Optical system for additive manufacturing and additive manufacturing equipment
By introducing optical systems into additive manufacturing equipment, using beam combining technology of illumination light and guide light, the problem of poor alignment accuracy in leveling and interstitial in existing equipment is solved, and the effect of simplifying operation and reducing costs is achieved. It is suitable for complex structures and multi-material printing.
Patent Information
- Application Number
- CN202422346461.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-25
AI Technical Summary
Existing additive manufacturing equipment is complicated and has poor accuracy in the leveling and interlacing process, especially when printing complex structures or multi-materials, the equipment debugging accuracy is high and the cost is high.
An optical system is adopted, including an illumination light source, a curing light source and a guide light source. The optical path system is designed as a curing sensitive and non-sensitive band of the printing material. The material is cured and printed by the combined illumination light and guide light, and the pattern state of the molding area is observed through the pattern to be printed carried by the guide light before turning on the curing light, simplifying the leveling and incisor alignment operation.
It reduces the operational complexity of leveling and etching alignment, reduces equipment costs, and can be used for complex structures and multi-material additive printing operations, improving printing accuracy and effect.
Smart Images
Figure CN223085417U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of additive manufacturing, and particularly to an optical system for additive manufacturing and an additive manufacturing device. Background Art
[0002] An additive manufacturing device manufactures an object layer by layer by curing a printing material in layers, and can automatically print and construct the object based on a program design. During an additive manufacturing operation, the accuracy of the layer thickness is usually ensured by controlling the distance between a forming film and a forming base in a forming area. The forming film provides a flat and stable printing surface, which helps to obtain a better printing effect. However, for existing additive manufacturing devices, leveling is a relatively cumbersome process, highly dependent on the accuracy of the device itself, with poor accuracy, or a ranging sensing module needs to be added, which is costly and easily damaged. In addition, during complex structure or multi-material printing operations, there are problems with re-alignment accuracy, and high requirements for the debugging accuracy of the device. Summary of the Utility Model
[0003] The present application provides an optical system for additive manufacturing and an additive manufacturing device, which can achieve precise overlay automatic alignment.
[0004] On the one hand, the present application provides an optical system for additive manufacturing, which is applied to an additive manufacturing device and includes an illumination light source for emitting illumination light, a curing light source for emitting curing light, a guiding light source for emitting guiding light, and an optical path system. The wavelength band of the curing light is the curing sensitive wavelength band of the printing material used by the additive manufacturing device, and the wavelength bands of the illumination light and the guiding light are non-sensitive wavelength bands of the printing material;
[0005] The illumination light, the curing light, and the guiding light can irradiate the forming area of the additive manufacturing device after passing through the optical path system. The curing light and the guiding light can carry a pattern to be printed, and the curing light and the guiding light can be combined after passing through the optical path system.
[0006] In a possible implementation manner, the additive manufacturing device is provided with an image acquisition device. It is characterized in that the reflected light formed after the illumination light is projected onto the forming area can be projected onto the image acquisition device through the optical path system, and the reflected light of the illumination light can be coaxial with the image acquisition device after passing through the optical path system.
[0007] In a possible implementation manner, the additive manufacturing device is provided with an image acquisition device. It is characterized in that the reflected light formed after the guiding light is projected onto the forming area can be projected onto the image acquisition device through the optical path system, and the reflected light of the guiding light can be coaxial with the image acquisition device after passing through the optical path system.
[0008] In a possible implementation, the illumination light can be combined with the guiding light through the optical path system.
[0009] In a possible implementation, a forming film, a forming base, and a printing gap between the forming film and the forming base are provided in the forming area. A formed layer formed by curing the printing material can be present in the printing gap. It is characterized in that the pattern to be printed carried by the guiding light can be on the same focal plane as the surface of the forming base, the surface of the formed layer, or the forming film.
[0010] In a possible implementation, the optical path system includes a beam combining assembly and a processing lens group. The irradiation light, the curing light, and the guiding light can be projected onto the forming area after passing through the beam combining assembly and the processing lens group.
[0011] In a possible implementation, the beam combining assembly includes a second lens group. The second lens group is arranged between the image acquisition device and the forming area and is coaxial with the image acquisition device. The second lens group can at least receive the reflected light of the illumination light and / or the reflected light of the guiding light and project it onto the image acquisition device.
