Lighting projection assembly and welcome light

Abstract

The application discloses a kind of lighting projection components and welcome lamp, above-mentioned lighting projection component, including lighting component, imaging component and shell;Imaging component and lighting component are sequentially installed in shell from object side to image side;Imaging component sequentially includes along image side to object side: the first lens with positive focal power;Second lens with negative focal power;Third lens with focal power;Imaging component satisfies following conditional expression: 0.049<(tanSemi-Fov×ImgH) / f<0.174.By constraining the range of (tanSemi-Fov×ImgH) / f, the lighting projection component not only has a larger pattern projection range, but also controls the focal length of the imaging component within a suitable range, which is beneficial to controlling the length of the imaging component, thereby controlling the overall length of the lighting projection component, making the length of the lighting projection component shorter, which is beneficial to the miniaturization of the lighting projection component.

Description

Technical Field

[0001] This invention relates to the field of optical imaging technology, and more particularly to an illumination projection component and a welcome light. Background Technology

[0002] As automobiles continue to develop towards intelligence and technology, many cars on the market now have welcome lights installed on their exterior rearview mirrors. When welcome lights are installed on the exterior rearview mirrors, they can project patterns or graphics onto the ground as people get in and out of the car, thereby increasing the car's sense of technology.

[0003] However, with the development of the welcome light market, the demand for the patterns projected by welcome lights is increasing, and the clarity of the projected patterns is also becoming more stringent. Furthermore, the length and dimensions of the welcome lights themselves are becoming increasingly refined and compact. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a lighting projection component and a welcome light with a large projection pattern area and a small external length.

[0005] In a first aspect, an illumination projection assembly includes a housing, an illumination assembly for focusing light from a light source, and an imaging assembly for adjusting the field of view of the light image; the imaging assembly and the illumination assembly are sequentially mounted within the housing from the object side to the image side; characterized in that the imaging assembly comprises, in sequence from the image side to the object side:

[0006] The first lens with positive optical power has an image-side surface that is convex near the optical axis.

[0007] The second lens with negative optical power has an image-side surface that is concave near the optical axis.

[0008] A third lens with optical power has an object-side surface that is concave near the optical axis;

[0009] The imaging component satisfies the following condition:

[0010] 0.049<(tanSemi-Fov×ImgH) / f<0.174;

[0011] Wherein, Semi-Fov is half of the maximum field of view of the imaging component, f is the total effective focal length of the imaging component, and ImgH is the maximum image height of the imaging component.

[0012] In one embodiment, the imaging component satisfies the following condition:

[0013] 1.032 <TTL / f<1.610;

[0014] Where TTL is the distance on the optical axis from the image side of the first lens to the object side of the imaging assembly, and f is the total effective focal length of the imaging assembly.

[0015] In one embodiment, the imaging component satisfies the following condition:

[0016] -0.180 < (f3 - f2) / f1 < 5.388;

[0017] Wherein, f1 is the effective focal length of the first lens, f2 is the effective focal length of the second lens, and f3 is the effective focal length of the third lens.

[0018] In one embodiment, the imaging component satisfies the following condition:

[0019] 1.597 <TTL / (CT1+CT2+CT3)<2.401;

[0020] Wherein, TTL is the distance on the optical axis from the image side of the first lens to the object side of the imaging component, CT1 is the center thickness of the first lens on the optical axis, CT2 is the center thickness of the second lens on the optical axis, and CT3 is the center thickness of the third lens on the optical axis.

[0021] In one embodiment, the imaging component satisfies the following condition:

[0022] 0.149 <R32 / f<0.564;

[0023] Wherein, R32 is the radius of curvature of the side surface of the third lens, and f is the total effective focal length of the imaging assembly.

[0024] In one embodiment, the imaging component satisfies the following condition:

[0025] 0.057<(T12+T23) / (CT1+CT2+CT3)<0.318;

[0026] Wherein, T12 is the air gap between the first lens and the second lens on the optical axis; T23 is the air gap between the second lens and the third lens on the optical axis; CT1 is the center thickness of the first lens on the optical axis; CT2 is the center thickness of the second lens on the optical axis; and CT3 is the center thickness of the third lens on the optical axis.

[0027] In one embodiment, the imaging component satisfies the following condition:

[0028] 2.424<(DT32+DT31) / (SAG32+SAG31)<4.312;

[0029] Wherein, DT31 is the maximum effective half-aperture of the image side of the third lens; DT32 is the maximum effective half-aperture of the object side of the third lens; SAG31 is the distance on the optical axis from the intersection of the image side of the third lens and the optical axis to the vertex of the effective radius of the image side of the third lens; SAG32 is the distance on the optical axis from the intersection of the object side of the third lens and the optical axis to the vertex of the effective radius of the object side of the third lens.

[0030] In one embodiment, the lighting assembly includes a fourth lens and a fifth lens;

[0031] The fourth lens and the fifth lens are installed sequentially from the object side to the image side inside the housing, with the fifth lens located on the object side of the fourth lens.

[0032] In one embodiment, the end of the outer casing has an edge integrally formed with the end.

[0033] In a second aspect, a welcome light is provided, including an illumination projection component as described in any possible implementation of the first aspect.

