Optical assembly and head-up display system

Abstract

This application relates to the field of optical technology and discloses an optical component. A beam splitter assembly intersects with a first optical path. The beam splitter assembly includes a first beam splitter and a second beam splitter. The first beam splitter intersects with a first beam to transmit a first split beam from the first beam. The second beam splitter intersects with a second beam to transmit a second split beam from the second beam. An optical modulator intersects with the first and second beam splitters to modulate their phase. Lens assemblies are respectively disposed on a second and a third optical path to amplify and rotate the first split beam before projecting it onto a first region to form a first pattern. Lens assemblies amplify and rotate the second split beam before projecting it onto a second region to form a second pattern. The horizontal resolution of the first and second patterns is greater than their vertical resolution. The first and second patterns combine to form an elongated image. This provides an optical component and a head-up display system for improving horizontal resolution and image size.

Description

Technical Field

[0001] This application relates to the field of optical technology, and in particular to optical components and head-up display systems. Background Technology

[0002] In the current field of automotive head-up displays, LCD screens are widely used to display information. This solution uses the reflection of the windshield to provide drivers with key driving information, such as vehicle speed and navigation instructions.

[0003] As the level of intelligence in automobiles continues to increase, drivers are demanding greater richness and clarity of information displayed on head-up displays. Traditional LCD screen solutions are struggling to meet the demands for high resolution and large image size, making it difficult to satisfy the growing need for driver information display. Summary of the Invention

[0004] This application primarily addresses the technical problems of insufficient resolution and image size in existing head-up display technologies. It provides an optical component and head-up display system for improving horizontal resolution and image size.

[0005] To address the aforementioned technical problems, this application provides an optical component, wherein the optical component includes,

[0006] A light source is provided, wherein a first light beam and a second light beam are formed and projected along a first direction to form a first optical path projected along the first direction, wherein the lateral resolution of the first light beam and the second light beam is less than the longitudinal resolution, and the first light beam and the second light beam contain at least a first polarized light.

[0007] A beam splitter assembly is located at one end of the light source along the first direction. The beam splitter assembly intersects with the first optical path. The beam splitter assembly includes a first beam splitter and a second beam splitter. A first angle is formed between the first beam splitter and the second beam splitter. The first beam splitter intersects with the first beam to transmit a first beam splitter in the first beam, which is composed of first polarized light. The second beam splitter intersects with the second beam to transmit a second beam splitter in the second beam, which is composed of first polarized light.

[0008] An optical modulator is located at one end of the beam splitter assembly along the first direction and away from the light source. The optical modulator intersects with the first beam splitter and the second beam splitter to form phase modulation on the first beam splitter and the second beam splitter. The first beam splitter forms a second optical path projected along the second direction, and the second beam splitter forms a third optical path projected along the second direction.

[0009] The lens assembly includes two lenses, which are respectively disposed on the second optical path and the third optical path, so as to amplify and rotate the first beam and project it onto the first area to form a first pattern, and to amplify and rotate the second beam and project it onto the second area to form a second pattern. The horizontal resolution of the first pattern and the second pattern is greater than the vertical resolution. The first pattern and the second pattern are combined to form an elongated image.

[0010] In one embodiment, a second angle is formed between the first beam splitter and the light modulator, and a third angle is formed between the second beam splitter and the light modulator, wherein the second angle and the third angle are equal.

[0011] In one possible implementation, the first included angle is 90°, and the second included angle and the third included angle are 45°.

[0012] In one embodiment, the optical modulator is composed of an LCoS and is horizontally arranged along the second direction. The optical modulator performs phase modulation on the first beam splitter and the second beam splitter, and forms the first beam splitter and the second beam splitter composed of second polarized light. The optical modulator reflects the first beam splitter to the first beam splitter and reflects the second beam splitter to the second beam splitter. The first beam splitter reflects the first beam splitter and forms the second optical path projected along the second direction. The second beam splitter reflects the second beam splitter and forms the third optical path projected along the second direction.

