Optical module and lamp

Abstract

The application provides an optical module and a lamp, the optical module comprises a shell and a light source module, the shell is provided with a first reflecting surface, the light source module comprises a light source and a lens covering the light source, the lens has an entrance surface and a first light exit surface, the first light exit surface partially protrudes outward to form a second light exit surface, the first reflecting surface can reflect the light rays emitted by the second light exit surface, the orthographic projection of the first light exit surface on a horizontal plane is a first sector, the orthographic projection of the second light exit surface on the horizontal plane is a second sector, and the central angle of the first sector is greater than the central angle of the second sector. Compared with the prior art, the application can enhance the proportion of forward projecting light rays, so that the illumination light rays are concentrated in the working area, the optical height of the light source is reduced, the overall height of the lamp is reduced, and the use experience of the user is improved.

Description

Technical Field

[0001] This invention relates to an optical module and a lamp, belonging to the field of lighting technology. Background Technology

[0002] Desk lamps are commonly used lighting tools, but with limited desktop space, they can take up a large portion of the work area.

[0003] In existing desk lamps, the lens cannot focus the direction of light, but instead shines a large amount of light on non-working areas, resulting in a waste of light.

[0004] In view of this, it is indeed necessary to propose an optical module and lighting fixture to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide an optical module and lamp that can improve light efficiency and user experience.

[0006] To achieve the above objectives, the present invention provides an optical module, including a housing and a light source module. The housing has a first reflective surface, and the light source module includes a light source and a lens covering the light source. The lens has an incident light surface and a first emitting light surface. The first emitting light surface partially protrudes outward to form a second emitting light surface. The first reflective surface can reflect the emitted light from the second emitting light surface. The orthographic projection of the first emitting light surface on a horizontal plane is a first sector, and the orthographic projection of the second emitting light surface on a horizontal plane is a second sector. The central angle of the first sector is larger than the central angle of the second sector.

[0007] As a further improvement of the present invention, the first light-emitting surface and the second light-emitting surface are continuous at the center of the lens, and the orthographic projection of the first light-emitting surface in the vertical plane partially overlaps with the orthographic projection of the second light-emitting surface in the vertical plane.

[0008] As a further improvement of the present invention, the sum of the central angles of the first sector and the second sector is 360°, wherein the central angle of the second sector is between 100° and 140°.

[0009] As a further improvement of the present invention, the radius of the second sector is larger than the radius of the first sector.

[0010] As a further improvement of the present invention, the housing is of a slightly curved shape, and a light source cavity for accommodating the light source module is formed in the housing. The light source cavity is formed by a mounting surface, a first reflective surface and a second reflective surface and has a light outlet with the opening facing downward. The light source module is mounted on the mounting surface and the light source is positioned facing the light outlet.

[0011] As a further improvement of the present invention, the distance from the first reflective surface to the center of the housing is greater than the distance from the second reflective surface to the center of the housing. The first reflective surface is vertically arranged, and the second reflective surface is inclined and forms an acute angle with the horizontal plane towards the light source cavity.

[0012] As a further improvement of the present invention, both the light source and the lens are provided with multiple sets, the second light-emitting surface of each lens is disposed close to the first reflective surface, and the distance between the second light-emitting surface of each lens and the first reflective surface is equal.

[0013] As a further improvement of the present invention, a diffuser plate is also provided at the light outlet. The diffuser plate is not horizontally arranged, and the diffuser plate, the first reflective surface, the mounting surface and the second reflective surface are connected in sequence to form the light source cavity.

[0014] As a further improvement of the present invention, the housing further includes a light-shielding plate extending outward from the second reflective surface, and the connection between the light-shielding plate and the second reflective surface is connected to the diffuser plate.

[0015] To achieve the above objectives, the present invention also provides a lamp, which further includes a base, a lamp post, and an optical module as described above, wherein the lamp post is used to connect the optical module and the base.

[0016] The beneficial effects of this invention are: it can enhance the proportion of forward-projected light, so that the lighting light is concentrated in the working area, and at the same time, by reducing the optical height of the light source, the overall height of the lamp is reduced, thus improving the user experience. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the lamp of the present invention.

[0018] Figure 2 This is a schematic diagram of the optical module in the lamp of the present invention.

[0019] Figure 3 This is a structural schematic diagram of the optical module in the lamp of the present invention from another perspective.

[0020] Figure 4 yes Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0021] Figure 5 yes Figure 3 A schematic diagram of the structure after removing the diffuser plate.

