Projection system and vehicle projection device

Abstract

The utility model discloses a projection system and a vehicle projection device. The projection system provided by the utility model comprises a multi-color integrated light source, a focusing module, an imaging assembly and a lens, wherein the multi-color integrated light source is used for selectively emitting at least one of light beams with multiple colors; the focusing module is located on a light path of the light beam and used for receiving and focusing the light beam; the imaging assembly is used for receiving the light beams emitted by the focusing module, and the imaging assembly is used for adjusting the light beams so that the light beams can be emitted as image light beams; the lens is used for receiving the light beams emitted by the imaging assembly and emitting the image light beams to a projection plane. Through the above implementation mode, at least one of light beams of multiple colors can be selectively emitted through the multi-color integrated light source, and color or black-and-white imaging can be performed on the projection plane through the focusing module, the imaging assembly and the lens without additionally arranging a plurality of independent light sources, so that the projection system is simpler in structure and more compact in structure. The size required by the projection system is reduced, and the cost is saved.

Description

Technical Field

[0001] This application relates to the field of projection technology, and particularly to a projection device. Background Art

[0002] With the progress of science and technology, projection optical engines have been widely used in the automotive field, such as HUD, window projection, and ground projection. To meet different usage scenarios and certain customization requirements, the projection screen has gradually evolved from black and white to monochrome and color. The decisive device among them is the light source.

[0003] However, current projection systems often require multiple light sources to achieve color and white projection. Due to the large number of light sources, there are risks of complex optical systems, increased volume, and increased costs. Summary of the Utility Model

[0004] The main purpose of this application is to provide a vehicle lamp device, aiming to solve the above-mentioned technical problems existing in the prior art.

[0005] To solve the above problems, this application provides a projection system, which includes: a multi-color integrated light source, a focusing module, an imaging component, and a lens. The multi-color integrated light source is used to selectively emit at least one of a variety of color beams; the focusing module is located on the optical path of the beam for receiving and focusing the beam for emission; the imaging component is used to receive the beam emitted by the focusing module, and the imaging component is used to adjust the beam so that the beam is emitted as an image beam; the lens is used to receive the beam emitted by the imaging component, and the lens is used to emit the image beam to the projection plane.

[0006] In some embodiments, the multi-color integrated light source includes a substrate and a plurality of point light sources, and the plurality of point light sources are arranged on the substrate, wherein at least two of the point light sources have different colors.

[0007] In some embodiments, the plurality of point light sources are arranged in an array on the substrate.

[0008] In some embodiments, the plurality of point light sources include at least two of a red point light source, a green point light source, a blue point light source, and a white point light source.

[0009] In some embodiments, the imaging component includes a film, the film is located in the focusing area of the focusing module, and the film is formed with an occlusion pattern for occluding part of the beam so that the remaining beam is emitted as an image beam.

[0010] In some embodiments, the imaging component includes a collimation module, and the collimation module is located in the focusing area of the focusing module to receive the beam and emit the beam parallelly.

[0011] In some embodiments, the imaging component further includes a fly-eye lens, and the fly-eye lens is located downstream of the collimation module on the optical path.

[0012] In some embodiments, the imaging assembly further includes an adjustment module and an imaging chip. The adjustment module is located downstream of the compound eye lens on the optical path and is configured to receive a light beam and output the light beam to the imaging chip, so that the imaging chip outputs an image light beam.

[0013] In some embodiments, the adjustment module includes a prism. The prism has a light-transmitting surface facing the compound eye lens and a reflecting surface disposed opposite to the light-transmitting surface. The light beam enters the prism through the light-transmitting surface and is output to the imaging chip. The imaging chip outputs an image light beam to the reflecting surface and is reflected to the lens through the reflecting surface.

[0014] To solve the above problems, the present application further provides a vehicle projection device, which includes the projection system of any one of the above.

