WO2012028061A1 - 一种车用视野扩展透镜 - Google Patents

一种车用视野扩展透镜 Download PDF

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Publication number
WO2012028061A1
WO2012028061A1 PCT/CN2011/078667 CN2011078667W WO2012028061A1 WO 2012028061 A1 WO2012028061 A1 WO 2012028061A1 CN 2011078667 W CN2011078667 W CN 2011078667W WO 2012028061 A1 WO2012028061 A1 WO 2012028061A1
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WIPO (PCT)
Prior art keywords
lens
view
vehicle
field
windshield
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PCT/CN2011/078667
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English (en)
French (fr)
Inventor
杨学斌
Original Assignee
Yang Xuebin
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Publication of WO2012028061A1 publication Critical patent/WO2012028061A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
    • B60R1/001—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles integrated in the windows, e.g. Fresnel lenses

Definitions

  • the present invention relates to the field of automobile safety, and relates to a vehicle vision expansion lens for eliminating a blind spot. Background technique
  • FIG. 1 shows the occlusion of the driver's field of view on the left A-pillar 3, where A straight line 7 is the line of sight of the driver's left eye, B line 8 is the line of sight of the driver's right eye, due to the occlusion of the left A-pillar 3, the driver
  • the shaded area between the left eye line of sight and the right eye line of sight is the blind zone 6 of the left A-pillar that is not visible to the driver.
  • the left side A-column blind zone 6 can reach a width of several meters or more, thereby covering a bicycle or an adult, causing serious driving safety hazards.
  • the right A-pillar 4 has a smaller occlusion range, but there are still safety issues.
  • Chinese Patent Application No. 200510028829. 3 discloses a direct-view method for eliminating a blind spot of a rear view mirror of a vehicle.
  • the patent is an additional angle-adjustable rearview mirror on the inner side of the vehicle A-pillar. Adjustment to eliminate the driver's rear view blind zone. Since the additional rear view mirror and the rear view mirror are mounted in the same orientation, the driver can maintain the original habit without distracting the road condition behind the sight line side.
  • This scheme is only suitable for eliminating the blind zone of the rear view, but the blind zone of the occluded part of the A-pillar cannot be solved by this scheme.
  • Chinese Patent Application No. 200720193146. 8 discloses an improved vehicle rearview mirror, which is mainly disposed at a position adjacent to an A-pillar of a front seat door of a vehicle, and is provided with a corresponding assembly door.
  • the seat body of the triangular area of the window frame is extended from the seat body and provided with a mirror part, wherein the seat body is made transparent, thereby achieving a wide driving visual effect and improving driving safety.
  • the scheme improved the driver's visual blindness to a certain extent, but it still could not solve the elimination of the blind spot blocked by the A-pillar.
  • Chinese Patent Application No. 200810025034. 0 discloses a blind spot detection and alarm device for vehicles.
  • the device uses an infrared probe for detection, and the detection area covers the A-column blind zone and the vehicle-side rear blind zone.
  • the dead zone of the dead zone can be eliminated, the method of using the device is complicated, the cost is high, the installation is inconvenient, and the driver does not observe with the naked eye but judges by the reaction of the instrument, and the effect remains to be verified.
  • Chinese patent application No. 200910196194. 6 discloses a left A-pillar of a car A viewing angle observation mirror, which consists of a refractive glass sheet and a connecting frame.
  • the refractive glass piece is fixed on the connecting frame, and the connecting frame is installed outside the left A column of the automobile, and the refractive glass piece is closely attached to the center of the left side of the front windshield of the vehicle.
  • the refractive glass piece is a glass with a beveled upper and lower cross section, and the angle between the refractive glass piece and the connecting frame is adjustable, and the angle is adjustable.
  • the patent application allows the driver to see the left front visual dead angle that was originally blocked by the left A-pillar through the refraction glass while driving the vehicle.
  • the glass having the oblique cross-section at the upper and lower sections is used, a good transition cannot be formed between the view seen from the refraction glass piece and the view seen from the front windshield, thereby easily causing the driver to have an illusion.
  • the thickness of the refractive glass piece needs to be relatively thick, so that it is relatively heavy, and it is inconvenient to install in a car.
  • U.S. Patent No. 61 08,141 discloses a Fresnel lens that is adapted to the curvature of the front windshield of a vehicle and can be attached to the front windshield through which the driving can be expanded. The field of vision of the staff.
  • the Fresnel lens of this patent can eliminate the driver's blind spot to a certain extent.
  • the Fresnel lens is a deformation of a conventional disc lens, and the image observed through it cannot be continuous with the image directly observed through the windshield, which will affect the judgment of the driver to some extent. Summary of the invention
  • the technical problem to be solved by the present invention is to provide a lens that expands the driver's field of view to reduce or eliminate the driver's viewing dead angle.
  • a vehicle field of view expanding lens which is a cylindrical lens having a cross-sectional shape and/or a convex shape, or a cylindrical Fresnel lens.
  • the cylindrical Fresnel lens is a "step" shaped strip with a series of cross-section zigzag based on a Fresnel lens principle based on a cylindrical lens having a cross-sectional shape and/or a convex shape.
  • Fresnel lens, the edges of the strip are linear and parallel to each other.
