Linear lens, optical system and lamp

Abstract

The utility model relates to the technical field of illumination, in particular to a linear lens, an optical system and a lamp. The linear lens comprises a light inlet groove, a light outlet surface and a reflecting surface arranged between the light inlet groove and the light outlet surface, and the light inlet groove comprises a groove bottom and two groove walls which are oppositely arranged; on the longitudinal section of the lens, the groove wall is a curve, and the middle of the groove wall protrudes towards the light incident groove relative to the two ends. According to the linear lens provided by the utility model, the groove wall is made into the curved surface of which the middle part protrudes towards the light incident groove, so that the light receiving area of the groove wall can be increased, and the groove bottom can be partially shielded by utilizing the protruding structure, so that more light rays are emitted to the groove wall and are emitted into the lens from the groove wall, and the convex curved surface has a light gathering effect; more light rays can be gathered and emitted to the reflecting surface, so that the proportion of long-optical-path light rays in all the light rays is increased, and the light emitting optical effect of the lens is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lighting, in particular to a linear lens, an optical system and a lamp. Background Art

[0002] In the field of lighting, linear lights can meet the specific usage needs of various scenarios due to their strip-shaped luminous area. In recent years, the demand for linear lights has been increasing, prompting the industry to pay more attention to linear lights. Many companies in the industry have increased their technical investment in linear lights to meet users' increasingly high lighting needs.

[0003] Common linear lights include a light entrance slot, a light exit surface, and a reflective surface. Part of the light entering from the light entrance slot is emitted directly from the light exit surface, while part is emitted from the light exit surface after being reflected by the reflective surface. During the test, technicians found that the light directly emitted from the light exit surface has a shorter optical path in the lens, and the lens has a poor light control effect on this part of the light, which restricts the improvement of the overall optical effect of the emitted light and makes it difficult to meet the increasingly high lighting needs. Utility Model Content

[0004] The purpose of the present utility model is to overcome the problem in the background art that the optical path of the light emitted directly from the light-emitting surface in the lens is short, the lens has poor light control effect on this part of the light, thereby restricting the improvement of the overall optical effect of the emitted light, and to provide a linear lens, an optical system and a lamp.

[0005] In a first aspect, the utility model provides a linear lens, comprising a light entrance groove and a light exit surface, and a reflective surface arranged between the light entrance groove and the light exit surface, wherein the light entrance groove comprises a groove bottom and two groove walls arranged opposite to each other;

[0006] In the longitudinal section of the lens, the groove wall is a curve, and the middle portion of the groove wall is convex toward the light incident groove at opposite ends.

[0007] When light passes through the lens, it has at least two paths. One is that it enters from the bottom of the groove and is directly emitted from the light-emitting surface. The optical path of this path is short, and the light-controlling ability of the lens is relatively weak; the other is that it enters from the groove wall, is reflected by the reflecting surface, and then is emitted from the light-emitting surface. The optical path of this path is long, and the light-controlling ability of the lens is relatively strong.

[0008] The utility model provides a linear lens. By making the groove wall into a curved surface with the middle portion convex toward the light entrance groove, the light collecting area of ​​the groove wall can be increased, and the convex structure can be used to partially block the groove bottom, so that more light is directed toward the groove wall and enters the lens from the groove wall. The convex curved surface has a focusing effect, which can concentrate more light toward the reflecting surface, thereby increasing the proportion of long-path light in the total light, which is beneficial to improving the optical effect of the lens light output.

[0009] Preferably, the lens is a strip-shaped component, and the light entrance groove and the light exit surface are arranged opposite to each other; the light entrance groove, the light exit surface and the reflective surface extend along the length direction of the lens.

[0010] Preferably, the two groove walls are distributed on both sides of the groove bottom, wherein: one groove wall is provided with a first incident surface, the other groove wall is provided with a second incident surface, and the groove bottom is provided with a third incident surface.

[0011] Preferably, the reflective surface includes a first reflective surface and a second reflective surface, wherein: the first reflective surface is located on one side of the light entrance groove and corresponds to the first incident surface; the second reflective surface is located on the other side of the light entrance groove and corresponds to the second incident surface.

[0012] Preferably, the first incident surface is a curved surface or a free-curved surface; the second incident surface is a curved surface or a free-curved surface.

[0013] Preferably, the lens is a flexible component; the lens is made of silicone.

[0014] The flexible lens not only allows for flexible bending to accommodate various installation and usage requirements, but also facilitates demolding of the raised slot wall facing the light entrance. Silicone, with its high-temperature resistance, strong plasticity, and softness, can meet the diverse needs of the linear lighting market.

[0015] Preferably, in the longitudinal section of the lens: the maximum depths of the two groove walls are different, and the groove bottom is inclined toward one side of the groove wall.

[0016] The linear lens of the utility model can polarize light incident from the groove bottom toward one side by changing the length of the groove walls on both sides so that the groove bottom is inclined toward one side of the groove wall, thereby meeting the polarization requirement. Since the refraction angles of light are different when passing through different positions of the groove bottom, the outgoing light can be distributed over a larger range, thereby reducing glare to the human eye.

[0017] Preferably, the light incident from the groove bottom is polarized to a first side of the lens, and the reflective surface is configured to be able to polarize the light incident from the groove wall to the first side.

[0018] By adjusting the shape of the reflecting surface, the light entering from the groove wall and the light entering from the groove bottom can be deflected to the same side, thereby forming overall single polarized light illumination, meeting the needs of single polarized use.

[0019] Preferably, the maximum depth of the first incident surface is greater than the maximum depth of the second incident surface, the first incident surface includes a first area and a second area arranged along the groove depth direction, and the first area is symmetrical to the second incident surface.

