Optical module and lamp for close-range lighting

Abstract

The present application relates to an optical module and lamp for short-range lighting, comprising a lamp body, wherein a light source driver, a light-emitting panel, a focusing lens, a beam splitter, and a light-shielding grille are disposed within the lamp body; the lamp body is divided by a heat sink, wherein the light source driver is disposed on one surface of the heat sink, and the light-emitting panel is disposed on the other surface of the heat sink; the light source of the light-emitting panel is sequentially projected outward through the focusing lens, the beam splitter, and the light-shielding grille. The beneficial effects of the module include: the light-emitting panel, the focusing lens, the beam splitter, and the light-shielding grille are arranged close to the illumination area, achieving high illumination and uniformity within the illumination area, a low glare index, low surface brightness, and flexible installation.

Description

Technical Field

[0001] The present application relates to the field of LED lighting, and in particular to an optical module and lamp for close-range lighting. Background Art

[0002] With the continuous advancement of technology, people's demands for various daily necessities are gradually increasing. Existing blackboard lights used in schools typically feature several LED lights installed directly above the blackboard, covered by a reflective cover. However, these lights still present the following problems: Existing blackboard lights typically use floodlights, which are installed at a distance of approximately 0.8 meters. The surface brightness of the lamps is high, resulting in high glare and a UGR of approximately 35.6. The mounting structure is fixed and cannot be adjusted flexibly. Furthermore, the blackboard lights are installed above the teacher's head, which directly illuminates the teacher's eyes and can easily cause visual fatigue. Summary of the Invention

[0003] In order to solve the above-mentioned technical problems, the present application provides an optical module for short-range lighting, including a lamp body, in which a light source driver, a light-emitting panel, a focusing lens, a beam splitter, and a light-shielding grille are arranged; the lamp body is divided by a heat sink, the light source driver is arranged on one surface of the heat sink, and the light-emitting panel is arranged on the other surface of the heat sink; the light source of the light-emitting panel is projected outward through the focusing lens, the beam splitter, and the light-shielding grille in sequence.

[0004] Optionally, a first slot, a second slot, and a third slot are sequentially provided on both sides of the interior of the lamp body along the projection direction of the light source, the light-emitting board is inserted in the first slot and is adjacent to or abutting the heat dissipation plate, and the focusing lens is fixed on the light-emitting board; the beam splitter and the light-shielding grille are respectively arranged in the second slot and the third slot for fixation.

[0005] Optionally, the focusing lens is provided with a positioning pin and a buckle, and the focusing lens is mounted on the light-emitting panel via the positioning pin and the buckle.

[0006] Optionally, the first slot, the second slot, and the third slot are all arranged obliquely in the lamp body.

[0007] Optionally, an incident groove for placing a light source is dug on the upper surface of the focusing lens, the bottom of the incident groove is a focusing convex surface, and a first diffusion surface is dug on the lower surface of the focusing lens along the axial direction of the incident groove. A second diffusion surface is also connected around the first diffusion surface, and a reflecting surface is also connected between the second diffusion surface and the upper surface of the focusing lens.

[0008] Optionally, the first diffusion surface is an inclined surface or an arc surface, and the inclination angle of the transverse curve of the first diffusion surface is 0-40 degrees; the curvature of the transverse curve of the first diffusion surface gradually decreases along the direction of light; the longitudinal curve of the first diffusion surface can be a straight line or an inward concave curve.

[0009] Optionally, the transverse curve of the reflecting surface is an asymmetric curve, and the longitudinal curve of the reflecting surface is a symmetric curve.

[0010] Optionally, the first diffusion surface and the second diffusion surface are textured surfaces or beaded surfaces.

[0011] Optionally, a surface of the beam splitter away from the condenser lens is provided with at least one deformed aspheric surface.

[0012] Optionally, the curvature of the transverse curve of the deformed aspheric surface is 0.2-0.5, and the curvature of the longitudinal curve of the deformed aspheric surface is 0.5-1.25.

[0013] Optionally, the beam splitter is arranged not in contact with the condensing lens.

[0014] Optionally, one side surface of the light-shielding grille is adjacent to or abuts against the beam splitter, and the other side surface of the light-shielding grille projects the light source outward.

[0015] Optionally, the cross-section of the shading grille is wedge-shaped.

