TWI794798B - Vehicle lamp device and projection lens for vehicle lamp - Google Patents

Vehicle lamp device and projection lens for vehicle lamp Download PDF

Info

Publication number
TWI794798B
TWI794798B TW110115182A TW110115182A TWI794798B TW I794798 B TWI794798 B TW I794798B TW 110115182 A TW110115182 A TW 110115182A TW 110115182 A TW110115182 A TW 110115182A TW I794798 B TWI794798 B TW I794798B
Authority
TW
Taiwan
Prior art keywords
lens
lenses
projection lens
projection
aperture
Prior art date
Application number
TW110115182A
Other languages
Chinese (zh)
Other versions
TW202233989A (en
Inventor
江辰安
陳時偉
Original Assignee
揚明光學股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 揚明光學股份有限公司 filed Critical 揚明光學股份有限公司
Priority to US17/469,120 priority Critical patent/US11519577B2/en
Priority to CN202210098633.5A priority patent/CN114963117A/en
Publication of TW202233989A publication Critical patent/TW202233989A/en
Application granted granted Critical
Publication of TWI794798B publication Critical patent/TWI794798B/en

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • F21S41/153—Light emitting diodes [LED] arranged in one or more lines arranged in a matrix
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • 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
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • 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
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • 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
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lenses (AREA)

Abstract

A vehicle lamp device including a matrix image light source, a projection lens, an aperture and a vehicle cover lens. The projection is arranged in the downstream of the optical path of the matrix image light source. The projection lens is mainly composed of two to three optical diopter lenses. The aperture is arranged between the outermost lenses at both ends of the projection lens. The vehicle cover lens is arranged in the downstream of the light path of the projection lens. The distance between the optical centers of the outermost lens surfaces at both ends of the projection lens is between 30 mm and 85 mm. In addition, a projection lens for vehicle lamp is also proposed.

Description

車燈裝置及用於車燈的投影鏡頭 Car light device and projection lens for car light

本發明是有關於一種投影裝置以及鏡頭，且特別是有關於一種車燈裝置及用於車燈的投影鏡頭。 The present invention relates to a projection device and a lens, and in particular to a vehicle lamp device and a projection lens for the vehicle lamp.

為了達到行車安全目的，車用頭燈照明的亮度與光場分佈有一定的規範要求。同時，節能與效率，也一直是車用照明的重要要求。 In order to achieve the purpose of driving safety, there are certain normative requirements for the brightness and light field distribution of vehicle headlight lighting. At the same time, energy saving and efficiency have always been important requirements for automotive lighting.

一般光源，無論是鹵素燈、金屬燈、LED燈...等等，都無法直接投射使用，必須經過改變光場的步驟，才能滿足車用頭燈的照明要求。現行的車燈裝置，以非成像光學技術導引或調整來自光源的照明光束，以達到各國對於車頭燈的技術規範。如何適當調整車燈照明，提供適當的亮度與光場，達到安全駕駛以及預警行人的目的，是相當重要的課題。 General light sources, whether it is halogen lamps, metal lamps, LED lights, etc., cannot be directly projected and used. Only by changing the light field can they meet the lighting requirements of vehicle headlights. The current headlight device uses non-imaging optical technology to guide or adjust the illumination beam from the light source, so as to meet the technical specifications of various countries for headlights. How to properly adjust the lighting of car lights, provide appropriate brightness and light field, and achieve the purpose of safe driving and early warning of pedestrians is a very important issue.

本發明提供一種車燈裝置及用於車燈的投影鏡頭，可提 供少透鏡片數、大光圈、高效率，且符合法規要求的移動式照明與投影裝置，以及用於該裝置的投影鏡頭。 The invention provides a car lamp device and a projection lens used for the car lamp, which can improve Provides a mobile lighting and projection device with a small number of lenses, large aperture, high efficiency, and compliance with regulatory requirements, as well as a projection lens for the device.

本發明提供一種車燈裝置，包括矩陣式影像光源、投影鏡頭、光圈及車燈外罩。投影鏡頭設置於矩陣式影像光源的光路下游，且投影鏡頭主要是由包含二至三片具屈光度的透鏡所組成。光圈設置於投影鏡頭兩端最外側透鏡之間。車燈外罩設置於投影鏡頭的光路下游。投影鏡頭兩端的最外側透鏡表面的光學中心之間的距離介於30毫米至85毫米之間。 The invention provides a car light device, which includes a matrix image light source, a projection lens, an aperture and a car light outer cover. The projection lens is arranged downstream of the optical path of the matrix image light source, and the projection lens is mainly composed of two to three lenses with diopters. The aperture is set between the outermost lenses at both ends of the projection lens. The lamp cover is arranged downstream of the optical path of the projection lens. The distance between the optical centers of the outermost lens surfaces at both ends of the projection lens is between 30 mm and 85 mm.

本發明另提供一種用於車燈的投影鏡頭，包括二到三片具屈光度的透鏡，和設置於投影鏡頭兩端最外側透鏡之間的光圈。其中，投影鏡頭的光圈值(F-number)介於0.6至0.85之間，投影鏡頭兩端的最外側透鏡表面的光學中心之間的距離介於30毫米至85毫米之間，以及投影長寬比介於2.5：1至6：1之間。 The present invention further provides a projection lens for vehicle lamps, which includes two to three lenses with diopters, and an aperture arranged between the outermost lenses at both ends of the projection lens. Wherein, the aperture value (F-number) of the projection lens is between 0.6 and 0.85, the distance between the optical centers of the outermost lens surfaces at both ends of the projection lens is between 30 mm and 85 mm, and the projection aspect ratio Between 2.5:1 and 6:1.

本發明再提供一種用於車燈的投影鏡頭，包括由放大側到縮小側依序設置的非球面第一透鏡及組合透鏡，和設置於組合透鏡和鏡頭放大側之間的光圈。其中，第一透鏡外徑大於組合透鏡外徑，投影鏡頭的光圈值(F-number)介於0.6至0.85之間，以及投影長寬比介於2：1至6：1之間。 The present invention further provides a projection lens for vehicle lights, which includes an aspheric first lens and a combination lens arranged in sequence from the enlargement side to the reduction side, and an aperture arranged between the combination lens and the lens enlargement side. Wherein, the outer diameter of the first lens is larger than the outer diameter of the combined lens, the F-number of the projection lens is between 0.6 and 0.85, and the projection aspect ratio is between 2:1 and 6:1.

基於上述，本發明的車燈裝置及投影鏡頭，可使用較少的透鏡片數且提供大光圈、高出光效率的投影或照明效果，且可符合法規要求。因此，可降低製作成本，並可提升照明及投影警示的效果或可降低耗能。此外，本發明的實施例的投影鏡頭具有 較短的鏡頭總長，在做為車燈裝置等交通工具的照明或投影警示設備使用時，可提高整體組裝的彈性。 Based on the above, the vehicle light device and projection lens of the present invention can use fewer lenses and provide projection or lighting effects with a large aperture and high light extraction efficiency, and can meet regulatory requirements. Therefore, the production cost can be reduced, and the effects of lighting and projection warnings can be improved or energy consumption can be reduced. In addition, the projection lens of the embodiment of the present invention has The short overall length of the lens can improve the flexibility of the overall assembly when used as lighting or projection warning equipment for vehicles such as car lighting devices.

為讓本發明的上述特徵和優點能更明顯易懂，下文特舉實施例，並配合所附圖式作詳細說明如下。 In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail together with the accompanying drawings.

10:車燈裝置 10: Car light device

100:投影鏡頭 100: projection lens

110:第一透鏡 110: first lens

112、122、132:放大側表面 112, 122, 132: enlarged side surface

114、124、134:縮小側表面 114, 124, 134: reduced side surface

120:第二透鏡 120: second lens

130:第三透鏡 130: third lens

200:矩陣式影像光源 200: matrix image light source

300:車燈燈罩/車燈外罩 300: lampshade/lamp cover

A1:放大側 A1: Magnification side

A2:縮小側 A2: Reduced side

ST:光圈 ST: Aperture

I:光軸 I: optical axis

LS:發光表面 LS: Luminous surface

LC、SC:光學中心 LC, SC: Optical Center

圖1A、圖1B、圖1C分別為本發明的第一實施例的車燈裝置的示意圖、詳細光學數據及非球面參數。 FIG. 1A , FIG. 1B , and FIG. 1C are schematic diagrams, detailed optical data, and aspheric parameters of a vehicle light device according to a first embodiment of the present invention, respectively.

