Polarizing lens, polarizing and expanding lens and aircraft landing taxiing lamp
By designing multiple sequentially connected deflection parts and diffusion structures on the TIR lens, the functions of polarization and light expansion are realized, solving the problems of complex and high cost design of existing TIR lenses, and achieving efficient realization of various light distributions. .
Patent Information
- Application Number
- CN202411739072.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-01-21
AI Technical Summary
The polarization and light expansion design of existing TIR lenses leads to complex structure, difficult processing and high cost, and it is difficult to achieve multiple light distribution requirements on a TIR lens at the same time.
A polarized lens and polarized light lens are designed. By setting multiple partial discount parts connected in turn on the outlet surface of the TIR lens, combining the diffusion structure, the partial folding and diffusion of the light are achieved.
Realize the requirements of various light distribution in the same lamp, with the advantages of many types of light distribution and small volume, and solve the problem of various light distribution design in the same lens.
Smart Images
Figure CN119333775A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of lighting technology, and relates to a light distribution structure design technology of a lighting fixture, and in particular to a polarized lens, a polarized light expansion lens, and an aircraft landing taxi light. Background Art
[0002] LED lamps are a new generation of lighting sources, which have been widely used in aircrafts due to their many advantages such as low loss, low energy consumption, long life, and environmental protection. When the landing lights and taxi lights of an aircraft are designed separately, they have the disadvantages of occupying a large space and being heavy, so they are often integrated into a landing taxi light. The landing taxi light of this structure usually requires a mechanism to assist in adjusting the angle of the lamp to meet the different light distribution requirements of the landing and taxiing modes.
[0003] At present, the polarization and light expansion design of TIR lenses usually involves designing the internal structure of the TIR lenses, which increases the complexity of the TIR lenses, greatly increases the processing difficulty and cost of the TIR lenses, and currently it is difficult to integrate the polarization and light expansion functions on a TIR lens. Summary of the invention
[0004] In order to solve the technical problems that the polarization and light expansion design of the existing TIR lens leads to the complex structure, great processing difficulty and high cost of the TIR lens, the embodiment of the present invention discloses a polarized lens, which includes a TIR lens, an LED light source is provided at the bottom of the TIR lens, and a polarization structure is provided on the light output surface of the TIR lens.
[0005] Wherein, the polarization structure includes a plurality of deflection parts connected in sequence, the deflection part includes a bottom surface, the bottom surface is parallel to the light-emitting surface of the TIR lens, two opposite sides of the bottom surface are respectively provided with a first slope surface and a second slope surface, the first slope surface is connected to the upper end edge of the second slope surface, and the first slope surface and the second slope surface deflect the light emitted from the light-emitting surface of the TIR lens in one direction or two directions. When the first slope surface is directly connected to the upper end edge of the second slope surface, the cross-sectional shape of the deflection part is a triangle.
[0006] In a first realizable structure of the deflection portion, the angles between the first slope surface and the second slope surface and the bottom surface are both acute angles. In this case, the cross-sectional shape of the deflection portion is an acute triangle, and the first slope surface and the second slope surface deflect the light emitted from the light exit surface of the TIR lens in two directions to form two light spots.
[0007] In a second feasible structure of the deflection portion, one of the first slope surface and the second slope surface forms an acute angle with the bottom surface, and the other slope surface forms a right angle or an obtuse angle with the bottom surface. In this case, the cross-sectional shape of the deflection portion is a right-angled or obtuse-angled triangle, and the first slope surface and the second slope surface deflect the light emitted from the light exit surface of the TIR lens toward the direction of the slope surface with the acute angle to form a light spot.
[0008] In a third achievable structure of the deflection portion, the first slope surface is connected to the second slope surface via the top surface. At this time, the cross-sectional shape of the deflection portion changes from the first and second triangles to a trapezoid. The first slope surface, the second slope surface and the top surface deflect the light emitted from the light exit surface of the TIR lens in 1 to 3 directions.
[0009] In an optional embodiment, the included angle between the first slope surface or the second slope surface and the bottom surface is θ, the deflection angle of the first slope surface or the second slope surface to the light is λ, and the included angle and the deflection angle satisfy Wherein, n is the material refractive index of the TIR lens.
