Light uniformizing rod, digital light processing system, lamp set and vehicle

Abstract

The utility model discloses a dodging rod, a digital light processing system, a lamp bank and a vehicle, which are used for improving the utilization rate of luminous flux. The system part comprises a light uniformizing rod, a first light guide assembly, a prism, a digital micromirror element, a second light guide assembly and a projection objective lens, wherein the light uniformizing rod comprises a first light inlet end and a second light inlet end; light of the light source enters the dodging rod through the first light inlet end, and light coming out of the light outlet end of the dodging rod is guided by the first light guide assembly to enter the prism. The prism reflects the light introduced by the first light guide assembly to the digital micromirror element; when the digital micromirror element is in a first deflection state, the light reflected by the prism is deflected into light in a first direction, and the light in the first direction is transmitted from the prism to the projection objective lens; and in the second deflection state, the light rays reflected by the prism are collected and emitted in the second direction, and the light rays are guided by the second light guide assembly to enter the second light inlet end of the light uniformizing rod.

Description

TECHNICAL FIELD

[0001] The utility model relates to digital projection illumination field especially, and it relates to a light bar, digital light processing system, lamp group and vehicle. BACKGROUND

[0002] DLP (Digital Light Processing, full name is Digital Light Processing) is a branch of digital projection technology, and the technology needs to carry image signal through digital processing, and the core device of DLP is DMD (Digital Micro-mirror device, full name is Digital Micro-mirror device), and there are thousands of micro-mirror pieces in DMD, and when light beam irradiates on micro-mirror array, reflection will occur, and small light source corresponding to the number of micro-mirror is produced, so that each micro-mirror is as a pixel, and each mirror corresponds to a pixel in image, and the working principle of DMD is to realize the reflection or absorption of light by controlling the on-off state of micro-mirror on it, and the micro-mirror in the on state corresponds to bright pixel, and the micro-mirror in the off state corresponds to dark pixel.

[0003] DLP technology is used in vehicle illumination field, and the light flux utilization rate is higher than the light utilization efficiency requirement of DLP applied to other fields, and the current concern in this field is the demand that DLP system can realize high-brightness large-view-angle lighting, and this requirement challenges the light flux of system. INVENTION CONTENT

[0004] The utility model embodiment provides a kind of light bar, digital light processing system, lamp group and vehicle to improve the light flux utilization rate of light system.

[0005] The utility model provides a kind of light bar in the first aspect, and the light bar includes light outlet portion, one end of the light outlet portion forms light outlet end, the other end of the light outlet portion extends with the first light inlet portion and the second light inlet portion in the form of included angle, wherein, one end of the first light inlet portion forms the first light inlet end, and one end of the second light inlet portion forms the second light inlet end.

[0006] Further, the material of the light bar includes reflective metal material, or the material of the light bar includes plastic material with internal light refractive index greater than air.

[0007] Further:

[0008] The first light inlet portion includes first part and second part, one end of the first part forms the first light inlet end, and the other end is connected with one end of the second part;

[0009] The second light inlet portion includes third part and fourth part, one end of the third part forms the second light inlet end, and the other end is connected with one end of the fourth part.

[0010] The other end of the second part and one end of the fourth part form an included angle.

[0011] Further, the first part and the third part are parallel to each other.

[0012] In the second aspect, the utility model provides a kind of digital light processing system, including the light bar of any one of the preceding description, first light guide component, prism, digital micro-mirror element, second light guide component and projection objective lens;

[0013] The light of light source enters the light bar through the first light inlet, and the light of the light bar is emitted from the light outlet and enters the prism after the first light guide component;

[0014] The prism reflects the light introduced by the first light guide component to the digital micro-mirror element.

[0015] The digital micro-mirror element deflects the light reflected by the prism to the first direction light when in the first deflection state, and the first direction light is transmitted from the prism to the projection objective lens;When in the second deflection state, the light reflected by the prism is collected and emitted as second direction light, and enters the second light inlet of the light bar after the second light guide component.