[0022] Figure 6 yes Figure 5 A top-down view.

[0023] Figure 7This is a schematic diagram of the lens structure in the lamp of the present invention.

[0024] Figure 8 This is a schematic diagram of the cross-sectional structure of the lens in the lamp of the present invention.

[0025] Figure 9 This is a schematic diagram of the cross-sectional structure of the lens in the lamp of the present invention.

[0026] Figure 10 A top view of the lens structure in the lamp of this invention.

[0027] Figure 11 This is a schematic diagram of the optical path structure of the first part of the optical module in the lamp of the present invention.

[0028] Figure 12 This is a schematic diagram of the optical path structure of the second part of the optical module in the lamp of the present invention.

[0029] Figure 13 This is a schematic diagram of the optical path structure of the third part of the optical module in the lamp of the present invention.

[0030] Figure 14 This is a schematic diagram of the light distribution curve of the lamp of the present invention. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0033] Additionally, it should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] like Figures 1 to 14As shown, this invention discloses a lamp 100, preferably a table lamp. The lamp 100 includes a lamp head 101, a base 102, and a lamp post 103 connecting the lamp head 101 and the base 102. The lamp post 103 can adjust the lamp head 101 at any angle, including but not limited to adjusting the horizontal height, horizontal extension length, and illumination angle of the lamp head 101, which can be set as needed. The lamp head 101 also includes an optical module 104 for illumination, which has a large illumination area. For clarity, the specific structure of the lamp 100 will be described in detail below.

[0035] In a preferred embodiment of the present invention, the lamp head 101 further includes a decorative cover, and the optical module 104 is disposed inside the decorative cover to define the appearance of the lamp 100. The decorative cover is in the shape of a minor arc and the shape of the decorative cover is consistent with that of the optical module 104. The decorative cover is provided with a connecting structure connected to the lamp post 103. The connecting structure is located at the center of the decorative cover and outside the arc of the decorative cover, so that the center of the arc formed by the decorative cover faces the user. Here, the direction in which the lamp 100 faces the user is the forward direction.

[0036] like Figure 2 and Figure 3 As shown, the optical module 104 includes a housing 10, a light source module 20, and a diffuser plate 30, both of which are housed within the housing 10.

[0037] like Figures 4 to 6 As shown, the housing 10 also has a slightly curved shape, and a light source cavity for housing the light source module 20 is formed within the housing 10. The light source cavity has a mounting surface 11, a first reflecting surface 12, and a second reflecting surface 13. The mounting surface 11, the first reflecting surface 12, and the second reflecting surface 13 together enclose the light source cavity, and the light source cavity has a downward-facing light outlet. The mounting surface 11, the first reflecting surface 12, and the second reflecting surface 13 are all slightly curved and located on opposite sides of the mounting surface 11. This means that the first reflecting surface 12 and the second reflecting surface 13 are arranged along the radial direction of the housing 10; that is, the distance from the first reflecting surface 12 to the center of the housing 10 is greater than the distance from the second reflecting surface 13 to the center of the housing 10, and the horizontal extension length of the first reflecting surface 12 is greater than the horizontal extension length of the second reflecting surface 13. Of course, the mounting surface 11 can also reflect some light.

[0038] The mounting surface 11 is horizontally arranged, the first reflective surface 12 is vertically arranged, and the second reflective surface 13 is inclined and forms an acute angle with the horizontal surface toward the light source cavity.

[0039] Furthermore, a diffuser plate 30 is provided at the light outlet. One end of the diffuser plate 30 is located at the bottom of the first reflective surface 12, and the other end is located at the bottom of the second reflective surface 13. That is, the diffuser plate 30, the first reflective surface 12, the mounting surface 11, and the second reflective surface 13 are sequentially connected to form the light source cavity. In particular, the bottom of the first reflective surface 12 is at a lower level than the bottom of the second reflective surface 13, so that the diffuser plate 30 is not horizontally positioned and is tilted towards the center of the housing 10, allowing the light emitted by the light source to travel to a farther distance.

[0040] In other embodiments of the present invention, the housing 10 further includes a light-shielding plate 14 extending outward from the second reflective surface 13. The connection between the light-shielding plate 14 and the second reflective surface 13 is connected to the diffuser plate 30. The bottom of the light-shielding plate 14 is at a lower level than the bottom of the first reflective surface 12. This arrangement enables the light-shielding plate 14 to block light directed towards the user, preventing the light emitted by the light source from shining directly into the user's eyes.