  • the invention has the beneficial effects that: the lens can be used to refract light passing through the field-of-view expansion lens of the invention, so that the area blocked by the A-column is refracted into the driver's line of sight through the vehicle vision expansion lens, so that the driver can observe To the A-column occlusion area, eliminating the blind zone of the A-column occlusion; using a cylindrical lens with a cross-sectional shape and/or convex shape or a cylindrical Fresnel lens with the same refraction effect, can reduce the field of view through the vehicle The deformation of the scene observed by the extended lens reduces the influence on the driver's judgment; the extended field lens for the vehicle of the present invention can be separately placed as a product on the windshield and the side window glass, thereby eliminating the blind spots everywhere.
  • the glass not only meets the requirements of strength, wind resistance, etc., but also meets the refraction requirements required to solve the driver's field of view dead angle;
  • the heart line can be horizontal or vertical, or it can be a suitable angle of inclination to eliminate the blind spot.
  • the present invention can also be improved as follows.
  • vehicle field of view expansion lens is a non-optical line symmetry lens.
  • the optical fiber line is a straight line where the optical axis of the cylindrical lens or the cylindrical Fresnel lens is located.
  • the optical fiber line is located inside, outside or at the edge of the vehicular field expansion lens, that is, one side of the vehicular field expansion lens is just on the optical center line, or the vehicular field expansion lens is symmetrical about the optical line.
  • the side is appropriately stretched, or the side of the vehicle's field of view expanding lens close to the optical line is appropriately cut.
  • the beneficial effect of adopting the above further solution is that the vehicle vision expansion lens can be adjusted according to actual needs, so as to facilitate elimination of blind spots, wide field of view, and convenient installation.
  • cylindrical lens having a cross-sectional shape and/or a convex shape extends the ball along the optical line direction Face lens.
  • the cylindrical Fresnel lens extends a circular Fresnel lens in the direction of the optical line.
  • the curvature of one surface of the vehicle field-of-view extended lens matches the curvature of the surface of the windshield of the automobile.
  • the vehicle field of view expansion lens is used alone as a product, the field of view of the vehicle can be expanded.
  • the lens is easy to mount on the windshield of the car, and can make a good transition between the scene observed by the vehicle field of view expansion lens and the scene observed through the windshield; on the other hand, if the vehicle field of view expands the lens directly Attached or made on the windshield or window glass of the car, the glass surface transition can be smooth and beautiful.
  • the scene observed by the vehicle field of view expansion lens and the scene observed through the windshield can be generated. Good transition.
  • one surface of the vehicle vision expanding lens is a flat surface.
  • the advantage of using the above further solution is that if the vehicle field of view expansion lens is used as a product alone, it is easy to produce and install, and the production cost is low, and it can be directly attached to the automobile glass, and can be used in most automobiles.
  • vehicle field of view expansion lens is disposed on the side, the top side or the middle of the windshield, or the side of the window glass, and is integrated with the windshield or the window glass.
  • the advantage of using the above further solution is that it is integrated with the windshield or the window glass to make the car body beautiful and the effect of clearing the blind spot is better.
  • the vehicle field of view expansion lens is disposed on the windshield or the window glass through the connecting member, or directly attached to the windshield or the window glass.
  • the connecting member comprises a suction cup, glue, and a connecting device such as a bracket, a flange, a screw or the like.
  • the vehicle field-of-view expansion lens is made of glass or plexiglass.
  • Figure 1 is a schematic view of the A-pillar blind zone on the left side of the car
  • Figure 2A is a schematic diagram of lens refraction
  • 2B is a schematic diagram of a convex lens refraction
  • FIG. 3 is a schematic view showing a first embodiment of a field-of-view expansion lens for a vehicle according to the present invention
  • FIG. 4 is a schematic view of a Fresnel cylindrical lens of a second embodiment of a field-of-view extended lens for a vehicle according to the present invention
  • FIG. 5A is a schematic view showing a third embodiment of the present invention
  • 5B is a schematic view showing the surface of one side of the third embodiment of the vehicle field-of-view expanding lens of the present invention, which is a plane and the surface of the Fresnel lens;
  • 6A is a schematic view showing a cylindrical lens + a partial ordinary spherical lens in the fourth embodiment of the field-of-view extended lens for a vehicle according to the present invention
  • 6B is a front view 1 showing a cylindrical Fresnel lens + a portion of a conventional circular Fresnel lens in the fourth embodiment of the vehicle field-of-view expansion lens of the present invention
  • 6C is a front view view showing a front view of a cylindrical Fresnel lens + a part of a common circular Fresnel lens in the fourth embodiment of the vehicle field-of-view expansion lens of the present invention
  • FIG. 7A is a schematic view showing the vehicle field-of-view expanding lens of FIG. 3 appropriately extending on the other side of the optical line symmetry;
  • FIG. 7B is a schematic view showing the vehicle field expansion lens of FIG. 4 appropriately extended on the other side of the optical line symmetry;
  • FIG. 7C is a schematic view showing the vehicle field expansion lens of the present invention shown in FIG. 5A appropriately extended on the other side of the optical line symmetry;
  • FIG. 7D is another view of the vehicular field of view expanding lens of the present invention shown in FIG. 5B in terms of line symmetry about the optical line a schematic diagram of appropriate extension;
  • Figure 7E is a schematic view showing the vehicle field-of-view expanding lens of the present invention shown in Figure 6A appropriately extended on the other side of the optical line symmetry;
  • FIG. 7F is a schematic view showing the vehicle field expansion lens of the present invention shown in FIG. 6B appropriately extended on the other side of the optical line symmetry;
  • FIG. 7G is a schematic view showing the vehicle field-of-view expanding lens of FIG. 6C appropriately extending on the other side of the optical line symmetry;
  • FIG. 8A is a schematic view showing a portion of the vehicle field-of-view expansion lens of the present invention shown in FIG. 3 which is appropriately reduced in a portion close to the optical line;
  • FIG. 8B is a schematic view showing the portion of the vehicle field-of-view expansion lens of the present invention shown in FIG. 4 which is appropriately reduced near the optical line;
  • FIG. 8C is a schematic view showing the portion of the vehicle field-of-view expansion lens of the present invention shown in FIG. 5A which is appropriately reduced near the optical line;
  • FIG. 8D is a schematic view showing the portion of the vehicle field-of-view expansion lens of the present invention shown in FIG. 5B which is appropriately reduced near the optical line;
  • FIG. 8E is a schematic view showing the portion of the vehicle field-of-view expansion lens of the present invention shown in FIG. 6A which is appropriately reduced near the optical line;
  • FIG. 8F is a schematic view showing the portion of the vehicle field-of-view expansion lens of the present invention shown in FIG. 6B which is appropriately reduced near the optical line;
  • FIG. 8G is a schematic view showing the portion of the vehicle field-of-view expansion lens of the present invention which is close to the optical line as shown in FIG. 6C;
  • Fig. 9 is a view showing the effect of the vehicle using the field-of-view expansion lens of the present invention.