[0034] The beneficial effects of this invention are as follows:

[0035] When the image height ImgH of the imaging component is constant, constraining the range of the field of view can control the field of view of the imaging component within the required range. This allows the pattern range projected by the illumination projection component to range from 373mm×180mm (length×width) to 1286mm×601mm (length×width), greatly improving the application range of the illumination projection component. Furthermore, based on constraining tanSemi-Fov×ImgH, further constraining the range of (tanSemi-Fov×ImgH) / f not only allows the illumination projection component to have a larger pattern projection range but also controls the focal length of the imaging component within a suitable range. This facilitates control over the length of the imaging component, thereby controlling the overall length of the illumination projection component and making it shorter, which is beneficial for miniaturization. Attached Figure Description

[0036] Figure 1 This is a schematic structural diagram of the imaging component of Embodiment 1 of this application;

[0037] Figure 2 This is a positioning diagram of the pattern on the film in the lighting projection assembly of Embodiment 1 of this application;

[0038] Figure 3 and Figure 4 These are, respectively, measurement drawings of the projection pattern in the length and width directions of Embodiment 1 of this application;

[0039] Figures 5 to 8The images shown in sequence are the spherical aberration curve, astigmatism curve, distortion diagram, and magnification chromatic aberration diagram of the imaging component of Embodiment 1 of this application;

[0040] Figure 9 This is a schematic structural diagram of the imaging component of Embodiment 2 of this application;

[0041] Figure 10 This is a positioning diagram of the pattern on the film in the lighting projection assembly of Embodiment 2 of this application;

[0042] Figure 11 and Figure 12 These are, respectively, measurement drawings of the projection pattern in the length and width directions of Embodiment 2 of this application;

[0043] Figures 13 to 16 The images shown in sequence are the spherical aberration curve, astigmatism curve, distortion diagram, and magnification chromatic aberration diagram of the imaging component of Embodiment 2 of this application;

[0044] Figure 17 This is a schematic structural diagram of the imaging component of Embodiment 3 of this application;

[0045] Figure 18 This is a positioning diagram of the pattern on the film in the lighting projection assembly of Embodiment 3 of this application;

[0046] Figure 19 and Figure 20 These are, respectively, measurement drawings of the projection pattern in the length and width directions of Embodiment 3 of this application;

[0047] Figures 21 to 24 The images shown in sequence are the spherical aberration curve, astigmatism curve, distortion diagram, and magnification chromatic aberration diagram of the imaging component of Embodiment 3 of this application;

[0048] Figure 25 This is a schematic structural diagram of the imaging component of Embodiment 4 of this application;

[0049] Figure 26 This is a positioning diagram of the pattern on the film in the lighting projection assembly of Embodiment 4 of this application;

[0050] Figure 27 and Figure 28 These are, respectively, measurement drawings of the projection pattern in the length and width directions of Embodiment 4 of this application;

[0051] Figures 29 to 32 The images shown in sequence are the spherical aberration curve, astigmatism curve, distortion diagram, and magnification chromatic aberration diagram of the imaging component of Embodiment 4 of this application;

[0052] Figure 33 This is a schematic structural diagram of the imaging component of Embodiment 5 of this application;

[0053] Figure 34This is a positioning diagram of the pattern on the film in the lighting projection assembly of Embodiment 5 of this application;

[0054] Figure 35 and Figure 36 These are, respectively, measurement drawings of the projection pattern in the length and width directions of Embodiment 5 of this application;

[0055] Figures 37 to 40 The images shown in sequence are the spherical aberration curve, astigmatism curve, distortion diagram, and magnification chromatic aberration diagram of the imaging component of Embodiment 5 of this application;

[0056] Figure 41 This is a schematic structural diagram of the lighting projection component of this application;

[0057] Figure 42 This is a schematic structural diagram of the housing in the lighting projection assembly of this application.

[0058] In the diagram: 100, Illumination projection assembly; 10, Imaging assembly; 11, First lens; 12, Second lens; 13, Third lens; 14, Fourth lens; 15, Fifth lens; 16, Housing; 161, Edge banding; 17, Film holder; 18, Film. Detailed Implementation

[0059] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0060] For ease of understanding, the technical terms used in this application will be explained and described below.

[0061] It should be noted that, for ease of understanding and description, the embodiments of this application define the representation of relevant parameters of the imaging component. For example, TTL represents the distance on the optical axis from the object side of the first lens to the imaging surface of the optical lens; ImgH represents the maximum image height of the imaging component. The letter representations in similar definitions are merely illustrative and can of course be represented in other forms. This application does not impose any limitations on them.

[0062] It should also be noted that the units of the parameters involving ratios in the following formulas are consistent. For example, the unit of the numerator is millimeters (mm), and the unit of the denominator is also millimeters (mm).

[0063] It should also be noted that the sign of the radius of curvature indicates whether the optical surface is convex to the object side or the image side. When the optical surface (including the object side or the image side) is convex to the image side, the radius of curvature of the optical surface is positive; when the optical surface (including the object side or the image side) is convex to the object side, it is equivalent to the optical surface being concave to the object side, and the radius of curvature of the optical surface is negative.

[0064] It should also be noted that the shape of the lens and the degree of concavity and convexity of the object side and image side in the accompanying drawings are merely schematic and do not limit the embodiments of this application. In this application, the lens material can be resin, plastic, or glass. Lenses include spherical lenses and aspherical lenses. The lens can be a fixed focal length lens, a zoom lens, a standard lens, a short focal length lens, or a long focal length lens.

[0065] See Figure 1 , Figure 41 ,as well as Figure 42 , Figure 1 The dashed line is used to represent the optical axis.

[0066] Please see Figure 1 The illumination projection assembly 100 in this embodiment includes a housing 16, an illumination assembly for focusing light from a light source, and an imaging assembly 10 for adjusting the field of view of the light image. The imaging assembly and the illumination assembly are sequentially installed in the housing 16 from the object side to the image side. The imaging assembly 10 sequentially includes, from the image side to the object side: a first lens 11 with positive optical power, whose object side is convex near the optical axis and whose image side is convex near the optical axis; a second lens 12 with negative optical power, whose object side is convex near the optical axis and whose image side is concave near the optical axis; and a third lens 13 with optical power, whose object side is concave near the optical axis and whose image side is convex near the optical axis. A film 18 is installed between the imaging assembly 10 and the illumination assembly, and the film 18 is positioned and installed by a film holder 17. The illumination assembly includes a fourth lens 14 and a fifth lens 15 sequentially installed on the image side of the film 18, with the fifth lens 15 located on the object side of the fourth lens 14.

