CN201017053Y - 多曲面大视野后视镜镜片 - Google Patents

多曲面大视野后视镜镜片 Download PDF

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Publication number
CN201017053Y
CN201017053Y CNU2007201072568U CN200720107256U CN201017053Y CN 201017053 Y CN201017053 Y CN 201017053Y CN U2007201072568 U CNU2007201072568 U CN U2007201072568U CN 200720107256 U CN200720107256 U CN 200720107256U CN 201017053 Y CN201017053 Y CN 201017053Y
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Prior art keywords
lens
visual field
mirror
equal
view mirror
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Expired - Fee Related
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CNU2007201072568U
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吴君中
黄胜
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Priority to CNU2007201072568U priority Critical patent/CN201017053Y/zh
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Priority to PCT/US2008/003435 priority patent/WO2008112309A1/en
Priority to EP08742095A priority patent/EP2130069A4/en
Priority to US12/077,063 priority patent/US20090231740A1/en
Priority to US12/957,043 priority patent/US8172411B2/en
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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
    • B60R1/02—Rear-view mirror arrangements
    • B60R1/08—Rear-view mirror arrangements involving special optical features, e.g. avoiding blind spots, e.g. convex mirrors; Side-by-side associations of rear-view and other mirrors
    • B60R1/081—Rear-view mirror arrangements involving special optical features, e.g. avoiding blind spots, e.g. convex mirrors; Side-by-side associations of rear-view and other mirrors avoiding blind spots, e.g. by using a side-by-side association of mirrors
    • B60R1/082—Rear-view mirror arrangements involving special optical features, e.g. avoiding blind spots, e.g. convex mirrors; Side-by-side associations of rear-view and other mirrors avoiding blind spots, e.g. by using a side-by-side association of mirrors using a single wide field mirror or an association of rigidly connected mirrors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/08—Mirrors
    • G02B5/10—Mirrors with curved faces

Abstract

本实用新型提供了一种多曲面大视野后视镜镜片。所述镜片的镜面形状为自原点向周边渐进发散的多曲面集合，所述镜面形状以下述公式表示：Z＝X/A+Y/B，其中，X，Y、Z表示镜面上的点在X轴、Y轴、Z轴上的投影数值，A和B为常数，A的取值范围为600～800，B与A差值的绝对值大于等于100小于等于200。本实用新型的镜面形状呈自原点向周边渐进发散的多曲面镜面，镜面的曲率半径变化是渐进和规律的，镜面形状既照顾到影像和距离判断真实又使视野尽量扩大，使后视镜镜片兼具影像和距离判断真实及视野扩大的优点。

Description

多曲面大视野后视镜镜片
技术领域
本实用新型涉及后视镜镜片领域。
背景技术
现有的后视镜镜片，比如车辆后视镜镜片主要采用平面镜，球面镜和非球面镜三类。平面镜影像真实，但视野狭窄，后视盲区较大。球面镜视野较大，曲率半径越小，后视盲区越少；但随之而来的问题是影像变形，后视距离判断失真。非球面镜是指整个镜面由两处不同曲率半径的球面镜组成，其中主视镜面为曲率半径较大的球面镜，它接近平面镜，约占整个非球面镜的2/3区域，主要解决后视影像真实的问题；辅视镜面为其余的约1/3区域，由曲率半径很小的球面镜组成，主要解决后视盲区的问题。主视镜和辅视镜之间区域采取曲率半径平滑过渡的技术。这种镜面技术较好地解决了视野和失真之间的关系，但是由于主视镜和辅视镜曲率半径相差过大，虽然采取了平滑过渡的技术，在两种镜面过渡的区域，仍然给人影像过渡突兀的感觉，妨碍影正确的距离判断。
发明内容
本实用新型所要解决的技术问题是提供一种兼顾影像和距离判断真实及视野扩大的多曲面大视野后视镜镜片。为此，本实用新型采用以下技术方案：所述镜片的镜面形状为自原点向周边渐进发散的多曲面集合，所述镜面形状以下述公式表示：
Z＝X/A+Y/B，其中，X，Y、Z表示镜面上的点在X轴、Y轴、Z轴上的投影数值，A和B为常数，A的取值范围为600～800，B与A差值的绝对值大于等于100小于等于200。
由于采用本实用新型的技术方案，镜面形状呈自原点向周边渐进发散的多曲面镜面，镜面的曲率半径变化是渐进和规律的，镜面形状既照顾到影像和距离判断真实又使视野尽量扩大，使后视镜镜片兼具影像和距离判断真实及视野扩大的优点。
附图说明
图1为本实用新型所提供的后视镜镜片实施例的三维立体图。
具体实施方式
参照附图1。本实用新型所提供的后视镜镜片，其镜面形状为自原点向周边渐进发散的多曲面集合，所述镜面形状以下述公式表示：
Z＝X/A+Y/B，其中，X，Y、Z表示镜面上的点在X轴、Y轴、Z轴上的投影数值，A和B为常数，A的取值范围为600～800，B与A差值的绝对值大于等于100小于等于200。
在制作时，根据客户要求的后视镜镜面的大小，取双倍于镜面的矩形模具材料作摸具方料，取该矩形中心为原点。
根据客户后视范围的实际需要，取常数A和B，若该后视镜主要用作水平观察，则A小于B；若该后视镜主要用作垂直观察，则A大于B；
根据公式Z＝X/A+Y/B，X取值0、1、2、3...n等数值或具有小数的非自然数，Y取值0、1、2、3...m等数值或具有小数的非自然数，相应计算Z的数值，从而形成若干决定镜面形状的坐标值，并根据上述坐标值加工模具方料。
若该后视镜主要用作水平观察，右镜自模具方料右边沿开始加工；左镜自模具方料左边沿开始加工。
若该后视镜主要用作垂直观察，左右镜皆从模具下边沿开始加工。
根据上述坐标值制成模具后，并以此制成后视镜镜片，其形状参照图1。