[0012] In a possible implementation, the beam combining assembly includes a first lens group and a first beam splitting assembly;
[0013] The illumination light can be projected onto the forming area after passing through the first lens group, the first beam splitting assembly, and the processing lens group; the reflected light of the illumination light can be projected onto the image acquisition device after passing through the processing lens group, the first beam splitting assembly, and the second lens group.
[0014] In a possible implementation, the beam combining assembly further includes a beam combining component, a third lens group, and a second beam splitting assembly; the curing light and the guiding light can be combined after passing through the beam combining component;
[0015] The guiding light or the curing light can be projected onto the forming area after passing through the beam combining component, the third lens group, the second beam splitting assembly, and the processing lens group; the reflected light of the guiding light or the reflected light of the curing light can be projected onto the image acquisition device after passing through the processing lens group, the second beam splitting assembly, the first beam splitting assembly, and the second lens group.
[0016] On the other hand, the present application provides an additive manufacturing device, and the additive manufacturing device includes the optical system as described above.
[0017] The optical system for additive manufacturing and the additive manufacturing device provided by the present application at least have the following technical effects:
[0018] The optical system of the present application is provided with an illumination light source for emitting illumination light, a curing light source for emitting curing light, a guiding light source for emitting guiding light, and an optical path system. The wavelength band of the curing light is the curing-sensitive wavelength band of the printing material, and the wavelength bands of the illumination light and the guiding light are the non-sensitive wavelength bands of the printing material. After passing through the optical path system, the illumination light, the curing light, and the guiding light can irradiate the forming area of the additive manufacturing device, so as to realize material curing printing through the curing light, and illuminate the forming area through the illumination light to clearly display the state of the forming area. The curing light and the guiding light carry the pattern to be printed, and can be combined after passing through the optical path system, so that before turning on the curing light to cure the printing material, the guiding light carrying the non-sensitive pattern to be printed can be used to irradiate the forming area, and the pattern state in the forming area can be observed with the assistance of the illumination light. The leveling and registration alignment of the device are realized through the clarity of the pattern, the complexity of operations such as leveling and registration alignment is reduced, and the structure of the optical path system is simple, the cost of the device is reduced, and it can be applied to additive printing operations with complex structures and multiple materials.
[0019] It can be understood that some of the additional aspects and advantages of the present application will be given in the following description, some will become apparent from the following description, or will be understood through the practice of the present application. Brief Description of the Drawings
[0020] In order to more clearly illustrate the technical solutions and advantages in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0021] Figure 1 is a schematic structural diagram of an optical system for additive manufacturing provided by an embodiment of the present application;
[0022] Figure 2 Another schematic structural diagram of an optical system for additive manufacturing provided by an embodiment of the present application;
[0023] Figure 3 is another schematic structural diagram of an optical system for additive manufacturing provided by an embodiment of the present application;
[0024] Brief Description of the Drawings: 110 - illumination light source, 120 - curing light source, 130 - guiding light source, 210 - beam combining assembly, 220 - processing lens group, 211 - first lens group, 212 - first beam splitting assembly, 213 - second lens group, 214 - beam combining component, 215 - third lens group, 216 - second beam splitting assembly, 10 - image acquisition device, 20 - forming area, 21 - forming film, 22 - forming base, 23 - printing interval. Detailed implementation manners
[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.
[0026] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned accompanying drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described here can be implemented in an order different from those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.
[0027] The following Figures 1-3 introduces an optical system for additive manufacturing provided by an embodiment of the present application, which is applied to an additive manufacturing device. Referring to Figure 1 , the optical system includes an illumination light source 110 for emitting illumination light, a curing light source 120 for emitting curing light, a guiding light source 130 for emitting guiding light, and an optical path system. The illumination light, the curing light, and the guiding light can irradiate the forming area 20 of the additive manufacturing device after passing through the optical path system. The curing light and the guiding light can carry the pattern to be printed, and the curing light and the guiding light can be combined after passing through the optical path system.