[0010] An embodiment of the present invention further discloses a polarized light-expanding lens, which can not only solve the technical problems that the polarization and light-expanding design of the existing TIR lens leads to the complex structure, great processing difficulty and high cost of the TIR lens, but also solve the technical problem that it is difficult to simultaneously achieve polarization and light-expanding multiple light distribution requirements on a TIR lens. The polarized light-expanding lens includes a TIR lens, an LED light source is provided at the bottom of the TIR lens, and a polarized light-expanding structure is provided on the light-emitting surface of the TIR lens.
[0011] Wherein, the deflection and diffusion structure includes a plurality of deflection parts of the above-mentioned polarized lenses connected in sequence, and a diffusion structure is provided on the first slope surface and / or the second slope surface of the deflection part, and the diffusion structure includes a plurality of corrugations arranged along the width direction of the slope surface. The deflection and diffusion structure deflects and diffuses the light emitted from the light exiting surface of the TIR lens at the same time.
[0012] An embodiment of the present invention further discloses an aircraft landing taxi light, which includes an electrical connector, a driver, a housing, a light source printed circuit board, and a plurality of lenses, wherein the lenses include the polarized lens and / or the polarized light expander lens of the above-mentioned embodiment, and the LED light sources of the polarized lens and the polarized light expander lens are both arranged on the light source printed circuit board.
[0013] In an optional embodiment of the above-mentioned aircraft landing taxi light, the lens also includes a diffusion lens, the diffusion lens includes a TIR lens, an LED light source is provided at the bottom of the TIR lens, a diffusion structure is provided on the light emitting surface of the TIR lens, and the diffusion structure diffuses the light emitted from the light emitting surface of the TIR lens, and includes a plurality of corrugations.
[0014] Compared with the prior art, at least one of the above-mentioned technical solutions adopted in the embodiments of this specification can achieve at least the following beneficial effects: the design of the polarized lens, polarized light expansion lens and aircraft landing taxi light of the present invention can efficiently achieve various light distribution requirements in the same lamp, and has the outstanding advantages of a wide variety of light distributions and a small volume. At the same time, it solves the design problem of the same lens and multiple light distributions under limited space and weight requirements. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0016] Figure 1 This is a schematic diagram of the first structure of the polarized lens disclosed in an embodiment of the present invention;
[0017] Figure 2 A second structural schematic diagram of a polarized lens disclosed in an embodiment of the present invention;
[0018] Figure 3 A third structural schematic diagram of the polarized lens disclosed in an embodiment of the present invention;
[0019] Figure 4 A schematic diagram of a polarization light expansion lens disclosed in an embodiment of the present invention;
[0020] Figure 5 A schematic diagram of an aircraft landing taxi light disclosed in an embodiment of the present invention;
[0021] Figure 6 for Figure 1 Schematic diagram of the light spot produced by the medium polarizing lens;
[0022] Figure 7 for Figure 2 Schematic diagram of the light spot produced by the medium polarizing lens;
[0023] Figure 8 for Figure 4 Schematic diagram of the light spot produced by the center-biased light expansion lens;
[0024] Among them, 1. TIR lens; 2. LED light source; 3. polarization structure; 31. first slope surface; 32. second slope surface; 33. top surface; 4. polarization expansion structure; 5. diffusion structure; 100. polarization lens; 200. polarization expansion lens; 300. diffusion lens. DETAILED DESCRIPTION
[0025] The embodiments of the present application are described in detail below with reference to the accompanying drawings.
[0026] The following describes the implementation methods of the present application through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the following embodiments and the features of the embodiments can be combined with each other in the absence of conflict. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.
[0027] In the description of this embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the invention.
[0028] In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.
[0029] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present disclosure. The illustrations only show components related to the present disclosure rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.
[0030] The embodiment of the present invention discloses a polarized lens, such as Figure 1 and Figure 5 As shown, the polarized lens comprises a TIR lens 1 , an LED light source 2 is disposed at the bottom of the TIR lens 1 , and a polarized structure 3 is disposed on the light emitting surface of the TIR lens 1 .