圖2A、圖2B、圖2C分別為本發明的第二實施例的車燈裝置的示意圖、詳細光學數據及非球面參數。 FIG. 2A , FIG. 2B , and FIG. 2C are schematic diagrams, detailed optical data, and aspheric parameters of a vehicle light device according to a second embodiment of the present invention, respectively.

圖3A、圖3B、圖3C分別為本發明的第三實施例的車燈裝置的示意圖、詳細光學數據及非球面參數。 3A , 3B and 3C are schematic diagrams, detailed optical data and aspheric parameters of a vehicle light device according to a third embodiment of the present invention, respectively.

圖4A、圖4B、圖4C分別為本發明的第四實施例的車燈裝置的示意圖、詳細光學數據及非球面參數。 4A , 4B and 4C are schematic diagrams, detailed optical data and aspheric parameters of a vehicle light device according to a fourth embodiment of the present invention, respectively.

圖5A、圖5B、圖5C分別為本發明的第五實施例的車燈裝置的示意圖、詳細光學數據及非球面參數。 5A , 5B and 5C are schematic diagrams, detailed optical data and aspheric parameters of a vehicle light device according to a fifth embodiment of the present invention, respectively.

圖6A、圖6B、圖6C分別為本發明的第六實施例的車燈裝置的示意圖、詳細光學數據及非球面參數。 FIG. 6A , FIG. 6B , and FIG. 6C are schematic diagrams, detailed optical data, and aspheric parameters of a vehicle light device according to a sixth embodiment of the present invention, respectively.

圖7A、圖7B、圖7C分別為本發明的第七實施例的車燈裝置的示意圖、詳細光學數據及非球面參數。 7A , 7B and 7C are schematic diagrams, detailed optical data and aspheric parameters of a vehicle light device according to a seventh embodiment of the present invention, respectively.

圖8A、圖8B、圖8C分別為本發明的第八實施例的車燈裝置 的示意圖、詳細光學數據及非球面參數。 Fig. 8A, Fig. 8B, Fig. 8C respectively show the lamp device of the eighth embodiment of the present invention Schematic diagram, detailed optical data and aspheric parameters of .

圖9A、圖9B、圖9C分別為本發明的第九實施例的車燈裝置的示意圖、詳細光學數據及非球面參數。 9A , 9B and 9C are schematic diagrams, detailed optical data and aspheric parameters of a car light device according to a ninth embodiment of the present invention, respectively.

圖10A、圖10B、圖10C分別為本發明的第十實施例的車燈裝置的示意圖、詳細光學數據及非球面參數。 FIG. 10A , FIG. 10B , and FIG. 10C are schematic diagrams, detailed optical data, and aspheric parameters of a vehicle light device according to a tenth embodiment of the present invention, respectively.

圖1A為本發明的第一實施例的車燈裝置的示意圖。請參考圖1A。本實施例提供一種車燈裝置10，可提供少透鏡片數、大光圈、高效率的移動式照明或投影裝置。在本實施例中，車燈裝置10包括投影鏡頭100、矩陣式影像光源200及車燈燈罩或車燈外罩300。矩陣式影像光源200用以提供影像光束(未顯示)，而投影鏡頭100設置於矩陣式影像光源200的光路下游，用以將影像光束投射出車燈裝置10至投影目標(未顯示)，例如是路面或牆面。本實施例的車燈裝置10還包括車燈燈罩/車燈外罩300，設置於投影鏡頭100的光路下游。影像光束自投影鏡頭100投射出後，通過車燈燈罩300投射至投影目標。車燈燈罩300可進一步調節影像光束，或可具有保護投影鏡頭100、矩陣式影像光源200或其他車燈元件的功能，但本發明並不限於此。本實施例的車燈裝置10可以應用作為裝設在汽車上的燈具，例如是遠光燈、近光燈、位置燈、剎車燈、倒車燈、尾燈、霧燈、牌照燈、日間行車燈與轉向燈等，本發明並不限於此。 FIG. 1A is a schematic diagram of a vehicle light device according to a first embodiment of the present invention. Please refer to Figure 1A. This embodiment provides a vehicle light device 10, which can provide a mobile lighting or projection device with a small number of lenses, a large aperture, and high efficiency. In this embodiment, the vehicle light device 10 includes a projection lens 100 , a matrix image light source 200 , and a vehicle light shade or vehicle light housing 300 . The matrix image light source 200 is used to provide image light beams (not shown), and the projection lens 100 is disposed downstream of the optical path of the matrix image light source 200 to project the image beams out of the vehicle light device 10 to a projection target (not shown), for example be the pavement or the wall. The car light device 10 of this embodiment further includes a car light lampshade/car light housing 300 , which is disposed downstream of the optical path of the projection lens 100 . After the image beam is projected from the projection lens 100 , it is projected to the projection target through the lamp cover 300 . The lamp cover 300 can further adjust the image beam, or can protect the projection lens 100 , the matrix image light source 200 or other lamp components, but the invention is not limited thereto. The car light device 10 of this embodiment can be applied as a lamp installed on a car, such as a high beam light, a low beam light, a position light, a brake light, a reversing light, a tail light, a fog light, a license plate light, a daytime driving light, etc. Lamps and turn signals, etc., the present invention is not limited thereto.

詳細而言，在本實施例中，矩陣式影像光源200例如是 微型發光二極體陣列(micro light emitting diode array，micro LED array)或數位微鏡元件(digital micromirror device，DMD)，但本發明並不限於此。矩陣式影像光源200可提供影像光束，投影鏡頭100將影像光束投影在路面或牆面等處所，以達到法規需求以及對使用者與路上行人的預警效果。舉例而言，影像光束可以是光強度較大且不具特定圖案的光束，用以在駕駛行車時做為足夠亮度且符合規定的照明光。影像光束也可以依需求呈現具特定圖案的光束，例如是箭頭、方形、三角形、圓圈等幾何圖案，用以在駕駛行車時作為具提示用途的圖案或信號。 In detail, in this embodiment, the matrix image light source 200 is, for example A micro light emitting diode array (micro light emitting diode array, micro LED array) or a digital micromirror device (digital micromirror device, DMD), but the present invention is not limited thereto. The matrix image light source 200 can provide image light beams, and the projection lens 100 projects the image light beams on roads or walls, etc., so as to meet regulatory requirements and early warning effects for users and pedestrians on the road. For example, the image light beam may be a light beam with high light intensity and no specific pattern, which is used as illumination light with sufficient brightness and compliance with regulations when driving. The image beam can also present a beam with a specific pattern as required, such as geometric patterns such as arrows, squares, triangles, circles, etc., which are used as patterns or signals for prompting purposes when driving.

圖1B為本發明的第一實施例的車燈裝置10的詳細光學數據。圖1C為本發明的第一實施例的車燈裝置10的非球面參數。請同時參考圖1A至圖1C。投影鏡頭100包含二到三片具屈光度的透鏡，也就是說，投影鏡頭100可包含兩片或三片屈光度皆不為0的光學透鏡的組合。投影鏡頭100也可以是用於車燈的投影鏡頭。投影鏡頭100具有光軸I，光軸I可以是光學透鏡組合的光軸。所述的光學透鏡組合配置於影像光源200的光路下游，用以放大並投射影像光束至投影目標。投影鏡頭100可設計為包括至少一片塑膠鏡片，例如：至少一部分透鏡為塑膠鏡片，且至少另一部分透鏡為玻璃鏡片，但本發明不限於此。投影鏡頭100中的透鏡也可以為玻塑混合透鏡，但本發明並不限於此。另外，投影鏡頭100可包括膠合透鏡或不包括膠合透鏡，但本發明並不限於此。 FIG. 1B is detailed optical data of the vehicle light device 10 according to the first embodiment of the present invention. FIG. 1C shows the aspherical parameters of the vehicle light device 10 according to the first embodiment of the present invention. Please refer to FIG. 1A to FIG. 1C at the same time. The projection lens 100 includes two to three lenses with diopters, that is, the projection lens 100 may include a combination of two or three optical lenses whose diopters are not zero. The projection lens 100 may also be a projection lens for vehicle lights. The projection lens 100 has an optical axis I, which may be an optical axis of an optical lens combination. The optical lens assembly is arranged downstream of the light path of the image light source 200 for enlarging and projecting the image beam to the projection target. The projection lens 100 may be designed to include at least one plastic lens, for example, at least a part of the lens is a plastic lens, and at least another part of the lens is a glass lens, but the invention is not limited thereto. The lens in the projection lens 100 may also be a glass-plastic hybrid lens, but the present invention is not limited thereto. In addition, the projection lens 100 may include a cemented lens or not include a cemented lens, but the present invention is not limited thereto.