[0067] In this embodiment, the illumination projection component 100 satisfies the following conditional formula: 0.049 < (tanSemi-Fov × ImgH) / f < 0.174; (tanSemi-Fov × ImgH) / f can be 0.049, 0.066, 0.116, 0.147, or 0.174; when the image height of the imaging component is constant, by restricting the range of the field angle, the field angle of the imaging component can be controlled within the required range, so that the pattern range projected by the illumination projection component can reach from length × width: 340 mm × 120 mm to length × width: 1300 mm × 600 mm, greatly improving the usage range of the illumination projection component; in addition, on the basis of restricting tanSemi-Fov × ImgH, further restricting the range of (tanSemi-Fov × ImgH) / f enables the illumination projection component to not only have a large pattern projection range, but also control the focal length of the imaging component within a suitable range, which is beneficial to controlling the length of the imaging component, thereby controlling the overall length of the illumination projection component, making the length of the illumination projection component shorter, which is beneficial to miniaturization.

[0068] In one embodiment, the illumination projection component 100 satisfies the following conditional formula: 1.032 < TTL / f < 1.610; TTL / f can be 1.032, 1.094, 1.423, 1.525, or 1.610; restricting the ratio range of TTL / f can effectively control the length of the imaging component, achieve miniaturization of the imaging component, and thus further facilitate miniaturization of the illumination projection component.

[0069] In one embodiment, the illumination projection component 100 satisfies the following conditional formula: -0.18 < (f3 - f2) / f1 < 5.388; (f3 - f2) / f1 can be 2.320, -0.180, 2.206, 2.184, or 5.388; by reasonably allocating the effective focal lengths of the first lens, the second lens, and the third lens, the system chromatic aberration of the imaging component can be effectively corrected, distortion and coma can be improved, the resolution of the imaging component can be increased, and thus the clarity of the pattern projected by the illumination projection component can be improved; in addition, by reasonably allocating the effective focal lengths of the first lens, the second lens, and the third lens, the process sensitivity of the imaging component can be reduced, and the yield of imaging component production can be increased.

[0070] In one embodiment, the illumination projection component 100 satisfies the following conditional formula: 1.597 < TTL / (CT1 + CT2 + CT3) < 2.401; TTL / (CT1 + CT2 + CT3) can be 2.121, 2.401, 1.949, 1.774 or 1.597; by restricting the proportion of the sum of the central thicknesses of the first lens, the second lens and the third lens in the total length of the imaging component, it is beneficial to control the sum of the central thicknesses of the first lens, the second lens and the third lens, and further beneficial to the miniaturization of the imaging component.

[0071] In one embodiment, the illumination projection component 100 satisfies the following conditional formula: 0.149 < R32 / f < 0.564; R32 / f can be 0.218, 0.149, 0.480, 0.564 or 0.467; by restricting the range of the ratio of the radius of curvature of the image side of the third lens to the focal length of the imaging component, the focusing efficiency of light on the image plane of the third lens can be slowed down, which is beneficial to correcting spherical aberration and chromatic aberration in the imaging component, thereby being beneficial to improving the imaging quality of the imaging component and further improving the clarity of the projection pattern of the illumination projection component.

[0072] In one embodiment, the illumination projection component 100 satisfies the following conditional formula: 0.057 < (T12 + T23) / (CT1 + CT2 + CT3) < 0.318; (T12 + T23) / (CT1 + CT2 + CT3) can be 0.057, 0.076, 0.318, 0.227 or 0.179; by restricting the range of the ratio of the radius of curvature of the image side of the third lens to the focal length of the imaging component, the focusing efficiency of light on the image plane of the third lens can be slowed down, which is beneficial to correcting spherical aberration and chromatic aberration in the imaging component, thereby being beneficial to improving the imaging quality of the imaging component and further improving the clarity of the projection pattern of the illumination projection component.

[0073] In one embodiment, the illumination projection component 100 satisfies the following conditional formula: 2.424 < (DT32 + DT31) / (SAG32 + SAG31) < 4.312; (DT32 + DT31) / (SAG32 + SAG31) can be 4.312, 3.220, 2.424, 2.759 or 3.482; by controlling the sum of the maximum effective radius of the object side of the third lens and the maximum effective radius of the image side of the third lens, the bending degree of the object side and the image side of the third lens is made smaller, and the light is more gentle after being refracted by the third lens, which is beneficial to reducing the distortion of the imaging component and improving the stability of the imaging quality of the imaging component. By controlling the sagitta of the object side of the third lens and the sagitta of the image side of the third lens, the ghost images on both sides of the third lens can be effectively improved, the imaging quality of the imaging component can be improved, and thus the clarity of the projection pattern of the illumination projection component can be improved.

[0074] See Figure 41and Figure 42 The illumination assembly includes a fourth lens 14 and a fifth lens 15. The fifth lens 15 is located on the object side of the fourth lens 14. After passing through the fourth lens 14 and the fifth lens 15, the light becomes horizontal and exits onto the film 18; or the light from the fourth lens 14 and the fifth lens 15 converges at a certain angle and exits onto the film 18. A light-transmitting pattern to be projected is formed on the image side of the film 18 through magnetron sputtering and photolithography. Depending on the length and width of the pattern to be projected, the size, shape, and angle of the pattern on the film 18 will vary. For details, please refer to the positioning diagram of the pattern on the film in each embodiment. In another embodiment, the fourth lens 14 is located on the object side of the third lens 13, and the fifth lens 15 is located on the object side of the fourth lens 14.

[0075] The object-side end of the housing 16 has an integrally formed edging 161. The object-side surface of the edging 161 abuts against the edges of both ends of the image-side surface of the first lens 11. The integrally formed edging 161 makes the imaging assembly 10 installed inside the housing 16 more secure and improves the service life of the illumination projection assembly.

