Optical trim for vehicle

Abstract

An optical trim (3) for a vehicle. The optical trim (3) comprises a substrate layer (31), the substrate layer (31) having a first surface (311) and a second surface (312) opposite to the first surface (311); a texture structure (331), carried on the first surface (311); and a plurality of optical microstructures (401, 402), carried on the second surface (312). The optical trim (3) is adapted to present a first display effect generated by the texture structure (331), or present a second display effect generated by the plurality of optical microstructures (401, 402), or superimpose the first display effect and the second display effect for presentation.

Description

Optical trim for a vehicle TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, and in particular to an optical trim for a vehicle. BACKGROUND

[0002] Some vehicles are provided with optical trims on interior parts (e.g. door panels, instrument panels, roofs, etc.) to display patterns on the interior parts as needed. Fig. 1 schematically shows an optical trim 1 in the prior art. As shown in Fig. 1, the optical trim 1 is made by fixing an existing decorative film set 13 and an existing light guide film 12 to two opposite surfaces of a transparent structure layer 11. The decorative film set 13 and the light guide film 12 each have patterns to enable the optical trim 1 to display the desired patterns as needed.

[0003] As also shown in Fig. 1, the existing decorative film set 13 includes a light- permeable base layer 131 and a modification layer 133 carried on the base layer 131. When the optical trim 1 displays the patterns on the light guide film 12, the light from the light guide film 12 needs to pass through the transparent structure layer 11 and the decorative film set 13 (including the base layer 131 and the modification layer 133) to be emitted from the optical trim 1. In this way, the light from the light guide film 12 travels a long distance and is scattered to a large extent, resulting in the patterns of the light guide film 12 displayed by the optical trim 1 being not very clear. SUMMARY

[0004] To solve the above technical problems, the present application provides an optical trim for a vehicle. The optical trim includes: a light-permeable base layer, the base layer including a first surface and a second surface opposite to the first surface; a light-permeable texture structure carried on the first surface; the texture structure being adapted to reflect first light from an environment away from the optical trim to generate a first display effect; and a plurality of light-permeable optical microstructures carried on the second surface; second light propagating in the base layer in a total reflection manner being changed in direction to be emitted from the optical trim to generate a second display effect after being incident on the optical microstructures; wherein the optical trim is adapted to present only the first display effect, or is adapted to present only the second display effect, or is adapted to present the first display effect and the second display effect superimposed.

[0005] In one embodiment, the optical trim includes a light-permeable texture structure layer disposed on the first surface, the texture structure being formed on the texture structure layer.

[0006] In one embodiment, the texture structure layer is a first photoresist layer.

[0007] In one embodiment, the first photoresist layer has a refractive index less than that of the base layer.

[0008] In one embodiment, the optical trinket further comprises a light-transmissive decorative layer, the decorative layer disposed on a side of the textured structure layer distal from the substrate layer.

[0009] In one embodiment, the decorative layer further comprises a light-transmissive pattern layer, the pattern layer directly attached to the textured structure.

[0010] In one embodiment, the decorative layer comprises a light-transmissive coating layer, the coating layer attached to the textured structure.

[0011] In one embodiment, the decorative layer further comprises a light-transmissive pattern layer, the pattern layer attached to the coating layer.

[0012] In one embodiment, the decorative layer is translucent.

[0013] In one embodiment, the decorative layer further comprises a light-transmissive color layer, the color layer disposed between any two adjacent layers of the textured structure layer, the coating layer, and the pattern layer.

[0014] In one embodiment, the optical trinket further comprises a first reflective layer, the first reflective layer disposed on a side of the decorative layer distal from the substrate layer.

[0015] In one embodiment, the optical trinket further comprises a transparent first protective layer, the first protective layer disposed on a side of the decorative layer distal from the substrate layer.

[0016] In one embodiment, the textured structure is formed on a first surface of the substrate layer.

[0017] In one embodiment, the optical trinket comprises a light-transmissive light guide layer disposed on the second surface, the optical microstructure formed in the light guide layer.

[0018] In one embodiment, the light guide layer comprises a first light guide layer made of a second photoresist; the optical microstructure comprises a first optical microstructure formed on the first light guide layer; the substrate layer and the first light guide layer form a combined layer; the second light rays are adapted to propagate within the combined layer in a total reflection manner, and the first optical microstructure is adapted to change a direction of the second light rays so that the second light rays exit the optical trinket.

[0019] In one embodiment, a difference between a refractive index of the second photoresist and a refractive index of the substrate layer is less than or equal to 0.05.

[0020] In one embodiment, the optical trinket further comprises a second reflective layer, the second reflective layer disposed on a side of the light guide layer distal from the substrate layer.

[0021] In one embodiment, the optical trinket further comprises a transparent second protective layer, the second protective layer disposed on a side of the light guide layer distal from the substrate layer.

[0022] In one embodiment, the optical trim includes a plurality of combination layers, which are stacked along a thickness direction of the optical trim.

[0023] In one embodiment, the light guide layer further includes a plurality of second light guide layers; the plurality of second light guide layers are stacked on a surface of the combination layer away from the substrate layer; the optical microstructure includes a second optical microstructure formed on each second light guide layer; each second light guide layer is adapted to propagate the second light in a total reflection manner, and the second optical microstructure is adapted to change a direction of the corresponding second light so as to make the second light exit the optical trim.

[0024] In one embodiment, the optical microstructure is formed on the second surface of the substrate layer.

[0025] In one embodiment, the optical trim further includes a light source, which is configured to provide the second light.

[0026] In one embodiment, the substrate layer includes at least one edge surface, at least a portion of the edge surface serving as an incident surface of the combination layer; the light source is arranged corresponding to the incident surface.

[0027] In one embodiment, the light source is arranged inside the substrate layer.

[0028] The optical trim for a vehicle according to the present application has the following advantages: According to the optical trim for a vehicle of the present application, the texture structure and the optical microstructure are respectively carried on two opposite surfaces of the substrate layer. Compared with the optical trim of the prior art, the optical trim of the present application eliminates the transparent structure layer. Thus, when the optical trim of the present application presents a pattern composed of optical microstructures, the propagation distance of the light from the optical microstructure is shortened, which reduces the scattering degree of the light, and thus the pattern composed of optical microstructures displayed by the optical trim is clearer and sharper. BRIEF DESCRIPTION OF DRAWINGS

[0029] The present application will be further described in the following detailed description with the aid of non-limiting examples of exemplary embodiments of the present application, with reference made to the accompanying drawings. The drawings are not drawn to scale.

[0030] FIG. 1 schematically shows an optical trim of the prior art.

[0031] FIG. 2 schematically shows a vehicle according to one embodiment of the present application.

[0032] FIG. 3 schematically shows an optical trim according to one embodiment of the present application, in which the light source is outside the substrate layer.

[0033] FIG. 4 schematically shows an optical trim according to another embodiment, in which the light source is inside the substrate layer.

