TWI819774B - Vehicle projection lens - Google Patents

Abstract

A vehicle projection lens includes a concave reflective mirror, a front lens group and a rear lens group arranged in order from an image side to an object side. The front lens group includes a first lens and a second lens, and the rear lens group includes a third lens, a fourth lens, a fifth lens and a sixth lens in order from the image side to the object side. A ratio of a distance between the concave reflective mirror and the first lens along the optical axis to an overall length of the vehicle projection lens is 0.02-0.45, and a maximum semi-FOV of the vehicle projection lens is 80-85 degrees.

Description

Car projection lens

The invention relates to a vehicle projection lens.

Generally speaking, if you want to project a large-sized image at a short projection distance, a special wide-angle lens including a reflector is often used to reduce the required projection distance. However, in the current design, in order to effectively reduce lens distortion and chromatic aberration, a larger number of lens elements is often needed to correct the aforementioned errors. However, the added lens has the problem of excessive size and high cost. Therefore, how to balance the size, cost and optical effect of the lens is one of the directions that this field needs to work on.

Other objects and advantages of the present invention can be further understood from the technical features disclosed in the embodiments of the present invention.

One embodiment of the present invention provides a vehicle projection lens, including a concave reflector arranged in sequence from the image side to the object side of the vehicle projection lens, a front group mirror group and a rear group mirror group, and the front group mirror group and the rear group mirror group. Groups are separated by the aperture of the automotive projection lens, and the total number of lenses in the front group lens group and the rear group lens group is less than 10 elements. The front lens group includes a first lens and a second lens arranged in sequence from the image side to the object side, and at least one of the first lens and the second lens is an aspherical lens with negative lens refractive power. The rear group lens group includes a third lens, a fourth lens, a fifth lens and a sixth lens arranged in sequence from the image side to the object side, and they are all glass lenses. The distance between the concave reflector and the aspherical first lens on the optical axis, divided by the total length of the lens, is between 0.02-0.45, and the maximum semi-FOV of the automotive projection lens is between 80- 85 degrees. Through the design of this embodiment, a larger projection angle and a more compact projection optical system can be provided.

Another embodiment of the present invention provides a vehicle projection lens, including a concave reflector, a first lens, a second lens, a third lens, a fourth lens, a fifth lens arranged in one direction. Lens and sixth lens. At least one of the first lens and the second lens is an aspherical lens with negative lens refractive power. The third lens and the fourth lens are combination lenses, and the fifth lens and the sixth lens are glass lenses. The total number of lenses of the automotive projection lens is less than 10. The distance between the concave reflector and the aspherical first lens on the optical axis, divided by the total length of the lens, is between 0.02-0.45, and the maximum half field of view of the automotive projection lens is The angle is between 80-85 degrees. Through the design of this embodiment, a larger projection angle and a shorter projection optical system size can be provided.

Through the design of various embodiments of the present invention, a vehicle projection lens can be provided that has at least one of the advantages of light weight, low cost, wide viewing angle, larger projection angle, and shorter system size.

In order to make the above-mentioned features and advantages of the present invention more obvious and easy to understand, embodiments are given below and described in detail with reference to the accompanying drawings.

10:Car projection device

12: Optical axis

20:Light source

30:Light valve

40:稜顡

50:Glass cover

100, 100a, 100b, 100c, 100d: automotive projection lens

110:Concave reflector

120: Front group lens group

130:Rear group lens group

140:aperture

150, 152: Plane reflector

L1-L9: Lens

S1-S24: Surface

IS: image side

OS: object side

TL: total lens length

FIG. 1 is a schematic diagram of a vehicle projection device according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of the optical structure of a vehicle projection lens according to an embodiment of the present invention.

FIG. 3 is a schematic diagram of the optical structure of a vehicle projection lens according to another embodiment of the present invention.

FIG. 4 is a schematic diagram of the optical structure of a vehicle projection lens according to another embodiment of the present invention.

FIG. 5 is a schematic diagram of the optical structure of a vehicle projection lens according to another embodiment of the present invention.

FIG. 6 is a schematic diagram of the optical structure of a vehicle projection lens according to another embodiment of the present invention.

The terms "first" and "second" used in the following embodiments are for the purpose of identifying the same or similar technical contents, features and functions mentioned above in the present invention. In the following detailed description of the embodiments with reference to the drawings, , will be clearly displayed. Directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, etc., are only for reference to the directions in the attached drawings. Accordingly, the directional terms used are illustrative and not limiting of the invention. In order to demonstrate the characteristics of this embodiment, only the structures related to this embodiment are shown, and the other structures are omitted.

