Method for manufacturing optical device of vehicle, luminaire of vehicle, and vehicle

Abstract

The present application discloses a method for manufacturing an optical device for a vehicle, a luminaire of a vehicle, and a vehicle. The method comprises S1: injection molding a base plate; S2: disposing an optical sheet on the base plate; and S3: injection molding an annular member at an edge of the base plate. At least part of the optical sheet is fixedly attached to the annular member, so that the optical sheet is fixedly held by the base plate and the annular member. According to the method of the present application, it is unnecessary to manually attach the optical sheet to the base plate and / or the annular member by using adhesive. Thus, the manufacture of the optical device is simplified, reducing the cost of the optical device, and also reducing the cost of the luminaire of a vehicle using the optical device.

Description

[0001] Description

[0002] METHOD FOR MANUFACTURING OPTICAL DEVICE OF VEHICLE, LUMINAIRE OF VEHICLE, AND VEHICLE

[0003] Technical Field

[0004] The present application relates to the technical field of vehicles, and in particular, to a method for manufacturing an optical device of a vehicle. The present application also relates to a luminaire of a vehicle and a vehicle including such luminaire.

[0005] Background

[0006] Vehicles are usually equipped with ambient lightings for providing decorative effects to the vehicles. An ambient lighting typically includes a light source assembly and an optical device located in front of the light source assembly.

[0007] In some ambient lightings, the optical device includes a base plate and an optical sheet disposed on the base plate. In some existing technologies, during the manufacture of the optical device, the base plate is first manufactured, and then the optical sheet is manually attached to the base plate. However, this method incurs relatively high labor costs and adhesive costs.

[0008] Summary

[0009] In view of the above technical problem, a first aspect of the present application provides a method for manufacturing an optical device of a vehicle. The method comprises the following steps: SI: injection molding a base plate; S2: disposing an optical sheet on the base plate; and S3: injection molding an annular member at an edge of the base plate. At least part of the optical sheet is fixedly attached to the annular member, so that the optical sheet is fixedly held by the base plate and the annular member.

[0010] In an embodiment, the optical sheet includes a first surface and a second surface opposite to each other, and a circumferential side surface connected between the first surface and thesecond surface. The first surface of the optical sheet is in contact with the base plate. The circumferential side surface of the optical sheet is fixedly attached to the annular member, or the second surface and the circumferential side surface of the optical sheet are fixedly attached to the annular member.

[0011] A second aspect of the present application provides a luminaire of a vehicle. The luminaire includes a light source assembly, a first optical device and a second optical device. The first optical device is disposed in front of the light source assembly along a light outgoing direction of the light source assembly and is manufactured by the method for manufacturing an optical device of a vehicle as described above. The second optical device is disposed on a side of the first optical device facing away from the light source assembly and is manufactured by the method for manufacturing an optical device of a vehicle as described above.

[0012] In an embodiment, in the first optical device, the base plate is an opaque bearing plate that has a first bearing surface and a second bearing surface opposite to each other. The optical sheet is a reflective sheet, and a first surface of the reflective sheet is in contact with the first bearing surface, and a circumferential side surface of the reflective sheet protrudes from the first bearing surface. The annular member is a transparent diffusion ring formed on at least part of the second bearing surface. The diffusion ring includes an extension portion extending beyond a circumferential edge of the bearing plate and surrounding the reflective sheet. At least part of the circumferential side surface of the reflective sheet is fixedly attached to the extension portion.

[0013] In an embodiment, the extension portion has a third bearing surface flush with the second surface of the reflective sheet.

[0014] In an embodiment, in the second optical device, the base plate is a transparent cover plate. The optical sheet is a transflective sheet that includes a functional region and an attachment region surrounding the functional region. The annular member is an opaque support ring. The functional region of the transflective sheet is surrounded by the support ring, and the attachment region of the transflective sheet is fixed between the cover plate and the support ring.