[0016] Further, the light source includes one or more sets, part of the light of the light source enters the light bar through the first light inlet, and another part of the light of the light source enters the light bar through the second light inlet.

[0017] Further, the plurality of sets of light sources include a first light source and a second light source.

[0018] The light of the first light source enters the first light inlet after being condensed by the first condenser lens.

[0019] The light of the second light source enters the second light inlet after entering the second condenser lens.

[0020] Further, the first light guide component includes a third condenser lens, a first reflector and a fourth condenser lens.

[0021] The light emitted from the light outlet of the light bar is reflected to the fourth condenser lens by the first reflector after being condensed by the third condenser lens, and the fourth condenser lens condenses the light reflected by the first reflector to the incident surface of the prism.

[0022] Further, the second light guide component includes a free-form surface, a second reflector and a fifth condenser lens.

[0023] The second direction light is collected by the free-form surface and guided to the second reflector, reflected by the second reflector to the fifth converging lens, and the fifth converging lens converges the reflected light of the second reflector to the second light entrance end of the light uniformization rod.

[0024] Further, the second light guide assembly comprises a free-form surface, a beam splitter and a fifth converging lens.

[0025] The second direction light is collected by the free-form surface and guided to the second reflector, reflected by the second reflector to the fifth converging lens, and the fifth converging lens converges the reflected light of the second reflector to the second light entrance end of the light uniformization rod.

[0026] Further, the digital light processing system further comprises a detection module and a control module.

[0027] The other part of the beam splitter light reaches the detection module, and the detection module converts the other part of the beam splitter light into an electrical signal and outputs the electrical signal to the control module, so that the control module outputs a light source adjusting signal to the light source based on the electrical signal.

[0028] Further, the first light entrance end and the second light entrance end of the light uniformization rod are parallel, and the light entering from the first light entrance end and the second light entrance end converges and then exits from the light exit end of the light uniformization rod.

[0029] The third aspect of the utility model provides a lamp group comprising the digital light processing system and the light source.

[0030] The fourth aspect of the utility model provides a vehicle comprising the lamp group.

[0031] The digital light processing system of one of the schemes of the digital light processing system, the lamp set and the vehicle provided by the embodiment of the utility model, the light rod of the digital light processing system includes the first light inlet end and the second light inlet end, the light of the light source enters the light rod through the first light inlet end, the light of the light rod exits through the first light guide component and enters the prism; the prism, the light introduced by the first light guide component is reflected to the digital micromirror element; the digital micromirror element, when being in the first deflection state, deflects the light reflected by the prism to the first direction light, the first direction light is transmitted from the prism to the projection objective; when being in the second deflection state, the light reflected by the prism is collected and emitted as the second direction light, and the second direction light is guided into the second light inlet end of the light rod through the second light guide component. Finally, the light energy absorbed by the digital micromirror element when being in the second deflection state is reused to return to the light rod, the light of the two states of the digital micromirror element can be utilized, and the luminous flux utilization rate of the digital light processing system is effectively improved. In addition, it is worth mentioning that the DLP technology is used in the vehicle lighting field to realize the demand of higher brightness, and this demand challenges the system luminous flux, the luminous flux of the system can be effectively improved through the scheme provided by the embodiment of the utility model, which is different from the scheme of adopting multiple lens sets in the current market, the scheme can simplify the system design difficulty and save the system cost. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the drawings needed to be used in the description of the embodiment of the utility model will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0033] Figure 1 It is a schematic diagram of a digital light processing system in an embodiment of the utility model;

[0034] Figure 2 It is a schematic diagram of a Y-shaped light rod in an embodiment of the utility model;

[0035] Figure 3 It is a schematic diagram of a multi-light source digital light processing system in an embodiment of the utility model;

[0036] Figure 4 It is a schematic diagram of an adjustable compensation digital light processing system in an embodiment of the utility model;