[0031] Among them, see Figure 1 As shown, the polarization structure includes a plurality of deflection parts connected in sequence, the deflection part includes a bottom surface, the bottom surface is parallel to the light-emitting surface of the TIR lens 1, two opposite sides of the bottom surface are respectively provided with a first slope surface 31 and a second slope surface 32, the first slope surface 31 is connected to the upper end edge of the second slope surface 32, and the first slope surface 31 and the second slope surface 32 deflect the light emitted from the light-emitting surface of the TIR lens 1 in one direction or two directions. When the first slope surface 31 is directly connected to the upper end edge of the second slope surface 32, the cross-sectional shape of the deflection part is a triangle.
[0032] In a first possible configuration of the deflection portion, see Figure 1 As shown, the angles between the first slope 31 and the second slope 32 and the bottom surface are both acute angles. In this case, the cross-sectional shape of the deflection portion is an acute triangle. The first slope 31 and the second slope 32 deflect the light emitted from the light exiting surface of the TIR lens 1 in two directions to form two light spots. Figure 6 As shown, the light emitted from the light emitting surface of the TIR lens 1 forms a light spot after being emitted from the first slope surface 31, and the light emitted from the light emitting surface of the TIR lens 1 forms another light spot after being emitted from the second slope surface 32. The two light spots are at a certain distance from the center point of the original light spot of the light directly emitted from the light emitting surface of the TIR lens 1, so that the position of the entire light spot is offset.
[0033] In a second possible configuration of the deflection portion, see Figure 2 As shown, one of the first slope surface 31 and the second slope surface 32 has an acute angle with the bottom surface, and the other slope surface has a right angle or an obtuse angle with the bottom surface. In this case, the cross-sectional shape of the deflection portion is a right-angled or obtuse triangle. The first slope surface 31 and the second slope surface 32 deflect the light emitted from the light exiting surface of the TIR lens 1 toward the direction of the slope surface with an acute angle to form a light spot. For example: See Figure 7As shown in the figure, when the first slope 31 is an acute angle and the second slope 32 is a right angle or an obtuse angle, the light emitted from the light-emitting surface of the TIR lens 1 will form a light spot after being emitted from the first slope 31, and the light emitted from the light-emitting surface of the TIR lens 1 will be emitted from the second slope 32 and will be continuously emitted between the second slope 32 and the first slope 31 of the deflection part adjacent thereto, and then emitted through the first slope 31 of the deflection part adjacent thereto. It will eventually form a light spot, which is also at a certain distance from the center point of the original light spot of the light directly emitted from the light-emitting surface of the TIR lens 1, so that the position of the entire light spot is offset.
[0034] In a third possible configuration of the deflection portion, see Figure 3 As shown, the first slope surface 31 and the second slope surface 32 are connected via the top surface 33. At this time, the cross-sectional shape of the deflection portion changes from the first and second triangles to a trapezoid. The first slope surface 31, the second slope surface 32 and the top surface 33 deflect the light emitted from the light-emitting surface of the TIR lens 1 in 1 to 3 directions. The difference from the first and second structures is that the light emitted from the light-emitting surface of the TIR lens 1 will also form a light spot after being emitted from the top surface 33. Whether the light spot is deflected is related to whether the top surface 33 is parallel to the light-emitting surface of the TIR lens 1. When they are parallel, the light spot will not be offset. When they are not parallel, the light spot will be offset. It may partially overlap with the adjacent light spot, or it may not partially overlap, which is related to the angle between the top surface 33 and the light-emitting surface of the TIR lens 1.
[0035] In an optional embodiment, the included angle between the first slope 31 or the second slope 32 and the bottom surface is θ, the deflection angle of the light by the first slope 31 or the second slope 32 is λ, and the included angle and the deflection angle satisfy Wherein, n is the material refractive index of the TIR lens 1 .