[0015] In an embodiment, the support ring and the extension portion of the diffusion ring areassembled together. The reflective sheet and the transflective sheet face each other, and the reflective sheet and the transflective sheet are spaced apart along a first direction perpendicular to the reflective sheet, so that an optical cavity is formed between the reflective sheet and the transflective sheet. The support ring is further spaced apart from the bearing plate along a second direction parallel to the reflective sheet, so that a light transmission gap is defined between the support ring and the bearing plate. Light emitted from the light source assembly is adapted to enter the optical cavity through the light transmission gap, propagate in the optical cavity, and meanwhile exit from the optical cavity by passing through the transflective sheet and the cover plate.

[0016] In an embodiment, the light source assembly includes a light source and a light guide plate assembled together. The light guide plate is provided with an entrance surface corresponding to the light source, an exit surface corresponding to the light transmission gap, and a reflective surface located between the entrance surface and the exit surface. The light emitted from the light source is adapted to enter the light guide plate through the entrance surface, be reflected by the reflective surface to the exit surface, exit from the light guide plate through the exit surface, and enter the optical cavity through the light transmission gap.

[0017] In an embodiment, the light guide plate includes an annular plate including an inner side surface parallel to the first direction, a light guide flange extending from the annular plate toward the light transmission gap, and an outer chamfer connected between the light guide flange and the annular plate. The light source is disposed in a region defined by the inner side surface, so that the inner side surface forms the entrance surface. An end surface of the light guide flange corresponding to the light transmission gap forms the exit surface. The outer chamfer forms the reflective surface.

[0018] In an embodiment, the light transmission gap is annular.

[0019] A third aspect of the present application provides a vehicle. The vehicle includes the luminaire of a vehicle according to the above description.

[0020] The beneficial effects of the present application are as follows. According to the technical solution of the present application, during the manufacture of the optical device of a vehicle,the annular member is injection molded on the base plate, and meanwhile the optical sheet is fixedly held by the base plate and the annular member. Therefore, during the manufacture of the optical device, it is unnecessary to manually attach the optical sheet to the base plate and / or the annular member by using adhesive. Thus, the manufacture of the optical device is simplified, reducing the cost of the optical device, and also reducing the cost of the luminaire of a vehicle using the optical device. In addition, the position of the optical sheet on the base plate and / or the annular member is more accurate, which improves the quality of the luminaire.

[0021] Brief Description of Drawings

[0022] With the aid of the non-limiting examples of typical embodiments of the present application, the present application will be further described in detail with reference to a plurality of drawings. The drawings are not drawn to actual scale.

[0023] FIG. 1 schematically shows a cross-sectional view of a luminaire of a vehicle according to an embodiment of the present application.

[0024] FIG. 2 schematically shows a first optical device according to an embodiment of the present application.

[0025] FIG. 3 schematically shows a cross-sectional view of the first optical device.

[0026] FIG. 4 schematically shows an enlarged view of the part I in FIG. 3.

[0027] FIG. 5 schematically shows a second optical device according to an embodiment of the present application.

[0028] FIG. 6 schematically shows a cross-sectional view of the second optical device.

[0029] FIG. 7 schematically shows a transflective sheet.

[0030] FIG. 8 schematically shows an enlarged view of the part II in FIG. 6.

[0031] FIG. 9 schematically shows an inner surface of a cover plate.

[0032] FIG. 10 schematically shows a cross-sectional view showing that the first optical device and the second optical device are assembled together.

[0033] FIG. 11 schematically shows a method for manufacturing an optical device of a vehicle according to an embodiment of the present application.List of reference numerals

[0034] 1 luminaire of a vehicle

[0035] 10 first optical device

[0036] 101 optical cavity 11 bearing plate

[0037] 111 first bearing surface 112 second bearing surface 113 circumferential edge of the bearing plate

[0038] 12 reflective sheet

[0039] 121 first surface 122 second surface 123 circumferential side surface

[0040] 13 diffusion ring

[0041] 131 extension portion 132 assembly flange 133 third bearing surface 134 light transmission gap 20 second optical device 21 cover plate