[0013] In one possible implementation, the lens assembly includes,

[0014] A magnifying glass component is disposed on the second optical path and the third optical path to perform focusing and magnification processing on the first beam splitter and the second beam splitter;

[0015] A reflector component is disposed on the second optical path and the third optical path, and is located after the magnifying lens component, so as to perform rotation processing on the first beam splitter and the second beam splitter to increase the lateral resolution of the first pattern and the second pattern.

[0016] In one possible implementation, the lens assembly further includes,

[0017] A light-diffusing plate is provided. The first beam splitter is reflected by the mirror component to form a fourth light path, and the second beam splitter is reflected by the mirror component to form a fifth light path. The light-diffusing plate is provided on both the fourth and fifth light paths. The first surface of the light-diffusing plate is used to receive and reflect light. The first surface is densely covered with scattering particles. The light-diffusing plate and the mirror component in the same lens assembly form a fourth angle.

[0018] In one possible implementation, the fourth included angle is 45°.

[0019] In one embodiment, the first pattern and the second pattern are spaced apart in the lateral direction.

[0020] In one embodiment, the first pattern and the second pattern are connected in the lateral direction.

[0021] Another aspect of this application provides a head-up display system, which includes the optical components described in Embodiment 1. The light-diffusing plate is located at the bottom of the windshield and scatters the first beam to form a first pattern in front of the windshield and scatters the second beam to form a second pattern in front of the windshield. A fifth angle is formed between the light-diffusing plate and the windshield.

[0022] Compared to existing technologies, the optical components and head-up display system of this application divide the original optical path into a first optical path and a second optical path. The first and second optical paths have lateral and vertical resolutions, with the lateral resolution being greater than the vertical resolution. A first beam splitter is disposed on the first optical path, and a second beam splitter is disposed on the second optical path. The first beam splitter transmits the first beam splitter in the first beam, and the second beam splitter transmits the second beam splitter in the second beam. Both the first and second beam splitters are composed of first polarized light. An optical modulator modulates the first and second beam splitters. The first beam splitter forms a second optical path projected along a second direction, and the second beam splitter forms a third optical path projected along the second direction. The lens assembly magnifies and rotates the first beam splitter and projects it onto a first region to form a first pattern. The lateral resolution of the first pattern is equal to the vertical resolution of the first beam. The lens assembly magnifies and rotates the second beam splitter and projects it onto a second region to form a second pattern. The lateral resolution of the second pattern is equal to the vertical resolution of the second beam. The first and second patterns combine to form a long strip image. The horizontal resolution of the long strip image doubles with the further combination of the first and second patterns, and the long strip image can also display more information. Attached Figure Description

[0023] Appendix Figure 1 This is a schematic diagram of the structure of an optical component of this application;

[0024] Appendix Figure 2 This is a schematic diagram of a structure between the beam splitter assembly and the optical modulator in this application;

[0025] Appendix Figure 3 This is a schematic diagram of one structure of the beam splitter assembly of this application;

[0026] Appendix Figure 4This is a schematic diagram of the first change between the first beam and the second beam in this application;

[0027] Appendix Figure 5 This is a schematic diagram of the second change between the first beam and the second beam in this application;

[0028] Appendix Figure 6 This is a schematic diagram of the third change between the first beam and the second beam in this application.

[0029] Explanation of the labels in the diagram:

[0030] X, first direction; Y, second direction; Z, third direction;

[0031] a. First included angle; b. Second included angle; c. Third included angle; d. Fourth included angle;

[0032] 10. Optical components;

[0033] 100. Light source components;

[0034] 200. Beam splitter assembly; 210. First beam splitter; 220. Second beam splitter;

[0035] 300. Optical modulation element;

[0036] 400. Lens assembly; 410. Magnifying glass component; 420. Reflecting mirror component; 430. Light-diffusing plate;

[0037] 20. Beam; 21. First beam; 22. Second beam;

[0038] 30. Optical path; 31. First optical path; 32. Second optical path; 33. Third optical path; 34. Fourth optical path; 35. Fifth optical path. Detailed Implementation

[0039] To make the objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] The existing head-up display technology has technical problems with insufficient resolution and image size.