[0020] The first area and the second incident surface are symmetrical, so that the incident light distribution on both sides can be roughly the same, and the beam angle and polarization angle of the light on both sides can be made close by adjusting the surface shape of the reflecting surfaces on both sides, thereby obtaining the required beam angle and polarization angle of light.

[0021] Preferably, it further comprises a symmetry plane, wherein the first region and the second incident surface are symmetrical to the symmetry plane;

[0022] In the longitudinal section of the lens: the angle between the tangent line of the first reflecting surface at any depth and the symmetry plane is smaller than the angle between the tangent line of the second reflecting surface at the same depth and the symmetry plane.

[0023] The reflective surfaces on both sides can reflect light with similar polarization angles, thereby forming a more uniform overall polarized light.

[0024] Preferably, the third incident surface is a free-form surface.

[0025] By changing the shape of the third incident surface, the polarization angle and beam angle of the light incident from the third incident surface can be adjusted to obtain the desired illumination.

[0026] Preferably, in the longitudinal section of the lens: the maximum depths of the two groove walls are the same.

[0027] Preferably, the groove bottom is a curved surface convex toward the light incident groove; or: the groove bottom is a plane; or: the groove bottom is a concave surface.

[0028] By configuring the groove bottom as a convex surface, the convex surface's light-gathering effect can be utilized to achieve small-angle illumination; by configuring the groove bottom as a flat surface, medium-angle illumination can be achieved; and by configuring the groove bottom as a concave surface, the concave surface's light-scattering effect can be utilized to achieve large-angle illumination. The appropriate groove bottom shape can be selected based on different usage requirements to achieve illumination with different beam angles. Preferably, the first reflective surface includes at least two light-gathering surfaces distributed along the groove depth, each of which is a concave surface facing the interior of the lens.

[0029] A specific concave focusing structure can be formed while reducing the space occupied, thereby forming an outgoing light at a required angle.

[0030] Preferably, the groove bottom is a concave structure, and the groove bottom includes a first bottom surface and a second bottom surface forming an angle.

[0031] By providing the first bottom surface and the second bottom surface, light incident from the groove bottom can be deflected to both sides of the lens, thereby forming bidirectional polarized light.

[0032] Preferably, the first bottom surface and the second bottom surface are curved surfaces convex toward the light incident groove.

[0033] The focusing effect of the convex surface can be used to concentrate light on a certain area, thereby increasing the brightness of the area and meeting lighting needs.

[0034] Preferably, the first incident surface and the second incident surface are symmetrical, and / or the first reflecting surface and the second reflecting surface are symmetrical, and / or the first bottom surface and the second bottom surface are symmetrical.

[0035] In a second aspect, the utility model provides a single polarized optical system, comprising a light source and the linear lens as described above, wherein at least a portion of the light emitted by the light source enters from the groove wall and is totally reflected by the reflective surface to the light-emitting surface; the emitted light is biased toward one side of the lens.

[0036] The utility model provides a single polarized optical system, which, by using the linear lens as described above, can increase the proportion of long-path light in the total light, thereby more fully utilizing the light-controlling effect of the lens and improving the optical effect of the outgoing light. By changing the length of the groove walls on both sides, the light entering from the groove bottom can be polarized to one side, meeting the polarization requirements. Since the refraction angles of light are different when passing through different positions of the groove bottom, the outgoing light can be distributed over a larger range, reducing glare to the human eye.

[0037] In a third aspect, the present invention provides a non-polarized optical system, comprising a light source and the linear lens as described above, wherein at least a portion of the light emitted by the light source enters from the groove wall and is totally reflected by the reflective surface to the light-emitting surface.

[0038] The utility model provides a non-polarizing optical system that can form non-polarized light. By using the linear lens as described above, the proportion of long-path light in the total light can be increased, thereby more fully utilizing the light control effect of the lens and improving the optical effect of the output light.

[0039] In a fourth aspect, the utility model provides a dual-polarization optical system, comprising a light source and the linear lens as described above, wherein at least a portion of the light emitted by the light source is incident from the groove wall and is totally reflected by the reflective surface to the light-emitting surface; the emitted light is biased toward both sides of the lens.

[0040] The utility model provides a dual-polarization optical system that can form bidirectional polarized light. By using the linear lens as described above, the proportion of long-path light in the total light can be increased, thereby more fully utilizing the light control effect of the lens and improving the optical effect of the output light.

[0041] In a fifth aspect, the utility model provides a lamp, comprising a housing, a PCB board, and also comprising the single polarization optical system as described above; or the non-polarization optical system as described above; or the dual polarization optical system as described above.

[0042] The utility model provides a lamp that, by using the single-polarized optical system, non-polarized optical system or double-polarized optical system as described above, can respectively form unidirectional polarized light, unpolarized light or bidirectional polarized light to meet the needs of use in different scenarios; and: can increase the proportion of long-path light in the total light, more fully utilize the light control effect of the lens, and improve the optical effect of the output light.

[0043] Preferably, the lens is made of silicone, the housing is a flexible housing, the PCB board is a flexible PCB board, and the light transmittance of the housing is lower than the light transmittance of the lens.

[0044] It can be formed into flexible lamps to meet various installation and usage needs.

[0045] Preferably, the housing is provided with a groove, the lens and the PCB board are located in the groove, the light emitting surface and the opening of the groove are on the same side; and: the lens and the housing are integrally formed; or: the lens and the housing are separated.

[0046] Compared with the prior art, the present invention has the following beneficial effects:

[0047] 1. The utility model provides a linear lens. By forming the groove wall into a curved surface with the middle portion convex toward the light entrance groove, the light-collecting area of ​​the groove wall can be increased. The convex structure can also be used to partially block the groove bottom, allowing more light to be directed toward the groove wall and enter the lens from the groove wall. The convex curved surface has a focusing effect, which can concentrate more light toward the reflective surface, thereby increasing the proportion of long-path light in the total light, which is beneficial to improving the optical effect of the lens light output.

