Pattern variable projection lamp based on dimming film and vehicle

Abstract

The invention provides a pattern variable projection lamp based on a dimming film and a vehicle, and belongs to the technical field of projection equipment.The pattern variable projection lamp comprises a circuit board and a projection module, the projection module comprises a light source, an illumination lens set, a dimming film and an imaging lens set which are sequentially arranged in the optical axis direction, and the light source is arranged on the circuit board; light rays of the light source pass through the illumination lens group and then irradiate on the dimming film to form light spots; the dimming film comprises a transparent substrate and a dimming film arranged on the transparent substrate, and the dimming film comprises a plurality of dimming areas which are arranged in a light spot range and are different in position; the circuit board comprises a control element, the control element is electrically connected with each dimming area, the control element is configured to independently adjust the light transmittance of each dimming area, so that the dimming film can switch different film patterns, and the film patterns are formed by the light-transmitting dimming areas at different positions; the projection device has the advantages that the control element can accurately adjust the light transmittance of each dimming area, so that the preset projection pattern can be quickly presented or changed under the condition that the film does not need to be replaced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of projection equipment, and particularly relates to a pattern variable projection lamp based on a light-adjusting film and a vehicle. BACKGROUND

[0002] With the continuous development of the automobile industry and the continuous improvement of user demand, vehicles have not only existed as simple means of transportation, but have gradually evolved into an intelligent space integrating mobile office, entertainment and leisure, and personalized experience. Under this background, the design of the vehicle interior environment is increasingly valued, especially in terms of improving the sensory experience of the driver and passenger, the atmosphere lighting system has become an important part of the automotive interior design in recent years.

[0003] A projection lamp and a vehicle disclosed in publication CN118375871A specifically disclose that the projection lamp comprises a lens barrel (16), a light source (1), an illumination lens group (2), a film assembly and an imaging lens group are sequentially arranged in the lens barrel (16) along the optical axis direction, and the independent projection lamp is used for directly projecting a pattern, and the structure is relatively independent, flexible to install and has a wide application prospect.

[0004] However, in the above-mentioned projection lamp design, the pattern generation depends on a physical film. The film forms a fixed pattern through etching or printing process, and realizes projection imaging by relying on the difference in light transmittance. However, each film can only display a single static pattern, and if the pattern content needs to be changed, the film must be manually replaced, which is tedious and inefficient, and is especially not suitable for scenes that need to frequently switch pictures; moreover, since the film itself does not have the ability to dynamically change, it cannot realize dynamic light and shadow effects such as gradual change, flow, flicker and the like, which seriously restricts its application expansion in high-end vehicles or personalized customization scenarios. SUMMARY

[0005] The present application aims to solve the above-mentioned problems existing in the prior art, and proposes a projection lamp which can adjust the film pattern without replacing components.

[0006] The purpose of the present application can be achieved by the following technical solutions: a pattern variable projection lamp based on a dimming film, comprising a circuit board and a projection module, the projection module comprises a light source, an illumination lens group, a dimming film and an imaging lens group arranged in sequence along the optical axis direction, the light source is arranged on the circuit board, and the light of the light source is irradiated on the dimming film to form a light spot after passing through the illumination lens group; the dimming film comprises a transparent substrate and a dimming film arranged on the transparent substrate, the dimming film comprises a plurality of dimming areas arranged in different positions within the range of the light spot; the circuit board comprises a control element, wherein the control element is electrically connected with each dimming area, and the control element is configured to independently adjust the light transmittance of each dimming area, so that the dimming film can switch different film patterns, and the film pattern is formed by the light-transmitting dimming areas in different positions.

[0007] In the above-mentioned pattern variable projection lamp based on a dimming film, the dimming film comprises a first base film layer and a second base film layer, a first electrode layer and a second electrode layer are arranged between the first base film layer and the second base film layer, and a dimming layer is arranged between the first electrode layer and the second electrode layer.

[0008] In the above-mentioned pattern variable projection lamp based on a dimming film, the first electrode layer and / or the second electrode layer is divided into a plurality of mutually insulated independent conductive areas by etching, and each independent conductive area corresponds to a dimming area.

[0009] In the above-mentioned pattern variable projection lamp based on a dimming film, the dimming layer is PDLC (polymer dispersed liquid crystal), EC (electrochromic) or SPD (suspended particles); the first electrode layer and the second electrode layer are any one of ITO layer, AZO layer, ATO layer, IZO layer, GZO layer or LaNiO3 layer.

[0010] In the above-mentioned pattern variable projection lamp based on a dimming film, the control element is configured to output a time sequence control signal to each dimming area, and each dimming area dynamically adjusts its light transmittance according to the control signal in a preset time sequence, thereby forming a film pattern with time sequence change.

