Soft light lens and production process thereof

Abstract

The invention relates to the fields of optical lenses, manufacturing processes, illumination technologies and the like, in particular to a soft light lens and a production process thereof, the soft light lens comprises a lens body, an incident part and an emergent part, and the lens body is provided with an incident surface, an emergent surface and a side surface; the incident part is arranged on the incident surface, and the width of the incident part is gradually reduced in the direction from the incident surface to the emergent surface; the incident part is provided with a first arc-shaped part, and the width of the emergent part is gradually reduced in the direction from the emergent surface to the incident surface; the side face is provided with a plurality of first protruding parts, and the surface areas of the first protruding parts are gradually increased in the direction from the light inlet face to the light outlet face. The emergent part is provided with a second arc-shaped part and a third arc-shaped part, and the third arc-shaped part surrounds the second arc-shaped part; a plurality of second convex parts are arranged on the second arc-shaped part and are uniformly distributed; and the third arc-shaped part is provided with a grain area. By means of the scheme, the problem that when an existing lens provides soft illumination, no bright ring, no layering, high efficiency and small size are difficult to meet at the same time can be solved.

Description

Technical Field

[0001] The present application relates to the fields of optical lenses and manufacturing processes, lighting technology, and in particular to a soft light lens and its production process. Background Art

[0002] Most lenses on the market today focus on focusing effects, but in some application scenarios, soft and uniform lighting effects are required, such as home lighting, office lighting, commercial space lighting, educational lighting, medical lighting, art exhibition lighting, photography and film and television production, and indoor plant lighting. Existing lenses often produce bright circles or stratification, affecting the quality of light.

[0003] Traditional lens designs often achieve focusing or diffusion of light by adjusting the lens curvature and material, but there is still room for improvement in the pursuit of soft lighting effects.

[0004] When providing soft illumination, existing lenses often fail to meet the requirements of no bright ring, no delamination, high efficiency and small size at the same time. In order to improve the problem that existing lenses are difficult to simultaneously meet the requirements of no bright ring, no stratification, high efficiency and small size when providing soft lighting, the present application provides a soft light lens and a production process thereof.

[0005] In a first aspect, the present application provides a soft light lens, which adopts the following technical solution: A soft light lens comprises a lens body, wherein the lens body has a light incident surface and a light emitting surface, and a side surface connecting the light incident surface and the light emitting surface; and further comprises: An incident portion, the incident portion is arranged on the light incident surface, and the width of the incident portion is gradually reduced from the light incident surface to the light emitting surface; the incident portion is provided with a first arc-shaped portion; An emitting portion, the emitting portion is arranged opposite to the incident portion, and the width of the emitting portion is gradually reduced from the light emitting surface to the light incident surface; The side surface has a plurality of first protrusions, and the surface areas of the plurality of first protrusions gradually increase along the direction from the light incident surface to the light emitting surface; The emission portion is provided with a second arc-shaped portion and a third arc-shaped portion, and the third arc-shaped portion is arranged to surround the second arc-shaped portion; The second arc-shaped portion is provided with a plurality of second protrusions, and the plurality of second protrusions extend toward the third arc-shaped portion with the lens optical axis as the center point; The third arc-shaped portion has a texture area.

[0006] By adopting the above technical solution, the first arc-shaped portion is used to focus parallel light rays to a point, or convert light rays emitted by a point light source into a parallel light beam; the multiple second raised portions on the second arc-shaped portion are used to change the shape and distribution of the light beam to achieve more precise light beam control; the textured area on the third arc-shaped portion is used to change the propagation direction of the light, so that the light beam is scattered on the lens surface; specifically, the light beam enters from the incident portion, is refracted and dispersed through the first arc-shaped portion, most of the light beams are evenly scattered through the multiple second raised portions on the second arc-shaped portion, some light beams are evenly scattered through the textured area on the third arc-shaped portion, and at the same time, the light beams emitted from the first raised portion on the side are also evenly scattered, and the light beams are emitted through three lens surfaces of different regular shapes, which can produce a soft transition light spot, and the volume of the integrated lens is also reduced, thereby improving the problem that the existing lenses are difficult to simultaneously meet the requirements of no bright circle, no stratification, high efficiency and small volume when providing soft lighting.

[0007] Optionally, a target light beam is provided at the incident portion of the lens body, the lens body has a central axis, an angle between the target light beam and the central axis is γ, and a value of γ is 15°*x; The value range of x is 0.8 to 1.2; and / or; The value of γ is 15°*x; The value range of x is 1.4 to 1.8; and / or; The value of γ is 15°*x; The value range of x is 2.2 to 2.6; and / or; The value of γ is 15°*x; The value of x is 3.66~4.33.