[0041] Therefore, this application provides an optical component, wherein the optical component includes,

[0042] A light source is provided, wherein a first light beam and a second light beam are formed and projected along a first direction to form a first optical path projected along the first direction, wherein the lateral resolution of the first light beam and the second light beam is less than the longitudinal resolution, and the first light beam and the second light beam contain at least a first polarized light.

[0043] A beam splitter assembly is located at one end of the light source along the first direction. The beam splitter assembly intersects with the first optical path. The beam splitter assembly includes a first beam splitter and a second beam splitter. A first angle is formed between the first beam splitter and the second beam splitter. The first beam splitter intersects with the first beam to transmit a first beam splitter in the first beam, which is composed of first polarized light. The second beam splitter intersects with the second beam to transmit a second beam splitter in the second beam, which is composed of first polarized light.

[0044] An optical modulator is located at one end of the beam splitter assembly along the first direction and away from the light source. The optical modulator intersects with the first beam splitter and the second beam splitter to form phase modulation on the first beam splitter and the second beam splitter. The first beam splitter forms a second optical path projected along the second direction, and the second beam splitter forms a third optical path projected along the second direction.

[0045] The lens assembly comprises two lenses, which are respectively disposed on the second optical path and the third optical path, to amplify and rotate the first beam and project it onto the first region to form a first pattern, and to amplify and rotate the second beam and project it onto the second region to form a second pattern. The horizontal resolution of the first pattern and the second pattern is greater than the vertical resolution. The first pattern and the second pattern are combined to form an elongated image.

[0046] Another aspect of this application provides a head-up display system, which includes the optical components described in Embodiment 1. The light-diffusing plate is located at the bottom of the windshield and scatters the first beam to form a first pattern in front of the windshield and scatters the second beam to form a second pattern in front of the windshield. A fifth angle is formed between the light-diffusing plate and the windshield.

[0047] Example 1:

[0048] The current widely used LCD screen solution in the automotive head-up display field generates the original driving image through a high-brightness custom LCD screen, relies on a high-brightness LED backlight for supplemental lighting, and then transmits and adjusts the light through optical systems such as freeform surface mirrors or lens groups. After being reflected by a special windshield, it forms a virtual image 2-10 meters in front of the driver, thus displaying key information such as vehicle speed and navigation. However, this solution is based on the passive imaging principle of backlight transmission, which has inherent shortcomings in pixel physical structure, brightness and power consumption, optical adaptation, and high-temperature stability. When facing the demand for high horizontal resolution, small-sized screens are difficult to use. Stacking enough pixels results in limited pixel density, low yield, and high cost. When facing the demand for large-format displays, the brightness needs to be greatly increased, leading to a surge in power consumption. Contrast is prone to collapse under strong light, and a large field of view will exacerbate image distortion and ghosting. This forces the optical housing to become uncontrollable and causes the LCD screen to work under high load, resulting in reliability issues such as image retention and ghosting. The cost of supporting high-precision optical components and customized windshields also increases sharply. Therefore, it is inadequate for the demand for high horizontal resolution and large-format displays, and it is difficult to meet the growing demand of drivers for richer and clearer display information in the context of intelligent vehicles.

[0049] Please refer to the attached document. Figure 1 To be continued Figure 6 As shown, in this embodiment, the first direction X refers to the height direction of the optical component 10, that is, the direction from top to bottom or from bottom to top. In this embodiment, the light source 100 is positioned higher than the beam splitter assembly 200, and the beam splitter assembly 200 is positioned lower than the light source 100. The second direction Y refers to the length direction of the optical component 10, that is, the direction from left to right or from right to left. In this embodiment, the first beam splitter 210 is positioned to the left of the second beam splitter 220, and the second beam splitter 220 is positioned to the right of the first beam splitter 210. The third direction Z refers to the width direction of the optical component 10, that is, the direction from front to back or from back to front. In this embodiment, the reflector component 420 is positioned forward of the light-diffusing plate 430, and the light-diffusing plate 430 is positioned backward of the reflector component 420.