[0037] In the drawing, 10-light source; 40-digital micromirror element; 50-free curved surface; 60-projection objective; 70-prism; 90-light rod; 91-light exit part; 92-first light inlet part; 921-first light inlet end; 93-second light inlet part; 931-second light inlet end;

[0038] 11 - first light source; 12 - second light source;

[0039] 21 - first condenser lens; 22 - third condenser lens; 23 - fourth condenser lens; 24 - fifth condenser lens; 25 - second condenser lens;

[0040] 31 - first reflector; 32 - second reflector;

[0041] 81 - beam splitter; 82 - detection module; 83 - control module. DETAILED DESCRIPTION

[0042] In order to make the technical problems, technical schemes and beneficial effects solved by the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and not to limit the utility model.

[0043] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0044] In the description of the utility model, it should be pointed out that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0045] In an embodiment, as shown in Figure 2 A light uniformization rod is provided, the light uniformization rod comprises a light emitting part 91, one end of the light emitting part 91 forms a light emitting end 911, the other end of the light emitting part 91 extends out a first light entering part 92 and a second light entering part 93 in the form of an included angle, wherein one end of the first light entering part 92 forms a first light entering end 921, and one end of the second light entering part 93 forms a second light entering end 931. The light uniformization rod as a whole presents a "Y" shape or a "Y" shape.

[0046] In an embodiment, the material of the light homogenizing rod comprises a reflective metal material or a plastic material with a refractive index greater than that of air. That is, the light homogenizing rod can be a reflective metal material in which light is reflected, or a plastic material with a refractive index greater than that of air, which uses the principle of total reflection to achieve the transmission of light inside. This is conducive to improving the transmission of light.

[0047] In an embodiment, the first light inlet portion 92 comprises a first part and a second part, one end of the first part forms the first light inlet end, and the other end is connected to one end of the second part; the second light inlet portion 93 comprises a third part and a fourth part, one end of the third part forms the second light inlet end, and the other end is connected to one end of the fourth part; an included angle is formed between the other end of the second part and one end of the fourth part.

[0048] In this embodiment, the first light inlet portion 92 and the second light inlet portion 93 are each divided into two parts, and an included angle is formed between the other end of the second part and one end of the fourth part, which is conducive to converging the light from multiple light sources entering the two light inlet portions.

[0049] In an embodiment, the first part and the third part are parallel to each other, that is, the two light inlet ends of the first light inlet portion 92 and the second light inlet portion 93 are in a parallel state. Of course, in other embodiments, the first part and the third part can also be in a non-parallel state, which is not limited in particular.

[0050] The light homogenizing rod provided by the embodiments of the present application can be applied to the digital light processing system provided by the embodiments of the present application to improve the utilization rate of light sources.

[0051] In an embodiment, the utility model provides a kind of digital light processing system, which comprises light homogenizing rod 90, first light guide component, prism 70, digital micro-mirror element (DMD) 40, second light guide component and projection objective 60. Among them, the light homogenizing rod 90 includes first light inlet end and second light inlet end.

[0052] In this embodiment, the light homogenizing rod 90 includes first light inlet end and second light inlet end, that is, there are two light inlet ends. For example, as shown in Figure 2 In this embodiment, the light homogenizing rod 90 is preferably Y-shaped, so that the light of the light source can be collected through the first light inlet end and then emitted from the light outlet end of the light homogenizing rod 90. As shown in Figure 2 The first light inlet end and the second light inlet end of the light homogenizing rod 90 are in a parallel state. After maintaining parallel for a period of time, the upper parallel line is inclined at a certain angle downward, and the lower parallel line is inclined at a certain angle upward. After the intersection of the two lines, as the light outlet end. That isFigure 2 The light bar can be a reflective metal material, or a plastic material with a refractive index greater than air, which can realize the transmission of light inside by total reflection principle, and is beneficial to improve the efficient transmission of light.

[0053] The light from the light source enters the light bar 90 through the first light inlet end, and the light from the light outlet end of the light bar 90 enters the prism 70 through the first light guide assembly, that is, the light from the light outlet end of the light bar 90 is guided into the prism 70 through the first light guide assembly. The prism 70 reflects the light from the first light guide assembly to the digital micro-mirror device 40.