[0034] Figure 5 schematically illustrates a use of the optical trinket of Figure 2.

[0035] Figure 6 schematically illustrates another use of the optical trinket of Figure 2.

[0036] Figures 7 and 8 schematically illustrate display effects of the optical trinket.

[0037] Figure 9 schematically illustrates a distribution of texture units according to one embodiment.

[0038] Figure 10 schematically illustrates a distribution of texture units according to another embodiment.

[0039] Figure 11 schematically illustrates a distribution of texture units according to another embodiment.

[0040] Figure 12 schematically illustrates a distribution of texture units according to another embodiment.

[0041] Figure 13 is a schematic illustration of a texture effect formed by a succession of the texture units of Figure 12.

[0042] Figure 14 is a beacon pattern presented by an optical trinket according to another embodiment.

[0043] Figure 15 schematically illustrates an optical trinket according to another embodiment.

[0044] Figures 16 and 17 schematically illustrate two embodiments of an optical trinket in which color layers are shown.

[0045] Figure 18 schematically illustrates an optical trinket according to another embodiment in which a first reflective layer is shown.

[0046] Figure 19 schematically illustrates an optical trinket according to another embodiment in which a first protective layer according to one embodiment is shown.

[0047] Figure 20 schematically illustrates an optical trinket according to another embodiment in which a first protective layer according to another embodiment is shown.

[0048] Figure 21 schematically illustrates a pattern of optical microstructures.

[0049] Figure 22 is a magnified view of section I of Figure 21.

[0050] Figure 23 schematically illustrates an optical trinket according to another embodiment in which a second reflective layer is shown.

[0051] Figure 24 schematically illustrates an optical trinket according to another embodiment in which a second protective layer according to one embodiment is shown.

[0052] Figure 25 schematically illustrates an optical article according to another embodiment, in which a second protective layer according to another embodiment is shown.

[0053] Figure 26 schematically illustrates an optical article according to another embodiment, in which a plurality of combined layers are shown.

[0054] Figure 27 schematically illustrates an optical article according to another embodiment, in which a plurality of second light guiding layers are shown.

[0055] Figures 28a to 28g schematically illustrate the display effect of the optical article shown in Figure 26.

[0056] Figure 29 schematically illustrates the manufacturing process of the optical article shown in Figure 3.

[0057] Figure 30 schematically illustrates the manufacturing process of the optical article shown in Figure 4.

[0058] List of reference signs 1 optical trim in prior art 11 transparent structure layer 12 light guide film 13 decorative film group 131 base material layer 133 finishing layer 2 vehicle 21 instrument panel 22 roof 23 door panel 3 optical trim for vehicle 301 first light 302 second light 303 observer 304 environmental light source 305 texture 306 pattern 31 base material layer 311 first surface 312 second surface 313 edge surface 33 texture structure layer 331 texture structure 332 texture unit 333 texture area 36 finishing layer 361 coating layer 362 pattern layer 363 color layer 37 first reflection layer 38 first protective layer 401 first optical microstructure 402 second optical microstructure 404 light source 408 circuit 405 combination layer 405a first combination layer 405b second combination layer 405c third combination layer 406 first adhesive 407 second adhesive 411 first light guide layer 412 second light guide layer 413 first pattern 414 second pattern 415 third pattern 42 second reflection layer 44 second protective layer D thickness direction of optical trim DETAILED DESCRIPTION

[0059] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application will be described clearly and completely below in combination with the embodiments of the present application and corresponding drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0060] In the present application, the words "outer" and "inner" are the directions relative to the observer, "outer" refers to the direction facing the observer, and "inner" refers to the direction away from the observer.

[0061] Figure 2 schematically shows a vehicle 2 according to one embodiment of the application. The vehicle 2 comprises a plurality of interior trim parts, such as an instrument panel 21, a roof lining 22 and door panels 23. An optical trim part 3 (for simplicity, hereinafter referred to as optical trim part 3) is provided on any one of these interior trim parts to cause the interior trim part to display a particular optical effect as desired.

[0062] The optical trim part 3 will be described hereinafter.

[0063] Figure 3 schematically shows the optical trim part 3 according to one embodiment of the application. As shown in Figure 3, the optical trim part 3 comprises a light-transmissive substrate layer 31. The substrate layer 31 comprises a first surface 311 and a second surface 312 opposite to the first surface 311. In one embodiment, the substrate layer 31 can be made of any one of transparent glass, transparent plastic, transparent film, and can be provided with color as desired. Alternatively, the substrate layer 31 can be made of transparent PC, or transparent PMMA, transparent polyethylene terephthalate (PET), transparent polyolefin (PO), transparent polyvinyl chloride (PVC), transparent ethylene-vinyl acetate copolymer (EVA), and other suitable transparent composite plastics.

[0064] The optical trim part 3 further comprises a texture structure layer 33 provided on the first surface 311, and a texture structure 331 is constructed on the texture structure layer 33. For example, the texture structure 331 is formed on a surface of the texture structure layer 33 away from the substrate layer 31. In this way, the texture structure 331 is carried on the first surface 311 of the substrate layer 31 through the texture structure layer 33. In one embodiment, the texture structure 331 can also be formed directly on the first surface 311 of the substrate layer 31, so that the texture structure layer is not needed. In the present application, the technical solution of the present application is described by way of example with the texture structure 331 formed on the texture structure layer 33.

[0065] The optical trim part 3 further comprises a first light guide layer 411 provided on the second surface 312. The first light guide layer 411 forms a combined layer 405 with the substrate layer 31. A plurality of first optical microstructures 401 are formed in the first light guide layer 411, and the first optical microstructures 401 combine to form a pattern (as shown in Figures 21 and 22). In this way, the first optical microstructures 401 are carried on the second surface 312 of the substrate layer 31 through the first light guide layer 411. In one embodiment, the plurality of first optical microstructures 401 can also be formed directly on the second surface 312 of the substrate layer 31, so that the first light guide layer is not needed. In the present application, the technical solution of the present application is described by way of example with the plurality of first optical microstructures 401 formed on the first light guide layer 411.

[0066] In using the optical decorative piece 3 in the manner shown in FIG. 5, the observer 303 and the ambient light source 304 are close to the texture structure layer 33 (for example, the optical decorative piece 3 is arranged with the texture structure layer 33 facing outward and the first light guide layer 411 facing inward). When only the first light 301 from the ambient light source 304 exists, the first light 301 is incident on the texture structure 331 of the texture structure layer 33, and the texture structure 331 reflects the first light 301 away from the optical decorative piece 3. The observer 303 can thus see that the optical decorative piece 3 exhibits a first display effect (for example, the texture 305 shown in FIG. 7) produced by the texture structure 331. When the first light 301 exists, the second light 302 exists in the combined layer 405 (the second light 302 propagates in the combined layer 405 formed by the substrate layer 31 and the first light guide layer 411 in the form of total reflection), at least part of the second light 302 is incident on the plurality of first optical microstructures 401, the direction is changed, and the second light 302 passes through the combined layer 405 and the texture structure layer 33 and exits the optical decorative piece 3. In this way, the observer 303 can see that the optical decorative piece 3 exhibits a first display effect and a second display effect (for example, the texture 305 and the pattern 306 shown in FIG. 8) produced by the plurality of first optical microstructures 401. When only the second light exists, the observer can see that the optical decorative piece 3 exhibits only the second display effect (for example, only the pattern 306 in FIG. 8 is displayed. It should be noted that the texture is also displayed in the range of the pattern 306). Thus, in using the optical decorative piece 3 of the present application, the optical decorative piece 3 can have a plurality of different display effects to meet the diversified needs of users.