[0028] Specifically, the printing material refers to a liquid material that can react under the action of the curing light to form a cured layer, such as resin, etc. The wavelength band of the curing light is the curing sensitive wavelength band of the printing material used by the additive manufacturing device, and can cure the printing material into a forming layer. Specifically, it can be a projection light that can cure the printing material, such as ultraviolet projection light, etc., which carries the pattern to be printed on the layer to be formed. The wavelength bands of the illumination light and the guiding light are non-sensitive wavelength bands of the printing material, such as yellow light, red light, etc., to avoid optical crosstalk during the printing process that affects the curing and forming of the material, and to ensure the printing effect while realizing printing adjustment and monitoring. The illumination light can illuminate the forming area 20 without carrying a pattern. Both the guiding light and the curing light can carry the same pattern to be printed and can be combined by the optical path system, so that the irradiation position and the formed pattern of the guiding light in the forming area 20 are consistent. Furthermore, the guiding light can be used to simulate the irradiation of the curing light, for pre-stage adjustment of material curing, such as replacing the printing material or performing nesting alignment for complex deformed structures.
[0029] The optical system of the above technical solution realizes material curing printing through curing light, and illuminates the forming area 20 through illumination light to clearly display the state of the forming area 20. The curing light and the guiding light carry the pattern to be printed, and can be combined after passing through the optical path system, so that before turning on the curing light to cure the printing material, the forming area 20 can be irradiated with the insensitive pattern to be printed carried by the guiding light, so as to observe the pattern state in the forming area 20 with the assistance of the illumination light, realize equipment leveling and overlay alignment through the clarity of the pattern, reduce the operation complexity of leveling, overlay alignment, etc., and the optical path system has a simple structure, reduces the equipment cost, and can be applied to additive printing operations with complex structures and multiple materials.
[0030] In some embodiments, the illumination light can be combined with the guiding light through the optical path system. In this way, the optical axis of the illumination light converges with the optical axis of the guiding light, improving the illumination effect of the illumination light on the projection area of the guiding light, and further improving the leveling and overlay alignment effects based on the guiding light.
[0031] Reference Figure 2 , in some embodiments, a forming film 21, a forming base 22, and a printing interval 23 between the forming film 21 and the forming base 22 are provided in the forming area 20, and the printing interval 23 can have a formed layer formed by curing the printing material.
[0032] Specifically, the forming film 21 is located above the forming base 22 and can transmit the curing light, the guiding light, and the illumination light, and is used to provide a flat and stable printing surface, which helps to obtain a better printing effect. The printing interval 23 refers to the space formed between the forming surface of the forming film 21 and the forming base 22, or the space formed between the forming film 21 and the surface of the formed layer. The forming surface refers to the working area surface on the forming base 22 for curing the printing material. Specifically, during the additive manufacturing operation, the layer thickness is controlled by controlling the height of the printing interval 23, and the formable material is filled in the printing interval 23, and layer-by-layer printing is realized after photocuring.
[0033] In the specific implementation manner, the illumination light and the guiding light can be projected onto the forming film 21 and the forming base 22. Specifically, the forming film 21 can be illuminated by the illumination light and transmit the illumination light, so as to illuminate the forming surface of the forming base 22 or the formed layer on the forming surface, and the guiding light can irradiate the forming film 21 and transmit through the forming film 21 and then irradiate on the forming surface of the forming base 22 or the surface of the formed layer.
[0034] Specifically, the pattern to be printed carried by the guiding light can be on the same focal plane as the surface of the forming base 22, the surface of the formed layer, or the forming film 21. It can be understood that by adjusting the focal plane position of the guiding light, or adjusting the height of the forming film 21 or the forming base 22, the focal plane of the guiding light is coplanar with the surface (forming surface) of the forming base 22, the surface of the formed layer, or the forming film 21, so as to meet different adjustment requirements such as leveling of the forming film 21, leveling of the forming base 22, or registration alignment between the pattern to be printed and the formed layer.
[0035] Further, when the focal plane of the guiding light is coplanar with the surface of the forming base 22, the forming base can be leveled based on the pattern clarity of the guiding light at different positions on the surface of the forming base 22 under the illumination of the illumination light. When clear patterns to be printed are presented at at least three non-collinear positions, it is determined that the surface of the forming base 22 is in a horizontal state.
