Diffractive optical imaging device based on vcsel light source imaging

Abstract

The utility model relates to the technical field of diffractive optical imaging, and discloses a diffractive optical imaging device based on vcsel light source imaging, which comprises a supporting bottom plate and a vcsel light source generator, one side of the top end of the supporting bottom plate is provided with an adjusting box, and one side of a substrate is provided with a diffractive optical component. The adjusting box is installed on one side of the top end of the supporting bottom plate, then the threaded rod can be driven to rotate after the servo motor works, at the moment, the threaded rod and the threaded block are matched with each other to form a threaded path, the guide block is fixed to the top end of the threaded block, and guide connection is formed through matching of the guide block and the guide groove; therefore, the vcsel light source generator can be driven to be transversely adjusted, the distance between the vcsel light source generator and the collimating lens is adjusted, a fixed light source is generated when the vcsel light source generator works, the light source is diffracted through the diffractive optical component, the overall size is small, the diffraction range is large, energy consumption is low, and the position of the vcsel light source generator can be conveniently adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of diffraction optical imaging, in particular to a diffraction optical imaging device based on VCSEL light source imaging. Background Art

[0002] The traditional machine vision recognition modules currently available on the market usually use imaging modes such as LED surface lighting or binocular cameras. Such products are relatively average in terms of recognition, consistency, and image effects, which to a certain extent affects the optical effects of the products. They are usually only suitable for fixed distances and scenes, and are large in size. Cameras are expensive, which makes them difficult to flexibly adapt to complex practical application scenarios. Utility Model Content

[0003] The purpose of the utility model is to provide a diffraction optical imaging device based on VCSEL light source imaging to solve the problems mentioned in the above background technology that it is usually only applicable to fixed distances and scenes, has a large size, and the camera is expensive, which is not conducive to flexible adaptation to complex practical application scenarios.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a diffraction optical imaging device based on VCSEL light source imaging, comprising a supporting base plate and a VCSEL light source generator, an adjustment box is installed on one side of the top of the supporting base plate, a servo motor is installed on one side of the adjustment box, a threaded rod is installed inside the adjustment box, a guide groove is opened inside the top of the adjustment box, a threaded block is connected to the outer wall of the threaded rod, a guide block is installed on the top of the threaded block, a connecting block is installed on the top of the guide block, a VCSEL light source generator is installed on the top of the connecting block, a base is installed on the other side of the top of the supporting base plate, and a diffraction optical component is installed on one side of the base.

[0005] Preferably, two groups of the connecting blocks are installed at the bottom end of the vcsel light source generator, and a threaded connection is formed between the threaded block and the threaded rod.

[0006] Preferably, the diffractive optical element and the substrate are arranged on the same horizontal plane, and a cable is connected to one side of the VCSEL light source generator.

[0007] Preferably, an adhesive layer is bonded to both sides of the inner wall of the guide groove, and a protective pad is bonded and connected to one side of the adhesive layer.

[0008] Preferably, the interior of the protective pad is filled with cushioning cotton, and the protective pad is symmetrically distributed about the central axis of the guide groove.

[0009] Preferably, an outer bracket grating body is provided on one side of the substrate, and a collimating lens is installed inside the outer bracket grating body.

[0010] Preferably, a support column is installed at the bottom end of the outer bracket grating body, and a mounting seat is installed on the support bottom plate located between the adjustment box and the base.

[0011] Preferably, a threaded connection column is connected inside the mounting seat, the top end of the threaded connection column and the bottom end of the support column are fixed to each other, and a threaded connection is formed between the threaded connection column and the inside of the mounting seat.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the diffraction optical imaging device based on VCSEL light source imaging not only improves the transmitter adjustment capability, but also improves the mobile protection capability and assembly convenience of the diffraction optical imaging device;