[0016] In addition, the present application also provides a lamp, including the above-mentioned optical module for short-range lighting, and also including a lamp holder, and two rotating components connecting the lamp holder to the two sides of the lamp body. The lamp holder is arranged at the lower opening, and the lamp body extends into the lamp holder along the opening of the lamp holder. The lamp holder and the lamp body are rotatably connected through a rotating component.

[0017] Optionally, the rotating assembly includes a first rotating member fixed to the lamp holder, and a second rotating member fixed to the lamp body, the second rotating member is provided with a rotating step, and the first rotating member is rotatably connected to the rotating step via a rotating shaft.

[0018] Optionally, the lamp holder is also connected to a wall-mounted bracket, which includes an inner sleeve, an outer sleeve, and a decorative outer shell. One end of the outer sleeve is fixed to the wall by bolts, and the decorative outer shell is sleeved on the outer sleeve. One end of the inner sleeve extends into the interior of the outer sleeve, and the other end of the inner sleeve is fixed to the lamp holder by bolts. The inner sleeve and outer sleeve are fixed by bolts.

[0019] A lamp according to claim 14, characterized in that the lamp holder is also connected to at least one hanging bracket, a slider is provided at one end of the hanging bracket, and the slider is slidably connected to a slide groove provided at the top of the lamp holder; the other end of the hanging bracket is fixed to the wall.

[0020] The present application provides an optical module and lamp for close-range lighting, and its beneficial effects are:

[0021] 1. This application refracts light onto the blackboard through the arrangement of light-emitting panels, focusing lenses, beam splitters, and light-shielding grilles, so that the lamp is within 0.2m of the blackboard, saving space. At the same time, when the teacher faces the students, the lamp is out of the visual range and will not cause visual interference.

[0022] 2. The light source of the light-emitting board of the present application is shaped in sequence by a focusing lens, a beam splitter, and a light-shielding grille, so that the light source can be efficiently and accurately illuminated on the blackboard area, so that the illumination in the blackboard area is high and uniform.

[0023] 3. The optical assembly and lamp of the present application, by disposing the beam splitter and the focusing lens in a non-contact manner, allows the overly bright light points on the focusing lens to be spread out in a surface on the beam splitter, thereby weakening the light. This arrangement can significantly reduce the surface brightness of the lamp.

[0024] 4. The first diffusion surface of the present application is formed by curves with different curvatures and inclination angles on the horizontal and vertical surfaces. The horizontal curved surface tightens the light and polarizes it on the blackboard, while the curved surface in the vertical direction expands the light, so that the light can illuminate a closer area more widely and evenly.

[0025] 5. The transverse curve of the reflective surface of the present application allows the light emitted from the reflective surface to be softly connected with the light emitted from the central convex focusing structure, so as to achieve the purpose of uniform transition; in the longitudinal curve direction of the reflective surface, the light on both sides is concentrated on the forward projection, the light angle is small, and the lighting distance is long.

[0026] 6. The lamp of the present application can rotate the lamp holder and the lamp body through the rotating assembly to adjust the light source angle of the lamp body to adapt to blackboards of various angles and sizes.

[0027] 7. The lamp of this application can be wall-mounted or ceiling-mounted. When wall-mounted, the horizontal direction can be freely adjusted to meet the needs of simultaneous use on different types of blackboards. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 An assembly diagram of a lamp according to an embodiment of the present application;

[0029] Figure 2 A horizontal schematic diagram of a lamp according to an embodiment of the present application;

[0030] Figure 3 This is a longitudinal schematic diagram of a lamp according to an embodiment of the present application;

[0031] Figure 4 An exploded view of a lamp according to an embodiment of the present application;

[0032] Figure 5 An exploded cross-sectional view of a lamp according to an embodiment of the present application;

[0033] Figure 6 An assembly cross-sectional view of a lamp body according to an embodiment of the application;

[0034] Figure 7 A schematic diagram of the longitudinal direction of the focusing lens of an embodiment of the present application;

[0035] Figure 8 A schematic diagram of the lateral direction of the focusing lens of an embodiment of the present application;

[0036] Figure 9 A schematic diagram of a transverse light beam of an optical module according to an embodiment of the present application;

[0037] Figure 10 A schematic diagram of longitudinal light rays of an optical module according to an embodiment of the application;