[0076] Secondly, the present invention also provides a welcome light, including the lighting projection component in any possible implementation of the first aspect described above. Installing the welcome light of this application at the foot pedal of a car allows the tilted pattern in the film to be projected onto the ground directly, avoiding the situation where the projected pattern is blocked when a person gets out of the car.

[0077] The following will combine Figures 1 to 42 Some specific, but not limiting, examples of embodiments of this application are described in more detail.

[0078] Example 1

[0079] The features, principles, and other aspects of this application will be described in detail below. For ease of description, in the following embodiments, STO represents the surface of the aperture stop, S1 represents the image-side surface of the first lens 11, S2 represents the object-side surface of the first lens 11, S3 represents the image-side surface of the second lens 12, S4 represents the object-side surface of the second lens 12, S5 represents the image-side surface of the third lens 13, S6 represents the object-side surface of the third lens 13, and S7 represents the object-side surface of the imaging assembly.

[0080] Please see Figure 1 , Figure 1The dashed line is used to represent the optical axis. The illumination projection assembly in this embodiment includes an illumination assembly for focusing light from a light source, an imaging assembly for adjusting the field of view of the light image, and a housing; the imaging assembly and the illumination assembly are sequentially installed within the housing from the object side to the image side; the imaging assembly sequentially includes, from the image side to the object side: a first lens with positive optical power, whose object side is convex near the optical axis and whose image side is convex near the optical axis; a second lens with negative optical power, whose object side is convex near the optical axis and whose image side is concave near the optical axis; and a third lens with negative optical power, whose object side is concave near the optical axis and whose image side is convex near the optical axis.

[0081] Let TTL represent the total optical length of imaging component 10, ImgH represent the maximum image height of imaging component 10, and EFL represent the effective focal length of imaging component 10. Let αi represent the i-th order aspherical coefficient, i = 4, 6, 8, 10, 12, 14, 16, and K represent the conic coefficient. Based on the above relationships, Table 1 shows the effective focal length EFL, maximum field of view FOV, total optical length TTL, aperture F-number F.No., surface type, radius of curvature, thickness, material refractive index, and conic coefficient of imaging component 10 in Embodiment 1. The units for radius of curvature and thickness are millimeters (mm), as shown in Table 1.

[0082] Table 1

[0083]

[0084] Table 2 shows the aspheric coefficients of the illumination projection component 100 of Embodiment 1 of this application, as shown in Table 2:

[0085] Face number A4 A6 A8 A10 A12 A14 A16 S1 1.294E-02 -2.280E-03 6.671E-04 -1.670E-04 2.691E-05 -2.349E-06 8.209E-08 S2 3.835E-04 2.996E-04 9.059E-06 -1.307E-05 1.539E-06 -2.227E-07 1.860E-08 S3 3.263E-05 9.228E-04 -9.982E-05 -8.860E-06 1.628E-06 -4.784E-08 3.159E-09 S4 1.321E-03 9.414E-04 -4.415E-04 6.234E-05 -1.698E-06 -2.990E-08 -8.427E-09 S5 1.002E-02 -5.028E-03 2.781E-04 -3.542E-05 2.032E-06 1.841E-06 -4.608E-08 S6 1.439E-02 -3.808E-03 3.612E-05 1.284E-04 -2.516E-06 -1.630E-05 3.990E-06

[0086] Among them, the non-curved surfaces of each lens in the imaging assembly 10 satisfy:

[0087]

[0088] Where x is the distance vector from the vertex of the aspherical surface at a height of h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / r (i.e., the paraxial curvature c is the reciprocal of the radius of curvature r in Table 1 above); k is the conic constant (given in Table 1 above); Ai is the in-th order correction coefficient of the aspherical surface, and the higher-order coefficients A4, A6, A8, A10, A12, A14 and A16 of each lens surface S1-S6 are shown in Table 2.

[0089] It should be understood that the aspherical surfaces of each lens in the imaging assembly 10 may use the aspherical surface shown in the above-described aspherical surface formula, or may use other aspherical surface formulas, and this application does not limit them.

[0090] The above provides design data for the imaging component 10 of Embodiment 1 of this application, which has an effective focal length (EFL) of 10.840 mm, a maximum field of view (Fov) of 23.990 degrees, a total optical length (TTL) of 11.185 mm, and an aperture (F.No.) of 2.130.

[0091] In one embodiment provided in this application, (tanSemi-Fov×ImgH) / f=0.049.

[0092] In one embodiment provided in this application, TTL / f = 1.032.

[0093] In one embodiment provided in this application, (f3-f2) / f1 = 2.320.

[0094] In one embodiment provided in this application, TTL / (CT1+CT2+CT3)=2.121.

[0095] In one embodiment provided in this application, R32 / f = 0.218.

[0096] In one embodiment provided in this application, (T12+T23) / (CT1+CT2+CT3)=0.057.

[0097] In one embodiment provided in this application, (DT32+DT31) / (SAG32+SAG31)=4.312.

[0098] See Figure 2 In Example 1, a light-transmitting pattern to be projected is formed on the image side of the film 18 by magnetron sputtering and photolithography. The image side of the film 18 is the object side S7 of the imaging component 10, and the pattern to be projected is tilted on the film. Figure 3 and Figure 4 The performance of the pattern projected by the lighting projection component in Example 1 is described. The pattern projected by the lighting projection component in Example 1 has a length × width of 373mm × 180mm. Figures 5 to 8 The optical performance of the imaging component 10 is described, ensuring the clarity of the pattern projected by the illumination projection component.

[0099] Example 2

[0100] In Embodiment 2, STO represents the surface of the aperture, S1 represents the image-side surface of the first lens 11, S2 represents the object-side surface of the first lens 11, S3 represents the image-side surface of the second lens 12, S4 represents the object-side surface of the second lens 12, S5 represents the image-side surface of the third lens 13, S6 represents the object-side surface of the third lens 13, and S7 represents the object-side surface of the imaging component.