[0008] By adopting the above technical solution, the angle γ between the target light beam and the central axis adopts the above-mentioned angles, the photoelectric utilization rate can reach 88%, and the total power collected by the light distribution can reach between 608 and 611 lm. The high-power light source can provide a higher brightness, which is suitable for scenes requiring high-brightness lighting. While ensuring the brightness, the high-power light distribution collection also shows that the energy efficiency of the light source is relatively high, which helps to reduce energy consumption and energy costs. It can also provide a wider lighting range, making the lighting effect more uniform, reducing dark areas, and improving lighting quality. It can also better adapt to various lighting needs and provide more professional lighting effects. It can also provide sufficient brightness, reduce glare, and improve visual comfort. It also helps to improve the stability and life of the light source and reduce maintenance costs. It can also provide sufficient brightness to ensure good lighting effects under all weather and environmental conditions.

[0009] Optionally, the surface of the lens body is treated with diffuse reflection.

[0010] By adopting the above technical scheme, the microstructure of the lens surface is changed through diffuse reflection treatment, that is, frosting treatment is performed; frosting treatment is performed to form a tiny irregular structure on the surface, thereby softening the light spot. Although it causes a certain degree of decrease in the light energy utilization efficiency, about 88% of the light energy utilization rate is achieved, the light spot is softened and the lens volume is reduced; combined with the lens structure such as the first raised portion, the second raised portion and the textured area provided in the lens, soft lighting can be achieved while achieving lighting without bright circles and stratification, thereby improving the energy efficiency of the light source; frosting treatment can also effectively reduce mirror reflection, improve the anti-glare performance of the lens, and increase the diffuse reflection of light, making the light softer and more uniform, reducing glare and improving visual comfort.

[0011] Optionally, the distance between the light incident surface and the first arc-shaped portion is D1, and the value range of D1 is 5.8-7.2 mm; the incident portion has a diameter L1, and the value range of L1 is 15.2-16.9 mm; The emission portion has a diameter L2, and the value range of L2 is 34-36 mm.

[0012] By adopting the above technical solution, the distance D1 between the light incident surface and the first arc-shaped portion is between 5.8 and 7.2 mm, the diameter L1 of the incident portion is between 15.2 and 16.9 mm, and the diameter L2 of the exit portion is between 34 and 36 mm. The light spot can be softened while the volume of the lens is reduced.

[0013] In a second aspect, the present application provides a production process for a soft light lens, which is applied to the first aspect and adopts the following technical solution: A production process of a soft light lens comprises the following steps: S1: According to the diameter L1 of the incident part, L1 is between 15.2 and 16.9 mm, and the diameter L2 of the exit part, L2 is between 34 and 36 mm, a cylindrical lens with a trapezoidal shape is prepared by close grinding, laser processing, or thermoforming, and an incident part and an exit part are provided; S2: opening a first arc-shaped portion, and forming the first arc-shaped portion by close grinding or laser processing; S3: performing convex processing on the side surface of the lens body by close grinding or laser processing to form a plurality of first convex portions, wherein the surface areas of the plurality of first convex portions gradually increase along the direction from the light incident surface to the light exit surface; S4: processing the emission portion by close grinding or laser processing to form a second arc-shaped portion and a third arc-shaped portion, and simultaneously performing convex processing to form a second convex portion; S5: Processing the third arc-shaped portion by close grinding or laser processing to form a texture area; S6: Process the surface of the lens body and perform frosting to obtain a soft light lens.

[0014] In a third aspect, the present application provides a soft light lens, comprising a lens body, wherein the lens body has a light incident surface and a light emitting surface, and a side surface connecting the light incident surface and the light emitting surface; and further comprising: A guiding part, the guiding part is molded on the light incident surface of the lens body, and the guiding part is used to guide the light source to be evenly divergent after reflection; The guide portion has a plurality of input accommodating portions, and the input accommodating portions are used to accommodate the light source; The lens body has a fourth arc-shaped portion and a fifth arc-shaped portion The fourth arc-shaped portion is close to the light incident surface, the fifth arc-shaped portion is close to the light exiting surface, and the fourth arc-shaped portion and the fifth arc-shaped portion are respectively used to uniformly diverge the light beam; The guiding portion has a reflection enhancing portion, and the reflection enhancing portion is used to guide the light beam to be reflected back into the guiding portion.

[0015] By adopting the above technical solution, the light source is placed in the input accommodation part, and after being guided and reflected by the guide part, the light source is evenly dispersed to the light incident surface of the lens body, and the evenly dispersed light beam falls on the light incident surface of the transparent body, and the light beam is evenly dispersed through the fourth arc-shaped part of the lens, and then further evenly dispersed through the fifth arc-shaped part, thereby realizing soft light illumination. Furthermore, the reflection-enhancing part is provided, which can reflect the illumination light beam back to the guide part, avoiding excessive leakage of the light beam, thereby improving the lighting efficiency.