[0067] Figure 6 schematically shows another use mode of the optical trim 3. As shown in Figure 6, the observer 303 and the ambient light source 304 are close to the first light guide layer 411 (for example, the optical trim 3 is arranged with the first light guide layer 411 facing outward and the textured structure layer 33 facing inward). When only the first light rays 301 from the ambient light source 304 exist, the first light rays 301 pass through the first light guide layer 411 and the substrate layer 31 to irradiate on the textured structure layer 33, and then the first light rays 301 are reflected by the textured structure 331 and pass through the substrate layer 31 and the first light guide layer 411 to exit the optical trim 3, so that the observer 303 sees the first display effect generated by the textured structure 331. When only the second light rays 302 propagating in the form of total reflection within the combined layer 405 exist, at least part of the second light rays 302 irradiate on the first optical microstructures 401 and then change direction to be directed toward the textured structure layer 33. Then, these second light rays 302 are reflected by the textured structure 331 and pass through the substrate layer 31 and the first light guide layer 411 to exit the optical trim 3, so that the observer 303 sees the second display effect generated by these first optical microstructures 401 (also, the texture is displayed within the range of the pattern as the second display effect). When both the first light rays 301 and the second light rays 302 exist, the observer 303 can see the optical trim 3 superimposedly present the first display effect and the second display effect. Thus, the optical trim 3 can be arranged with the first light guide layer 411 facing outward or the textured structure layer 33 facing outward as needed, which does not or substantially does not affect the display effect of the optical trim 3.

[0068] Moreover, in the optical trim 3 of the present application, the textured structure 331 and the first optical microstructures 401 are respectively carried on the two opposite surfaces of the substrate layer 31. In other words, the textured structure 331 and the first optical microstructures 401 are integrated on the same film (i.e., the substrate layer 31). Compared with the optical trim of the prior art, the optical trim 3 of the present application eliminates the transparent structure layer. When the optical trim 3 displays the second display effect, the propagation distance of the second light rays 302 is shortened, which reduces the scattering degree of the second light rays 302, and in turn makes the pattern 306 generated by the first optical microstructures 401 more sharp and clear. In addition, compared with the optical trim of the prior art, the thickness of the optical trim 3 of the present application is also smaller (for example, the thickness of the transparent structure layer 11 in the prior art can be about 0.6 mm, and the thickness of the optical trim 1 can be about 1 mm. The thickness of the optical trim 3 according to an embodiment of the present application can be about 0.3 mm). This facilitates the application of the optical trim 3 according to the present application in a narrow space, and does not significantly increase the thickness of the interior trim panel of the vehicle 2, thereby avoiding significantly reducing the passenger space in the vehicle 2.

[0069] In the present application, optical microstructure refers to a structure that affects the light transmission performance at the scale of visible light wavelength or sub-visible light wavelength. In one embodiment, the optical microstructure can be formed on the surface of the first light guide layer away from the substrate layer by various ways, for example, it can be formed by micro-nano imprinting, and it can also be formed by screen printing, etching, carving, etc. In other embodiments, the optical microstructure can also be formed at other positions within the first light guide layer, for example, close to the surface of the substrate layer. When using the optical ornament of the present application, the second light will propagate in the combined layer described above in the form of total reflection when it does not encounter the optical microstructure; after encountering the optical microstructure, the total reflection of the second light is destroyed, thereby emitting out of the combined layer and further emitting out of the optical ornament. These are well known to those skilled in the art, and will not be described here.

[0070] In the present application, the texture structure refers to a 3D microstructure at the micron level or even the nanometer level, such as micro V-shaped grooves, arc-shaped grooves, and other concave structure forms, or raised protruding structure forms. By using texture structures of different structure forms and / or sizes of various structure forms, a stereoscopic texture effect, a relief effect, etc. can be formed. The texture structure can be formed on at least one surface of the texture structure layer by transfer technology (for example, optical adhesive transfer or imprinting). In addition, depending on different needs, the texture structure can also be produced by mechanical processing or chemical etching or photolithography or other processes that can achieve the same result.

[0071] As shown in FIG. 9, the texture structure 331 includes a plurality of texture units 332. Each texture unit 332 is different from each other (as shown in FIG. 9), so that each texture unit 332 has a different reflection and refraction angle of the first light 301 irradiated onto the texture layer, so that the user will observe different texture effects at different viewing angles (such different texture effects include different textures presented, or in some specific viewing angles, the texture is not seen by the human eye). Thus, the first display effect of the optical ornament 3 also has multiple forms, which further improves the richness of the display effect of the optical ornament 3. As an example, the texture effect includes at least one of a wire drawing texture, a checkered texture, a gradient texture, a starry sky texture, a stone-like texture, a wood grain texture, a fabric texture, a landscape texture, a crystal texture, a lens texture, a three-dimensional relief, a word, a letter, a figure, a symbol, a number, a beacon (such as the beacon pattern in the form of a switch shown in FIG. 14), a trademark. It should be understood that the number and form of the texture units can be selected according to actual needs.

[0072] The plurality of texture units 332 can be arranged continuously. For example, as shown in FIGS. 9 and 10, four texture units 332 are arranged continuously adjacent to each other and form a texture region 333. It should be understood herein that "adjacent" means that the contour boundaries of the respective texture units are connected, overlapped or close to each other, and the lines forming the respective contour boundaries can be formed by texture structures or by ink printing. Although it is shown that the respective texture units occupy approximately the same area of the surface, the area of the respective texture units covering the surface can also be set to be different from each other as needed. In some embodiments, the plurality of texture units can also be arranged to be spaced apart, thereby forming a regular or irregular pattern. For example, as shown in FIG. 11, a plurality of texture units 332 having different texture structures and / or texture regions 333 are arranged dispersedly. In addition, as shown in FIG. 11, the areas of these texture units 332 and / or texture regions 333 can be the same or different. In this way, the form of the first display effect of the optical ornament 3 is more varied.