[0041] like Figure 6 As shown, the light source module 20 includes a substrate 21, a light source, and a lens 22. The substrate 21 is mounted on the mounting surface 11 and has the same inferior arc shape as the mounting surface 11. Multiple light sources are arranged in an array on the substrate 21, and the light sources are positioned facing the light outlet, i.e., generating light vertically downwards. Preferably, the light source can be an LED bead, and the light sources are arranged in two rows in an arc shape. The distance between any one light source in each row and the second reflecting surface 13 or the first reflecting surface 12 is the same, which is equivalent to the arc shape of the light source having the same curvature as the arc shape of the housing 10.

[0042] Combination Figures 7 to 10 As shown, the lens 22 is hemispherical and covers the light source. The lens 22 is a diffuser type, used to redistribute the Lambertian light emitted by the light source, transforming it into a larger-angle light distribution shape, expanding the illumination area of ​​the light source, achieving the goal of illuminating a larger area with fewer light sources, and realizing uniform light emission. The lens 22 is made of acrylic and is integrally molded. Of course, the lens 22 can also be made of glass, PC, or other materials; no limitation is made here. In other embodiments of the present invention, the lens 22 can also be a stretchable type or other forms.

[0043] Combination Figure 8and Figure 9 As shown, the lens 22 has a light-incident surface 223 on the side facing the light source. The light-incident surface 223 is an approximately hemispherical curved surface that surrounds and forms a light source cavity for covering the light source. The lens 22 has a first light-exiting surface 221 on the side facing away from the light source. The first light-exiting surface 221 is a free-form surface, and its specific form can vary depending on the light distribution requirements. Specifically, both the light-incident surface 223 and the first light-exiting surface 221 are specially designed arc-shaped curved surfaces with varying curvatures. The direction of light illumination is controlled by the different curvature variations and thicknesses between the light-incident surface 223 and the first light-exiting surface 221, thereby ensuring uniform illumination on the illuminated surface.

[0044] Specifically, the light-incident surface 223 and the first light-exiting surface 221 are both centrally symmetrical and coaxially arranged. The center of the first light-exiting surface 221 is partially recessed towards the light-incident surface 223 along the axial direction. This arrangement weakens the light emitted by the light source directly above the lens 22, while reflecting the weakened light to other parts of the light-exiting surface, so as to make the light distribution more uniform.

[0045] In a preferred embodiment of the present invention, the first light-emitting surface 221 extends outward to form the second light-emitting surface 222. That is, from the horizontal plane, the orthographic projection of the first light-emitting surface 221 on the horizontal plane is a first fan shape, and the orthographic projection of the second light-emitting surface 222 on the horizontal plane is a second fan shape. In the vertical direction, the orthographic projection of the first light-emitting surface 221 in the vertical plane and the orthographic projection of the second light-emitting surface 222 in the vertical plane partially overlap.

[0046] Furthermore, the first light-emitting surface 221 and the second light-emitting surface 222 are continuous at the center of the lens 22, but not continuous on the side of the first light-emitting surface 221 outside the center of the lens 22. It is also understood that the geometric center of the light source is aligned with the center of the lens 22.

[0047] Combination Figure 10As shown, specifically, the sum of the central angle α of the first sector formed by the first light-emitting surface 221 and the central angle θ of the second sector formed by the second light-emitting surface 222 is 360°, and the central angle α of the first sector is greater than the central angle θ of the second sector. Thus, the first light-emitting surface 221 and the second light-emitting surface 222 are mirror-symmetric about an axis of symmetry. Simultaneously, the radius of the second sector is greater than the radius of the first sector. The central angle θ of the second sector is between 100-140°, preferably 120°. Of course, the angle of the minor arc formed by the housing 10 can also be the same as the central angle θ of the second sector; the specific setting can be made as needed and is not limited here.

[0048] Based on the above embodiments, since each light source in each row of light sources is equidistant from either the first reflecting surface 12 or the second reflecting surface 13, the second light-emitting surface 222 can also be equidistant from the second reflecting surface 13 in the arrangement of each lens 22, and the second light-emitting surface 222 is positioned close to the first reflecting surface 12. From the overall arrangement of the light sources, it is equivalent to the axis of symmetry of each lens 22 being arranged along the radial direction of the housing 10, thereby ensuring that each second light-emitting surface 222 is directly opposite the first reflecting surface 12.

