CN115199985A

CN115199985A - Dynamic projection system, manufacturing method thereof and vehicle

Info

Publication number: CN115199985A
Application number: CN202110376112.7A
Authority: CN
Inventors: 郎海涛; 潘红响; 李�浩
Original assignee: Ningbo Sunny Automotive Optech Co Ltd
Current assignee: Ningbo Sunny Automotive Optech Co Ltd
Priority date: 2021-04-08
Filing date: 2021-04-08
Publication date: 2022-10-18

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, manufacturing method thereof and vehicle

Technical Field

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

Background

Projection systems, such as usher lamps, are increasingly used in the automotive field.

The welcome lamp is usually installed at the bottom of a car door or a rearview mirror, and when a driver and a passenger open the car door, different marks can be projected on corresponding ground areas around the car. On one hand, the automobile welcome lamp can show the brand value of the automobile welcome lamp by projecting patterns containing brand information, so that the driving and riding pleasure is increased, and the purpose of human-vehicle interaction is achieved; on the other hand, the safety of the automobile and drivers and passengers can be improved by projecting the warning mark and illuminating the peripheral area of the automobile. Particularly, the effect of the welcome lamp is more obvious in dark sky or at night.

There are two common approaches to implementing a courtesy light. One solution utilizes a microlens array, which can produce a projection effect with relatively uniform illumination, but the projection range is small and dynamic projection cannot be achieved. In another scheme, a lens group is utilized, so that large-angle projection can be realized, but the illumination is not uniform enough, and dynamic projection cannot be realized.

It is desirable to provide a dynamic projection system capable of realizing dynamic projection and having at least one effect of uniform illumination and wide projection range.

Disclosure of Invention

Embodiments of the present application provide 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 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 generating 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.

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

In one embodiment, the dynamic projection system further comprises: 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.

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

In one embodiment, the plurality of sets of light sources includes at least one of an LED light source, an LD laser light source, and a matrix LED light source.

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

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

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

In one embodiment, the image generating element is attached to and integrally molded with the light guide module.

In one embodiment, the light guide module further includes a connection portion for integrally connecting the plurality of light guide portions.

In one embodiment, the connecting 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 part includes at least one of a plane, an aspherical surface, and a free-form surface.

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

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

In one embodiment, the shape of the plurality of light guide portions within the cross section of the optical path includes: a triangle, a concave polygon, or a plurality of rectangles juxtaposed.

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

In one embodiment, the projection lens is configured to project light carrying the image information in an enlarged manner.

Yet another aspect of the present application provides a vehicle including: a vehicle body; and the dynamic projection system is arranged at the front part, the rear part or two 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: providing 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.

In one embodiment, the step of providing a light guide module comprising a plurality of light guide portions comprises: and setting the shape of the corresponding light guide part based on the pattern region.

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

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

In one embodiment, the method further comprises: providing a control module, wherein the control module is 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.

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

In one embodiment, the step of providing the light guide module comprises: a connecting portion for integrally connecting the plurality of light guide portions is provided.

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

The dynamic projection system provided by the embodiment of the application can guide a plurality of relatively independently controlled light beams by arranging a plurality of groups of light sources with the switch states controlled independently and configuring the light guide part for each group of light sources. And then each beam of light carries image information, so that dynamic projection can be realized. And the light emitted by each group of light sources has uniform illumination after passing through the light guide part, 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 projection so as to adapt to various types of use scenes.

Drawings

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

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

FIG. 2 is a left side view of the light source module and the light guide module of FIG. 1;

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

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

FIG. 5 is a schematic block diagram of another dynamic projection system in accordance with an embodiment of the present application;

FIG. 6 is a schematic block diagram of another dynamic projection system in accordance with 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;

FIGS. 9-12 are schematic diagrams of pattern information that can be projected by a dynamic projection system according to embodiments of the present application;

FIG. 13 is a left side view of a light guide module;

FIG. 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 block diagram of the light guide module of FIG. 14; FIGS. 16-18 are schematic diagrams of still further pattern information that may be projected by a dynamic projection system according to embodiments of the present application;

FIG. 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. 20-21 are schematic diagrams of still further pattern information that may be projected by a dynamic projection system according to embodiments 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 another exemplary pattern information that may be projected by a dynamic projection system according to an embodiment of the present application;

FIG. 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 view of another exemplary embodiment of a dynamic projection system that can project pattern information; and

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

Detailed Description

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 the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present application in any way. Like reference numerals refer to like elements throughout the specification. 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 used only to distinguish one feature from another, and do not represent any limitation on the features. Thus, a first light directing portion discussed below can also be referred to as a second light directing portion without departing from the teachings of the present application. And vice versa.

