CN115199985A - Dynamic projection system, manufacturing method thereof and vehicle - Google Patents

Abstract

The application provides a dynamic projection system and a method of manufacturing the same. The dynamic projection system includes: a plurality of sets of light sources, the on-off states of the light sources being individually controlled; the light guide module comprises a plurality of light guide parts, wherein at least one light guide part is arranged on a light path of each group of light sources and is used for transmitting light emitted by the light sources in a total internal reflection manner; and the image generation element comprises a plurality of pattern areas, wherein at least one pattern area is arranged on the light path of each group of light sources and is used for enabling the light emitted by the corresponding light guide part to carry image information.

Description

Dynamic projection system, method of making the same, and vehicle

technical field

The present application relates to the field of optical systems, and more particularly, to a dynamic projection system and a manufacturing method thereof.

Background technique

Projection systems, such as welcome lights, are increasingly used in the automotive sector.

The welcome light is usually installed at the bottom of the door or rearview mirror. When the driver opens the door, different signs can be projected on the corresponding ground area around the car. On the one hand, car welcome lights can show their brand value by projecting patterns containing brand information, increase driving pleasure, and achieve the purpose of human-vehicle interaction; on the other hand, by projecting warning signs and illuminating the surrounding area of the car, it can improve Vehicle and occupant safety. Especially in the dark or at night, the effect of the welcome light is more obvious.

At present, there are two common solutions for implementing welcome lights. One solution uses a microlens array, which can form a projection effect with relatively uniform illumination, but the projection range is small and dynamic projection cannot be achieved. Another solution uses a lens group, which can achieve large-angle projection, but the illumination is not uniform enough and cannot achieve dynamic projection.

The industry expects a dynamic projection system capable of realizing dynamic projection and having at least one effect such as uniform illumination and large projection range.

SUMMARY OF THE INVENTION

An embodiment of the present application provides a dynamic projection system, the dynamic projection system includes: multiple groups of light sources whose on-off states are individually controlled; a light guide module including multiple light guide parts, wherein each group of At least one of the light guide parts is arranged on the light path of the light source, which is used to transmit the light emitted by the light source in a total internal reflection; At least one of the pattern areas is provided, so that the light emitted by the corresponding light guide portion carries image information.

In one embodiment, the dynamic projection system further comprises: a projection lens for projecting light carrying the image information.

In one embodiment, the dynamic projection system further includes: a control module configured to: control at least one of the light sources to achieve a flickering effect, control at least one of the light sources to achieve a brightness gradient effect, and control the at least one group of the light sources to achieve Turning on and off the effect in sequence and controlling at least two groups of the light sources to achieve at least one of the switching effects.

In one embodiment, the power of the light sources is individually controlled.

In one embodiment, the plurality of groups of light sources include at least one of LED light sources, LD laser light sources, and matrix LED light sources.

In one embodiment, the light guide portion is disposed between the plurality of groups of light sources and the image generating element.

In one embodiment, the distance between the light guide portion and the light source is within 3 mm.

In one embodiment, the distance between the image generating element and the light guide module is within 3 mm.

In one embodiment, the image generating element and the light guide module are attached and integrally formed.

In one embodiment, the light guide module further includes a connecting portion for connecting with the plurality of light guide portions as a whole.

In one embodiment, the connection portion is located at an end of the light guide portion away from the light source.

In one embodiment, the surface shape of the light incident end of the light guide portion includes at least one of a flat surface, an aspheric surface and a free-form curved surface.

In one embodiment, the material of the light guide module includes at least one of plastic, silica gel and glass.

In one embodiment, the shape of the light guide portion in the cross section of the optical path is at least one of a polygon, a frame, a circle and a ring.

In one embodiment, the shapes of the plurality of light guide parts in the cross section of the light path include: a triangle, a concave polygon, or a plurality of juxtaposed rectangles.

In one embodiment, the shapes of the plurality of light guide portions in the cross section of the optical path include: the ring shape and a circle located in the inner circle of the ring shape, or the frame shape and the shape located in the frame shaped inner circle of the polygon.

In one embodiment, the projection lens is used to project light carrying the image information in a magnified manner.

Yet another aspect of the present application provides a vehicle, comprising: a vehicle body; and the aforementioned dynamic projection system, the dynamic projection system is disposed at the front, rear or both sides of the vehicle body, and is used for projecting to a preset position .