[0050] Furthermore, in this embodiment, the path that the light travels is called the optical path 30. The optical path 30 is divided into the first optical path 31, the second optical path 32, the third optical path 33, the fourth optical path 34 and the fifth optical path 35 according to the different directions of operation. The first optical path 31 to the fifth optical path 35 will be further introduced later.

[0051] Appendix Figure 1 This is a schematic diagram of one structure of the optical component 10 in this embodiment. Please refer to the attached diagram. Figure 1As shown, the optical component 10 of this embodiment includes a light source 100, which is used to emit a light beam 20. The light beam 20 emitted by the light source 100 in this embodiment is divided into a first beam 21 and a second beam 22. The first beam 21 and the second beam 22 are arranged relatively independently. The first beam 21 and the second beam 22 are projected along a first direction X, forming a first optical path 31 projected along the first direction X. Please refer to the appendix. Figure 4 As shown, with a fixed pixel density, the physical size of the beam 20 determines the resolution. The lengths of the first beam 21 and the second beam 22 in the second direction Y are less than their lengths in the third direction Z. Therefore, the lateral resolution of the first beam 21 is less than its longitudinal resolution.

[0052] The first beam 21 and the second beam 22 both include at least a first polarized light. Further, in this embodiment, the first beam 21 and the second beam 22 include a first polarized light and a second polarized light, wherein the first polarized light is one of S-polarized light and P-polarized light, and the second polarized light is the other of S-polarized light and P-polarized light.

[0053] In one embodiment, the light source 100 can be a semiconductor light-emitting element, such as a laser or a light-emitting diode (LED).

[0054] Please refer to the attached document. Figure 1 As shown, the optical component 10 in this embodiment further includes a beam splitter assembly 200. The beam splitter assembly 200 is located at one end of the light source 100 along the first direction X. The beam splitter assembly 200 intersects with the first optical path 31. The first beam 21 and the second beam 22, after being formed by the light source 100, first pass through the beam splitter assembly 200. The beam splitter assembly 200 includes a first beam splitter 210 and a second beam splitter 220. The splitting of the first beam splitter 210 and the second beam splitter 220 is to further accommodate the splitting of the first beam 21 and the second beam 22. The first beam splitter 210 intersects with the first beam 21 to transmit the first beam split in the first beam 21, which is composed of first polarized light. The second beam splitter 220 intersects with the second beam 22 to transmit the second beam split in the second beam 22, which is composed of first polarized light. If both the first beam 21 and the second beam 22 contain both first polarized light and second polarized light, the first beam 21 transmits the first polarized light and reflects the second polarized light after passing through the first beam splitter 210, while the second beam 22 transmits the first polarized light and reflects the second polarized light after passing through the second beam splitter 220. Further details are provided in the appendix. Figure 2As shown, a first angle α is formed between the first beam splitter 210 and the second beam splitter 220. The formation of the first angle α indicates that the first beam splitter 210 and the second beam splitter 220 are not set parallel to each other. The extension line of the first beam splitter 210 intersects the extension line of the second beam splitter 220, or the first beam splitter 210 and the second beam splitter 220 intersect directly. This ensures that the first beam splitter continues to run in opposite directions after passing through the first beam splitter 210 and the second beam splitter continues to run in opposite directions after passing through the second beam splitter 220, in preparation for the subsequent combination of the first and second patterns.

[0055] Furthermore, the first beam splitting refers to the portion of light that has been filtered by the first beam splitter 210, and the second beam splitting refers to the portion of light that has been filtered by the second beam splitter 220.

[0056] In one embodiment, the first beam splitter 210 and the second beam splitter 220 are polarizing beam splitters, through which P-polarized light can be transmitted and S-polarized light can be reflected.

[0057] In one embodiment, the first beam splitter 210 and the second beam splitter 220 are polarizing beam splitters, through which S-polarized light can be transmitted and P-polarized light can be reflected.

[0058] In one embodiment, the first included angle α is 90°.

