WO2021196489A1 - 一种车载的小型投影灯系统 - Google Patents

一种车载的小型投影灯系统 Download PDF

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Publication number
WO2021196489A1
WO2021196489A1 PCT/CN2020/107966 CN2020107966W WO2021196489A1 WO 2021196489 A1 WO2021196489 A1 WO 2021196489A1 CN 2020107966 W CN2020107966 W CN 2020107966W WO 2021196489 A1 WO2021196489 A1 WO 2021196489A1
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Prior art keywords
curved reflector
vehicle
projection lamp
lamp system
module
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PCT/CN2020/107966
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English (en)
French (fr)
Inventor
江程
佘俊
南基学
Original Assignee
广东烨嘉光电科技股份有限公司
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Application filed by 广东烨嘉光电科技股份有限公司 filed Critical 广东烨嘉光电科技股份有限公司
Publication of WO2021196489A1 publication Critical patent/WO2021196489A1/zh
Priority to US17/899,733 priority Critical patent/US11708021B2/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • F21S43/31—Optical layout thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/24—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments for lighting other areas than only the way ahead
    • B60Q1/247—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments for lighting other areas than only the way ahead for illuminating the close surroundings of the vehicle, e.g. to facilitate entry or exit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2400/00—Special features or arrangements of exterior signal lamps for vehicles
    • B60Q2400/40—Welcome lights, i.e. specific or existing exterior lamps to assist leaving or approaching the vehicle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F21W2103/60—Projection of signs from lighting devices, e.g. symbols or information being projected onto the road
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles

Definitions

  • the invention relates to a projection lamp system, and specifically discloses a vehicle-mounted small projection lamp system.
  • Vehicle-mounted projection lights are generally set on the outside of the car body, which can be used as a welcome function or logo light, and can also be set in the front or back of the car to warn pedestrians or vehicles, and have a certain decorative effect.
  • the projection lamp generally includes a coaxially arranged light source, a collimator lens, a film sheet, and a projection lens group.
  • the axial size of the entire projection lamp system is large, and the projection lamp is mostly set in the rear view of the car.
  • the projection lamp When setting the projection lamp to illuminate the ground vertically to form a clear image in the mirror, the bottom of the car door or the car pedal, etc., it is necessary to set the optical axis of the projection lamp perpendicular to the ground, which requires a large vertical dimension space. Structures such as rearview mirrors and car pedals do not have enough vertical dimension space. Projection lamps that are forced to shrink will result in poor efficiency and performance, and affect the brightness, clarity and fidelity of the final projected pattern.
  • the present invention discloses a vehicle-mounted small projection lamp system, including an illumination module and an imaging module.
  • the illumination module includes a light source, a collimator lens, and a film sheet arranged in sequence;
  • the imaging module includes a curved reflector and a first
  • the curved reflector is a concave reflector with positive optical power, the main optical axis of the illumination module passes through the reflecting surface of the curved reflector, and the first imaging lens is located on one side of the reflecting surface of the curved reflector.
  • the reflecting surface of the curved reflector is a rotationally symmetrical aspheric surface or a free-form surface.
  • the normal line of the curved reflector and the main optical axis of the lighting module form an angle ⁇ , 30° ⁇ 60°.
  • the effective aperture of the curved reflector is P
  • the effective aperture of the film is Q
  • the equivalent focal length of the imaging module is f
  • the effective aperture of the curved reflector satisfies:
  • the focal length of the curved reflector is F, F>f.
  • the first imaging lens is a convex lens.
  • the first imaging lens is located on a side of the reflective surface of the curved reflector close to the illumination module.
  • the first imaging lens is located on a side of the reflective surface of the curved reflector away from the illumination module.
  • the imaging module further includes a second imaging lens, and the second imaging lens is located between the first imaging lens and the curved reflector.
  • the second imaging lens is a concave lens.
  • the present invention discloses a vehicle-mounted small projection lamp system, which realizes deflection adjustment of the light path through a curved reflector, can ensure that the size of the one-way dimension will not be too large, and is not easily affected by the installed car structure during installation design.
  • the curved reflector has a positive optical power, which can achieve good focusing, which can not only ensure a good projection effect, but also reduce the number of positive power lenses in the projection lamp system, which is effective Reduce the volume and weight of the projection lamp system, which is conducive to vehicle installation and use.
  • Figure 1 is a schematic diagram of the imaging light path of a traditional projection lamp system.
  • Fig. 2 is a schematic structural diagram of Embodiment 1 of the present invention.
  • Fig. 3 is a schematic structural diagram of Embodiment 2 of the present invention.
  • Figure 4 is a schematic structural diagram of Embodiment 3 of the present invention.
  • Fig. 5 is a schematic diagram of the optical path and the projection spot according to the first embodiment of the present invention.
  • Fig. 6 is a schematic diagram of the optical path and the projection spot according to the second embodiment of the present invention.
  • Fig. 7 is a schematic diagram of the optical path and the projection spot of the third embodiment of the present invention.
  • the reference signs are: illumination module 10, light source 11, collimator lens 12, film sheet 13, imaging module 20, curved reflector 21, first imaging lens 22, and second imaging lens 23.
  • the embodiment of the present invention discloses a vehicle-mounted small projection lamp system, including an illumination module 10 and an imaging module 20.
  • the illumination module 10 intersects the main optical axis of the imaging module 20, and the illumination module 10 includes light sources 11, The collimating lens 12 and the film 13, the film 13 can also be other projection sources;
  • the imaging module 20 includes a curved reflector 21 and a first imaging lens 22.
  • the curved reflector 21 is a concave reflector with a positive refractive power.
  • the concave reflector with positive optical power can effectively reduce the lens structure with positive optical power required in the traditional projection lamp system.
  • the curved reflector 21 has no chromatic aberration and can effectively improve the color performance of the final projection spot.
  • the lighting module 10 The main optical axis passes through the reflective surface of the curved reflector 21, the illumination module 10 is located on the side of the reflective surface of the curved reflector 21, and the first imaging lens 22 is located on the side of the reflective surface of the curved reflector 21, that is, the first imaging lens 22 is located on the main optical axis of incident light or the main optical axis of reflected light of the reflecting surface of the curved reflector 21.
  • the light from the light source 11 reaches the film 13 after being converged and collimated by the collimator lens 12.
  • the light passes through the film 13 to obtain light that can form a specific pattern.
  • the light is directed to the reflecting surface of the curved reflector 21.
  • the reflector 21 converges and reflects incident light with a specific pattern, and adjusts the first imaging lens 22 on the incident light side or the emergent light side of the curved reflector 21 to finally form a projection spot with low chromatic aberration.
  • This projection lamp system shortens the axial light path by deflecting the light path, which can effectively reduce the required one-way dimension space, is less restricted by the installation space, and is more convenient for vehicle use.
  • the curved reflector 21 of the present invention When installed in the door, it can facilitate the door space Arrangement design; different from the use of flat mirrors to achieve light path deflection projection lamp system, the curved reflector 21 of the present invention also has a positive optical power, can effectively reduce the use of positive focal lens, thereby effectively reducing the volume of the projector lamp system , Can also effectively reduce the weight, and the overall structure is more concise than the existing projection lamp.
  • the reflective surface of the curved reflector 21 is a rotationally symmetrical aspheric surface or a free-form surface.
  • the normal at the center of the curved reflector 21 and the main optical axis of the lighting module 10 form an angle ⁇ , 30° ⁇ 60°, and the light from the lighting module 10 is directed to the light of the curved reflector 21
  • the angle between the incident light and the normal is ⁇
  • the angle between the output light and the normal is also ⁇ .
  • the intersection of the normal of the curved reflector 21 and the main optical axis of the illumination module 10 is reflected on the curved surface.
  • the reflective surface of the curved reflector 21 can effectively improve the reflection effect of the curved reflector 21 to ensure that the reflected image is not easily deformed, and at the same time, the size of the curved reflector 21 can be minimized.
  • the effective aperture of the curved reflector 21 is P
  • the effective aperture of the film 13 is Q
  • the equivalent focal length of the imaging module 20 is f
  • the effective aperture of the curved reflector 21 satisfies: It is ensured that the curved reflector 21 can completely receive the light that can form a specific pattern from the lighting module 10, so as to prevent the final projection spot pattern from being incomplete, and at the same time, it can effectively prevent the curved reflector 21 from being too large and affecting installation and use.
  • the equivalent focal length of the imaging module 20 is f
  • the focal length of the curved reflector 21 is F, F>f, which can effectively ensure that the volume of the imaging module 20 is not too large, and the imaging effect is guaranteed.
  • the first imaging lens 22 is a convex lens with positive refractive power.
  • the imaging module 20 is further improved, and the solutions of the following embodiments 1 to 3 are obtained.
  • the first imaging lens 22 is located on the reflective surface of the curved reflector 21 close to the illumination module 10
  • the main optical axis of the curved reflector 21 passes through the center of the first imaging lens 22, and the structure is simple, that is, the main optical axis of the illumination module 10 passes through the first imaging lens 22, and the F number of the imaging module 20 is Refers to the size of the caliber.
  • the first imaging lens 22 is located on the side of the curved reflector 21 away from the illumination module 10, and the main optical axis of the curved reflector 21 passes through the first imaging lens 22. Center setting.
  • the imaging module 20 further includes a second imaging lens 23, which is located between the first imaging lens 22 and the curved reflector 21, and the lens included in the imaging module 20
  • the number does not exceed 3.
  • the second imaging lens 23 is a concave lens with negative refractive power. The concave lens can effectively eliminate chromatic aberration, thereby effectively improving the imaging quality.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lenses (AREA)