[0015] Compared with the prior art, the present application provides a projection system, which includes: a multi-color integrated light source, a focusing module, an imaging assembly, and a lens. The multi-color integrated light source is configured to selectively output at least one of a plurality of color light beams; the focusing module is located on the optical path of the light beam and is configured to receive and focus and output the light beam; the imaging assembly is configured to receive the light beam output by the focusing module, and the imaging assembly is configured to adjust the light beam so that the light beam is output as an image light beam; the lens is configured to receive the light beam output by the imaging assembly and output the image light beam to the projection plane. Through the above embodiments, at least one of a plurality of color light beams can be selectively output by the multi-color integrated light source, and color or black-and-white imaging can be performed on the projection plane through the focusing module, the imaging assembly, and the lens. Thus, there is no need to additionally provide a plurality of independent light sources, making the structure of the projection system more concise, greatly reducing the volume required by the projection system, and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the embodiments. 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.

[0017] Figure 1 is a schematic structural diagram of a vehicle projection device according to one or more embodiments of the present application;

[0018] Figure 2 is a schematic structural diagram of a multi-color integrated light source of a projection system according to one or more embodiments of the present application;

[0019] Figure 3 is a first schematic structural diagram of a projection system according to one or more embodiments of the present application;

[0020] Figure 4 It is the second structural schematic diagram of a projection system according to one or more embodiments of the present application.

[0021] Reference numerals in the drawings: vehicle projection device 1; projection system 2; multi-color integrated light source 10; light beam 11; imaging light beam 111; substrate 12; point light source 13; focusing module 20; focusing area 21; imaging component 30; film 31; collimating module 32; fly-eye lens 33; adjusting module 34; prism 340; light-transmitting surface 341; reflecting surface 342; imaging chip 35; lens 40. Detailed implementation manners

[0022] Hereinafter, embodiments of the technical solutions of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, and therefore are only examples and cannot be used to limit the protection scope of the present application.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0024] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality" is more than two, unless otherwise specifically defined.

[0025] Referring to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0026] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0027] In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two). Similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0028] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present application.

[0029] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0030] With the progress of science and technology, projection optical machines have been widely used in the automotive field, such as HUD, window projection, and ground projection. In order to meet different usage scenarios and certain customization requirements, the projection screen has gradually evolved from black and white to monochrome and color. The decisive device among them is the light source.

[0031] However, current projection systems often require multiple light sources to achieve color and white projection. Due to the large number of light sources, there is a risk of complex optical systems, increased volume, and increased cost.

[0032] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of a vehicle projection device according to one or more embodiments of the present application.

[0033] To solve the above problems, the present application also provides a vehicle projection device 1, and the vehicle projection device 1 includes a projection system 2. The vehicle projection device 1 can be used to be installed on a vehicle and perform projection display, such as head-up display, interior projection, exterior projection, or in-vehicle entertainment system projection, etc. The vehicle projection device 1 can include, but is not limited to, a projector, etc. Among them, the projector can be, but is not limited to, an LCOS (Liquid Crystal on Silicon) projector, a DLP (Digital Light Processing) projector, an LCD (Liquid Crystal Display) projector, etc.

[0034] Please refer to Figures 2 - 3 , Figure 2 which is a schematic structural diagram of a multi-color integrated light source of a projection system according to one or more embodiments of the present application; Figure 3 which is a first schematic structural diagram of a projection system according to one or more embodiments of the present application.

[0035] To solve the above problems, the present application provides a projection system 2, and the projection system 2 includes: a multi-color integrated light source 10, a focusing module 20, an imaging component 30, and a lens 40. The multi-color integrated light source 10 is used to selectively emit at least one of a plurality of color beams 11; the focusing module 20 is located on the optical path of the beam 11 and is used to receive and focus the beam 11 for emission; the imaging component 30 is used to receive the beam 11 emitted by the focusing module 20, and the imaging component 30 is used to adjust the beam 11 so that the beam 11 is emitted as an image beam 11; the lens 40 is used to receive the beam 11 emitted by the imaging component 30, and the lens 40 is used to emit the image beam 11 to the projection plane.