[0042] 211 inner surface 212 outer surface 211a first region 211b second region 22 transflective sheet

[0043] 221 functional region 222 attachment region 23 support ring

[0044] 231 inner flange 232 outer flange

[0045] 233 assembly groove

[0046] 30 light source assembly

[0047] 31 light source 32 light guide plate 321 entrance surface 322 exit surface

[0048] 323 reflective surface 324 annular plate 325 light guide flange

[0049] 324a upper surface of the annular plate

[0050] 324b lower surface of the annular plate325a inner side surface of the light guide flange

[0051] 325b outer side surface of the light guide flange

[0052] 40 housing 401 edge of the housing DI first direction D2 second direction

[0053] Detailed Description

[0054] To make the objectives, technical solutions, and advantages of this application clearer, the following clearly describes the technical solutions of this application with reference to specific embodiments and corresponding accompanying drawings of this application. Apparently, the described embodiments are merely some rather than all of the embodiments of the present disclosure. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of this application without creative efforts shall fall within the protection scope of this application.

[0055] FIG. 1 schematically shows a luminaire 1 of a vehicle (hereinafter referred to as a luminaire 1) according to an embodiment of the present disclosure. In a vehicle, the luminaire is usually used as an ambient lighting, and, for example, is mounted on the dashboard or the door of the vehicle.

[0056] As shown in FIG. 1, the luminaire 1 mainly includes a housing 40, a light source assembly 30, a first optical device 10 and a second optical device 20. The second optical device 20 is mounted at and covers the opening of the housing 40, so that the second optical device 20 and the housing 40 together define an accommodating space. The light source assembly 30 and the first optical device 10 are disposed in the accommodating space, and the light source assembly 30 and the second optical device 20 are respectively located on both sides of the first optical device 10.

[0057] FIGS. 2 and 3 schematically show the first optical device 10. Referring to FIG. 2 and 3, the first optical device 10 mainly includes a bearing plate 11, a reflective sheet 12 and a diffusion ring 13.

[0058] The bearing plate 11 is generally circular and has a first bearing surface 111 and a secondbearing surface 112 opposite to each other. The bearing plate 11 is opaque, and, for example, is made of opaque PC-ABS plastic.

[0059] The reflective sheet 12 is disposed on the first bearing surface 111. For example, the reflective sheet 12 is also circular and the edge of the reflective sheet 12 is aligned with the circumferential edge 113 of the first bearing surface 111 of the bearing plate 11.

[0060] The diffusion ring 13 is transparent, and, for example, is made of transparent PC plastic. The diffusion ring 13 is formed on the second bearing surface 112 and has an annular extension portion 131 extending outward along the radial direction of the bearing plate 11 and beyond the circumferential edge 113 of the bearing plate 11. The extension portion 131 surrounds the reflective sheet 12, and at least part of the reflective sheet 12 is fixedly attached to the extension portion 131. Therefore, the reflective sheet 12 is fixedly held by the bearing plate 11 and the diffusion ring 13.

[0061] FIGS. 5 and 6 schematically show the second optical device 20. Referring to FIG. 5 and 6, the second optical device 20 mainly includes a cover plate 21, a transflective sheet 22, and a support ring 23.

[0062] The cover plate 21 is generally circular and has an inner surface 211 and an outer surface 212 opposite to each other. In the luminaire 1, the outer surface 212 of the cover plate 21 serves as a light exit surface of the luminaire 1. As shown in FIG. 9, the inner surface 211 of the cover plate 21 includes a first region 211a and a second region 211b surrounding the first region 211a. For example, the first region 211a is generally circular and the second region 211b is generally annular surrounding the first region 211a. The cover plate 21 is transparent, and, for example, is made of transparent PC plastic.