[0016] Optionally, the lens body has a diameter L3, and the value range of L3 is 60 to 120 mm; The guide portion has a diameter L4, L4=L3; The distance between the light incident surface and the light emitting surface is D2, and the value range of D2 is 2 to 4 mm; The fourth arc-shaped portion has a curvature radius, and the curvature radius ranges from 37 to 75 mm.

[0017] By adopting the above technical solution, the light source is placed in the input accommodating part, and the light source is evenly diverged to the light incident surface of the lens body after being guided and reflected by the guide part. The evenly distributed light beam falls on the light incident surface of the transparent body, and the light beam is evenly diverged through the fourth arc-shaped part of the lens, and then further evenly diverged through the fifth arc-shaped part, thereby realizing soft light illumination. It can achieve a uniform soft light illumination effect with small end face input and large end face output, and reduce the volume.

[0018] Optionally, the guiding portion has an input end face, the light beam enters the guiding portion from the input end face at an angle α, the light beam has a divergence angle, the divergence angle is 2α, and the value range of the divergence angle is 60° to 80°; The refractive index of the guide portion is n, and the value of n is 1.49. The angle between the upper surface and the lower surface of the guide portion is 2β, and the value range of 2β is 1° to 5°.

[0019] By adopting the above technical solution, the guiding part can achieve better uniform soft light illumination. The light beam enters the guiding part from the input end face, undergoes multiple total internal reflections, and finally destroys the lower surface of the total internal reflection guiding part to be emitted, thereby achieving uniform divergence of the illumination light. The divergence angle of the light beam is within the above range, and the angle between the upper surface and the lower surface of the waveguide plate is within the above range, thereby achieving better uniform divergence of the illumination light and improving the illumination efficiency.

[0020] Optionally, the fourth arc-shaped portion has a plurality of third protrusions, and the plurality of third protrusions are evenly distributed on the surface of the fourth arc-shaped portion; The fifth arc-shaped portion has a plurality of fourth protrusions, and the plurality of fourth protrusions are evenly distributed on the fourth arc-shaped portion; the surface areas of the plurality of third protrusions and the plurality of fourth protrusions are respectively equal to m, and the value range of m is 0.15 to 0.2 mm 2 .

[0021] By adopting the above technical solution, the third convex portion is arranged on the fourth arc-shaped portion, and the fourth convex portion is arranged on the fifth arc-shaped portion, and the surface area is m between 0.15 and 0.2 mm 2 The light beam enters the light incident surface of the transparent body from the lower surface of the guiding portion, and is evenly diverged through the multiple third protrusions on the fourth arc-shaped portion of the lens. Then, the light beam is evenly diverged through the multiple fourth protrusions on the fifth arc-shaped portion, producing a light spot with a soft transition. The volume of the integrated lens is also reduced, thereby improving the problem that the existing lens is difficult to simultaneously meet the requirements of no bright circle, no stratification, high efficiency and small volume when providing soft lighting.

[0022] In a fourth aspect, the present application provides a production process for a soft light lens, which is applied to the third aspect and adopts the following scheme: a production process for a soft light lens, comprising the following steps: S1: Prepare a guide portion and a lens body, select a value in the range of 60 to 120 mm according to the diameter L3 of the lens body, select a value in the range of L3 for the diameter L4 of the guide portion, select a value in the range of L4 for the distance D2 between the light incident surface and the light exit surface, select a value in the range of 2 to 4 mm for the radius of curvature of the fourth arc-shaped portion, and select a value in the range of 70 to 75 mm, and obtain the guide portion and the lens body by close grinding, laser processing, or thermoforming; S2: Processing the guide part, according to the divergence angle of the light beam, taking a value in the divergence angle range of 60° to 80°, opening an input accommodating cavity, and then arranging a reflection enhancement part; S3: Processing the lens body by grinding or laser processing the lens body to obtain the fourth arc-shaped portion and the fifth arc-shaped portion. S4: processing the fourth arc-shaped portion and the fifth arc-shaped portion respectively, and forming a plurality of third convex portions and a plurality of fourth convex portions respectively by means of close grinding or laser processing; S5: molding the guide portion onto the lens body to obtain a soft light lens; S6: When in use, place the light source in a plurality of input receiving portions to form a combined light beam.

[0023] In summary, this application has the following beneficial effects: 1. By setting the incident part, the exit part, the first convex part, the first arc-shaped part, the second arc-shaped part, the third arc-shaped part, the second convex part and the texture area, the light beam enters from the incident part, is refracted and dispersed by the first arc-shaped part, most of the light beams are evenly scattered by the multiple second convex parts on the second arc-shaped part, some light beams are evenly scattered by the texture area on the third arc-shaped part, and at the same time, the light beam emitted from the first convex part on the side is also evenly scattered. The light beam is emitted through three lens surfaces of different regular shapes, which can produce a soft transition light spot, and the volume of the integrated lens is also reduced, thereby improving the problem that the existing lens is difficult to simultaneously meet the requirements of no bright circle, no stratification, high efficiency and small volume when providing soft lighting.