The so-called lens in the present invention refers to an element that is made of a partially or fully penetrable material and has diopter, usually composed of glass or plastic. Can contain general lenses (lens), cylindrical lens, biconical lens, cylindrical array lens, wedge lens, wedge or a combination of the aforementioned elements.

When a lens is used in a projection system, the image side refers to the side of the optical path close to the imaging surface (such as a screen), and the object side refers to the side of the optical path close to the light source or light valve.

The object side (or image side) of a lens has a convex surface (or concave surface) located in a certain area, which means that the area is more "parallel to the optical axis 12" than the outer area immediately adjacent to the area in the radial direction. "Protruding outward" (or "concave inward").

FIG. 1 is a schematic diagram of a vehicle projection device according to an embodiment of the present invention. Please refer to FIG. 1 . In this embodiment, the vehicle projection device 10 includes a light source 20 , a light valve 30 and a projection lens 100 . The light source 20 is used to provide light of different wavelengths as a source of image light, and the light valve 30 is used to convert the illumination light of different wavelengths into image light. The light valve 30 can be, for example, a reflective light modulator such as a Liquid Crystal On Silicon panel (LCoS panel) or a Digital Micro-mirror Device (DMD). The light valve 30 can also be a light-transmitting light modulator. Liquid crystal panel (Transparent Liquid Crystal Panel), electro-optical modulator (Electro-Optical Modulator), magneto-optic modulator (Magneto-Optic modulator), acousto-optic modulator (Acousto-Optic Modulator, AOM) and other penetrating light modulator. In various embodiments of the present invention, the types and types of the light source 20 and the light valve 30 are not limited. The projection lens 100 is used to project and image the image light onto the projection surface of a target. The projection lens 100 includes, for example, a combination of multiple lenses with diopter. In some embodiments, in addition to components such as lenses and apertures, a flat reflector or a curved reflector can also be selectively added between each lens in the projection lens 100 and other components to reflect and turn the optical path of the light beam, and project the image light from the light valve 30 to the projection target. In this embodiment, the vehicle projection device 10 further includes components such as a housing 40 and a glass cover 50 . The glass cover 50 is used to protect the light valve 30 from dust, and the lens 40 is used to adjust the light path of light of different wavelengths. In this example, the light valve 30 is located downstream of the light path of the light source 20 , and the projection lens 100 is located above the light valve 30 Downstream of the optical path, the light valve 30 converts the light beam into an image beam with image information. The image beam can then pass through the glass cover 50 and the lens 40 to the projection lens 100 in sequence. Finally, the image beam is projected by the projection lens 100 and imaged on the vehicle. The projection surface outside the projection device 100 .

FIG. 2 is a schematic diagram of the optical structure of a fixed-focus projection lens for vehicles according to the first embodiment of the present invention. Please refer to Figure 2. In this embodiment, along the optical axis 12 of the automotive projection lens 100a, the concave reflector 110, the front lens group 120, and the aperture (minimum clear aperture) are sequentially arranged from the image side IS to the object side OS. 140. Rear group lens group 130, in which the object side OS is the light input side of the projection lens 100a corresponding to the light valve 30, and the image side IS is the light output side of the projection lens 100a corresponding to the screen. Furthermore, the lens 40 , the glass cover 50 and the light valve 30 are arranged in order from the image side IS to the object side OS. In this embodiment, the concave reflector 110 has an aspherical surface, and the concave reflector 110 is axially symmetrical with respect to the optical axis 12 of the projection lens 100a, but the invention is not limited thereto. In another embodiment, as shown in FIG. 6 , at least one plane mirror (for example, two plane mirrors 150 and 152 ) can be provided in the optical path between the concave mirror 110 and the lens to bend the optical path, so that the concave reflection The optical center of the mirror 110 is not on the line connecting the optical centers of the lens closest to the image side IS and the lens closest to the object side OS.