[0054] It can be seen that the first guide assembly is mainly used to guide the light from the light outlet end of the light bar 90 into the prism 70. In this embodiment, the prism is preferably a TIR (Total Internal Reflection) prism, and the specific type is not limited.

[0055] When the digital micro-mirror device 40 is in the first deflection state, the light reflected by the prism 70 is deflected into the first direction light, which is transmitted from the prism 70 to the projection objective 60; when the digital micro-mirror device 40 is in the second deflection state, the light reflected by the prism 70 is collected and emitted as the second direction light, and enters the second light inlet end of the light bar 90 after passing through the second light guide assembly.

[0056] That is, in this embodiment, the digital micro-mirror device 40 includes a first deflection state and a second deflection state, which correspond to the on state and the off state of the digital micro-mirror device 40, respectively. The digital micro-mirror device 40 in the on state corresponds to a bright pixel, and the digital micro-mirror device 40 in the off state corresponds to a dark pixel. When the digital micro-mirror device 40 is in the on state, the light reflected by the prism 70 to the digital micro-mirror device 40 is deflected into the first direction light, which is finally projected to the projection objective 60; when the digital micro-mirror device 40 is in the off state, the light reflected by the prism 70 to the digital micro-mirror device 40 is collected and emitted as the second direction light, which is guided into the second light inlet end of the light bar 90 through the second light guide assembly, and returns to the light bar 90.

[0057] It can be seen that in the digital light processing system provided in the embodiment of the present application, the light energy absorbed by the digital micro-mirror device in the second deflection state is utilized to return to the light bar 90, and the reflected light is reused, so that the light in the two states of the digital micro-mirror device can be utilized, and the light flux utilization rate of the digital light processing system is effectively improved.

[0058] In an embodiment, the light source includes one or more sets of light rays of the light source enter the light rod 90 through the first light inlet, and another part of the light rays of the light source enter the light rod 90 through the second light inlet.

[0059] In this embodiment, by adding light sources in front of the light rod 90 and by introducing multiple sets of light sources, the luminous flux of the digital light processing system can be effectively enhanced, high brightness performance can be achieved, and higher light efficiency can be achieved. For example, the light source part can simultaneously have a wide spectrum of white light and a narrow-band and higher color purity primary color light, thereby expanding the color gamut.

[0060] In addition, in some of the multiple sets of light sources, the light rays of the light source can be collected through the first light inlet or the second light inlet. This makes the entire DLP system more flexible and efficient.

[0061] In this embodiment, a condenser lens can also be added between the light rod 90 and the light source, so that the light rays of multiple light sources can be more concentrated on the light rod 90, improving the utilization rate of the light source.

[0062] As shown in Figure 1 , as an example of a single light source, a condenser lens 21 can be provided between the light source 10 and the first light inlet of the light rod 90; similarly, if multiple sets of light sources are provided, a condenser lens can be provided between the light source and the second light inlet, which is not limited.

[0063] In an embodiment, taking multiple sets of light sources as an example, the multiple sets of light sources include a first light source 11 and a second light source 12. The light rays of the first light source 11 enter the first condenser lens 21 after being condensed, and then enter the first light inlet. The light rays of the second light source 12 enter the second condenser lens 25 and then enter the second light inlet.

[0064] For example, as shown in Figure 3 or Figure 4 , the light source 10 includes a first light source 11 and a second light source 12. The light rays of the first light source 11 enter the first condenser lens 21, enter the light rod 90 through the first light inlet, and then are emitted from the light outlet. The light of the second light source 12 enters the second condenser lens 25, passes through the second light inlet, and is emitted from the light outlet.

[0065] In the above embodiment, due to the increase of the light source, the first light inlet and the second light inlet of the light rod 90 can collect and condense the emitted light of multiple light sources, further improving the luminous flux of the digital light processing system.