[0073] As an example, each of the texture units in FIGS. 9-11 is shown as being approximately rectangular in shape. Other suitable shapes of the texture units are possible, such as circular or other polygonal shapes, etc., depending on the environment to which they are applied. For example, in the embodiment shown in FIG. 12, the texture units 332 are shown as being approximately triangular in shape, and three texture units 332 form a substantially triangular texture region 333. In this way, the texture region 333 formed by a plurality of texture units having different texture structures presents different visual effects from different angles under the reflection and refraction of the first light, such as presenting a virtual chiaroscuro stereoscopic effect. When a plurality of texture regions 333 are arranged continuously adjacent to each other, as shown in FIG. 13, the first display effect of the optical ornament 3 presents the form of a stereoscopic relief, which enriches the visual experience of the viewer.

[0074] In one embodiment, the texture structure layer 33 is a first photoresist layer. For example, the first photoresist can be any one of a photocuring glue (UV glue), a thermosetting glue, an unsaturated polyester glue, an epoxy resin glue, a polyurethane glue, and a silicone glue. In one embodiment, the texture structure can be formed on one surface of the first photoresist layer by micro-nano imprinting, laser engraving, mechanical processing, hot pressing, chemical etching, photolithography, etc. After the texture structure is formed on the first photoresist layer, the first photoresist layer is cured (for example, the first photoresist layer is irradiated with ultraviolet light to cure the first photoresist layer), and the texture structure is fixed on the first photoresist layer. Even if the optical ornament is stretched or twisted, the texture structure will not be damaged or disappear. This facilitates the use of the optical ornament. In one embodiment, the texture structure 331 can be formed on any surface of the texture structure layer 33, that is, the texture structure 331 can be formed on the surface of the texture structure layer 33 facing the substrate layer 31 and / or the surface of the texture structure layer 33 facing away from the substrate layer 31.

[0075] In the case that the surface of the interior trim part on which the optical trim part is installed is curved, the optical trim part can also be curved to be shaped in a corresponding curved form. In some prior art optical trim parts, a base substrate layer (e.g., made of transparent PC) of a decorative film set and a light guide film (e.g., made of transparent PC) are bonded together by optical adhesive to form the optical trim part. However, when such an optical trim part is curved, defects (e.g., wrinkles or bubbles) can occur in the optical adhesive, or even the base substrate layer of the decorative film set and the light guide film can be separated from each other, which can result in poor display or damage of the optical trim part. In comparison with such prior art optical trim parts, in the optical trim part of the present application, the first photoresist forming the texture structure layer 33 is applied on the first surface of the base substrate layer 31 and is not used to bond the two film layers, so that when the optical trim part is curved, the texture structure layer 33 will not be separated from the base substrate layer 31, and no defects will occur in the texture structure layer 33. This also makes the optical trim part 3 of the present application have good display effect.

[0076] Optionally, the thickness of the texture structure layer 33 can be less than or equal to 0.1 mm, which helps to reduce the thickness of the optical trim part 3. In some embodiments, the texture structure layer 33 can itself have a color, so that the first display effect of the optical trim part 3 has a color.

[0077] The refractive index of the first photoresist layer is less than the refractive index of the base substrate layer 31. In this way, when the second light 302 reaches the interface between the base substrate layer 31 and the first photoresist layer (or the texture structure layer 33) from the base substrate layer 31, total reflection of the second light 302 can occur, so that the second light 302 propagates in the combined layer 405 in a total reflection manner. In one embodiment, the difference between the refractive index of the first photoresist layer and the refractive index of the base substrate layer 31 is greater than or equal to 0.08. For example, the refractive index of the first photoresist layer is 1.47, and the refractive index of the base substrate layer 31 is 1.59.

[0078] As also shown in FIG. 3, the optical trim part 3 further includes a light-transmissive decoration layer 36. The decoration layer 36 is disposed on the side of the texture structure layer 33 away from the base substrate layer 31. The decoration layer 36 can have a color, a pattern, a metallic luster, etc., to further enrich the display effect of the optical trim part 3.

[0079] As shown in FIG. 3, the decoration layer 36 further includes a light- permeable film layer 361. The film layer 361 is attached to the texture structure 331 as a high-reflective film layer. Alternatively, the film layer 361 can be a physical vapor deposition (PVD) film layer formed by a vacuum coating technique such as evaporation coating or magnetron sputtering coating, and can be a single layer or a stack of multiple layers, and the film thickness can be 10-50 microns. The film layer includes a metallic film layer and a non-metallic film layer, and alternatively, the film layer can be a metallic film layer material such as indium or tin, or a non-metallic film layer material such as silicon dioxide. The film layer generally has a metallic luster, thereby increasing the luster of the optical accessory 3 and providing a metallic-looking technical appearance. In some embodiments, the film layer can also have a color. In addition, by providing the film layer 361, the texture structure 331 will produce light and dark changes when the optical accessory 3 is viewed from different angles, which helps to enhance the texture effect of the optical accessory 3 and further enriches the display effect of the optical accessory 3.

[0080] As shown in FIG. 3, the decoration layer 36 further includes a light- permeable film layer 361. The film layer 361 is attached to the texture structure 331 as a high-reflective film layer. Alternatively, the film layer 361 can be a physical vapor deposition (PVD) film layer formed by a vacuum coating technique such as evaporation coating or magnetron sputtering coating, and can be a single layer or a stack of multiple layers, and the film thickness can be 10-50 microns. The film layer includes a metallic film layer and a non-metallic film layer, and alternatively, the film layer can be a metallic film layer material such as indium or tin, or a non-metallic film layer material such as silicon dioxide. The film layer generally has a metallic luster, thereby increasing the luster of the optical accessory 3 and providing a metallic-looking technical appearance. In some embodiments, the film layer can also have a color. In addition, by providing the film layer 361, the texture structure 331 will produce light and dark changes when the optical accessory 3 is viewed from different angles, which helps to enhance the texture effect of the optical accessory 3 and further enriches the display effect of the optical accessory 3.

[0081] In another embodiment of the optical accessory 3, as shown in FIG. 15, the pattern layer 362 is directly attached to the texture structure layer 314, and the film layer 361 is attached to the pattern layer 362.

[0082] In one embodiment, the finishing layer 36 is translucent. In the case shown in Fig. 5, the optical trim part 3 is arranged with the first light guide layer 411 facing inwards (e.g. towards the interior trim part) and the observer 303 is close to the texture structure layer 33. The coating layer 361 and / or the pattern layer 362 blocks the light from the structure (e.g. the interior trim part) inside the optical trim part 3, and the first light guide layer 411 also blocks the light from the structure inside the optical trim part 3, which makes the observer unable or hardly able to see the structure inside the optical trim part 3 (i.e. the structure inside the optical trim part 3 is hidden), thereby improving the aesthetic appearance of the vehicle 2. In the case shown in Fig. 6, the optical trim part 3 is arranged with the texture structure layer 33 facing inwards and the observer 303 is close to the first light guide layer 411. In this case, the coating layer 361 and / or the pattern layer 362, and the first light guide layer 411 still block the light from the structure inside the optical trim part 3, which makes the structure inside the optical trim part 3 hidden. In one embodiment, the light transmittance of the coating layer 361 and / or the pattern layer 362 is between 5% and 20%.

