Optical system for forming diffraction light field image by using divergent laser

Abstract

The utility model discloses an optical system for forming a diffraction light field image by using divergent laser, which relates to the technical field of optical systems and comprises an outer support structure used for fixing a divergent light source, a Powell prism structure and a diffraction optical component; a divergent light source, a Powell prism structure and a diffractive optical component are sequentially arranged in the outer support structure from left to right. Light emitted by the divergent light source is divergent spherical waves; the Powell prism structure is used for converting divergent laser into line laser; the diffractive optical component is used for converting the line laser into a diffractive light field image. According to the utility model, a multi-line light field can be realized by utilizing an integrated single module, the volume is smaller, the installation is simpler and more convenient, and the multi-line light field module can be effectively applied to a three-dimensional contourgraph or a three-dimensional scanning product, a three-dimensional imaging product and the like.

Description

Technical Field

[0001] This utility model relates to the field of optical system technology, and in particular to an optical system that uses divergent laser to form a diffraction light field image. Background Technology

[0002] Currently available traditional 3D scanning methods typically use multiple line laser modules or a single line laser module combined with special diffractive optical components to achieve multi-line scanning, but cannot achieve multi-line light fields using a single module.

[0003] Because of the presence of multiple line laser modules, the structure is relatively large, making it difficult to adapt to many small-volume products. On the other hand, the method of using a single line laser module with special diffractive optical components requires separate installation of the single line laser module and diffractive optical components during actual installation, followed by calibration, which is not convenient in practical applications.

[0004] Therefore, it is necessary to invent an optical system that uses divergent lasers to form diffraction field images to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an optical system that uses divergent lasers to form diffractive light field images. This system can achieve multi-line light fields using a single integrated module, resulting in a smaller size and simpler installation. It is also effectively applicable to products such as 3D profilometers, 3D scanners, and 3D imaging systems. This addresses the problems mentioned in the background art, where the presence of multiple line laser modules leads to a relatively large structure, making it difficult to adapt to many small-volume products. Furthermore, the method of using a single line laser module with special diffractive optical components requires separate installation and calibration of the single line laser module and diffractive optical components during actual installation, which is inconvenient in practical applications.

[0006] According to one aspect of this disclosure, the following technical solution is provided: an optical system for forming a diffraction light field image using divergent laser light, comprising:

[0007] An external support structure is used to fix the diverging light source, the Powell prism structure, and the diffractive optical components.

[0008] The outer support structure contains, from left to right, a diverging light source, a Powell prism structure, and diffractive optical components.

[0009] The light emitted by the divergent light source is a divergent spherical wave;

[0010] The Powell prism structure is used to convert divergent laser light into line laser light.

[0011] The diffractive optical components are used to convert line laser light into a diffractive light field image.

[0012] According to at least one embodiment of the present disclosure, an optical system for forming a diffractive light field image using a divergent laser includes an outer support structure comprising two symmetrically arranged outer support bodies, which are fixed together by adhesive.

[0013] According to at least one embodiment of the optical system for forming a diffractive light field image using divergent laser, the outer support body has, from left to right, a light source receiving slot, a prism fixing slot, and an optical component fixing slot.

[0014] According to at least one embodiment of the present disclosure, an optical system for forming a diffractive light field image using a divergent laser is provided, wherein the divergent light source is fixedly disposed inside a light source receiving slot, the Powell prism structure is fixedly disposed inside a prism fixing slot, and the diffractive optical components are fixedly disposed inside an optical component fixing slot.

[0015] According to at least one embodiment of the present disclosure, an optical system for forming a diffractive light field image using a divergent laser, wherein the Powell prism structure comprises an integrally formed collimating lens and a Powell prism.

[0016] An optical system according to at least one embodiment of the present disclosure uses a divergent laser to form a diffractive light field image, wherein one side of the diffractive optical element is provided with an embossed micromorphology, and the embossed micromorphology is configured as a Damman grating based on Fraunhofer diffraction.

[0017] The technical effects and advantages of this utility model are as follows:

[0018] This invention integrates a divergent light source, a Powell prism structure, and diffractive optical components within an external support structure. This allows the divergent light emitted from the light source to be converted into line lasers by the Powell prism structure. The line lasers then pass through the diffractive optical components and are converted into a diffractive light field image. Compared to existing technologies, this invention can achieve multi-line light fields using a single integrated module. It is smaller in size, easier to install, and can be effectively applied to products such as 3D profilometers, 3D scanners, and 3D imaging devices. Attached Figure Description

[0019] The accompanying drawings illustrate exemplary embodiments of the present disclosure and, together with the description thereof, serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0020] Figure 1 This is a schematic diagram of the overall structure of an optical system for forming a diffractive light field image using a divergent laser, according to one embodiment of the present disclosure.

[0021] Figure 2 This is a schematic diagram of the unfolded structure of an optical system that uses divergent laser to form a diffraction field image according to one embodiment of the present disclosure.