In the drawings, the thickness, size and shape of the components have been slightly adjusted for convenience of explanation. The figures are purely diagrammatic and not drawn to scale. For example, the thickness of the image-generating element, the length of the light guide portion in the optical path direction, and the like are not in proportion to actual production. As used herein, the terms "approximately," "about," and the like are used as table approximation terms, not as table degree terms, and are intended to account for inherent deviations in measured or calculated values that would be recognized by one of ordinary skill in the art.

It will be further understood that the terms "comprises," "comprising," "has," "having," "includes" and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Moreover, when a statement such as "at least one of" appears after a list of listed features, the entirety of the listed features is modified rather than modifying individual elements in the list. Furthermore, the use of "may" mean "one or more embodiments of the application" when describing embodiments of the application. Also, the term "exemplary" is intended to refer to examples or illustrations.

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 will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. In addition, unless explicitly defined or contradicted by context, the specific steps included in the methods described herein are not necessarily limited to the order described, but can be performed in any order or in parallel. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Fig. 1 is a schematic block diagram of a dynamic projection system according to an embodiment of the present application. Referring to fig. 1, a dynamic projection system provided in an 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 fig. 1 and 2, the light source module 1 includes a plurality of sets of light sources 11 to 12. The light source module 1 is controlled by a control module (not shown), to which each of the light sources 111-122 is illustratively electrically connected. On the optical path of the light source module 1, a light guide module 2 and an image generating element 3 are disposed in this order.

As shown in fig. 1 and 2, the principal rays of the light emitted from the light sources 111 to 122 in the light source module 1 may be substantially parallel. Illustratively, the chief rays may have a preset included angle therebetween. Each group of light sources comprises at least one light source, and the chief rays of each group of light sources may be substantially parallel. The switching states of the different groups of light sources are controlled separately. Further, the switching state of each light source is controlled individually.

Several light sources are used as a group, which may be distributed relatively evenly. For example, as shown in fig. 2, five light sources 111 to 112 in the uppermost row are used as the first group light sources 11, and six light sources 121 to 122 in the second row from the top are used as the second group light sources 12. The number of light sources in each group of light sources 11 to 12 is not necessarily the same, and may be set as needed.

The light guide module 2 includes a plurality of light guide portions 21 to 22. First light guide unit 21 is disposed on the optical path of first group light sources 11, and second light guide unit 22 is disposed on the optical path of second group light sources 12. First light guide portion 21 is configured to transmit light emitted by light sources 111-112 of first group of light sources 11 by Total Internal Reflection (TIR). Second light directing part 22 is adapted to totally internally reflect light emitted by light sources 121-122 of second group of light sources 12. The refractive index of the material of light guide portions 21 to 22 is greater than the refractive index of the external environment, for example, air, and the light L1 to L2 emitted from each of light sources 111 to 122 has a small deflection angle after entering the light guide portions, and when being transmitted to the sidewalls of light guide portions 21 to 22, is totally internally reflected and then is continuously transmitted within light guide portions 21 to 22 without being refracted to the outside of light guide portions 21 to 22. Light is reflected continuously in light guide portions 21 to 22, and can be mixed more uniformly. Light guide portions 21 to 22 emit light with uniform illuminance.

Furthermore, at least one light guide part is arranged on the light path of each of the rest light sources. In the present embodiment, one light guide portion is provided on the optical path of one set of light sources 11 to 12. When a plurality of light guide portions are disposed on the optical path of one set of light sources, the light guide portions may be disposed in series along the optical path. In some embodiments, for example, if the size of the light source is large, the light guide portions may be correspondingly arranged in parallel in the light path of the light source.

The image generating element 3 includes a plurality of pattern regions. At least one pattern area is arranged on the light path of each group of light sources 11-12 and used for enabling the light emitted by the corresponding light guide part to carry image information. The patterned area may be a region that blocks a portion of the light so that the light transmitted through it carries graphical information. The patterned area may also be a filter that filters a portion of the wavelength band of light so that the light transmitted through it carries color information. In the present embodiment, the shape of the light-transmitting portion of the pattern region may be the same as and aligned with the shape of light guide portions 21 to 22 in the cross section of the optical path (i.e., in the plane shown in fig. 2). This allows to project a rectangular pattern with clear boundaries and no veiling glare.

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

The projection lens 4 is used to project light carrying image information. The projection lens 4 may comprise 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 provided in this order from the left side to the right side (projection side). The first lens 41 may have a positive optical power, the second lens 42 may have a positive optical power, and the third lens 43 may have a negative optical power. The projection lens 4 may have other configurations, and may be set according to the need for the projection distance, the image size, and the like. The projection lens 4 can receive and project the light carrying image information emitted from all the light guide portions 21 to 22.