[0024] 2. The angle γ between the target light beam and the central axis adopts the above-mentioned angles, and the photoelectric utilization rate can reach 88%, and the total power collected by the light distribution can reach between 608 and 611 lm. The high-power light source can provide a higher brightness, which is suitable for scenes requiring high-brightness lighting. While ensuring the brightness, the high-power light distribution collection also shows that the energy efficiency of the light source is relatively high, which helps to reduce energy consumption and energy costs. It can also provide a wider lighting range, make the lighting effect more uniform, reduce dark areas, and improve lighting quality. It can also better adapt to various lighting needs and provide more professional lighting effects. It can also provide sufficient brightness, reduce glare, and improve visual comfort. It also helps to improve the stability and life of the light source and reduce maintenance costs. It can also provide sufficient brightness to ensure good lighting effects under all weather and environmental conditions.

[0025] 3. The microstructure of the lens surface is changed through diffuse reflection treatment, that is, frosting treatment is performed to form a tiny irregular structure on the surface, thereby softening the light spot. Although it leads to a certain degree of decrease in the light energy utilization efficiency, about 88% of the light energy utilization rate, the light spot is softened and the lens volume is reduced; combined with the lens structure such as the first raised portion, the second raised portion and the textured area of ​​the lens, soft lighting can be achieved while achieving lighting without bright circles and stratification, thereby improving the energy efficiency of the light source; frosting treatment can also effectively reduce mirror reflection, improve the anti-glare performance of the lens, and increase the diffuse reflection of light, making the light softer and more uniform, reducing glare and improving visual comfort.

[0026] 4. The distance D1 between the light incident surface and the first arc-shaped portion is between 5.8 and 7.2 mm, the diameter L1 of the incident portion is between 15.2 and 16.9 mm, and the diameter L2 of the exit portion is between 34 and 36 mm. This can soften the light spot while reducing the size of the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is an overall structural view of the first embodiment; Figure 2 is a cut-away cross-sectional view of the first embodiment; Figure 3 is a plan view of the incident portion in the first embodiment; Figure 4 is a plan view of the emission portion in the first embodiment; Figure 5 is a cross-sectional view of the lens body of Example 2; Figure 6 is a dimension annotation view of the lens body of Embodiment 2; Figure 7 is a spectrum diagram of the target light beam of Example 1; Figure 8 is a light distribution curve diagram of a 15° target light beam in Example 1; Fig. 9 This is the simulated spot diagram of the 15° target light beam in the first embodiment.

[0028] Description of reference numerals: 1. Lens body; 11. Light incident surface; 12. Light emitting surface; 13. Side surface; 130. First raised portion; 2. Incident portion; 21. First arc-shaped portion; 3. Exit portion; 31. Second arc-shaped portion; 32. Third arc-shaped portion; 33. Second raised portion; 34. Textured area; 4. Target light beam; 5. Guide portion; 51. Input accommodating portion; 52. Reflection enhancing portion; 6. Fourth arc-shaped portion; 61. Third raised portion; 7. Fifth arc-shaped portion; 71. Fourth raised portion. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-6 This application is described in further detail.

[0030] Embodiment 1: In the first aspect, the present application embodiment discloses a soft light lens, see Figure 1 and Figure 2 , including a lens body, the lens body having a light incident surface, a light emitting surface, and a side surface connecting the light incident surface and the light emitting surface.

[0031] A soft light lens also includes an incident portion 2 and an exit portion 3. The incident portion 2 is arranged on a light incident surface 11, and the width of the incident portion 2 is gradually reduced from the light incident surface 11 to the light exit surface 12; the incident portion 2 is provided with a first arc-shaped portion 21; the exit portion 3 is arranged relative to the incident portion 2, and the width of the exit portion 3 is gradually reduced from the light exit surface 12 to the light incident surface 11; a plurality of first protrusions 130 are provided on the side surface 13, and the surface area of ​​the plurality of first protrusions 130 gradually increases along the direction from the light incident surface 11 to the light exit surface 12; the exit portion 3 is provided with a second arc-shaped portion 31 and a third arc-shaped portion 32, and the third arc-shaped portion 32 is arranged to surround the second arc-shaped portion 31; a plurality of second protrusions 33 are provided on the second arc-shaped portion 31, and the plurality of second protrusions 33 extend toward the third arc-shaped portion 32 with the lens optical axis as the center point; and a textured area 34 is provided on the third arc-shaped portion 32. In this embodiment, the lens body is made of PMMA material, specifically polymethyl methacrylate, which is a colorless and transparent thermoplastic. It is usually called organic glass, acrylic or acrylic. PMMA has good light transmittance, weather resistance, chemical resistance and mechanical strength.