[0048] 2. The present invention provides a single polarizing optical system that, by using the linear lens described above, can increase the proportion of long-path light in the total light, thereby more fully utilizing the light-controlling effect of the lens and improving the optical effect of the outgoing light. By varying the length of the groove walls on both sides, light entering from the groove bottom can be polarized to one side, meeting polarization requirements. Since the refraction angles of light differ when passing through different positions of the groove bottom, the outgoing light can be distributed over a wider range, reducing glare to the human eye.

[0049] 3. The non-polarizing optical system provided by the present invention can form non-polarized light. By using the linear lens as described above, the proportion of long-path light in the total light can be increased, thereby more fully utilizing the light control effect of the lens and improving the optical effect of the output light.

[0050] 4. The utility model provides a dual-polarization optical system that can form bidirectional polarized light. By using the linear lens as described above, the proportion of long-path light in the total light can be increased, thereby more fully utilizing the light control effect of the lens and improving the optical effect of the outgoing light.

[0051] 5. The utility model provides a lamp that, by using the single-polarization optical system, non-polarization optical system or double-polarization optical system as described above, can respectively form unidirectional polarized light, unpolarized light or bidirectional polarized light to meet the needs of use in different scenarios; and: can increase the proportion of long-path light in the total light, more fully utilize the light control effect of the lens, and improve the optical effect of the output light. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 A schematic longitudinal section of the single polarized lens described in Example 3 Figure 1 ;

[0053] Figure 2 A schematic longitudinal section of the single polarized lens described in Example 3 Figure 2 ;

[0054] Figure 3 A schematic longitudinal section of the single polarized lens described in Example 3 Figure 3 ;

[0055] Figure 4 Schematic diagram of a longitudinal section of the small-angle non-polarized lens described in Example 4;

[0056] Figure 5 Schematic diagram of the longitudinal section of the medium-angle non-polarized lens described in Example 4;

[0057] Figure 6 Schematic diagram of the longitudinal section of the wide-angle non-polarized lens described in Example 4;

[0058] Figure 7 Schematic diagram of the longitudinal section of the double polarized lens described in Example 5;

[0059] Figure 8 Schematic diagram of light output from the single polarization optical system described in Example 6;

[0060] Figure 9 This is a light distribution curve diagram of the single polarization optical system described in Example 6;

[0061] Figure 10 Schematic diagram of light output from the single polarized optical system described in Example 6 (light output from the bottom of the groove is omitted);

[0062] Figure 11 Schematic diagram of light output from the single polarized optical system described in Example 6 (light output from the slot wall is omitted);

[0063] Figure 12 Schematic diagram of light output from the small-angle non-polarized optical system described in Example 7;

[0064] Figure 13 This is a light distribution curve diagram of the small-angle non-polarized optical system described in Example 7;

[0065] Figure 14 Schematic diagram of light output from the medium-angle non-polarized optical system described in Example 7;

[0066] Figure 15 This is a light distribution curve diagram of the medium-angle non-polarized optical system described in Example 7;

[0067] Figure 16 Schematic diagram of light output from the large-angle non-polarized optical system described in Example 7;

[0068] Figure 17 This is a light distribution curve diagram of the large-angle non-polarized optical system described in Example 7;

[0069] Figure 18 Schematic diagram of light output from the dual-polarization optical system described in Example 8;

[0070] Figure 19 This is a light distribution curve diagram of the dual-polarization optical system described in Example 8;

[0071] Figure 20 Schematic diagram of a longitudinal section of the single polarized light fixture described in Example 10;

[0072] Figure 21 This is a schematic structural diagram of the single polarized light fixture described in Example 10;

[0073] Figure 22 Schematic diagram of a longitudinal section of the single polarized light fixture described in Example 11;

[0074] Figure 23 This is a schematic structural diagram of the single polarized light fixture described in Example 11;

[0075] Figure 24 Schematic diagram of a longitudinal section of the dual-polarized lamp described in Example 10;

[0076] Figure 25 Schematic diagram of the longitudinal section of the dual-polarized lamp described in Example 11.

[0077] Markings in the figure:

[0078] 1- Lens;

[0079] 11-light entrance slot;

[0080] 111 - groove bottom; 112 - groove wall; 113 - first incident surface; 114 - second incident surface; 115 - third incident surface; 116 - first area; 117 - second area; 118 - first bottom surface; 119 - second bottom surface;

[0081] 12-light-emitting surface;

[0082] 13-reflecting surface;

[0083] 131 - first reflecting surface; 132 - second reflecting surface; 133 - light-collecting surface;

[0084] 14- symmetry plane;

[0085] 2- Light source;

[0086] 3- housing;

[0087] 4-PCB board. DETAILED DESCRIPTION

[0088] The present invention will be further described in detail below with reference to specific embodiments. However, this should not be construed as limiting the scope of the present invention to the following embodiments. All technologies implemented based on the present invention fall within the scope of the present invention.

[0089] Unless otherwise specified, in the description of the specific embodiments of the present invention, the terms indicating orientation or positional relationships, such as "upper," "lower," "left," "right," "center," "inside," and "outside," are based on the orientation or positional relationships shown in the accompanying drawings, or are the orientation or positional relationships in which the product / device / apparatus of the present invention is typically placed when in use. These terms indicating orientation or positional relationships are merely for the purpose of facilitating the description of the present invention or simplifying the description of the specific embodiments to facilitate a quick understanding of the solutions by technicians. They do not indicate or imply that a particular device / component / element must have a specific orientation or be constructed and operated in a specific positional relationship, and therefore should not be construed as limiting the present invention.