[0059] Please refer to the attached document. Figure 1 As shown, the optical component 10 of this embodiment further includes a light modulator 300. The light modulator 300 is located at the end of the beam splitter assembly 200 along the first direction X and away from the light source 100. That is, the light source 100, the beam splitter assembly 200, and the light modulator 300 are arranged sequentially along the first direction X. The first beam 21 and the second beam 22 pass sequentially through the light source 100, the beam splitter assembly 200, and the light modulator 300. The light modulator 300 intersects with the first beam splitter and the second beam splitter to form phase modulation on the first beam splitter and the second beam splitter. The first beam splitter forms a second optical path 32 projected along the second direction Y, and the second beam splitter forms a third optical path 33 projected along the second direction Y. Furthermore, the second optical path 32 and the third optical path 33 run at their respective ends along the second direction Y to further prepare for the formation of a combination of the first pattern and the second pattern.

[0060] In one embodiment, the optical modulator 300 is composed of an LCoS and is horizontally arranged along the second direction Y. The optical modulator 300 performs phase modulation on the first beam splitter and the second beam splitter, and forms the first beam splitter and the second beam splitter composed of second polarized light. The optical modulator 300 reflects the first beam splitter to the first beam splitter 210 and reflects the second beam splitter to the second beam splitter 220. The first beam splitter 210 has a reflective effect on the first beam splitter composed of second polarized light, so as to form a reflection of the first beam splitter and form a second optical path 32 projected along the second direction Y. The second beam splitter 220 has a reflective effect on the second beam splitter composed of second polarized light, so as to form a reflection of the second beam splitter and form a third optical path 33 projected along the second direction Y. The second optical path 32 and the third optical path 33 run in opposite directions.

[0061] In one embodiment, the light modulator 300 can be a transmissive spatial light modulator, such as a liquid crystal display (LCD) component; or a reflective spatial light modulator, such as a liquid crystal on silicon (LCoS) component, a digital micromirror display (DMD) component, a micro-electro-mechanical system (MEMS) component, etc.

[0062] In one embodiment, please refer to the appendix. Figure 2 As shown, a second angle b is formed between the first beam splitter 210 and the light modulator 300, and a third angle c is formed between the second beam splitter 220 and the light modulator 300. The second angle b and the third angle c are equal.

[0063] Furthermore, the second included angle b and the third included angle c are 45 degrees.

[0064] Please refer to the attached document. Figure 1As shown, the optical component 10 of this embodiment also includes two lens components 400, which are respectively disposed on the second optical path 32 and the third optical path 33. The lens component 400 disposed on the second optical path 32 amplifies and rotates the first beam and projects it onto the first region to form a first pattern. The lens component 400 disposed on the third optical path 33 amplifies and rotates the second beam and projects it onto the second region to form a second pattern. Further, after rotation, the lateral resolution of the first pattern is equal to the longitudinal resolution of the original first beam 21, and the longitudinal resolution of the first pattern is equal to the longitudinal resolution of the original first beam 21. Since the lateral resolution of the first beam 21 is less than its longitudinal resolution, it can be concluded that the lateral resolution of the first pattern is greater than its longitudinal resolution. Similarly, it can be concluded that the lateral resolution of the second pattern is greater than its longitudinal resolution. Furthermore, under the amplification and rotation of the optical component 10 in this embodiment, the lateral area of ​​the first and second beams is further expanded, forming the first and second patterns. When the first and second patterns are combined, they form a long, narrow image, doubling both its horizontal resolution and width to display more information more clearly. The increased width does not obstruct the driver's view.

[0065] Furthermore, the elongated image, composed of the first and second patterns, is located between the left and right pillars A and B.

[0066] In one embodiment, the first pattern and the second pattern are spaced apart in the lateral direction.

[0067] In one embodiment, the first pattern and the second pattern are connected in the lateral direction.