[0032] Specifically, the incident portion 2 is specifically an incident cavity, and the exit portion 3 is specifically an exit cavity; the first arc-shaped portion 21 is specifically a first curved surface, and the second arc-shaped portion 31 is specifically a second curved surface; the third arc-shaped portion 32 is specifically a third curved surface; the first protrusion 130 is specifically a square protrusion convexly provided on the side surface 13 of the lens body 1; the second protrusion 33 is specifically a honeycomb-shaped polygonal protrusion on the second arc-shaped portion 31; the texture area 34 on the third arc-shaped portion 32 is specifically a curved texture cross-opened on the lens body 1.

[0033] See also Figure 2 , further, the surface of the lens body 1 is subjected to diffuse reflection treatment.

[0034] Specifically, the surface of the lens body 1 is diffusely reflected, specifically, frosted. The frosted treatment changes the microstructure of the lens surface, so that a tiny irregular structure is formed on the surface, thereby softening the light spot. Although it causes a certain degree of decrease in the efficiency of light energy utilization, about 88% of the light energy utilization rate is achieved, the light spot is softened and the volume of the lens is reduced. Combined with the lens structure such as the first raised portion 130, the second raised portion 33 and the textured area 34 of the lens, soft lighting can be achieved while achieving lighting without bright circles and stratification, thereby improving the energy efficiency of the light source. The frosted treatment can also effectively reduce mirror reflection, improve the anti-glare performance of the lens, and increase the diffuse reflection of light, making the light softer and more uniform, reducing glare and improving visual comfort.

[0035] See also Figures 2 to 4 , further, the distance between the light incident surface 11 and the first arc-shaped portion 21 is D1, and the value range of D1 is 5.8 to 7.2 mm; the incident portion 2 has a diameter L1, and the value range of L1 is 15.2 to 16.9 mm; The emitting portion 3 has a diameter L2, and the value range of L2 is 34-36 mm.

[0036] Specifically, in the present embodiment, the value of D1 is 5.8 mm, the value of L1 is 15.2 mm, and the value of L2 is 35 mm. By adopting the above-mentioned value, the distance D1 between the light incident surface 11 and the first arc-shaped portion 21 is between 5.8 and 7.2 mm, the diameter L1 of the incident portion 2 is between 15.2 and 16.9 mm, and the diameter L2 of the exit portion 3 is between 34 and 36 mm. This can achieve the softening of the light spot while reducing the volume of the lens.

[0037] See also Figure 2 Furthermore, the incident portion 2 of the lens body 1 is provided with a target beam 4, the lens body 1 has a central axis, and the angle between the target beam 4 and the central axis is γ, and the value of γ is 15°*x.

[0038] Specifically, in this embodiment, the value range of x is 0.8 to 1.2, that is, 12° to 18°; in other embodiments, the value range of x can be 1.4 to 1.8; the value range of x can also be 2.2 to 2.6; the value range of x can also be 3.66 to 4.33. When the angle γ between the target light beam 4 and the central axis adopts the above-mentioned angles, the photoelectric utilization rate can reach 88%, and the total power collected by the light distribution can reach between 608 and 611 lm. The high-power light source can provide a higher brightness, which is suitable for scenes requiring high-brightness lighting. While ensuring the brightness, the high-power light distribution collection also shows that the energy efficiency of the light source is relatively high, which helps to reduce energy consumption and energy costs. It can also provide a wider lighting range, make the lighting effect more uniform, reduce dark areas, and improve lighting quality. It can also better adapt to various lighting needs and provide more professional lighting effects. It can also provide sufficient brightness, reduce glare, and improve visual comfort. It also helps to improve the stability and life of the light source and reduce maintenance costs. It can also provide sufficient brightness to ensure good lighting effects under all weather and environmental conditions.

[0039] pass Figures 7 to 9 It can be seen that Figure 7 The spectrum reflects that the light intensity of the target beam is concentrated in the visible band between 440 and 730 nm, without ultraviolet components, no stroboscopic effect, and no harm to human eyes; Figure 8 The light distribution curve of the lens in the present application scheme is reflected. It can be understood from the light distribution curve that after the target light beam is processed by the lens, the total collected power can reach 610lm, the efficiency can reach 0.89773, and the light intensity can reach 3749.8cd; Fig. 9 This reflects that after the target light beam is processed by the lens in the present application, the light spot transition is soft, achieving the effect of no bright circle and no stratification.