[0066] It is worth emphasizing that in practical applications, since the DLP technology is used in the field of vehicle lighting, attention is paid to the demand for higher brightness, which challenges the system luminous flux. Through the scheme provided by the embodiment of the application, the system luminous flux can be directly and effectively improved by increasing multiple sets of light sources. Unlike the current market scheme of using multiple sets of lens groups, this scheme can also simplify the system design difficulty and save system cost.

[0067] In an embodiment, the light source includes a wide-spectrum light source and / or a narrow-spectrum primary light source, without specific limitation.

[0068] For example, as Figure 3 Or Figure 4 In the examples of the first light source 11 and / or the second light source 12, the light source 10 includes but is not limited to a wide-spectrum light source, a narrow-spectrum primary light source. The wide-spectrum light source includes but is not limited to a mini LED (Light-Emitting Diode, full name: Light-Emitting Diode), an OLED (Organic Light-Emitting Diode, full name: Organic Light-Emitting Diode) or a laser light source, without specific limitation.

[0069] It should be noted that the first condenser lens 21 collects all the light rays of the first light source 11, and the second condenser lens 25 collects all the light rays of the second light source 12 and introduces the light rays into the light homogenizing rod 90. That is, the first condenser lens 21 and the second condenser lens 25 make multiple different types of light sources 10 be introduced into the first light entrance end or the second light entrance end of the light homogenizing rod 90, which makes the luminous flux and light efficiency of the DLP system be improved, and is conducive to realizing high brightness and large viewing angle of the vehicle lamp.

[0070] In an embodiment, as Figure 1 , 3 Or 4, the first light guide assembly includes: the first light guide assembly includes a third condenser lens 22, a first mirror 31 and a fourth condenser lens 23.

[0071] The light rays out of the light exit end of the light homogenizing rod 90 are condensed by the third condenser lens 22, reflected by the first mirror 31 to the fourth condenser lens 23, and the fourth condenser lens 23 condenses the light rays reflected by the first mirror 31 to the incident surface of the prism. The light path goes out of the light exit end of the light homogenizing rod 90, and then enters the third condenser lens 22. The light rays emitted by the third condenser lens 22 are deflected by the first mirror 31 and introduced into the fourth condenser lens 23. The fourth condenser lens 23 collects the light rays, and then the collected light rays are introduced into the prism 70 and reflected to the digital micromirror device 40 by the prism 70.

[0072] It should be noted that the embodiment forms a simple first light guide assembly light path through the interaction of multiple optical elements (mirrors, condenser lenses and prism 70), so that the light is injected into the digital micromirror device 40 after the first light guide assembly, ensuring the implementation of the scheme.

[0073] In an embodiment, as shown in Figure 1 , 3 The second light guide assembly includes a free-form surface 50, a second mirror 32, and a fifth condenser lens 24. The second direction light is collected by the free-form surface 50 and guided to the second mirror 32, reflected by the second mirror 32 to the fifth condenser lens 24, and the fifth condenser lens 24 condenses the reflected light of the second mirror 32 to the second light entrance end of the light rod 90.

[0074] In this embodiment, the light absorbed by the digital micromirror device 40 is reused by the free-form surface 50, the second mirror 32, and the fifth condenser lens 24. The parallel light is reflected by the second mirror 32 to the fifth condenser lens 24, and finally returns to the second light entrance end of the light rod 90, effectively ensuring that the light can be reused.

[0075] In combination with the above embodiment, a single set of light source in Figure 1 is taken as an example to describe the working process of the digital light system provided by the embodiment. The light reflected by the light source 11 enters the first light entrance end of the light rod 90 through the condenser lens 21, and the light out of the light exit end of the light rod 90 enters the first mirror 31 after being condensed by the third condenser lens 22. The light is reflected by the first mirror 31 to the fourth condenser lens 23, which condenses the light reflected by the first mirror 31 to the incident surface of the prism 70. The prism 70 reflects the light to the digital micromirror device 40. The digital micromirror device 40 has two states (on or off). When the on state is entered, the digital micromirror device 40 reflects the reflected light of the prism 70 as first direction light, which is emitted by the projection objective 60. When the off state is entered, the digital micromirror device 40 absorbs the reflected light of the prism 70 and emits second direction light, which is collected by the free-form surface 50, reflected to the second mirror 32, and condensed by the fifth condenser lens 24 to return to the second light entrance end of the light rod 90.