Another aspect of the present application provides a method for manufacturing a dynamic projection system, the method comprising: disposing an image generating element including a plurality of pattern regions; disposing a light guiding module including a plurality of light guiding parts, wherein the guiding One end of the light part is arranged corresponding to the pattern area, and is used to transmit the light incident at the other end to the one end by total internal reflection; a plurality of groups of light sources whose switching states are individually controlled are arranged, wherein each group of the light sources is used for Light is emitted to the other end of the corresponding light guide portion, and the pattern area is used for the light transmitted by the corresponding light guide portion to carry image information.

In one embodiment, the step of arranging a light guide module including a plurality of light guide parts includes: setting a corresponding shape of the light guide part based on the pattern area.

In one embodiment, the method further comprises: providing a projection lens for projecting light carrying the image information.

In one embodiment, the power of the light sources is individually controlled.

In one embodiment, the method further includes: setting a control module, wherein the control module is configured to: control at least one of the light sources to achieve a flickering effect, control at least one of the light sources with a brightness gradient effect, control the at least one light source At least one of grouping the light sources to achieve the effect of turning on and off sequentially and controlling at least two groups of the light sources to achieve the switching effect.

In one embodiment, the light guide portion is disposed between the plurality of groups of light sources and the image generating element.

In one embodiment, the image generating element and the light guide module are attached and integrally formed.

In one embodiment, the step of disposing the light guide module includes: disposing a connecting portion for connecting with the plurality of light guide portions as a whole.

In one embodiment, the connection portion is located at an end of the light guide portion away from the light source.

In one embodiment, the projection lens is used to project light carrying the image information in a magnified manner.

The dynamic projection system provided by the embodiments of the present application can guide multiple relatively independently controlled light beams by setting multiple groups of light sources whose switch states are individually controlled, and configuring a light guide portion for each group of light sources. Then make each beam of light carry image information, which can realize dynamic projection. In addition, the light emitted by each group of light sources has uniform illuminance after passing through the light guide portion, and different lights have no influence on each other. The system projects a complete pattern without stray light.

In addition, the dynamic projection system can have a larger projection range, and can also realize different types of dynamic projections to adapt to various types of usage scenarios.

Description of drawings

Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

1 is a schematic structural diagram of a dynamic projection system according to an embodiment of the present application;

Fig. 2 is the left side view of the light source module and the light guide module in Fig. 1;

3 is a pattern projected by the dynamic projection system according to an embodiment of the present application;

4 is another pattern projected by the dynamic projection system according to an embodiment of the present application;

5 is a schematic structural diagram of another dynamic projection system according to an embodiment of the present application;

6 is a schematic structural diagram of another dynamic projection system according to an embodiment of the present application;

FIG. 7 is a left side view of a light source module and a light guide module according to another embodiment of the present application; FIG. 8 is a front view of FIG. 7 ;

9 to 12 are schematic diagrams of pattern information that can be projected by a dynamic projection system according to an embodiment of the present application;

Figure 13 is a left side view of a light guide module;

14 is a left side view of a light source module and a light guide module according to another embodiment of the present application; FIG. 15 is a schematic structural diagram of the light guide module in FIG. 14 ; FIGS. 16 to 18 are other embodiments according to the present application A schematic diagram of the pattern information that can be projected by the dynamic projection system;

19 is a left side view of a light source module and a light guide module according to another embodiment of the present application; FIGS. 20 to 21 are schematic diagrams of other pattern information that can be projected by the dynamic projection system according to an embodiment of the present application;

FIG. 22 is a left side view of a light source module and a light guide module according to another embodiment of the present application; FIG. 23 is a schematic diagram of pattern information that can be projected by another dynamic projection system according to an embodiment of the present application;

24 is a left side view of a light source module and a light guide module according to another embodiment of the present application; FIG. 25 is a schematic diagram of pattern information that can be projected by another dynamic projection system according to another embodiment of the present application; and

FIG. 26 is a flowchart of a method for manufacturing a dynamic projection system according to an embodiment of the present application.

Detailed ways

For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of the present application and are not intended to limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and/or" includes any and all combinations of one or more of the associated listed items.

It should be noted that in this specification, the expressions first, second, third etc. are only used to distinguish one feature from another feature and do not imply any limitation on the feature. Accordingly, the first light guide discussed below may also be referred to as the second light guide without departing from the teachings of the present application. vice versa.