[0040] In a second aspect, this embodiment discloses a production process of a soft light lens, which is applied to the first aspect of this embodiment and includes the following steps: S1: According to the diameter L1 of the incident part 2, L1 is between 15.2 and 16.9 mm, and the diameter L2 of the exit part 3, L2 is between 34 and 36 mm, a cylindrical lens with a trapezoidal shape is prepared by close grinding, laser processing, or thermoforming, and the incident part 2 and the exit part 3 are provided; S2: opening a first arc-shaped portion 21, and forming the first arc-shaped portion 21 by means of close grinding or laser processing; S3: The side surface 13 of the lens body 1 is subjected to convex processing, and a plurality of first convex portions 130 are formed by close grinding or laser processing, and the surface areas of the plurality of first convex portions 130 gradually increase along the direction from the light incident surface 11 to the light exit surface 12; S4: The emission portion 3 is processed by close grinding or laser processing to form a second arc-shaped portion 31 and a third arc-shaped portion 32, and a convex processing is performed at the same time to form a second convex portion 33; S5: processing the third arc-shaped portion 32 by close grinding or laser processing to form a textured area 34; S6: Processing the surface of the lens body 1 by frosting to obtain a soft light lens.

[0041] Embodiment 2: In the first aspect, the present application embodiment discloses a soft light lens, see Figure 5 , including a lens body 1, the lens body 1 has a light incident surface 11 and a light emitting surface 12, and a side surface 13 connecting the light incident surface 11 and the light emitting surface 12; also including: a guide portion 5, the guide portion 5 is molded on the light incident surface 11 of the lens body 1, and the guide portion 5 is used to guide the light source to be uniformly divergent after reflection; the guide portion 5 has a plurality of input accommodating portions 51, and the input accommodating portions 51 are used to accommodate the light source; the lens body 1 has a fourth arc-shaped portion 6 and a fifth arc-shaped portion 7; the fourth arc-shaped portion 6 is close to the light incident surface 11, and the fifth arc-shaped portion 7 is close to the light emitting surface 12, and the fourth arc-shaped portion 6 and the fifth arc-shaped portion 7 are respectively used to uniformly diverge the light beam; the guide portion 5 has a reflection-enhancing portion 52, and the reflection-enhancing portion 52 is used to guide the light beam to be reflected back into the guide portion 5.

[0042] See also Figure 5 and 6 Further, the guiding portion 5 has an input end face, the light beam enters the guiding portion 5 from the input end face at an angle α, the light beam has a divergence angle, the divergence angle is 2α, and the divergence angle ranges from 60° to 80°; the refractive index of the guiding portion 5 is n, n is 1.49, and the angle between the upper surface and the lower surface of the guiding portion 5 is 2β, and the value range of 2β is 1° to 5°.

[0043] Specifically, the guiding portion 5 is a waveguide plate; the input accommodating portion 51 is an input accommodating cavity opened on the input end face side of the waveguide plate; the fourth arc-shaped portion 6 is a fourth curved surface, and the fifth arc-shaped portion 7 is a fourth curved surface; the reflection enhancing portion 52 is a reflection enhancing film, and the reflection enhancing film is used to reflect the illumination light beam back into the guiding portion 5, thereby avoiding excessive leakage of the light beam and improving the illumination efficiency.

[0044] In this embodiment, n is 1.49; the divergence angle 2α is 60°, and the divergence angle 2β is 4°; the waveguide plate can achieve better uniform soft light illumination, and the light beam enters the waveguide plate from the input end face, undergoes multiple total internal reflections, and finally destroys the lower surface of the total internal reflection guide part 5 to be emitted, thereby achieving uniform divergence of the illumination light, and the divergence angle of the light beam is within the above range, and the angle between the upper surface and the lower surface of the waveguide plate is within the above range, thereby achieving better uniform divergence of the illumination light and improving the illumination efficiency.

[0045] See also Figure 5 Further, the fourth arc-shaped portion 6 has a plurality of third protrusions 61, and the plurality of third protrusions 61 are evenly distributed on the surface of the fourth arc-shaped portion 6; the fifth arc-shaped portion 7 has a plurality of fourth protrusions, and the plurality of fourth protrusions are evenly distributed on the fourth arc-shaped portion 6; the surface areas of the plurality of third protrusions 61 and the plurality of fourth protrusions are respectively equal to m, and the value range of m is 0.15 to 0.2 mm 2 .

[0046] Specifically, the third raised portion 61 is a hemispherical body convexly arranged on the fourth curved surface; the fourth raised portion is a hemispherical body convexly arranged on the fifth curved surface. In this embodiment, the value of m is 0.15 mm^2. The light beam enters the light incident surface 11 of the transparent body from the lower surface of the guide portion 5, and the light beam is uniformly diverged through the multiple third raised portions 61 on the fourth arc-shaped portion 6 of the lens, and then the light beam is uniformly diverged through the multiple fourth raised portions on the fifth arc-shaped portion 7, producing a soft transition light spot, and the volume of the integrated lens is also reduced.