[0083] As mentioned above, the first display effect of the optical trim part 3 can have a color effect by the color properties of the substrate layer and / or the texture structure layer and / or the coating layer and / or the pattern layer itself. In some embodiments, the color effect can also be obtained by a separate color layer. Alternatively, the color layer can be attached between any two adjacent layers of the texture structure layer, the coating layer, the pattern layer.

[0084] In the embodiment of the optical trim part 3 shown in Fig. 16, the finishing layer 36 comprises a light-transmissive color layer 363. The color layer 363 is attached to the surface of the texture structure layer 33 facing away from the substrate layer 31, for example sandwiched between the texture structure layer 33 and the coating layer 361. In the embodiment of the optical trim part 3 shown in Fig. 17, the color layer 363 is sandwiched between the coating layer 361 and the pattern layer 362. In this way, the color effect can be directly visible outside the optical trim part 3. The color layer can be a single film or coating layer or stacked by multiple film layers, and can be a single color (e.g. blue, green, dark green, etc.) or multiple colors by printing or offset printing technology, or can be a gradient color, for example, gradually transition from white to green, or gradually transition from gray to color (e.g. green, blue, etc.) and then to white, etc., thereby adjusting the color depth of the texture structure. For example, the color layer can be selected as an ink layer, and the thickness can be 1-100 microns, preferably 10-50 microns. By providing the color layer 363, the optical trim part 3 can have a bright color appearance effect, and in combination with the texture structure layer 33 and / or the coating layer 361 and / or the pattern layer 362, the optical trim part 3 can present a more rich display effect.

[0085] Figure 18 schematically shows an optical decoration 3 according to another embodiment. As shown in Figure 18, the optical decoration 3 further comprises a first reflective layer 37. The first reflective layer 37 is disposed on the side of the decoration layer 36 away from the substrate layer 31. For example, in the embodiment shown in Figure 18, the decoration layer 36 comprises a film layer 361 attached to the texture layer 33 and a pattern layer 362 attached to the film layer 361. The first reflective layer 37 is then disposed on the surface of the pattern layer 362 away from the film layer 361. In use of the optical decoration 3 (see Figure 6), the first reflective layer 37 reflects the light leaking from the decoration layer 36 towards the first reflective layer 37, and the light eventually also exits the optical decoration 3 as the first light rays 301 and / or the second light rays 302. In this way, the first display effect and / or the second display effect of the optical decoration 3 seen by the observer 303 is brighter and clearer.

[0086] In one embodiment, the first reflective layer 37 can be a reflective film piece attached to the surface of the pattern layer 362 away from the substrate layer 31. In other embodiments, the first reflective layer can also be formed on the surface of the internal decoration corresponding to the optical decoration 3. For example, a reflective material is disposed on the surface of the internal decoration to form the first reflective layer. The reflective material can be reflective ink, high-reflectivity white paint, etc., and appropriate reflective material can be selected according to the final brightness requirement of the display effect of the optical decoration 3, which is not limited herein. In one embodiment, the first reflective layer can be formed on the surface of the internal decoration by PVD, spraying or other appropriate process, which is not limited herein. It should be understood that in the case that the surface of the internal decoration itself has good reflective performance (for example, in the case that the internal decoration is white), the surface of the internal decoration can also serve as the first reflective layer. In this case, the optical decoration 3 does not need to be additionally provided with the first reflective layer.

[0087] In the embodiment of the optical decoration shown in Figure 19, the optical decoration 3 further comprises a transparent first protective layer 38, and the first protective layer 38 is disposed on the side of the decoration layer 36 away from the substrate layer 31. For example, the decoration layer 36 comprises a film layer 361 attached to the texture layer 33 and a pattern layer 362 attached to the film layer 361; the first protective layer 38 is disposed on the surface of the pattern layer 362 away from the film layer 361. In this case, the optical decoration 3 can be used in the manner shown in Figure 5, and the first protective layer 38 serves as the outer surface of the optical decoration 3 to provide good use durability and reliability for the optical decoration 3.

[0088] In one embodiment, the first protective layer 38 is a hard coating layer formed on the pattern layer 362 (as shown in FIG. 19). For example, the material of the hard coating layer can be polyurethane paint, acrylic paint, fluorocarbon paint, UV curing glue, etc., and can be disposed on the pattern layer 362 by spraying, rolling, or other processes. The thickness of the hard coating layer is in the order of microns or nanometers. In other embodiments, the first protective layer 38 can also be a transparent hard cover plate (as shown in FIG. 20). It should be understood that the hard cover plate shown in FIG. 20 can also not be a component of the optical ornament 3, but a component independent of the optical ornament 3.

[0089] As shown in FIG. 3 and described above, the substrate layer 31 and the first light guide layer 411 form a combined layer 405, and the second light 302 propagates in the combined layer 405 by total reflection when not encountering the first optical microstructure 401 (as shown in FIGS. 5 and 6). In the case where the thickness of the first light guide layer 411 is small (for example, the thickness of the first light guide layer 411 is less than or equal to 0.1 mm), it is difficult to guide the second light 302 into the first light guide layer 411 or the utilization rate of the second light 302 is low. In the embodiment shown in FIG. 3 of the present application, the thickness of the combined layer 405 formed by the substrate layer 31 and the first light guide layer 411 is large (for example, can be 0.4 mm or more), so that the second light 302 can be conveniently guided into the combined layer 405, thereby improving the utilization rate of the second light 302. It should be understood that in the case where the thickness of the first light guide layer is appropriate (for example, the thickness is 0.4 mm), the second light can also be guided into the first light guide layer. For simplicity, in the present application, the technical solution of the present application is described by taking the total reflection propagation of the second light 302 in the combined layer 405 as an example.

[0090] The optical ornament 3 also includes a light source 404 for providing the second light 302 propagating in the combined layer 405. In one embodiment, as shown in FIG. 3, the substrate layer 31 includes at least one edge surface 313, at least part of the edge surface 313 serving as an incident surface of the combined layer 405. The light source 404 is disposed outside the substrate layer 31 and corresponds to the incident surface. In this way, the combined layer 405 is in the form of a side-in backlight, which helps to reduce the thickness of the optical ornament 3.

[0091] In the embodiment of the optical ornament 3 shown in FIG. 4, the light source 404 is disposed inside the substrate layer 31. In this way, the structure of the optical ornament 3 is more compact, and when the optical ornament 3 is used, there is no need to provide mounting space for the light source 404, which facilitates the use of the optical ornament 3 in a small space. It should be noted that in the embodiment shown in FIG. 4, the second light emitted by the light source 404 still propagates in the combined layer 405 by total reflection before encountering the first optical microstructure 401.