[0036] In an optional embodiment, when the light emitting angle of the LED light source 2 is γ, the light emitting size is A, and the maximum outer diameter of the TIR lens 1 is D, the minimum scattering angle of the light emitted by the TIR lens 1 is β, wherein,
[0037] The embodiment of the present invention also discloses a polarization and light expansion lens, which can not only solve the technical problems that the polarization and light expansion design of the existing TIR lens leads to the complex structure, great processing difficulty and high cost of the TIR lens, but also solve the technical problem that it is difficult to achieve multiple light distribution requirements of polarization and light expansion on a TIR lens at the same time, see Figure 4 and Figure 5As shown, the polarization light expansion lens comprises a TIR lens 1 , an LED light source 2 is arranged at the bottom of the TIR lens 1 , and a polarization light expansion structure 4 is arranged on the light emitting surface of the TIR lens 1 .
[0038] Among them, see Figure 4 As shown, the deflection and diffusion structure 4 includes a plurality of deflection parts of the above-mentioned polarized lenses connected in sequence, and a diffusion structure 5 is provided on the first slope surface 31 and / or the second slope surface 32 of the deflection part, and the diffusion structure 5 includes a plurality of corrugations arranged along the width direction of the slope surface, and the deflection and diffusion structure 4 deflects and diffuses the light emitted from the light exiting surface of the TIR lens 1. Figure 4 In the above, the partial expansion structure 4 is Figure 1 The deflection part of the polarized lens shown in the figure is provided with a diffusion structure 5, and the deflection diffusion structure 4 of the structure can be formed as follows Figure 8 It should be noted that the diffusion structure 5 can also be arranged as follows: Figure 2 and Figure 3 On the deflection part of the polarizing lens shown, the diffusion structure 5 diffuses the deflected light spot to increase the scattering angle.
[0039] The embodiment of the present invention also discloses an aircraft landing taxi light, see Figure 5 As shown, the aircraft landing taxi light includes an electrical connector, a driver, a housing, a light source printed circuit board and a plurality of lenses, wherein the lenses include the polarized lens 100 and / or the polarized light expander lens 200 of the above-mentioned embodiment, and the LED light sources 2 of the polarized lens 100 and the polarized light expander lens 200 are both arranged on the light source printed circuit board.
[0040] In an optional embodiment of the above aircraft landing taxi light, see Figure 5 As shown, the lens also includes a diffusion lens 300, and the diffusion lens 300 includes a TIR lens 1. An LED light source 2 is provided at the bottom of the TIR lens 1. A diffusion structure 5 is provided on the light-emitting surface of the TIR lens 1. The diffusion structure 5 diffuses the light emitted from the light-emitting surface of the TIR lens and includes multiple corrugations.
[0041] The aircraft landing taxi light of the present invention can integrate three types of lenses: polarizing lens 100, polarizing light diffusing lens 200 and diffusing lens 300. When the aircraft landing taxi light is used, it can be selected according to the requirements of polarization and light diffusing.
[0042] The present invention takes the design of an aircraft landing taxi light as an example, in order to meet the requirements of a scattering angle of 10° in the vertical and horizontal directions of the aircraft, and at the same time require the goals of small space occupation, small volume and light weight, etc., according to the relationship between the minimum angle β that the light can irradiate and the outer diameter D of the TIR lens 1, it can be calculated that the maximum outer diameter D of the TIR lens 1 is 40 mm; that is, when D is 40 mm, the minimum angle of the spot scattering angle that can be optimized by the TIR lens 1 is 10°.
[0043] At the same time, when the deflection angle between the aircraft axis and the lens optical axis is required to make the landing light beam tilt downward by 1.44°, the light beam is deflected in the -Y direction by designing the angle between the first slope 31 and the second slope 32 of the deflection part and the bottom surface. Specifically, according to the beam deflection design method, the corresponding light cone deflection angle is calculated. When the required deflection angle is 1.44°, according to the refraction formula The material of the TIR lens is PMMA, and the refractive index of the material is n=1.49. The geometric deflection angle of the first slope surface 31 or the second slope surface 32 can be calculated, that is, the angle θ=2.85°.
[0044] Furthermore, when the scattering angle of the aircraft landing light is required to be 8°×14°, a deflection structure can be used to disperse the light. According to the method of the present invention, when the angle θ between the first slope 31 and the second slope 32 and the bottom surface is 6° to 8°, and the rounded arc between the top surface 33 and the first slope 31, the second slope 32 and the top surface 33 is 10 mm, the scattering angle can meet the above requirements.