[0036] Similarly, when the focal plane of the guiding light is coplanar with the forming film 21, the forming film 21 can be leveled based on the pattern clarity of the guiding light at different positions on the forming film 21 under the illumination of the illumination light. When clear patterns to be printed are presented at at least three non-collinear positions, it is determined that the forming film 21 is in a horizontal state.
[0037] It can be understood that when leveling the forming film 21 and the forming base 22, the guiding light can carry the pattern to be printed or other patterns for leveling.
[0038] Further, when the focal plane of the guiding light is coplanar with the surface of the formed layer, alignment adjustment can be performed based on the position between the pattern to be printed of the guiding light and the formed pattern of the formed layer under the illumination of the illumination light, and the pattern to be printed and the formed pattern are adjusted to a target stacking state. The target stacking state is used to indicate the relative position between the layer to be printed and the formed layer. Exemplarily, the target stacking state can be that the pattern to be printed overlaps with the formed pattern.
[0039] In some embodiments, referring to Figure 2 , the additive manufacturing device is provided with an image acquisition device 10. The reflected light formed after the illumination light is projected onto the forming area 20 can be projected onto the image acquisition device 10 through the optical path system, and the reflected light of the illumination light can be coaxial with the image acquisition device 10 after passing through the optical path system. It can be understood that after the illumination light is reflected by the forming area 20, its reflected light can carry the structural features of the irradiated area, and the image acquisition device 10 can display the above structural features based on the image formed by the reflected light. For example, the reflected light after the illumination light irradiates the formed layer or the forming base 22 can carry the structural features of the formed layer and the forming base 22 and form an image area including the formed layer and the forming base 22.
[0040] In some embodiments, the reflected light formed after the guiding light is projected onto the forming area 20 can be projected onto the image acquisition device 10 through the optical path system, and the reflected light of the guiding light can be coaxial with the image acquisition device 10 after passing through the optical path system. Understandably, after the reflected light of the guiding light is received by the image acquisition device 10 and combined with the reflected light of the illumination light for imaging, it can display the pattern clarity of the guiding light irradiated onto the forming area 20, the positional relationship between the formed pattern of the formed layer and the to-be-printed pattern of the guiding light, etc., so as to facilitate operations such as registration adjustment and leveling of the forming film 21 and the forming base 22. Moreover, adjusting the reflected light of the guiding light to be coaxial with the image acquisition device 10 can ensure that the image truly reflects the clarity and focal plane position of the guiding light, and avoid interference in the analysis of the guiding light image caused by imaging errors.
[0041] Based on some or all of the above embodiments, in some embodiments, referring to Figure 1 and 2 , the optical path system includes a beam combining component 210 and a processing lens group 220, and the irradiation light, the curing light, and the guiding light can be projected onto the forming area 20 after passing through the beam combining component 210 and the processing lens group 220. The beam combining component is used to adjust the illumination light, the guiding light, or the curing light so that they are irradiated onto the forming area 20 after passing through the processing lens group 220, and at the same time, the illumination light and the curing light can be combined.
[0042] In some embodiments, referring to Figure 3 , the beam combining component 210 includes a second lens group 213. The second lens group 213 is disposed between the image acquisition device 10 and the forming area 20 and is disposed coaxially with the image acquisition device 10. The second lens group 213 can at least receive the reflected light of the illumination light and / or the reflected light of the guiding light and project it onto the image acquisition device 10. Specifically, the reflected light formed after the irradiation light, the guiding light, or the curing light is irradiated onto the forming area 20 can reach the second lens group 213 after passing through the processing lens, and after being combined by the second lens group 213, it is projected onto the image acquisition device 10 for imaging. Setting the second lens group 213 can improve the field of view brightness of the image acquisition device 10 and improve the imaging clarity and accuracy of the forming area 20 and the guiding light. In a preferred embodiment, the processing lens group 220 is coaxially disposed with the second lens group 213.
[0043] In some embodiments, referring to Figure 3, the integrated beam assembly 210 includes a first lens group 211 and a first beam splitting assembly 212; the illumination light can be projected onto the forming area 20 after passing through the first lens group 211, the first beam splitting assembly 212, and the processing lens group 220; the reflected light of the illumination light can be projected onto the image acquisition device 10 after passing through the processing lens group 220, the first beam splitting assembly 212, and the second lens group 213. The first lens group 211 processes the illumination light to improve the beam stability, luminous intensity of the illumination light and remove stray light, and the first beam splitting assembly 212 performs beam splitting processing so that the image acquisition device 10 can receive the reflected light required for imaging.