[0036] The multi-color integrated light source 10 can selectively emit at least one of a plurality of color light beams 11. Exemplarily, the multi-color integrated light source 10 can emit at least one of red, green, blue, and white light beams 11. For example, the multi-color integrated light source 10 can emit a red light beam 11 alone, or a green light beam 11, or a blue light beam 11, or a white light beam 11. The multi-color integrated light source 10 can also emit a red light beam 11 and a green light beam 11 simultaneously, or a red light beam 11 and a blue light beam 11 simultaneously, or a green light beam 11 and a blue light beam 11 simultaneously. In some application scenarios, the multi-color integrated light source 10 can also emit a red light beam 11, a green light beam 11, and a blue light beam 11 simultaneously. The focusing module 20 can receive the light beam 11 emitted by the multi-color integrated light source 10 and focus and emit the light beam 11. The focusing module 20 can include, but is not limited to, a single focusing lens or a combination of multiple focusing lenses, or other optical elements capable of focusing the light beam 11, etc. The imaging assembly 30 can adjust the light beam 11 after being focused by the focusing lens so that the light beam 11 is emitted as an image light beam 11. The image light beam 11 refers to the light beam 11 that contains image information after being adjusted by the imaging assembly 30. It can be understood that after the lens 40 receives the image light beam 11, it can emit the image light beam 11 to the projection plane and form an observable image on the projection plane.

[0037] Through the above embodiments, at least one of a plurality of color light beams 11 can be selectively emitted by the multi-color integrated light source 10, and color or black-and-white imaging can be performed on the projection plane through the focusing module 20, the imaging assembly 30, and the lens 40. Thus, there is no need to additionally set up a plurality of independent light sources, making the structure of the projection system 2 more concise, greatly reducing the volume required by the projection system 2, saving costs, and broadening the application scenarios of the projection system 2.

[0038] In some embodiments, the multi-color integrated light source 10 includes a substrate 12 and a plurality of point light sources 13. The plurality of point light sources 13 are disposed on the substrate 12, wherein at least two of the point light sources 13 have different colors. The substrate 12 can provide support and fixation for the plurality of point light sources 13. A driving circuit can also be formed on the substrate 12. The driving circuit can be used to light different point light sources 13 so that different point light sources 13 emit different color light beams 11. The point light source 13 can include, but is not limited to, LED lamp beads, etc. Exemplarily, different color point light sources 13 can be different color LEDs.

[0039] In some embodiments, an array of multiple point light sources 13 is arranged on a substrate 12. The arrangement of the multiple point light sources 13 may include, but is not limited to, a matrix array, a honeycomb array, a triangular array, and the like. For example, the multiple point light sources 13 are arranged in a matrix array, and the number of point light sources 13 is four, which are evenly arranged on the substrate 12 in a form of two rows and four columns. Thus, the multiple point light sources 13 arranged in an array can make the distribution of the point light sources 13 more uniform and reasonable, reduce the setting difficulty of the point light sources 13, and the multiple point light sources 13 arranged in an array can further improve the light output efficiency of the multi-color integrated light source 10.

[0040] In some embodiments, the multiple point light sources 13 include at least two of a red point light source 13, a green point light source 13, a blue point light source 13, and a white point light source 13. Exemplarily, when the number of point light sources 13 is four, the four point light sources 13 can be a red point light source 13, a green point light source 13, a blue point light source 13, and a white point light source 13 respectively. When the point light source 13 is an LED, the red point light source 13, the green point light source 13, the blue point light source 13, and the white point light source 13 can be a red LED, a green LED, a blue LED, and a white LED respectively. It should be noted that the multiple point light sources 13 can be lit simultaneously, or one or more of the multiple point light sources 13 can be lit separately. Exemplarily, the red point light source 13 can be lit separately to emit a red light beam 11, the white point light source 13 can be lit separately to emit a white light beam 11, or the red point light source 13 and the green point light source 13 can be lit simultaneously to emit a mixed-color light beam 11, etc. In some application scenarios, the red point light source 13, the green point light source 13, and the blue point light source 13 can be lit simultaneously to emit a white light beam 11.