如圖1A所示，本實施例的車燈裝置10中，投影鏡頭100包含三片具屈光度的透鏡。具體而言，投影鏡頭100可具有朝向車燈燈罩300的放大側A1以及朝向矩陣式影像光源200的縮小側A2，投影鏡頭100自放大側A1至縮小側A2依序包括第一透鏡110、第二透鏡120及第三透鏡130。 As shown in FIG. 1A , in the vehicle light device 10 of this embodiment, the projection lens 100 includes three lenses with diopters. Specifically, the projection lens 100 may have an enlargement side A1 facing the lampshade 300 and a reduction side A2 facing the matrix image light source 200. The projection lens 100 sequentially includes a first lens 110, a first lens 110, and a lens 110 from the enlargement side A1 to the reduction side A2. The second lens 120 and the third lens 130 .

第一透鏡110為塑膠鏡片且為非球面透鏡。第一透鏡110的屈光度為正且為雙凸透鏡。第一透鏡110中朝向放大側A1的放大側表面112為凸面，而朝向縮小側A2的縮小側表面114為凸面。 The first lens 110 is a plastic lens and is an aspherical lens. The diopter of the first lens 110 is positive and is a biconvex lens. The enlargement side surface 112 of the first lens 110 facing the enlargement side A1 is convex, and the reduction side surface 114 facing the reduction side A2 is convex.

第二透鏡120的屈光度為正且為雙凸透鏡。第二透鏡120中朝向放大側A1的放大側表面122為凸面，而朝向縮小側A2的縮小側表面124為凸面。 The diopter of the second lens 120 is positive and is a biconvex lens. The enlargement side surface 122 of the second lens 120 facing the enlargement side A1 is convex, and the reduction side surface 124 facing the reduction side A2 is convex.

第三透鏡130的屈光度為正且為新月型透鏡。第三透鏡130中朝向放大側A1的放大側表面132為凸面，而朝向縮小側A2的縮小側表面134為凹面。在一實施例中，第三透鏡130的屈光度可為負且為新月型透鏡。 The third lens 130 has a positive diopter and is a crescent lens. The enlargement side surface 132 of the third lens 130 facing the enlargement side A1 is convex, and the reduction side surface 134 facing the reduction side A2 is concave. In one embodiment, the diopter of the third lens 130 may be negative and is a crescent lens.

投影鏡頭100還包括光圈ST。在本實施例中，光圈ST設置於投影鏡頭100兩端的最外側透鏡表面(即第一透鏡110的放大側表面112和第三透鏡130的縮小側表面134)間，光圈值(F-number)介於0.6至0.85之間。光圈ST可設置在透鏡中的一者的表面。在本實施例中，光圈ST設置在第二透鏡120的放大側表面122，例如是以第二透鏡120的放大側表面122作為光圈，或是以環繞第二透鏡120的放大側表面122的機構件做為光圈。 The projection lens 100 also includes a stop ST. In this embodiment, the aperture ST is set between the outermost lens surfaces at both ends of the projection lens 100 (ie, the enlargement side surface 112 of the first lens 110 and the reduction side surface 134 of the third lens 130), and the aperture value (F-number) Between 0.6 and 0.85. The aperture ST may be provided on the surface of one of the lenses. In this embodiment, the aperture ST is set on the magnification side surface 122 of the second lens 120, for example, the magnification side surface 122 of the second lens 120 is used as the aperture, or the mechanism surrounding the magnification side surface 122 of the second lens 120 piece as the aperture.

在本實施例中，第二透鏡120及第三透鏡130的放大側表面122、132以及縮小側表面124、134可以皆為非球面，也可以為球面，本發明並不以此為限。第二透鏡120及第三透鏡130可以為塑膠鏡或玻璃鏡片，本發明並不以此為限。此外，矩陣式影像光源200具有發光表面LS，影像光束自發光表面LS發出。本實施例的其他詳細光學數據如圖1B、圖1C所示。其中，圖1C的欄位中分別示出第一透鏡110的放大側表面112和縮小側表面114的非球面係數。 In this embodiment, the enlargement side surfaces 122 and 132 and the reduction side surfaces 124 and 134 of the second lens 120 and the third lens 130 may both be aspherical or spherical, and the present invention is not limited thereto. The second lens 120 and the third lens 130 can be plastic mirrors or glass mirrors, and the present invention is not limited thereto. In addition, the matrix image light source 200 has a light emitting surface LS from which image beams are emitted. Other detailed optical data of this embodiment are shown in Fig. 1B and Fig. 1C. 1C shows the aspheric coefficients of the enlargement side surface 112 and the reduction side surface 114 of the first lens 110 respectively.

此外，在本實施例中，投影鏡頭100的鏡頭總長TTL小於80毫米。也就是說，自矩陣式影像光源200的發光表面LS到投影鏡頭100的最遠離矩陣式影像光源200的透鏡表面(即第一透鏡110的放大側表面112)在光軸I上的距離小於80毫米。 In addition, in this embodiment, the total lens length TTL of the projection lens 100 is less than 80 mm. That is to say, the distance on the optical axis I from the light-emitting surface LS of the matrix image light source 200 to the lens surface of the projection lens 100 farthest from the matrix image light source 200 (that is, the enlarged side surface 112 of the first lens 110) on the optical axis I is less than 80 mm.

在本實施例中，投影鏡頭100兩端的最外側透鏡表面的光學中心LC、SC之間的距離介於30毫米至85毫米之間，較佳的是投影鏡頭100兩端的最外側透鏡表面的光學中心LC、SC之間的距離介於54毫米至76毫米之間。也就是說，第一透鏡110的放大側表面112的光學中心和第三透鏡130的縮小側表面134的光學中心之間的距離(投影鏡頭100的多個透鏡在光軸上的總長度)介於54毫米至76毫米之間。此外，投影鏡頭100的投影長寬比介於2：1至6：1之間，較佳的是投影鏡頭100的投影長寬比介於2.5：1至6：1之間，可提供14至40度的水平視場角以及5至10度的垂直視場角，以提供符合相關法規的投射效果。 In this embodiment, the distance between the optical centers LC and SC of the outermost lens surfaces at both ends of the projection lens 100 is between 30 millimeters and 85 millimeters, preferably the optical center of the outermost lens surfaces at both ends of the projection lens 100. The distance between the centers LC, SC is between 54 mm and 76 mm. That is, the distance between the optical center of the enlargement side surface 112 of the first lens 110 and the optical center of the reduction side surface 134 of the third lens 130 (the total length of the plurality of lenses of the projection lens 100 on the optical axis) is between Between 54mm and 76mm. In addition, the projection aspect ratio of the projection lens 100 is between 2:1 and 6:1, preferably the projection aspect ratio of the projection lens 100 is between 2.5:1 and 6:1, which can provide 14 to 6:1. 40-degree horizontal field of view and 5 to 10-degree vertical field of view to provide projection effects that comply with relevant regulations.

在本實施例中，矩陣式影像光源200可包括多個微型發光二極體(Micro LED)。在本實施例中，矩陣式影像光源200可為長約12.8毫米、寬約3.2毫米的微型發光二極體陣列，可例如是具有256x64個像素、50微米的像素尺寸。其中，矩陣式影像光源200的空間頻率可為10線對/毫米。於本發明的實施例中，矩陣式影像光源200的空間頻率可介於5~15線對/毫米之間。 In this embodiment, the matrix image light source 200 may include a plurality of micro light emitting diodes (Micro LEDs). In this embodiment, the matrix image light source 200 can be a miniature LED array with a length of about 12.8 mm and a width of about 3.2 mm, such as a pixel size of 256×64 pixels and 50 μm. Wherein, the spatial frequency of the matrix image light source 200 may be 10 line pairs/mm. In an embodiment of the present invention, the spatial frequency of the matrix image light source 200 may be between 5-15 line pairs/mm.

如上所述，本實施例的車燈裝置10具有介於0.6至0.85的光圈值，可提供大光圈、提高出光效率；且可具有介於2.5：1至6：1之間的投影長寬比，可提供14至40度的水平視場角以及5至10度的垂直視場角，以符合相關法規規範。此外，本實施例使用三片透鏡且鏡頭總長介於30至85毫米，使用了較少的透鏡片數，且具有較短的鏡頭總長。另外，本實施例還包括至少一片塑膠鏡片，可進一步降低成本。 As mentioned above, the vehicle light device 10 of this embodiment has an aperture value between 0.6 and 0.85, which can provide a large aperture and improve light extraction efficiency; and can have a projected aspect ratio between 2.5:1 and 6:1 , can provide a horizontal viewing angle of 14 to 40 degrees and a vertical viewing angle of 5 to 10 degrees to comply with relevant regulations. In addition, the present embodiment uses three lenses and the total length of the lens is between 30 mm and 85 mm, which uses fewer lenses and has a shorter total lens length. In addition, this embodiment also includes at least one piece of plastic lens, which can further reduce the cost.

