Reflector, optical module and lamp

Abstract

The present application provides a reflector, an optical module, and a lamp. The reflector is configured to distribute light rays emitted by a light-emitting module. The reflector is provided with a plurality of light-emitting cavities, each light-emitting cavity comprising, arranged coaxial therewith, an expansion part and a reflection part which are connected to each other. The expansion parts are arranged away from the light-emitting module, and the reflection parts are arranged close to the light-emitting module. The expansion part comprises a second end away from the reflection part, the diameter of the second end being greater than the diameter of the reflection part.

Description

Reflectors, optical assemblies, and luminaires

[0001] Cross-reference to related applications

[0002] The present application claims priority to the Chinese patent application No. 202422391501.9, filed on September 29, 2024, and entitled "Reflectors, optical assemblies, and luminaires", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the field of lighting technology, and in particular to a reflector, an optical assembly, and a luminaire. BACKGROUND

[0004] With the rapid progress of LED lighting technology and the continuous improvement of people's quality of life, track grid lamps, as a high-efficiency and energy-saving lighting solution, are increasingly widely used in various commercial and high-end residential spaces. The unique lens and reflector design of the track grid lamp realizes precise control and efficient use of light, meeting the lighting needs in different scenarios. However, while pursuing the ultimate lighting effect, the appearance aesthetics of the grid reflector also cannot be ignored.

[0005] The traditional grid reflector is composed of multiple reflector holes, which effectively improves the light control performance, but the discrete appearance limits its application in high-end occasions. To solve this problem, a transparent panel such as an acrylic or glass flat plate is usually installed on the outer surface of the reflector to improve the overall aesthetics and level. However, the installation process of the panel is complex and prone to errors. If the installation is incorrect, the panel and the light exit hole of the reflector do not "overlap", and part of the light cannot be emitted, resulting in reduced light output, poor lighting effect, and other problems. SUMMARY

[0006] The present application provides a reflector, an optical assembly, and a luminaire.

[0007] The technical solution of the present application provides a reflector configured to distribute the light emitted by a light-emitting assembly. The reflector is provided with a plurality of light exit cavities. Each light exit cavity includes an expansion part and a reflection part coaxially arranged and connected thereto. The expansion part is arranged away from the light-emitting assembly, and the reflection part is arranged close to the light-emitting assembly. The expansion part includes a second end away from the reflection part, and the diameter of the second end is greater than the diameter of the reflection part.

[0008] In an implementation manner, the expansion part further includes a first end connected to the reflection cavity. In the direction from the first end to the second end, the expansion part is in a horn shape.

[0009] In an implementation manner, a plurality of reflection edges are arranged on the inner side of the reflection part.

[0010] The technical solution of the present application further provides an optical assembly, comprising a panel, an adhesive member and the above-mentioned light reflector, the panel is bonded to the light reflector through the adhesive member, and the panel is arranged on the side of the adhesive member away from the light emitting assembly

[0011] In an implementation manner, the panel is provided with a transparent light emitting part at the position corresponding to the reflecting part, and in the direction perpendicular to the optical axis of the light emitting assembly, the projection area of the transparent light emitting part covers the projection area of the reflecting cavity.

[0012] In an implementation manner, in the direction perpendicular to the optical axis of the light emitting assembly, the projection area of the second end covers the coverage area of the transparent light emitting part.

[0013] In an implementation manner, the panel comprises a silk screen part in addition to the transparent light emitting part, and the silk screen part is configured to shield other light rays in addition to the light rays emitted from the transparent light emitting part.

[0014] In an implementation manner, the adhesive member is provided with an opening hole at the position corresponding to the transparent light emitting part, in the projection direction perpendicular to the substrate, the transparent light emitting part has a first projection area, and the opening hole has a second projection area, and the first projection area is smaller than the second projection area.

[0015] In an implementation manner, the opening hole has a first opening distance in the length direction of the adhesive member and a second opening distance in the width direction of the adhesive member, and the first opening distance is greater than the second opening distance.

[0016] The technical solution of the present application further provides a lamp, comprising a shell, a light emitting assembly and the above-mentioned optical assembly. BRIEF DESCRIPTION OF DRAWINGS

[0017] FIG. 1 is a structural schematic diagram of a linear lamp according to the preferred embodiment of the present application;

[0018] FIG. 2 is an installation explosion view of the linear lamp in FIG. 1;

[0019] FIG. 3 is a structural schematic diagram of the light reflecting assembly in FIG. 2;

[0020] FIG. 4 is a sectional view of FIG. 3;

[0021] FIG. 5 is a structural schematic diagram of the panel in FIG. 2;

[0022] FIG. 6 is a structural schematic diagram of the adhesive member in FIG. 2.