[0101] Please see Figure 9 , Figure 9 The dashed line is used to represent the optical axis. The illumination projection assembly in this embodiment includes an illumination assembly for focusing light from a light source, an imaging assembly for adjusting the field of view of the light image, and a housing; the imaging assembly and the illumination assembly are sequentially installed within the housing from the object side to the image side; the imaging assembly sequentially includes, from the image side to the object side: a first lens with positive optical power, whose object side is convex near the optical axis and whose image side is convex near the optical axis; a second lens with negative optical power, whose object side is convex near the optical axis and whose image side is concave near the optical axis; and a third lens with negative optical power, whose object side is concave near the optical axis and whose image side is convex near the optical axis.

[0102] Let TTL represent the total optical length of the imaging component 10, ImgH represent the maximum image height of the imaging component 10, and EFL represent the effective focal length of the imaging component 10. Let αi represent the i-th order aspherical coefficient, i = 4, 6, 8, 10, 12, 14, 16, and K represent the conic coefficient. Based on the above relationships, Table 3 shows the effective focal length EFL, maximum field of view FOV, total optical length TTL, aperture F-number F.No., surface type, radius of curvature, thickness, material refractive index, and conic coefficient of the imaging component 10 in Embodiment 2. The units for radius of curvature and thickness are millimeters (mm), as shown in Table 3.

[0103] Table 3

[0104]

[0105]

[0106] Table 4 shows the aspheric coefficients of the lighting projection component 100 in Embodiment 2 of this application, as shown in Table 4:

[0107] Face number A4 A6 A8 A10 A12 A14 A16 S1 1.166E-02 -1.550E-03 2.368E-04 -4.318E-05 4.561E-06 -4.538E-08 -4.537E-08 S2 -3.513E-03 -5.061E-05 -1.542E-05 5.712E-06 -9.206E-08 -2.975E-07 2.123E-08 S3 -2.165E-03 5.531E-04 -4.121E-05 -8.005E-06 1.539E-06 3.034E-07 -4.271E-08 S4 8.944E-04 1.253E-05 -1.791E-04 3.151E-05 1.071E-06 -3.233E-07 3.091E-08 S5 -1.596E-02 -2.958E-03 2.156E-04 4.056E-06 7.825E-06 1.694E-06 -1.135E-07 S6 -1.904E-03 -2.303E-03 -5.954E-04 4.801E-04 -7.595E-06 -3.218E-05 5.839E-06

[0108] Among them, the non-curved surfaces of each lens in the imaging assembly 10 satisfy:

[0109]

[0110] Where x is the distance vector from the vertex of the aspherical surface at a height of h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / r (i.e., the paraxial curvature c is the reciprocal of the radius of curvature r in Table 3 above); k is the conic constant (given in Table 3 above); Ai is the in-th order correction coefficient of the aspherical surface, and the higher-order coefficients A4, A6, A8, A10, A12, A14 and A16 of each lens surface S1-S6 are shown in Table 4.

[0111] It should be understood that the aspherical surfaces of each lens in the imaging assembly 10 may use the aspherical surface shown in the above-described aspherical surface formula, or may use other aspherical surface formulas, and this application does not limit them.

[0112] The above provides design data for the imaging component 10 of Embodiment 2 of this application, which has an effective focal length (EFL) of 9.405 mm, a maximum field of view (Fov) of 28.002°, a total optical length (TTL) of 10.29 mm, and an aperture (F.No.) of 2.122.

[0113] In one embodiment provided in this application, (tanSemi-Fov×ImgH) / f=0.066.

[0114] In one embodiment provided in this application, TTL / f = 1.094.

[0115] In one embodiment provided in this application, (f3-f2) / f1 = -0.180.

[0116] In one embodiment provided in this application, TTL / (CT1+CT2+CT3)=2.401.

[0117] In one embodiment provided in this application, R32 / f = 0.149.

[0118] In one embodiment provided in this application, (T12+T23) / (CT1+CT2+CT3)=0.076.

[0119] In one embodiment provided in this application, (DT32+DT31) / (SAG32+SAG31)=3.220.

[0120] See Figure 10 In embodiment 2, a light-transmitting pattern to be projected is formed on the image side of the film 18 by magnetron sputtering and photolithography. The image side of the film 18 is the object side S7 of the imaging component 10, and the pattern to be projected is tilted on the film. Figure 11 and Figure 12 The performance of the pattern projected by the illumination projection assembly 100 of Embodiment 2 is described. The illumination projection assembly of Embodiment 2 projects a pattern with a length × width of 574mm × 274mm. Figures 13 to 16 The optical performance of the imaging component 10 is described, ensuring the clarity of the pattern projected by the illumination projection component.

[0121] Example 3

[0122] In Embodiment 3, STO represents the surface of the aperture, S1 represents the image side of the first lens 11, S2 represents the object side of the first lens 11, S3 represents the image side of the second lens 12, S4 represents the object side of the second lens 12, S5 represents the image side of the third lens 13, S6 represents the object side of the third lens 13, and S7 represents the object side of the imaging component.

[0123] Please see Figure 17 , Figure 17 The dashed line is used to represent the optical axis. The illumination projection assembly in this embodiment includes an illumination assembly for focusing light from a light source, an imaging assembly for adjusting the field of view of the light image, and a housing; the imaging assembly and the illumination assembly are sequentially installed within the housing from the object side to the image side; the imaging assembly sequentially includes, from the image side to the object side: a first lens with positive optical power, whose object side is convex near the optical axis and whose image side is convex near the optical axis; a second lens with negative optical power, whose object side is convex near the optical axis and whose image side is concave near the optical axis; and a third lens with positive optical power, whose object side is concave near the optical axis and whose image side is convex near the optical axis.