[0090] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simply understood that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", and "parallel", and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the solution of the present utility model.

[0091] In addition, the expressions "first", "second", "third", etc. that appear in the terms are merely descriptions used to distinguish the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0092] In addition, in the description of the embodiments of the present invention, "several", "a plurality", and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.

[0093] Furthermore, in the description of the technical solutions of this utility model, unless otherwise expressly specified / defined / restricted, the terms "disposed," "installed," "connected," "connected," "provided with," "laid," and "arranged" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections. They may be welding, riveting, bolting, threading, or other commonly used connection methods in the art. Such connections may be mechanical, electrical, or communication connections; they may be direct connections, indirect connections through an intermediate medium, or internal connections between two components.

[0094] Example 1

[0095] See also Figure 1-7 A linear lens provided in this embodiment includes a light entrance groove 11 and a light exit surface 12, and a reflective surface 13 arranged between the light entrance groove 11 and the light exit surface 12. The light entrance groove 11 includes a groove bottom 111 and two groove walls 112 arranged opposite to each other; in the longitudinal section of the lens 1: the groove wall 112 is a curve, and: the middle part of the groove wall 112 is convex toward the light entrance groove 11 at both ends.

[0096] The lens 1 can be a strip-shaped component, the light entrance groove 11 can be located on one side of the length direction of the lens 1, and the light exit surface 12 can be located on the other side of the length direction of the lens 1. The light entrance groove 11 and the light exit surface 12 are arranged opposite to each other, and the reflecting surface 13 is located between the light entrance groove 11 and the light exit surface 12, which is used to reflect part of the light incident from the light entrance groove 11 to the light exit surface 12, thereby improving the light utilization rate of the lens 1.

[0097] The light entrance groove 11 includes a groove bottom 111 and groove walls 112. The groove bottom 111 is opposite to the opening of the light entrance groove 11. The groove walls 112 are located on both sides of the groove bottom 111, and the groove walls 112 on both sides are arranged opposite each other. The groove bottom 111 and the groove walls 112 are both extended along the length of the lens 1. When in use, the light source 2 can be placed inside the light entrance groove 11 or near the opening, so that most of the light emitted by the light source 2 is directed into the light entrance groove 11 and enters the lens 1 from the groove bottom 111 or the groove walls 112. Figure 8 Since the groove bottom 111 and the light emitting surface 12 are opposite to each other, most of the light entering the lens 1 from the groove bottom 111 can be directly refracted out from the light emitting surface 12. The optical path of this part of the light in the lens 1 is short, and the optical effect of its outgoing light is relatively poor; while most of the light entering the lens 1 from the groove wall 112 is first reflected by the reflecting surface 13 and then refracted out from the light emitting surface 12. The optical path of this part of the light in the lens 1 is long, and the optical effect of its outgoing light is relatively good.

[0098] In order to improve the overall optical effect of the light emitted by the lens 1, it is possible to consider increasing the proportion of long-path light in the total light and reducing the proportion of short-path light, so that more light is first reflected by the reflective surface 13 and then refracted out from the light-emitting surface 12. To this end, the groove wall 112 can be designed as a curved surface with a central portion convex toward the light-entering groove 11, such as Figure 1-2 As shown; by raising the middle part of the groove wall 112 toward the light entrance groove 11, the light collecting area of ​​the groove wall 112 can be increased, and the groove bottom 111 can be partially blocked by the protruding part, so that more light can be directed toward the groove wall 112 and enter the lens 1 from the groove wall; and the outwardly convex curved surface has a focusing effect, which can make more light entering the lens 1 from the groove wall 112 be concentrated on the reflecting surface 13, and then reflected to the light emitting surface 12 through the reflecting surface 13. By increasing the amount of light entering from the light entrance groove 11 and increasing the amount of light reflected by the reflecting surface 13, the proportion of long optical path light in the total output light can be increased, thereby improving the overall light output effect.

[0099] The lens 1 of this embodiment can be transparent, or its haze can be increased in different areas through sandblasting, graining, or the addition of a diffusing agent to achieve different optical effects. The lens 1 can be manufactured through extrusion or injection molding. The longitudinal direction of the lens 1 refers to its length, and a longitudinal cross-section is a cross-section perpendicular to the length.

[0100] like Figure 2 、 4As shown in FIG. 7 , the middle portion of the groove wall 112 protrudes toward the light entrance groove 11 relative to both ends. This means that the middle portion of the groove wall 112 is located on the side of the line connecting the two ends of the groove wall 112 close to the light entrance groove 11. Figure 2 The midpoint line segment is a line connecting the two ends of the groove wall 112 .

[0101] The linear lens provided in this embodiment increases the light-collecting area of ​​the groove wall 112 by forming the groove wall 112 into a curved surface with a central portion convex toward the light-entering groove 11. The convex structure can also be used to partially block the groove bottom 111, allowing more light to be directed toward the groove wall 112 and then into the lens 1 from the groove wall 112. The convex curved surface has a focusing effect, which can focus more light toward the reflecting surface 13, thereby increasing the proportion of long-path light in the total light, which is beneficial to improving the optical effect of the light output of the lens 1.

[0102] Example 2

[0103] This embodiment provides a linear lens. Based on the embodiment 1, the lens 1 is a strip-shaped component, and the light entrance groove 11 and the light exit surface 12 are arranged opposite to each other; the light entrance groove 11, the light exit surface 12 and the reflective surface 13 extend along the lens.