In the drawings, the thickness, size and shape of components have been slightly adjusted for ease of illustration. The drawings are examples only and are not drawn strictly to scale. For example, the thickness of the image generating element and the length of the light guide portion in the optical path direction are not based on the actual production scale. As used herein, the terms "approximately," "approximately," and similar terms are used as terms of approximation, not of degree, and are intended to describe measurements that would be recognized by those of ordinary skill in the art or inherent bias in the calculated value.

It will also be understood that the terms "comprising", "comprising", "having", "comprising" and/or "comprising" when used in this specification mean that the stated features, elements and/or components are present , but does not preclude the presence or addition of one or more other features, elements, components and/or combinations thereof. Furthermore, when an expression such as "at least one of" appears after a list of listed features, it modifies the entire listed feature and not the individual elements of the list. Furthermore, when describing embodiments of the present application, the use of "may" means "one or more embodiments of the present application." Also, the term "exemplary" is intended to refer to an example or illustration.

Unless otherwise defined, all terms (including engineering and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be understood that, unless expressly stated otherwise in this application, words defined in commonly used dictionaries should be construed as having meanings consistent with their meanings in the context of the related art, rather than being idealized or excessive. Formal interpretation of meaning.

It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. In addition, unless clearly defined or contradicted by the context, the specific steps included in the methods described in the present application are not necessarily limited to the described order, but may be performed in any order or in parallel. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

FIG. 1 is a schematic structural diagram of a dynamic projection system according to an embodiment of the present application. Referring to FIG. 1 , the dynamic projection system provided by the embodiment of the present application includes: a light source module 1 , a light guide module 2 and an image generating element 3 . As shown in FIGS. 1 and 2 , the light source module 1 includes a plurality of groups of light sources 11 to 12 . The light source module 1 is controlled by a control module (not shown). Exemplarily, each of the light sources 111-122 is electrically connected to the control module. On the optical path of the light source module 1 , the light guide module 2 and the image generating element 3 are arranged in sequence.

As shown in FIG. 1 and FIG. 2 , the chief rays of light emitted by the light sources 111 to 122 in the light source module 1 may be substantially parallel. Exemplarily, each chief ray may also have a preset included angle. Each group of light sources includes at least one light source, and the chief rays of each group of light sources may be substantially parallel. The switching states of the light sources of different groups are controlled separately. Further, the switching state of each light source is individually controlled.

Several light sources as a group, these light sources can be relatively evenly distributed. For example, as shown in FIG. 2 , the top row of five light sources 111 to 112 is used as the first group of light sources 11 , and the second row of six light sources 121 to 122 from the top is used as the second group of light sources 12 . The number of light sources in each group of light sources 11 to 12 does not have to be the same, and can be set as required.

The light guide module 2 includes a plurality of light guide portions 21 to 22 . A first light guide portion 21 is provided on the light path of the first group of light sources 11 , and a second light guide portion 22 is provided on the light path of the second group of light sources 12 . The first light guide portion 21 is used for total internal reflection (TIR) to transmit the light emitted by the light sources 111 to 112 of the first group of light sources 11 . The second light guide portion 22 is used to transmit the light emitted by the light sources 121 to 122 of the second group of light sources 12 in a total internal reflection manner. The refractive index of the material of the light guide parts 21-22 is greater than that of the external environment such as air, and the light L1-L2 emitted by the light sources 111-122 enters the light guide part with a smaller deflection angle, and when transmitted to the light guide part 21- 22 , after being totally internally reflected, it continues to propagate in the light guide parts 21 to 22 without being refracted to the outside of the light guide parts 21 to 22 . Moreover, the light is continuously reflected in the light guide parts 21-22, and the mixing can be more uniform. Then, the light guide portions 21 to 22 emit light with uniform illuminance.

Further, at least one light guide portion is also provided on the optical path of each other group of light sources. In this embodiment, a light guide portion is correspondingly provided on the optical path of a group of light sources 11 to 12 . When a plurality of light guide portions are provided on the optical path of a group of light sources, these light guide portions may be provided in series along the light path. In some embodiments, for example, the size of the light source is relatively large, the light guide portion may also be correspondingly arranged in parallel in the light path of the light source.