Illustratively, the projection lens 4 is used to project the light L1 to L2 carrying the image information in enlargement. The projection lens 4 is used for enlarged projection, contributing to downsizing of the dynamic projection system. The miniaturized dynamic projection system can better adapt to the installation space, meet the use requirement of projection and project required images.

In the dynamic projection system provided by the application, the on-off state of each light source is independently controlled, so that very flexible and various dynamic projections can be realized.

In an exemplary embodiment, the dynamic projection system includes a control module. The control module is configured to enable the light source module 1 to realize different lighting modes, which in turn enables the projection of the dynamic projection system to have different projection effects.

For example, in fig. 1 and 2, the first group of light sources 11 is in an on state, while the other light sources, for example, include the second group of light sources 12, are in an off state. The dynamic projection system now projects an image corresponding to the first set 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 an image corresponding to the second group of light sources 12. By controlling the on and off states of a group of light sources, the flickering projection effect can be realized. By alternately controlling the on-off states of different groups of light sources, the effect of alternation and switching can be realized.

For example the five light sources of the first set of light sources 11 in fig. 2 are controlled independently. The first light source 111 to the second light source 112 may be sequentially illuminated, and only one light source may be illuminated at a time. The light emitted from the first group of light sources 11 is irradiated into the first light guide part 21, and is constrained by the shape of the first light guide part 21 and then projected. When only one light source emits light, the light emitted from the first light guide part 21 also carries image information. However, when the size of first light guide part 21 is large, illuminance at different positions may be different. When the first light source 111 to the second light source 112 sequentially emit light, the change in brightness may generate an effect similar to running water.

Further, each light source of the light source module 1 can realize dynamic projection in other modes under the control of the circuit. The effect of the gradual change is achieved, for example, by controlling the power of the light source.

The dynamic projection system provided by the embodiment of the application can project the light beam without stray light, with a clear boundary and uniform illumination by arranging the light source and the light guide part to be matched for use. Further, the image generating element enables the light beams to carry image information, 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 controlled individually. By configuring the circuitry of the light source module 1, the actual power of each light source can be controlled. And the light source can emit light with 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 part can be further controlled.

When the dynamic projection system is used for a welcome lamp equipped on an automobile, light projected by the dynamic projection system can irradiate on the ground, a wall, a vehicle body or other positions.

In another aspect, the present application provides a vehicle including a vehicle body and the aforementioned dynamic projection system. The dynamic projection system can be designed at the arrangement position of the vehicle body according to requirements, such as a vehicle door, a rear view mirror, the front part and the rear part 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 be disposed at different positions, and the projection effect has some differences.

FIG. 3 illustrates a projected image of a dynamic projection system provided in accordance with an embodiment of the present application on a ground surface. In fig. 3, the lower end is the proximal portion and the upper end is the distal portion. The light L1 emitted by the first group of light sources 11 is projected as a bright band at the top in fig. 3. In the dynamic projection system, the power of each light source 111 to 122 is the same. It can be seen that the bright band at near is brighter, the border is clearer and the illumination is more uniform.

Referring to fig. 4, fig. 4 shows a projected image of a dynamic projection system provided according to an embodiment of the present application on the ground. In fig. 4, the lower end is the proximal portion and the upper end is the distal portion. The dynamic projection system has different power for different sets of light sources compared to the dynamic projection system that forms the image in fig. 3. The first group of light sources 11 has the maximum power, or actually operates at the maximum power. The power of the second set of light sources 12 is somewhat less than the operating power of the first set of light sources 11.

By increasing the power of the first group of light sources 11, the brightness is higher, the boundary is clearer and the illuminance is more uniform in the bright band furthest away in fig. 4 compared to the bright band furthest away in fig. 3. By adjusting the power of the different groups of light sources, the illuminance of the image as a whole in fig. 4 is relatively uniform, i.e. the difference between the far bright band and the near bright band is smaller. And the size of the five bright bands in fig. 4 is more consistent than that of 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 may be determined according to the use requirement. 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 passes through the light guide part and then the image generating element, and the light is mixed uniformly and is further used for lightening the corresponding pattern area of the image generating element. As the image source of the projection lens 4.

