Light source mechanism and three-dimensional printing equipment

Abstract

The utility model discloses a light source mechanism and three-dimensional printing equipment. Wherein the light source mechanism at least comprises a movable light path changing assembly, a first light source assembly and a second light source assembly, the first light source assembly and the second light source assembly are respectively used for emitting light rays with different wave bands, and the light path changing assembly is used for changing light path tracks of the light rays emitted by the first light source assembly and the second light source assembly. According to the utility model, the technical problem that the spectrum coverage rate is greatly limited in order to ensure the light combination efficiency in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical transmission and the technical field of three-dimensional printing, and in particular to a light source mechanism and a three-dimensional printing device. Background Art

[0002] At present, in order to ensure the efficiency of combining lights of multiple bands, the related technology requires that the difference between the peak wavelengths of the light source spectrum needs to reach a predetermined value, otherwise the overlapping of the spectrum curves may cause loss of light efficiency. If the difference in peak wavelengths is insufficient, the energy of the transmitted light after combining will drop significantly, thereby affecting the overall light source utilization efficiency. In order to ensure the efficiency of combining lights, the related technology requires that there be at least a predetermined difference value between the peak wavelengths of the light source spectrum. This restriction limits the selection of light sources, and too wide a wavelength spacing may also lead to low spectrum utilization, resulting in a waste of light energy. It also causes the problem of limited spectral coverage in the related technology, and the combination of lights has great limitations, making it difficult to meet diverse application needs.

[0003] To address the above-mentioned problems, no effective solution has been proposed yet. Utility Model Content

[0004] The embodiments of the utility model provide a light source mechanism and a three-dimensional printing device to at least solve the technical problem in the related art that the spectrum coverage is greatly limited in order to ensure the light combining efficiency.

[0005] According to one aspect of an embodiment of the utility model, a light source mechanism is provided, which comprises at least a movable optical path changing component, a first light source component, and a second light source component, wherein the first light source component and the second light source component are respectively used to emit light of different wavelength bands, and the optical path changing component is used to change the optical path trajectory of the light emitted by the first light source component and the second light source component.

[0006] Optionally, the optical path changing component is any one of the following: a reflective sheet or a light combining sheet, and the difference between the peak wavelengths of the light emitted by the first light source component and the second light source component is greater than or equal to 0 nanometer.

[0007] Optionally, the first light source assembly and the second light source assembly respectively encapsulate a light-emitting component and a lens assembly corresponding to at least one wavelength band, the light-emitting component corresponding to at least one wavelength band encapsulated by the first light source assembly includes a first light-emitting component, and the light-emitting component corresponding to at least one wavelength band encapsulated by the second light source assembly includes a second light-emitting component.

[0008] Optionally, the first light-emitting component and the second light-emitting component are arranged orthogonally, and a rotation axis is arranged in the optical path changing component, and the rotation axis is arranged at the end of the optical path changing component close to the first light-emitting component and the second light-emitting component, or the rotation axis is arranged at the end of the optical path changing component away from the first light-emitting component and the second light-emitting component, or the rotation axis is arranged inside the optical path changing component.

[0009] Optionally, the rotation axis is set to be perpendicular to a first predetermined plane, and the optical path changing component moves around the rotation axis in the first predetermined plane, wherein the first predetermined plane is a plane composed of the light emitted by the first light-emitting component and the light emitted by the second light-emitting component; or, the rotation axis is set to be parallel to the first predetermined plane, and the optical path changing component moves around the rotation axis in a plane perpendicular to the first predetermined plane.

[0010] Optionally, the first light-emitting component and the second light-emitting component are arranged opposite to each other, and the first light-emitting component and the second light-emitting component are respectively placed orthogonal to the target light path, and a rotation axis is arranged inside the light path changing component; or, the light path changing component includes a first changing component and a second changing component, and the rotation axis includes a first axis and a second axis, the first axis is used for the first changing component to rotate and move around the axis, and the second axis is used for the second changing component to rotate and move around the axis, and the movement trajectory around the first axis intersects with the movement trajectory around the second axis.

[0011] Optionally, the first light-emitting element and the second light-emitting element are arranged orthogonally, the first light-emitting element is placed opposite to the target light path, and the light path changing component moves in a first predetermined plane along a direction opposite to the second light-emitting element, wherein the first predetermined plane is a plane composed of the light emitted by the first light-emitting element and the light emitted by the second light-emitting element; or, the light path changing component is used to move in a direction perpendicular to the first predetermined plane.

[0012] Optionally, the first light-emitting member and the second light-emitting member are placed opposite to each other, and the first light-emitting member and the second light-emitting member are respectively placed orthogonal to the target light path, and the light path changing component includes a first changing component and a second changing component, and the first changing component moves along a first translation trajectory; the second changing component moves along a second translation trajectory, wherein the first translation trajectory intersects with the second translation trajectory.

[0013] Optionally, a third light source assembly is further included, the third light source assembly includes a third light-emitting element, the third light-emitting element is placed orthogonally to the first light-emitting element, the third light-emitting element and the second light-emitting element are arranged side by side, the optical path changing assembly includes a first changing assembly and a second changing assembly, the first changing assembly is used to control the light emitted by the first light-emitting element and / or the second light-emitting element to a relay lens, the relay lens is arranged between the first changing assembly and the second changing assembly, and the second changing assembly is used to control the light passing through the relay lens and / or the light emitted by the third light-emitting element to the target optical path.

[0014] Optionally, the light-emitting components corresponding to at least one band are arranged in a linear manner and / or a matrix manner, and are respectively encapsulated in the first light source assembly and the second light source assembly, wherein the matrix arrangement at least includes an arrangement with a predetermined number of rows and columns and a U-shaped arrangement.

[0015] Optionally, the rotation angle of the optical path changing component includes 45° to 180°.

[0016] Optionally, the light source mechanism further includes an optical device disposed on the target light path, wherein the optical device includes a digital micromirror device, a silicon-based liquid crystal panel, or a transmissive liquid crystal panel.