Abstract

一种车载的小型投影灯系统，包括照明模块(10)和成像模块(20)，照明模块(10)包括依次设置的光源(11)、准直透镜(12)和菲林片(13)；成像模块(20)包括曲面反射器(21)和第一成像透镜(22)，曲面反射器(21)为具有正光焦度的凹面反射镜，照明模块(20)的主光轴穿过曲面反射器(21)的反射面，第一成像透镜(22)位于曲面反射器(21)的反射面的一侧。该车载的小型投影灯系统能够确保单向维度的尺寸不会过大，安装设计时不易受所安装汽车结构的有限空间影响，方便布局用于车载。此外，曲面反射器（21）具有正光焦度，可实现良好的聚焦，不但能够确保投影效果良好，还能够减少投影灯系统中正光焦度透镜的数量，可有效降低投影灯系统的体积以及重量，有利于车载安装使用。

Description

一种车载的小型投影灯系统 技术领域
本发明涉及投影灯系统，具体公开了一种车载的小型投影灯系统。
背景技术
车载的投影灯一般设置在汽车的车身外侧，可用作迎宾功能或Logo灯，也可以设置在车前或车后，用于给行人或车辆以警示提醒，还有一定的装饰效果。
现有技术中，投影灯一般包括同轴设置的光源、准直透镜、菲林片和投影透镜组，如图1所示，整个投影灯系统的轴向尺寸大，投影灯多设置在汽车后视镜、车门底部或汽车踏板等地方，设置投影灯竖直照射到地面形成清晰的图像时，则需要将投影灯的光轴垂直于地面设置，因而需要占用较大的竖直维度空间，而汽车后视镜、汽车踏板等结构都不具备足够的竖直维度空间，被迫缩小的投影灯会导致效率和性能不佳，影响最终投影图案的发光亮度、清晰度和保真性等。
发明内容
基于此，有必要针对现有技术问题，提供一种车载的小型投影灯系统，能够确保单向维度的尺寸不会过大，方便布局用于车载，投影效果良好。
为解决现有技术问题，本发明公开一种车载的小型投影灯系统，包括照明模块和成像模块，照明模块包括依次设置的光源、准直透镜和菲林片；成像模块包括曲面反射器和第一成像透镜，曲面反射器为具有正光焦度的凹面反射镜，照明模块的主光轴穿过曲面反射器的反射面，第一成像透镜位于曲面反射器的反射面的一侧。
进一步的，曲面反射器的反射面为旋转对称的非球面或自由曲面。
进一步的，曲面反射器法线与照明模块的主光轴成夹角α，30°≤α≤60°。
进一步的，曲面反射器的有效口径为P，菲林片的有效口径为Q，成像模块的等效焦距为f，曲面反射器的有效口径满足：
Figure PCTCN2020107966-appb-000001
进一步的，曲面反射器的焦距为F，F＞f。
进一步的，第一成像透镜为凸透镜。
进一步的，第一成像透镜位于曲面反射器的反射面靠近照明模块的一侧。
进一步的，第一成像透镜位于曲面反射器的反射面远离照明模块的一侧。
进一步的，成像模块还包括第二成像透镜，第二成像透镜位于第一成像透镜与曲面反射器之间。
进一步的，第二成像透镜为凹透镜。
本发明的有益效果为：本发明公开一种车载的小型投影灯系统，通过曲面反射器对光路实现偏转调节，能够确保单向维度的尺寸不会过大，安装设计时不易受所安装汽车结构的有限空间影响，方便布局用于车载，此外，曲面反射器具有正光焦度，可实现良好的聚焦，不但能够确保投影效果良好，还能够减少投影灯系统中正光焦度透镜的数量，可有效 降低投影灯系统的体积以及重量，有利于车载安装使用。
附图说明
图1为传统投影灯系统的成像光路示意图。
图2为本发明实施例一的结构示意图。
图3为本发明实施例二的结构示意图。
图4为本发明实施例三的结构示意图。
图5为本发明实施例一的光路和投影光斑示意图。
图6为本发明实施例二的光路和投影光斑示意图。
图7为本发明实施例三的光路和投影光斑示意图。
附图标记为：照明模块10、光源11、准直透镜12、菲林片13、成像模块20、曲面反射器21、第一成像透镜22、第二成像透镜23。
具体实施方式
为能进一步了解本发明的特征、技术手段以及所达到的具体目的、功能，下面结合附图与具体实施方式对本发明作进一步详细描述。
参考图2至图7。