[0022] The specific labels in the attached figures are as follows:

[0023] 11. Outer support structure; 12. Light source receiving slot; 13. Prism fixing slot; 14. Optical component fixing slot;

[0024] Diverging light source;

[0025] Powell prism structure;

[0026] Diffractive optical components. Detailed Implementation

[0027] For descriptive purposes, this disclosure may use spatial relative terms such as “below,” “under,” “below,” “down,” “above,” “above,” “higher,” and “side (e.g., as in a “sidewall”)” to describe the relationship between one component and another component as shown in the accompanying drawings. In addition to the orientations depicted in the drawings, the spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacture. For example, if the device in the drawings is flipped, a component described as “below” or “under” other components or features would subsequently be positioned “above” said other components or features. Thus, the exemplary term “below” can encompass both “above” and “below” orientations. Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or in other orientations), thus interpreting the spatial relative descriptive terms used herein accordingly.

[0028] Figure 1 This is a schematic diagram of the overall structure of an optical system for forming a diffractive light field image using a divergent laser, according to one embodiment of the present disclosure.

[0029] Figure 2 This is a schematic diagram of the unfolded structure of an optical system that uses divergent laser to form a diffraction field image according to one embodiment of the present disclosure.

[0030] like Figures 1-2 As shown, the optical system disclosed herein that uses divergent laser to form a diffractive light field image may include: an external support structure 1, a divergent light source 2, a Powell prism structure 3, and diffractive optical components 4, etc.

[0031] like Figure 2As shown in this disclosure, the outer support structure 1 includes two symmetrically arranged outer support bodies 11, which are fixed together by adhesive. The outer support bodies 11 have a light source receiving groove 12, a prism fixing groove 13, and an optical component fixing groove 14 arranged sequentially from left to right inside. The diverging light source 2 is fixedly disposed inside the light source receiving groove 12, the Powell prism structure 3 is fixedly disposed inside the prism fixing groove 13, and the diffractive optical component 4 is fixedly disposed inside the optical component fixing groove 14.

[0032] Therefore, when assembling the diverging light source 2, the Powell prism structure 3, and the diffractive optical components 4, the diverging light source 2, the Powell prism structure 3, and the diffractive optical components 4 are first fixed in the light source receiving groove 12, the prism fixing groove 13, and the optical component fixing groove 14 on the inner side of one side of the outer bracket body 11. Then, glue is applied at the connection of the outer bracket body 11, and the two outer bracket bodies 11 are bonded and fixed with glue.

[0033] By integrating the divergent light source 2, the Powell prism structure 3, and the diffractive optical element 4 inside the outer support structure 1, the divergent light emitted from the divergent light source 2 is converted into a line laser by the Powell prism structure 3. The line laser then passes through the diffractive optical element 4 and is converted into a diffractive light field image by the diffractive optical element 4. Compared with the existing technology, a multi-line light field can be realized using a single integrated module. It is smaller in size, easier to install, and can be effectively applied to products such as 3D profilometers, 3D scanning, and 3D imaging.

[0034] like Figure 2 As shown, in a preferred embodiment, the Powell prism structure 3 consists of an integrally formed collimating lens and a Powell prism.

[0035] This allows the diverging light to be converted into a line laser by passing through the collimating lens and the Powell prism.

[0036] like Figure 2 As shown in this disclosure, one side of the diffractive optical element 4 is provided with an embossed micromorphology, which is set as a Damman grating based on Fraunhofer diffraction.

[0037] Therefore, after the line laser passes through the diffractive optical element 4, it is transformed into a diffractive light field image by the diffractive optical element 4 under the action of the relief-type micro-morphology.

[0038] It should also be noted that any content not described in detail in this specification is prior art known to those skilled in the art.

[0039] Those skilled in the art should understand that the above embodiments are merely for illustrating the present disclosure and are not intended to limit the scope of the disclosure. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present disclosure.

Claims

1. An optical system for forming a diffraction field image using divergent laser light, characterized in that, include: An external support structure (1) is used to fix the divergent light source (2), the Powell prism structure (3) and the diffractive optical components (4); The outer support structure (1) contains, from left to right, a divergent light source (2), a Powell prism structure (3), and diffractive optical components (4); The light emitted by the divergent light source (2) is a divergent spherical wave; The Powell prism structure (3) is used to convert divergent laser light into line laser light. The diffractive optical element (4) is used to convert line laser light into a diffractive light field image.

2. The optical system for forming a diffraction field image using divergent laser as described in claim 1, characterized in that: The external support structure (1) includes two symmetrically arranged external support bodies (11), which are fixed together by adhesive.

3. The optical system for forming a diffraction field image using divergent laser as described in claim 2, characterized in that: The outer support body (11) has a light source receiving slot (12), a prism fixing slot (13) and an optical component fixing slot (14) arranged sequentially from left to right inside.

4. The optical system for forming a diffraction field image using divergent laser as described in claim 3, characterized in that: The divergent light source (2) is fixedly disposed inside the light source receiving groove (12), the Powell prism structure (3) is fixedly disposed inside the prism fixing groove (13), and the diffractive optical element (4) is fixedly disposed inside the optical element fixing groove (14).

5. The optical system for forming a diffraction field image using divergent laser as described in claim 4, characterized in that: The Powell prism structure (3) consists of an integrally formed collimating lens and a Powell prism.

6. The optical system for forming a diffraction field image using divergent laser as described in claim 5, characterized in that: The diffractive optical element (4) has a relief-type micro-morphology on one side, and the relief-type micro-morphology is set as a Damman grating based on Fraunhofer diffraction.

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