[0011] In the above-mentioned pattern variable projection lamp based on a dimming film, the film pattern presents one or more of wave type propagation, breathing type gradual change, path tracking and random flicker.

[0012] In the above-mentioned pattern variable projection lamp based on a dimming film, the transparent substrate is a glass substrate, one side of the dimming film is fixedly connected with the glass substrate, or both sides of the dimming film are fixedly provided with the glass substrate.

[0013] In the pattern-variable projection lamp based on the light-adjusting film, the light-adjusting film is fixedly bonded to the transparent substrate.

[0014] In the pattern-variable projection lamp based on the light-adjusting film, a transparent protective layer is arranged on the side of the light-adjusting film away from the light source.

[0015] A vehicle comprising the pattern-variable projection lamp based on the light-adjusting film.

[0016] Compared with the prior art, the control element can accurately adjust the light transmittance of each light-adjusting area, thereby quickly presenting or transforming the preset projection pattern without replacing the film, which is suitable for occasions requiring frequent changes in projection content. Not only does it improve the convenience and flexibility of operation, but it also makes dynamic light and shadow effects such as gradual change, flow, and flicker possible.

[0017] The light transmittance of each light-adjusting area can be independently regulated to achieve any transparency level adjustment between complete opacity and complete transparency, and the brightness of the sub-projection pattern corresponding to each light-adjusting area 401 can also be adjusted, which makes it possible to create projection patterns with complex light and shade changes, enhancing the expressiveness and visual impact of light and shadow. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic diagram of the three-dimensional structure of the projection lamp assembly;

[0019] Figure 2 is a schematic diagram of the sectional structure of Figure 1 ;

[0020] Figure 3 is a schematic diagram of the sectional structure of the light-adjusting film in Figure 1 ;

[0021] Figure 4 is a schematic diagram of the light-adjusting areas in one of the film patterns in a non-transparent state;

[0022] Figure 5A is a schematic diagram of the pattern generated after part of the light-adjusting areas in Figure 4 turn into a transparent state;

[0023] Figure 5B is a schematic diagram of the pattern generated after part of the light-adjusting areas in Figure 4 turn into a transparent state;

[0024] Figure 5C is a schematic diagram of the pattern generated after part of the light-adjusting areas in Figure 4 turn into a transparent state.

[0025] In the figure, there is a dimming film 100; a first base film layer 101; a second base film layer 102; a first electrode layer 103; a second electrode layer 104; a dimming layer 105; a transparent protective layer 106; a transparent substrate 107; a circuit board 200; a light source 201; an illumination lens group 300; a dimming film 400; a dimming area 401; and an imaging lens group 500. Detailed Implementation

[0026] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0027] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0028] like Figure 1 As shown in Figure 5c, a pattern-variable projection lamp based on a dimming film includes a circuit board 200 and a projection module. The projection module includes a light source 201, an illumination lens group 300, a dimming film 400, and an imaging lens group 500 arranged sequentially along the optical axis. The light source 201 is disposed on the circuit board 200. The light from the light source 201 passes through the illumination lens group 300 and then illuminates the dimming film 400 to form a light spot, i.e. Figure 4 The area enclosed by the center circle;

[0029] The dimming film 400 includes a transparent substrate 107 and a dimming film 100 disposed on the transparent substrate 107. The dimming film 100 includes a plurality of dimming areas 401 disposed within the light spot range and at different positions.

[0030] The circuit board 200 includes a control element, which is electrically connected to each dimming zone 401. The control element is configured to independently adjust the transmittance of each dimming zone 401, so that the dimming film 400 can switch different film patterns, which are formed by the light-transmitting dimming zones 401 at different positions.

[0031] In this embodiment, the control element can precisely adjust the light transmittance of each dimming zone 401, thereby quickly presenting or changing preset projection patterns without changing the film, adapting to occasions where the projection content needs to be frequently changed. This not only improves the convenience and flexibility of operation, but also makes dynamic light and shadow effects such as gradients, flow, and flickering possible.

[0032] The light transmittance of each dimming area 401 can be independently regulated, and any transparency level between complete opacity and complete transparency can be adjusted, and the brightness of the sub-projection pattern corresponding to each dimming area 401 can also be adjusted, which provides the possibility of creating a projection pattern with complex light and shade changes, and enhances the expression and visual impact of light and shadow.

[0033] The control element can be communicatively connected with the vehicle control system of the vehicle to accurately regulate the light transmittance of each dimming area 401. The user can easily select and switch the preset projection pattern or dynamic effect through the vehicle central control screen, voice assistant or other intelligent interaction methods.