In an exemplary embodiment, the light guide module further includes a connection part for integrally connecting the plurality of light guide parts. As shown in fig. 1 and 2, connection portion 20 is integrally connected to light guide portions 21 to 22. Specifically, connecting portion 20 and light guide portions 21 to 22 are integrally formed from the same material. The light guide module 2 can be an integrated part, and is convenient for batch production and assembly. In some embodiments, the connection part 20 may be a sidewall connected to the light guide parts 21 to 22. Further, the material of connecting portion 20 and the materials of 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 may be integrally made of a material having a refractive index greater than that of air, which facilitates total internal reflection of light. Illustratively, the refractive index of the material of the light guide part is greater than the refractive index of the material of the connection part.

In an exemplary embodiment, connection portion 20 is located at one end of light guide portions 21 to 22 away from light sources 111 to 122. The light emitted from the light sources 111 to 122 passes through the light guide parts 21 to 22, then passes through the connecting part 20 and the image generating element 3, so that the light emitted from the light sources 111 to 122 is distributed relatively uniformly and then carries image information, and stray light and crosstalk are reduced.

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

For example, the distances between the light guide portions 21 to 22 and the light sources 11 to 12 of the respective groups may be substantially equal to each other or may be different from each other. The distance between each light guide 21 to 22 and the corresponding light source 11 to 12 is usually within 3 mm. Light guide portions 21 to 22 may be substantially parallel to each other, or may be provided at a predetermined angle.

In an exemplary embodiment, the distance between the image generating element 3 and the light guiding module 2 is within 3 mm. Exemplarily, the light exit end 212 of the first light guide part 21 is at a distance of between 0.1mm and 3mm from the image generating element 3. In particular, the distance is 1mm. Further, the distances between the light guide portions of the light guide module 2 and the image generating elements 3 are substantially equivalent. Controlling the distance between the image generating element 3 and each light guide portion can ensure that the light emitted from the light guide portion can be smoothly irradiated on the corresponding pattern region 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 surface. By adjusting the surface shape of the light-entering end 211, the light emitted by the light source can be better collected. Furthermore, the divergence angle of the light incident through the incident end 211 can be reduced, and more light rays are totally internally reflected in the first light guide part 21 without being refracted. The critical angle for total internal reflection A satisfies: sinA = n1/n2, where n1 is the refractive index of air and n2 is the refractive index of the light guide portion.

Illustratively, the components of the dynamic projection system shown in FIG. 5 may be fixedly coupled. In particular, the components of the light guide module 2 may be mounted to a mounting frame (not shown). Illustratively, the projection lens 4 may be moved or zoomed.

Referring to FIG. 6, a dynamic projection system according to one embodiment of the present application is shown. 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 same or similar contents as those of the foregoing embodiments are not repeated herein. In the present embodiment, the image generating element 3 is attached to the light guide module 2 and integrally molded. The integrated image generating element 3 and the light guide module 2 facilitate the assembly of the dynamic projection system.

The dynamic projection system provided in the above embodiment, wherein the plurality of light guide portions have a shape in a cross section of the optical path (the principal ray of the light source) including a plurality of rectangles arranged side by side.

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

Referring to fig. 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 shape of the plurality of light guide portions 21 to 22 in the cross section of the optical path includes a ring shape and a circular shape located at the inner circumference of the ring shape.

Fig. 7 also shows a first set of light sources 11 and a second set of light sources 22 cooperating with the light guiding module 2. The light sources of the first group of light sources 11 are substantially uniformly distributed at the annular first light guide part 21. The light sources of the second group of light sources 12 are substantially uniformly distributed at the circular second light guide portion 22.

Further, as shown in the sectional view of fig. 8, connection portion 20 is integrally connected to light guide portions 21 to 22.

The dynamic projection system may be used to project images as shown in fig. 9-11. The image-generating element may include an annular pattern region and other pattern regions located at an inner circumference of the annular shape. The light emitted by the first light guide part 21 after passing through the image generating element can be used to project a ring shape in the images shown in fig. 9 to 11. The light emitted from the second light guide part 22 passes through the image generating element, and then various images of the annular inner ring can be carried. The image information that the image generating element can provide may be set as desired, and may be used to convey different information such as warnings, instructions, prohibition, or commands, depending on the general meaning of the image. The dynamic projection system provided by the present application may also project text, or project color images.

As shown in fig. 9, the inner circle of the annular image is designed with exclamation marks. As shown in fig. 10, the inner circle of the annular image is designed to have a triangular shape. As shown in fig. 11, the inner circle of the ring-shaped image is designed with an angular symbol.

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

A light guide module of a dynamic projection system according to an embodiment of the present application is shown in fig. 13. The light guide module 2 includes a first light guide portion 21 having a ring-shaped cross-sectional shape, and a second light guide portion 22 and a third light guide portion 23 located at an inner ring of the first light guide portion 21. A dynamic projection system configured with the light guide module 2 can be used to project an image as shown in fig. 12.