[0023] The labels of the components in the drawings are as follows: reflector 1, base plate 11, light-emitting cavity 12, expansion part 121, first end 1211, second end 1212, reflecting part 122, reflecting cavity 1221, reflecting ridge 1222, panel 2, transparent light-emitting part 21, silk screen part 22, bonding member 3, opening 31, bonding part 32, optical assembly 100, shell 110, light-emitting assembly 120, light source plate 1201, power supply 1202, lamp 200. DETAILED DESCRIPTION

[0024] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application will be described in detail below in conjunction with the drawings and specific embodiments.

[0025] Here, it should be noted that, in order to avoid the present application being obscured by unnecessary details, only structures and / or processing steps closely related to the scheme of the present application are shown in the drawings, and other details not closely related to the present application are omitted.

[0026] In addition, it should also be noted that the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or device.

[0027] Please refer to FIGS. 1-6, the embodiment of the application provides a lamp 200, which comprises a shell 110 and an optical assembly 100 and a light-emitting assembly 120 arranged in the shell 110. The optical assembly 100 is configured to distribute the light emitted by the light-emitting assembly 120, the light-emitting assembly 120 comprises a light source plate 1201 and a power supply 1202, the power supply 1202 is used to power the light source plate 1201, and the light source plate 1201 is used to emit light.

[0028] In other embodiments, the optical assembly 100 can be applied to linear lamps, track lights and other lighting products, which are not limited here. The track light comprises a track, which is generally installed on a wall or a ceiling, and the shell 110 is installed in the track for mobile lighting.

[0029] Please refer to FIG. 2, the optical assembly 100 comprises a lens member 4, a reflector 1 and a panel 2 arranged in sequence along the height direction, and the panel 2 is provided with a transparent light-emitting part 21. The light emitted by the light-emitting assembly 120 passes through the lens member 4 and the reflector 1 in sequence and is emitted from the transparent light-emitting part 21 on the panel 2.

[0030] In order to improve the connection strength of the panel 2 and the reflector 1, a bonding member 3 is arranged between the reflector 1 and the panel 2, and the bonding member 3 fixedly connects the reflector 1 and the panel 2.

[0031] In the embodiment, the bonding member 3 is double-sided tape. One side of the double-sided tape is attached to the reflector 1, and the other side is attached to the panel 2. In this way, the flatness of the panel is improved, and the aesthetics of the lamp 200 is improved. In other embodiments, the bonding member can also be bonded by glue, and the like, which is not limited here.

[0032] To avoid the bonding member 3 absorbing light and affecting the lighting effect. The bonding member 3 is provided with an opening 31 corresponding to the position of the transparent light emitting portion 21. In the projection direction perpendicular to the panel 2, the transparent light emitting portion 21 has a first projection area, and the opening 31 has a second projection area. The first projection area is smaller than the second projection area, and the first projection area is located within the second projection area, so that the light is not through the opening 31, but directly emitted from the transparent light emitting portion 21, reducing the loss of light in the propagation process. As much light as possible can be propagated according to the designed path, rather than being absorbed or scattered by unnecessary materials, significantly improving the light efficiency.

[0033] In the preferred embodiment, the opening 31 is a waist-shaped hole. The opening 31 has a first opening distance in the length direction of the bonding member 3 and a second opening distance in the width direction of the bonding member 3, and the first opening distance is greater than the second opening distance. The first opening distance ensures that the bonding member 3 has sufficient adhesion to fix the reflector 1 and the panel 2 together. The smaller second opening distance can adapt to the reflector 1 or the panel 2 with smaller width, ensuring that the bonding member 3 is only attached to the reflector 1 and the panel 2, and will not exceed the reflector 1 and the panel 2.

[0034] Please refer to FIG. 1 to FIG. 2, to avoid seeing internal defects such as the bonding member 3 on the panel 2. The panel 2 includes a silk screen portion 22 in addition to the transparent light emitting portion 21, and the bonding member 3 includes a bonding portion 32 in addition to the opening 31.

[0035] In the projection direction perpendicular to the panel 2, the silk screen portion 22 has a third projection area, and the bonding portion 32 has a fourth projection area. The fourth projection area is located within the third projection area, and the silk screen portion 22 can effectively block the bonding member 3, maintaining the visual consistency of the surface of the panel 2, and avoiding the visual abruptness caused by the difference in materials. That is, the silk screen portion 22 can block other light in addition to the light emitted from the transparent light emitting portion 21. In addition, the length of the silk screen portion 22 is approximately equal to the length of the housing 110, facilitating the installation of the panel 2 at one end.