[0076] In an embodiment, as shown in Figure 4 The digital light processing system further includes a detection module 82 and a control module 83, and the second light guide assembly includes a free-form surface 50, a beam splitter 81, and a fifth condenser lens 24.

[0077] In this embodiment, the second directional light is collected by the freeform surface 50 and guided to the beam splitter 81. After being split and processed by the beam splitter 81, a portion of the split light enters the fifth condenser lens 24. The fifth condenser lens 24 focuses a portion of the split light from the beam splitter to the second light-incident end of the uniform light rod 90.

[0078] Another portion of the beam split by the beam splitter 81 reaches the detection module 82. The detection module 82 converts the other portion of the beam split into an electrical signal and outputs it to the control module 83, so that the control module 83 outputs a light source adjustment signal to the light source based on the electrical signal.

[0079] In this embodiment, such as Figure 4 As shown, the second light guiding assembly includes a freeform surface 50, a beam splitter 81, and a fifth condenser lens 24. The second directional light is collected by the freeform surface 50 and guided to the beam splitter 81. After being split and processed by the beam splitter 81, a portion of the split light enters the fifth condenser lens 24, which focuses the split light from the beam splitter 81 onto the second light-incident end of the uniform light rod 90. The remaining separated light is then introduced into the detection module 82 in subsequent steps.

[0080] The detection module 82 includes, but is not limited to, detectors and sensors.

[0081] The detection module 82 mainly utilizes photoelectric conversion to perform photoelectric conversion on the light in the existing optical path of the DLP system, converting the optical signal into an electrical signal. The content of this electrical signal includes, but is not limited to, parameters such as brightness, spectrum, and color, and is not specifically limited.

[0082] In this embodiment, through the beam splitting processing of the beam splitter and the inclusion of a detection module 82 and a control module 83, light and color feedback of the optical path of the digital light processing system can be achieved. Furthermore, the control module 83 can adjust and convert the brightness and spectrum of the light source, for example... Figure 4 In this process, the control module 83 can adjust the brightness and spectrum of the first light source 11 and / or the second light source 12 based on the feedback from the detection module 82, thereby effectively expanding the color gamut of the digital light processing system.

[0083] In one embodiment, the first light-incident end of the light-diffusing rod 90 is parallel to the second light-incident end, and the light rays entering from the first light-incident end and the first light-incident end converge and are emitted from the light-out end of the light-diffusing rod 90.

[0084] It is worth mentioning that, in the embodiments provided in the present application, compatibility with common single-chip and three-chip DLP systems is achieved, that is, the light source part is compatible with the system regardless of whether time color separation using a color wheel or spatial color separation using a filter is used.

[0085] In an embodiment, a lamp set is provided, including the digital light processing system provided in the above embodiments and a light source. For example, the light source can be a single light source or multiple sets of light sources, such as a single light source as shown in Figure 1 , or two sets of light sources as shown in Figure 3 , 4 , without limitation.

[0086] It is worth mentioning that the lamp set can be applied in the field of vehicle lighting, such as in a vehicle lamp, or in other lighting fields, without limitation. For example, in the field of vehicle lighting, the digital light processing system in the above embodiments can be adapted to various types of vehicle lamps, including but not limited to vehicle headlamps, signal lamps, and tail lamps.

[0087] In an embodiment, a vehicle is provided, including the lamp set.

[0088] It is worth mentioning that, in this embodiment, the digital light processing system provided in the embodiments of the present application can be used in the field of vehicle lighting, effectively improving the utilization of luminous flux, better meeting the current needs of high brightness and large viewing angle lighting in the field of vehicle lighting, and having wide application value.