[0017] According to one aspect of the embodiments of the utility model, a three-dimensional printing device is provided, comprising any one of the light source mechanisms described above.

[0018] In the embodiment of the utility model, the light source mechanism is provided to include at least a movable light path changing component, a first light source component, and a second light source component, wherein the first light source component and the second light source component are respectively used to emit light of different wavelength bands, and the light path changing component is used to change the light path trajectory of the light emitted by the first light source component and the second light source component. The purpose of improving the light combining efficiency by changing the angle of the light path trajectory by providing a movable light path changing component is achieved, and the technical effect of reducing the restrictiveness of the light source peak difference value and improving the flexibility of spectrum selection is achieved, thereby solving the technical problem in the related art that the spectrum coverage is greatly limited in order to ensure the light combining efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0020] Figure 1 is a schematic diagram of an optional light source mechanism provided according to an embodiment of the utility model;

[0021] Figure 2 It is a first rotation schematic diagram of an optional light source mechanism provided according to an embodiment of the utility model;

[0022] Figure 3 is a second rotation schematic diagram of an optional light source mechanism provided according to an embodiment of the utility model;

[0023] Figure 4 is a third rotation schematic diagram of an optional light source mechanism provided according to an embodiment of the utility model;

[0024] Figure 5 is a fourth rotation schematic diagram of an optional light source mechanism provided according to an embodiment of the utility model;

[0025] Figure 6 is a fifth rotation schematic diagram of an optional light source mechanism provided according to an embodiment of the utility model;

[0026] Figure 7 is a sixth rotation schematic diagram of an optional light source mechanism provided according to an embodiment of the utility model;

[0027] Figure 8 It is a first translation schematic diagram of an optional light source mechanism provided according to an embodiment of the utility model;

[0028] Fig. 9 is a second translation schematic diagram of an optional light source mechanism provided according to an embodiment of the utility model;

[0029] Fig.10 is a third translation schematic diagram of an optional light source mechanism provided according to an embodiment of the utility model;

[0030] Fig.11 is a fourth translation schematic diagram of an optional light source mechanism provided according to an embodiment of the utility model;

[0031] Fig.12 It is a schematic diagram of a first light-emitting combination of an optional light source mechanism provided according to an embodiment of the utility model;

[0032] Fig.13 It is a schematic diagram of a second light-emitting combination of an optional light source mechanism provided according to an embodiment of the utility model;

[0033] Fig.14 It is a schematic diagram of a third light-emitting combination of an optional light source mechanism provided according to an embodiment of the utility model;

[0034] Fig.15 is a schematic diagram of another light source mechanism provided according to an embodiment of the utility model;

[0035] Fig.16 is a schematic diagram of another light source mechanism provided according to an embodiment of the utility model;

[0036] Fig.17 is a schematic diagram of an optional three-dimensional printing device provided according to an embodiment of the utility model;

[0037] Among them, the figure marks include: light source mechanism 10, printing area 11, molding platform 12, optical path changing component 20, first optical path changing component 21, first light source component 31, second light source component 32, third light source component 33, second optical path changing component 22, first light-emitting component 41, second light-emitting component 42, third light-emitting component 43, fourth light-emitting component 44, fifth light-emitting component 45, sixth light-emitting component 46, rotating axis 50, first axis 51, second axis 52, target optical path 60, first lens assembly 61, second lens assembly 62, third lens assembly 63, relay lens 64, optical device 70. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0039] It should be noted that the terms "first", "second", etc. in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the utility model described herein can be implemented in an order other than those illustrated or described herein.

[0040] In order to ensure the efficiency of light combination, the spectrum curve emitted by the light source has a peak wavelength spacing width of at least 40nm (nanometers), otherwise the light efficiency will be greatly lost after light combination. The peak wavelength bands of the commonly used curing light sources in the related technology are relatively concentrated. For example, the peaks that can be used are around 365nm, 385nm, 395nm, 405nm, 425nm, 450nm, etc. The peak wavelengths of these light sources are relatively close. Due to the errors in the light source production process, the actual peak wavelength difference may be smaller, even close to 0nm.

[0041] When the light combining method of the related technology is used to combine two or more LED light sources with very close peak wavelengths directly through a light combining sheet, there will be a problem that the effective utilization efficiency of the combined light source will be greatly reduced due to the overlap of the spectral curves. If the theoretical difference in the peak wavelengths of the two light sources is only 10nm, after the light is combined by the dichroic light combining sheet, the transmitted light energy may be less than 50% of the output of the light source itself, resulting in a large amount of light energy being wasted and unable to be effectively utilized. Therefore, the application scope of light combining technology is limited, especially in situations where efficient use of light energy is required. In addition, due to the limitations of light source selection, it may not be able to meet diverse application needs.

[0042] In view of the above problems, the present invention provides a light source mechanism. Figure 1 is a schematic diagram of an optional light source mechanism provided according to an embodiment of the utility model, such as Figure 1 As shown, the above-mentioned light source mechanism 10 at least includes a movable optical path changing component 20, a first light source component 31, and a second light source component 32, wherein the first light source component 31 and the second light source component 32 are respectively used to emit light of different wavelength bands, and the optical path changing component 20 is used to change the optical path trajectory of the light emitted by the first light source component 31 and the second light source component 32.

[0043] In the light source mechanism provided in the embodiment of the utility model, the first light source component 31 and the second light source component 32 respectively emit light of different wavelength bands. These lights may originally have low light combining efficiency due to spectral overlap. By introducing a movable optical path changing component 20, the optical path trajectory of the light emitted by the first light source component 31 and the second light source component 32 is dynamically adjusted. This means that even if the peak wavelengths of the two light source components are very close or even the same, the optical path changing component 20 can ensure that their lights do not interfere with each other by changing the angle of the optical path trajectory, thereby avoiding the loss of light efficiency caused by spectral overlap. Through the above-mentioned arrangement, the light source mechanism 10 overcomes the limitations of the light combining application on the difference in peak wavelengths in the related art, and improves the utilization efficiency of the light source. At the same time, since the optical path changing component 20 is movable, the light source mechanism 10 has a high degree of flexibility and can adapt to the application requirements of light of different wavelength bands.