[0068] Please refer to the attached document. Figure 1 As shown, the lens assembly 400 of this embodiment includes a magnifying lens component 410, which is disposed on the second optical path 32 and the third optical path 33 to perform focusing and magnification processing of the first beam splitting and the second beam splitting. After passing through the magnifying lens component 410, the patterns of the first beam splitting and the second beam splitting are rotated compared to the first beam 21 and the second beam 22 emitted by the light source 100.

[0069] The lens assembly 400 in this embodiment also includes a reflector component 420. The reflector component 420 is disposed on the second optical path 32 and the third optical path 33, and is located after the magnifying lens component 410. That is, the first beam splitter and the second beam splitter pass through the magnifying lens component 410 and the reflector component 420 in sequence, so as to rotate the first beam splitter and the second beam splitter and present the original vertical resolution of the first beam 21 and the second beam 22 through the horizontal resolution after rotation, so as to increase the horizontal resolution of the first pattern and the second pattern.

[0070] Appendix Figure 4This is a schematic diagram illustrating the first change between the first beam 21 and the second beam 22 in this embodiment. Figure 5 This is a schematic diagram illustrating the second variation between the first beam 21 and the second beam 22 in this embodiment. Figure 6 This is a schematic diagram illustrating the third change between the first beam 21 and the second beam 22 in this embodiment. Please refer to the attached diagram. Figure 4 As shown, beam 20 is in the stage after projection from light source 100. In this stage, beam 20 is divided into a first beam 21 and a second beam 22. The first beam 21 and the second beam 22 are arranged along the second direction Y and the third direction Z, and are projected along the first direction X. In this state, the second direction Y of the first beam 21 and the second beam 22 is its lateral direction, that is, the layout direction of the lateral resolution. In this state, the third direction Z of the first beam 21 and the second beam 22 is its longitudinal direction, that is, the layout direction of the longitudinal resolution. Please refer to the appendix. Figure 5 The diagram shows a rotational relationship between the first beam 21 and the second beam 22. The relative rotation of the first beam 21 and the second beam 22 can create the following configuration: Figure 6 In the final state shown, the relative rotation between the first beam 21 and the second beam 22 is a three-dimensional rotation. Please refer to the appendix. Figure 6 As shown, this is the relative state of the first beam 21 and the second beam 22 after rotation. The first beam 21 and the second beam 22 are arranged along the first direction X and the second direction Y, and projected along the third direction Z. In this state, the second direction Y of the first beam 21 and the second beam 22 is its transverse direction, i.e., attached... Figure 1 The longitudinal direction of the first beam 21 and the second beam 22 is such that, in this state, the first direction X of the first beam 21 and the second beam 22 is its longitudinal direction, i.e., attached... Figure 1 The horizontal direction of the first beam 21 and the second beam 22. As can be seen from the above figures, after rotation and splicing, the horizontal width of the elongated image formed by the first pattern and the second pattern increases significantly, and its horizontal resolution also increases simultaneously.

[0071] Please refer to the attached document. Figure 1 As shown, the lens assembly 400 of this embodiment also includes a light-diffusing plate 430. The first beam splitter, after reflection by the mirror component 420, forms a fourth light path 34, and the second beam splitter, after reflection by the mirror component 420, forms a fifth light path 35. Both the fourth light path 34 and the fifth light path 35 are equipped with light-diffusing plates 430. The first surface of the light-diffusing plate 430 is used to receive and reflect light. The first surface is densely covered with scattering particles to transform the uneven incident light into uniform and soft outgoing light, while simultaneously adjusting the direction of the light as needed. Please refer to the appendix. Figure 3 As shown, the light-diffusing plate 430 and the mirror component 420 in the same lens assembly 400 form a fourth included angle d.

[0072] In one embodiment, the fourth included angle d is 45°, and the size of the fourth included angle d is determined according to the direction that the light needs to be adjusted.

[0073] The optical component 10 in this embodiment can be applied to various scenarios, such as projection scenarios and lighting scenarios.