[0124] Let TTL represent the total optical length of imaging component 10, ImgH represent the maximum image height of imaging component 10, and EFL represent the effective focal length of imaging component 10. Let αi represent the i-th order aspherical coefficient, i = 4, 6, 8, 10, 12, 14, 16, and K represent the conic coefficient. Based on the above relationships, Table 5 shows the effective focal length EFL, maximum field of view FOV, total optical length TTL, aperture F-number F.No., surface type, radius of curvature, thickness, material refractive index, and conic coefficient of imaging component 10 in Embodiment 3. The units for radius of curvature and thickness are millimeters (mm), as shown in Table 5.

[0125] Table 5

[0126]

[0127] Table 6 shows the aspheric coefficients of the lighting projection component 100 in Embodiment 1 of this application, as shown in Table 6:

[0128] Face number A4 A6 A8 A10 A12 A14 A16 S1 1.140E-02 -7.099E-03 1.838E-03 -4.703E-04 8.220E-05 -1.547E-05 1.487E-06 S2 -1.041E-02 -6.321E-04 -2.245E-05 -1.374E-05 6.169E-06 -2.136E-06 2.611E-07 S3 1.109E-03 -7.089E-04 1.519E-04 1.548E-05 8.242E-06 -1.589E-07 -1.729E-07 S4 -6.735E-03 2.662E-03 -8.430E-04 1.663E-04 -1.265E-05 5.664E-07 -9.004E-09 S5 -8.689E-03 8.733E-04 1.641E-04 -1.063E-04 1.494E-05 -2.662E-08 -6.859E-08 S6 1.914E-02 -3.389E-04 -4.294E-06 -1.070E-04 5.699E-06 5.337E-06 -5.236E-08

[0129] Among them, the non-curved surfaces of each lens in the imaging assembly 10 satisfy:

[0130]

[0131] Where x is the distance vector from the vertex of the aspherical surface at a height of h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / r (i.e., the paraxial curvature c is the reciprocal of the radius of curvature r in Table 5 above); k is the conic constant (given in Table 5 above); Ai is the in-th order correction coefficient of the aspherical surface, and the higher-order coefficients A4, A6, A8, A10, A12, A14 and A16 of each lens surface S1-S6 are shown in Table 6.

[0132] It should be understood that the aspherical surfaces of each lens in the imaging assembly 10 may use the aspherical surface shown in the above-described aspherical surface formula, or may use other aspherical surface formulas, and this application does not limit them.

[0133] The above provides design data for the imaging component 10 of Embodiment 3 of this application, which has an effective focal length (EFL) of 7.019 mm, a maximum field of view (Fov) of 36.014°, a total optical length (TTL) of 9.990 mm, and an aperture (F.No.) of 2.114.

[0134] In one embodiment provided in this application, (tanSemi-Fov×ImgH) / f=0.116.

[0135] In one embodiment provided in this application, TTL / f = 1.423.

[0136] In one embodiment provided in this application, (f3-f2) / f1 = 2.206.

[0137] In one embodiment provided in this application, TTL / (CT1+CT2+CT3)=1.949.

[0138] In one embodiment provided in this application, R32 / f = 0.480.

[0139] In one embodiment provided in this application, (T12+T23) / (CT1+CT2+CT3)=0.318.

[0140] In one embodiment provided in this application, (DT32+DT31) / (SAG32+SAG31)=2.424.

[0141] See Figure 18 In embodiment 3, a light-transmitting pattern to be projected is formed on the image side of the film 18 by magnetron sputtering and photolithography. The image side of the film 18 is the object side S7 of the imaging component 10, and the pattern to be projected is tilted on the film. Figure 19 and Figure 20 The performance of the pattern projected by the lighting projection assembly of Example 3 is described. The lighting projection assembly of Example 3 projects a pattern with a length × width of 870mm × 409mm. Figures 21 to 24 The optical performance of the imaging component 10 is described, ensuring the clarity of the pattern projected by the illumination projection component.

[0142] Example 4

[0143] In Embodiment 4, STO represents the surface of the aperture stop, S1 represents the image side of the first lens 11, S2 represents the object side of the first lens 11, S3 represents the image side of the second lens 12, S4 represents the object side of the second lens 12, S5 represents the image side of the third lens 13, S6 represents the object side of the third lens 13, and S7 represents the object side of the imaging component.

[0144] Please see Figure 25 , Figure 25 The dashed line is used to represent the optical axis. The illumination projection assembly in this embodiment includes an illumination assembly for focusing light from a light source, an imaging assembly for adjusting the field of view of the light image, and a housing; the imaging assembly and the illumination assembly are sequentially installed within the housing from the object side to the image side; the imaging assembly sequentially includes, from the image side to the object side: a first lens with positive optical power, whose object side is convex near the optical axis and whose image side is convex near the optical axis; a second lens with negative optical power, whose object side is convex near the optical axis and whose image side is concave near the optical axis; and a third lens with positive optical power, whose object side is concave near the optical axis and whose image side is convex near the optical axis.

[0145] Let TTL represent the total optical length of imaging component 10, ImgH represent the maximum image height of imaging component 10, and EFL represent the effective focal length of imaging component 10. Let αi represent the i-th order aspherical coefficient, i = 4, 6, 8, 10, 12, 14, 16, and K represent the conic coefficient. Based on the above relationships, Table 7 shows the effective focal length EFL, maximum field of view FOV, total optical length TTL, aperture F-number F.No., surface type, radius of curvature, thickness, material refractive index, and conic coefficient of imaging component 10 in Embodiment 4. The units for radius of curvature and thickness are millimeters (mm), as shown in Table 7.