[0036] Please refer to FIG. 3, the reflector 1 includes a substrate 11 and a plurality of light emitting cavities 12 connected to the substrate 11 and extending towards the light emitting assembly 120.

[0037] In some embodiments, the reflector 1 adopts a splicing structure, which is convenient to install. For example, the reflector 1 is made into two sections, each of which is provided with a substrate 11 and a light emitting cavity 12.

[0038] In other embodiments, the reflector 1 is integrally arranged.

[0039] The light-emitting cavity 12 is provided with a reflecting portion 122 on the side close to the light-emitting assembly 120. The reflecting portion 122 comprises a reflecting cavity 1221. The reflecting cavity 1221 is arranged in correspondence with the transparent light-emitting portion 21 on the panel 2. The light emitted by the light-emitting assembly 120, after passing through the lens member 4, enters the reflecting cavity 1221, realizes accurate light control at a small angle, and is then emitted from the transparent light-emitting portion 21.

[0040] In the present embodiment, the reflecting cavity 1221 is straight-cylindrical, i.e., the upper and lower openings have the same diameter. In other embodiments, the reflecting cavity 1221 has a structure with a smaller upper opening and a larger lower opening. Since the opening gradually increases from the top to the bottom, this structure can more effectively capture the light from the light-emitting assembly 120 and guide it to the inside of the reflecting cavity 1221, thereby improving the light collection efficiency.

[0041] The light-emitting cavity 12 has an optical axis, which is preferably the central axis of the reflecting cavity 1221. The central points of the reflecting cavity 1221, the transparent light-emitting portion 21, and the opening 31 are located on the same central axis or the substrate is located on the same central axis. In this way, more light can be emitted, reducing light waste and improving the light-emitting effect.

[0042] As shown in FIGS. 3 and 4, the reflecting portion 122 is provided with a plurality of reflecting edges 1222 on the inner side of the reflecting cavity 1221. The reflecting edges 1222 extend from the top to the substrate 11, and the reflecting edges 1222 have a structure similar to a tri-prism. In this way, the reflecting edges 1222 increase the number of reflections and the reflection angle of the light on the reflecting portion 122, thereby effectively concentrating and reflecting the light into the reflecting cavity 1221, improving the reflection effect and the utilization rate of the light.

[0043] Each light-emitting cavity 12 comprises a reflecting portion 122 and an expanding portion 121 coaxially arranged along the optical axis, and the expanding portion 121 and the reflecting portion 122 are connected to each other. The expanding portion 121 is arranged on the substrate 11 and extends from the substrate 11 toward the reflecting portion 122.

[0044] In some embodiments, in the projection direction perpendicular to the substrate 11, the projection area of the transparent light-emitting portion 21 is equal to the projection area of the reflecting cavity 1221.

[0045] In other embodiments, in the projection direction perpendicular to the substrate 11, the projection area of the transparent light-emitting portion 21 is greater than the projection area of the reflecting cavity 1221. In this way, the light reflected from the reflecting cavity 1221 can be efficiently emitted through the transparent light-emitting portion 21, reducing light loss and improving the light-emitting efficiency.

[0046] Please refer to FIG. 3 to FIG. 4, the expansion part 121 includes a first end 1211 connected with the reflection cavity 1221 and a second end 1212 away from the reflection cavity 1221. The first end 1211 of the expansion part 121 is connected with the base plate 11. The diameter of the second end 1212 is greater than the maximum diameter of the reflection cavity 1221. Because the diameter of the second end 1212 is greater than the maximum diameter of the reflection cavity 1221, the light emitting range of the light emitting cavity 12 can be increased. The diameter of the second end is greater than the diameter of the transparent light emitting part 21, which increases the light emitting range, effectively guarantees the light emitting rate under reasonable installation error, and reduces the requirement for installation precision.

[0047] From the first end 1211 to the second end 1212, the expansion part 121 is trumpet-shaped, which not only increases the light emitting range of the light emitting cavity 12, but also optimizes the light distribution of the light emitted from the light emitting cavity 12, so that the light is more uniform, and the overall illumination effect is improved.

[0048] The expansion part 121 can be a lead angle of the reflection cavity 1221 on the base plate 11. Optionally, the lead angle is 1.5 millimeters.

[0049] Please refer to FIG. 3 to FIG. 6, in order to avoid the bonding member 3 from entering or shielding the reflection cavity 1221, the projection area of the reflection cavity 1221 in the projection direction perpendicular to the base plate 11 is less than the projection area of the opening 31. In this way, it is ensured that the bonding part 32 does not contact the reflection cavity 1221, and the light passing through the bonding part 32 is avoided, so that the light scattering, absorption or reflection path change caused by the light passing through the bonding part 32 is eliminated.