  • both the lens and the convex lens can refract light, and all kinds of glasses for correcting vision are made by the principle of lens and convex lens.
  • 2A and 2B show a half-edge lens, which is not a common optically symmetrical lens.
  • the lens and the convex lens shown in Figs. 2A and 2B respectively can make the transmitted light more to the left.
  • the transmitted light corresponding to the incident light in the range of the incident angle on the left side is only distributed in a relatively small angular range, so that it is suitable for solving the problem of observing the dead angle of the automobile.
  • the lens has only half of it, it has no effect on the light incident on the right side, so the image it presents is also continuous.
  • the following description only shows the left semi-concave lens, but the same principle can be applied to the right semi-concave lens or the left and right lenticular lenses.
  • the vehicle field-of-view expansion lens of the present invention is a cylindrical lens having a concave cross section, as shown in FIG. 3, and may also have a convex shape, and the vehicle vision of the present invention.
  • the extended lens is a non-optical line symmetrical lens.
  • the field-of-view extended lens of the present invention can also be designed as a cylindrical Fresnel lens by the same principle as the Fresnel lens, as shown in Fig. 4.
  • a series of bands are used to approximate the concave shape of Fig. 3 to achieve the same effect.
  • the field-of-view extended lens of the present invention shown in FIG. 3 and FIG. 4 can be mounted on a bracket, The rear bracket is then mounted on the inside of the A-pillar of the car through flanges and screws or suction cups. Of course, it can be installed by glue or other means, or attached directly to the windshield or window glass. Basically parallel to the front windshield, and axially parallel to the car A-pillar. Due to the refraction of the vehicle's field of view extended lens, the visual field on both sides of the driver has been greatly expanded.
  • the vehicle field of view extension lens may be fixed on the support or may be movable for driver adjustment.
  • the field-of-view extended lens of the present invention shown in FIG. 3 and FIG. 4 can also be mounted on a bracket, and then the bracket is mounted on the rear of the interior of the vehicle through a flange and a screw or a suction cup so as to be substantially parallel to the rear windshield. , and the axial direction is horizontal. Due to the refraction of the vehicle's field of view extension lens, the driver can better observe the rear of the car.
  • the vehicle field of view extension lens can be fixed on the stand or can be active for driver adjustment.
  • the vehicular field-expanding lens of the present invention can also be designed such that one side is a flat surface and the other side is a curved cylindrical surface or an optically equivalent curved cylindrical surface, such as a cylindrical Fresnel lens surface, as shown in Figs. 5A and 5B.
  • the vehicular field of view expanding lens shown in Figs. 5A and 5B can be used to expand the front or rear field of view in the same manner as the vehicular field extending lens shown in Figs. 3 and 4.
  • the vehicle field-of-view extended lens shown in FIG. 5A and FIG. 5B can be directly attached to the front windshield of the vehicle and brought close to the A-pillar, and the axial direction is approximately parallel to the A-pillar, thereby expanding the forward vision of the driver; It is directly attached to the inside of the rear windshield and horizontally horizontal, thus extending the driver's rear view.
  • the flat side of the vehicle can be further changed into a relatively smooth curved surface matching the curvature of the automobile windshield or the window glass for convenience. The fit of the car glass.
  • the two-head or one end of the field-of-view extended lens in the direction of the optical line 9 may be added with a part of a normal spherical lens or a part of a common circular Fresnel lens to further expand the field of view.
  • Figure 6A is at the cylindrical lens edge
  • Figure 6A is at the cylindrical lens edge
  • Figure 6A is at the cylindrical lens edge
  • Figure 6A is at the cylindrical lens edge
  • Figure 6A is at the cylindrical lens edge
  • a partial spherical lens may be added to both ends of the cylindrical lens along the optical line 9;
  • FIG. 6B is a cylindrical Fresnel lens A schematic view of a portion of a common circular Fresnel lens added to one end of the optical line 9;
  • FIG. 6C is a partial ordinary Fresnel lens added to both ends of the cylindrical Fresnel lens along the optical line 9 schematic diagram.
