 502 and is provided with a locking mechanism, so that the irradiation angle of the UV lamp 501 can be adjusted to adapt to more prisms with different refractive indexes.

[0052] Before manufacturing the optical cube, this semi-automatic device needs to first perform a bonding test adjustment on the first group of cubes. By first preparing a group of optical cubes, then detecting the step difference of the prepared optical cubes, and then using the X-Y translation stage 4 and the rotary stage 3 to adjust and compensate for the step difference, the elimination of the step difference is achieved.

[0053] Advantages:

[0054] 1. High-precision bonding and step difference control: Through the adjustment platform composed of the X-Y translation stage 4 and the rotary stage 3, the position of the prism can be finely adjusted in multiple degrees of freedom (translation and rotation). Combining with the pressure-sensitive sensor 206 to monitor the pressing pressure in real time, the quantitative control of the bonding process is realized. This design effectively eliminates the front-back and left-right step differences after the prism bonding, ensures the accuracy of the optical path, and significantly improves the imaging quality of the optical cube in terms of brightness uniformity, clarity, color uniformity, etc.

[0055] 2. Flexible protection of the prism and the film material: Adopting the "hard-on-soft" structure design (a metal pressing block 107 above and a rubber positioning soft block 201 below), not only ensuring the positioning accuracy through the rigid pressing block 107, but also using the elasticity of the rubber soft block 201 to adapt to the shape of the prism, avoiding prism breakage or film material wrinkles caused by hard contact, and protecting the integrity of the sensitive PBS film material.

[0056] 3. Optimization of UV light illumination uniformity: By arranging the UV lamps 501 on both sides and facing the bonding surface at an inclined angle, it is ensured that the UV glue can be cured evenly. This design effectively reduces the stress distortion caused by uneven glue curing and improves the light transmittance and long-term stability of the optical cube.

[0057] 4. Automatic and intelligent control: Using the closed-loop control of the drive motor 102 and the pressure-sensitive sensor 206, the accurate adjustment and real-time feedback of the pressing speed and pressure are realized, reducing the human operation error. Through the preset program, the bonding parameters can be quickly set and optimized, greatly improving the production efficiency and the qualified product rate.

[0058] 5. High adaptability and error correction ability: By adjusting the displacement compensation function of the adjustment platform and the elastic tolerance design of the pressing and positioning parts, it can adapt to the production requirements of different specifications of prisms and film materials. Before preparation, the step difference is tested and dynamically compensated to further eliminate the cumulative error of the equipment and ensure the consistency and reliability of mass production.

[0059] Through the combination of structural innovation and intelligent control technology, the present invention solves the pain points in traditional processes such as difficult control of prism step difference, high film material damage rate, and uneven UV curing, providing a reliable guarantee for the high-quality manufacturing of AR optical modules.

[0060] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the concept of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A semi-automatic device for making an optical cube, characterized in that: include: The pressing mechanism comprises a lifting assembly, a lifting seat and a pressing block, wherein the lifting seat is connected to the lifting end of the lifting assembly, the pressing block is mounted on the lifting seat, and an upper pressing positioning piece is arranged on the side of the pressing block on the lifting seat; The placement mechanism comprises a placement base and a positioning soft block, wherein the positioning soft block is mounted on the placement base, and a positioning placement structure is arranged on the positioning soft block, and a lower pressing positioning piece is arranged on the side of the placement base located at the positioning soft block; The adjustment platform includes an XY translation stage and a rotating stage, wherein the XY translation stage is mounted on the rotating end of the rotating stage, and the placement base is mounted on the moving end of the XY translation stage; The UV irradiation mechanism comprises an irradiation frame and UV lamps. The irradiation frame is arranged on both sides of the placement mechanism. A plurality of UV lamps are arranged. The plurality of UV lamps are installed on the irradiation frame and are in an up and down tilted state and face the placement mechanism.

2. A semi-automatic device for making an optical cube according to claim 1, characterized in that: A plurality of UV lamps are respectively located on the illumination racks at both sides and are tilted up and down and are respectively and all facing the placement mechanism, and the Z-direction angle of the UV light axis is 10° to 50°.

3. A semi-automatic device for making an optical cube according to claim 1, characterized in that: The lifting assembly includes a fixed frame, a driving motor, a screw and a threaded sleeve. The driving motor is installed on the top of the fixed frame. The screw is vertically arranged and rotatably installed on the fixed frame, and one end of the screw is connected to the main shaft of the driving motor. The threaded sleeve is sleeved on the screw. The lifting seat is vertically slidably connected to the fixed frame and fixedly connected to the threaded sleeve.

4. A semi-automatic device for making an optical cube according to claim 3, characterized in that: The fixing frame is provided with a slide rail, the lifting seat is connected with a slider, and the slider cooperates with the slide rail for sliding connection.

5. A semi-automatic device for making an optical cube according to claim 3, characterized in that: The placing base is provided with a pressure-sensitive sensor, and the lifting seat is provided with a contact block, and the contact block can be in contact with and cooperate with the pressure-sensitive sensor.

6. A semi-automatic device for making an optical cube according to claim 5, characterized in that: The placing base is provided with a mounting groove, the pressure-sensitive sensor is arranged in the mounting groove, and an elastic structure is arranged between the bottom of the pressure-sensitive sensor and the bottom of the mounting groove.

7. A semi-automatic device for making an optical cube according to claim 1, characterized in that: The upper clamping positioning piece includes an upper abutment block, an upper U-shaped rod and an upper clamping spring. An upper mounting hole is provided on the lifting seat. The upper clamping spring is located in the upper mounting hole. One end of the upper U-shaped rod extends into the upper mounting hole, and the other end is located on the side of the pressure block. One end of the upper clamping spring is connected to the lifting seat, and the other end is connected to the upper U-shaped rod. The upper abutment block is provided on the lifting seat and is arranged opposite to the upper U-shaped rod.

8. A semi-automatic device for making an optical cube according to claim 1, characterized in that: The lower clamping positioning piece includes a lower abutment block, a lower U-shaped rod and a lower clamping spring. A lower mounting hole is provided on the placement base. The lower clamping spring is located in the lower mounting hole. One end of the lower U-shaped rod extends into the lower mounting hole, and the other end is located on the side of the positioning soft block. One end of the lower clamping spring is connected to the placement base, and the other end is connected to the lower U-shaped rod. The lower abutment block is provided on the placement base and is arranged opposite to the lower U-shaped rod.

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