[0050] In some embodiments, the installation deviation is mainly caused by the dimensional tolerance of the parts. For example, the diameter of the reflection cavity 1221 and the diameter of the transparent light emitting part 21 are both 12 millimeters, and the maximum installation deviation of the lamp is 1.1 millimeter. The length deviation of the shell 110 is 0.3 millimeter, the length deviation of the light source plate 1201 is 0.2 millimeter, and the deviation of the reflector 1 installed in the light source plate 1201 is 0.2 millimeter. In order to guarantee the light emitting rate, the diameter of the second end 1212 of the expansion part 121 is 15 millimeters, which increases the light emitting range, so that more light can be emitted from the reflector 1. In order to avoid the bonding member 3 from affecting the light efficiency, the first opening distance of the bonding member 3 is less than or equal to 13 millimeters, and the second opening distance is less than 13 millimeters. In this way, it is ensured that the bonding member 3 does not enter the area of the reflection cavity 1221, and the optical purity of the reflection cavity 1221 is maintained. In addition, the bonding member 3 can be closely attached without invading the non-bonding area, which is suitable for the reflector 1 or the panel 2 with a relatively narrow width.

[0051] In summary, the optical assembly 100 can effectively reflect and concentrate the light emitted by the light emitting assembly 120 through the reflecting portion 122, and reduce the loss of light. The reflected light is further diffused by the expansion portion 121 connected to the end of the reflecting portion 122. Moreover, the diameter of the second end of the expansion portion 121 away from the reflecting portion 122 is greater than the diameter of the reflecting portion 122, which effectively expands the light emitting range and improves the overall utilization of light. Since the expansion portion 121 is connected to the substrate 11 and the diameter of the second end is greater than the diameter of the reflecting portion 122, this design improves the tolerance of the optical assembly 100 to installation errors to a certain extent. Even if there is a certain deviation in the actual installation process, it can ensure that the light can be effectively emitted from the reflecting portion 122 and diffused through the expansion portion 121, thereby ensuring the light emitting rate and overall lighting effect.

[0052] The above embodiments are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A light reflector configured to distribute light emitted by a light emitting assembly (120), the light reflector (1) being provided with a plurality of light exit cavities (12), each of the light exit cavities (12) comprising an expansion portion (121) and a reflection portion (122) coaxially arranged and connected thereto, wherein, The expanding part (121) is arranged away from the light-emitting assembly (120), the reflecting part (122) is arranged close to the light-emitting assembly (120), the expanding part (121) comprises a second end (1212) away from the reflecting part (122), and the diameter of the second end (1212) is greater than the diameter of the reflecting part (122).

2. The retroreflector of claim 1, wherein, The expanding part (121) further comprises a first end (1211) connected with the reflecting cavity (1221), and the expanding part (121) is trumpet-shaped from the first end (1211) to the second end (1212).

3. The retroreflector of claim 1 or 2, wherein, The reflecting part (122) is internally provided with a plurality of reflecting edges (1222).

4. An optical assembly, comprising a panel (2), an adhesive member (3), and the light reflector (1) according to any one of claims 1 to 3, the panel (2) is bonded to the light reflector (1) through the adhesive member (3), and the panel (2) is arranged on the side of the adhesive member (3) away from the light-emitting assembly (120).

5. The optical assembly of claim 4, wherein, The panel (2) is provided with a transparent light-emitting part (21) at the position corresponding to the reflecting part (122), and in the direction perpendicular to the optical axis of the light-emitting assembly (120), the projection area of the transparent light-emitting part (21) covers the projection area of the reflecting cavity (1221).

6. The optical assembly of claim 5, wherein, In the direction perpendicular to the optical axis of the light-emitting assembly (120), the projection area of the second end (1212) covers the coverage area of the transparent light-emitting part (21).

7. The optical assembly of claim 6, wherein, The panel (2) comprises a silk-screen part (22) other than the transparent light-emitting part (21), and the silk-screen part (22) is configured to shield light other than the light emitted from the transparent light-emitting part (21).

8. The optical assembly of claim 7, wherein, The adhesive member (3) is provided with an opening (31) at the position corresponding to the transparent light-emitting part (21), and in the projection direction perpendicular to the light reflector (1), the transparent light-emitting part (21) has a first projection area, and the opening (31) has a second projection area, and the first projection area is smaller than the second projection area.

9. The optical assembly of claim 8, wherein, The opening (31) is a waist-shaped hole, the opening (31) has a first opening distance in the length direction of the adhesive member (3), and has a second opening distance in the width direction of the adhesive member (3), and the first opening distance is greater than the second opening distance.

10. A lamp, comprising a housing (110) and a light-emitting assembly (120), and the optical assembly (100) according to any one of claims 4 to 9.

Images