  • the vehicle field-of-view expansion lens can be appropriately extended on the other side of the optical line 9, so that the optical line 9 is in the vehicle field of view.
  • the lens is expanded within the lens to further enlarge the field of view, as shown in Figures 7A, 7B, 7C, 7D, 7E, 7F, and 7G.
  • the extended lens uses the same method to extend the front or back view.
  • the vehicle field of view extension lens shown in Figures 3 to 7 can also be placed horizontally in the upper half of the front windshield.
  • the two sides or sides of the vehicle field-of-view extended lens shown in FIG. 3, FIG. 4, FIG. 5A, FIG. 5B, FIG. 6A, FIG. 6B, and FIG. 6C can be appropriately cut to fit the windshield and side windows of the automobile.
  • the vehicle field-of-view expansion lens of the present embodiment is closer to the vehicle field-of-view expansion lens shown in Embodiments 2 to 4, FIG. 3, FIG. 4, FIG. 5A, FIG. 5B, FIG. 6A, FIG. 6B, and FIG.
  • the portion of the optical core 9 is appropriately cut so that the optical core 9 is outside the vehicular field expansion lens as shown in Figs. 8A, 8B, 8C, 8D, 8E, 8F and 8G. This can also achieve better results.
  • the dead zone 12 when the vehicle view expansion lens is used is a small space surrounded by the C straight line 1 1 , the A straight line 7 and the left A pillar 3, and the left A pillar dead zone 6 due to the left A pillar 3
  • the blind zone 12 when using the vehicle field of view expansion lens surrounded by the C straight line 1 1 , the A straight line 7 and the left A column 3 is much smaller than the left side.
  • the width of the blind spot 12 when the vehicle view expanding lens is surrounded by the C straight line 1 1 , the A straight line 7 and the left A column 3 is sufficiently small, even if there is a blind spot, the blind spot cannot accommodate the body of the next person. The driver can actually observe the road ahead effectively.
  • the vehicular field-expanding lens of the present invention can be disposed not only on the windshield close to the A-pillar to eliminate the blind zone generated by the A-pillar, but also on the side, the top or the middle of the windshield, or the window glass as needed. The side, to achieve the best effect of eliminating the blind spot.