圖2A為本發明的第二實施例的車燈裝置10的示意圖。圖2B為本發明的第二實施例的車燈裝置的詳細光學數據。圖2C為本發明的第二實施例的車燈裝置的非球面參數。請同時參考圖2A至圖2C。本發明的車燈裝置10的第二實施例，其與第一實施例大致相似，兩者的差異在於：第一透鏡110、第二透鏡120及第三透鏡130的各光學數據、非球面係數及各元件的間距等參數不完全相同。 FIG. 2A is a schematic diagram of a vehicle light device 10 according to a second embodiment of the present invention. FIG. 2B is the detailed optical data of the vehicle light device according to the second embodiment of the present invention. FIG. 2C is the aspherical parameters of the vehicle light device according to the second embodiment of the present invention. Please refer to FIG. 2A to FIG. 2C at the same time. The second embodiment of the vehicle light device 10 of the present invention is roughly similar to the first embodiment, the difference between the two lies in: the optical data and aspheric coefficients of the first lens 110, the second lens 120 and the third lens 130 And the parameters such as the spacing of each component are not exactly the same.

圖3A為本發明的第三實施例的車燈裝置10的示意圖。圖3B為本發明的第三實施例的車燈裝置的詳細光學數據。圖3C 為本發明的第三實施例的車燈裝置的非球面參數。請同時參考圖3A至圖3C。本發明的車燈裝置10的第三實施例，其與第一實施例大致相似，而兩者的差異在於：第一透鏡110為新月型透鏡，第一透鏡110的縮小側表面114為凹面。光圈ST設置在第一透鏡110的縮小側表面114，例如是以第一透鏡110的縮小側表面114作為光圈，或是以環繞第一透鏡110的縮小側表面114的機構件做為光圈。此外，第一透鏡110、第二透鏡120及第三透鏡130的各光學數據、非球面係數及各元件的間距等參數不完全相同。 FIG. 3A is a schematic diagram of a vehicle light device 10 according to a third embodiment of the present invention. FIG. 3B is the detailed optical data of the vehicle light device according to the third embodiment of the present invention. Figure 3C is the aspherical parameter of the vehicle light device according to the third embodiment of the present invention. Please refer to FIG. 3A to FIG. 3C at the same time. The third embodiment of the vehicle light device 10 of the present invention is substantially similar to the first embodiment, and the difference between the two is that the first lens 110 is a crescent lens, and the narrowing side surface 114 of the first lens 110 is a concave surface . The aperture ST is disposed on the reducing side surface 114 of the first lens 110 , for example, using the reducing side surface 114 of the first lens 110 as the aperture, or using a mechanism surrounding the reducing side surface 114 of the first lens 110 as the aperture. In addition, parameters such as optical data, aspheric coefficients, and distances between elements of the first lens 110 , the second lens 120 , and the third lens 130 are not completely the same.

另外，在本實施例中，第二透鏡120在光軸I上的厚度大於12毫米。第二透鏡120與該第三透鏡130之間在光軸I上的距離大於1毫米，也就是說，第二透鏡120的縮小側表面124至第三透鏡130的放大側表面132在光軸I上的距離大於1毫米。此外，在本實施例中，光圈ST與第二透鏡120之間在光軸I上的距離大於2毫米。 In addition, in this embodiment, the thickness of the second lens 120 on the optical axis I is greater than 12 millimeters. The distance between the second lens 120 and the third lens 130 on the optical axis I is greater than 1 millimeter, that is to say, the distance between the reduction side surface 124 of the second lens 120 and the enlargement side surface 132 of the third lens 130 is on the optical axis I distance greater than 1mm. In addition, in this embodiment, the distance between the aperture ST and the second lens 120 on the optical axis I is greater than 2 millimeters.

圖4A為本發明的第四實施例的車燈裝置10的示意圖。圖4B為本發明的第四實施例的車燈裝置的詳細光學數據。圖4C為本發明的第四實施例的車燈裝置的非球面參數。請同時參考圖4A至圖4C。本發明的車燈裝置10的第四實施例，其與第三實施例大致相似，兩者的差異在於：第一透鏡110、第二透鏡120及第三透鏡130的各光學數據、非球面係數及各元件的間距等參數不完全相同。 FIG. 4A is a schematic diagram of a vehicle light device 10 according to a fourth embodiment of the present invention. FIG. 4B is the detailed optical data of the lamp device of the fourth embodiment of the present invention. FIG. 4C is the aspherical parameters of the lamp device of the fourth embodiment of the present invention. Please refer to FIG. 4A to FIG. 4C at the same time. The fourth embodiment of the vehicle light device 10 of the present invention is roughly similar to the third embodiment, the difference between the two lies in: the optical data and aspheric coefficients of the first lens 110, the second lens 120 and the third lens 130 And the parameters such as the spacing of each component are not exactly the same.

圖5A為本發明的第五實施例的車燈裝置10的示意圖。 圖5B為本發明的第五實施例的車燈裝置的詳細光學數據。圖5C為本發明的第五實施例的車燈裝置的非球面參數。請同時參考圖5A至圖5C。本發明的車燈裝置10的第五實施例，其與第三實施例大致相似，兩者的差異在於：第一透鏡110為雙凸透鏡，第一透鏡110的縮小側表面114為凸面。光圈ST設置在第一透鏡110與第二透鏡120之間。此外，第一透鏡110、第二透鏡120及第三透鏡130的各光學數據、非球面係數及各元件的間距等參數不完全相同。 FIG. 5A is a schematic diagram of a vehicle light device 10 according to a fifth embodiment of the present invention. FIG. 5B is the detailed optical data of the vehicle light device according to the fifth embodiment of the present invention. FIG. 5C is the aspherical parameters of the vehicle light device according to the fifth embodiment of the present invention. Please refer to FIG. 5A to FIG. 5C at the same time. The fifth embodiment of the vehicle light device 10 of the present invention is substantially similar to the third embodiment, the difference is that the first lens 110 is a biconvex lens, and the narrowing side surface 114 of the first lens 110 is a convex surface. The stop ST is disposed between the first lens 110 and the second lens 120 . In addition, parameters such as optical data, aspheric coefficients, and distances between elements of the first lens 110 , the second lens 120 , and the third lens 130 are not completely the same.

圖6A為本發明的第六實施例的車燈裝置10的示意圖。圖6B為本發明的第六實施例的車燈裝置的詳細光學數據。圖6C為本發明的第六實施例的車燈裝置的非球面參數。請同時參考圖6A至圖6C。本發明的車燈裝置10的第六實施例，其與第一實施例大致相似，兩者的差異在於：本實施例的投影鏡頭100包含二片具屈光度的透鏡。具體而言，投影鏡頭100自放大側A1至縮小側A2依序包括第一透鏡110及第二透鏡120。 FIG. 6A is a schematic diagram of a vehicle light device 10 according to a sixth embodiment of the present invention. FIG. 6B is the detailed optical data of the vehicle light device of the sixth embodiment of the present invention. FIG. 6C is the aspherical parameters of the vehicle light device according to the sixth embodiment of the present invention. Please refer to FIG. 6A to FIG. 6C at the same time. The sixth embodiment of the vehicle light device 10 of the present invention is substantially similar to the first embodiment, the difference between them is that the projection lens 100 of this embodiment includes two lenses with diopters. Specifically, the projection lens 100 sequentially includes a first lens 110 and a second lens 120 from the enlargement side A1 to the reduction side A2.

第一透鏡110為塑膠鏡片且為非球面透鏡。第一透鏡110的屈光度為正且為新月型透鏡。第一透鏡110中朝向放大側A1的放大側表面112為凸面，而朝向縮小側A2的縮小側表面114為凹面。 The first lens 110 is a plastic lens and is an aspherical lens. The diopter of the first lens 110 is positive and is a crescent lens. The enlargement side surface 112 of the first lens 110 facing the enlargement side A1 is convex, and the reduction side surface 114 facing the reduction side A2 is concave.