The image generating element 3 includes a plurality of pattern regions. Wherein, each group of light sources 11-12 is provided with at least one pattern area on the optical path, so that the light emitted by the corresponding light guide portion carries image information. The pattern area may block a portion of the light so that the light passing therethrough carries the graphic information. The pattern area may also filter a portion of the wavelengths of light so that light passing therethrough carries color information. In this embodiment, on the cross section of the optical path (that is, in the plane shown in FIG. 2 ), the shape of the light-transmitting portion of the pattern area may be the same as and aligned with the shapes of the light guide portions 21 to 22 . This can project a rectangular shape with clear borders and no stray light.

In an exemplary embodiment, the dynamic projection system further includes a projection lens 4 .

The projection lens 4 is used to project light carrying image information. The projection lens 4 may include at least one lens. Specifically, the projection lens 4 of the present embodiment includes a first lens 41 , a second lens 42 and a third lens 43 which are sequentially arranged along the left side to the right side (projection side). The first lens 41 may have positive refractive power, the second lens 42 may have positive refractive power, and the third lens 43 may have negative refractive power. The projection lens 4 can also have other structures, and can be set according to requirements such as projection distance and image size. The projection lens 4 receives and projects the light carrying image information emitted by all the light guide parts 21 to 22 .

Exemplarily, the projection lens 4 is used to project the light L1-L2 carrying the image information in a magnified manner. The projection lens 4 is used to enlarge the projection and contribute to the miniaturization of the dynamic projection system. The miniaturized dynamic projection system can better adapt to the installation space, meet the needs of projection, and project the required images.

In the dynamic projection system provided by the present application, the switch states of each light source are independently controlled, so very flexible and diverse dynamic projection can be realized.

In an exemplary embodiment, the dynamic projection system includes a control module. The control module is configured to make the light source module 1 realize different lighting modes, and then make the projection of the dynamic projection system have different projection effects.

For example, in FIGS. 1 and 2 , the first group of light sources 11 is in an on state, while other light sources, such as the second group of light sources 12 , are in an off state. At this time, the dynamic projection system projects images corresponding to the first group of light sources 11 . Then, the first group of light sources 11 is turned off and the second group of light sources 12 is turned on, so that the dynamic projection system projects images corresponding to the second group of light sources 12 . By controlling the on and off states of a group of light sources, a flickering projection effect can be achieved. By alternately controlling the switch states of different groups of light sources, the effect of alternation and switching can be achieved.

For example, the five light sources of the first group of light sources 11 in FIG. 2 are independently controlled. The first light source 111 to the second light source 112 can be made to emit light in sequence, and only one light source can emit light at the same time. The light emitted by the first group of light sources 11 is all irradiated into the first light guide portion 21 , and is constrained by the shape of the first light guide portion 21 to be projected out. When only one light source emits light, the light emitted by the first light guide portion 21 also carries image information. However, when the size of the first light guide portion 21 is large, the illuminance at different positions will be different. When the first light source 111 to the second light source 112 emit light in sequence, the change in brightness will produce an effect similar to running water.

Further, each light source of the light source module 1 can realize dynamic projection in other ways under the control of the circuit. For example, the gradient effect can be achieved by controlling the power of the light source.

The dynamic projection system provided by the embodiment of the present application can project a light beam with no stray light, clear boundary and uniform illumination by setting the light source and the light guide part to cooperate with each other. Furthermore, the image information is carried in the light beam by the image generating element, so that an image with uniform illumination can be projected, and a dynamic effect can be realized.

In an exemplary embodiment, the power of the light sources is individually controlled. By configuring the circuit of the light source module 1, the actual power of each light source can be controlled. Furthermore, the light source can also emit light of different intensities in the on state. By controlling the overall power of a group of light sources and the power difference between different light sources, the light emitted by each light guide portion can be further controlled.

When the dynamic projection system is used for the welcome light equipped on the car, the light projected by the dynamic projection system can be irradiated on the ground, the wall or the vehicle body and other positions.

In another aspect, the present application provides a vehicle including a vehicle body and the aforementioned dynamic projection system. The placement position of the dynamic projection system on the vehicle body can be designed as required, for example, at the door, rearview mirror, front and rear of the vehicle body, and the like. The specific structure of the dynamic projection system can be designed according to the distance and angle between the dynamic projection system and the ground, for example. However, the same dynamic projection system can also be set in different positions, and the projection effect will be somewhat different.