  • the vehicular field-of-view expansion lens of the present invention can be used alone or in addition to the vehicular field-of-view expansion lens of the present invention when manufacturing a windshield or window glass of a vehicle, thereby making the vehicular field of view extended lens of the present invention Wind glass or window glass blends into one.
  • the field-of-view expansion lens for a vehicle of the present invention can be made of a transparent material such as glass or plexiglass as needed.
  • the vehicle vision expansion lens of the invention can also be directly fabricated on the front and rear windshield of the automobile or the side window glass, that is, in the design process of the automobile glass, the required refractive process by the automobile glass is considered. Therefore, the manufactured automobile glass satisfies not only the requirements for strength, wind resistance, etc., but also the refractive requirements required to solve the driver's visual field dead angle.
  • the design of the cylindrical lens can be either horizontal or vertical, or it can be a suitable angle of inclination.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Mechanical Engineering (AREA)
  • Lenses (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Description

说 明 书
一种车用视野扩展透镜
技术领域
本发明涉及汽车安全领域， 是指一种用于消除盲区的车用视野扩展透 镜。 背景技术
驾驶员在汽车上有很多的观察死角， 如 A柱（前挡风玻璃和左、 右前车 门之间的柱）对视野有很大的遮挡， 倒车时对车后部的观察死角等。 图 1显 示了左侧 A柱 3对驾驶员视野的遮挡， 其中 A直线 7为驾驶员左眼的视线， B直线 8为驾驶员右眼的视线， 由于左侧 A柱 3的遮挡， 驾驶员左眼视线和 右目艮视线之间的阴影区域成为驾驶员观察不到的左侧 A柱盲区 6。 该左侧 A 柱盲区 6的宽度可以到达数米以上， 从而遮住一辆自行车或一个成人， 造成 严重的行车安全隐患。 右侧 A柱 4遮挡范围小一些， 但仍然存在安全问题。
为了解决这个问题， 目前已有如下几种解决方案， 但都存在着一定的问 题：
1. 驾驶员不断移动头部， 使得盲区不断变换， 依靠驾驶员的记忆来形 成完整的观察空间。 显然这会加快驾驶员的疲劳， 造成新的安全隐患。 而且 当驾驶员技术不熟练时， 更不会有意识的这样做来避免盲区。
2. 在车外加装摄像头， 车内加装显示器显示摄像头的观察区域， 如申 请号为 200610135233. 8 、 申请号为 200810014922. 2 和申请号为 200920143027. 0的中国专利申请。 其成本高， 并且驾驶员既要观察车外， 同 时还要看车内的显示器， 也很不方便。
3. 在车前部加装两个后视镜。 这一定程度上增加了视野， 但驾驶员观 察点也相应增加了， 并且还增加了风阻， 外形也不够美观。
4. 在前挡风玻璃外加装折光玻璃， 该玻璃截面呈三角形， 如申请号为 200910196194. 6的中国专利申请。 由于加装在车外， 容易丟失， 而且调整不 方便， 对风阻也有影响。
5. 在车内贴上市面上的商品倒车贴。 该方案成本低廉， 但通过倒车贴 看到的图像与直接通过挡风玻璃观察到的图像不连续， 大部分驾驶员都有发 晕的感觉。
申请号为 200510028829. 3 的中国专利申请， 公开了一种直视式消除车 辆后视镜盲区的方法，该专利是在车辆 A柱车内一侧的附加能够调节角度的 后视镜， 通过角度的调节以消除驾驶员的后视盲区。 由于附加后视镜与后视 镜的安装位置方位相同，使得驾驶员可以保持原有习惯而不需要分散视线注 视侧后方的路况。 该方案仅适合于消除后视盲区， 而对于 A柱所遮挡部分的 盲区却无法采用该种方案解决。
申请号为 200720193146. 8 的中国专利申请， 公开了一种改进的车辆后 视镜， 该后视镜主要设置于车辆前座车门的窗框与 A柱相邻之处， 其设有对 应组装于车门的窗框三角区域的座体， 由座体往外延伸而设有视镜部， 其中 该座体设为透明状，藉此，达到驾驶视觉宽广的功效，以提升行车安全。 该方 案在一定程度上改善了驾驶员的视觉盲区，但还不能解决 A柱所遮挡部分盲 区的消除。