[0063] The reflectivity and transmittance of the transflective sheet 22 can be determined according to actual situations, for example, the reflectivity can be 46%, and the transmittance can be 54%. As shown in FIG. 7, the transflective sheet 22 includes a functional region 221 and an attachment region 222 surrounding the functional region 221. The functional region 221 is generally circular, and the size of the functional region 221 matches the size of the first region 211a of the inner surface 211 of the cover plate 21. The attachment region 222 is generallyannular. After the transflective sheet 22 is disposed on the inner surface 211 of the cover plate 21, the functional region 221 covers the first region 211a of the inner surface 211 of the cover plate 21 , and the attachment region 222 is located in the second region 21 lb of the inner surface 211 of the cover plate 21 (as shown in FIG. 8).

[0064] The support ring 23 is opaque, and, for example, is made of opaque PC-ABS plastic. Referring to FIG. 8, the support ring 23 is formed in the second region 21 lb of the inner surface 211 of the cover plate 21, the attachment region 222 of the transflective sheet 22 is fixed between the cover plate 21 and the support ring 23, and the functional region 221 is surrounded by the support ring 23. In this way, the transflective sheet 22 is fixedly held by the cover plate 21 and the support ring 23.

[0065] In the luminaire 1, the first optical device 10 and the second optical device 20 are assembled together by the support ring 23 and the extension portion 131 of the diffusion ring 13, the second bearing surface 112 of the bearing plate 11 faces the light source assembly 30, and the transflective sheet 22 and the reflective sheet 12 face each other. The reflective sheet 12 and the transflective sheet 22 are spaced apart along a first direction DI perpendicular to the reflective sheet 12, and an optical cavity 101 is formed between the reflective sheet 12 and the transflective sheet 22. The support ring 23 is further spaced apart from the circumferential edge 113 of the bearing plate 11 along a second direction D2 parallel to the reflective sheet 12 (i.e., generally along the radial direction of the reflective sheet 12), and a light transmission gap 134 is defined between the support ring 23 and the circumferential edge 113 of the bearing plate 11 (i.e., the portion of the extension portion 131 between the support ring 23 and the circumferential edge 113 of the bearing plate 11 forms the light transmission gap 134, referring to FIG. 10). The light transmission gap 134 is annular.

[0066] When the luminaire 1 is in use, light emitted from the light source assembly 30 enters the optical cavity 101 through the light transmission gap 134. For example, the light is inclined away from the support ring 23 relative to the first direction DI (an inclination angle of the light relative to the first direction DI can be determined according to actual situations, which is not limited herein). The light entering the optical cavity 101 propagates in the optical cavity 101 bybeing repeatedly reflected by the reflective sheet 12 and the transflective sheet 22, and also exits from the optical cavity 101 by passing through the transflective sheet 22 and the cover plate 21.

[0067] It should be understood that, since the light transmission gap 134 is annular, the light entering the optical cavity 101 forms a ring of incident light. When the ring of incident light propagates in the optical cavity 101 by being repeatedly reflected, a plurality of rings of reflected light are formed, and the brightness of these rings of reflected light gradually decreases along the radially inward direction of the reflective sheet 12. When the ring of incident light propagates in the optical cavity 101 by being repeatedly reflected, it also exits from the optical cavity 101 by passing through the cover plate 21, and thus a plurality of rings of exiting light are formed in the cover plate 21. The brightness of these rings of exiting light also gradually decreases along the radially inward direction of the reflective sheet 12. From an overall perspective of the luminaire 1, a plurality of concentric rings of light are formed in the cover plate 21, and the brightness of these concentric rings of light gradually decreases along the radially inward direction of the reflective sheet 12. Thus the luminaire 1 generates a special optical effect and provides the vehicle with a desired decorative effect.

[0068] In an embodiment, the width of the light transmission gap 134 is between 1 mm and 2 mm, so that the ring of incident light entering the optical cavity 101 has appropriate brightness and width, and thereby a plurality of concentric rings of light with desired brightness can be appeared in the cover plate 21. In an embodiment, the distance between the reflective sheet 12 and the transflective sheet 22 is between 4.5 mm and 6 mm. In this way, the distance between adjacent concentric rings of light in the cover plate 21 is relatively large, so that the adjacent rings of light can be clearly distinguished from each other, which improves the optical effect of the luminaire 1. It should be understood that, according to actual situations, the width of the light transmission gap and / or the distance between the reflective sheet and the transflective sheet may also be other values, which are not limited herein.