FIG. 3 shows a projection image on the ground of a dynamic projection system provided according to an embodiment of the present application. In Figure 3, the lower end is near, and the upper end is far. The light L1 emitted by the first group of light sources 11 is projected as a bright band at the uppermost end in FIG. 3 . In the dynamic projection system, the powers of the light sources 111 to 122 are the same. It can be seen that the bright band in the vicinity has higher brightness, clearer boundary and more uniform illumination.

Referring to FIG. 4 , FIG. 4 shows a projection image on the ground of a dynamic projection system provided according to an embodiment of the present application. In Figure 4, the lower end is near, and the upper end is far. Compared with the dynamic projection system that forms the image in FIG. 3 , the power of different groups of light sources is different in this dynamic projection system. The power of the first group of light sources 11 is the largest, or the actual working power is the largest. The power of the second group of light sources 12 is smaller than that of the first group of light sources 11 .

By increasing the power of the first group of light sources 11 , the farthest bright band in FIG. 4 has higher brightness, clearer boundary and more uniform illumination than the farthest bright band in FIG. 3 . By adjusting the powers of different groups of light sources, the overall illuminance of the image in FIG. 4 is relatively uniform, that is, the difference between the bright band in the distance and the bright band in the vicinity is smaller. Moreover, the dimensions of the five bright bands in Fig. 4 are more consistent than those in Fig. 3 .

In an exemplary embodiment, the light source module 1 includes at least one of an LED light source, an LD laser light source and a matrix LED light source. The selection of the light source module 1 can be determined according to the usage requirements. In an exemplary embodiment, the light guide portion is disposed between the plurality of sets of light sources and the image generating element. The light emitted by the light source first passes through the light guide portion and then passes through the image generating element, the light is mixed evenly, and then used to light up the corresponding pattern area of the image generating element. Used as the image source of the projection lens 4 .

In an exemplary embodiment, the light guide module further includes a connection part for connecting with the plurality of light guide parts as a whole. As shown in FIGS. 1 and 2 , the connection portion 20 is integrally connected with the light guide portions 21 to 22 . Specifically, the connection portion 20 and the light guide portions 21 to 22 are made integrally based on the same material. In this way, the light guide module 2 can be an integral part, which is convenient for mass production and easy to assemble. In some embodiments, the connection part 20 may be connected to the sidewalls of the light guide parts 21 - 22 . Further, the material of the connection portion 20 and the material of the light guide portions 21 to 22 may be different.

In an exemplary embodiment, the material of the light guide module includes at least one of plastic, silicone and glass. The light guide module can be integrally made of a material, and the refractive index of the material is greater than that of air, which facilitates the realization of total internal reflection of light. Exemplarily, the refractive index of the material of the light guide portion is greater than the refractive index of the material of the connecting portion.

In an exemplary embodiment, the connection part 20 is located at one end of the light guide parts 21 - 22 away from the light sources 111 - 122 . The light emitted by the light sources 111-122 first passes through the light guide parts 21-22, and then passes through the connecting part 20 and the image generating element 3, so that the light emitted by the light sources 111-122 can be distributed relatively uniformly and then carry image information, and reduce Small stray light and crosstalk.

Referring to Figure 5, there is shown a dynamic projection system according to one embodiment of the present application. The distance between the first light guide portion 21 and the first group of light sources 11 is within 3 mm. Exemplarily, the distance between the light incident end 211 of the first light guide portion 21 and the first group of light sources 11 is between 0.1 mm and 3 mm. Specifically, the distance is 1 mm. Controlling the distance between the first group of light sources 11 and the first light guide portion 21 can ensure that the light emitted by each light source can enter the first light guide portion 21 , thereby improving the utilization rate of the first light guide portion 21 for the first group of light sources 11 .

Exemplarily, the distances between the light guide parts 21-22 and the light sources 11-12 in each group may be approximately the same, or may be different from each other. Usually, the distance between each light guide portion 21-22 and the corresponding group of light sources 11-12 is within 3 mm. The light guide portions 21 to 22 may be substantially parallel to each other, or may actually be arranged at a certain angle.

In an exemplary embodiment, the distance between the image generating element 3 and the light guide module 2 is within 3 mm. Exemplarily, the distance between the light exit end 212 of the first light guide portion 21 and the image generating element 3 is between 0.1 mm and 3 mm. Specifically, the distance is 1 mm. Further, the distance between each light guide portion of the light guide module 2 and the image generation element 3 is approximately equal. Controlling the distance between the image generating element 3 and each light guide part can ensure that the light emitted by the light guide part can smoothly irradiate the corresponding pattern area of the image generating element 3 , thereby realizing projection with good image performance.