[0044] In an optional embodiment, the light path changing component 20 is any one of the following: a reflective sheet or a light combining sheet, and the difference between the peak wavelengths of the light emitted by the first light source component 31 and the second light source component 32 is greater than or equal to 0 nanometer.

[0045] It can be understood that the optical path changing component 20 can be a reflector or a light combining sheet. Both types of components can change the propagation path of light and can be set as needed. When the optical path changing component 20 is a reflector, it changes the optical path trajectory through reflection to ensure that the light emitted by different light source components can be propagated along a predetermined path, thereby avoiding spectral overlap. Through this setting, the peak wavelength difference between the light emitted by the first light source component 31 and the second light source component 32 is 0 nanometers (that is, the peak wavelength is the same), and the reflection effect of the reflector can also achieve effective separation of light and maintain light combining efficiency.

[0046] When the optical path changing component 20 is a light combiner, it can be further a dichroic light combiner, which uses the principle of dichroism to allow light of a specific wavelength to pass through while reflecting or absorbing light of other wavelengths. In this way, the light combiner can ensure that the light emitted by different light source components does not interfere with each other during the light combining process. Similarly, even if the peak wavelengths of the first light source component 31 and the second light source component 32 are the same, the light combiner can achieve effective separation and combination of light through its unique filtering characteristics.

[0047] Optionally, the reflective sheet is a device that reflects light, and can also be a wedge prism, a single isosceles right-angle prism, a double-glued isosceles right-angle prism, a reflective bowl, a reflective lens, etc.

[0048] In an optional embodiment, the first light source assembly 31 and the second light source assembly 32 respectively encapsulate a light-emitting component and a lens assembly corresponding to at least one band, the light-emitting component corresponding to at least one band encapsulated by the first light source assembly 31 includes a first light-emitting component 41, and the light-emitting component corresponding to at least one band encapsulated by the second light source assembly 32 includes a second light-emitting component 42, and the lens assembly is used to collimate the transmitted light.

[0049] It can be understood that the first light source assembly 31 and the second light source assembly 32 both encapsulate a light-emitting component and a lens assembly corresponding to at least one band. The optical performance of the light source mechanism is optimized, and the utilization rate and light combining efficiency of the light source are improved. The first light source assembly 31 includes a first light-emitting component 41, and the second light source assembly 32 includes a second light-emitting component 42, which can be selected and configured according to different application requirements to ensure that the light source mechanism can emit light of the required band, and flexibly adapt to multi-band applications so that the light source mechanism can adapt to different application scenarios. The introduction of the lens assembly collimates the light emitted by the light-emitting component, that is, the light is propagated in a parallel or approximately parallel state. By providing a lens assembly to provide a collimating effect, the propagation efficiency and utilization rate of the light can be significantly improved, and the scattering and loss of light can be reduced.

[0050] Optionally, the above-mentioned light-emitting parts can be of multiple types, for example, light-emitting semiconductor chips including LEDs and lasers, or phosphors that can radiate other wavelengths after being irradiated by light, or other light-emitting devices such as bulbs / lasers / LEDs (light emitting diodes, Light Emitting Diodes) / laser-irradiated phosphors, etc. The emitted light is coupled to the light outlet (target light path) of the position after filtering.

[0051] In an optional embodiment, the first light-emitting component 41 and the second light-emitting component 42 are arranged orthogonally, and a rotation axis 50 is arranged in the optical path changing component 20. The rotation axis 50 is arranged at the end of the optical path changing component 20 close to the first light-emitting component 41 and the second light-emitting component 42, or the rotation axis 50 is arranged at the end of the optical path changing component 20 away from the first light-emitting component 41 and the second light-emitting component 42, or the rotation axis 50 is arranged inside the optical path changing component 20.

[0052] It can be understood that the first light-emitting component 41 and the second light-emitting component 42 are arranged to be orthogonal, that is, their optical axes are perpendicular to each other, and a rotating shaft 50 is arranged in the optical path changing component 20, so that the optical path changing component can adjust the position and angle of the rotating shaft 50 as needed to achieve effective adjustment of the light emitted by different light source components. The rotating shaft 50 can be arranged at the end of the optical path changing component 20 close to the first light-emitting component 41 and the second light-emitting component 42, or the rotating shaft 50 can be arranged opposite to the end of the optical path changing component 20 away from the first light-emitting component 41 and the second light-emitting component 42, and can also be arranged inside the optical path changing component 20 (such as the midpoint position), so that the optical path changing component 20 is more compact and integrated. The setting of the rotating shaft 50 allows the optical path changing component 20 to flexibly adjust the angle and position, and the optical path changing component 20 is rotated to adjust the propagation path of the light, so that the light can be combined or separated in a predetermined manner.

[0053] In an optional embodiment, the rotation axis 50 is set to be perpendicular to the first predetermined plane, and the optical path changing component 20 moves around the rotation axis 50 in the first predetermined plane, wherein the first predetermined plane is a plane composed of the light emitted by the first light-emitting component 41 and the light emitted by the second light-emitting component 42; or, the rotation axis 50 is set to be parallel to the first predetermined plane, and the optical path changing component 20 moves around the rotation axis 50 in a plane perpendicular to the first predetermined plane.

[0054] It can be understood that the rotation axis 50 can be set to be perpendicular to the first predetermined plane, or it can be set to be parallel to the first predetermined plane, and these two settings correspond to different movement and adjustment modes. When the rotation axis 50 is perpendicular to the first predetermined plane, the light path changing component 20 will move around the rotation axis 50 in the first predetermined plane. The first predetermined plane is a plane composed of the light emitted by the first light emitting component 41 and the light emitted by the second light emitting component 42. The above setting enables the light path changing component 20 to move in a plane parallel to the light emitting surface of the light source component.