第二透鏡120的屈光度為正且為新月型透鏡。第二透鏡120中朝向放大側A1的放大側表面122為凸面，而朝向縮小側A2的縮小側表面124為凹面。此外，在本實施例中，第二透鏡120 在光軸I上的厚度大於12毫米。 The diopter of the second lens 120 is positive and is a crescent lens. The enlargement side surface 122 facing the enlargement side A1 of the second lens 120 is convex, and the reduction side surface 124 facing the reduction side A2 is concave. In addition, in this embodiment, the second lens 120 The thickness on the optical axis I is greater than 12 mm.

本實施例的投影鏡頭100還包括光圈ST。在本實施例中，光圈ST設置於投影鏡頭100兩端的最外側透鏡表面(即第一透鏡110的放大側表面112和第二透鏡120的縮小側表面124)間，光圈值(F-number)介於0.6至0.85之間。光圈ST可設置在透鏡中的一者的表面。在本實施例中，光圈ST設置在第二透鏡120的放大側表面122，例如是以第二透鏡120的放大側表面122作為光圈，或是以環繞第二透鏡120的放大側表面122的機構件做為光圈。 The projection lens 100 of this embodiment further includes a diaphragm ST. In this embodiment, the aperture ST is set between the outermost lens surfaces at both ends of the projection lens 100 (that is, the enlargement side surface 112 of the first lens 110 and the reduction side surface 124 of the second lens 120), and the aperture value (F-number) Between 0.6 and 0.85. The aperture ST may be provided on the surface of one of the lenses. In this embodiment, the aperture ST is set on the magnification side surface 122 of the second lens 120, for example, the magnification side surface 122 of the second lens 120 is used as the aperture, or the mechanism surrounding the magnification side surface 122 of the second lens 120 piece as the aperture.

在本實施例中，第二透鏡120的放大側表面122以及縮小側表面124可以皆為非球面，也可以為球面，本發明並不以此為限。第二透鏡120可以為塑膠鏡或玻璃鏡片，本發明並不以此為限。本實施例的其他詳細光學數據如圖6B、圖6C所示。其中，圖6C的欄位中分別示出第一透鏡110的放大側表面112和縮小側表面114的非球面係數。 In this embodiment, the enlargement side surface 122 and the reduction side surface 124 of the second lens 120 can both be aspheric or spherical, and the present invention is not limited thereto. The second lens 120 can be a plastic mirror or a glass mirror, and the present invention is not limited thereto. Other detailed optical data of this embodiment are shown in Fig. 6B and Fig. 6C. Wherein, the columns of FIG. 6C show the aspheric coefficients of the enlargement side surface 112 and the reduction side surface 114 of the first lens 110 respectively.

此外，在本實施例中，投影鏡頭100的鏡頭總長TTL小於80毫米。也就是說，自矩陣式影像光源200的發光表面LS到投影鏡頭100的最遠離矩陣式影像光源200的透鏡表面(即第一透鏡110的放大側表面112)在光軸I上的距離小於80毫米。 In addition, in this embodiment, the total lens length TTL of the projection lens 100 is less than 80 mm. That is to say, the distance on the optical axis I from the light-emitting surface LS of the matrix image light source 200 to the lens surface of the projection lens 100 farthest from the matrix image light source 200 (that is, the enlarged side surface 112 of the first lens 110) on the optical axis I is less than 80 mm.

在本實施例中，投影鏡頭100兩端的最外側透鏡表面的光學中心LC、SC之間的距離介於54毫米至76毫米之間。也就是說，第一透鏡110的放大側表面112的光學中心和第二透鏡120 的縮小側表面124的光學中心之間的距離(投影鏡頭100的多個透鏡在光軸上的總長度)介於54毫米至76毫米之間。此外，投影鏡頭100的投影長寬比介於2.5：1至6：1之間，可提供14至40度的水平視場角以及5至10度的垂直視場角，以提供符合相關法規的投射效果。 In this embodiment, the distance between the optical centers LC and SC of the outermost lens surfaces at both ends of the projection lens 100 is between 54 mm and 76 mm. That is, the optical center of the magnification side surface 112 of the first lens 110 and the second lens 120 The distance between the optical centers of the reducing side surface 124 (the total length of the plurality of lenses of the projection lens 100 on the optical axis) is between 54mm and 76mm. In addition, the projection aspect ratio of the projection lens 100 is between 2.5:1 and 6:1, and can provide a horizontal viewing angle of 14 to 40 degrees and a vertical viewing angle of 5 to 10 degrees, so as to provide a Projection effect.

圖7A為本發明的第七實施例的車燈裝置10的示意圖。圖7B為本發明的第七實施例的車燈裝置的詳細光學數據。圖7C為本發明的第七實施例的車燈裝置的非球面參數。請同時參考圖7A至圖7C。本發明的車燈裝置10的第七實施例，其與第一實施例，兩者的差異在於：本實施例的投影鏡頭100的第二透鏡120和第三透鏡130形成的組合透鏡。具體而言，投影鏡頭100自放大側A1至縮小側A2依序包括第一非球面塑膠透鏡110及第二透鏡120和第三透鏡130形成的一組合透鏡。 FIG. 7A is a schematic diagram of a vehicle light device 10 according to a seventh embodiment of the present invention. FIG. 7B is the detailed optical data of the vehicle light device of the seventh embodiment of the present invention. FIG. 7C is the aspheric parameters of the vehicle light device according to the seventh embodiment of the present invention. Please refer to FIG. 7A to FIG. 7C at the same time. The difference between the seventh embodiment of the vehicle light device 10 of the present invention and the first embodiment lies in the combined lens formed by the second lens 120 and the third lens 130 of the projection lens 100 of this embodiment. Specifically, the projection lens 100 sequentially includes a first aspheric plastic lens 110 , a combined lens formed by a second lens 120 and a third lens 130 from the magnification side A1 to the reduction side A2 .

第一透鏡110為塑膠鏡片且為非球面透鏡。第一透鏡110的屈光度為正且為新月型透鏡。第一透鏡110中朝向放大側A1的放大側表面112為凸面，而朝向縮小側A2的縮小側表面114為凹面。 The first lens 110 is a plastic lens and is an aspherical lens. The diopter of the first lens 110 is positive and is a crescent lens. The enlargement side surface 112 of the first lens 110 facing the enlargement side A1 is convex, and the reduction side surface 114 facing the reduction side A2 is concave.

第二透鏡120的屈光度為正且為雙凸透鏡。第二透鏡120中朝向放大側A1的放大側表面122為凸面，第三透鏡130的屈光度為正且為新月型透鏡。第三透鏡130中朝向放大側A1的放大側表面132為凹面，而朝向縮小側A2的縮小側表面134為凸面。在本實施例中，第二透鏡120在光軸I上的厚度大於6毫米。此外， 第二透鏡120和第三透鏡130所形成的組合透鏡，無論是球面或非球面，當兩透鏡相鄰的兩面有大致相同(曲率半徑差異小於0.005mm)或完全相同(實質相同)的曲率半徑，且可藉由膠合或是機構件等方式相互固定時，其即為組合透鏡。而於本例中，組合透鏡包括的兩枚透鏡為雙膠合透鏡，即各透鏡之間係藉由黏膠黏合而成。 The diopter of the second lens 120 is positive and is a biconvex lens. The magnification side surface 122 of the second lens 120 facing the magnification side A1 is a convex surface, and the third lens 130 has a positive diopter and is a crescent lens. The enlargement side surface 132 of the third lens 130 facing the enlargement side A1 is concave, while the reduction side surface 134 facing the reduction side A2 is convex. In this embodiment, the thickness of the second lens 120 on the optical axis I is greater than 6 millimeters. also, The composite lens formed by the second lens 120 and the third lens 130, no matter it is a spherical surface or an aspherical surface, when the two adjacent surfaces of the two lenses have approximately the same (the difference in the radius of curvature is less than 0.005mm) or completely the same (substantially the same) radius of curvature , and can be fixed to each other by gluing or mechanical parts, etc., it is a combined lens. In this example, the two lenses included in the composite lens are doublet lenses, that is, the lenses are bonded together by glue.

本實施例的投影鏡頭100還包括光圈ST。在本實施例中，光圈ST設置於投影鏡頭100兩端的最外側透鏡表面(即第一透鏡110的放大側表面112和第三透鏡130的縮小側表面134)間，光圈值(F-number)介於0.6至0.85之間。在本實施例中，光圈ST設置在第一透鏡110的縮小側表面114和第二透鏡120的放大側表面122之間，例如是以設置在第一透鏡110的縮小側表面114和第二透鏡120的放大側表面122之間的機構件做為光圈。 The projection lens 100 of this embodiment further includes a diaphragm ST. In this embodiment, the aperture ST is set between the outermost lens surfaces at both ends of the projection lens 100 (ie, the enlargement side surface 112 of the first lens 110 and the reduction side surface 134 of the third lens 130), and the aperture value (F-number) Between 0.6 and 0.85. In this embodiment, the aperture ST is disposed between the reduction-side surface 114 of the first lens 110 and the enlargement-side surface 122 of the second lens 120, for example, between the reduction-side surface 114 of the first lens 110 and the second lens 120. The mechanism between the magnifying side surfaces 122 of 120 serves as an aperture.