[0013] (1) By installing the adjustment box on one side of the top of the supporting base plate, the servo motor can drive the threaded rod to rotate after it starts working. At this time, the threaded rod cooperates with the threaded block to form a threaded path. Since a guide block is fixed on the top of the threaded block, the guide block and the guide groove cooperate to form a guide connection, so the VCSEL light source generator can be driven to make a lateral adjustment, so as to adjust the distance between the VCSEL light source generator and the collimating lens. When the VCSEL light source generator is working, the light source is fixed, and the light source is diffracted by the diffraction optical element, so as to improve the diffraction effect. The overall volume is small, the diffraction range is large, the energy consumption is low, and it is also convenient to adjust the position of the VCSEL light source generator;

[0014] (2) The guide block and the guide groove are used to guide the movement, and the protective pad is bonded and fixed by an adhesive layer on both sides of the inner wall of the guide groove, and the interior of the protective pad is filled with cushioning cotton. Therefore, when the guide block moves, the protective pad and the cushioning cotton can form a side buffer under the cooperation of the protective pad and the cushioning cotton, thereby better improving the overall mobile protection capability during the working process;

[0015] (3) By installing the mounting seat at the top of the supporting base plate, the supporting column, the collimating lens, and the external bracket grating body are combined to form a whole. When assembling the collimating lens and the external bracket grating body, the mounting seat and the threaded connecting column are used to form a threaded assembly, which improves the convenience of the assembly process, thereby improving the overall assembly convenience during the work process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the front cross-sectional structure of the mounting seat of the utility model;

[0018] Figure 3It is a partial front view cross-sectional structural diagram of the regulating box of the utility model;

[0019] Figure 4 It is a schematic diagram of a partial top view cross-sectional structure of the protective pad of the utility model.

[0020] In the figure: 1. supporting base plate; 2. adjusting box; 3. threaded block; 4. threaded rod; 5. mounting seat; 6. diffraction optical element; 7. substrate; 8. collimating lens; 9. external bracket grating body; 10. guide groove; 11. connecting block; 12. guide block; 13. vcsel light source generator; 14. servo motor; 15. threaded connecting column; 16. supporting column; 17. adhesive layer; 18. protective pad; 19. buffer cotton. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 The utility model provides an embodiment: a diffraction optical imaging device based on vcsel light source imaging, comprising a supporting base plate 1 and a vcsel light source generator 13, an adjusting box 2 is installed on one side of the top of the supporting base plate 1, a servo motor 14 is installed on one side of the adjusting box 2, a threaded rod 4 is installed inside the adjusting box 2, a guide groove 10 is opened inside the top of the adjusting box 2, a threaded block 3 is connected to the outer wall of the threaded rod 4, a guide block 12 is installed on the top of the threaded block 3, a connecting block 11 is installed on the top of the guide block 12, a vcsel light source generator 13 is installed on the top of the connecting block 11, a base 7 is installed on the other side of the top of the supporting base plate 1, and a diffraction optical component 6 is installed on one side of the base 7.

[0023] Two groups of connection blocks 11 are installed at the bottom end of the VCSEL light source generator 13, and a threaded connection is formed between the threaded block 3 and the threaded rod 4.

[0024] The diffractive optical element 6 and the substrate 7 are arranged on the same horizontal plane, and a cable is connected to one side of the VCSEL light source generator 13 .

[0025] Adhesive layers 17 are bonded to both sides of the inner wall of the guide groove 10 , and a protective pad 18 is bonded and connected to one side of the adhesive layer 17 .

[0026] The interior of the protection pad 18 is filled with cushioning cotton 19 , and the protection pad 18 is symmetrically distributed about the central axis of the guide groove 10 .

[0027] An outer support grating body 9 is provided on one side of the substrate 7 , and a collimating lens 8 is installed inside the outer support grating body 9 .

[0028] A support column 16 is installed at the bottom end of the outer bracket grating body 9, and a mounting seat 5 is installed on the supporting bottom plate 1 located between the adjustment box 2 and the base 7.