[0055] When the rotation axis 50 is parallel to the first predetermined plane, the optical path changing component 20 will move around the rotation axis 50 in a plane perpendicular to the first predetermined plane. The above arrangement enables the optical path changing component 20 to move in a plane perpendicular to the light emitting surface of the light source component, thereby achieving another form of adjustment of the light. By setting the rotation axis 50 perpendicular to or parallel to the first predetermined plane, the position and angle of the optical path changing component 20 are adjusted to achieve effective management of the light emitted by different light source components, avoid spectral overlap, and improve light combining efficiency.

[0056] Figure 2 is a first rotation schematic diagram of an optional light source mechanism provided according to an embodiment of the utility model, such as Figure 2 As shown, it includes an optical path changing component 20, a first lens component 61, a second lens component 62, a first light source component 31, a second light source component 32, a rotation axis 50, and a target optical path 60. The first light source component 31 includes a first light emitting member 41 and a first lens component 61, and the second light source component 32 includes a second light emitting member 42 and a second lens component 62, which can emit light of two different wavelength bands.

[0057] The first light-emitting component 41 is placed orthogonally to the second light-emitting component 42. When the first light-emitting component 41 is turned on, the second light-emitting component 42 is turned off. The optical path changing component 20 is not in the optical path of the first light source component 31. The light emitted by the first light source component 31 is collimated by the lens component 21 and directly enters the next group of other optical paths.

[0058] When the second light source assembly 32 needs to be lit, the first light source assembly 31 is turned off, and the optical path changing assembly 20 rotates a certain angle (indicated by the dotted frame at the original position). When the optical path changing assembly 20 rotates at an angle of 45° (degrees), the first light source assembly 31 and the second light source assembly 32 are placed orthogonally, and the first light emitting element 41 faces the incident target optical path 60. The light emitted by the second light emitting element 42 is collimated by the second lens assembly 62 and then reflected by the optical path changing assembly 20, so that the light enters the next group of target optical paths 60 in the same incident direction as the original first light emitting element 41.

[0059] The optical path changing component 20 rotates around the axis. Figure 2In the example shown, the rotation axis 50 is set perpendicular to the predetermined first plane, that is, perpendicular to the paper plane. The position of the rotation axis 50 is shown as the initial axis that intersects with the axis after rotation. The actual direction and position of the light path changing component 20 rotating around the rotation axis 50 are not fixed. The light path changing component 20 will only rotate to the required light path position when a certain light source needs to be reflected to the next set of target light paths 60. When not needed, the light path changing component 20 needs to rotate to other positions without affecting other light sources.

[0060] Optionally, the rotation axis 50 set in a direction perpendicular to the paper plane is not necessarily located exactly on the edge of the optical path changing component 20 close to the first light-emitting component 41 and the second light-emitting component 42, but may be located at an end away from the first light-emitting component 41 and the second light-emitting component 42, or may pass through the interior of the optical path changing component 20.

[0061] Figure 3 is a second rotation schematic diagram of an optional light source mechanism provided according to an embodiment of the utility model, such as Figure 3 As shown, the position of the rotating shaft 50 which is arranged perpendicular to the predetermined first plane is arranged at an end away from the first light-emitting member 41 and the second light-emitting member 42 for rotation.

[0062] Figure 4 is a third rotation schematic diagram of an optional light source mechanism provided according to an embodiment of the utility model, such as Figure 4 As shown, the position of the rotation axis 50 is set inside the optical path changing component 20. The first light source component 31 and the second light source component 32 are placed opposite each other. When the first light emitting component 41 is lit, the second light emitting component 42 is turned off. The light emitted by the first light emitting component 41 is collimated by the second lens component 62, and then passes through the optical path changing component 20 to reflect the collimated light into the next group of target optical paths 60.

[0063] When the second light emitting element 42 needs to be lit, the first light emitting element 41 is turned off, and the light path changing component 20 rotates to Figure 4 At the position of the right side of the figure, after the light emitted by the first light emitting element 41 is collimated by the second lens assembly 62, the light is reflected by the light path changing assembly 20 and enters the next set of target light paths 60 in the same direction as the first light emitting element 41. The setting direction of the rotation axis 50 is predetermined by the first plane, that is, perpendicular to the paper surface, and is located between the first light source assembly 31 and the second light source assembly 32.

[0064] Optionally, the rotation axis 50 can also enable the optical path changing component 20 to rotate in a direction perpendicular to a predetermined first plane, that is, perpendicular to the paper surface. Figure 5 is a fourth rotation schematic diagram of an optional light source mechanism provided according to an embodiment of the utility model, such as Figure 5As shown, the first light source assembly 31 and the second light source assembly 32 are placed orthogonally. When the first light source assembly 31 is turned on, the second light source assembly 32 is turned off. The optical path changing assembly 20 intervenes in the optical path that is not in the first light source assembly 31. The light emitted by the first light source assembly 31 is collimated by the lens assembly 21 and directly enters the next set of target optical paths 60.

[0065] When the second light source assembly 32 needs to be lit, the first light source assembly 31 is turned off, and the light path changing assembly 20 rotates a certain angle. The minimum rotation angle of the light path changing assembly 20 is determined by the actual light passing area and the position of the rotation axis 50, and the maximum rotation angle is 180°. Figure 5 In the example, it is assumed that the rotation is 180°, and the first light source assembly 31 is facing the incident target light path 60. The light emitted by the second light source assembly 32 is collimated by the lens assembly 21 and then reflected by the light path changing assembly 20, so that the light source enters the next set of target light paths 60 in the same incident direction as the original first light source assembly 31.

[0066] The light path changing component 20 rotates around an axis, and the rotation axis 50 is set to be parallel to the paper direction and has a certain angle with the light propagation axis of the first light source component 31 and the second light source component 32. The rotation axis 50 is located in a space where the first light source component 31 and the second light source component 32 are close to each other. The light path changing component 20 will rotate to the light path position only when a certain light path needs to be reflected to the next group of other light paths. When it is not needed, the light path changing component 20 needs to rotate to other positions, which will not affect other groups of light sources.