[0038] Figure 11 A schematic diagram of light projection of an optical module according to an embodiment;

[0039] Figure 12 An exploded schematic diagram of a rotating assembly according to an embodiment of the application;

[0040] Figure 13 A schematic structural diagram of a wall-mounted bracket according to an embodiment of the application;

[0041] Figure 14 Schematic diagram of the hanging bracket and lamp of the embodiment of the application;

[0042] Figure 15 UGR data table of the lamps of the application embodiment;

[0043] Figure 16 Illuminance distribution diagram of the lamp in the embodiment of the present application. DETAILED DESCRIPTION

[0044] The preferred embodiments of the present application are described in detail below in conjunction with the accompanying drawings to make the advantages and features of the present application easier to understand for those skilled in the art, thereby making a clearer definition of the scope of protection of the present application.

[0045] In such Figure 1-6In an embodiment, the present application provides an optical module for short-range lighting, comprising a lamp body 1, in which a light source driver 2, a light-emitting panel 3, a focusing lens 4, a beam splitter 5, and a light-shielding grille 6 are disposed; the lamp body 1 is divided by a heat sink, with the light source driver 2 disposed on one surface of the heat sink 11 and the light-emitting panel 3 disposed on the other surface of the heat sink 11; the light source of the light-emitting panel 3 is sequentially projected outward through the focusing lens 4, the beam splitter 5, and the light-shielding grille 6. In this embodiment, the light source driver 2, light-emitting panel 3, focusing lens 4, beam splitter 5, and light-shielding grille 6 of the present application are sequentially disposed in the lamp body 1, and the interior of the lamp body 1 is divided into two parts by the heat sink 11. One part of the lamp body 1 is used to house the light source driver 2, and the other part of the lamp body 1 is sequentially installed with the light-emitting panel 3, the focusing lens 4, the beam splitter 5, and the light-shielding grille 6. One surface of the light-emitting panel 3 is adjacent to or in contact with the heat sink 11, and the heat generated by the light-emitting panel 3 is dissipated through the heat sink 11; the other surface of the light-emitting panel 3 projects the light source outward. Among them, the heat sink 11 can be set at an angle, and the heat sink 11 can also be set horizontally. In the present embodiment, the heat sink 11 is set at an angle; so that the light source of the light-emitting panel 3 is tilted to project the light source outward. The light-emitting panel 3 can be an SMD patch lamp distributed in an array. In the present embodiment, the present application is set by the light-emitting panel 3, the focusing lens 4, the beam splitter 5, and the light-shielding grille 6 to refract the light to the blackboard, so that the lamp is within 0.2m of the blackboard, saving space, and at the same time, when the teacher faces the students, the lamp is not within the visual range and will not cause visual interference. The light source of the light-emitting panel 3 of the present application is shaped in sequence by the focusing lens 4, the beam splitter 5, and the light-shielding grille 6; so that the light source is efficiently and accurately irradiated on the blackboard area, so that the illumination in the blackboard area is high while also having high uniformity.

[0046] In some embodiments, see Figure 5-6The lamp body 1 has a first slot 12, a second slot 13, and a third slot 14, sequentially provided on both sides of the lamp body 1 along the light source projection direction. The light-emitting panel 3 is inserted into the first slot and positioned adjacent to or in contact with the heat sink 11. The focusing lens 4 is fixed to the light-emitting panel 3. The beam splitter 5 and the light-shielding grille 6 are respectively inserted into the second slot 13 and the third slot 14 for fixation. In this embodiment, the light-emitting panel 3, the beam splitter 5, and the light-shielding grille 6 are sequentially positioned in the first slot 12, the second slot 13, and the third slot 14 for fixation. The first slot 12, the second slot 13, and the third slot 14 are all arranged at an angle within the lamp body 1; the first slot 12, the second slot 13, and the third slot 14 maintain the same slope as the heat sink 11, ensuring that the beam splitter 5 and the light-shielding grille 6 have the same inclination as the light-emitting panel 3. The first slot 12 is provided on both sides of the lamp body 1 and is adjacent to the heat sink 11. The light-emitting panel 3 is inserted into the first slot 12 on both sides, and the surface of the light-emitting panel 3 not provided with the light source is adjacent to or in contact with the heat sink 11. The focusing lens 4 is provided with positioning pins and snaps, and the focusing lens 4 is installed on the light-emitting board 3 through the positioning pins and snaps. The positioning pins and snaps of the focusing lens 4 are set on the extension plate of the second diffusion surface of the focusing lens 4. There are two positioning pins and snaps in each, two positioning pins are set on both sides of the focusing lens 4, and two snaps are set on the other two sides of the focusing lens 4. The light-emitting board 3 is provided with positioning holes connected to the positioning pins and slots connected to the snaps; the focusing lens 4 is positioned in the positioning holes by the positioning pins, and the snaps are snapped into the slots, and is fixedly connected to the light-emitting board 3. Among them, one SMD patch lamp on the light-emitting board 3 corresponds to one focusing lens 4, and multiple focusing lenses 4 are installed in an array on the light-emitting board 3.