[0034] The dimming film 100 includes a first base film layer 101 and a second base film layer 102, and a first electrode layer 103 and a second electrode layer 104 are arranged between the first base film layer 101 and the second base film layer 102, and a dimming layer 105 is arranged between the first electrode layer 103 and the second electrode layer 104.

[0035] Further limited, the first electrode layer 103 and / or the second electrode layer 104 is divided into a plurality of mutually insulated independent conductive areas by etching, and each independent conductive area corresponds to a dimming area 401. The etching processing scheme has high integration, and all functions are realized on one or more substrates, reducing the number of components and simplifying the system structure.

[0036] The dimming layer 105 is PDLC (Polymer Dispersed Liquid Crystal), EC (Electrochromic) or SPD (Suspended Particle); the first electrode layer 103 and the second electrode layer 104 are any one of ITO layer, AZO layer, ATO layer, IZO layer, GZO layer or LaNiO3 layer.

[0037] The dimming layer 105 can quickly respond to the control signal under the action of the electrode layer, realize accurate brightness adjustment of each dimming area 401, and provide basic guarantee for generating high-quality dynamic projection patterns. Moreover, by applying different voltage signals to the plurality of dimming areas 401 respectively, a variety of light and shade distribution patterns can be flexibly constructed to meet diversified projection needs, especially suitable for visual display scenarios that require dynamic changes.

[0038] The structure of the dimming film 100 can select different types of dimming materials and electrode combinations according to actual needs, has good process adaptability and functional expandability, and is suitable for a variety of projection application scenarios.

[0039] The transparent substrate 107 is a glass substrate, one side of the dimming film 100 is fixedly connected with the glass substrate, or both sides of the dimming film 100 are fixedly provided with the glass substrate.

[0040] It should be noted that by arranging the transparent substrate 107, on the one hand, the light modulation film 100 can be provided with good mechanical support, and the structural stability and flatness thereof can be enhanced, and optical distortion caused by deformation or vibration can be prevented; on the other hand, the transparent substrate 107 has excellent optical transmission performance and environmental resistance, which helps to improve the projection imaging quality and the long-term reliability of the system.

[0041] As shown in Figure 3 , as an optional solution, the light modulation film 100 is fixedly connected to the glass substrate on the side close to the light source 201, and as another optional solution, the light modulation film 100 is fixedly provided with glass substrates on both sides, and the light modulation film 100 can also be sealed and protected, which effectively isolates the influence of external environmental factors such as humidity and dust, thereby prolonging the service life thereof.

[0042] Preferably, the light modulation film 100 and the transparent substrate 107 are fixedly connected by an adhesive mode. Not only can the light modulation film 100 and the glass substrate have good structural stability, but also the support force can be effectively transmitted and the flatness of the optical interface can be maintained.

[0043] The side of the light modulation film 100 away from the light source 201 is provided with a transparent protective layer 106. The transparent protective layer 106 is mainly arranged to physically isolate and environmentally protect the light modulation film 100 and the related functional structures thereof, and can effectively prevent the influence of external dust, humidity, mechanical scratching and other factors on the optical performance and service life of the light modulation film 100.

[0044] A specific embodiment is shown in Figure 4 , the film pattern is configured to display a pattern of numerical changes; specifically, the light modulation film 100 includes eight light modulation areas 401 arranged in the light spot range and having different positions, and the control element can independently adjust whether each light modulation area 401 is transparent or not, as shown in Figure 5A , the control element can only control the upper right and lower right light modulation areas 401 to be transparent to form the number 1; as shown in Figure 5B , the control element can also only control the upper middle, upper right, middle, lower left and lower middle light modulation areas 401 to be transparent to form the number 2; as shown in Figure 5C , the control element can also only control the upper middle, upper right, middle, lower right and lower middle light modulation areas 401 to be transparent to form the number 3, and the remaining numbers are similar and will not be described herein.

[0045] This embodiment only shows an example of a dynamically changing pattern, and it can be understood that the example provided in this embodiment can be extended to other dynamically changing patterns. By changing the shape and / or number of the light modulation areas 401, a variety of combinations can be formed.

[0046] The light transmittance of each independent conductive area in the light modulation film 100 corresponding to the light modulation area 401 is dynamically regulated by the control element, and combined with the preset timing logic algorithm, various light and shadow effects with dynamic and rhythm can be realized.