[0044] In a preferred embodiment, the first lens group 211 and the processing lens group 220 are coaxially arranged. More preferably, the first lens group 211, the processing lens group 220, and the first beam splitting assembly 212 are coaxially arranged.
[0045] In some embodiments, refer to Figure 3 , the integrated beam assembly 210 further includes a beam combining assembly 214, a third lens group 215, and a second beam splitting assembly 216; the curing light and the guiding light can be combined after passing through the beam combining assembly 214; the guiding light or the curing light can be projected onto the forming area 20 after passing through the beam combining assembly 214, the third lens group 215, the second beam splitting assembly 216, and the processing lens group 220; the reflected light of the guiding light or the reflected light of the curing light can be projected onto the image acquisition device 10 after passing through the processing lens group 220, the second beam splitting assembly 216, the first beam splitting assembly 212, and the second lens group 213. By providing the beam combining assembly 214 to combine the guiding light and the curing light, and performing light processing through the third lens group 215 to improve the stability of the guiding light and the pattern clarity, and then projecting the light onto the processing lens group 220 through the second beam splitting assembly 216, and then projecting it onto the forming area 20, the reflected light of the guiding light and the curing light passes through the processing lens group 220, the second beam splitting assembly 216, the first beam splitting assembly 212, and the second lens group 213 and is projected onto the image acquisition device 10 to form an image in the image acquisition device 10. Moreover, the first beam splitting assembly 212 and the second beam splitting assembly 216 are arranged in the reflection optical paths of the illumination light, the guiding light, and the curing light to simplify the complexity of the optical path.
[0046] In a preferred embodiment, the third lens group 215 and the processing lens group 220 are coaxially arranged. More preferably, the third lens group 215, the processing lens group 220, and the second beam splitting assembly 216 are coaxially arranged.
[0047] Specifically, the first beam splitting assembly 212 can reflect at least part of the illumination light, and transmit at least part of the reflected light of the illumination light, at least part of the reflected light of the guiding light, and at least part of the reflected light of the curing light (such as Figure 3as shown), or the first beam splitting component 212 can transmit at least part of the illumination light and reflect at least part of the reflected light of the illumination light, at least part of the reflected light of the guiding light, and at least part of the reflected light of the curing light (not shown). The second beam splitting component 216 can reflect at least part of the guiding light and at least part of the curing light, and can transmit at least part of the reflected light of the guiding light, at least part of the reflected light of the curing light, and the reflected light of at least part of the illumination light (as Figure 3 shown), or the second beam splitting component 216 can transmit at least part of the guiding light and at least part of the curing light, and can reflect at least part of the reflected light of the guiding light, at least part of the reflected light of the curing light, and the reflected light of at least part of the illumination light (not shown).
[0048] In a specific embodiment, the beam combining component 214 can be a beam splitting element that can transmit the guiding light and reflect the curing light, or transmit the curing light and reflect the guiding light to achieve the beam combination of the two.
[0049] The present application also provides an additive manufacturing device, which includes the optical system as described above.
[0050] In some embodiments, the additive manufacturing device includes an image acquisition device 10 and a motion mechanism; a forming film 21, a forming base 22, and a printing gap 23 between the forming film 21 and the forming base 22 are provided in the forming area 20 of the device, and the printing gap 23 is used to fill the material to be printed; the motion mechanism is in transmission connection with the forming film 21 and the forming base 22; the image acquisition device 10 can image based on the reflected light of the illumination light and the reflected light of the guiding light. By simultaneously imaging the to-be-printed pattern carried by the guiding light and the forming layer, the registration alignment adjustment can be achieved. And by imaging the guiding light on the surface of the forming film 21 or the forming base 22, the surface flatness of the forming film 21 and the forming base 22 can be adjusted based on the imaging clarity of the to-be-printed pattern to meet the leveling requirements.
[0051] It should be noted that: the above sequence of the embodiments of the present application is only for description and does not represent the superiority or inferiority of the embodiments. And the above specific embodiments of the present application have been described. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in a different order than in the embodiments and still achieve the desired results. Additionally, the processes depicted in the figures do not necessarily require the specific order or continuous order shown to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.