[0104] In some embodiments, two groove walls 112 are distributed on both sides of the groove bottom 111, wherein: one groove wall 112 is provided with a first incident surface 113, the other groove wall 112 is provided with a second incident surface 114, and the groove bottom 111 is provided with a third incident surface 115; the first incident surface 113, the second incident surface 114 and the third incident surface 115 can all allow light to enter, and the first incident surface 113 and the second incident surface 114 are curved surfaces convex toward the middle of the light entrance groove 11.

[0105] In some embodiments, the reflecting surface 13 includes a first reflecting surface 131 corresponding to the first incident surface 113, and a second reflecting surface 132 corresponding to the second incident surface 114. The first reflecting surface 131 and the second reflecting surface 132 are respectively located on both sides of the light entrance groove 11. The first reflecting surface 131 is used to reflect the light incident from the first incident surface 113, and the second reflecting surface 132 is used to reflect the light incident from the second incident surface 114.

[0106] Observing from the inside of the lens 1, the first reflecting surface 131 and the second reflecting surface 132 can be concave surfaces. The focusing effect of the concave surfaces can make the reflected light converge on a certain local area, reducing the beam angle of the outgoing light, thereby increasing the brightness in the area and meeting the lighting needs.

[0107] In some embodiments, the first incident surface 113 is a curved surface or a free-form surface.

[0108] In some embodiments, the second incident surface 114 is a curved surface or a free-form surface.

[0109] The desired optical effect of illumination can be obtained by adjusting and changing the surface shape of the first incident surface 113 or the second incident surface 114 .

[0110] In some embodiments, the lens 1 is a flexible member; the lens 1 is made of silicone.

[0111] The flexible lens 1 not only allows for flexible bending to accommodate various installation and usage requirements, but also facilitates demolding of the protruding groove wall 112 facing the light entrance groove 11. Silicone is heat-resistant, highly malleable, and flexible, meeting the diverse needs of the linear light market.

[0112] In some embodiments, the light emitting surface 12 is a plane, a threaded surface, or a serrated surface.

[0113] Example 3

[0114] See also Figure 1-3 This embodiment provides a linear lens, based on embodiment 1 or 2, in which, in the longitudinal section of the lens 1: the maximum depths of the two groove walls 112 are different, and the groove bottom 111 is inclined toward one side of the groove wall 112.

[0115] The depth of the groove wall 112 refers to the dimension of the groove depth direction of the light entrance groove 11. The groove depth direction can be a direction perpendicular to the opening plane of the light entrance groove 11, or the direction of the symmetry axis of the first incident surface 113 and the second incident surface 114, or the direction of the light source 2 in use. Figure 1 For example, the maximum depth of the left groove wall 112 is d, and the maximum depth of the right groove wall 112 is e, where d>e.

[0116] The maximum depths of the two groove walls 112 are different, which means that the inner ends of the two groove walls 112 close to the groove bottom 111 are at different depths, and the groove bottom 111 connecting the inner ends of the two groove walls 112 is inclined to one side, such as Figure 1-2 By tilting the groove bottom 111, light entering from the groove bottom 111 can be polarized to one side, thereby forming polarized illumination. Since the refraction angles of light are different when passing through different positions of the groove bottom 111, the outgoing light can be distributed over a larger range, reducing glare to the human eye.

[0117] In some embodiments, the light incident from the groove bottom 111 is polarized to the first side of the lens 1 , and the reflective surface 13 is configured to polarize the light incident from the groove wall 112 to the first side.

[0118] By adjusting the shape of the reflective surface 13 , the light entering from the groove wall 112 and the light entering from the groove bottom 111 can be deflected to the same side, thereby forming overall single polarized light illumination, meeting the use requirements of single polarization.

[0119] In some embodiments, the maximum depth of the first incident surface 113 is greater than the maximum depth of the second incident surface 114 . The first incident surface 113 includes a first area 116 and a second area 117 arranged along the groove depth direction. The first area 116 and the second incident surface 114 are symmetrical.

[0120] The first area 116 is the area of ​​the first incident surface 113 close to the opening of the light entrance groove 11. The first area 116 and the second incident surface 114 are symmetrical, so that the light entering from the first area 116 and the second incident surface 114 can be roughly symmetrical. By adjusting the surface shapes of the first reflecting surface 131 and the second reflecting surface 132, the beam angle and polarization angle of the light on both sides can be close to each other, thereby obtaining the required beam angle and polarization angle of light.

[0121] The first region 116 and the second incident surface 114 are in a plane-symmetrical structure based on the symmetry plane 14 .

[0122] In some embodiments, in the longitudinal section of the lens 1 , the angle between the tangent line of the first reflective surface 131 and the symmetry plane 14 at any depth is smaller than the angle between the tangent line of the second reflective surface 132 and the symmetry plane 14 at the same depth.

[0123] See also Figure 3 The tangent line of the first reflecting surface 131 at any depth refers to the tangent line made at a point on the longitudinal section of the lens 1 at the depth of any groove of the first reflecting surface 131; similarly, the tangent line of the second reflecting surface 132 at this depth refers to the tangent line made at a point on the longitudinal section of the lens 1 at the depth of the second reflecting surface 132.

[0124] by Figure 3 For example, if tangent lines are drawn at points a and b at the same depth, the angle between the tangent line at point a and the symmetry plane 14 is smaller than the angle between the tangent line at point b and the symmetry plane 14. This allows the reflective surfaces 13 on both sides to reflect light with similar polarization angles, resulting in more uniform overall polarized light.

[0125] In some embodiments, the third incident surface 115 is an inclined free-form surface; by changing the surface shape of the third incident surface 115 , the polarization angle and beam angle of the light incident from the third incident surface 115 can be adjusted to obtain desired illumination.

[0126] Example 4

[0127] This embodiment provides a linear lens, based on embodiment 1 or 2, in which, in the longitudinal section of the lens 1 , the maximum depths of the two groove walls 112 are the same.