申请号为 200810025034. 0的中国专利申请，公开了一种车辆盲区探测、 报警装置， 该装置采用红外探头进行探测， 其探测区域覆盖 A柱盲区和车辆 侧后部盲区。 虽然可以消除盲区死角， 但该方法使用装置较为复杂， 成本较 高， 安装不方便， 并且驾驶员并非采用肉眼进行观察而是通过仪器的反应进 行判断， 其效果还有待考证。
申请号为 200910196194. 6的中国专利申请， 公开了一种汽车左 A柱视 觉死角观察镜， 该观察镜由折光玻璃片和连接架组成。 折光玻璃片固定在连 接架上，连接架安装在汽车左 A柱的外面，并使折光玻璃片紧贴车辆前挡风玻 璃左侧中央。 其中折光玻璃片为上下截面呈斜边的玻璃，折光玻璃片与连接 架之间呈一角度，且角度可调。 该专利申请可以使得驾驶员在驾驶车辆时可 以透过折光玻璃片看到原来被左 A柱挡住的左前方视觉死角。但由于其采用 上下截面呈斜边的玻璃，使得从折光玻璃片上看到的景物与从前挡风玻璃看 到的景物之间不能形成良好的过渡， 从而容易使驾驶员产生错觉。 而且要完 全消除盲区， 需要折光玻璃片的厚度比较厚， 从而也比较重， 在汽车上安装 不方便。
专利号为 61 08141的美国专利公开了一种菲涅耳透镜， 该透镜与汽车前 挡风玻璃的弧度相适配， 可以贴于前挡风玻璃上， 透过该菲涅耳透镜可以扩 大驾驶员的视野范围。采用该专利的菲涅耳透镜在一定程度上可以消除驾驶 员的盲区。 但该菲涅耳透镜是普通圓盘形透镜的变形， 透过其观察到的图像 与直接通过挡风玻璃观察到的图像不能连续， 一定程度上将影响到驾驶员的 判断。 发明内容
本发明所要解决的技术问题是提供一种扩展驾驶员视野的透镜， 以减小 或消除驾驶员的观察死角。
本发明解决上述技术问题的技术方案如下： 一种车用视野扩展透镜， 所 述车用视野扩展透镜为横截面呈 形和 /或凸形的柱面透镜， 或者为柱面菲 涅耳透镜。
其中， 所述柱面菲涅耳透镜为利用菲涅耳透镜原理以横截面呈 形和 / 或凸形的柱面透镜为基础设计的带有一系列横截面呈锯齿状的 "阶梯"形带 区的菲涅耳透镜， 带区的棱边为直线形并彼此相互平行。 本发明的有益效果是： 采用透镜可使经过本发明车用视野扩展透镜的光 线产生折射，从而将 A柱所遮挡的区域经车用视野扩展透镜折射进入驾驶员 的视线， 使得驾驶员可以观察到 A柱遮挡区域， 消除 A柱遮挡的盲区； 采用 横截面呈 形和 /或凸形的柱面透镜或者与其具有同样折射效果的柱面菲涅 耳透镜， 可以减小透过该车用视野扩展透镜所观察到的景物的变形， 减轻对 驾驶员判断的影响； 本发明车用视野扩展透镜， 可以单独作为产品放置于挡 风玻璃以及侧边车窗玻璃上， 从而消除各处的盲区， 也可以直接制作在汽车 的前、 后挡风玻璃或侧边的车窗玻璃上， 即在汽车玻璃的设计过程中就考虑 到由汽车玻璃来完成所需的折光过程，从而使制造出的汽车玻璃不仅满足强 度、 风阻等要求， 还满足解决驾驶员视野死角所需的折光要求； 设计时柱面 透镜的光心线可以是水平或垂直状态， 也可以是一个合适的倾斜角度， 以达 到消除盲区的目的。
在上述技术方案的基础上， 本发明还可以做如下改进。
进一步， 所述车用视野扩展透镜为非光心线对称透镜。
其中， 所述光心线为柱面透镜或者柱面菲涅耳透镜的光心所处的直线。 采用上述进一步方案的有益效果是， 采用非光心线对称的透镜， 使得通 过本发明车用视野扩展透镜观察到的景物和通过汽车玻璃观察到的景物之 间能够产生良好的过渡， 从而使驾驶员观察到的图像可以连续。
进一步， 所述光心线处于车用视野扩展透镜的内部、 外部或者边缘， 即 车用视野扩展透镜的一边正好处于光心线上， 或者车用视野扩展透镜在关于 光心线对称的另一侧进行适当延展，或者车用视野扩展透镜靠近光心线的一 侧进行适当剪裁。
采用上述进一步方案的有益效果是，可以根据实际需要对车用视野扩展 透镜进行调整， 以利于消除盲区， 扩大视野， 方便安装。
进一步， 所述截面呈 形和 /或凸形的柱面透镜沿光心线方向延展出球 面透镜。
进一步， 所述柱面菲涅耳透镜沿光心线方向延展出圓形菲涅尔透镜。 采用上述进一步方案的有益效果是， 可进一步扩大驾驶员的视野。 进一步，所述车用视野扩展透镜的一个面的弧度与挡风玻璃或者车窗玻 璃表面的弧度相匹配。
采用上述进一步方案的有益效果是，车用视野扩展透镜中的一个表面的 弧度与汽车挡风玻璃表面的弧度相匹配， 一方面， 若车用视野扩展透镜单独 作为产品， 可以使车用视野扩展透镜容易安装于汽车挡风玻璃上， 并且使通 过车用视野扩展透镜观察到的景物和通过挡风玻璃观察到的景物之间能够 产生良好的过渡； 另一方面， 若车用视野扩展透镜直接贴附或制作在汽车挡 风玻璃或车窗玻璃上， 可使玻璃表面过渡光滑美观， 另一方面使得通过车用 视野扩展透镜观察到的景物和通过挡风玻璃观察到的景物之间能够产生良 好的过渡。
进一步， 所述车用视野扩展透镜的一个面为平面。
采用上述进一步方案的有益效果是， 若车用视野扩展透镜单独作为产 品， 易于生产和安装， 生产成本低， 可以直接贴附在汽车玻璃上， 在大多数 汽车都可以上使用。
进一步， 所述车用视野扩展透镜设置于挡风玻璃的侧边、 顶边或中间， 或者车窗玻璃的侧边， 并与挡风玻璃或者车窗玻璃融为一体。
采用上述进一步方案的有益效果是， 与挡风玻璃或者车窗玻璃融为一 体， 使车体美观， 并且清除盲区效果更好。
进一步，所述车用视野扩展透镜通过连接件设置于挡风玻璃或者车窗玻 璃上， 或者直接贴附在挡风玻璃或者车窗玻璃上。 其中， 所述连接件包括吸 盘、 胶水， 以及诸如由支架、 法兰盘、 螺丝等组成的连接装置。
进一步， 所述车用视野扩展透镜材质为玻璃或者有机玻璃。 采用上述进一步方案的有益效果是， 成本低廉、 易于制作。 附图说明
图 1为汽车左侧 A柱盲区示意图；