[0047] In some embodiments, see Figure 7-11 The top surface of the condenser lens 4 is carved into an entrance slot for accommodating the light source. The bottom of the entrance slot is a concave concave surface 43. The bottom surface of the condenser lens 4 is carved into a first diffusing surface 44, oriented along the axis of the entrance slot. A second diffusing surface 45 is connected to the first diffusing surface 44, and a reflective surface 46 is connected between the second diffusing surface 45 and the top surface of the condenser lens 4. In this embodiment, the incident light from the condenser lens 4 is projected through the concave concave surface 43 and the reflective surface 46. The concave concave surface 43 is an axisymmetric, convex curved surface that collects light and refracts it onto the first diffusing surface 44 for projection. The reflective surface 46 receives light from the side of the entrance slot and reflects it onto the second diffusing surface 45 for outward projection. The concave concave surface 43 illuminates the closer area, while the outer reflective surface 46 illuminates the farther area, ensuring accurate and continuous illumination of the illuminated area and reducing glare. The first diffusing surface 44 is an inclined or curved surface, with the transverse curve of the first diffusing surface 44 having an inclination angle of 0-40 degrees. See also Figure 7-11The horizontal curve of the first diffusion surface 44 evenly illuminates the light to a relatively close area. The vertical curve of the first diffusion surface 44 spreads the light so that the light can illuminate a relatively close area more widely. In this embodiment, the tilt angle is 20 degrees, which makes the light projection evenly projected onto the blackboard.

[0048] In one implementation of the above embodiment, the first diffusion surface is an inclined surface or an arc-shaped surface, and the inclination angle of the transverse curve of the first diffusion surface is 0-40 degrees; the curvature of the transverse curve of the first diffusion surface gradually decreases along the direction of the light; the longitudinal curve of the first diffusion surface can be a straight line or a concave curve. The first diffusion surface 44 of the present application is formed by lofting curves with different curvatures and inclination angles on the transverse and longitudinal surfaces. On the transverse plane, the curve is sloped, and the curvature gradually decreases as it approaches the illumination area, and the inclination direction of the curve points to the illumination area. On the longitudinal plane, the curve is straight, and optionally, the curve can also be concave.

[0049] In one embodiment of the above-mentioned embodiment, the transverse curve of the reflective surface is asymmetrical, while the longitudinal curve of the reflective surface is symmetrical. The transverse curve illuminates different areas on the side closer to the illumination area and the side farther from the illumination area. The side farther from the illumination area illuminates the farthest part of the illumination area, while the light on the side closer to the illumination area transitions from farther away to closer. This allows the light emitted by the reflective surface to connect gently with the light emitted by the central raised focusing structure, achieving a uniform transition. Because the illumination areas on both sides are different, the reflective surface is designed to achieve this effect. In the longitudinal direction of the curve, the light on both sides is concentrated and projected forward, resulting in a narrow light angle and a long illumination distance.

[0050] In one implementation of the above embodiment, the first diffusion surface and the second diffusion surface may be textured surfaces or beaded surfaces, which can soften the light.