[0128] See also Figure 4 In some embodiments, the groove bottom 111 is a curved surface convex toward the light incident groove 11 .

[0129] By setting the groove bottom 111 as a convex surface, the light directly emitted from the groove bottom 111 to the light-emitting surface 12 can be focused inward by utilizing the focusing effect of the convex surface, thereby obtaining small-angle lighting.

[0130] See also Figure 6 In some embodiments, the groove bottom 111 is concave.

[0131] By setting the groove bottom 111 as a concave surface, the light directly emitted from the groove bottom 111 to the light-emitting surface 12 can be dispersed to both sides by utilizing the light diffusion effect of the concave surface, thereby obtaining wide-angle lighting.

[0132] See also Figure 5 In some embodiments, the groove bottom 111 is a plane.

[0133] By setting the groove bottom 111 as a plane, a medium angle illumination between a small angle and a large angle can be obtained. The appropriate shape of the groove bottom 111 can be selected according to different usage needs to obtain illumination with different beam angles.

[0134] In some embodiments, the first reflective surface 131 includes at least two light-collecting surfaces 133 distributed along the groove depth direction, and the second reflective surface 132 includes at least two light-collecting surfaces 133 distributed along the groove depth direction. The light-collecting surfaces 133 are concave surfaces facing the interior of the lens 1 .

[0135] See also Figure 6 The focusing surface 133 refers to a plurality of discontinuous curved surface areas provided on the reflecting surface 13. At least two focusing surfaces 133 are sequentially distributed along the groove depth direction, and can respectively play an independent focusing and reflecting role on the light incident on different areas of the reflecting surface 13. Due to the discontinuous characteristics between different focusing surfaces 133, the focusing surface 133 can set a corresponding curved surface shape according to the corresponding light, thereby reflecting and forming the required output light. Compared with the overall continuous reflecting surface 13, the use of the focusing surface 133 can reduce the distance between the reflecting surface 13 and the incident surface, thereby reducing the space occupied.

[0136] In some embodiments, the first incident surface 113 and the second incident surface 114 are symmetrical, and the first reflective surface 131 and the second reflective surface 132 are symmetrical.

[0137] See also Figure 4 When the groove bottom 111 is set to a convex surface, the first reflective surface 131 and the second reflective surface 132 can be a plane or a slightly concave surface to form an overall small-angle outgoing light.

[0138] See also Figure 5 When the groove bottom 111 is set to a plane, the first reflective surface 131 and the second reflective surface 132 can be provided with a plurality of light-collecting surfaces 133 with a smaller degree of curvature to form an overall medium-angle outgoing light.

[0139] See also Figure 6 When the groove bottom 111 is set as a concave surface, the first reflecting surface 131 and the second reflecting surface 132 can be provided with a plurality of light-collecting surfaces 133 with a large degree of curvature to form an overall large-angle outgoing light.

[0140] Example 5

[0141] See also Figure 7 This embodiment provides a linear lens, based on embodiment 1 or 2, in which, in the longitudinal section of the lens 1: the maximum depths of the two groove walls 112 are the same, and: the groove bottom 111 is a concave structure, and the groove bottom 111 includes a first bottom surface 118 and a second bottom surface 119 that form an angle.

[0142] The first bottom surface 118 and the second bottom surface 119 respectively refer to different areas of the third incident surface 115. The first bottom surface 118 is arranged close to the first incident surface 113, and the second bottom surface 119 is arranged close to the second incident surface 114. Through the first bottom surface 118 and the second bottom surface 119, the light entering from the groove bottom 111 can be deflected to the two sides of the lens 1 through the first bottom surface 118 and the second bottom surface 119, thereby forming bidirectional polarized light.

[0143] Correspondingly, the first reflecting surface 131 is configured such that the light incident from the first incident surface 113 is polarized to the same side as the light incident from the first bottom surface 118 after being reflected by the first reflecting surface 131; the second reflecting surface 132 is configured such that the light incident from the second incident surface 114 is polarized to the same side as the light incident from the second bottom surface 119 after being reflected by the second reflecting surface 132, so as to form overall bidirectional polarized light.

[0144] In some embodiments, the first bottom surface 118 and the second bottom surface 119 are convex toward the light incident groove 11 , and the first bottom surface 118 and the second bottom surface 119 may be folded line surfaces.

[0145] In some embodiments, the first bottom surface 118 and the second bottom surface 119 are curved surfaces convex toward the light incident groove 11 .

[0146] The focusing effect of the convex surface can be used to concentrate light on a certain area, thereby increasing the brightness of the area and meeting lighting needs.

[0147] In some embodiments, the first incident surface 113 and the second incident surface 114 are symmetrical, the first reflective surface 131 and the second reflective surface 132 are symmetrical; the first bottom surface 118 and the second bottom surface 119 are symmetrical; and output light with uniform polarization to both sides can be formed to meet the needs of specific scenarios.

[0148] Example 6

[0149] See also Figure 8-11This embodiment provides a single polarized optical system, including a light source 2 and a linear lens as described in Example 3. At least part of the light emitted by the light source 2 enters from the groove wall 112 and is totally reflected by the reflection surface 13 to the light output surface 12; the output light is biased toward one side of the lens 1.

[0150] The light source 2 is preferably an LED light source, and several light sources 2 can be arranged at intervals along the extension direction of the light entrance groove 11 ; part of the light emitted by the light source 2 enters the lens 1 from the groove bottom 111 and is directly refracted and emitted from the light exit surface 12 .