In an exemplary embodiment, the surface shape of the light incident end 211 of the first light guide part 21 includes at least one of a plane, an aspherical surface and a free-form curved surface. By adjusting the surface shape of the light input end 211, the light emitted by the light source can be better collected. In addition, the divergence angle of the light incident through the incident end 211 can also be reduced, so that more light rays are totally internally reflected in the first light guide portion 21 without being refracted. The critical angle A of total internal reflection satisfies: sinA=n1/n2, where n1 is the refractive index of air, and n2 is the refractive index of the light guide portion.

Exemplarily, the components of the dynamic projection system shown in FIG. 5 may be fixedly connected. Specifically, each component of the light guide module 2 can be mounted on a mounting bracket (not shown). Illustratively, the projection lens 4 can be moved or zoomed.

Referring to Figure 6, there is shown a dynamic projection system according to one embodiment of the present application. The dynamic projection system includes a light source module 1 , a light guide module 2 , an image generating element 3 and a projection lens 4 . The content that is the same or similar to the foregoing embodiment will not be repeated. Exemplarily, in this embodiment, the image generating element 3 and the light guide module 2 are attached and integrally formed. The integrated image generating element 3 and the light guide module 2 are more convenient to assemble the dynamic projection system.

As in the dynamic projection system provided by the above-mentioned embodiment, the shape of the plurality of light guide parts in the cross section of the light path (the chief ray of the light source) includes a plurality of juxtaposed rectangles.

In an exemplary embodiment, the shape of the light guide portion in the cross section of the light path is at least one of a polygon, a circle and a ring. The polygon may include various shapes such as rectangle, triangle, and concave shape.

Referring to FIGS. 7 and 8 , a light guide module of a dynamic projection system according to an embodiment of the present application is shown. Specifically, as shown in FIG. 7 , the shapes of the plurality of light guide portions 21 to 22 in the cross section of the optical path include a ring shape and a circle located in the inner ring of the ring shape.

FIG. 7 also shows the first group of light sources 11 and the second group of light sources 22 that cooperate with the light guide module 2 . The light sources of the first group of light sources 11 are substantially evenly distributed at the annular first light guide portion 21 . The light sources of the second group of light sources 12 are substantially evenly distributed at the circular second light guide portion 22 .

Further, as shown in the cross-sectional view shown in FIG. 8 , the connection portion 20 is integrally connected with the light guide portions 21 to 22 .

The dynamic projection system can be used to project images as shown in FIGS. 9 to 11 . The image generating element may include an annular pattern area and other pattern areas located on the inner ring of the annular shape. The light emitted by the first light guide portion 21 can be used to project the ring shape in the images shown in FIGS. 9 to 11 after passing through the image generating element. The light emitted by the second light guide portion 22 can carry various images of the annular inner ring after passing through the image generating element. The image information that the image generating element can provide can be set according to needs, and can be used to convey different information such as warning, instruction, prohibition or order according to the usual meaning of the image. The dynamic projection system provided by the present application can also project characters or project color images.

As shown in Figure 9, the inner circle of the annular image is designed with an exclamation mark. As shown in Figure 10, the inner circle of the annular image is designed with a triangle. As shown in Figure 11, the inner circle of the annular image is designed with angular symbols.

Referring to FIGS. 12 and 13, FIG. 12 shows an image projected by a dynamic projection system according to an embodiment of the present application. The inner circle of the ring image is designed with two patterns, a triangle and an exclamation mark, and more patterns can be designed.

FIG. 13 shows a light guide module of a dynamic projection system according to an embodiment of the present application. The light guide module 2 includes a first light guide portion 21 with an annular cross-sectional shape, a second light guide portion 22 and a third light guide portion 23 located on the inner circle of the first light guide portion 21 . The dynamic projection system configured with the light guide module 2 can be used to project the image as shown in FIG. 12 .

For example, the first pattern area of the image generating element (not shown) and the first light guide portion 21 are disposed in the light path of the first group of light sources, which can be used to carry the annular image in the projection light. The second pattern area and the second light guide portion 22 are disposed in the light path of the second group of light sources, and can be used to carry a triangular image in the projection light. The third pattern area and the third light guide portion 23 are disposed in the light path of the third group of light sources, and can be used to carry an exclamation mark image in the transmitted light.