[0029] The interior of the mounting seat 5 is connected with a threaded connection column 15, the top end of the threaded connection column 15 and the bottom end of the support column 16 are fixed to each other, and a threaded connection is formed between the threaded connection column 15 and the interior of the mounting seat 5;

[0030] Furthermore, the diffractive optical element 6 has a single-sided microstructure, and its microscopic morphology structural surface is a Fraunhofer diffractive optical element. The structural surface is processed into a grating phase structure in the form of a two-dimensional dot matrix after irradiation. The structural surface is a relief micromorphology, which functions to replicate the collimated light of the VCSEL chip in a periodic array.

[0031] Furthermore, the vcsel chip is an internal facility of the vcsel light source generator 13, so that collimated light can be generated when the vcsel light source generator 13 is working.

[0032] Working principle: First, when working, the servo motor 14 is started to drive the threaded rod 4 to rotate. At this time, the threaded rod 4 cooperates with the threaded block 3 to form a threaded path. Since the guide block 12 is fixed at the top of the threaded block 3, the guide block 12 and the guide groove 10 cooperate to form a guide connection, so the vcsel light source generator 13 can be driven to make lateral adjustments, so as to adjust the distance between the vcsel light source generator 13 and the collimating lens 8. When the vcsel light source generator 13 works, a fixed light source is generated, and the relative position of the diffraction optical element 6 and the light source is calibrated according to the diffraction light field formed as needed. A focused single light spot or multiple light spots are formed after passing through the collimating lens 8, and then irradiated to the diffraction optical element 6, so that the diffraction optical element 6 has the function of periodic replication, and a complete structured light diffraction light field is formed in front according to the imaging principle.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A diffraction optical imaging device based on VCSEL light source imaging, comprising a supporting base plate (1) and a VCSEL light source generator (13), characterized in that: An adjustment box (2) is installed on one side of the top of the support base plate (1), a servo motor (14) is installed on one side of the adjustment box (2), a threaded rod (4) is installed inside the adjustment box (2), a guide groove (10) is provided inside the top of the adjustment box (2), a threaded block (3) is connected to the outer wall of the threaded rod (4), a guide block (12) is installed on the top of the threaded block (3), a connecting block (11) is installed on the top of the guide block (12), a VCSEL light source generator (13) is installed on the top of the connecting block (11), a base (7) is installed on the other side of the top of the support base plate (1), and a diffractive optical element (6) is installed on one side of the base (7).

2. A diffraction optical imaging device based on VCSEL light source imaging according to claim 1, characterized in that: Two groups of the connection blocks (11) are installed at the bottom end of the VCSEL light source generator (13), and a threaded connection is formed between the threaded block (3) and the threaded rod (4).

3. The diffraction optical imaging device based on VCSEL light source imaging according to claim 1, characterized in that: The diffractive optical element (6) and the substrate (7) are arranged on the same horizontal plane, and one side of the VCSEL light source generator (13) is connected to a cable.

4. The diffraction optical imaging device based on VCSEL light source imaging according to claim 1, characterized in that: Adhesive layers (17) are bonded to both sides of the inner wall of the guide groove (10), and a protective pad (18) is bonded to one side of the adhesive layer (17).

5. The diffraction optical imaging device based on VCSEL light source imaging according to claim 4, characterized in that: The interior of the protection pad (18) is filled with cushioning cotton (19), and the protection pad (18) is symmetrically distributed about the central axis of the guide groove (10).

6. The diffraction optical imaging device based on VCSEL light source imaging according to claim 1, characterized in that: An external support grating body (9) is provided on one side of the substrate (7), and a collimating lens (8) is installed inside the external support grating body (9).

7. The diffraction optical imaging device based on VCSEL light source imaging according to claim 6, characterized in that: A support column (16) is installed at the bottom end of the outer bracket grating body (9), and a mounting seat (5) is installed on the support base plate (1) located between the adjustment box (2) and the base (7).

8. The diffraction optical imaging device based on VCSEL light source imaging according to claim 7, characterized in that: The interior of the mounting seat (5) is connected with a threaded connection column (15), the top end of the threaded connection column (15) and the bottom end of the support column (16) are fixed to each other, and a threaded connection is formed between the threaded connection column (15) and the interior of the mounting seat (5).

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