Please refer to FIG. 2 again. In this embodiment, the front lens group 120 includes lenses L1 and L2 arranged in sequence from the image side IS to the object side OS. The rear group lens group 130 includes lenses from the image side IS to the object side OS. Lens L3, lens L4, lens L5 and lens L6 are arranged in sequence, and the front group lens group 120 and the rear group lens group 130 are separated by the aperture 140 of the automotive projection lens 100a. In this embodiment, the aperture (minimum clear aperture) 140 is provided between the lens L2 and the lens L3. In this embodiment, the refractive power of the front lens group 120 is negative, the refractive power of the rear lens group 130 is positive, and the refractive powers of lenses L1-L6 are negative, positive, negative, positive, positive, and positive respectively. In this embodiment, lens L3 and lens L4 can form a combined lens, that is, the adjacent surfaces of lens L3 and lens L4 have approximately the same (the difference in curvature radius is less than 0.005mm) or the same (substantially the same) curvature radius. Lenses L1, L2, and L6 are aspherical lenses. Lenses L1 and L2 can be plastic lenses. The material of the plastic lenses can be, for example, PMMA or PC but is not limited thereto. Lenses L3-L5 can be spherical glass lenses, and lens L6 can be molded. Glass lens. Furthermore, the number of lenses, the shape and optical characteristics of the lenses in the projection lens 100a can be designed differently according to actual needs. The image-side IS in each specific embodiment of the present invention is located on the right side of each figure, and the object-side OS is located on the left side of each figure. The description will not be repeated. In this embodiment, the projection lens 100a may be a fixed focus lens.

The aperture 140 referred to in the present invention refers to an aperture stop (Aperture Stop). The aperture 140 is, for example, an independent component. However, the present invention is not limited thereto. The aperture 140 can also be integrated with other optical components. In this embodiment, the aperture 140 achieves a similar effect by using a mechanical component to block peripheral light and leave the middle part of the light transmitting, and the aforementioned so-called mechanical component may be adjustable. The so-called adjustable refers to the adjustment of the position, shape or transparency of the mechanical components. Alternatively, the aperture 140 can also be coated with an opaque light-absorbing material on the surface of the lens, leaving the central part transparent to achieve the effect of limiting the light path. When the aperture of the aperture 140 is larger, the automotive fixed-focus projection lens can correspond to a smaller aperture value (F-number).

A spherical lens means that the front and back surfaces of the lens are parts of the spherical surface, and the curvature of the spherical surface is fixed. The lens design parameters and appearance of the automotive projection lens 100a are shown in Table 1 respectively. However, the information listed below is not intended to limit the present invention. Anyone with ordinary knowledge in the art can make appropriate changes to the parameters or settings after referring to the present invention, but they should still fall within the scope of the present invention. .

Table 1 records the values of the optical parameters of each lens in the optical system. The * in the surface number indicates that the surface is an aspherical surface; conversely, if there is no * in the surface number, it is a spherical surface. The units of curvature radius and spacing/thickness in Table 1 are millimeters (mm). Furthermore, it should be noted that in each embodiment of this specification, the distance value is defined with the concave reflector 110 as the origin and the direction toward the object side OS as negative. Therefore, for example, the spacing value in the table and the subsequent total lens length value are negative. value.

In Table 1, the radius of curvature (mm) refers to the radius of curvature of the corresponding surface, and the distance (mm) refers to the straight-line distance between two adjacent surfaces on the optical axis 12. For example, the distance between surfaces S1 is the distance between surface S1 and surface S2. For the thickness, refractive index and Abbe number corresponding to each lens and each optical element in the column, please refer to the distance, refractive index and Abbe number in the same column. The numerical value corresponding to the number. Surfaces S2 and S3 are both surfaces of lens L1. Surfaces S4 and S5 are both surfaces of lens L2. For parameter values such as the radius of curvature and spacing of each surface, please refer to Table 1, which will not be repeated here.

Radius of curvature refers to the reciprocal of curvature. When the radius of curvature is positive, the spherical center of the lens surface is in the direction of the magnification side (image side) of the lens. When the radius of curvature is negative, the spherical center of the lens surface is in the direction of the reduction side (object side) of the lens, and the convexity and concavity of each lens can be seen in the table above.