[0067] The rotation axis 50 parallel to the paper plane is not necessarily located at the edge of the optical path changing component 20 , but may be located at an end away from the first light source component 31 and the second light source component 32 , or may pass through the interior of the optical path changing component 20 .

[0068] In an optional embodiment, the first light-emitting component 41 and the second light-emitting component 42 are arranged opposite to each other, and the first light-emitting component 41 and the second light-emitting component 42 are respectively placed orthogonally to the target light path 60, and a rotation axis 50 is arranged inside the light path changing component 20; or, the light path changing component 20 includes the first changing component 21 and the second changing component 22, and the rotation axis 50 includes a first axis 51 and a second axis 52, the first axis 51 is used for the first changing component 21 to rotate and move around the axis, and the second axis 52 is used for the second changing component 22 to rotate and move around the axis, and the movement trajectory around the first axis 51 intersects with the movement trajectory around the second axis 52.

[0069] It can be understood that the first light emitting member 41 and the second light emitting member 42 are arranged relative to each other. By placing the first light emitting member 41 and the second light emitting member 42 orthogonally to the target light path 60, respectively, it can be ensured that the emitted light remains perpendicular to the target light path, thereby facilitating subsequent light path adjustment. A rotating shaft 50 can be set inside the light path changing component 20, which can rotate and move around the axis to adjust the propagation path of the light. Or when the light path changing component 20 includes the first changing component 21 and the second changing component 22, the first axis 51 and the second axis 52 can be set respectively to control their rotation and movement, and the movement trajectory around the first axis 51 intersects with the movement trajectory around the second axis 52. Through the above-mentioned setting, the first changing component 21 and the second changing component 22 can work together to achieve multi-angle and multi-directional adjustment of the light.

[0070] Optionally, Figure 6 is a fifth rotation diagram of an optional light source mechanism provided according to an embodiment of the utility model, such as Figure 6 As shown, the position of the rotation axis 50 is parallel to the predetermined first plane, that is, parallel to the paper direction, and is arranged to rotate at one end away from the first light-emitting member 41 and the second light-emitting member 42. The above-mentioned light path changing component 20 may include a plurality of first changing components 21 and second changing components 22. The first changing component 21 has its own rotation axis, that is, the first axis 51, and the second changing component 22 has its own rotation axis, that is, the second axis 52.

[0071] Figure 7 is a sixth rotation schematic diagram of an optional light source mechanism provided according to an embodiment of the utility model, such as Figure 7 As shown, the first light emitting member 41 and the second light emitting member 42 are placed opposite to each other. When the first light emitting member 41 is on, the second light emitting member 42 is off. The positions of the first changing component 21 and the second changing component 22 are rotated as shown in FIG. Figure 7 The left side figure shows that after the light emitted by the first light emitting element 41 is collimated by the first lens assembly 61 , the light passes through the first changing assembly 21 and reflects the collimated light into the next set of target light paths 60 .

[0072] When the second light-emitting element 42 needs to be lit, the first light-emitting element 41 is turned off, and the first change component 21 and the second change component 22 are rotated to the position of the right side of the screenshot. After the light emitted by the second light-emitting element 42 is collimated by the second lens component 62, the light is reflected by the second lens component 62 and enters the next set of target light paths 60 in the same direction as the first light-emitting element 41. The first axis 51 corresponding to the first change component 21 and the second axis 52 corresponding to the second change component 22, the axis direction of both rotations is perpendicular to the predetermined first plane, that is, perpendicular to the paper surface, and can be set near the edge of the first change component 21 and the second change component 22. Figure 7The position shown is only one of them, and the first axis 51 and / or the second axis 52 can also be Figure 7 The first changing component 21 and the second changing component 22 rotate around the corresponding rotation axis to enter the optical path when needed, and rotate around the corresponding rotation axis to outside the optical path when not needed. Only one changing component can be in the optical path at a time.

[0073] In an optional embodiment, the first light-emitting component 41 and the second light-emitting component 42 are arranged orthogonally, the first light-emitting component 41 is placed opposite to the target optical path 60, and the optical path changing component 20 moves in a first predetermined plane along a direction opposite to the second light-emitting component 42, wherein the first predetermined plane is a plane composed of the light emitted by the first light-emitting component 41 and the light emitted by the second light-emitting component 42; or, the optical path changing component 20 is used to move along a direction perpendicular to the first predetermined plane.

[0074] It can be understood that the first light emitting member 41 and the second light emitting member 42 are arranged orthogonally, and at the same time, the first light emitting member 41 is placed opposite to the target light path 60, and the light path changing component 20 can move in the first predetermined plane along the direction opposite to the second light emitting member 42. The first predetermined plane here is a plane composed of the light emitted by the first light emitting member 41 and the light emitted by the second light emitting member 42. The light path changing component 20 can also move in a direction perpendicular to the first predetermined plane. This movement mode enables the light path changing component 20 to be adjusted in a direction perpendicular to the light emitting surface of the light source component.

[0075] Optionally, the optical path changing component 20 may also adopt a linear translation mode. Figure 8 is a first translation schematic diagram of an optional light source mechanism provided according to an embodiment of the utility model, such as Figure 8 As shown, the first changing component 21 is placed orthogonally to the second changing component 22. When the first light-emitting component 41 is turned on, the second light-emitting component 42 is turned off. The optical path changing component 20 is not in the optical path of the first changing component 21. The light emitted by the first light-emitting component 41 is collimated by the first lens component 61 and directly enters the next group of target optical paths 60.

[0076] When the second light-emitting element 42 needs to be lit, the first light-emitting element 41 is turned off, and the optical path changing component 20 is translated into the optical path. The light emitted by the second light-emitting element 42 is collimated by the second lens component 62, and then reflected by the optical path changing component 20, so that the second light-emitting element 42 enters the next set of target optical paths 60 in the same incident direction as the first light-emitting element 41.