Claims (1)

1.多曲面大视野后视镜镜片，其特征在于所述镜片的镜面形状为自原点向周边渐进发散的多曲面集合，所述镜面形状以下述公式表示：
Z＝X/A+Y/B，其中，X，Y、Z表示镜面上的点在X轴、Y轴、Z轴上的投影数值，A和B为常数，A的取值范围为600～800，B与A差值的绝对值大于等于100小于等于200。
CNU2007201072568U 2007-03-14 2007-03-14 多曲面大视野后视镜镜片 Expired - Fee Related CN201017053Y (zh)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CNU2007201072568U CN201017053Y (zh) 2007-03-14 2007-03-14 多曲面大视野后视镜镜片
PCT/US2008/003435 WO2008112309A1 (en) 2007-03-14 2008-03-14 Multi-curvature convex mirror having enhanced field of vision
EP08742095A EP2130069A4 (en) 2007-03-14 2008-03-14 CONVEX MIRROR WITH MULTIPLE CURVES PROVIDING A BETTER FIELD OF VISION
US12/077,063 US20090231740A1 (en) 2007-03-14 2008-03-14 Multi-curvature convex mirror having an enhanced field of vision
US12/957,043 US8172411B2 (en) 2007-03-14 2010-11-30 Multi-curvature convex mirror having an enhanced field of vision

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007201072568U CN201017053Y (zh) 2007-03-14 2007-03-14 多曲面大视野后视镜镜片

Publications (1)

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CN201017053Y true CN201017053Y (zh) 2008-02-06

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US (1) US20090231740A1 (zh)
EP (1) EP2130069A4 (zh)
CN (1) CN201017053Y (zh)
WO (1) WO2008112309A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106163875A (zh) * 2014-03-04 2016-11-23 韩商牛有限公司 车辆用侧镜

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8979287B2 (en) * 2009-06-11 2015-03-17 Drexel University Reflective surface producing a non-reversed, undistorted, perspective view
US20150274077A1 (en) * 2014-04-01 2015-10-01 Caterpillar Global Mining Llc Convex mirror for large vehicles
US9340160B2 (en) 2014-08-04 2016-05-17 Lang-Mekra North America, Llc Low distortion convex mirror for a vehicle rearview mirror assembly

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US4258979A (en) * 1978-12-08 1981-03-31 Mahin William E Rear view mirror assembly
US4730914A (en) * 1986-12-22 1988-03-15 Safety Cross Mirror Co., Inc. Elongate, arcuate mirror with generally convex surface portions
US5084785A (en) * 1990-05-11 1992-01-28 Rovic Corporation Aspheric elliptical paraboloid safety mirror
US5557467A (en) * 1990-09-07 1996-09-17 The Lanechanger, Inc. Combination rearview mirror
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Publication number Priority date Publication date Assignee Title
CN106163875A (zh) * 2014-03-04 2016-11-23 韩商牛有限公司 车辆用侧镜

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WO2008112309A1 (en) 2008-09-18
EP2130069A4 (en) 2011-05-04
US20090231740A1 (en) 2009-09-17
EP2130069A1 (en) 2009-12-09

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