When using the dynamic projection system, the switching states or working powers of the second group of light sources and the third group of light sources can be adjusted to realize switching display of triangle images and exclamation marks or other dynamic projections.

In an exemplary embodiment, referring to FIGS. 14 to 18 , the dynamic projection system provided by the present application includes a light source module 1 and a light guide module 2 .

The cross-sectional shape of the light guide module 2 is a triangular frame shape. The light source module 1 includes a plurality of light sources arranged in a triangle. The dynamic projection system provided in this embodiment can be used to project the images shown in FIG. 16 to FIG. 18 .

In an exemplary embodiment, referring to FIG. 19 , the dynamic projection system provided by the present application includes a light source module and a light guide module 2 .

The light guide module 2 includes a first light guide portion 21 in the shape of a triangular frame and a second light guide portion 22 located at an inner circle of the first light guide portion 21 . The light guide module 2 also includes a connecting portion (not shown). The connecting portion is disposed on the side of the light guide portions 21 to 22 facing away from the light source module, and may be a plate shape or a strip shape.

The second light guide portion 22 may be polygonal, eg, triangular. The second light guide portion 22 may also be provided in other shapes. The light source module includes a first group of light sources 11 disposed along the first light guide portion 21 and a second group of light sources 22 disposed at the second light guide portion 22 .

The dynamic projection system provided in this embodiment can be used to project the images shown in FIG. 20 and FIG. 21 . The first light guide portion 21 is used for projecting a triangular frame-shaped image, and the second light guide portion 22 is used for projecting a triangle as shown in FIG. 20 or an exclamation mark as shown in FIG. 21 .

In an exemplary embodiment, the shape of the light guide portion of the light guide module in the vertical plane of the light path may be a concave polygon. Compared with convex polygons such as triangles and rectangles, concave polygons can form richer images.

In an exemplary embodiment, referring to FIG. 22 , the dynamic projection system provided by the present application includes a light source module and a light guide module 2 .

The light guide module 2 includes a plurality of light guide parts 21 to 23 with different shapes. Illustratively, the shapes of these light guide portions 21 to 23 may be set according to, for example, the strokes of Chinese characters. Exemplarily, the shape of the light guide portion may be a concave polygon or a special-shaped shape, and is used to transmit light to a radical and a radical of the Chinese character to be projected. As shown in FIG. 23, the pattern area of the image generating element (not shown) in this embodiment is the character "red" in Chinese characters. Alternatively, the pattern area of the image generating element may be other text. The light guide module 2 includes connecting parts (not shown) to connect these light guide parts 21 to 23 .

The light source module includes three groups of light sources 11 to 13 corresponding to the light guide parts 21 to 23 . Each group of light sources 11 to 13 is used for emitting light to one end of the corresponding light guide portion 21 to 23 facing away from the image element.

In one embodiment, referring to FIG. 24 , the dynamic projection system provided by the present application includes a light source module and a light guide module 2 .

The light guide module 2 includes two rectangular light guide parts 21 to 22 arranged side by side in the lateral direction, and a connecting part (not shown) for connecting the first light guide part 21 and the second light guide part 22 . The light source module includes a first group of light sources 11 corresponding to the first light guide portion 21 and a second group of light sources 12 corresponding to the second light guide portion 22 .

The dynamic projection system provided in this embodiment can be used to project the image shown in FIG. 25, for example. For example, the light emitted by the first light guide part 21 carries the image of the downward arrow, and the light emitted by the second light guide part 22 carries the image of the upward arrow.

As shown in FIG. 26, another aspect of the present application also provides a method 1000 for manufacturing a dynamic projection system. The method 1000 includes the following steps:

Step S101, setting an image generating element including a plurality of pattern regions.

Step S102, a light guide module including a plurality of light guide parts is arranged. One end of the light guide portion is arranged corresponding to the pattern area, and is used to transmit the light incident at the other end to one end by total internal reflection.

Further, the step of arranging the light guide module includes: arranging a connecting part for connecting with the plurality of light guide parts as a whole.

Step S103, setting a plurality of groups of light sources whose switch states are individually controlled. Each group of light sources is used for emitting light to the other end of the corresponding light guide portion. Illustratively, the power of each light source is also independently controlled.

By arranging the image generating element, at least one pattern area can be arranged on the optical path of each group of light sources, wherein the pattern area is used for the light emitted by the corresponding light guide portion to carry image information.