[0077] The optical path changing component 20 will only be translated to the optical path position when a certain light source needs to be reflected to the next set of target optical paths 60. When it is not necessary, the optical path changing component 20 needs to be translated to other positions without affecting other sets of light sources. It should be noted that the above translation method can adopt a linear translation method or a non-linear translation method as needed.

[0078] Optionally, the optical path changing component 20 includes Figure 8 The optical path can be translated into the light path in the illustrated direction, or can be translated into the light path in the direction perpendicular to the picture. The optical path changing component 20 can be translated into the light path from the top or bottom, respectively. Fig. 9 is a second translation schematic diagram of an optional light source mechanism provided according to an embodiment of the utility model, such as Fig. 9 As shown, the optical path changing component 20 performs optical path changing by translating from the top into the light passing area. Fig.10 is a third translation schematic diagram of an optional light source mechanism provided according to an embodiment of the utility model, such as Fig.10 As shown, the optical path changing component 20 performs optical path change by translating from the bottom into the light passing area.

[0079] In an optional embodiment, the first light-emitting member 41 and the second light-emitting member 42 are placed opposite to each other, and the first light-emitting member 41 and the second light-emitting member 42 are respectively placed orthogonal to the target optical path 60, and the optical path changing component 20 includes a first changing component 21 and a second changing component 22, and the first changing component 21 moves along a first translation trajectory; the second changing component 22 moves along a second translation trajectory, wherein the first translation trajectory intersects with the second translation trajectory.

[0080] It can be understood that the first light emitting member 41 and the second light emitting member 42 are placed opposite to each other, and the first light emitting member 41 and the second light emitting member 42 are placed orthogonally to the target light path 60. The light path changing component 20 includes a first changing component 21 and a second changing component 22, which are respectively responsible for controlling the light emitted by different light sources. The first changing component 21 moves along a first translation trajectory, and the second changing component 22 moves along a second translation trajectory. Through the above arrangement, the two changing components can move on different paths, thereby realizing multi-angle and multi-directional adjustment of the light.

[0081] Optionally, Fig.11 is a fourth translation schematic diagram of an optional light source mechanism provided according to an embodiment of the utility model, such as Fig.11 As shown, the first changing component 21 and the second changing component 22 are placed opposite each other. When the first light-emitting component 41 is lit, the second light-emitting component 42 is turned off. After the first changing component 21 is translated into the light path of the first light-emitting component 41, the light emitted by the first light-emitting component 41 is collimated by the first lens component 61, and then reflected by the first changing component 21 into the next group of target light paths 60.

[0082] When the second light-emitting component 42 needs to be turned on, the first light-emitting component 41 is turned off, the first light-changing component 21 is translated out of the light path, and the second light path changing component 22 is translated into the light path. The light emitted by the second light-emitting component 42 is collimated by the second lens component 62, and then reflected by the second light path changing component 22, so that the reflected light enters the next group of target light paths 60 with the same incident direction as the original first light-emitting component 41. The light path changing component will only be translated to the light path position when a certain light source needs to be reflected to the next group of other light paths. When it is not needed, the reflector needs to be translated to other positions without affecting the placement of other groups of reflectors. The above-mentioned translation method of the light path changing component 20, except Fig.11 In addition to the linear translation method shown above, there are also various non-linear translation methods such as right-angle turns.

[0083] In an optional embodiment, a third light source assembly 33 is further included, the third light source assembly 33 includes a third light-emitting element 43, the third light-emitting element 43 is placed orthogonally to the first light-emitting element 41, the third light-emitting element 43 and the second light-emitting element 42 are arranged side by side, the optical path changing assembly 20 includes a first changing assembly 21 and a second changing assembly 22, the first changing assembly 21 is used to control the light emitted by the first light-emitting element 41 and / or the second light-emitting element 42 to the relay lens 64, the relay lens 64 is arranged between the first changing assembly 21 and the second changing assembly 22, and the second changing assembly 22 is used to control the light passing through the relay lens 64 and / or the light emitted by the third light-emitting element 43 to the target optical path 60.

[0084] It can be understood that the third light emitting member 43 included in the third light source assembly 33 is placed orthogonally to the first light emitting member 41, and the third light emitting member 43 is arranged side by side with the second light emitting member 42. The optical path changing assembly 20 can be divided into a first changing assembly 21 and a second changing assembly 22, which work together to achieve the adjustment of the light emitted by different light sources. The first changing assembly 21 is mainly used to adjust the light emitted by the first light emitting member 41 and / or the second light emitting member 42 to the relay lens 64. The relay lens 64 can transfer the light adjusted by the first changing assembly 21 to the second changing assembly 22, thereby achieving the transition and conversion of the optical path. The second changing assembly 22 is responsible for adjusting the light passing through the relay lens 64 and / or the light emitted by the third light emitting member 43 to the target optical path 60. The second changing assembly 22 can not only adjust the light passing through the relay lens 64, but also directly control the light emitted by the third light emitting member 43 so that it can accurately enter the target optical path 60.

[0085] Optionally, Fig.12 is a schematic diagram of a first light-emitting combination of an optional light source mechanism provided according to an embodiment of the utility model, such as Fig.12As shown, the first light source assembly 31 includes a first light-emitting element 41 and a first lens assembly 61, the second light source assembly 32 includes a second light-emitting element 42 and a second lens assembly 62, and the third light source assembly 33 includes a third light-emitting element 43 and a third lens assembly 63. The optical path changing assembly 20 can be configured as a dichroic light combining plate type, wherein the first changing assembly 21 is used for combining the light emitted by the first light-emitting element 41 and the second light-emitting element 42, the second changing assembly 22 is used for combining the light emitted by the first light-emitting element 41, the second light-emitting element 42, and the third light-emitting element 43, and a relay lens 64 is provided for light relaying so that the light enters the target optical path 60 as needed. It should be noted that the first changing assembly 21 and the second changing assembly 22 can enter or move out of the light-transmitting area in any of the above-mentioned embodiments.