[0092] In one embodiment, the light source 404 is an LED. The volume of the LED is small, and in the embodiment shown in FIG. 3, the LED can be conveniently aligned with the incident surface of the substrate layer 31; in the embodiment shown in FIG. 4, the LED can be conveniently disposed inside the substrate layer 31. In one embodiment, in the embodiment shown in FIG. 4, the LED can be integrated in the substrate layer 31 by an in-mold electronics process. The in-mold electronics process is well known to those skilled in the art, and will not be described here. In addition, in the embodiment shown in FIG. 4, there is also disposed on the substrate layer 31 a circuit 408 for powering the LED, which can be disposed by screen printing or the like. For simplicity, the technical solution of the present application will be described in the optical ornament shown in FIG. 3.

[0093] In addition, the lighting and extinguishing of the LED is convenient to control, so as to make the optical ornament 3 display a special display effect as required. In one embodiment, the light source 404 (or LED) can emit colored second light, which helps the optical ornament 3 to further present a special display effect. In other embodiments, the light source 404 can also be a laser source.

[0094] In one embodiment, the first light guide layer 411 is made of a second photoresist. The first optical microstructure 401 is formed on the surface of the first light guide layer 411 away from the substrate layer 31. Similar to the first photoresist layer and the texture structure formed on the first photoresist layer described above, the first optical microstructure 401 can also be formed on the surface of the first light guide layer 411 away from the substrate layer 31 by micro-nano imprinting, laser engraving, mechanical processing, hot pressing, chemical etching, lithography or the like. In addition, in the prior art, the light guide film includes a substrate, an optical microstructure formed on the surface of the substrate, and a nano paste filled in the optical microstructure. When the light guide film is stretched or bent, the nano paste is used to keep the optical microstructure from being damaged or disappearing. Compared with the light guide film in the prior art, in the present application, after the first optical microstructure 401 is formed on the first light guide layer 411, the second photoresist is cured (for example, using ultraviolet light to irradiate to cure the second photoresist), and the first optical microstructure 401 is fixed on the surface of the first light guide layer 411, and does not need to be filled with a nano paste. When the optical ornament 3 is stretched or bent, the first optical microstructure 401 formed on the first light guide layer 411 will not be damaged or disappear. Thus, the manufacturing of the optical ornament 3 of the present application is simplified, and the cost is reduced.

[0095] Similar to the first photoresist layer in which the texture structure layer 33 is formed and which is not prone to defects and separation from the substrate layer 31, when the optical ornament 3 is bent, the second photoresist in which the first light guide layer 411 is formed is also not prone to defects and separation from the substrate layer 31. This also makes the optical ornament 3 of the present application have a good display effect.

[0096] In one embodiment, the difference between the refractive index of the second photoresist and the refractive index of the substrate layer 31 is less than or equal to 0.05. In this way, the second light rays 302 can propagate in the combined layer 405 of the substrate layer 31 and the first light guide layer 411 in a total reflection manner until they encounter the first optical microstructure 401. Preferably, the refractive index of the second photoresist is equal to the refractive index of the substrate layer 31. In one specific embodiment, the refractive index of the second photoresist is 1.55.

[0097] In the embodiment of the optical accessory 3 shown in FIG. 23, the optical accessory 3 further includes a second reflective layer 42, and the second reflective layer 42 is disposed on the surface of the first light guide layer 411 away from the substrate layer 31. In using such an optical accessory 3 (refer to FIG. 5), the second reflective layer 42 will reflect the light leakage generated at the first optical microstructure 401 towards the second reflective layer 42, and these light rays will eventually also exit the optical accessory 3 as the second light rays 302. In this way, the second display effect of the optical accessory 3 seen by the observer 303 is brighter and clearer.

[0098] Similar to the first reflective layer 37, the second reflective layer 42 can be a layer of reflective film attached on the surface of the first light guide layer 411 away from the substrate layer 31. In other embodiments, the second reflective layer can also be formed on the surface of the internal accessory corresponding to the optical accessory 3. For example, a reflective material is disposed on the surface of the internal accessory to achieve this. It should be understood that in the case where the surface of the internal accessory itself has good reflective performance (for example, in the case where the internal accessory is white), the surface of the internal accessory can also serve as the second reflective layer. In this case, the optical accessory 3 does not need to be additionally configured with the second reflective layer.

[0099] In the embodiment of the optical accessory 3 shown in FIG. 24, the optical accessory 3 further includes a transparent second protective layer 44, and the second protective layer 44 is on the side of the first light guide layer 411 away from the substrate layer 31. For example, the second protective layer 44 is disposed on the surface of the first light guide layer 411 away from the substrate layer 31. In this case, the optical accessory 3 can be used in the manner shown in FIG. 6, and the second protective layer 44 serves as the outer surface of the optical accessory 3 to provide good use durability and reliability for the optical accessory 3.

[0100] In one embodiment, the second protective layer 44 is a hard coating formed on the first light guide layer 411 (as shown in FIG. 24). For example, the material of the hard coating can be polyurethane paint, acrylic paint, fluorocarbon paint, UV-cured glue, etc., and can be disposed on the first light guide layer 411 by spraying, rolling, etc. The thickness of the second protective layer 44 is in the order of microns or nanometers. In other embodiments, the second protective layer 44 can also be a transparent hard cover (as shown in FIG. 25). Similarly, the hard cover shown in FIG. 25 can not be a component of the optical ornament 3, but a component independent of the optical ornament 3.

[0101] In the embodiment of the optical ornament 3 shown in FIG. 26, the optical ornament 3 includes a plurality of combined layers (e.g., first combined layer 405a, second combined layer 405b, and third combined layer 405c) stacked along the thickness direction D of the optical ornament 3. According to this structure, in the optical ornament 3, there are a plurality of first light guide layers 411 (e.g., three), and these first light guide layers 411 are stacked along the thickness direction D of the optical ornament 3. In manufacturing the optical ornament 3, the first light guide layer 411 is first disposed on the second surface 312 of each substrate layer 31 to form the combined layer 405 described above. Then, these combined layers are stacked together. It should be noted that the plurality of first optical microstructures on each first light guide layer are combined into a pattern, and these patterns can be the same as each other, or some patterns can be different from the rest.

[0102] In one embodiment, a first adhesive layer 406 is disposed between adjacent combined layers to bond these combined layers together. For example, the first adhesive layer 406 can be any one of photoresist, hot melt glue, water-based glue, etc. The first adhesive layer 406 can prevent light from leaking between adjacent combined layers, which can be achieved by selecting an adhesive with an appropriate refractive index, which will not be described here. Of course, those skilled in the art can also tightly adhere these combined layers together by other means according to actual conditions, such as by laser welding, which will not be limited here.