A first pattern area, for example an image generating element (not shown), is arranged in the optical path of the first set of light sources with the first light guide 21, which may be used to bring a ring-shaped image in the projection light. The second pattern area and the second light guide part 22 are disposed in the light path of the second group of light sources, and can be used to make the projection light carry a triangle image. The third pattern region and the third light guide portion 23 are disposed in the optical path of the third group of light sources, and may be configured to allow the transmitted light to carry an exclamation mark image.

When the dynamic projection system is used, the switching states or working powers of the second group of light sources and the third group of light sources can be adjusted, and the switching display or other dynamic projection of the triangular images and the exclamation marks is realized.

In an exemplary embodiment, referring to fig. 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 along a triangle. The dynamic projection system provided by the present embodiment can be used to project images as shown in fig. 16 to 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 part 21 having a triangular frame shape and a second light guide part 22 positioned at an inner periphery of the first light guide part 21. The light guide module 2 further includes a connection portion (not shown). The connecting portions are disposed on the sides of the light guide portions 21 to 22 facing away from the light source modules, and may have a plate shape, a bar shape, or the like.

The second light guide parts 22 may have a polygonal shape, for example, a triangular shape. Second light guide unit 22 may have other shapes. The light source module includes a first group of light sources 11 disposed along the first light guide part 21 and a second group of light sources 22 disposed at the second light guide part 22.

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

In an exemplary embodiment, the light guide part of the light guide module may have a concave polygonal shape in a vertical plane of the optical path. 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 irregularly shaped light guide portions 21 to 23. Illustratively, the shapes of these light guide portions 21 to 23 may be set according to strokes of, for example, chinese characters. Illustratively, the shape of the light guiding portion may be a concave polygon or a special shape for transmitting light to one radical, a radical, of a chinese character to be projected. As shown in fig. 23, the pattern region of the image generating element (not shown) in the present embodiment is the "red" character in chinese characters. Alternatively, the pattern area of the image generating element may be other characters. The light guide module 2 includes a connection portion (not shown) to connect the light guide portions 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 set of light sources 11-13 is adapted to emit light towards an end of the corresponding light guide 21-23 facing away from the picture elements.

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

The dynamic projection system provided by this embodiment can be used to project an image such as that shown in fig. 25. For example, light emitted from the first light guide part 21 carries an image of a downward arrow, and light emitted from the second light guide part 22 carries an image of an 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 steps of:

in step S101, an image generating element including a plurality of pattern regions is set.

Step S102, a light guide module including a plurality of light guide portions is provided. One end of the light guide part is arranged corresponding to the pattern area and is used for transmitting the light incident from the other end to one end in a total internal reflection manner.

Further, the step of providing a light guide module includes: a connecting portion for integrally connecting the plurality of light guide portions is provided.

Step S103 sets a plurality of sets of light sources whose switching states are individually controlled. Each set 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 light path of each group of light sources, wherein the pattern area is used for enabling the light emitted by the corresponding light guide part to carry image information.

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

The method provided by the application can be used for manufacturing a dynamic projection system. The pattern on the image-generating element may comprise any shape, such as circular, annular, triangular, rectangular, irregular, polygonal, etc. The pattern on the image generating element may be presented as a whole or may be divided into different pattern areas and then combined or presented separately. After being divided according to the pattern regions, each pattern region may have an outline and may have a distance therebetween. The light guide part may be disposed for each pattern region, and the shape of the light guide part in the cross section of the optical path may be equivalent to or slightly larger than the corresponding pattern region. The plurality of light guide parts are not interfered with each other, and then a plurality of groups of light sources in different arrangement modes can be arranged in a matched mode. The light sources are substantially uniformly arranged, and optionally, the light sources may be densely arranged or arranged at certain intervals according to the size and the light intensity of each light source.

Through the shape matching setting among the multiple groups of light sources, the light guide module and the image generation element, the dynamic projection system manufactured by the method can realize projection images with rich shapes, and realizes dynamic projection by controlling the light sources.

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

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

In some embodiments, the light directing portion is disposed between the plurality of sets of light sources and the image-generating element.

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

In some embodiments, the step of providing a light guide module comprises: a connecting part is arranged for connecting the plurality of light guide parts into a whole.

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

In some embodiments, the projection lens is used to project light carrying image information in magnification.

The above description is only a preferred embodiment of the present application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of protection covered by the present application is not limited to the embodiments with a specific combination of the features described above, but also covers other embodiments with any combination of the features described above or their equivalents without departing from the technical idea described above. For example, the above features and (but not limited to) features having similar functions in this application are mutually replaced to form the technical solution.

Claims

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.