[0069] It should be understood that, according to actual requirements, the light transmission gap may also be in other shapes, such as oval, rectangular, etc., so that a desired pattern is appeared in the cover plate.As shown in FIG. 1, the light source assembly 30 includes a light source 31 and a light guide plate 32 assembled with the light source 31.

[0070] The light source 31 may be, for example, an LED.

[0071] The light guide plate 32 is provided with an entrance surface 321, an exit surface 322, and a reflective surface 323 between the entrance surface 321 and the exit surface 322. Light emitted from the light source 31 enters the light guide plate 32 through the entrance surface 321, is reflected by the reflective surface 323 to the exit surface 322, and exits from the light guide plate 32 through the exit surface 322. The light enters the optical cavity 101 through the light transmission gap 134 after exiting from the exit surface 322.

[0072] Specifically, the light guide plate 32 includes an annular plate 324. The annular plate 324 has an upper surface 324a and a lower surface 324b opposite to each other along the first direction DI, and further has an annular inner side surface connected between the upper surface 324a and the lower surface 324b. In the luminaire 1, the upper surface 324a of the annular plate 324 faces the first optical device 10, and the lower surface 324b of the annular plate 324 faces away from the first optical device 10. The light source 31 is disposed in a region defined by the inner side surface. The light emitted from the light source 31 enters the light guide plate 32 through the inner side surface of the annular plate 324, so that the annular inner side surface of the light guide plate forms the entrance surface 321 described above. In an embodiment, a plurality of light sources 31 are provided and are evenly arranged along the annular entrance surface 321.

[0073] The light guide plate 32 further includes an annular light guide flange 325 extending from the upper surface 324a of the annular plate 324 toward the light transmission gap 134. For example, the light guide flange 325 is located at a radially outer edge of the annular plate 324 and extends generally along the first direction DI (i.e., the light guide flange 325 is generally perpendicular to the annular plate 324). The light guide flange 325 further has an inner side surface 325a and an outer side surface 325b opposite to each other along the second direction D2, and an end surface connected between the inner side surface 325a and the outer side surface 325b. The end surface of the light guide flange 325 corresponds to the light transmission gap134 and is formed as the exit surface 322 described above.

[0074] The light guide plate 32 further includes an outer chamfer connected between the light guide flange 325 and the annular plate 324. For example, the outer chamfer is connected between the outer side surface 325b of the light guide flange 325 and the lower surface 324b of the annular plate 324. The outer chamfer is inclined at an appropriate angle relative to the first direction DI, and is configured to reflect the light propagating from the entrance surface 321 to the outer chamfer to the exit surface 322, and thus the outer chamfer is formed as the reflective surface 323 described above. It should be understood that the angle at which the outer chamfer is inclined relative to the first direction DI may be determined according to actual situations, which is not limited herein.

[0075] The method for manufacturing the first optical device 10 is described below with reference to FIG. 11.

[0076] SI: Injection mold an opaque bearing plate 11. As described above, the bearing plate 11 has a first bearing surface 111 and a second bearing surface 112 opposite to each other.

[0077] S2: Dispose a reflective sheet 12 on the first bearing surface 111. For example, the reflective sheet 12 is closely attached to the first bearing surface 111 of the bearing plate 11 by a robot (not shown) or other means, and there is no or almost no gap between the reflective sheet 12 and the first bearing surface 111 of the bearing plate 11. It should be noted that the reflective sheet 12 is not fixedly connected to the first bearing surface 111, so that the position of the reflective sheet 12 on the first bearing surface 111 can be adjusted as required.