[0103] As also shown in FIG. 26, an independent light source 404 is provided for each combined layer, and each light source 404 can be independently controlled. In this way, the light source of any one combined layer can be turned on as needed to make the optical ornament 3 display the pattern on the first light guide layer of that combined layer. The light sources of any two or more combined layers can also be turned on simultaneously as needed to make the optical ornament 3 display the patterns of the first light guide layers of these combined layers superimposed. The light sources of two or more combined layers can also be turned on or off according to an appropriate timing control to make the corresponding combined layers turn on or off according to the timing control, so that the optical ornament 3 displays a dynamic pattern. This further enriches the display effects presented by the optical ornament 3. The control mode of the light sources is easily implemented by those skilled in the art, which will not be described here.

[0104] In the embodiment of the optical trinket 3 shown in FIG. 27, the optical trinket 3 includes a combination layer 405 and a plurality of second light guide layers 412 (e.g., two). These second light guide layers 412 are laminated on the surface of the combination layer 405 away from the substrate layer 31. On each second light guide layer 412, a second optical microstructure 402 is formed. Similar to the combination layer 405, a light source 404 can be provided for each second light guide layer 412. The second light rays emitted by the light source 404 propagate within the corresponding second light guide layer by total reflection and change direction after encountering the second optical microstructure 402, eventually also exiting the optical trinket 3, so that the observer 303 sees the pattern formed by the second optical microstructure 402. The plurality of second optical microstructures on each second light guide layer combine into a pattern, and these patterns can be the same as each other or some of the patterns can be different from the rest of the patterns.

[0105] In addition, similar to the optical trinket shown in FIG. 26, in the optical trinket shown in FIG. 27, each light source 404 can be independently controlled to cause the optical trinket to display the desired pattern as needed.

[0106] Depending on the actual situation, the material of the second light guide layer 412 is the same as or different from the material of the substrate layer 31. In some embodiments, the second optical microstructures 402 can also be filled with a suitable material to protect the second optical microstructures.

[0107] Similar to the optical trinket 3 shown in FIG. 26, in the optical trinket 3 shown in FIG. 27, a second adhesive layer 407 is provided between the combination layer 405 and the corresponding second light guide layer 412 and between adjacent second light guide layers 412 to bond the combination layer 405 and the second light guide layers 412 together. The second adhesive layer 407 can prevent light from leaking between adjacent layers and does not affect the function of the second optical microstructures, which can be achieved by selecting a second adhesive with a suitable refractive index, which will not be described here again.

[0108] The display effects of the plurality of combination layers 405 are described below with the optical accessory 3 shown in FIG. 26 as an example. As shown in FIGS. 28a-28g, when only the first combination layer 405a is lighted, the optical accessory 3 displays a first pattern 413 on the first combination layer 405a (as shown in FIG. 28a). When only the second combination layer 405b is lighted, the optical accessory 3 displays a second pattern 414 on the second combination layer 405b (as shown in FIG. 28b). When only the third combination layer 405c is lighted, the optical accessory 3 displays a third pattern 415 on the third combination layer 405c (as shown in FIG. 28c). When the first combination layer 405a and the second combination layer 405b are lighted simultaneously, the optical accessory 3 displays the first pattern 413 and the second pattern 414 superimposedly (as shown in FIG. 28d). When the first combination layer 405a and the third combination layer 405c are lighted simultaneously, the optical accessory 3 displays the first pattern 413 and the third pattern 415 superimposedly (as shown in FIG. 28e). When the second combination layer 405b and the third combination layer 405c are lighted simultaneously, the optical accessory 3 displays the second pattern 414 and the third pattern 415 simultaneously (as shown in FIG. 28f). When the first combination layer 405a, the second combination layer 405b, and the third combination layer 405c are lighted simultaneously, the optical accessory 3 displays the first pattern 413, the second pattern 414, and the third pattern 415 superimposedly (as shown in FIG. 28g). When the first combination layer 405a, the second combination layer 405b, and the third combination layer 405c are lighted in a cycle, the optical accessory 3 displays the first pattern 413, the second pattern 414, and the third pattern 415 in a cycle, so that the optical accessory 3 presents a dynamic pattern display effect.

[0109] FIG. 29 schematically shows a manufacturing method of the optical accessory 3 shown in FIG. 3. The manufacturing method comprises the following steps.

[0110] Step one: a base material layer is provided first. In an embodiment, the raw material can be formed into a base material layer in the form of a roll by a film extrusion process. In the case where the base material layer is larger than a preset size, the base material layer can also be pre-cut.

[0111] Step two: a first texture structure layer is arranged on the first surface of the base material layer, and a texture structure is formed on the first texture structure layer. Depending on actual conditions, the texture structure can also be coated with a suitable material to protect the texture structure.

[0112] Step three: a plating layer is formed on the first texture structure layer.

[0113] Step four: a pattern layer is formed on the plating layer.

[0114] Step five: disposing a first light guide layer on the second surface of the substrate layer, and forming a first optical microstructure on the first light guide layer. Depending on the actual situation, the first optical microstructure can also be coated with a suitable material to protect the first optical microstructure. At this point, the optical ornament has been pre-formed.

[0115] Step six: punching the pre-formed optical ornament to the desired size.

[0116] Step seven: configuring a light source for the pre-formed optical ornament. At this point, the manufacturing of the optical ornament is completed.

[0117] It should be understood that in the preparation of the optical ornament shown in FIG. 26, step five can be repeated multiple times to manufacture a multi-layered combined layer.

[0118] It should also be understood that in the manufacturing method of the optical ornament 3 shown in FIG. 29, the order of some steps can also be adjusted according to the actual situation.

[0119] FIG. 30 schematically shows a manufacturing method of the optical ornament 3 shown in FIG. 4. The manufacturing method includes the following steps.

[0120] Step one: first provide a base film. The base film has opposite first and second surfaces. In one embodiment, the raw material can be formed into a roll-shaped base film by a film extrusion process. In the case where the base film is larger than the preset size, the base film is also pre-cut.

[0121] Step two: disposing a first texture structure layer on the first surface of the base film, and forming a texture structure on the first texture structure layer. Depending on the actual situation, the texture structure can also be micro-nano coated with a suitable material to protect the texture structure.

[0122] Step three: disposing a light source and a circuit for powering the light source on the second surface of the base film.

[0123] Step four: forming a plating layer on the first texture structure layer.

[0124] Step five: forming a pattern layer on the plating layer.

[0125] Step six: punching the base film to the desired size.

[0126] Step seven: disposing a light-transmitting material on the second surface of the base film, and the light-transmitting material is formed into a substrate layer together with the base film. In one embodiment, this process can be achieved by an in-mold electronics process, so that the light source and the circuit are inside the substrate layer. It should be noted that the formed substrate layer has opposite first and second surfaces.

[0127] Step eight: disposing a first light guide layer on the second surface of the substrate layer, and forming a first optical microstructure on the first light guide layer. According to actual conditions, the first optical microstructure can also be micro-nano coated with appropriate materials to protect the first optical microstructure. At this point, the manufacturing of the optical ornament is completed.