[0051] In some embodiments, see Figure 9-10 , a surface of the beam splitter 5 away from the focusing lens 4 is provided with at least one deformed aspheric surface. In this embodiment, the surface of the beam splitter 5 away from the focusing lens 4 is the light exit surface of the beam splitter 5, and the light exit surface of the beam splitter 5 is provided with multiple deformed aspheric surface structures, and the multiple deformed aspheric surface structures are distributed in an array on the surface of the beam splitter 5. The curvature of the transverse curve of the deformed aspheric surface is 0.2-0.5. In this embodiment, Figure 8 As shown, the curvature of the transverse curve of the deformed aspheric surface is 0.35, which plays the role of softening the light emitted by the secondary condenser lens 4. The curvature of the longitudinal curve of the deformed aspheric surface is 0.5-1.25. In this embodiment, as shown in FIG. Figure 7 As shown, the curvature of the longitudinal curve of the deformed aspheric surface is 0.75, which plays a role in expanding the light in the longitudinal direction and ensuring uniform regional illumination.

[0052] In one implementation of the above embodiment, the beam splitter 5 is positioned away from the condenser lens 4. Some light sources converge on the surface of the condenser lens 4, causing the surface brightness of the condenser lens 4 to be excessively bright. Therefore, the present invention reduces the brightness of the luminaire by moving the beam splitter 5 away from the condenser lens 4. This arrangement significantly reduces the brightness of the luminaire surface.

[0053] In some embodiments, one side of the light-shielding grille 6 is adjacent to or abuts the beam splitter 5, and the other side of the light-shielding grille 6 projects the light source outward. The cross-section of the light-shielding grille 6 is wedge-shaped. In this embodiment, the wedge-shaped cross-section of the light-shielding grille 6 is lower on the side close to the lighting area and higher on the side away from the lighting area, thereby making the lighting area brighter and reducing glare away from the lighting area. Among them, the light-shielding grille 6 is provided with a 50° shading angle so that the light source is accurately projected onto the lighting area. It ensures that the lighting area is not blocked and emits light normally, and the light-shielding grille 6 is set to a 50° shading angle away from the lighting area to reduce glare away from the lighting area.

[0054] In the embodiment shown in the figure, the present application also provides a lamp, see Figure 1-5 The optical module for short-range lighting includes a lamp holder 7 and two rotating assemblies 8 connecting the lamp holder 7 to two sides of a lamp body 1. The lamp holder 7 is disposed downwardly, and the lamp body 1 extends into the lamp holder 7 along the opening of the lamp holder 7. The lamp holder 7 and the lamp body 1 are rotatably connected via the rotating assemblies 8. The lamp holder 7 can be fixedly connected or rotatably connected to the lamp body 1 via the rotating assemblies 8, and can be rotated according to the position of the lighting area.

[0055] In some of the above embodiments, see Figure 12 The rotating assembly 8 includes a first rotating member 81 fixed to the lamp holder 7 and a second rotating member 82 fixed to the lamp body 1. The second rotating member 82 is provided with a rotation step, and the first rotating member 81 is rotatably connected to the rotation step via a rotating shaft 83. In this embodiment, the present application uses the rotating assembly 8 to rotatably connect the lamp holder 7 and the lamp body 1. The first rotating member 81 is arranged on the rotation step of the second rotating member 82 and is connected via a rotating shaft 83. The rotating shaft 83 can be a damping rotating shaft 83 with high damping, so that the first rotating member 81 is fixed in a fixed position when not rotating. The rotating shaft 83 can also be a bolt connected between the first rotating member 81 and the second rotating member 82, allowing the first and second rotating members 81, 82 to rotate within the locking range of the bolt. The first and second rotating members 81, 82 are arranged in an arc shape relative to each other, allowing the second rotating member 82 to rotate on the first rotating member 81. The first rotating member 81 is also provided with a scale to detect the rotation angle or to rotate according to the desired angle.

[0056] In some of the above embodiments, see Figure 13 The lamp holder 7 is also connected to a wall-mount bracket 9. The wall-mount bracket 9 comprises an inner sleeve 91, an outer sleeve 92, and a decorative outer shell 93. One end of the outer sleeve 92 is fixed to the wall via bolts, and the decorative outer shell 93 is sleeved onto the outer sleeve 92. One end of the inner sleeve 91 extends into the interior of the outer sleeve 92, and the other end of the inner sleeve 91 is fixed to the lamp holder 7 via bolts. The inner sleeve 91 and outer sleeve 92 are fixed together by bolts. In this embodiment, the lamp holder 7 is fixed to the wall via the wall-mount bracket 9. The wall-mount bracket 9 can be adjusted to expand the actual lighting area by cooperating with the inner sleeve 91 and outer sleeve 92. The inner sleeve 91 can be provided with a linear fixing slot or multiple neatly arranged first fixing holes, and the outer sleeve 92 can be provided with second fixing holes corresponding to the fixing slots or first fixing holes. After the outer sleeve 92 and inner sleeve 91 are adjusted to the appropriate position, they are fixed by bolting into the second fixing holes and the fixing slots or first fixing holes.