[0151] The present embodiment provides a single polarized optical system that, by using the above-described linear lens, can increase the proportion of long-path light in the total light, thereby more fully utilizing the light-controlling effect of the lens 1 and improving the optical effect of the outgoing light. By varying the length of the groove walls 112 on both sides, the light entering from the groove bottom 111 can be polarized to one side, thereby meeting the polarization requirement. Since the refraction angles of light are different when passing through different positions of the groove bottom 111, the outgoing light can be distributed over a larger range, thereby reducing glare to the human eye.

[0152] See also Figure 9 The light distribution curve diagram of the single polarized optical system is shown, where the blue curve represents the single polarized light emitted from the light emitting surface 12; the green curve represents the light emitted from both ends of the optical system. Different optical effects can be obtained by adjusting the surface shapes of the incident surface, the reflecting surface 13 and the light emitting surface 12.

[0153] Example 7

[0154] See also Figure 12-17 This embodiment provides a non-polarized optical system, including a light source 2 and a linear lens as described in Example 4. At least part of the light emitted by the light source 2 enters from the groove wall 112 and is totally reflected by the reflection surface 13 to the light output surface 12.

[0155] The light source 2 is preferably an LED light source, and several light sources 2 can be arranged at intervals along the extension direction of the light entrance groove 11 ; part of the light emitted by the light source 2 enters the lens 1 from the groove bottom 111 and is directly refracted and emitted from the light exit surface 12 .

[0156] The non-polarizing optical system provided in this embodiment can form non-polarized light. By using the above linear lens, the proportion of long-path light in the total light can be increased, thereby more fully utilizing the light control effect of lens 1 and improving the optical effect of the output light.

[0157] Figure 13 This is the light distribution curve of the small-angle non-polarized optical system. Figure 15 This is the light distribution curve of the medium-angle non-polarized optical system. Figure 17This is a light distribution curve diagram for a large-angle non-polarized optical system; the blue curve in the figure represents the single polarized light emitted from the light-emitting surface 12; the green curve represents the light emitted from both ends of the optical system. Different optical effects can be obtained by adjusting the surface shapes of the incident surface, the reflecting surface 13, and the light-emitting surface 12.

[0158] Example 8

[0159] See also Figure 18-19 This embodiment provides a dual-polarization optical system, including a light source 2 and a linear lens as described in Example 5. At least part of the light emitted by the light source 2 enters from the groove wall 112 and is totally reflected by the reflection surface 13 to the light-emitting surface 12; the emitted light is deflected to both sides of the lens 1.

[0160] The light source 2 is preferably an LED light source, and several light sources 2 can be arranged at intervals along the extension direction of the light entrance groove 11 ; part of the light emitted by the light source 2 enters the lens 1 from the groove bottom 111 and is directly refracted and emitted from the light exit surface 12 .

[0161] The present embodiment provides a dual-polarization optical system that can form bidirectionally polarized light. By using the above linear lens, the proportion of long-path light in the total light can be increased, thereby more fully utilizing the light control effect of lens 1 and improving the optical effect of the outgoing light.

[0162] See also Figure 19 The light distribution curve diagram of the dual-polarized optical system is shown, where the blue curve represents the single polarized light emitted from the light-emitting surface 12; the green curve represents the light emitted from both ends of the optical system. Different optical effects can be obtained by adjusting the surface shapes of the incident surface, the reflecting surface 13 and the light-emitting surface 12.

[0163] Example 9

[0164] This embodiment provides a lamp, which includes the single polarization optical system described in Example 6, or the non-polarization optical system described in Example 7, or the dual polarization optical system described in Example 8.

[0165] The lamp provided in this embodiment can form unidirectional polarized light, unpolarized light or bidirectional polarized light respectively by using the above-mentioned single polarized optical system, non-polarized optical system or double polarized optical system to meet the needs of use in different scenarios; and: it can increase the proportion of long-path light in the total light, more fully utilize the light control effect of lens 1, and improve the optical effect of the output light.

[0166] In some embodiments, the lamp further includes a housing 3 and a PCB board 4 .

[0167] The housing 3 protects the lens 1 and the light source 2. The outer wall of the housing 3 can be provided with a strip groove structure for assembly and connection with other bases; the PCB board 4 can be used to install and fix the light source 2 and provide power to the light source 2. At least two light sources 2 can be set on the PCB board 4.

[0168] Example 10

[0169] See also Figure 22 、 23 25. This embodiment provides a lamp. Based on the embodiment 9, the lens 1 is made of silicone, the housing 3 is a flexible housing, the PCB board 4 is a flexible PCB board, and the transmittance of the housing 3 is less than the transmittance of the lens 1.

[0170] The assembly structure of the flexible housing, the flexible PCB board and the lens 1 can be bent to adapt to different installation and use requirements.

[0171] The lens 1 can be transparent or hazy; the flexible housing 3 can be a milky white light-proof structure.

[0172] In some embodiments, the housing 3 is provided with a groove, the lens 1 and the PCB board 4 are located in the groove, the light emitting surface 12 and the opening of the groove are on the same side; and the lens 1 and the housing 3 are integrally formed.

[0173] PCB board 4 is located within the cavity of the lens 1 and housing 3. The lens 1 and flexible housing 3 together form a cavity for mounting the light source. This cavity can be provided with a snap-in slot. In a longitudinal cross-section of the lens 1, both ends of the flexible PCB board 4 can be inserted into the snap-in slots for securement.

[0174] Example 11

[0175] See also Figure 20 、 21 24. This embodiment provides a lamp, which is based on the embodiment 10 and differs from the embodiment 10 in that the lens 1 and the housing 3 are separated.

[0176] The lens 1, PCB board 4 and shell 3 can be manufactured separately and assembled together; in the longitudinal section of the lens 1: the two ends of the flexible PCB board 4 can be provided with relatively protruding snap-in edges, which are fixed with the snap-in grooves in the groove of the flexible shell 3.