The aperture value of this embodiment is represented by F/# (F-number). According to the design of the specific embodiment of the present invention, the aperture value (F-number) of the automotive fixed-focus projection lens can be between 2.2-2.7, which is relatively Preferably, it is 2.3-2.6, and more preferably, it is 2.4-2.5. In this embodiment, the aperture of the vehicle fixed-focus projection lens 100a The value (F-number) is 2.44. Furthermore, according to the design of specific embodiments of the present invention, the throw ratio (projection object distance/projection screen width) of the vehicle fixed-focus projection lens can be between 0.13-0.2, preferably 0.14-0.19, and more preferably 0.15- 0.18. In various embodiments of the present invention, the distance on the optical axis 12 between the concave reflector 110 and the lens (lens L1) closest to the concave reflector 110 divided by the total lens length TL can range from 0.02 to 0.45. Meeting this ratio range can provide a larger projection angle and a more compact projection optical system, and can provide a good viewing angle range. The total lens length TL can be marked as shown in Figure 2 and refers to the distance from the outer surface of the concave reflector 110 on the optical axis 12 to the outermost surface (surface S13) of the rear group lens group 130 on the optical axis 12. In this embodiment, the total length of the lens TL is -82.1 mm, and the distance between the concave reflector 110 and the aspherical lens L1 on the optical axis 12 divided by the total length of the lens is 0.375. Furthermore, in this embodiment, the distance between the aspherical lens L1 and the aspherical lens L2 on the optical axis 12 divided by the total lens length TL is between 0.1-0.38, preferably 0.12-0.35, and more preferably 0.14-0.32. Meeting this ratio range can effectively shorten the size of the projection optical system and provide a good viewing angle range. In this embodiment, the distance between the aspherical lens L1 and the aspherical lens L2 on the optical axis 12 divided by the total lens length TL is 0.268.

In various embodiments of the present invention, the maximum semi-FOV of the vehicle projection lens is between 80-85 degrees. In this embodiment, the maximum half field angle of the vehicle fixed-focus projection lens 100a is 80 degrees, and the effective focal length value of the vehicle fixed-focus projection lens 100a is 1.09 mm.

上述的公式中，Z為光軸12方向之偏移量(sag)，c是密切球面(osculating sphere)的半徑之倒數，也就是接近光軸12處的曲率半徑的倒數，k是圓錐 係數(conic coefficient)，r是非球面高度，即為從透鏡中心往透鏡邊緣的高度。表二的A-F分別代表非球面多項式的4階項、6階項、8階項、10階項、12階項、14階項係數值。然而，下文中所列舉的資料並非用以限定本發明，任何所屬領域中具有通常知識者在參照本發明之後，當可對其參數或設定作適當的更動，惟其仍應屬於本發明的範疇內。 A spherical lens means that the front and back surfaces of the lens are parts of the spherical surface, and the curvature of the spherical surface is fixed. Aspheric lenses refer to the curvature radius of at least one of the front and rear surfaces of the lens that changes with the central axis, which can be used to correct aberrations. In the following design examples of the present invention, the aspheric polynomial can be expressed by the following formula:

In the above formula, Z is the offset (sag) in the direction of optical axis 12, c is the reciprocal of the radius of the osculating sphere, that is, the reciprocal of the radius of curvature close to optical axis 12, and k is the cone coefficient ( conic coefficient), r is the aspherical height, which is the height from the center of the lens to the edge of the lens. The AF in Table 2 respectively represent the coefficient values of the 4th-order, 6th-order, 8th-order, 10th-order, 12th-order and 14th-order terms of the aspheric polynomial. However, the information listed below is not intended to limit the present invention. Anyone with ordinary knowledge in the art can make appropriate changes to the parameters or settings after referring to the present invention, but they should still fall within the scope of the present invention. .

In various embodiments of the present invention, the total number of lenses with diopter power in the lens is less than 10, but the number of lenses, the shape of the lenses, and the optical characteristics can be designed differently according to actual needs and are not limited. For example, in one embodiment, a mechanical component can be used to stack two adjacent single lenses with substantially the same radius of curvature together to replace a lens with a larger thickness, and the two single lenses can be stacked separately. It has high Abbe number and low Abbe number to provide the effect of correcting chromatic aberration, making the lens resolution better.