[0057] In some of the above embodiments, see Figure 14 The lamp holder 7 is also connected to at least one hanging bracket 10. One end of the hanging bracket 10 is provided with a slider that slides into a groove provided at the top of the lamp holder 7. The other end of the hanging bracket 10 is fixed to the wall. In this embodiment, the lamp holder 7 can be fixed to the wall via the hanging bracket 10. One end of the hanging bracket 10 is fixedly connected to the wall, and the other end of the hanging bracket 10 is connected to the top of the lamp holder 7 via a slider. The number of hanging brackets 10 can be one or more. In this embodiment, the number of hanging brackets 10 is two. The two hanging brackets 10 are respectively provided at both ends of the lamp holder 7. At the same time, the two hanging brackets 10 can be rotated on the lamp holder 7 via the slider.

[0058] The present application provides an optical module and lamp for close-range lighting, such as Figure 15-16The light panel 3, focusing lens 4, beam splitter 5, and light-shielding grille 6 are configured to refract light onto the blackboard, placing the lamp within 0.2 meters of the blackboard. This saves space and prevents the lamp from obstructing the view of students while the teacher is facing them. The light source of the light panel 3 is sequentially shaped by the focusing lens 4, beam splitter 5, and light-shielding grille 6, allowing the light source to efficiently and accurately illuminate the blackboard area, achieving high illumination and uniformity across the entire area. The optical assembly and lamp of this application, by distancing the beam splitter 5 and the focusing lens 4 from contact, disperses any excessively bright light points on the focusing lens 4 onto the beam splitter 5, thereby reducing their brightness. This arrangement significantly reduces the surface brightness of the lamp. The lamp of this application can be rotated by the rotating assembly 8, rotating the lamp holder 7 and lamp body 1 to adjust the light source angle of the lamp body 1 to accommodate blackboards of various angles and sizes. The lamp of this application can be wall-mounted or ceiling-mounted. When wall-mounted, the horizontal direction can be freely adjusted, allowing for simultaneous use on various blackboards. At present, the UGR of the blackboard lamp in the industry reaches 35.6 under the condition of 4H8H. Figure 15 Under the same 4H8H operating conditions, the UGR of the lamp in this application is only 11.9, showing a significant reduction. At the same time, under the same 35W power, the current industry average illumination of blackboard lamps is 604 and the uniformity is 0.72. The lamp in this application uses a focusing lens and a beam splitter to provide efficient and accurate lighting, raising the average illumination to 803 and the uniformity to 0.87, significantly improving the light parameters.

[0059] See also Figure 1-3 As shown, the horizontal direction of this application is as follows Figure 2 The longitudinal direction is as shown in Figure 3 In the direction shown, the transverse curve and transverse surface are Figure 2 The curves and surfaces shown have the same direction; the longitudinal curves and longitudinal surfaces are Figure 3 The curves and surfaces shown have the same direction. The curved surface of the present application can be formed by fitting a transverse curve or a longitudinal curve. The transverse curve and longitudinal curve of the present application are relative concepts. The transposition, interchange or other transformation of the transverse curve and longitudinal curve to form a curved surface are all within the scope of protection of the present application.

[0060] The above describes the implementation methods of the present application in detail in conjunction with the accompanying drawings, but the present application is not limited to the above implementation methods. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present application.

