JPH10123308A - Mirror surface body and mirror for vehicle - Google Patents
Mirror surface body and mirror for vehicleInfo
- Publication number
- JPH10123308A JPH10123308A JP27600796A JP27600796A JPH10123308A JP H10123308 A JPH10123308 A JP H10123308A JP 27600796 A JP27600796 A JP 27600796A JP 27600796 A JP27600796 A JP 27600796A JP H10123308 A JPH10123308 A JP H10123308A
- Authority
- JP
- Japan
- Prior art keywords
- mirror
- surface portion
- mirror surface
- curvature
- radius
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
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- Optical Elements Other Than Lenses (AREA)
- Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、複合曲面を有する
鏡面体及び車両用鏡に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mirror having a compound curved surface and a vehicle mirror.
【０００２】[0002]
【従来の技術】車両に装備されているインサイドミラー
及びアウトサイドミラーは、運転者が運転席に着座した
状態で後方と左右両側方の外部情報を後ろや左右を振り
向くことなく視認することが出来るように、また、車体
付近の直接視界で捕らえられない盲域部の情報を視認す
ることが出来るように、映像として運転者に提供するも
のである。インサイドミラーは、一般に平面鏡が使用さ
れ、車室内の運転者の目の近傍位置に取り付けられてい
る。また、アウトサイドミラーは、凸面鏡が使用され、
車外のフェンダ或いはドアに取り付けられている。尚、
アウトサイドミラーは、車体の取り付け位置によりフェ
ンダミラー、ドアミラー等と称され、近年、デザイン等
の関係でドアミラーが多く採用されてきている。2. Description of the Related Art Inside mirrors and outside mirrors mounted on a vehicle allow a driver to visually recognize external information on the rear and left and right sides of the driver's seat without turning around behind and left and right. Thus, the information is provided to the driver as an image so that the information in the blind area that cannot be captured in the direct view near the vehicle body can be visually recognized. Generally, a flat mirror is used as the inside mirror, and the inside mirror is attached to a position near the driver's eyes in the vehicle interior. In addition, a convex mirror is used for the outside mirror,
It is attached to a fender or door outside the vehicle. still,
The outside mirror is referred to as a fender mirror, a door mirror, or the like depending on a mounting position of a vehicle body. In recent years, a door mirror has been widely used due to design and the like.
【０００３】前述の各種ミラーの鏡面体に映る鏡像の大
きさは、視認性の大きな要素であり、広範な視界を得る
ためには、鏡面体の曲率半径を小さくして鏡像の縮小率
を高くする必要がある。また、鏡像を視認する際の視認
性や鏡像を視認して得られる距離感を向上させるために
は、比較的曲率半径の大きい凸面鏡を使用して鏡面体に
映る鏡像を大きくすることが好ましい。[0003] The size of the mirror image reflected on the mirror body of the various mirrors described above is an important factor in visibility, and in order to obtain a wide field of view, the radius of curvature of the mirror body is reduced to increase the mirror image reduction ratio. There is a need to. In addition, in order to improve the visibility when viewing the mirror image and the sense of distance obtained by viewing the mirror image, it is preferable to use a convex mirror having a relatively large radius of curvature to enlarge the mirror image reflected on the mirror body.
【０００４】ところで、車高の高い車両では、下方視
界、特に助手席側の下方視界を広くすることが好まし
く、このような車両のアウトサイドミラーとして例え
ば、図７に示すような下方視界拡大タイプのアウトサイ
ドミラー１０がある。鏡面体１１は、複合曲面鏡とさ
れ、主鏡面部１１ａの下方に補助鏡面部１１ｂを連続し
て一体に形成し、主鏡面部１１ａを曲率半径が一定な凸
面鏡とし、主鏡面部１１ａと補助鏡面部１１ｂとの境界
線１１ｃから下方の補助鏡面部１１ｂを曲率半径が図８
〜図１１に示すように徐々に小さくなるように徐変する
凸面鏡に形成したものである。即ち、補助鏡面部１１ｂ
は、図８に示すように鏡面体１１の中心Ｐ0から遠ざか
る（下方向に向かう）方向の曲率半径Ｒが、境界線１１
ｃから遠ざかるに連れて徐々に小さくなるように形成さ
れると共に、図９乃至図１１に示すように境界線１１ｃ
と平行な方向（横方向）の曲率半径Ｒも境界線１１ｃか
ら遠ざかる（下方向に向かう）に連れて徐々に小さくな
るように形成されている。尚、図中各曲率半径Ｒの数値
は、分かり易くするためのもので参考値である。[0004] By the way, in a vehicle having a high vehicle height, it is preferable to widen a lower field of view, in particular, a lower field of view on the passenger side, and as an outside mirror of such a vehicle, for example, a lower field of view type shown in FIG. Outside mirror 10. The mirror body 11 is a compound curved mirror, and an auxiliary mirror surface portion 11b is continuously formed integrally below the main mirror surface portion 11a. The main mirror surface portion 11a is a convex mirror having a constant radius of curvature. The auxiliary mirror surface portion 11b below the boundary line 11c with the mirror surface portion 11b has a radius of curvature of FIG.