在本實施例中，第二透鏡120的放大側表面122，第三透鏡130的放大側表面132以及縮小側表面134可以皆為非球面，也可以為球面，本發明並不以此為限。第二透鏡120及第三透鏡130可以為塑膠鏡或玻璃鏡片，本發明並不以此為限。本實施例的其他詳細光學數據如圖7B、圖7C所示。其中，圖7C的欄位中分別示出第一透鏡110的放大側表面112和縮小側表面114的非球面係數。 In this embodiment, the magnification side surface 122 of the second lens 120 , the magnification side surface 132 and the reduction side surface 134 of the third lens 130 may all be aspherical or spherical, and the present invention is not limited thereto. The second lens 120 and the third lens 130 can be plastic mirrors or glass mirrors, and the present invention is not limited thereto. Other detailed optical data of this embodiment are shown in Fig. 7B and Fig. 7C. Wherein, the columns in FIG. 7C respectively show the aspheric coefficients of the enlargement side surface 112 and the reduction side surface 114 of the first lens 110 .

在本實施例中，投影鏡頭100的鏡頭總長TTL小於85毫米。也就是說，自矩陣式影像光源200的發光表面LS到投影鏡 頭100的最遠離矩陣式影像光源200的透鏡表面(即第一透鏡110的放大側表面112)在光軸I上的距離小於85毫米。此外，在本發明的實施例中，投影鏡頭100的第一片透鏡的鏡片直徑(D1)與兩端的最外側透鏡表面的光學中心LC、SC之間的距離(OAL)的比值介於0.4至2之間。要注意的是，鏡片直徑(D1)是指包含鏡片承靠部的機械長度，而非光學模擬軟體所呈現的有效光通量(CA)長度。 In this embodiment, the total lens length TTL of the projection lens 100 is less than 85 mm. That is to say, from the light-emitting surface LS of the matrix image light source 200 to the projection mirror The distance between the lens surface of the head 100 farthest from the matrix image light source 200 (ie, the enlarged side surface 112 of the first lens 110 ) on the optical axis I is less than 85 mm. In addition, in an embodiment of the present invention, the ratio of the lens diameter (D1) of the first lens of the projection lens 100 to the distance (OAL) between the optical centers LC and SC of the outermost lens surfaces at both ends is between 0.4 and between 2. It should be noted that the lens diameter (D1) refers to the mechanical length including the lens bearing part, not the effective luminous flux (CA) length presented by the optical simulation software.

在本實施例中，投影鏡頭100兩端的最外側透鏡表面的光學中心LC、SC之間的距離介於30毫米至85毫米之間。也就是說，第一透鏡110的放大側表面112的光學中心和第三透鏡130的縮小側表面134的光學中心之間的距離(投影鏡頭100的多個透鏡在光軸上的總長度)介於30毫米至85毫米之間。此外，投影鏡頭100的投影長寬比介於2：1至6：1之間，可提供14至40度的水平視場角以及5至10度的垂直視場角，以提供符合相關法規的投射效果。 In this embodiment, the distance between the optical centers LC and SC of the outermost lens surfaces at both ends of the projection lens 100 is between 30 mm and 85 mm. That is, the distance between the optical center of the enlargement side surface 112 of the first lens 110 and the optical center of the reduction side surface 134 of the third lens 130 (the total length of the plurality of lenses of the projection lens 100 on the optical axis) is between Between 30mm and 85mm. In addition, the projection aspect ratio of the projection lens 100 is between 2:1 and 6:1, and can provide a horizontal viewing angle of 14 to 40 degrees and a vertical viewing angle of 5 to 10 degrees, so as to provide a Projection effect.

圖8A為本發明的第八實施例的車燈裝置10的示意圖。圖8B為本發明的第八實施例的車燈裝置的詳細光學數據。圖8C為本發明的第八實施例的車燈裝置的非球面參數。請同時參考圖8A至圖8C。本發明的車燈裝置10的第八實施例，其與第七實施例大致相似，兩者的差異在於：第一透鏡110、第二透鏡120及第三透鏡130的各光學數據、非球面係數及各元件的間距等參數不完全相同。 FIG. 8A is a schematic diagram of a vehicle light device 10 according to an eighth embodiment of the present invention. FIG. 8B is the detailed optical data of the lamp device of the eighth embodiment of the present invention. FIG. 8C is the aspherical parameters of the lamp device of the eighth embodiment of the present invention. Please refer to FIG. 8A to FIG. 8C at the same time. The eighth embodiment of the vehicle light device 10 of the present invention is roughly similar to the seventh embodiment, the difference between the two lies in: the optical data and aspheric coefficients of the first lens 110, the second lens 120 and the third lens 130 And the parameters such as the spacing of each component are not exactly the same.

圖9A為本發明的第九實施例的車燈裝置10的示意圖。圖9B為本發明的第九實施例的車燈裝置的詳細光學數據。圖9C為本發明的第九實施例的車燈裝置的非球面參數。請同時參考圖9A至圖9C。本發明的車燈裝置10的第九實施例，其與第七實施例大致相似，兩者的差異在於：第一透鏡110、第二透鏡120及第三透鏡130的各光學數據、非球面係數及各元件的間距等參數不完全相同。 FIG. 9A is a schematic diagram of a vehicle light device 10 according to a ninth embodiment of the present invention. FIG. 9B is the detailed optical data of the vehicle light device of the ninth embodiment of the present invention. FIG. 9C is the aspherical parameters of the vehicle light device according to the ninth embodiment of the present invention. Please refer to FIG. 9A to FIG. 9C at the same time. The ninth embodiment of the vehicle light device 10 of the present invention is roughly similar to the seventh embodiment, the difference between the two lies in: the optical data and aspheric coefficients of the first lens 110, the second lens 120 and the third lens 130 And the parameters such as the spacing of each component are not exactly the same.

圖10A為本發明的第十實施例的車燈裝置10的示意圖。圖10B為本發明的第十實施例的車燈裝置的詳細光學數據。圖10C為本發明的第十實施例的車燈裝置的非球面參數。請同時參考圖10A至圖10C。本發明的車燈裝置10的第十實施例，其與第七實施例大致相似，兩者的差異在於：第一透鏡110、第二透鏡120及第三透鏡130的各光學數據、非球面係數及各元件的間距等參數不完全相同。 FIG. 10A is a schematic diagram of a vehicle light device 10 according to a tenth embodiment of the present invention. FIG. 10B is the detailed optical data of the lamp device of the tenth embodiment of the present invention. FIG. 10C is the aspherical parameters of the vehicle light device according to the tenth embodiment of the present invention. Please refer to FIG. 10A to FIG. 10C at the same time. The tenth embodiment of the vehicle light device 10 of the present invention is roughly similar to the seventh embodiment, the difference between the two lies in: the optical data of the first lens 110, the second lens 120 and the third lens 130, aspheric coefficients And the parameters such as the spacing of each component are not exactly the same.

綜上所述，在本發明的車燈裝置及投影鏡頭中，投影鏡頭包含二到三片具屈光度的透鏡，其中多個透鏡在光軸上的總長度介於30毫米至85毫米之間，投影鏡頭的配置並符合投影長寬比介於2：1至6：1之間。本發明的實施例的車燈裝置或投影鏡頭，可使用較少的透鏡片數且提供大光圈、高出光效率的投影或照明效果，且可符合法規要求。因此，可降低製作成本，並可提升照明及警示的效果或可降低耗能。此外，本發明的實施例的投影鏡頭具有較短的鏡頭總長，在做為車燈裝置等交通工具照明設備使 用時，可提高整體組裝的彈性。 To sum up, in the vehicle light device and projection lens of the present invention, the projection lens includes two to three lenses with diopters, wherein the total length of the plurality of lenses on the optical axis is between 30 mm and 85 mm. The configuration of the projection lens conforms to the projection aspect ratio between 2:1 and 6:1. The lamp device or projection lens of the embodiment of the present invention can use fewer lenses and provide projection or lighting effects with a large aperture and high light extraction efficiency, and can meet regulatory requirements. Therefore, the production cost can be reduced, and the effect of lighting and warning can be improved or energy consumption can be reduced. In addition, the projection lens of the embodiment of the present invention has a relatively short total lens length, and is used as a vehicle lighting device such as a car light device. When used, the flexibility of the overall assembly can be improved.