[0078] S3: Injection mold a transparent diffusion ring 13 on at least part of the second bearing surface 112 of the bearing plate 11 and along the edge of the bearing plate 11. As described above, the diffusion ring 13 has an annular extension 131 that extends outward along the radial direction of the bearing plate 11 and beyond the circumferential edge 113 of the bearing plate 11. The extension portion 131 surrounds the reflective sheet 12 and is fixedly connected to the reflective sheet 12. In this way, the reflective sheet 12 is fixedly held by the bearing plate 11 and the diffusion ring 13.

[0079] According to the technical solution of the present application, during the manufacture ofthe first optical device 10, the diffusion ring 13 is injection molded on the bearing plate 11, and meanwhile the reflective sheet 12 is fixedly held by the bearing plate 11 and the diffusion ring 13. Therefore, it is unnecessary to manually attach the reflective sheet on the bearing plate and / or the diffusion ring by using adhesive, which simplifies the manufacture of the first optical device 10 and reduces the cost of the first optical device 10. Moreover, the position of the reflective sheet 12 in the first optical device 10 is relatively accurate, which improves the quality of the first optical device 10 and the quality of the luminaire 1 using the first optical device 10.

[0080] In addition, in the step S2, there is no or almost no gap between the reflective sheet 12 and the first bearing surface 111 of the bearing plate 11. In this way, during the inj ection molding of the diffusion ring 13, the case that the material for forming the diffusion ring enters a gap between the reflective sheet 12 and the bearing plate 11 is avoided, thus avoiding defects in the luminaire 1 caused by that case.

[0081] As shown in FIG. 4, the reflective sheet 12 has a first surface 121 and a second surface 122 opposite to each other along the first direction DI, and a circumferential side surface 123 connected between the first surface 121 and the second surface 122. In an embodiment, the thickness of the reflective sheet is between about 0.3 mm and 1 mm, such that the width of the circumferential side surface is between about 0.3 mm and 1 mm. Of course, reflective sheets with other thicknesses can also be used according to actual situations.

[0082] In the step S2, the first surface 121 of the reflective sheet 12 is in contact with the first bearing surface 111 of the bearing plate 11. The circumferential side surface 123 of the reflective sheet 12 protrudes from the first bearing surface 111 of the bearing plate 11.

[0083] In the step S3, the circumferential side surface 123 of the reflective sheet 12 is fixedly attached to the extension portion 131 of the diffusion ring 13. The extension portion 131 may have a third bearing surface 133 (as shown in FIG. 4) flush with the second surface 122 of the reflective sheet 12, which facilitates the injection molding of the diffusion ring 13. It should be understood that the third bearing surface of the extension portion can also be not flush with the second surface of the reflective sheet. For example, the third bearing surface of the extension portion is higher than the second surface of the reflective sheet.The diffusion ring 13 and the reflective sheet 12 do not overlap each other along the first direction DI. After the first optical device 10 is applied in the luminaire 1, stray light deviating from the rings of reflected light is prevented from occurring in the optical cavity 101, thereby avoiding defects in the luminaire 1.

[0084] The method for manufacturing the second optical device 20 is described below with reference to FIG. 11.

[0085] SI: Injection mold a transparent cover plate 21. As described above, the cover plate 21 has an inner surface 211 and an outer surface 212 opposite to each other along the first direction DI. The inner surface 211 includes a circular first region 211a and an annular second region 211b surrounding the first region 211a.

[0086] S2: Dispose a transflective sheet 22 on the inner surface 211 of the cover plate 21. As described above, the transflective sheet 22 includes a circular functional region 221 and an annular attachment region 222 surrounding the functional region 221. The functional region 221 covers the first region 21 la, and the attachment region 222 is within the second region 211b. It should be noted that the transflective sheet 22 is closely attached to the inner surface 211 of the cover plate 21, but is not fixedly connected to the inner surface 211 of the cover plate 21, so that the position of the transflective sheet 22 on the inner surface 211 of the cover plate 21 can be adjusted as required.