As shown in FIG. 11, it is formed in a convex mirror that gradually changes so as to gradually decrease. That is, the auxiliary mirror portion 11b
As shown in FIG. 8, the radius of curvature R in the direction away from (downward from) the center P0 of the mirror 11
c and gradually decreases as it moves away from the boundary line 11c as shown in FIGS.
The radius of curvature R in a direction (lateral direction) parallel to the horizontal direction is also gradually reduced as the distance from the boundary line 11c increases (downward). In addition, the numerical value of each curvature radius R in the figure is for reference, and is for easy understanding.
【０００５】そして、鏡面体１１の主鏡面部１１ａは、
通常のアウトサイドミラーとして使用され、後方及び側
方の視認を行い、補助鏡面部１１ｂは、下方を視認する
ために使用される。図７の鏡面体１１の映像において、
右側のハッチ部分は、車体の映り込みを、当該車体の映
り込みと略並行して中央付近に上下方向に延びる２本の
線は、路面に描かれている車体に平行な直線を、主鏡面
部１１ａの上部に水平に延びる直線は、地平線を示して
いる。尚、この映像は、当該車両の助手席側の後方及び
側方の視界と、下方視界における映像を説明するための
ものである。[0005] The main mirror 11a of the mirror 11 is
It is used as a normal outside mirror, and performs visual recognition of the rear and side, and the auxiliary mirror surface part 11b is used to visually recognize the lower part. In the image of the mirror 11 in FIG.
The hatch on the right side shows the reflection of the vehicle body. The two lines extending in the vertical direction near the center almost in parallel with the reflection of the vehicle body are straight lines parallel to the vehicle body drawn on the road surface and the main mirror surface. A straight line extending horizontally above the portion 11a indicates the horizon. This image is for explaining an image in the field of view behind and on the side of the passenger seat of the vehicle and in the field of view below.
【０００６】他に、複合曲面ミラーを使用したアウトサ
イドミラーとして、例えば、実開昭５０−８７６５２号
公報、実開平１−１０８８５１号公報に提案されたもの
がある。前者は、凸面鏡を後方内側の物体を映す部分か
ら後方外側若しくは側方の物体を映す部分に向かい曲率
半径の次第に小さくなる凸面鏡にして側方（横方向）の
視界を拡大するようにしたものである。また、後者は、
アウターミラーの下部（約１／３）を折曲して、下方を
視認するようにしたものである。Other outside mirrors using a composite curved mirror have been proposed, for example, in Japanese Utility Model Laid-Open No. 50-87652 and Japanese Utility Model Laid-Open No. 1-108851. In the former, a convex mirror having a gradually decreasing radius of curvature is used to enlarge the lateral (lateral) view from a portion reflecting an object inside the rear to a portion reflecting the object outside or the side rearward. is there. The latter is
The lower part (about 1/3) of the outer mirror is bent so that the lower part can be visually recognized.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、上記図
７に示す鏡面体１１の補助鏡面部１１ｂは、境界線１１
ｃと平行な横方向の曲率半径も境界線１１ｃから遠ざか
るに連れて徐々に小さくなるように徐変されて形成され
ているために、下方視界のみならず横方向の視界も拡大
している。従って、補助鏡面部１１ｂの斜め下部に映る
車体側下部の映像が、下方及び外方共に凝縮された像と
なり、著しく歪んだ像となる。このため、図７に示すよ
うに運転者のアイポイントから見た鏡面体１１に映る像
は、境界線１１ｃの上下即ち、主鏡面部１１ａと補助鏡
面部１１ｂとで湾曲が異なることにより、一定の連続感
が得られず、補助鏡面部１１ｂによる視認性が著しく悪
いという問題がある。However, the auxiliary mirror 11b of the mirror 11 shown in FIG.
Since the radius of curvature in the horizontal direction parallel to c is also gradually changed so as to gradually decrease with distance from the boundary line 11c, not only the downward field of view but also the horizontal field of view is enlarged. Therefore, the image of the lower part on the vehicle body side, which is reflected obliquely below the auxiliary mirror surface part 11b, becomes a condensed image both below and outside, and becomes a significantly distorted image. For this reason, as shown in FIG. 7, the image reflected on the mirror 11 viewed from the driver's eye point is constant due to the difference in curvature between the upper and lower boundaries 11c, that is, the main mirror 11a and the auxiliary mirror 11b. However, there is a problem that the sense of continuity is not obtained and the visibility by the auxiliary mirror surface portion 11b is extremely poor.
【０００８】また、前記実開昭５０−８７６５２号公報
に開示されているアウトサイドミラーは、図７の場合と
同様に側方の物体を映す凸面鏡による側方視界が著しく
歪み、側方の視認性が悪い。また、実開平１−１０８８
５１号公報に開示されているアウタミラーは、ミラーの
折曲された位置（折線）近傍において映像が著しく歪ん
でしまい、鏡像の連続性が損なわれ、死角が生じるとい
う問題がある。In the outside mirror disclosed in Japanese Utility Model Laid-Open Publication No. 50-87652, similarly to the case shown in FIG. 7, the side view caused by the convex mirror for reflecting the side object is significantly distorted, and the side view is visually recognized. Poor. In addition, Japanese Utility Model 1-1088
The outer mirror disclosed in JP-A-51-51 has a problem in that an image is significantly distorted near a bent position (a broken line) of the mirror, continuity of a mirror image is impaired, and a blind spot occurs.