[0049] like Figures 11 to 13 As shown, it should be noted that, taking a single light source and lens 22 as an example, the light emitted by a single light source can be divided into three parts after being diffused by the lens 22.

[0050] In this process, the light emitted from the first light-emitting surface 221 does not pass through the reflection of the second reflective surface 13, but is emitted directly at an angle. The first light-emitting surface 221 can stretch the emitted light laterally and deflect the light, so that the emitted light is not reflected by the second reflective surface 13 to the non-working area.

[0051] The second part of the light emitted through the second light-emitting surface 222 is reflected by the first reflective surface 12 and then emitted. The second light-emitting surface 222 can deflect the emitted light at a large angle to control the light in height, thereby reducing the horizontal height of the light reflected by the first reflective surface 12, so that the emitted light can illuminate forward to the maximum extent, thereby expanding the illumination range of the lamp 100 in the forward direction.

[0052] The third part is emitted through the area connecting the first light-emitting surface 221 and the second light-emitting surface 222 to illuminate the area directly below the light source module 20.

[0053] In summary, the present invention can enhance the proportion of forward-projected light, so that the illumination light is concentrated in the working area, thereby increasing the distance between the lamp 100 and the user and preventing the lamp 100 from occupying the working area. At the same time, by reducing the optical height of the light source, the overall height of the lamp 100 is reduced, thus improving the user experience.

[0054] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. An optical module, characterized in that: The device includes a housing (10) and a light source module (20). The housing (10) has a first reflective surface (12). The light source module (20) includes a light source and a lens (22) covering the light source. The lens (22) has an incident light surface (223) and a first light emitting surface (221). The first light emitting surface (221) partially protrudes outward to form a second light emitting surface (222). The first reflective surface (12) can reflect the emitted light from the second light emitting surface (222). The orthographic projection of the first light emitting surface (221) on the horizontal plane is a first sector. The orthographic projection of the second light emitting surface (222) on the horizontal plane is a second sector. The central angle of the first sector is greater than the central angle of the second sector. The radius of the second sector is greater than the radius of the first sector. The first light-emitting surface (221) and the second light-emitting surface (222) are continuous at the center of the lens (22), and the first light-emitting surface (221) and the second light-emitting surface (222) are not continuous outside the center of the lens (22). The orthographic projection of the first light-emitting surface (221) in the vertical plane partially overlaps with the orthographic projection of the second light-emitting surface (222) in the vertical plane. The housing (10) has a light source cavity for accommodating the light source module (20). The light source cavity is formed by a mounting surface (11), a first reflective surface (12), and a second reflective surface (13). The light source module (20) is mounted on the mounting surface (11). The first reflective surface (12) and the second reflective surface (13) are located on opposite sides of the mounting surface (11). The first reflective surface (12) is vertically arranged, and the second reflective surface (13) is inclined and forms an acute angle with the horizontal plane towards the light source cavity. The second light-emitting surface (222) is arranged close to the first reflective surface (12).

2. The optical module according to claim 1, characterized in that: The sum of the central angles of the first sector and the second sector is 360°, wherein the central angle of the second sector is between 100° and 140°.

3. The optical module according to claim 1, characterized in that: The housing (10) is in the shape of a slight arc, the light source cavity has a light outlet with the opening facing downwards, and the light source is positioned towards the light outlet.

4. The optical module according to claim 3, characterized in that: The distance from the first reflective surface (12) to the center of the housing (10) is greater than the distance from the second reflective surface (13) to the center of the housing (10).

5. The optical module according to claim 3, characterized in that: Both the light source and the lens (22) are provided with multiple sets. The second light-emitting surface (222) of each lens (22) is set close to the first reflective surface (12), and the distance between the second light-emitting surface (222) of each lens (22) and the first reflective surface (12) is equal.

6. The optical module according to claim 3, characterized in that: A diffuser plate (30) is also provided at the light outlet. The diffuser plate (30) is not horizontal. The diffuser plate (30), the first reflective surface (12), the mounting surface (11) and the second reflective surface (13) are connected in sequence to form the light source cavity.

7. The optical module according to claim 6, characterized in that: The housing (10) also includes a light-shielding plate (14) extending outward from the second reflective surface (13), and the connection between the light-shielding plate (14) and the second reflective surface (13) is connected to the diffuser plate (30).

8. A lamp, characterized in that: It also includes a base (102), a lamp post (103), and an optical module (104) as claimed in any one of claims 1-7, wherein the lamp post (103) is used to connect the optical module (104) and the base (102).

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