[0128] It should be understood that step eight can also be repeated multiple times to manufacture an optical ornament with a combination layer of multiple layers of stacking.

[0129] It should also be understood that in the manufacturing method for manufacturing the optical ornament 3 shown in FIG. 30, the order of some steps can be adjusted according to actual conditions. For example, step three can be implemented first, and then step two can be implemented.

[0130] It should be noted that the present application (e.g., inventive concept, etc.) has been described in the specification of the present patent document and / or illustrated in the drawings according to exemplary embodiments; the embodiments of the present application are presented only by way of example, and are not intended as a limitation on the scope of the present application. The structure and / or arrangement of the elements of the inventive concept as described in the specification and / or illustrated in the drawings is only illustrative. Although exemplary embodiments of the present application have been described in detail in the present patent document, it is easily understood by those skilled in the art that equivalents, modifications, variations, etc. of the subject matter of the exemplary embodiments and alternative embodiments are possible and are considered to be within the scope of the present application; all such subject matter (e.g., modifications, variations, embodiments, combinations, equivalents, etc.) are intended to be included within the scope of the present application. It should also be noted that various / other modifications, variations, alternatives, equivalents, changes, omissions, etc. can be made in the configuration and / or arrangement of the exemplary embodiments (e.g., in terms of concepts, designs, structures, devices, forms, assemblies, constructions, means, functions, systems, processes / methods, steps, order of process / method steps, operations, operating conditions, performances, materials, compositions, combinations, etc.) without departing from the scope of the present application; all such subject matter (e.g., modifications, variations, embodiments, combinations, equivalents, etc.) are intended to be included within the scope of the present application. The scope of the present application is not intended to be limited to the subject matter (e.g., details, structures, functions, materials, behaviors, steps, order, systems, results, etc.) described in the specification and / or drawings of the present patent document. It is considered that the claims of the present patent document will be properly interpreted to cover the full scope of the subject matter of the present application (e.g., including any and all such modifications, variations, embodiments, combinations, equivalents, etc.); it should be understood that the terms used in the present patent document are intended to provide a description of the subject matter of the exemplary embodiments, and not as a limitation on the scope of the present application.

[0131] It is also important to note that the present application can comprise, among other technical matters (e.g., embodied and / or integrated in example embodiments, modifications, variations, combinations, equivalents, etc.), conventional technology, or can comprise any other applicable technology (now and / or future), with the ability to perform the functions and processes / operations described in the specification and / or illustrated in the figures. All such technology (e.g., embodied in example embodiments, modifications, variations, combinations, equivalents, etc.) is considered to be within the scope of the present application of this patent document.

Claims

1. An optical trim for a vehicle, characterized by, The optical accessory comprises: a light-transmissive substrate layer comprising a first surface and a second surface opposite to the first surface; a light-transmissive texture structure carried on the first surface; the texture structure is adapted to reflect first light from the environment away from the optical accessory to generate a first display effect; and a plurality of light-transmissive optical microstructures carried on the second surface; second light propagating in the substrate layer in a total reflection manner changes direction after irradiating on the optical microstructures to exit the optical accessory to generate a second display effect; wherein the optical accessory is adapted to present only the first display effect, or is adapted to present only the second display effect, or is adapted to present the first display effect and the second display effect superimposed.

2. The optical accessory of claim 1, wherein, The optical accessory comprises a light-transmissive texture structure layer disposed on the first surface, and the texture structure is formed on the texture structure layer.

3. The optical accessory of claim 2, wherein, The texture structure layer is a first photoresist layer.

4. The optical accessory of claim 3, wherein, The refractive index of the first photoresist layer is less than the refractive index of the substrate layer.

5. The optical accessory of claim 2, wherein, The optical accessory further comprises a light-transmissive decoration layer disposed on a side of the texture structure layer away from the substrate layer.

6. The optical accessory of claim 5, wherein, The decoration layer further comprises a light-transmissive pattern layer directly attached to the texture structure.

7. The optical accessory of claim 5, wherein, The decoration layer comprises a light-transmissive coating layer attached to the texture structure.

8. The optical accessory of claim 7, wherein, The decoration layer further comprises a light-transmissive pattern layer attached to the coating layer.

9. The optical accessory of claim 5, wherein, The decoration layer is translucent.

10. The optical accessory of claim 8, wherein, The decoration layer further comprises a light-transmissive color layer between any two adjacent layers of the texture structure layer, the coating layer, and the pattern layer.

11. The optical accessory of claim 5, wherein, The optical accessory further comprises a first reflective layer disposed on a side of the decoration layer away from the substrate layer.

12. The optical accessory of claim 5, wherein, The optical accessory further comprises a transparent first protective layer on a side of the decoration layer away from the substrate layer.

13. The optical accessory of claim 1, wherein, The texture structure is formed on the first surface of the substrate layer.

14. The optical accessory of claim 1, wherein, The optical accessory comprises a light-transmissive light guide layer disposed on the second surface, and the optical microstructure is formed in the light guide layer.

15. The optical accessory of claim 14, wherein, The light guide layer comprises a first light guide layer made of a second photoresist; the optical microstructure comprises a first optical microstructure formed on the first light guide layer; the substrate layer and the first light guide layer form a combined layer; the second light is adapted to propagate in the combined layer in a total reflection manner, and the first optical microstructure is adapted to change the direction of the second light to make the second light exit the optical accessory.

16. The optical accessory of claim 15, wherein, The difference between the refractive index of the second photoresist and the refractive index of the substrate layer is less than or equal to 0.

05.

17. The optical accessory of claim 14, wherein, The optical accessory further comprises a second reflective layer; the second reflective layer is disposed on a side of the light guide layer away from the substrate layer.

18. The optical accessory of claim 14, wherein, The optical accessory further comprises a transparent second protective layer on a side of the light guide layer away from the substrate layer.

19. The optical accessory of claim 15, wherein, The optical accessory comprises a plurality of the combined layers, and the plurality of the combined layers are stacked along the thickness direction of the optical accessory.

20. The optical accessory of claim 15, wherein, The light guide layer further comprises a plurality of second light guide layers; the plurality of second light guide layers are stacked on the surface of the combination layer away from the substrate layer; The optical microstructure comprises a second optical microstructure formed on each of the second light guide layers; each of the second light guide layers is adapted to propagate the second light in a total reflection manner, and the second optical microstructure is adapted to change the direction of the corresponding second light so that the second light exits the optical accessory.

21. The optical accessory of claim 1, wherein, The optical microstructure is formed on the second surface of the substrate layer.

22. The optical accessory of claim 1, wherein, The optical accessory further comprises a light source configured to provide the second light.

23. The optical accessory of claim 22, wherein, The substrate layer comprises at least one edge surface, at least a part of the edge surface serving as an incident surface of the combination layer; the light source is arranged corresponding to the incident surface.

24. The optical accessory of claim 22, wherein, The light source is arranged inside the substrate layer.

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