本发明实施例公开一种车载的小型投影灯系统，包括照明模块10和成像模块20，照明模块10与成像模块20的主光轴相交，照明模块10包括同主光轴依次设置的光源11、准直透镜12和菲林片13，菲林片13还可以是其他投影源；成像模块20包括曲面反射器21和第一成像透镜22，曲面反射器21为具有正光焦度的凹面反射镜，通过设置具有正光焦度的凹面反射镜能够有效缩减传统投影灯系统中所需的具有正光焦度的透镜结构，曲面反射器21不存在色差，能够有效提高最终形成的投影光斑的颜色表现，照明模块10的主光轴穿过曲面反射器21的反射面，照明模块10位于曲面反射器21的反射面一侧，第一成像透镜22位于曲面反射器21的反射面的一侧，即第一成像透镜22位于曲面反射器21的反射面的入光主光轴或反射出光主光轴上。
正常工作时，光源11发出的光线经过准直透镜12会聚准直后到达菲林片13，光线经过菲林片13后获得能够形成特定图案的光线，该光线射向曲面反射器21的反射面，曲面反射器21将具有特定图案的入射光线汇聚并反射，配合位于曲面反射器21入射光侧或出射光侧的第一成像透镜22进行调节，最终能够形成低色差的投影光斑。
本投影灯系统通过对光路进行偏转，使得轴向光路获得缩短，能够有效缩减所需的单向维度空间，受所安装空间的限制小，更方便车载使用，设置在车门时，可方便车门空间的排布设计；不同于使用平面镜实现光路偏转的投影灯系统，本发明中的曲面反射器21还具有正光焦度，可有效减少所使用的正光焦透镜，从而有效降低本投影灯系统的体积，还能有效降低重量，整体结构相比现有的投影灯更简洁。
在本实施例中，曲面反射器21的反射面为旋转对称的非球面或自由曲面。
在本实施例中，曲面反射器21中心处的法线与照明模块10的主光轴成夹角α，30°≤α≤60°，来自照明模块10的光线射向曲面反射器21的光线为入射光线，入射光线与法线的夹角为α，出射光线与法线的夹角同样为α，优选地，曲面反射器21的法线、照明模块10的 主光轴的交点在曲面反射器21的反射面上，从而有效提高曲面反射器21的反射效果，确保反射影像不易变形，同时能够最大限度缩减曲面反射器21的尺寸。
在本实施例中，曲面反射器21的有效口径为P，菲林片13的有效口径为Q，成像模块20的等效焦距为f，曲面反射器21的有效口径满足：
Figure PCTCN2020107966-appb-000002
确保曲面反射器21可以完整接收来自照明模块10的能够形成特定图案的光线，避免最终形成的投影光斑图案不完整，同时能够有效避免曲面反射器21的体积过大而影响安装使用。
在本实施例中，成像模块20的等效焦距为f，曲面反射器21的焦距为F，F＞f，能够有效确保成像模块20的体积不会过大，且成像效果有保障。
在本实施例中，第一成像透镜22为具有正光焦度的凸透镜。
基于上述任一实施例，针对成像模块20进一步改良，获得以下实施例一至三的方案。
实施例一，如图2、5所示，在视场角＜30°，成像模块20的F数＞2.5的情况下，第一成像透镜22位于曲面反射器21的反射面靠近照明模块10的一侧，曲面反射器21的入光主光轴穿过第一成像透镜22的中心设置，结构简单，即照明模块10的主光轴穿过第一成像透镜22设置，成像模块20的F数指口径大小。
实施例二，如图3、6所示，第一成像透镜22位于曲面反射器21的反射面远离照明模块10的一侧，曲面反射器21的出光主光轴穿过第一成像透镜22的中心设置。
实施例三，如图4、7所示，成像模块20还包括第二成像透镜23，第二成像透镜23位于第一成像透镜22与曲面反射器21之间，成像模块20中所包含的透镜数量不超过3个。优选地，第二成像透镜23为具有负光焦度的凹透镜，通过凹透镜能够有效消除色散，从而有效提高成像质量。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对本发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (10)