[0086] Optionally, Fig.13 is a schematic diagram of a second light-emitting combination of an optional light source mechanism provided according to an embodiment of the utility model, such as Fig.13 As shown, the first light-emitting component 41 and the fourth light-emitting component 44 are packaged together, or are mounted on the same substrate, or are closely attached together, and they share a set of lens components, such as a common first lens component 61. The second light-emitting component 42 is independently packaged, and the above packaging method is only an example and can be configured as needed. The second light-emitting component 42 can be lit alone, and when it is lit alone, the first light-emitting component 41 and the fourth light-emitting component 44 are turned off. The first light-emitting component 41 and the fourth light-emitting component 44 that share the first lens component 61 can light up one of them alone, such as a chip of a certain wavelength band, or the first light-emitting component 41 and the fourth light-emitting component 44 can light up at the same time. When the independently packaged second light-emitting component 42 is lit, the optical path changing component 20 that cooperates with it enters the optical path, and the optical path changing component 20 that cooperates with other light sources moves out of the optical path. When the first light-emitting element 41 and the fourth light-emitting element 44 sharing the first lens assembly 61 are lit, the light path changing assembly 20 cooperating therewith enters the light path, and the light path changing assembly 20 cooperating with the independently packaged third light-emitting element 43 moves out of the light path. The light path changing assembly 20 may enter or move out of the light path in any of the above-mentioned embodiments, such as rotation, linear translation, non-linear translation, and other various methods.

[0087] In an optional embodiment, the light-emitting components corresponding to at least one band are arranged linearly and / or in a matrix, and are respectively encapsulated in the first light source assembly 31 and the second light source assembly 32, wherein the matrix arrangement at least includes an arrangement with a predetermined number of rows and columns and a V-shaped arrangement.

[0088] It can be understood that the linear arrangement means that the light-emitting elements are arranged in a row and column manner, including the way of not setting light-emitting elements for a predetermined row and column. The matrix arrangement means that the light-emitting elements are arranged in a matrix (i.e., a two-dimensional grid) form, and preferably also includes the arrangement in the shape of a utensil character.

[0089] Optionally, if there are a first light-emitting element 41, a third light-emitting element 43, a fourth light-emitting element 44, a fifth light-emitting element 45, a sixth light-emitting element 46, and a seventh light-emitting element 47 available for selection and arrangement (the quantity is not limited, only for example), Fig.14 It is a schematic diagram of the third light-emitting combination of an optional light source mechanism provided by an embodiment of the present invention. As Fig.14 shown, the first light-emitting element 41 and the third light-emitting element 43 can be linearly arranged in a 1*2 manner, or the first light-emitting element 41, the third light-emitting element 43, and the fourth light-emitting element 44 can be linearly arranged in a 1*3 manner, etc.

[0090] They can be arranged as the first light-emitting element 41, the third light-emitting element 43, the fourth light-emitting element 44, and the fifth light-emitting element 45 in a 2*2 matrix arrangement in the shape of a field character.

[0091] Or the first light-emitting element 41, the third light-emitting element 43, and the fourth light-emitting element 44 are in the first row, and the fifth light-emitting element 45, the sixth light-emitting element 46, and the seventh light-emitting element 47 are in the second row in a 2*3 matrix arrangement.

[0092] The first light-emitting element 41, the third light-emitting element 43, the fourth light-emitting element 44, the fifth light-emitting element 45, the sixth light-emitting element 46, and the seventh light-emitting element 47 can also be arranged in the shape of a utensil character, or randomly arranged within a predetermined range.

[0093] In an optional embodiment, the rotation angle of the optical path changing component 20 includes 45° to 180°.

[0094] It can be understood that the rotation angle of the optical path changing component 20 can be preferably set to include a range of 45° (degrees) to 180°.

[0095] In an optional embodiment, the light source mechanism further includes an optical device 70 disposed on the target optical path, and the optical device 70 includes a digital micromirror device, a liquid crystal on silicon panel, or a transmissive liquid crystal panel.

[0096] As Fig.15 、 Fig.16As shown, an optical device 70 is arranged on the target light path, and the optical device 70 is configured to convert the light into the target light, and the target light is irradiated onto the liquid photosensitive material, so that the specific photosensitive material is solidified according to the predetermined pattern information. In this embodiment, the optical device 70 can be a reflective light valve, such as a digital micromirror device (DMD) or a silicon-based liquid crystal panel (LCOS panel). In another embodiment, the optical device 70 can be a transmissive liquid crystal panel (LCD), or a component with the same function.

[0097] Among them, the optical path changing component 20 can use a reflector. Two reflectors are placed in the device, each of which can rotate around an axis. The first light source component 31 and the second light source component 32 are placed facing the reflectors respectively. When the first light source component 31 is lit, the other light sources are turned off, and the reflector reflects the emitted light into the corresponding light path. The light emitted by the first light source component 31 is collimated by the optical lens group and reflected by the reflector, and then irradiated onto the LCD screen to provide backlight for the LCD; when the second light source component 32 needs to be lit, the other light sources are turned off, and the reflector corresponding to the second light source component 32 rotates a certain angle to reflect the emitted light into the corresponding light path. The angle of rotation of the reflector is determined according to the angle between the light source and the other light paths. In this embodiment, it is rotated 90°, and the first light source component 31 and the second light source component 32 are placed orthogonally.

[0098] Among them, the reflector rotates around the axis. The axis in this embodiment is vertical to the screen. The axis position is the axis that intersects initially and after rotation. The actual direction and position of the reflector rotating around the axis are not fixed. The reflector will only rotate to the light path position when a certain light source needs to be reflected to the LCD light path. When not needed, the reflective sheet needs to be rotated to other positions without affecting other groups of light sources.