图 2A为 透镜折光原理图；
图 2B为凸透镜折光原理图；
图 3为本发明的车用视野扩展透镜实施例一示意图；
图 4为本发明的车用视野扩展透镜实施例二的菲涅耳柱面透镜示意图； 图 5A为本发明的车用视野扩展透镜实施例三中一面为平面另一面为曲 线柱面的示意图；
图 5B为本发明的车用视野扩展透镜实施例三中一面为平面另一面为菲 涅耳柱面透镜表面的示意图；
图 6A为本发明的车用视野扩展透镜实施例四中采用柱面透镜 +部分普通 球面透镜的示意图；
图 6B为本发明的车用视野扩展透镜实施例四中采用柱面菲涅尔透镜 +部 分普通圓形菲涅尔透镜的正视图一；
图 6C为本发明的车用视野扩展透镜实施例四中采用柱面菲涅尔透镜 +部 分普通圓形菲涅尔透镜的正视图二；
图 7A为图 3所示本发明的车用视野扩展透镜在关于光心线对称的另一 边进行适当延展的示意图；
图 7B为图 4所示本发明的车用视野扩展透镜在关于光心线对称的另一 边进行适当延展的示意图；
图 7C为图 5A所示本发明的车用视野扩展透镜在关于光心线对称的另一 边进行适当延展的示意图；
图 7D为图 5B所示本发明的车用视野扩展透镜在关于光心线对称的另一 边进行适当延展的示意图；
图 7E为图 6A所示本发明的车用视野扩展透镜在关于光心线对称的另一 边进行适当延展的示意图；
图 7F为图 6B所示本发明的车用视野扩展透镜在关于光心线对称的另一 边进行适当延展的示意图；
图 7G为图 6C所示本发明的车用视野扩展透镜在关于光心线对称的另一 边进行适当延展的示意图；
图 8A为图 3所示本发明的车用视野扩展透镜将靠近光心线的部分进行 适当缩减的示意图；
图 8B为图 4所示本发明的车用视野扩展透镜将靠近光心线的部分进行 适当缩减的示意图；
图 8C为图 5A所示本发明的车用视野扩展透镜将靠近光心线的部分进行 适当缩减的示意图；
图 8D为图 5B所示本发明的车用视野扩展透镜将靠近光心线的部分进行 适当缩减的示意图；
图 8E为图 6A所示本发明的车用视野扩展透镜将靠近光心线的部分进行 适当缩减的示意图；
图 8F为图 6B所示本发明的车用视野扩展透镜将靠近光心线的部分进行 适当缩减的示意图；
图 8G为图 6C所示本发明的车用视野扩展透镜将靠近光心线的部分进行 适当缩减的示意图；
图 9为汽车采用本发明的车用视野扩展透镜时的效果示意图。
附图中， 各标号所代表的部件列表如下：
1、 车体， 2、 前挡风玻璃， 3、 左侧 A柱， 4、 右侧 A柱， 5、 后视镜， 6、 左侧 A柱盲区， 7、 A直线， 8、 B直线， 9、 光心线， 10、 车用视野扩展透镜， 11、 C直线， 12、 使用车用视野扩展透镜时的盲区
具体实施方式
以下结合附图对本发明的原理和特征进行描述， 所举实例只用于解释本 发明， 并非用于限定本发明的范围。
如图 2A、 图 2B所示， 透镜和凸透镜均能对光线产生折射， 为矫正视 力所配的各类眼镜均是采用了 透镜和凸透镜的原理制作的。 图 2A和图 2B 中所示为半边透镜， 而并非常见的光心对称的透镜， 图 2A和图 2B分别所示 的 透镜和凸透镜对从左侧入射的光线， 均可以使透射光线更加偏左， 特别 是图 2A所示的 透镜， 其左侧艮大入射角范围的入射光对应的透射光线只 分布在比较小的角度范围内， 因此 4艮适合用于解决汽车观察死角的问题。 而 且由于该透镜只有半边， 对右侧入射的光线没有影响， 因此其呈现的图像也 是连续的。 同理也可以只采用右半凹透镜或左半凸透镜来折射右边的入射光 线。 下面的描述都只给出了左半凹透镜， 但同样的原理可以适用于右半凹透 镜或左、 右半凸透镜。
实施例一
与目前常见的到车贴不同， 本发明的车用视野扩展透镜为一个柱面透 镜， 其横截面呈现出凹形， 如图 3所示， 也可以呈现凸形， 并且本发明的车 用视野扩展透镜为非光心线对称透镜。
实施例二
本发明的车用视野扩展透镜还可以利用菲涅尔透镜同样的原理，将其设 计成柱面菲涅耳透镜， 如图 4所示。 设计柱面菲涅耳透镜时利用一系列的带 区来近似图 3中曲面凹形， 以达到同样的效果。
图 3、 图 4所示的本发明车用视野扩展透镜可以安装在一个支架上， 然 后支架再通过法兰盘与螺丝或吸盘安装在汽车 A柱的内侧边， 当然也可采用 如胶水或者其他的方式进行安装， 或者直接贴附在挡风玻璃或者车窗玻璃 上， 使其基本与前挡风玻璃平行， 且轴向基本平行于汽车 A柱。 由于车用视 野扩展透镜的折光作用， 驾驶员左右两边的视野都得到了很大的扩展。 车用 视野扩展透镜在支架上可以是固定的， 也可以是活动的以便于驾驶员调整。
图 3、 图 4所示的本发明车用视野扩展透镜还可以安装在一个支架上， 然后支架再通过法兰盘与螺丝或吸盘安装在汽车内部的后面，使其基本与后 挡风玻璃平行， 且轴向呈水平。 由于车用视野扩展透镜的折光作用， 驾驶员 可以比较好的观察到汽车后部的情况。车用视野扩展透镜在支架上可以是固 定的， 也可以是活动的以便于驾驶员调整。
实施例三
本发明的车用视野扩展透镜还可以设计成一面是平面， 另一面是曲线柱 面或光学等效的曲线柱面， 如柱面菲涅耳透镜表面， 如图 5A、 图 5B所示。
图 5A和图 5B所示的车用视野扩展透镜可以同图 3和图 4所示的车用视 野扩展透镜使用同样的方法来扩展前面或后面的视野。
图 5A和图 5B所示的车用视野扩展透镜可以直接贴在车内前挡风玻璃上 并使其靠近 A柱， 轴向与 A柱近似平行， 从而扩展驾驶员前向的视野； 也可 以直接贴在后挡风玻璃内侧， 轴向呈水平， 从而扩展驾驶员后向的视野。 当 图 5A和图 5B所示的车用视野扩展透镜贴在汽车玻璃上时， 其平面的一面可 以进一步改成与汽车挡风玻璃或车窗玻璃的弧度相匹配的比较平滑的曲面 以方便与汽车玻璃的贴合。