[0146] Table 7

[0147]

[0148] Table 8 shows the aspheric coefficients of the illumination projection component 100 of Embodiment 4 of this application, as shown in Table 8:

[0149] Face number A4 A6 A8 A10 A12 A14 A16 S1 1.588E-02 -1.023E-02 4.360E-03 -1.725E-03 4.657E-04 -8.267E-05 6.647E-06 S2 -1.157E-02 -9.590E-04 1.660E-04 -9.447E-05 3.394E-05 -6.459E-06 4.879E-07 S3 -1.449E-03 -1.493E-03 3.064E-04 -1.532E-05 1.998E-05 -3.791E-06 1.398E-07 S4 -1.322E-02 6.076E-03 -2.179E-03 5.068E-04 -7.007E-05 6.341E-06 -3.111E-07 S5 -1.555E-02 1.163E-03 6.393E-04 -3.298E-04 5.821E-05 -4.595E-06 1.512E-07 S6 1.123E-02 -4.546E-04 -1.954E-04 -2.371E-06 6.472E-06 -2.685E-06 4.733E-07

[0150] Among them, the non-curved surfaces of each lens in the imaging assembly 10 satisfy:

[0151]

[0152] Where x is the distance vector from the vertex of the aspherical surface at a height of h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / r (i.e., the paraxial curvature c is the reciprocal of the radius of curvature r in Table 7 above); k is the conic constant (given in Table 7 above); Ai is the in-th order correction coefficient of the aspherical surface, and the higher-order coefficients A4, A6, A8, A10, A12, A14 and A16 of each lens surface S1-S6 are shown in Table 8.

[0153] It should be understood that the aspherical surfaces of each lens in the imaging assembly 10 may use the aspherical surface shown in the above-described aspherical surface formula, or may use other aspherical surface formulas, and this application does not limit them.

[0154] The above provides design data for the imaging component 10 of Embodiment 4 of this application, which has an effective focal length (EFL) of 6.344 mm, a maximum field of view (Fov) of 41.016°, a total optical length (TTL) of 9.676 mm, and an aperture (F.No.) of 2.115.

[0155] In one embodiment provided in this application, (tanSemi-Fov×ImgH) / f=0.147.

[0156] In one embodiment provided in this application, TTL / f = 1.525.

[0157] In one embodiment provided in this application, (f3-f2) / f1 = 2.184.

[0158] In one embodiment provided in this application, TTL / (CT1+CT2+CT3)=1.774.

[0159] In one embodiment provided in this application, R32 / f = 0.564.

[0160] In one embodiment provided in this application, (T12+T23) / (CT1+CT2+CT3)=0.227.

[0161] In one embodiment provided in this application, (DT32+DT31) / (SAG32+SAG31)=2.759.

[0162] See Figure 26 In embodiment 4, a light-transmitting pattern to be projected is formed on the image side of the film 18 by magnetron sputtering and photolithography. The image side of the film 18 is the object side S7 of the imaging component 10, and the pattern to be projected is tilted on the film. Figure 27 and Figure 28The performance of the pattern projected by the illumination projection assembly of Example 4 is described. The illumination projection assembly of Example 4 projects a pattern with a length × width of 1040mm × 482mm. Figures 29 to 32 The optical performance of the imaging component 10 is described, ensuring the clarity of the pattern projected by the illumination projection component.

[0163] Example 5

[0164] In Embodiment 5, STO represents the surface of the aperture stop, S1 represents the image side of the first lens 11, S2 represents the object side of the first lens 11, S3 represents the image side of the second lens 12, S4 represents the object side of the second lens 12, S5 represents the image side of the third lens 13, S6 represents the object side of the third lens 13, and S7 represents the object side of the imaging component.

[0165] Please see Figure 33 , Figure 33 The dashed line is used to represent the optical axis. The illumination projection assembly in this embodiment includes an illumination assembly for focusing light from a light source, an imaging assembly for adjusting the field of view of the light image, and a housing; the imaging assembly and the illumination assembly are sequentially installed within the housing from the object side to the image side; the imaging assembly sequentially includes, from the image side to the object side: a first lens with positive optical power, whose object side is convex near the optical axis and whose image side is convex near the optical axis; a second lens with negative optical power, whose object side is convex near the optical axis and whose image side is concave near the optical axis; and a third lens with positive optical power, whose object side is concave near the optical axis and whose image side is convex near the optical axis.

[0166] Let TTL represent the total optical length of imaging component 10, ImgH represent the maximum image height of imaging component 10, and EFL represent the effective focal length of imaging component 10. Let αi represent the i-th order aspherical coefficient, i = 4, 6, 8, 10, 12, 14, 16, and K represent the conic coefficient. Based on the above relationships, Table 9 shows the effective focal length EFL, maximum field of view FOV, total optical length TTL, aperture F-number F.No., surface type, radius of curvature, thickness, material refractive index, and conic coefficient of imaging component 10 in Embodiment 5. The units for radius of curvature and thickness are millimeters (mm), as shown in Table 9.

[0167] Table 9

[0168]

[0169] Table 10 shows the aspheric coefficients of the illumination projection component 100 of Embodiment 5 of this application, as shown in Table 10:

[0170] Face number A4 A6 A8 A10 A12 A14 A16 S1 2.116E-02 -1.375E-02 7.685E-03 -3.770E-03 1.202E-03 -2.181E-04 1.666E-05 S2 -1.758E-02 1.841E-03 3.332E-05 -2.828E-04 9.866E-05 -1.401E-05 7.358E-07 S3 -6.831E-03 2.954E-03 -5.855E-04 -7.623E-05 6.710E-05 -1.070E-05 5.378E-07 S4 -1.959E-02 1.068E-02 -3.888E-03 1.044E-03 -1.820E-04 1.805E-05 -7.506E-07 S5 -1.078E-02 -3.606E-03 2.181E-03 -7.064E-04 1.295E-04 -1.289E-05 5.370E-07 S6 -1.789E-03 -1.364E-03 3.950E-04 -1.282E-04 2.495E-05 -2.583E-06 1.090E-07

[0171] Among them, the non-curved surfaces of each lens in the imaging assembly 10 satisfy:

[0172]

[0173] Where x is the distance vector from the vertex of the aspherical surface at a height of h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / r (i.e., the paraxial curvature c is the reciprocal of the radius of curvature r in Table 9 above); k is the conic constant (given in Table 9 above); Ai is the in-th order correction coefficient of the aspherical surface, and the higher-order coefficients A4, A6, A8, A10, A12, A14 and A16 of each lens surface S1-S6 are shown in Table 10.