[0041] In some embodiments, the imaging component 30 includes a film 31. The film 31 is located in the focusing area 21 of the focusing module 20. The film 31 is formed with an occlusion pattern for occluding part of the light beam 11 so that the remaining light beam 11 exits as an image light beam 11. The film 31 is located in the focusing area 21 of the focusing module 20. It can be understood that the focusing area 21 can refer to the area where the light beam 11 converges after passing through the focusing module 20. The focal point of the focusing module 20 is located within the focusing area 21, so as to facilitate the film 31 to better receive the light beam 11. The film 31 may include, but is not limited to, a film (Film), and a pattern is printed on the film. The light beam 11 emitted by the multi-color integrated light source 10 hits the film. The pattern area of the film can be penetrated, and the non-pattern area cannot be penetrated. After the light beam 11 passes through the film 31, part of the light beam 11 is occluded by the occlusion pattern, and the remaining light beam 11 forms an image light beam 11 containing image information. The lens 40 receives and emits the image light beam 11, and an image can be projected on the projection plane.

[0042] Please refer to Figure 4 , Figure 4It is a second structural schematic diagram of a projection system according to one or more embodiments of the present application.

[0043] In some embodiments, the imaging component 30 includes a collimation module 32. The collimation module 32 is located in the focusing area 21 of the focusing module 20 to receive the light beam 11 and emit the light beam 11 in parallel. The collimation module 32 may include optical elements such as lenses, mirrors, diaphragms, etc. The collimation module 32 is located in the focusing area 21 of the focusing module 20, which is convenient for the collimation module 32 to fully receive the light beam 11. Thus, the scattered light beam 11 emitted by the multi-color integrated light source 10 can be converted into a parallel light beam 11 by the collimation module 32.

[0044] In some embodiments, the imaging component 30 further includes a fly-eye lens 33. The fly-eye lens 33 is located downstream of the collimation module 32 in the optical path. The fly-eye lens 33 is formed by a combination of a series of small lenses. Applying a double-row fly-eye lens 33 array to the illumination system can obtain high light energy utilization and large-area uniform illumination. Thus, the fly-eye lens 33 can be used to receive the parallel light beam 11 converted by the collimation module 32 and emit the parallel light beam 11 with uniform light, so that the brightness of the light beam 11 is more uniform.

[0045] In some embodiments, the imaging component 30 further includes an adjustment module 34 and an imaging chip 35. The adjustment module 34 is located downstream of the fly-eye lens 33 in the optical path and is used to receive the light beam 11 and emit the light beam 11 to the imaging chip 35, so that the imaging chip 35 emits an image light beam 11. The adjustment module 34 can be used to adjust the received light beam 11 by means of refraction, reflection, etc. to change the optical path of the light beam 11, so that the light beam 11 is emitted to the imaging chip 35. The imaging chip 35 may include, but is not limited to, DMD (Digital Micromirror Device). DMD is a micro-optical switch array based on semiconductor technology and is developed by Texas Instruments. DMD is the core component of Digital Light Processing (DLP) technology and is widely used in projectors, large-screen display systems, laser printing, and other spectral analysis and light beam 11 control fields. There are many pixel-level rotating galvanometers on the DMD. With the help of an electronic image processing system, the desired image can be dynamically projected. Thus, the light beam 11 emitted by the multi-color integrated light source 10 can be converted into an image light beam 11 by the adjustment module 34 and the imaging chip 35, so that the lens 40 projects the image light beam 11 onto the projection plane and forms an image.

[0046] In some embodiments, the adjustment module 34 includes a prism 340. The prism 340 has a light-transmitting surface 341 facing the compound eye lens 33 and a reflecting surface 342 disposed opposite to the light-transmitting surface 341. The light beam 11 enters the prism 340 through the light-transmitting surface 341 and exits to the imaging chip 35. The imaging chip 35 emits an image light beam 11 towards the reflecting surface 342 and is reflected by the reflecting surface 342 to the lens 40. The light beam 11 can enter the interior of the prism 340 through the light-transmitting surface 341 of the prism 340. After receiving the light beam 11, the prism 340 can change the optical path of the light beam 11 and emit the light beam 11 to the imaging chip 35. It should be noted that the light-transmitting surface 341 and the reflecting surface 342 are disposed opposite to each other, so that the light beam 11 outside the prism 340 can enter the prism 340 unidirectionally through the light-transmitting surface 341, and the light beam 11 inside the prism 340 cannot exit the prism 340 through the reflecting surface 342 and can be reflected by the reflecting surface 342 to the light-emitting surface of the prism 340 for emission. The image light beam 11 emitted by the imaging chip 35 can enter the prism 340 again and be reflected by the reflecting surface 342 of the prism 340 to the lens 40. Thus, the optical path of the light beam 11 can be adjusted by the prism 340 to make the light beam 11 enter the imaging chip 35, and at the same time, the optical path of the image light beam 11 emitted by the imaging chip 35 is adjusted to make the image light beam 11 project onto the lens 40, reducing the complexity of the structure of the projection system 2, thereby reducing the volume of the projection system.