[0052] The embodiments in the present application are all described in a progressive manner. For the same or similar parts among the embodiments, reference can be made to each other, and the key points of each embodiment are the differences from other embodiments. In particular, for the embodiments of the device, equipment, and storage medium, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can refer to the description of the method embodiments.
[0053] Those of ordinary skill in the art can understand that all or part of the steps to implement the above embodiments can be completed by hardware, or can be completed by a program instructing the relevant hardware. The program can be stored in a computer-readable storage medium. The above-mentioned storage medium can be a read-only memory, a magnetic disk, an optical disk, or the like.
[0054] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, 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 optical system for additive manufacturing, which is applied to an additive manufacturing device, and is characterized in that, It includes an illumination light source (110) for emitting illumination light, a curing light source (120) for emitting curing light, a guiding light source (130) for emitting guiding light, and an optical path system. The wavelength band of the curing light is the curing-sensitive wavelength band of the printing material used by the additive manufacturing device, and the wavelength bands of the illumination light and the guiding light are the non-sensitive wavelength bands of the printing material; After passing through the optical path system, the illumination light, the curing light, and the guiding light can irradiate the forming area (20) of the additive manufacturing device. The curing light and the guiding light can carry the pattern to be printed, and after passing through the optical path system, the curing light and the guiding light can be combined.
2. The optical system according to claim 1, wherein The additive manufacturing device is provided with an image acquisition device (10). The reflected light formed after the illumination light is projected onto the forming area (20) can be projected onto the image acquisition device (10) through the optical path system, and the reflected light of the illumination light can be coaxial with the image acquisition device (10) after passing through the optical path system.
3. The optical system according to claim 1, characterized in that, The additive manufacturing device is provided with an image acquisition device (10). The reflected light formed after the guiding light is projected onto the forming area (20) can be projected onto the image acquisition device (10) through the optical path system, and the reflected light of the guiding light can be coaxial with the image acquisition device (10) after passing through the optical path system.
4. The optical system according to claim 1, wherein The illumination light can be combined with the guiding light through the optical path system.
5. The optical system according to any one of claims 1-4, characterized in that, A forming film (21), a forming base (22), and a printing gap (23) between the forming film (21) and the forming base (22) are arranged in the forming area (20), and the printing gap (23) can have a formed layer formed by curing the printing material; The pattern to be printed carried by the guiding light can be on the same focal plane as the surface of the forming base (22), the surface of the formed layer, or the forming film (21).
6. The optical system according to any one of claims 1-4, characterized in that The optical path system includes a beam combining component (210) and a processing lens group (220). The illumination light, the curing light, and the guiding light can be projected onto the forming area (20) after passing through the beam combining component (210) and the processing lens group (220).
7. The optical system according to claim 6, characterized in that, The beam combining component (210) includes a second lens group (213). The second lens group (213) is arranged between the image acquisition device (10) and the forming area (20) and is coaxial with the image acquisition device (10). The second lens group (213) can at least receive the reflected light of the illumination light and / or the reflected light of the guiding light and project it onto the image acquisition device (10).
8. The optical system according to claim 7, characterized in that, The beam combining component (210) includes a first lens group (211) and a first beam splitting component (212); The illumination light can be projected onto the forming area (20) after passing through the first lens group (211), the first beam splitting component (212), and the processing lens group (220); the reflected light of the illumination light can be projected onto the image acquisition device (10) after passing through the processing lens group (220), the first beam splitting component (212), and the second lens group (213).
9. The optical system according to claim 8, characterized in that, The beam combining assembly (210) further includes a beam combining component (214), a third lens group (215), and a second beam splitting component (216); the curing light and the guiding light can be combined after passing through the beam combining component (214). The guiding light or the curing light can be projected onto the forming area (20) after passing through the beam combining component (214), the third lens group (215), the second beam splitting component (216), and the processing lens group (220); the reflected light of the guiding light or the reflected light of the curing light can be projected onto the image acquisition device (10) after passing through the processing lens group (220), the second beam splitting component (216), the first beam splitting component (212), and the second lens group (213).
10. An additive manufacturing device, characterized in that, The additive manufacturing equipment includes the optical system according to any one of claims 1-9.