雖然本發明已以實施例揭露如上，然其並非用以限定本發明，任何所屬技術領域中具有通常知識者，在不脫離本發明的精神和範圍內，當可將實施例之間的組件作些許的交換、更換、更動與潤飾，故本發明的保護範圍當視後附的申請專利範圍所界定者為準。 Although the present invention has been disclosed above with the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can use the components of the embodiments as the components without departing from the spirit and scope of the present invention. A little exchange, replacement, modification and modification, so the scope of protection of the present invention should be defined by the scope of the appended patent application as the criterion.

10:車燈裝置 10: Car light device

100:投影鏡頭 100: projection lens

110:第一透鏡 110: first lens

112、122、132:放大側表面 112, 122, 132: enlarged side surface

114、124、134:縮小側表面 114, 124, 134: reduced side surface

120:第二透鏡 120: second lens

130:第三透鏡 130: third lens

200:矩陣式影像光源 200: matrix image light source

300:車燈燈罩/車燈外罩 300: lampshade/lamp cover

A1:放大側 A1: Magnification side

A2:縮小側 A2: Reduced side

ST:光圈 ST: Aperture

I:光軸 I: optical axis

LS:發光表面 LS: Luminous surface

LC、SC:光學中心 LC, SC: Optical Center

Claims (11)

一種車燈裝置，包括：一矩陣式影像光源；一投影鏡頭，設置於該矩陣式影像光源的光路下游，且該投影鏡頭主要是由包含二至三片具屈光度的透鏡所組成；一光圈，設置於該投影鏡頭兩端最外側透鏡之間，其中該投影鏡頭的光圈值(F-number)介於0.6至0.85之間，且該投影鏡頭兩端最外側透鏡表面光學中心之間的距離，介於30~85毫米之間；及一車燈外罩，設置於該投影鏡頭的光路下游。 A car light device, comprising: a matrix image light source; a projection lens, which is arranged downstream of the optical path of the matrix image light source, and the projection lens is mainly composed of two to three lenses with diopters; an aperture, It is arranged between the outermost lenses at both ends of the projection lens, wherein the aperture value (F-number) of the projection lens is between 0.6 and 0.85, and the distance between the optical centers of the outermost lens surfaces at both ends of the projection lens is, between 30 mm and 85 mm; and a car light housing, which is arranged downstream of the optical path of the projection lens. 如請求項1所述的車燈裝置，其中該投影鏡頭滿足下列條件之一：(1)該投影鏡頭由三片具屈光度的透鏡所組成，且其中的兩片透鏡組成一膠合透鏡；(2)該光圈位於該膠合透鏡遠離該矩陣式影像光源之一側；(3)該投影鏡頭兩端最外側透鏡表面光學中心之間的距離，介於54~76毫米之間；(4)該光圈位於該膠合透鏡的光路下游。 The vehicle lamp device as described in Claim 1, wherein the projection lens satisfies one of the following conditions: (1) the projection lens is composed of three lenses with diopters, and two of the lenses form a cemented lens; (2) ) The aperture is located on the side of the cemented lens away from the matrix image light source; (3) The distance between the optical centers of the outermost lens surfaces at both ends of the projection lens is between 54 mm and 76 mm; (4) The aperture Downstream of the optical path of the cemented lens. 如請求項1或2所述的車燈裝置，其中該矩陣式影像光源滿足下列條件之一：(1)空間頻率為10線對/毫米；(2)空間頻率介於5~15線對/毫米之間；(3)包括多個微型發光二極體。 The car light device as described in claim 1 or 2, wherein the matrix image light source meets one of the following conditions: (1) the spatial frequency is 10 line pairs/mm; (2) the spatial frequency is between 5 and 15 line pairs/mm between millimeters; (3) including a plurality of miniature light-emitting diodes. 一種用於車燈的投影鏡頭，包含： 二到三片具有屈光度的透鏡；一光圈，設置於該投影鏡頭兩端最外側透鏡之間；及該鏡頭的光圈值(F-number)介於0.6至0.85之間，而兩端最外側透鏡表面光學中心間的距離介於30~85毫米，且該鏡頭的投影長寬比值，介於2.5：1~6：1之間。 A projection lens for vehicle lights, comprising: Two to three lenses with diopters; an aperture, arranged between the outermost lenses at both ends of the projection lens; and the aperture value (F-number) of the lens is between 0.6 and 0.85, and the outermost lenses at both ends The distance between the optical centers of the surfaces is between 30mm and 85mm, and the projected aspect ratio of the lens is between 2.5:1 and 6:1. 一種用於車燈的投影鏡頭，包括：由放大側到縮小側依序設置的一非球面第一透鏡及一組合透鏡；該第一透鏡外徑大於該組合透鏡；一光圈，設置於該組合透鏡與該鏡頭放大側之間；及該投影鏡頭的光圈值(F-number)介於0.6至0.85之間，且該鏡頭的投影長寬比值，介於2：1~6：1之間。 A projection lens for vehicle lamps, comprising: an aspheric first lens and a combination lens arranged sequentially from the magnification side to the reduction side; the outer diameter of the first lens is larger than the combination lens; an aperture is set on the combination lens between the lens and the enlarged side of the lens; and the aperture value (F-number) of the projection lens is between 0.6 and 0.85, and the projection aspect ratio of the lens is between 2:1 and 6:1. 如請求項4或5所述的投影鏡頭，其中該投影鏡頭滿足下列條件之一：(1)該二到三片具屈光度的透鏡的屈光度均為正；(2)該二到三片具屈光度的透鏡為三片具屈光度的透鏡，且屈光度依序為正、正、負；(3)該二到三片具屈光度的透鏡為兩片具屈光度的透鏡，且其形狀自一放大側至一縮小側依序為非球面透鏡和新月型透鏡；(4)該二到三片具屈光度的透鏡為三片具屈光度的透鏡，且其形狀自一放大側至一縮小側依序為非球面透鏡，雙凸透鏡和新月型透鏡。 The projection lens as described in claim 4 or 5, wherein the projection lens satisfies one of the following conditions: (1) the diopters of the two to three lenses with diopters are all positive; (2) the diopters of the two to three lenses with diopters The lens is three lenses with diopters, and the diopters are positive, positive, and negative in sequence; (3) the two to three lenses with diopters are two lenses with diopters, and their shapes range from one magnification side to one The reduction side is an aspherical lens and a crescent lens in sequence; (4) The two to three lenses with diopters are three lenses with diopters, and their shape is aspherical in sequence from one enlargement side to one reduction side Lenses, lenticular lenses and crescent lenses. 如請求項4或5所述的投影鏡頭，其中該二到三片具屈光度的透鏡為三片具屈光度的透鏡，自一放大側至一縮小側依序為一第一透鏡、一第二透鏡及一第三透鏡，且滿足下列條件之一：(1)該第二透鏡及該第三透鏡之間在一光軸的距離大於1毫米；(2)該光圈和該第二透鏡之間在一光軸的距離大於2毫米；(3)該第二透鏡在一光軸的厚度大於12毫米；(4)該第二透鏡在一光軸的厚度大於6毫米；(5)該投影鏡頭的鏡頭總長小於80毫米。 The projection lens as described in claim 4 or 5, wherein the two to three lenses with diopter are three lenses with diopter, which are sequentially a first lens and a second lens from a magnification side to a reduction side and a third lens, and one of the following conditions is met: (1) the distance between the second lens and the third lens on an optical axis is greater than 1 mm; (2) the distance between the aperture and the second lens is The distance of an optical axis is greater than 2 mm; (3) the thickness of the second lens on an optical axis is greater than 12 mm; (4) the thickness of the second lens on an optical axis is greater than 6 mm; (5) the projection lens The total length of the lens is less than 80mm. 如請求項4或5所述的投影鏡頭，其中該二到三片具屈光度的透鏡為兩片具屈光度的透鏡，自一放大側至一縮小側依序為一第一透鏡及一第二透鏡，且滿足下列條件之一：(1)該第二透鏡在一光軸的厚度大於12毫米；(2)該光圈和該第二透鏡之間在一光軸的距離大於2毫米；(3)該第二透鏡在一光軸的厚度大於6毫米；(4)該投影鏡頭的鏡頭總長小於80毫米。 The projection lens as described in claim 4 or 5, wherein the two to three lenses with diopter are two lenses with diopter, which are a first lens and a second lens in sequence from a magnification side to a reduction side , and one of the following conditions is met: (1) the thickness of the second lens on an optical axis is greater than 12 millimeters; (2) the distance between the aperture and the second lens on an optical axis is greater than 2 millimeters; (3) The thickness of the second lens on an optical axis is greater than 6 millimeters; (4) The total lens length of the projection lens is less than 80 millimeters. 如請求項4或5所述的投影鏡頭，其中該投影鏡頭滿足下列條件之一：(1)該些透鏡為玻塑混合透鏡；(2)該投影鏡頭不包括膠合透鏡；(3)該投影鏡頭包括至少一片塑膠鏡片。 The projection lens as described in claim 4 or 5, wherein the projection lens meets one of the following conditions: (1) the lenses are glass-plastic hybrid lenses; (2) the projection lens does not include a cemented lens; (3) the projection The lens includes at least one plastic lens. 如請求項4或5所述的投影鏡頭，其中該投影鏡頭滿足下列條件之一：(1)該投影鏡頭的第一片透鏡的鏡片直徑與兩端的最外側透鏡表面的光學中心之間的距離的比值介於0.4至2之間；(2)該投影鏡頭兩端最外側透鏡表面光學中心之間的距離，介於54~76毫米之間；(3)該投影鏡頭的投影長寬比值，介於 2.5：1~6：1之間；(4)該投影鏡頭的光圈，設於該些透鏡的表面之一。 The projection lens as described in claim 4 or 5, wherein the projection lens satisfies one of the following conditions: (1) the distance between the lens diameter of the first lens of the projection lens and the optical centers of the outermost lens surfaces at both ends The ratio of the projection lens is between 0.4 and 2; (2) the distance between the optical centers of the outermost lens surfaces at both ends of the projection lens is between 54 and 76 mm; (3) the projection aspect ratio of the projection lens, between 2. Between 5:1~6:1; (4) The aperture of the projection lens is set on one of the surfaces of the lenses. 如請求項4或5所述的投影鏡頭，其中該投影鏡頭用於一車燈裝置，其中該車燈裝置包括一矩陣式影像光源和一車燈外罩，該投影鏡頭設置於該矩陣式影像光源的光路下游，且該車燈外罩設置於該投影鏡頭的光路下游。 The projection lens as described in claim 4 or 5, wherein the projection lens is used for a car light device, wherein the car light device includes a matrix image light source and a car light housing, and the projection lens is arranged on the matrix image light source The downstream of the optical path, and the lamp housing is arranged downstream of the optical path of the projection lens.
TW110115182A 2021-02-26 2021-04-27 Vehicle lamp device and projection lens for vehicle lamp TWI794798B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US17/469,120 US11519577B2 (en) 2021-02-26 2021-09-08 Vehicle lamp device and projection lens therefor
CN202210098633.5A CN114963117A (en) 2021-02-26 2022-01-27 Car light device and projection lens for car light