[0074] Example 2

[0075] This embodiment further explains the application of the optical components in Embodiment 1 in a projection scenario. The head-up display system of this embodiment includes the optical components of Embodiment 1, and the optical components will not be described in detail here. In the head-up display of this embodiment, the light-diffusing plate is located at the bottom of the windshield, and it scatters the first beam to form a first pattern in front of the windshield, and scatters the second beam to form a second pattern in front of the windshield. A fifth angle is formed between the light-diffusing plate and the windshield.

[0076] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0077] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0078] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An optical component, characterized in that, The optical components include, A light source is provided, wherein a first light beam and a second light beam are formed and projected along a first direction to form a first optical path projected along the first direction, wherein the lateral resolution of the first light beam and the second light beam is less than the longitudinal resolution, and the first light beam and the second light beam contain at least a first polarized light. A beam splitter assembly is located at one end of the light source along the first direction. The beam splitter assembly intersects with the first optical path. The beam splitter assembly includes a first beam splitter and a second beam splitter. A first angle is formed between the first beam splitter and the second beam splitter. The first beam splitter intersects with the first beam to transmit a first beam splitter in the first beam, which is composed of first polarized light. The second beam splitter intersects with the second beam to transmit a second beam splitter in the second beam, which is composed of first polarized light. An optical modulator is located at one end of the beam splitter assembly along the first direction and away from the light source. The optical modulator intersects with the first beam splitter and the second beam splitter to form phase modulation on the first beam splitter and the second beam splitter. The first beam splitter forms a second optical path projected along the second direction, and the second beam splitter forms a third optical path projected along the second direction. The lens assembly includes two lenses, which are respectively disposed on the second optical path and the third optical path, so as to amplify and rotate the first beam and project it onto the first area to form a first pattern, and to amplify and rotate the second beam and project it onto the second area to form a second pattern. The horizontal resolution of the first pattern and the second pattern is greater than the vertical resolution. The first pattern and the second pattern are combined to form an elongated image. The optical modulator is composed of an LCoS and is horizontally arranged along the second direction. The optical modulator performs phase modulation on the first beam splitter and the second beam splitter, and forms the first beam splitter and the second beam splitter composed of second polarized light. The optical modulator reflects the first beam splitter to the first beam splitter and reflects the second beam splitter to the second beam splitter. The first beam splitter reflects the first beam splitter and forms the second optical path projected along the second direction. The second beam splitter reflects the second beam splitter and forms the third optical path projected along the second direction. The lens assembly includes, A magnifying glass component is disposed on the second optical path and the third optical path to perform focusing and magnification processing on the first beam splitter and the second beam splitter; A reflector component is disposed on the second optical path and the third optical path, and is located after the magnifying lens component, so as to perform rotation processing on the first beam splitter and the second beam splitter to increase the lateral resolution of the first pattern and the second pattern.

2. The optical component according to claim 1, characterized in that, The first beam splitter and the light modulator form a second angle, and the second beam splitter and the light modulator form a third angle, the second angle and the third angle being equal.

3. The optical component according to claim 2, characterized in that, The first included angle is 90°, and the second included angle and the third included angle are 45°.

4. The optical component according to claim 1, characterized in that, The lens assembly also includes, A light-diffusing plate is provided. The first beam splitter is reflected by the mirror component to form a fourth light path, and the second beam splitter is reflected by the mirror component to form a fifth light path. The light-diffusing plate is provided on both the fourth and fifth light paths. The first surface of the light-diffusing plate is used to receive and reflect light. The first surface is densely covered with scattering particles. The light-diffusing plate and the mirror component in the same lens assembly form a fourth angle.

5. The optical component according to claim 4, characterized in that, The fourth included angle is 45°.

6. The optical component according to claim 4, characterized in that, The first pattern and the second pattern are spaced apart in the horizontal direction.

7. The optical component according to claim 4, characterized in that, The first pattern and the second pattern are connected in the horizontal direction.

8. A head-up display system, characterized in that, The optical component includes any one of claims 4 to 7, wherein the light-diffusing plate is located at the bottom of the windshield and scatters the first beam to form a first pattern in front of the windshield, and scatters the second beam to form a second pattern in front of the windshield, wherein a fifth angle is formed between the light-diffusing plate and the windshield.

Images