[0089] The above-described embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A light-diffusing rod, characterized in that, The light-emitting rod includes a light-emitting part, one end of which forms a light-emitting end, and the other end of which extends at an angle to form a first light-incident part and a second light-incident part, wherein one end of the first light-incident part forms a first light-incident end, and one end of the second light-incident part forms a second light-incident end.

2. The light-diffusing rod as described in claim 1, characterized in that, The material of the light-diffusing rod includes a reflective metal material, or the material of the light-diffusing rod includes a plastic material with an internal light refractive index greater than that of air.

3. The light-diffusing rod as described in claim 1 or 2, characterized in that: The first light-incident portion includes a first part and a second part, one end of the first part forms the first light-incident end, and the other end is connected to one end of the second part; The second light-incident portion includes a third portion and a fourth portion, one end of the third portion forming the second light-incident end, and the other end being connected to one end of the fourth portion; The other end of the second part forms an angle with one end of the fourth part.

4. The light-diffusing rod as described in claim 3, characterized in that, The first part and the third part are parallel to each other.

5. A digital optical processing system, characterized in that, The system includes a light-diffusing rod, a first light guide assembly, a prism, a digital micromirror element, a second light guide assembly, and a projection lens as described in any one of claims 1-4. The light from the light source enters the light-diffusing rod through the first light-incident end, and the light from the light-diffusing rod exits through the first light-guiding component and enters the prism. The prism reflects the light introduced by the first light guide component onto the digital micromirror element; When the digital micromirror element is in the first deflection state, it deflects the light reflected by the prism into light in the first direction, and the light in the first direction is transmitted from the prism to the projection lens. When the digital micromirror element is in the second deflection state, it emits light in the second direction and enters the second light-incident end of the light-guiding rod after passing through the second light-guiding component.

6. The digital optical processing system as described in claim 5, characterized in that, The light source includes one or more sets, with some of the light from the light source entering the light-diffusing rod through the first light-incident end, and the other part of the light from the light source entering the light-diffusing rod through the second light-incident end.

7. The digital optical processing system as described in claim 6, characterized in that, The multiple sets of light sources include a first light source and a second light source; The light from the first light source is focused by the first condenser lens and then enters the first light-incident end; The light from the second light source enters the second light-incident end after passing through the second condenser lens.

8. The digital optical processing system as described in claim 5, characterized in that, The first light guide assembly includes a third condensing lens, a first reflecting mirror, and a fourth condensing lens; The light emitted from the light-emitting end of the light-diffusing rod is focused by the third light-diffusing lens, then reflected by the first reflector to the fourth light-diffusing lens. The fourth light-diffusing lens focuses the light reflected by the first reflector onto the incident surface of the prism.

9. The digital optical processing system according to any one of claims 5-8, characterized in that, The second light guide assembly includes a freeform surface, a second reflector, and a fifth focusing lens; The second directional light is collected by the freeform surface and guided to the second reflector, and then reflected by the second reflector to the fifth focusing lens. The fifth focusing lens focuses the reflected light from the second reflector to the second incident end of the light-diffusing rod.

10. The digital optical processing system according to any one of claims 5-8, characterized in that, The digital light processing system also includes a detection module and a control module, and the second light guide component includes a freeform surface, a beam splitter, and a fifth focusing lens; The second-direction light is collected by the freeform surface and guided to the beam splitter. After being split and processed by the beam splitter, a portion of the split light enters the fifth condenser lens, which focuses a portion of the split light from the beam splitter onto the second incident end of the uniform light rod. Another portion of the beam split by the beam splitter reaches the detection module, which converts the other portion of the beam split into an electrical signal and outputs it to the control module. Based on the electrical signal, the control module outputs a light source adjustment signal to the light source.

11. A lamp assembly, characterized in that, Includes a light source and a digital light processing system as described in any one of claims 5-10.

12. A vehicle, characterized in that, Includes the lamp assembly as described in claim 11.

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