实施例四
图 3、 图 4、 图 5A和图 5B所示的车用视野扩展透镜沿光心线 9方向的 两头或一头可以加上部分普通球面透镜或部分普通的圓形菲涅尔透镜从而 进一步扩展视野， 如图 6A、 图 6B、 图 6C所示。 其中图 6A为在柱面透镜沿 光心线 9方向的一头加上部分普通球面透镜的示意图， 当然也可以在柱面透 镜沿光心线 9方向的两头均加上部分普通球面透镜； 图 6B为在柱面菲涅尔 透镜沿光心线 9 方向的一头加上部分普通圓形菲涅尔透镜的示意图； 图 6C 为在柱面菲涅尔透镜沿光心线 9方向的两头均加上部分普通圓形菲涅尔透镜 的示意图。
实施例五
图 3、 图 4、 图 5A、 图 5B、 图 6A、 图 6B、 图 6C所示的车用视野扩展透 镜可以在光心线 9的另一侧适当延展，使得光心线 9处于车用视野扩展透镜 之内， 从而进一步扩大视野， 如图 7A、 图 7B、 图 7C、 图 7D、 图 7E、 图 7F、 图 7G所示。
图 6A、 图 6B、 图 6C、 图 7A、 图 7B、 图 7C、 图 7D、 图 7E、 图 7F和图 7G所示的车用视野扩展透镜可以和图 3、 图 4所示的车用视野扩展透镜用同 样的方法来扩展前面或后面的视野。
图 3至图 7所示的车用视野扩展透镜也可以水平放置在前挡风玻璃的上 半部分。
实施例六
根据使用需要， 图 3、 图 4、 图 5A、 图 5B、 图 6A、 图 6B、 图 6C所示的 车用视野扩展透镜的两头或侧边可以适当剪裁， 以适应汽车挡风玻璃、 侧窗 玻璃的尺寸和驾驶员驾驶的需要。
本实施例的车用视野扩展透镜在实施例二至四， 图 3、 图 4、 图 5A、 图 5B、 图 6A、 图 6B、 图 6C所示的车用视野扩展透镜的基础上， 将靠近光心线 9的部分进行适当的剪裁， 使得光心线 9处于车用视野扩展透镜之外， 如图 8A、 图 8B、 图 8C、 图 8D、 图 8E、 图 8F和图 8G所示。 这样同样可以达到较 好的效果。
如图 9所示， 为将本发明车用视野扩展透镜 10设置于前挡风玻璃 2左 侧后的效果图。 此时使用车用视野扩展透镜时的盲区 12是 C直线 1 1、 A直 线 7和左侧 A柱 3围成的一个小空间， 而由于左侧 A柱 3造成的左侧 A柱盲 区 6的大部分景物都可以通过本发明的车用视野扩展透镜 1 2看到， 由 C直 线 1 1、 A直线 7和左侧 A柱 3围成的使用车用视野扩展透镜时的盲区 12远 小于左侧 A柱盲区 6。 如果由 C直线 1 1、 A直线 7和左侧 A柱 3围成的使用 车用视野扩展透镜时的盲区 12 的宽度足够小， 那么即使有盲区存在， 由于 该盲区无法容纳下一个人的身体， 驾驶员实际上还是可以有效地观察前方的 路况。
本发明的车用视野扩展透镜不仅可以设置在靠近 A柱的挡风玻璃以消除 A柱产生的盲区， 也可以根据需要设置于挡风玻璃的侧边、 顶边或中间， 或 者车窗玻璃的侧边， 从而达到消除盲区的最好效果。 本发明的车用视野扩展 透镜可以单独制作使用， 也可以在制造汽车挡风玻璃或者车窗玻璃时， 同时 加入本发明的车用视野扩展透镜，从而使本发明的车用视野扩展透镜与挡风 玻璃或者车窗玻璃融为一体。
本发明车用视野扩展透镜可根据需要采用玻璃、有机玻璃等透明材料制 作。
本发明车用视野扩展透镜也可以直接制作在汽车的前、后挡风玻璃或侧 边的车窗玻璃上， 即在汽车玻璃的设计过程中就考虑到由汽车玻璃来完成所 需的折光过程， 从而使制造出的汽车玻璃满足不仅满足强度、 风阻等要求， 还满足解决驾驶员视野死角所需的折光要求。设计时柱面透镜的光心线可以 是水平或垂直状态， 也可以是一个合适的倾斜角度。
以上所述仅为本发明的较佳实施例， 并不用以限制本发明， 凡在本发明 的精神和原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发 明的保护范围之内。

Claims

权 利 要 求 书
1. 一种车用视野扩展透镜， 其特征在于： 所述车用视野扩展透镜为横 截面呈 形和 /或凸形的柱面透镜， 或者为柱面菲涅耳透镜。
2. 根据权利要求 1所述的车用视野扩展透镜， 其特征在于： 所述车用 视野扩展透镜为非光心线对称透镜。
3. 根据权利要求 2所述的车用视野扩展透镜， 其特征在于： 所述光心 线处于车用视野扩展透镜的内部、 外部或者边缘。
4. 根据权利要求 2所述的车用视野扩展透镜， 其特征在于： 所述截面 呈 形和 /或凸形的柱面透镜沿光心线方向延展出球面透镜。
5. 根据权利要求 2所述的车用视野扩展透镜， 其特征在于： 所述柱面 菲涅耳透镜沿光心线方向延展出圓形菲涅尔透镜。
6. 根据权利要求 1至 5任一项所述的车用视野扩展透镜，其特征在于： 所述车用视野扩展透镜的一个面的弧度与挡风玻璃或者车窗玻璃表面的弧 度相匹配。
7. 根据权利要求 1至 5任一项所述的车用视野扩展透镜，其特征在于： 所述车用视野扩展透镜的一个面为平面。
8. 根据权利要求 1至 5任一项所述的车用视野扩展透镜，其特征在于： 所述车用视野扩展透镜设置于挡风玻璃的侧边、 顶边或者中间， 或者设置于 车窗玻璃的侧边， 并与挡风玻璃或者车窗玻璃融为一体。
9. 根据权利要求 1至 5任一项所述的车用视野扩展透镜，其特征在于： 所述车用视野扩展透镜通过连接件设置于挡风玻璃或者车窗玻璃上，或者直 接贴附在挡风玻璃或者车窗玻璃上。
1 0.根据权利要求 1至 5任一项所述的车用视野扩展透镜，其特征在于： 所述车用视野扩展透镜材质为玻璃或者有机玻璃。
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