In an exemplary embodiment, the shape of the corresponding light guide portion is set based on the pattern area.

The method provided in this application can be used to manufacture a dynamic projection system. The pattern on the image generating element may include any shape, such as circle, ring, triangle, rectangle, special shape, polygon, and the like. The pattern on the image generating element can be presented as a whole, or can be divided into different pattern areas, and then combined or presented individually. After being divided according to the pattern areas, each pattern area may have an outer shape and may have a distance from each other. A light guide portion may be configured for each pattern area, and the shape of the light guide portion in the cross section of the optical path may be comparable to or slightly larger than the corresponding pattern area. The plurality of light guide parts do not interfere with each other, so that a plurality of groups of light sources with different arrangements can be arranged together. The light sources are arranged approximately uniformly. Optionally, the light sources may be densely distributed, or may be arranged at certain intervals according to the size and light intensity of each light source.

The dynamic projection system manufactured by the method provided in the present application can realize projection images with rich shapes, and realize dynamic projection by controlling the light source through the shape-coordinated arrangement among the multiple groups of light sources, light guide modules, and image generating elements. .

Exemplarily, the method 1000 further includes step S104 of setting a projection lens for projecting light carrying image information.

Step S105, setting a control module for controlling the light source.

In some embodiments, the light guides are disposed between groups of light sources and image generating elements.

In some embodiments, the image generating element is attached and integrally formed with the light guide module.

In some embodiments, the step of arranging the light guide module includes: arranging a connecting portion for connecting with the plurality of light guide portions as a whole.

In some embodiments, the connecting portion is located at one end of the light guide portion away from the light source.

In some embodiments, a projection lens is used to magnify the projection of light carrying image information.

The above description is only a preferred embodiment of the present application and an illustration of the applied technical principles. Those skilled in the art should understand that the protection scope involved in the present application is not limited to the technical solution formed by the specific combination of the above-mentioned technical features, and should also cover the above-mentioned technical features without departing from the technical concept. Other technical solutions formed by any combination of its equivalent features. For example, a technical solution is formed by replacing the above features with the technical features in the present application (but not limited to) with similar functions.

Claims (10)

1. A dynamic projection system, comprising:

a plurality of sets of light sources, the on-off states of the light sources being individually controlled;

the light guide module comprises a plurality of light guide parts, wherein at least one light guide part is arranged on the light path of each group of light sources and is used for transmitting the light emitted by the light sources in a total internal reflection manner; and

and the image generation element comprises a plurality of pattern areas, wherein at least one pattern area is arranged on the light path of each group of light sources and is used for enabling the light emitted by the corresponding light guide part to carry image information.

2. The dynamic projection system of claim 1, further comprising:

and the projection lens is used for projecting light carrying the image information.

3. The dynamic projection system of claim 2, wherein the projection lens is to project light carrying the image information in magnification.

4. The dynamic projection system of claim 1, wherein the power of the light sources is individually controlled.

5. The dynamic projection system of claim 1 or 4, further comprising:

a control module configured to: at least one of controlling at least one light source to realize a flickering effect, controlling at least one light source brightness gradient effect, controlling at least one group of light sources to realize a sequential on-off effect, and controlling at least two groups of light sources to realize a switching effect.

6. The dynamic projection system of claim 1, wherein the plurality of groups of light sources comprise at least one of LED light sources, LD laser light sources, and matrix LED light sources.

7. The dynamic projection system of claim 1, wherein the light guide is disposed between the plurality of sets of light sources and the image-generating element.

8. The dynamic projection system of claim 7, wherein a distance between the light directing portion and the light source is within 3 mm.

9. A vehicle, characterized by comprising:

a vehicle body; and

the dynamic projection system of any of claims 1 to 8, which is disposed in front of, behind, or on both sides of the vehicle body and is adapted to project toward a preset position.

10. A method for manufacturing a dynamic projection system, comprising:

setting an image generating element including a plurality of pattern regions;

arranging a light guide module comprising a plurality of light guide parts, wherein one end of each light guide part is arranged corresponding to the pattern area and used for transmitting light incident from the other end to the one end in a total internal reflection manner;

a plurality of sets of light sources whose switching states are individually controlled are provided, wherein each set of light sources is configured to emit light to the other end of the corresponding light guide part, and the pattern region is configured to cause the light transmitted by the corresponding light guide part to carry image information.

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