[0047] See also Figure 5 and 6 Furthermore, the lens body 1 has a diameter L3, and the value range of L3 is 60-120 mm; the guide portion 5 has a diameter L4, and L4=L3; the distance between the light incident surface 11 and the light exit surface 12 is D2, and the value range of D2 is 2-4 mm; the fourth arc-shaped portion 6 has a curvature radius, and the curvature radius ranges from 37 to 75 mm.

[0048] In this embodiment, L3 is 60mm, L4≈L3, D2 is 2mm, and the radius of curvature is in the range of 37mm; the light source is placed in the input accommodating portion 51, and the light source is evenly diverged to the light incident surface 11 of the lens body 1 after being guided and reflected by the guide portion 5. The evenly dispersed light beam falls on the light incident surface 11 of the transparent body, and the light beam is evenly diverged through the fourth arc-shaped portion 6 of the lens, and then further evenly diverged through the fifth arc-shaped portion 7, thereby realizing soft light illumination, which can achieve a uniform soft light illumination effect with small end face input and large end face output, and reduce the volume.

[0049] In a second aspect, this embodiment further discloses a production process of a soft light lens, which is applied to the first aspect of this embodiment and includes the following steps: S1: Prepare the guide portion 5 and the lens body 1. According to the diameter L3 of the lens body 1, a value is selected in the range of 60 to 120 mm. According to the diameter L3 of the guide portion 5, a value is selected in L4. According to the distance D2 between the light incident surface 11 and the light exit surface 12, a value is selected in the range of 2 to 4 mm. According to the curvature radius of the fourth arc-shaped portion 6, a value is selected in the range of 70 to 75 mm. The guide portion 5 and the lens body 1 are obtained by close grinding, laser processing, or thermoforming. S2: processing the guide part 5, according to the divergence angle of the light beam, taking a value in the divergence angle range of 60° to 80°, opening an input accommodating cavity, and then arranging the reflection enhancing part 52; S3: Processing the lens body 1 by grinding or laser processing the lens body 1 to obtain the fourth arc-shaped portion 6 and the fifth arc-shaped portion 7. S4: processing the fourth arc-shaped portion 6 and the fifth arc-shaped portion 7 respectively, and forming a plurality of third convex portions 61 and a plurality of fourth convex portions respectively by means of close grinding or laser processing; S5: molding the guide portion 5 onto the lens body 1 to obtain a soft light lens; S6: When in use, place the light source in a plurality of input receiving portions 51 to form a combined light beam.

[0050] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A soft light lens, comprising a lens body (1), wherein the lens body (1) has a light incident surface (11) and a light emitting surface (12), and a side surface (13) connecting the light incident surface (11) and the light emitting surface (12); characterized in that: Also includes: An incident portion (2), the incident portion (2) being arranged on the light incident surface (11), and the width of the incident portion (2) being gradually reduced in a direction from the light incident surface (11) to the light emitting surface (12); The incident portion (2) is provided with a first arc-shaped portion (21); An emission portion (3), the emission portion (3) being arranged relative to the incident portion (2), and the width of the emission portion (3) being gradually reduced in a direction from the light emitting surface (12) to the light incident surface (11); The side surface (13) is provided with a plurality of first protrusions (130), and the surface areas of the plurality of first protrusions (130) gradually increase along the direction from the light incident surface (11) to the light emitting surface (12); The emission portion (3) is provided with a second arc-shaped portion (31) and a third arc-shaped portion (32), and the third arc-shaped portion (32) is arranged to surround the second arc-shaped portion (31); A plurality of second protruding portions (33) are provided on the second arc-shaped portion (31), and the plurality of second protruding portions (33) extend toward the third arc-shaped portion (32) with the lens optical axis as the center point; The third arc-shaped portion (32) has a textured area (34).

2. The soft light lens according to claim 1, characterized in that: The incident portion (2) of the lens body (1) is provided with a target light beam (4), the lens body (1) has a central axis, and the angle between the target light beam (4) and the central axis is γ, and the value of γ is 15°*x; The value range of x is 0.8 to 1.2; and / or; The value of γ is 15°*x; The value range of x is 1.4 to 1.8; and / or; The value of γ is 15°*x; The value range of x is 2.2 to 2.6; and / or; The value of γ is 15°*x; The value of x is 3.66~4.

33.

3. The soft light lens according to claim 1, characterized in that: The surface of the lens body (1) is subjected to diffuse reflection treatment.

4. The soft light lens according to claim 1, characterized in that: The distance between the light incident surface (11) and the first arc-shaped portion (21) is D1, and the value range of D1 is 5.8 to 7.2 mm; The incident portion (2) has a diameter L1, and the value range of L1 is 15.2-16.9 mm; The emission portion (3) has a diameter L2, and the value range of L2 is 34-36 mm.