[0174] It should be understood that the aspherical surfaces of each lens in the imaging assembly 10 may use the aspherical surface shown in the above-described aspherical surface formula, or may use other aspherical surface formulas, and this application does not limit them.

[0175] The above provides design data for the imaging component 10 of Embodiment 5 of this application, which has an effective focal length (EFL) of 5.968 mm, a maximum field of view (Fov) of 44.981°, a total optical length (TTL) of 9.611 mm, and an aperture (F.No.) of 2.118.

[0176] In one embodiment provided in this application, (tanSemi-Fov×ImgH) / f=0.174.

[0177] In one embodiment provided in this application, TTL / f = 1.610.

[0178] In one embodiment provided in this application, (f3-f2) / f1 = 5.388.

[0179] In one embodiment provided in this application, TTL / (CT1+CT2+CT3)=1.597.

[0180] In one embodiment provided in this application, R32 / f = 0.467.

[0181] In one embodiment provided in this application, (T12+T23) / (CT1+CT2+CT3)=0.179.

[0182] In one embodiment provided in this application, (DT32+DT31) / (SAG32+SAG31)=3.482.

[0183] See Figure 34 In embodiment 5, a light-transmitting pattern to be projected is formed on the image side of the film 18 by magnetron sputtering and photolithography. The image side of the film 18 is the object side S7 of the imaging component 10, and the pattern to be projected is tilted on the film. Figure 35 and Figure 36 The performance of the pattern projected by the illumination projection assembly of Example 5 is described. The illumination projection assembly of Example 5 projects a pattern with a length × width of 1286mm × 601mm. Figures 37 to 40 The optical performance of the imaging component 10 is described, ensuring the clarity of the pattern projected by the illumination projection component.

[0184] It should be noted that the pattern projected in the lighting projection component provided by the present invention is only exemplary. The projected pattern can be changed as needed and can be logos of various car brands, traffic signs, text, numbers, letters, etc.

[0185] This invention has been described by way of preferred embodiments. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. The invention is not limited to the specific embodiments disclosed herein; other embodiments falling within the scope of the claims are also within the protection scope of the invention.

Claims

1. An illumination-projection assembly comprising a housing, an illumination assembly for focusing light rays of a light source, and an imaging assembly for adjusting an imaging field angle of the light rays; the imaging assembly and the illumination assembly are sequentially installed in the housing from an object side to an image side; characterized in that, The imaging assembly comprises three lenses with optical power, and the imaging assembly includes, sequentially from the image side to the object side: The first lens with positive optical power has an image-side surface that is convex near the optical axis. The second lens with negative optical power has an image-side surface that is concave near the optical axis. A third lens with optical power has an object-side surface that is concave near the optical axis; The imaging component satisfies the following condition: 0.049<(tanSemi-Fov×ImgH) / f<0.174; -0.180 < (f3 - f2) / f1 < 5.388; 1.597 <TTL / (CT1+CT2+CT3)<2.401; Wherein, Semi-Fov is half of the maximum field of view of the imaging component, f is the total effective focal length of the imaging component, ImgH is the maximum image height on the object side of the imaging component; f1 is the effective focal length of the first lens, f2 is the effective focal length of the second lens, and f3 is the effective focal length of the third lens; TTL is the distance on the optical axis from the image side of the first lens to the object side of the imaging component, CT1 is the center thickness of the first lens on the optical axis, CT2 is the center thickness of the second lens on the optical axis, and CT3 is the center thickness of the third lens on the optical axis.

2. The illumination and projection assembly of claim 1, wherein, The imaging component satisfies the following condition: 1.032 <TTL / f<1.610; Where TTL is the distance on the optical axis from the image side of the first lens to the object side of the imaging assembly, and f is the total effective focal length of the imaging assembly.

3. The lighting projection assembly according to claim 1, characterized in that, The imaging component satisfies the following condition: 0.149 <R32 / f<0.564 ; Wherein, R32 is the radius of curvature of the side surface of the third lens, and f is the total effective focal length of the imaging assembly.

4. The lighting projection assembly according to claim 1 or 3, characterized in that, The imaging component satisfies the following condition: 0.057<(T12+T23) / (CT1+CT2+CT3)<0.318; Wherein, T12 is the air gap between the first lens and the second lens on the optical axis; T23 is the air gap between the second lens and the third lens on the optical axis; CT1 is the center thickness of the first lens on the optical axis; CT2 is the center thickness of the second lens on the optical axis; and CT3 is the center thickness of the third lens on the optical axis.

5. The lighting projection assembly according to claim 4, characterized in that, The imaging component satisfies the following condition: 2.424<(DT32+DT31) / (SAG32+SAG31)< 4.312; Wherein, DT31 is the maximum effective half-aperture of the image side of the third lens; DT32 is the maximum effective half-aperture of the object side of the third lens; SAG31 is the distance on the optical axis from the intersection of the image side of the third lens and the optical axis to the vertex of the effective radius of the image side of the third lens; SAG32 is the distance on the optical axis from the intersection of the object side of the third lens and the optical axis to the vertex of the effective radius of the object side of the third lens.

6. The lighting projection assembly according to claim 1, characterized in that: The lighting assembly includes a fourth lens and a fifth lens; The fourth lens and the fifth lens are installed sequentially from the object side to the image side inside the housing, with the fifth lens located on the object side of the fourth lens.

7. The lighting projection assembly according to claim 1, characterized in that: The end of the outer casing has an edge integrally formed with the end.

8. A welcome light, characterized in that, Includes the lighting projection assembly as described in any one of claims 1 to 7.

Images