[0047] For example:

[0048] Wave propagation: by adjusting the light transmittance state of adjacent light modulation areas 401 in turn, a visual effect similar to water wave diffusion is simulated, and the picture flow is enhanced;

[0049] Breathing gradient: simulate the "breathing" rhythm in a periodic and slow light and dark alternation manner, and create a warm and relaxed in-car atmosphere;

[0050] Path tracking: according to user settings or system trigger conditions, the light is lit along a specific trajectory in turn to realize the guiding, prompting or interactive function;

[0051] Random flicker: within a certain range, the brightness state of part of the light modulation areas 401 is switched irregularly to create interesting or artistic light and shadow performance.

[0052] The above-mentioned various timing change modes can be used alone or in combination, thereby greatly enriching the performance form and application scene of the projection pattern. Especially suitable for the realization of personalized atmosphere lighting, human-computer interaction prompting, scene linkage response and other functions, and improves the user's visual experience.

[0053] The existing light modulation film technology is generally used in laminated glass to change the visibility of the whole or part of the glass. In the present application, the light modulation film is applied to the projection lamp. Without changing the structure of the projection lamp, the projection lamp has the effect of changing the projection pattern, and unexpected technical effects are achieved.

[0054] It should be noted that in the present application, descriptions such as "first", "second", "one" and the like are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the technical features indicated or the number of the technical features indicated. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited. The terms "connection", "fixation" and the like should be broadly understood, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium, or the internal connection of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0055] In addition, the technical solutions among various embodiments of the present application can be combined with each other, but it must be based on that a person skilled in the art can realize, when the combination of the technical solutions appears contradictory or cannot be realized, it should be considered that the combination of the technical solutions does not exist, and is not within the protection scope required by the present application.

[0056] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. A pattern variable projection lamp based on a dimming film, characterized in that, The projection lamp comprises a circuit board (200) and a projection module, the projection module comprises a light source (201), an illumination lens group (300), a light-adjusting film (100) and an imaging lens group (500) arranged in sequence along the optical axis, the light source (201) is arranged on the circuit board (200), and the light of the light source (201) is irradiated on the light-adjusting film (100) to form a light spot after passing through the illumination lens group (300). The light-adjusting film (100) comprises a transparent substrate (107) and a light-adjusting film (100) arranged on the transparent substrate (107), the light-adjusting film (100) comprises a plurality of light-adjusting areas (401) arranged in the range of the light spot and having different positions. The circuit board (200) comprises a control element, the control element is electrically connected with each light-adjusting area (401), the control element is configured to independently adjust the light transmittance of each light-adjusting area (401), so that the light-adjusting film (100) can switch different film patterns formed by light-adjusting areas (401) having different positions and being transparent.

2. The pattern variable projection lamp based on dimming film according to claim 1, characterized in that, The light-adjusting film (100) comprises a first base film layer (101) and a second base film layer (102), a first electrode layer (103) and a second electrode layer (104) are arranged between the first base film layer (101) and the second base film layer (102), and a light-adjusting layer (105) is arranged between the first electrode layer (103) and the second electrode layer (104).

3. The pattern variable projection lamp based on dimming film according to claim 2, characterized in that, The first electrode layer (103) and / or the second electrode layer (104) are divided into a plurality of independent conductive areas by etching, and each independent conductive area corresponds to a light-adjusting area (401).

4. The pattern variable projection lamp based on light modulation film according to claim 2, characterized in that, The light-adjusting layer (105) is PDLC, EC or SPD; the first electrode layer (103) and the second electrode layer (104) are any one of ITO layer, AZO layer, ATO layer, IZO layer, GZO layer or LaNiO3 layer.

5. The pattern variable projection lamp based on dimming film according to claim 1, characterized in that, The control element is configured to output a time sequence control signal to each light-adjusting area (401), and each light-adjusting area (401) dynamically adjusts its light transmittance according to a preset time sequence in response to the control signal, thereby forming a film pattern with time sequence change.

6. The pattern variable projection light based on dimming film according to claim 5, characterized in that, The film pattern presents one or more of wave propagation, breathing gradient, path tracking and random flicker.

7. The pattern variable projection lamp based on dimming film according to claim 1, characterized in that, The transparent substrate (107) is a glass substrate, one side of the light-adjusting film (100) is fixedly connected with the glass substrate, or both sides of the light-adjusting film (100) are fixedly provided with the glass substrate.

8. The pattern variable projection lamp based on dimming film according to claim 1 or 7, characterized in that, The light-adjusting film (100) and the transparent substrate (107) are adhesively fixed.

9. The pattern variable projection light based on dimming film according to claim 1, characterized in that, The side of the light-adjusting film (100) away from the light source (201) is provided with a transparent protective layer (106).

10. A vehicle characterized by comprising: The projection lamp comprises a light-adjusting film-based pattern variable projection lamp according to any one of claims 1-9.

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