Claims

1. An optical module for close-range lighting, characterized in that: The lamp comprises a lamp body, wherein a light source driver, a light-emitting panel, a focusing lens, a beam splitter, and a light-shielding grille are provided in the lamp body; the lamp body is divided by a heat sink, the light source driver is provided on one surface of the heat sink, and the light-emitting panel is provided on the other surface of the heat sink; the light source of the light-emitting panel is projected outward through the focusing lens, the beam splitter, and the light-shielding grille in sequence; a surface of the beam splitter away from the focusing lens is provided with at least one deformed aspheric surface, and a surface of the beam splitter away from the focusing lens is the light-emitting surface of the beam splitter, and the light-emitting surface of the beam splitter is provided with a plurality of deformed aspheric surface structures, and the plurality of deformed aspheric surface structures are distributed in an array on the surface of the beam splitter; the light emitted from the secondary focusing lens is softened again; An incident groove for placing a light source is dug out on the upper surface of the focusing lens, and the bottom of the incident groove is a focusing convex surface. A first diffusion surface is dug out on the lower surface of the focusing lens along the axial direction of the incident groove. A second diffusion surface is also connected around the first diffusion surface, and a reflecting surface is also connected between the second diffusion surface and the upper surface of the focusing lens; the first diffusion surface is an inclined surface or an arc surface, and the curvature of the transverse curve of the first diffusion surface gradually decreases along the direction of light; the longitudinal curve of the first diffusion surface is a straight line or an inward concave curve; the transverse curve of the reflecting surface is an asymmetric curve, and the longitudinal curve of the reflecting surface is a symmetric curve; the first diffusion surface and the second diffusion surface are etched surfaces or beaded surfaces.

2. The optical module for close-range lighting according to claim 1, characterized in that: A first slot, a second slot, and a third slot are sequentially provided on both sides of the interior of the lamp body along the projection direction of the light source. The light-emitting board is inserted in the first slot and is adjacent to or abuts the heat dissipation plate. The focusing lens is fixed on the light-emitting board; the beam splitter and the light-shielding grille are respectively arranged in the second slot and the third slot for fixation.

3. The optical module for close-range lighting according to claim 2, characterized in that: The condenser lens is provided with a positioning pin and a buckle, and the condenser lens is mounted on the light-emitting board through the positioning pin and the buckle.

4. The optical module for close-range lighting according to claim 2, characterized in that: The first slot, the second slot and the third slot are all arranged obliquely in the lamp body.

5. The optical module for close-range lighting according to claim 1, characterized in that: The inclination angle of the transverse curve of the first diffusion surface is 0-40 degrees.

6. The optical module for close-range lighting according to claim 1, characterized in that: The curvature of the transverse curve of the deformed aspheric surface is 0.2-0.5, and the curvature of the longitudinal curve of the deformed aspheric surface is 0.5-1.

25.

7. The optical module for close-range lighting according to claim 1, characterized in that: The beam splitter is arranged not in contact with the condensing lens.

8. The optical module for close-range lighting according to claim 1, characterized in that: One side surface of the light-shielding grille is adjacent to or abuts against the beam splitter, and the other side surface of the light-shielding grille projects the light source outward.

9. The optical module for close-range lighting according to claim 8, characterized in that: The cross section of the light-shielding grille is wedge-shaped.

10. A lamp, characterized in that: An optical module for short-range lighting comprising the optical module of any one of claims 1 to 9, further comprising a lamp holder, and two rotating assemblies connecting the lamp holder to two sides of a lamp body, wherein the lamp holder is arranged downwardly, and the lamp body extends into the lamp holder along the opening of the lamp holder, and the lamp holder and the lamp body are rotatably connected via a rotating assembly.

11. The lamp according to claim 10, characterized in that: The rotating assembly includes a first rotating member fixed to the lamp holder and a second rotating member fixed to the lamp body. The second rotating member is provided with a rotating step, and the first rotating member is rotatably connected to the rotating step via a rotating shaft.

12. The lamp according to claim 10, characterized in that: The lamp holder is also connected to a wall-mounted bracket, which includes an inner sleeve, an outer sleeve, and a decorative outer shell. One end of the outer sleeve is fixed to the wall by bolts, and the decorative outer shell is sleeved on the outer sleeve. One end of the inner sleeve extends into the interior of the outer sleeve, and the other end of the inner sleeve is fixed to the lamp holder by bolts. The inner sleeve and outer sleeve are fixed by bolts.

13. The lamp according to claim 10, characterized in that: The lamp holder is also connected to at least one hanging bracket, one end of which is provided with a slider, which is slidably connected to a slide groove provided on the top of the lamp holder; the other end of the hanging bracket is fixed to the wall.

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