  1. 一种车载的小型投影灯系统，其特征在于，包括照明模块(10)和成像模块(20)，所述照明模块(10)包括依次设置的光源(11)、准直透镜(12)和菲林片(13)；所述成像模块(20)包括曲面反射器(21)和第一成像透镜(22)，所述曲面反射器(21)为具有正光焦度的凹面反射镜，所述照明模块(10)的主光轴穿过所述曲面反射器(21)的反射面，所述第一成像透镜(22)位于所述曲面反射器(21)的反射面的一侧。
  2. 根据权利要求1所述的一种车载的小型投影灯系统，其特征在于，所述曲面反射器(21)的反射面为旋转对称的非球面或自由曲面。
  3. 根据权利要求1所述的一种车载的小型投影灯系统，其特征在于，所述曲面反射器(21)法线与所述照明模块(10)的主光轴成夹角α，30°≤α≤60°。
  4. 根据权利要求1所述的一种车载的小型投影灯系统，其特征在于，所述曲面反射器(21)的有效口径为P，所述菲林片(13)的有效口径为Q，所述成像模块(20)的等效焦距为f，所述曲面反射器(21)的有效口径满足：
    Figure PCTCN2020107966-appb-100001
  5. 根据权利要求4所述的一种车载的小型投影灯系统，其特征在于，所述曲面反射器(21)的焦距为F，F＞f。
  6. 根据权利要求1所述的一种车载的小型投影灯系统，其特征在于，所述第一成像透镜(22)为凸透镜。
  7. 根据权利要求6所述的一种车载的小型投影灯系统，其特征在于，所述第一成像透镜(22)位于所述曲面反射器(21)的反射面靠近所述照明模块(10)的一侧。
  8. 根据权利要求6所述的一种车载的小型投影灯系统，其特征在于，所述第一成像透镜(22)位于所述曲面反射器(21)的反射面远离所述照明模块(10)的一侧。
  9. 根据权利要求8所述的一种车载的小型投影灯系统，其特征在于，所述成像模块(20)还包括第二成像透镜(23)，所述第二成像透镜(23)位于所述第一成像透镜(22)与所述曲面反射器(21)之间。
  10. 根据权利要求9所述的一种车载的小型投影灯系统，其特征在于，所述第二成像透镜(23)为凹透镜。
PCT/CN2020/107966 2020-03-31 2020-08-07 一种车载的小型投影灯系统 WO2021196489A1 (zh)

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