[0045] The designs of the polarized lens, polarized light expansion lens and aircraft landing taxi light of the present invention can efficiently realize various light distribution requirements in the same lamp, and have the outstanding advantages of many types of light distribution and small size. At the same time, it solves the design problem of the same lens and multiple light distributions under limited space and weight requirements.
[0046] Obviously, those skilled in the art should understand that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the embodiments of the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
[0047] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A polarized lens, comprising a TIR lens (1), wherein an LED light source (2) is provided at the bottom of the TIR lens (1), characterized in that: It also comprises a polarizing structure (3), wherein the polarizing structure (3) is arranged on the light emitting surface of the TIR lens (1); The polarization structure comprises a plurality of deflection parts connected in sequence, wherein the deflection part comprises a bottom surface, and two opposite sides of the bottom surface are respectively provided with a first slope surface (31) and a second slope surface (32), wherein the first slope surface (31) is connected to the upper end edge of the second slope surface (32), and the first slope surface (31) and the second slope surface (32) deflect light emitted from the light exit surface of the TIR lens (1) in one direction or two directions.
2. The polarizing lens according to claim 1, wherein: The included angles between the first slope surface (31) and the second slope surface (32) and the bottom surface are both acute angles. The first slope surface (31) and the second slope surface (32) deflect light emitted from the light exit surface of the TIR lens (1) in two directions to form two light spots.
3. The polarizing lens according to claim 1, wherein: Among the first slope surface (31) and the second slope surface (32), one of the slope surfaces forms an acute angle with the bottom surface, and the other slope surface forms a right angle or an obtuse angle with the bottom surface. The first slope surface (31) and the second slope surface (32) deflect light emitted from the light exit surface of the TIR lens (1) toward the direction of the slope surface with the acute angle to form a light spot.
4. The polarizing lens according to any one of claims 1 to 3, characterized in that: The first slope surface (31) and the second slope surface (32) are connected via a top surface (33); the cross-sectional shape of the deflection portion is a trapezoid; the first slope surface (31), the second slope surface (32) and the top surface (33) deflect light emitted from a light-emitting surface of the TIR lens (1) in one to three directions.
5. The polarizing lens according to claim 1, wherein: The included angle between the first slope (31) or the second slope (32) and the bottom surface is θ, the deflection angle of the light by the first slope (31) or the second slope (32) is λ, and the included angle and the deflection angle satisfy Wherein, n is the material refractive index of the TIR lens (1).
6. A polarization light expansion lens, comprising a TIR lens (1), wherein an LED light source (2) is provided at the bottom of the TIR lens (1), characterized in that: It also includes a partial expansion structure (4), wherein the partial expansion structure (4) is arranged on the light exit surface of the TIR lens (1); The deflection and diffusion structure (4) comprises a plurality of deflection parts of the polarized lens according to any one of claims 1 to 5 connected in sequence, a diffusion structure (5) is provided on the first slope surface (31) and / or the second slope surface (32) of the deflection part, and the diffusion structure (5) comprises a plurality of corrugations arranged along the width direction of the slope surface, and the deflection and diffusion structure (4) deflects and diffuses the light emitted from the light exiting surface of the TIR lens (1) at the same time.
7. An aircraft landing taxi light, characterized in that: The invention comprises an electrical connector, a driver, a housing, a light source printed circuit board and a plurality of lenses, wherein the lenses comprise the polarizing lens as claimed in any one of claims 1 to 5 and / or the polarization expanding lens as claimed in claim 6, and the LED light sources (2) of the polarizing lens and the polarization expanding lens are both arranged on the light source printed circuit board.
8. The aircraft landing taxi light according to claim 7, characterized in that: The lens also includes a diffusion lens, which includes a TIR lens (1). An LED light source (2) is provided at the bottom of the TIR lens (1). A diffusion structure (5) is provided on the light-emitting surface of the TIR lens (1). The diffusion structure (5) diffuses light emitted from the light-emitting surface of the TIR lens (1) and includes a plurality of corrugations.