Free-form surface lens landing lamp optical structure

Abstract

The invention discloses a free-form surface lens landing lamp optical structure. The landing lamp optical structure comprises a landing lamp panel, and a center LED lamp bead, an inner ring LED lamp bead and an outer ring LED lamp bead are arranged on the landing lamp panel. The inner-ring LED lamp beads are arranged between the central LED lamp bead and the outer-ring LED lamp beads in a surrounding manner; wherein. The central LED lamp bead is an infrared LED, and the inner ring LED lamp beads and the outer ring LED lamp beads are visible light LEDs. The center LED lamp bead, the inner ring LED lamp beads and the outer ring LED lamp beads are all provided with free-form surface lenses. The invention has the beneficial effects that the free-form surface lens is used for light distribution, so that the light energy loss is reduced; the optical structure has a friendly working mode and a hidden working mode.

Description

Technical Field

[0001] The invention relates to an aircraft landing light, in particular to an optical structure of a free-form surface lens landing light. Background Art

[0002] The existing landing light optical structure uses a reflective bowl for light distribution. The disadvantage is that the light source needs to be distributed multiple times to meet the light performance requirements, resulting in a large loss of light energy.

[0003] With the advancement of technology, a new type of lens has been added, namely free-form surface lens. The advantages of free-form surface lens are: the light distribution angle can be customized, no need for multiple light distribution, and effectively improve the utilization rate of light energy. Summary of the invention

[0004] The invention provides a novel free-form surface lens landing light optical structure, aiming at solving the problem that the existing aircraft landing light adopts a reflective bowl for light distribution.

[0005] In order to achieve the above-mentioned purpose, the technical scheme of the present invention is as follows: a free-form surface lens landing light optical structure, comprising: a landing light board, the landing light board is arranged with a central LED lamp bead, an inner ring LED lamp bead, and an outer ring LED lamp bead, the inner ring LED lamp bead surrounds the central LED lamp bead and the outer ring LED lamp bead; wherein the central LED lamp bead is an infrared LED, and the inner ring LED lamp bead and the outer ring LED lamp bead are both visible light LEDs; wherein the central LED lamp bead, the inner ring LED lamp bead and the outer ring LED lamp bead are all configured with a free-form surface lens, the free-form surface lens configured with the central LED lamp bead is used to determine the scattering angle range of the optical structure in the concealed mode, the free-form surface lens configured with the inner ring LED lamp bead is used to determine the horizontal scattering angle range of the optical structure in the friendly mode, and the free-form surface lens configured with the outer ring LED lamp bead is used to determine the vertical scattering angle range of the optical structure in the friendly mode.

[0006] As a preferred solution for the optical structure of a free-form lens landing light, the number of the central LED lamp beads is 1, the number of the inner circle LED lamp beads is 5, and the number of the outer circle LED lamp beads is 10.

[0007] As a preferred solution for the optical structure of a free-form lens landing light, the inner ring LED lamp beads are evenly arranged along the circumferential direction, and the outer ring LED lamp beads are evenly arranged along the circumferential direction.

[0008] Compared with the prior art, the beneficial effects of the present invention are at least that: by using free-form surface lenses for light distribution, light energy loss is reduced; and the optical structure has two working modes: friendly and concealed. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic structural diagram (three-dimensional diagram) of an embodiment of the present invention.

[0010] Figure 2 Schematic diagram of the layout of the free-form surface lens in one embodiment of the present invention.

[0011] Figure 3 Schematic diagram of LED layout in one embodiment of the present invention.

[0012] Figure 4 It is an optical simulation diagram of the friendly mode according to an embodiment of the present invention.

[0013] Figure 5 It is an optical simulation diagram of the stealth mode according to an embodiment of the present invention. Implementation

[0014] The present invention is further described in detail below by means of specific embodiments in combination with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each embodiment of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0015] See also Figures 1 to 3 , the figure shows a new type of free-form lens landing light optical structure. The optical structure includes: a landing light board 1. The landing light board 1 is arranged with a central LED lamp bead 21, an inner circle LED lamp bead 22, and an outer circle LED lamp bead 23. The inner circle LED lamp bead 22 surrounds the central LED lamp bead 21 and the outer circle LED lamp bead 23. Among them, the central LED lamp bead 21 is an infrared LED, and the inner circle LED lamp bead 22 and the outer circle LED lamp bead 23 are both visible light LEDs. Among them, the central LED lamp bead 21, the inner circle LED lamp bead 22 and the outer circle LED lamp bead 23 are all configured with free-form lenses 31, 32, 33. The number of the central LED lamp bead is 1, the number of the inner circle LED lamp bead is 5, and the number of the outer circle LED lamp bead is 10. The inner circle LED lamp bead 22 is evenly arranged along the circumferential direction, and the outer circle LED lamp bead 23 is evenly arranged along the circumferential direction.

[0016] Regarding the free-form surface lenses 31, 32, and 33: according to the free-form surface design method, the optical design software LIGHTTOOLS is used to preliminarily build the three-dimensional lens, and the lens parameters are optimized based on the optimization algorithm of LIGHTTOOLS. Then, the three-dimensional lens is imported into the 3D modeling software CATIA to further refine the lens structure, and finally the optical software SPEOS is used to perform simulation to verify the central light intensity and scattering angle.

[0017] The free-form surface lens 32 configured with the inner ring LED lamp beads 22 is used to determine the horizontal scattering angle range of the optical structure in the friendly mode. The free-form surface lens 33 configured with the outer ring LED lamp beads 23 is used to determine the vertical scattering angle range of the optical structure in the friendly mode. Figure 4 , the figure shows the optical simulation diagram of the friendly mode.

[0018] The free-form surface lens 31 configured with the central LED lamp bead 21 is used to determine the scattering angle range of the optical structure in the concealed mode. Figure 5 , the figure shows the optical simulation diagram of the stealth mode.

[0019] The above only expresses the implementation mode of the present invention, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A free-form surface lens landing light optical structure, characterized in that: include: A landing light board, wherein the landing light board is arranged with a central LED lamp bead, an inner ring LED lamp bead, and an outer ring LED lamp bead, wherein the inner ring LED lamp bead surrounds the central LED lamp bead and the outer ring LED lamp bead; wherein the central LED lamp bead is an infrared LED, and the inner ring LED lamp bead and the outer ring LED lamp bead are both visible light LEDs; wherein the central LED lamp bead, the inner ring LED lamp bead and the outer ring LED lamp bead are all configured with a free-form surface lens, the free-form surface lens configured with the central LED lamp bead is used to determine the scattering angle range of the optical structure in the concealed mode, the free-form surface lens configured with the inner ring LED lamp bead is used to determine the horizontal scattering angle range of the optical structure in the friendly mode, and the free-form surface lens configured with the outer ring LED lamp bead is used to determine the vertical scattering angle range of the optical structure in the friendly mode.

2. The free-form surface lens landing light optical structure according to claim 1, characterized in that: The number of the central LED lamp beads is 1, the number of the inner circle LED lamp beads is 5, and the number of the outer circle LED lamp beads is 10.

3. The free-form surface lens landing light optical structure according to claim 2, characterized in that: The inner ring LED lamp beads are evenly arranged along the circumferential direction, and the outer ring LED lamp beads are evenly arranged along the circumferential direction.

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