[0087] S3: Injection mold an opaque support ring 23 on the second region 211b of the cover plate 21. The functional region 221 of the transflective sheet 22 is surrounded by the support ring 23, and the attachment region 222 of the transflective sheet 22 is fixed between the cover plate 21 and the support ring 23 (as shown in FIG. 8), so that the transflective sheet 22 is fixedly held by the cover plate 21 and the support ring 23.

[0088] Similar to the method for manufacturing the first optical device 10, during the manufacture of the second optical device 20, the support ring 23 is injection molded on the cover plate 21, and meanwhile the transflective sheet 22 is fixedly held by the cover plate 21 and the support ring 23. Therefore, during the manufacture of the second optical device 20, it is unnecessary to manually attach the transflective sheet on the cover plate and / or the support ring by usingadhesive, which simplifies the manufacture of the second optical device 20 and reduces the cost of the second optical device 20. Moreover, the position of the transflective sheet 22 in the second optical device 20 is relatively accurate, which improves the quality of the second optical device 20 and the quality of the luminaire 1 using the second optical device 20.

[0089] In addition, the opaque support ring 23 plays a role of hiding mounting structures in the luminaire 1, which improves the aesthetics of the luminaire 1.

[0090] In the step S2, a circumferential side surface of the transflective sheet protrudes from an inner surface of the cover plate. In this way, both the circumferential side surface of the transflective sheet and its surface facing away from the cover plate are fixedly attached to the support ring, thereby the transflective sheet being fixedly held by the cover plate and the support ring. In other embodiments, according to actual situations, only the circumferential side surface of the transflective sheet is fixedly connected to the support ring, which also realizes that the transflective sheet is fixedly held by the cover plate and the support ring.

[0091] As also shown in FIG. 3, the diffuser ring 13 is configured with an annular assembly flange 132 extending generally along the first direction DI. The assembly flange 132 surrounds the extension portion 131 and is generally perpendicular to the third bearing surface 133 of the extension portion 131. As shown in FIG. 6, the support ring 23 is generally annular and is configured with an annular inner flange 231 and an annular outer flange 232 both extending generally along the first direction DI. An assembly groove 233 is formed between the inner flange 231 and the outer flange 232. As also shown in FIG. 1, in the luminaire 1, the assembly flange 132 of the diffusion ring 13 and the edge 401 of the housing 40 are engaged within the assembly groove 233. Referring to FIG. 10, the inner flange 231 of the support ring 23 is spaced apart from the circumferential edge 113 of the bearing plate 11 (or the circumferential edge of the reflective sheet 12) along the second direction D2 (i.e., the radial direction of the reflective sheet 12), so that the light transmission gap 134 described above is formed between the inner flange 231 of the support ring 23 and the circumferential edge of the reflective sheet 12.

[0092] The above only describes the embodiments of the present application and is not intended to limit the present application. For those skilled in the art, various modifications and changescan be made to the present application. Any modifications, equivalent substitutions or improvements made within the spirit and principle of the present application shall fall within the scope of protection defined by the appended claims of the present application.

Claims

Claims1. A method for manufacturing an optical device of a vehicle, wherein the method comprises:SI: injection molding a base plate;S2: disposing an optical sheet on the base plate; andS3: injection molding an annular member on an edge of the base plate, and wherein at least part of the optical sheet is fixedly attached to the annular member, so that the optical sheet is fixedly held by the base plate and the annular member.

2. The method according to claim 1, wherein the optical sheet comprises a first surface and a second surface opposite to each other, and a circumferential side surface connected between the first surface and the second surface;the first surface of the optical sheet is in contact with the base plate, and the circumferential side surface of the optical sheet is fixedly attached to the annular member, or the second surface and the circumferential side surface of the optical sheet are fixedly attached to the annular member.