[0047] In summary, the projection system 2 provided by the present application includes: a multi-color integrated light source 10, a focusing module 20, an imaging assembly 30, and a lens 40. The multi-color integrated light source 10 is used to selectively emit at least one of a plurality of color light beams 11; the focusing module 20 is located on the optical path of the light beam 11 for receiving and focusing and emitting the light beam 11; the imaging assembly 30 is used to receive the light beam 11 emitted by the focusing module 20, and the imaging assembly 30 is used to adjust the light beam 11 so that the light beam 11 is emitted as an image light beam 11; the lens 40 is used to receive the light beam 11 emitted by the imaging assembly 30, and the lens 40 is used to emit the image light beam 11 to the projection plane. Through the above-described embodiments, at least one of a plurality of color light beams 11 can be selectively emitted by the multi-color integrated light source 10, and color or black-and-white imaging can be performed on the projection plane through the focusing module 20, the imaging assembly 30, and the lens 40. Thus, there is no need to additionally provide a plurality of independent light sources, making the structure of the projection system 2 more concise, greatly reducing the volume required by the projection system 2, and saving costs. Compared with other projection systems, the projection system 2 provided by the present application has a simpler structure, a smaller volume, and lower costs.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered within the scope of the claims and the specification of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A projection system, characterized in that: The projection system comprises: A multi-color integrated light source, used to selectively emit at least one of the light beams of multiple colors; A focusing module, located on the optical path of the light beam, for receiving and focusing the light beam for emission; An imaging component, used for receiving the light beam emitted by the focusing module, and the imaging component is used for adjusting the light beam so that the light beam is emitted as an image beam; The lens is used to receive the light beam emitted by the imaging component, and the lens is used to emit the image light beam to a projection plane.

2. The projection system according to claim 1, characterized in that: The multi-color integrated light source comprises a substrate and a plurality of point light sources, wherein the plurality of point light sources are arranged on the substrate, wherein at least two of the point light sources have different colors.

3. The projection system according to claim 2, characterized in that: A plurality of point light source arrays are arranged on the substrate.

4. The projection system according to claim 3, characterized in that: The plurality of point light sources include at least two of a red point light source, a green point light source, a blue point light source, and a white point light source.

5. The projection system according to claim 4, characterized in that: The imaging component includes a film, the film is located in the focusing area of ​​the focusing module, and a shielding pattern is formed on the film. The shielding pattern is used to shield part of the light beam so that the remaining light beam is emitted as an image light beam.

6. The projection system according to claim 1, characterized in that: The imaging component comprises a collimating module, and the collimating module is located in the focusing area of ​​the focusing module to receive the light beam and emit the light beam in parallel.

7. The projection system according to claim 6, characterized in that: The imaging assembly further includes a fly-eye lens, which is located downstream of the collimating module on the optical path.

8. The projection system according to claim 7, characterized in that: The imaging component also includes an adjustment module and an imaging chip. The adjustment module is located downstream of the fly-eye lens on the optical path and is used to receive the light beam and emit the light beam to the imaging chip so that the imaging chip emits an image light beam.

9. The projection system according to claim 8, characterized in that: The adjustment module includes a prism, which has a light-transmitting surface facing the fly-eye lens and a reflective surface arranged opposite to the light-transmitting surface. The light beam enters the prism through the light-transmitting surface and is emitted to the imaging chip. The imaging chip emits an image light beam to the reflective surface and is reflected to the lens through the reflective surface.

10. A vehicle projection device, characterized in that: The vehicle projection device comprises the projection system according to any one of claims 1-9.

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