[0099] Through the above-mentioned setting, the above-mentioned light source mechanism 10 at least includes a movable light path changing component 20, a first light source component 31, and a second light source component 32, wherein the first light source component 31 and the second light source component 32 are respectively used to emit light of different wavelength bands, and the light path changing component 20 is used to change the light path trajectory of the light emitted by the first light source component 31 and the second light source component 32. The purpose of improving the light combining efficiency can be achieved by setting a movable light path changing component to change the angle of the light path trajectory, and the technical effect of reducing the limit of the light source peak difference value and improving the flexibility of spectrum selection is achieved, thereby solving the technical problem in the related art that the spectrum coverage is greatly limited in order to ensure the light combining efficiency.

[0100] In this embodiment, a three-dimensional printing device is also provided. The device is used to implement the above-mentioned embodiments and preferred implementation modes, and those that have been explained will not be repeated here.

[0101] According to an embodiment of the utility model, an embodiment of a three-dimensional printing device is also provided. Fig.17 is a schematic diagram of an optional three-dimensional printing device provided according to an embodiment of the utility model, such as Fig.17 As shown, the three-dimensional printing device includes: a light source mechanism 10, a printing area 11, and a molding platform 12. The printing area 11 is used to fill the printing material (such as photosensitive resin), and the molding platform 12 is used to solidify and mold the target three-dimensional object thereon.

[0102] Optionally, the light source mechanism 10 provided in the above three-dimensional printing device may be one or more.

[0103] In the above embodiments of the present invention, the description of each embodiment has different emphases. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0104] The above are only preferred implementations of the embodiments of the utility model and are not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the scope of the claims of the utility model.

Claims

1. A light source mechanism, characterized in that: The light source mechanism includes at least a movable optical path changing component, a first light source component and a second light source component; wherein the first light source component and the second light source component are respectively used to emit light of different wavelength bands, and the optical path changing component is used to change the optical path trajectory of the light emitted by the first light source component and the second light source component.

2. The light source mechanism according to claim 1, characterized in that: The optical path changing component is any one of the following: a reflective sheet or a light combining sheet, and the difference between the peak wavelengths of the light emitted by the first light source component and the second light source component is greater than or equal to 0 nanometer.

3. The light source mechanism according to claim 1, characterized in that: The first light source assembly and the second light source assembly respectively encapsulate a light-emitting component and a lens assembly corresponding to at least one wavelength band. The light-emitting component corresponding to at least one wavelength band encapsulated by the first light source assembly includes a first light-emitting component, and the light-emitting component corresponding to at least one wavelength band encapsulated by the second light source assembly includes a second light-emitting component.

4. The light source mechanism according to claim 3, characterized in that: The first light-emitting component and the second light-emitting component are arranged orthogonally, and a rotation axis is arranged in the optical path changing component. The rotation axis is arranged at the end of the optical path changing component close to the first light-emitting component and the second light-emitting component, or the rotation axis is arranged at the end of the optical path changing component away from the first light-emitting component and the second light-emitting component, or the rotation axis is arranged inside the optical path changing component.

5. The light source mechanism according to claim 4, characterized in that: The rotation axis is set to be perpendicular to a first predetermined plane, and the optical path changing component moves around the rotation axis in the first predetermined plane, wherein the first predetermined plane is a plane formed by the light emitted by the first light emitting element and the light emitted by the second light emitting element; or, The rotation axis is arranged to be parallel to the first predetermined plane, and the optical path changing component moves around the rotation axis in a plane perpendicular to the first predetermined plane.

6. The light source mechanism according to claim 3, characterized in that: The first light emitting member and the second light emitting member are arranged opposite to each other, the first light emitting member and the second light emitting member are respectively placed orthogonally to the target light path, and a rotation axis is arranged inside the light path changing component; or, The optical path changing component includes a first changing component and a second changing component, and the rotation axis includes a first axis and a second axis. The first axis is used for the first changing component to rotate and move around the axis, and the second axis is used for the second changing component to rotate and move around the axis. The movement trajectory around the first axis intersects with the movement trajectory around the second axis.

7. The light source mechanism according to claim 3, characterized in that: The first light emitting member and the second light emitting member are arranged orthogonally, and the first light emitting member is placed opposite to the target light path. The optical path changing component moves in a first predetermined plane along a direction opposite to the second light emitting element, wherein the first predetermined plane is a plane formed by the light emitted by the first light emitting element and the light emitted by the second light emitting element; or The optical path changing component is used to move along a direction perpendicular to the first predetermined plane.

8. The light source mechanism according to claim 3, characterized in that: The first light emitting member and the second light emitting member are placed opposite to each other, and the first light emitting member and the second light emitting member are placed orthogonally to the target light path respectively. The optical path changing component includes a first changing component and a second changing component, the first changing component moves along a first translation trajectory; the second changing component moves along a second translation trajectory, wherein the first translation trajectory intersects with the second translation trajectory.

9. The light source mechanism according to claim 3, characterized in that: It also includes a third light source assembly, which includes a third light-emitting element. The third light-emitting element is placed orthogonally to the first light-emitting element, and the third light-emitting element is arranged side by side with the second light-emitting element. The optical path changing assembly includes a first changing assembly and a second changing assembly. The first changing assembly is used to control the light emitted by the first light-emitting element and / or the second light-emitting element to a relay lens, and the relay lens is arranged between the first changing assembly and the second changing assembly. The second changing assembly is used to control the light passing through the relay lens and / or the light emitted by the third light-emitting element to the target optical path.

10. The light source mechanism according to claim 1, characterized in that: The light-emitting parts corresponding to at least one band are arranged linearly and / or in a matrix, and are respectively encapsulated in the first light source assembly and the second light source assembly, wherein the matrix arrangement at least includes an arrangement with a predetermined number of rows and columns and a V-shaped arrangement.

11. The light source mechanism according to claim 1, characterized in that: The rotation angle of the optical path changing component ranges from 45° to 180°.

12. The light source mechanism according to claim 1, characterized in that: The invention also includes an optical device arranged on the target light path, wherein the optical device includes a digital micromirror device, a silicon-based liquid crystal panel or a transmissive liquid crystal panel.

13. A three-dimensional printing device, characterized in that: The light source mechanism comprises any one of claims 1 to 12.

Images