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW110106989 2021-02-26
TW110106989 2021-02-26

Publications (2)

Publication Number Publication Date
TW202233989A TW202233989A (en) 2022-09-01
TWI794798B true TWI794798B (en) 2023-03-01

Family

ID=82971149

Family Applications (1)

Application Number Title Priority Date Filing Date
TW110115182A TWI794798B (en) 2021-02-26 2021-04-27 Vehicle lamp device and projection lens for vehicle lamp

Country Status (2)

Country Link
CN (1) CN114963112B (en)
TW (1) TWI794798B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006043280A1 (en) * 2006-09-14 2008-03-27 Hella Kgaa Hueck & Co. Vehicle turn signal light, has photoresist aperture arranged between lens and reflector and between lens and closure lens, where opening has smaller diameter than outer diameter of reflector
US20140092619A1 (en) * 2012-10-01 2014-04-03 Osram Sylvania Inc. LED Low Profile Linear Front Fog Module
CN107575830A (en) * 2016-07-04 2018-01-12 Lg电子株式会社 Vehicle lighting means
CN210165315U (en) * 2019-08-05 2020-03-20 比亚迪股份有限公司 Automobile projection lamp
TW202020366A (en) * 2018-11-16 2020-06-01 誠益光電科技股份有限公司 Vehicle lamp device and high-speed lighting vehicle lamp module
CN111219679A (en) * 2020-02-13 2020-06-02 江苏大学 Matrix type LED pixel lamp optical system for automobile illumination

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWM325521U (en) * 2007-06-11 2008-01-11 Young Optics Inc Projection apparatus
DE102010046626B4 (en) * 2010-09-16 2013-05-16 Automotive Lighting Reutlingen Gmbh Color-correcting projection optics for a light module of a motor vehicle headlight
CN203299456U (en) * 2012-12-28 2013-11-20 上海天狼星电器有限公司 Optical system capable of realizing remotely-projected quasi parallel narrow beams
FR3047794B1 (en) * 2016-02-16 2018-03-09 Valeo Vision SYSTEM FOR PROJECTION LENSES OF AT LEAST ONE LIGHT SOURCE
CN107883242B (en) * 2016-09-29 2020-08-11 广州达森灯光股份有限公司 LED light beam pattern lamp
JP2018120834A (en) * 2017-01-27 2018-08-02 株式会社小糸製作所 Lighting fixture unit and vehicular lighting fixture
TWI740996B (en) * 2017-08-02 2021-10-01 揚明光學股份有限公司 Lamp
CN111221112A (en) * 2018-11-27 2020-06-02 扬明光学股份有限公司 Pattern projecting apparatus and method of manufacturing the same
RU195808U1 (en) * 2019-11-20 2020-02-05 Федеральное государственное бюджетное учреждение науки Научно-технологический центр микроэлектроники и субмикронных гетероструктур Российской академии наук (НТЦ микроэлектроники РАН) LIGHTING DEVICE

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006043280A1 (en) * 2006-09-14 2008-03-27 Hella Kgaa Hueck & Co. Vehicle turn signal light, has photoresist aperture arranged between lens and reflector and between lens and closure lens, where opening has smaller diameter than outer diameter of reflector
US20140092619A1 (en) * 2012-10-01 2014-04-03 Osram Sylvania Inc. LED Low Profile Linear Front Fog Module
CN107575830A (en) * 2016-07-04 2018-01-12 Lg电子株式会社 Vehicle lighting means
TW202020366A (en) * 2018-11-16 2020-06-01 誠益光電科技股份有限公司 Vehicle lamp device and high-speed lighting vehicle lamp module
CN210165315U (en) * 2019-08-05 2020-03-20 比亚迪股份有限公司 Automobile projection lamp
CN111219679A (en) * 2020-02-13 2020-06-02 江苏大学 Matrix type LED pixel lamp optical system for automobile illumination

Also Published As

Publication number Publication date
TW202233989A (en) 2022-09-01
CN114963112A (en) 2022-08-30
CN114963112B (en) 2024-08-20

Similar Documents

Publication Publication Date Title
JP4682246B2 (en) Headlamp lens for vehicle headlamp
WO2016051490A1 (en) Vehicle light fixture
JP6324635B2 (en) Headlight module and headlight device
US10323823B2 (en) Lighting device, in particular fog light for motor vehicles
US20190323671A1 (en) Optical lighting device of vehicles
KR20220089942A (en) Lamp for vehicle
CN105318281B (en) Laser optical system for a headlamp
CN212029393U (en) High beam module and vehicle
TWI794798B (en) Vehicle lamp device and projection lens for vehicle lamp
KR20220014690A (en) Lamp for vehicle
JP2018060720A (en) Headlight module and headlight device
TW201307132A (en) Light guide lens and bicycle head light using the same
US11428378B1 (en) Vehicle lamp device and projection lens for vehicle lamp
CN114963117A (en) Car light device and projection lens for car light
CN115342323A (en) Vehicle lamp
US10794562B2 (en) Vehicle optical system and vehicle lamp using the same
TW201432187A (en) Light-emitting member of LED vehicle lamp and optical lens thereof
TWI782827B (en) Projection lens for vehicle and projector for vehicle
CN116670433A (en) Lighting module, head lamp and vehicle
TW201728479A (en) Automobile headlamp
KR20190081639A (en) Optical system for vehicles and vehicle lamp using the same
CN221076239U (en) Lens, optical module, photoelectric module and car lamp
TWI753446B (en) Headlight optical system and its application lamps
CN112805599B (en) Lighting device for vehicle
CN114576592A (en) Lamp for vehicle