[0177] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A linear lens, characterized in that: The light-entering groove (11) comprises a light-entering groove (11) and a light-emitting surface (12), and a reflecting surface (13) arranged between the light-entering groove (11) and the light-emitting surface (12); the light-entering groove (11) comprises a groove bottom (111) and two groove walls (112) arranged opposite to each other; On the longitudinal section of the lens (1), the groove wall (112) is a curve, and the middle portion of the groove wall (112) is convex toward the light entrance groove (11) at opposite ends.

2. The linear lens according to claim 1, wherein The lens (1) is a strip-shaped component, and the light entrance groove (11) and the light exit surface (12) are arranged opposite to each other; the light entrance groove (11), the light exit surface (12) and the reflection surface (13) extend along the length direction of the lens.

3. The linear lens according to claim 1, wherein: The lens (1) is a flexible component.

4. The linear lens according to any one of claims 1 to 3, characterized in that: The two groove walls (112) are distributed on both sides of the groove bottom (111), wherein: one groove wall (112) is provided with a first incident surface (113), the other groove wall (112) is provided with a second incident surface (114), and the groove bottom (111) is provided with a third incident surface (115); The reflecting surface (13) includes a first reflecting surface (131) and a second reflecting surface (132), wherein: the first reflecting surface (131) is located on one side of the light entrance groove (11) and corresponds to the first incident surface (113); the second reflecting surface (132) is located on the other side of the light entrance groove (11) and corresponds to the second incident surface (114).

5. The linear lens according to claim 4, wherein: The first incident surface (113) is a curved surface or a free-curved surface; the second incident surface (114) is a curved surface or a free-curved surface.

6. The linear lens according to claim 4, wherein: In the longitudinal section of the lens (1), the maximum depths of the two groove walls (112) are different, and the groove bottom (111) is inclined toward one side of the groove wall (112).

7. The linear lens according to claim 6, wherein: The light incident from the groove bottom (111) is polarized to the first side of the lens (1), and the reflecting surface (13) is configured to be able to polarize the light incident from the groove wall (112) to the first side.

8. The linear lens according to claim 6, wherein: The maximum depth of the first incident surface (113) is greater than the maximum depth of the second incident surface (114), and the first incident surface (113) includes a first area (116) and a second area (117) arranged along the groove depth direction, and the first area (116) is symmetrical to the second incident surface (114).

9. The linear lens according to claim 8, wherein: It also includes a symmetry plane (14), wherein the first region (116) and the second incident surface (114) are symmetrical to the symmetry plane (14); In the longitudinal section of the lens (1), the angle between the tangent line of the first reflecting surface (131) at any depth and the symmetry plane (14) is smaller than the angle between the tangent line of the second reflecting surface (132) at the same depth and the symmetry plane (14).

10. The linear lens according to claim 6, wherein: The third incident surface (115) is a free-form surface.

11. The linear lens according to claim 4, wherein: In the longitudinal section of the lens (1), the maximum depths of the two groove walls (112) are the same.

12. The linear lens according to claim 11, wherein: The groove bottom (111) is a curved surface convex toward the light incident groove (11); or: the groove bottom (111) is a flat surface; or: the groove bottom (111) is a concave surface.

13. The linear lens according to claim 11, wherein The first reflecting surface (131) comprises at least two light-collecting surfaces (133) distributed along the groove depth direction, and the light-collecting surfaces (133) are concave surfaces facing the interior of the lens (1).

14. The linear lens according to claim 11, wherein: The groove bottom (111) is a concave structure, and the groove bottom (111) includes a first bottom surface (118) and a second bottom surface (119) that form an angle.

15. The linear lens according to claim 14, wherein: The first bottom surface (118) and the second bottom surface (119) are curved surfaces convex toward the light incident groove (11).

16. The linear lens according to claim 14, wherein: The first incident surface (113) and the second incident surface (114) are symmetrical, and / or the first reflecting surface (131) and the second reflecting surface (132) are symmetrical, and / or the first bottom surface (118) and the second bottom surface (119) are symmetrical.

17. A single polarization optical system, characterized in that: The invention comprises a light source (2) and a linear lens as claimed in any one of claims 6 to 10, wherein at least part of the light emitted by the light source (2) enters from the groove wall (112) and is totally reflected by the reflection surface (13) to the light-emitting surface (12); and the emitted light is biased toward one side of the lens (1).

18. A non-polarized optical system, characterized in that: It comprises a light source (2) and a linear lens as claimed in any one of claims 11 to 13, wherein at least part of the light emitted by the light source (2) enters from the groove wall (112) and is totally reflected by the reflection surface (13) to the light emitting surface (12).

19. A dual polarization optical system, characterized in that: The invention comprises a light source (2) and a linear lens as claimed in claim 11, 14, 15 or 16, wherein at least part of the light emitted by the light source (2) enters from the groove wall (112) and is totally reflected by the reflection surface (13) to the light-emitting surface (12); and the emitted light is deflected to both sides of the lens (1).

20. A lamp, characterized in that: It comprises a housing (3), a PCB board (4), and also comprises the single polarized optical system according to claim 17; or the non-polarized optical system according to claim 18; Or: a dual polarization optical system as described in claim 19.

21. The lamp according to claim 20, characterized in that The lens (1) is made of silicone, the housing (3) is a flexible housing, the PCB board (4) is a flexible PCB board, and the light transmittance of the housing (3) is lower than the light transmittance of the lens (1).

22. The lamp according to claim 20, characterized in that The housing (3) is provided with a groove, the lens (1) and the PCB board (4) are located in the groove, and the light-emitting surface (12) is on the same side as the opening of the groove; and: The lens (1) and the housing (3) are integrally formed; or the lens (1) and the housing (3) are separate.

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