5. A production process for a soft light lens, applied to any one of claims 1 to 4, characterized in that: The following steps are involved: S1: According to the diameter L1 of the incident portion (2), L1 is between 15.2 and 16.9 mm, and the diameter L2 of the exit portion (3), L2 is between 34 and 36 mm, a cylindrical lens having a trapezoidal shape is prepared by close grinding, laser processing, or thermoforming, and the incident portion (2) and the exit portion (3) are provided; S2: opening a first arc-shaped portion (21), and forming the first arc-shaped portion (21) by means of close grinding or laser processing; S3: performing a convex processing on the side surface (13) of the lens body (1), such as by close grinding or laser processing, to form a plurality of first convex portions (130), wherein the surface areas of the plurality of first convex portions (130) gradually increase along the direction from the light incident surface (11) to the light exit surface (12); S4: processing the emission portion (3) by close grinding or laser processing to form a second arc-shaped portion (31) and a third arc-shaped portion (32), and simultaneously performing a convex processing to form a second convex portion (33); S5: processing the third arc-shaped portion (32) by close grinding or laser processing to form a textured area (34); S6: Processing the surface of the lens body (1) by frosting to obtain a soft light lens.

6. A soft light lens, comprising a lens body, wherein the lens body (1) has a light incident surface (11) and a light emitting surface (12), and a side surface (13) connecting the light incident surface (11) and the light emitting surface (12); characterized in that: Also includes: A guiding portion (5), the guiding portion (5) being molded on the light incident surface (11) of the lens body (1), and the guiding portion (5) being used to guide the light source to be evenly divergent after being reflected; The guide portion (5) has a plurality of input accommodating portions (51), and the input accommodating portions (51) are used to accommodate light sources; The lens body (1) has a fourth arc-shaped portion (6) and a fifth arc-shaped portion (7) The fourth arc-shaped portion (6) is close to the light incident surface (11), the fifth arc-shaped portion (7) is close to the light exiting surface (12), and the fourth arc-shaped portion (6) and the fifth arc-shaped portion (7) are respectively used to evenly diverge the light beam; The guiding portion (5) has a reflection enhancing portion (52), and the reflection enhancing portion (52) is used to guide the light beam to be reflected back into the guiding portion (5).

7. The soft light lens according to claim 6, characterized in that: The lens body (1) has a diameter L3, and the value range of L3 is 60 to 120 mm; The guide portion (5) has a diameter L4, L4=L3; The distance between the light incident surface (11) and the light emitting surface (12) is D2, and the value range of D2 is 2 to 4 mm; The fourth arc-shaped portion (6) has a curvature radius, and the curvature radius ranges from 37 to 75 mm.

8. The soft light lens according to claim 6, characterized in that: The guiding part (5) has an input end face, the light beam enters the guiding part (5) from the input end face at an angle α, the light beam has a divergence angle, the divergence angle is 2α, and the value range of the divergence angle is 60° to 80°; The refractive index of the guiding portion (5) is n, and the value of n is 1.49; the angle between the upper surface and the lower surface of the guiding portion (5) is 2β, and the value range of 2β is 1° to 5°.

9. The soft light lens according to claim 6, characterized in that: The fourth arc-shaped portion (6) has a plurality of third protrusions (61), and the plurality of third protrusions (61) are evenly distributed on the surface of the fourth arc-shaped portion (6); The fifth arc-shaped portion (7) has a plurality of fourth protrusions, and the plurality of fourth protrusions are evenly distributed on the fourth arc-shaped portion (6); The surface area of ​​each of the plurality of third protrusions (61) and the plurality of fourth protrusions is equal to m, and the value range of m is 0.15-0.2 mm. 2 .

10. A production process for a soft light lens, applied to any one of claims 6-9, characterized in that: The following steps are involved: S1: preparing a guide portion (5) and a lens body (1), taking a value of 60 to 120 mm in the value range of L3 according to the diameter L3 of the lens body (1), taking a value of L4 in the value range of L4 according to the diameter L3 of the guide portion (5), taking a value of D2 in the value range of 2 to 4 mm in the distance between the light incident surface (11) and the light exit surface (12), taking a value of 70 to 75 mm in the value range of the radius of curvature of the fourth arc-shaped portion (6), and obtaining the guide portion (5) and the lens body (1) by close grinding, laser processing, or thermoforming; S2: processing the guide part (5), selecting a value in the divergence angle range of 60° to 80° according to the divergence angle of the light beam, opening an input receiving cavity, and then arranging a reflection enhancing part (52); S3: processing the lens body (1), processing the lens body (1) by close grinding or laser processing, obtaining the fourth arc-shaped portion (6) and the fifth arc-shaped portion (7), S4: processing the fourth arc-shaped portion (6) and the fifth arc-shaped portion (7) respectively, and forming a plurality of third raised portions (61) and a plurality of fourth raised portions respectively by means of close grinding or laser processing; S5: molding the guide portion (5) onto the lens body (1) to obtain a soft light lens; S6: When in use, place the light source in a plurality of input receiving portions (51) to form a combined light beam.

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