FIG. 3 is an optical structural diagram of an optical lens 100b according to the second embodiment of the present invention. In this embodiment, the front lens group 120 includes lenses L1, L2, and L3 arranged in sequence from the image side IS to the object side OS, and the rear group lens group 130 includes lenses L4, lens L5, lens L6, and lens L7. . In this embodiment, the aperture 140 is provided between the lens L3 and the lens L4. In this embodiment, the refractive power of the front lens group 120 is negative, the refractive power of the rear lens group 130 is positive, and the refractive powers of lenses L1-L7 are negative, positive, negative, negative, positive, negative, and positive respectively. Lens L4 and lens L5 can form a combined lens, lenses L1, L2, and L7 are aspherical lenses, lenses L1 and L2 can be plastic lenses, lenses L3-L6 can be spherical glass lenses, and lens L7 can be a molded glass lens. In this embodiment, the total length TL of the lens is -82.1mm, and the concave reflector 110 and the concave reflector 110 are closest to the concave reflector 110 . The distance between the aspheric lens (lens L1) on the optical axis 12 divided by the total lens length TL is 0.401, and the distance between the aspheric lens L1 and the aspheric lens L2 on the optical axis 12 divided by the total lens length TL is 0.222, the effective focal length EFL is 0.95mm, the aperture value (F-number) is 2.46, and the maximum half field of view is 81.6 degrees. The design parameters of the lens and its surrounding components of the optical lens 100b are shown in Table 3, and the cone coefficients and aspherical coefficients of each aspheric surface are shown in Table 4.

FIG. 4 is an optical structural diagram of an optical lens 100c according to the third embodiment of the present invention. In this embodiment, the front lens group 120 includes lenses L1, L2, L3, and L4 arranged in sequence from the image side IS to the object side OS, and the rear group lens group 130 includes lenses L5, L6, and L7. and lens L8. In this embodiment, the aperture 140 is provided between the lens L4 and the lens L5. In this embodiment, the refractive power of the front lens group 120 is positive, the refractive power of the rear lens group 130 is positive, and the refractive powers of the lenses L1-L8 are negative, positive, positive, negative, negative, positive, positive, and positive respectively. . Lens L5 and lens L6 can form a combined lens, lenses L1 and L2 can be aspheric lenses, lenses L1 and L2 can be plastic lenses, and lenses L3-L8 can be spherical glass lenses. In this embodiment, the total lens length TL is -97.63mm. The distance between the concave reflector 110 and the lens (lens L1) closest to the concave reflector 110 on the optical axis 12 divided by the total lens length TL is 0.2766. The aspheric surface The distance between lens L1 and aspherical lens L2 on the optical axis 12 divided by the total lens length TL is 0.3138, the effective focal length EFL is 1.06mm, the aperture value (F-number) is 2.44, and the maximum half field of view is 81.5 degrees. . The design parameters of the lens and peripheral components of the optical lens 100c are shown in Table 5, and the cone coefficients and aspherical coefficients of each aspheric surface are shown in Table 6.

Table 5

Table 6

FIG. 5 is an optical structural diagram of an optical lens 100d according to the fourth embodiment of the present invention. In this embodiment, the front lens group 120 includes lenses L1, L2, L3, and L4 arranged in sequence from the image side IS to the object side OS, and the rear group lens group 130 includes lenses L5, L6, and L7. , lens L8 and lens L9. In this embodiment, the aperture 140 is provided between the lens L4 and the lens L5. In this embodiment, the refractive power of the front lens group 120 is positive, the refractive power of the rear lens group 130 is positive, and the refractive powers of the lenses L1-L9 are negative, positive, positive, negative, negative, positive, positive, and positive respectively. ,just. Lens L5 and lens L6 can form a combined lens, lenses L1 and L2 can be aspheric lenses, lenses L1 and L2 can be plastic lenses, and lenses L3-L9 can be spherical glass lenses. In this embodiment, the total lens length TL is -97.73mm. The distance between the concave reflector 110 and the lens (lens L1) closest to the concave reflector 110 on the optical axis 12 divided by the total lens length TL is 0.276. The aspheric surface The distance between lens L1 and aspherical lens L2 on the optical axis 12 divided by the total lens length TL is 0.313, the effective focal length EFL is 1.06mm, the aperture value (F-number) is 2.44, and the maximum half field of view is 81.5 degrees . The design parameters of the lens and peripheral components of the optical lens 100d are shown in Table 7, and the cone coefficients and aspherical coefficients of each aspheric surface are shown in Table 8.

Embodiments of the present invention can provide lower manufacturing costs and overall weight while still maintaining appropriate imaging quality by using aspherical plastic lenses and the optical lens is composed of substantially less than 10 lenses. Through the design of various embodiments of the present invention, a vehicle projection lens can be provided that has at least one of the advantages of light weight, low cost, wide viewing angle, larger projection angle, and shorter system size.