3. A luminaire of a vehicle, wherein the luminaire (1) comprises:a light source assembly (30);a first optical device (10) disposed in front of the light source assembly (30) along a light outgoing direction of the light source assembly (30), and wherein the first optical device (10) is manufactured by the method for manufacturing an optical device of a vehicle according to claim 1 or 2; anda second optical device (20) disposed on a side of the first optical device (10) facing away from the light source assembly (30), and wherein the second optical device (20) is manufactured by the method for manufacturing an optical device of a vehicle according to claim 1 or 2.

4. The luminaire according to claim 3, wherein in the first optical device (10), the base plate is an opaque bearing plate (11), and the bearing plate (11) has a first bearing surface (111) and a second bearing surface (112) opposite to each other;the optical sheet is a reflective sheet (12), a first surface (121) of the reflective sheet (12)is in contact with the first bearing surface (111), and a circumferential side surface (123) of the reflective sheet (12) protrudes from the first bearing surface (111);the annular member is a transparent diffusion ring (13) formed on at least part of the second bearing surface (112), the diffusion ring (13) comprises an extension portion (131) extending beyond a circumferential edge (113) of the bearing plate (11) and surrounding the reflective sheet (12), and at least part of the circumferential side surface (123) of the reflective sheet (12) is fixedly attached to the extension portion (131).

5. The luminaire according to claim 4, wherein the extension portion (131) has a third bearing surface (133) flush with a second surface (122) of the reflective sheet (12).

6. The luminaire according to claim 4 or 5, wherein in the second optical device (20), the base plate is a transparent cover plate (21);the optical sheet is a transflective sheet (22) which comprises a functional region (221) and an attachment region (222) surrounding the functional region (221);the annular member is an opaque support ring (23), the functional region (221) of the transflective sheet (22) is surrounded by the support ring (23), and the attachment region (222) of the transflective sheet (22) is fixed between the cover plate (21) and the support ring (23).

7. The luminaire according to claim 6, wherein the support ring (23) and the extension portion (131) of the diffusion ring (13) are assembled together;the reflective sheet (12) and the transflective sheet (22) face each other, and the reflective sheet (12) and the transflective sheet (22) are spaced apart along a first direction (DI) perpendicular to the reflective sheet (12), so that an optical cavity (101) is formed between the reflective sheet (12) and the transflective sheet (22), and wherein the support ring (23) is further spaced apart from the bearing plate (11) along a second direction (D2) parallel to the reflective sheet (12), so that a light transmission gap (134) is defined between the support ring (23) and the bearing plate (11);light emitted from the light source assembly (30) is adapted to enter the optical cavity (101) through the light transmission gap (134) and propagate in the optical cavity (101), and meanwhile the light is adapted to exit from the optical cavity (101) by passing through thetransflective sheet (22) and the cover plate (21).

8. The luminaire according to claim 7, wherein the light source assembly (30) comprises a light source (31) and a light guide plate (32) which are assembled together, and the light guide plate (32) is configured with:an entrance surface (321) corresponding to the light source (31);an exit surface (322) corresponding to the light transmission gap (134); anda reflective surface (323) located between the entrance surface (321) and the exit surface (322);wherein light emitted from the light source (31) is adapted to enter the light guide plate (32) through the entrance surface (321), be reflected by the reflective surface (323) to the exit surface (322), exit from the light guide plate (32) through the exit surface (322), and enter the optical cavity (101) through the light transmission gap (134).

9. The luminaire according to claim 8, wherein the light guide plate (32) comprises: an annular plate (324) comprising an inner side surface parallel to the first direction (DI), and wherein the light source (31) is disposed in a region defined by the inner side surface, such that the inner side surface forms the entrance surface (321);a light guide flange (325) extending from the annular plate (324) toward the light transmission gap (134), and wherein an end surface of the light guide flange (325) corresponding to the light transmission gap (134) forms the exit surface (322); andan outer chamfer connected between the light guide flange (325) and the annular plate (324), and wherein the outer chamfer forms the reflective surface (323).

10. The luminaire according to claim 7, wherein the light transmission gap (134) is annular.

11. A vehicle, wherein the vehicle comprises the luminaire for a vehicle according to any one of claims 3 to 10.

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