Although the present invention has been disclosed above through embodiments, they are not intended to limit the present invention. Anyone with ordinary knowledge in the technical field may make some modifications and modifications without departing from the spirit and scope of the present invention. Therefore, The protection scope of the present invention shall be determined by the appended patent application scope.

12: Optical axis

30:Light valve

40:稜顡

50:Glass cover

100a: Automotive projection lens

110:Concave reflector

120: Front group lens group

130:Rear group lens group

140:aperture

L1-L6: Lens

S1-S18: Surface

IS: image side

OS: object side

TL: total lens length

Claims (10)

A vehicle projection lens, including: a concave reflector, a front lens group and a rear lens group arranged in sequence from the image side to the object side of the vehicle projection lens, and the front lens group and the rear group The lens group is separated by the aperture of the vehicle projection lens, and the total number of lenses in the front group lens group and the rear group lens group is less than 10; the front group lens group includes from the image side to the object side A first lens and a second lens arranged in sequence, and at least one of the first lens and the second lens is an aspherical lens with negative lens refractive power; the rear group lens group includes from the image side The third lens, the fourth lens, the fifth lens and the sixth lens arranged sequentially to the object side are all glass lenses; and the distance on the optical axis between the concave reflector and the aspherical first lens is divided by The total length of the lens is between 0.02-0.45, and the maximum semi-FOV of the automotive projection lens is between 80-85 degrees. A projection lens for a vehicle, including: a concave reflector, a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens arranged in one direction; the first lens and the second lens At least one of the lenses is an aspherical lens with negative lens diopter; the third lens and the fourth lens are combination lenses; the fifth lens and the sixth lens are glass lenses; the total number of lenses of the automotive projection lens Less than 10 pieces; and the distance on the optical axis between the concave reflector and the aspherical first lens, divided by the total length of the lens, is between 0.02-0.45, and the maximum half field of view of the automotive projection lens The field angle is between 80-85 degrees. The vehicle projection lens according to claim 1 or 2 further includes two plane reflectors, which are disposed on the optical path from the concave reflector to the sixth lens. The vehicle projection lens as described in claim 1 or 2, wherein the vehicle projection lens has a throw ratio (Through Ratio) between 0.13-0.2. The vehicle projection lens as described in claim 1 or 2, wherein the distance on the optical axis between the first aspherical lens and the second aspherical lens, divided by the total length of the lens, is 0.1-0.38. The vehicle projection lens according to claim 1 or 2, wherein the sixth lens is an aspherical lens. The vehicle projection lens according to claim 1 or 2 further includes a seventh lens disposed between the second lens and the aperture. The automotive projection lens as described in claim 1 or 2, wherein the aperture value (F-number) of the automotive fixed-focus projection lens is between 2.2-2.7. The vehicle projection lens as described in claim 1 or 2, wherein the vehicle projection lens meets one of the following conditions: (1) the vehicle projection lens has six lenses arranged along one direction, and the lenses along that direction The diopters are negative, positive, negative, positive, positive, and positive in order. (2) The vehicle projection lens has seven lenses arranged along one direction, and the lens diopters along this direction are negative, positive, and positive in order. Negative, negative, positive, negative, positive, (3) The vehicle projection lens has eight lenses arranged along one direction, and the lens diopters along that direction are negative, positive, positive, negative, negative, positive in order. , positive, positive, (4) The vehicle projection lens has nine lenses arranged along one direction, and the lens diopters along that direction are negative, positive, positive, negative, negative, positive, positive, positive, respectively. just. The vehicle projection lens as described in claim 1 or 2, wherein the vehicle projection lens satisfies one of the following conditions: (1) The vehicle projection lens has aspherical lenses, aspherical lenses, crescent lenses, and aspherical lenses arranged in one direction. Lens, lenticular lens, crescent lens, aspherical lens, (2) this car projection The lens has aspheric lenses, aspheric lenses, crescent lenses, crescent lenses, lenticular lenses, crescent lenses, and aspheric lenses arranged in one direction. (3) The vehicle projection lens has aspheric lenses arranged in one direction. Lens, aspherical lens, biconvex lens, biconcave lens, biconcave lens, biconvex lens, crescent lens, crescent lens, (4) The vehicle projection lens has aspherical lenses, aspherical lenses, biconvex lenses arranged in one direction , biconcave lens, biconcave lens, planoconvex lens, planoconvex lens, crescent lens, crescent lens.

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