【０００９】本発明は、上述の点に鑑みてなされたもの
で、複合曲面を有する鏡面体における見たい方向の視界
を拡大し、且つ鏡像の歪みを小さくして良好な連続感を
有する鏡像を得るようにした鏡面体及び車両用鏡を提供
することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and provides a mirror image having a good sense of continuity by enlarging a field of view in a desired direction in a mirror body having a compound curved surface and reducing distortion of the mirror image. It is an object of the present invention to provide a mirror body and a vehicle mirror obtained.
【００１０】[0010]
【課題を解決するための手段】上記目的を達成するため
に請求項１の本発明では、一定の曲率半径の凸面鏡で形
成されている第１鏡面部と、前記第１鏡面部から延設し
て一体に形成されると共に曲率半径が徐変する凸面鏡で
形成されている第２鏡面部とを有する鏡面体において、
前記第２鏡面部は、前記第１鏡面部から遠ざかる方向の
曲率半径が前記第１鏡面部と前記第２鏡面部との境界か
ら遠ざかるにつれて徐々に小さくなるよう徐変すると共
に、前記境界と平行な方向の曲率半径が前記第１鏡面部
と前記第２鏡面部との境界から遠ざかるにつれて徐々に
大きくなるよう徐変して形成されている構造としたもの
である。In order to achieve the above object, according to the present invention, a first mirror formed by a convex mirror having a constant radius of curvature, and a first mirror extending from the first mirror are provided. And a second mirror surface portion formed of a convex mirror whose curvature radius gradually changes while being integrally formed,
The second mirror surface portion is gradually changed such that a radius of curvature in a direction away from the first mirror surface portion gradually decreases as the distance from the boundary between the first mirror surface portion and the second mirror surface portion increases, and is parallel to the boundary. The radius of curvature in any direction gradually increases as the distance from the boundary between the first mirror surface portion and the second mirror surface portion increases.
【００１１】第１鏡面部に映った映像は、一定の割合で
湾曲して第２鏡面部へと連なる。第２鏡面部は、第１鏡
面部から遠ざかる方向の曲率半径が第１鏡面部と第２鏡
面部との境界から遠ざかるに連れて徐々に小さくなるこ
とにより、当該方向の視界が徐々に拡大される。また、
第２鏡面部は、第１鏡面部との境界と平行な方向の曲率
半径が第１鏡面部との境界から遠ざかるに連れて徐々に
大きくなることにより、当該方向の視界が徐々に狭めら
れて映像の圧縮が抑制される。これにより、第２鏡面部
の映像は、第１鏡面部の映像と滑らかに連続し、且つ第
１鏡面部との境界から遠ざかる方向の視界が徐々に拡大
される。この結果、第１鏡面部及び第２鏡面部に映る像
は、一定の連続感が得られる。The image reflected on the first mirror surface is curved at a fixed rate and continues to the second mirror surface. The radius of curvature of the second mirror surface in the direction away from the first mirror surface gradually decreases with increasing distance from the boundary between the first mirror surface and the second mirror surface, so that the field of view in that direction is gradually enlarged. You. Also,
The second mirror surface portion has a gradually increasing radius of curvature in a direction parallel to the boundary with the first mirror surface portion with increasing distance from the boundary with the first mirror surface portion, so that the field of view in the direction is gradually narrowed. Video compression is suppressed. Thereby, the image of the second mirror surface portion smoothly continues to the image of the first mirror surface portion, and the field of view in the direction away from the boundary with the first mirror surface portion is gradually enlarged. As a result, the images reflected on the first mirror surface portion and the second mirror surface portion have a constant sense of continuity.
【００１２】請求項２の発明では、一定の曲率半径の凸
面鏡で形成されている第１鏡面部と、前記第１鏡面部か
ら延設して一体に形成されると共に曲率半径が徐変する
凸面鏡で形成されている第２鏡面部とを有して車両の外
面に設けられている車両用鏡において、前記第１鏡面部
は、前記車両の運転者が前記車両の略側部後方を視認可
能に配設され、前記第２鏡面部は、前記第１鏡面部から
遠ざかる方向の曲率半径が前記第１鏡面部と前記第２鏡
面部との境界から遠ざかるにつれて徐々に小さくなるよ
う徐変すると共に、前記境界と平行な方向の曲率半径が
前記第１鏡面部と前記第２鏡面部との境界から遠ざかる
につれて徐々に大きくなるよう徐変して形成されて前記
運転者が前記車両の略側部下方を視認可能に配設されて
いる構造としたものである。According to the second aspect of the present invention, a first mirror surface portion formed of a convex mirror having a constant radius of curvature, and a convex mirror extending from the first mirror surface portion and integrally formed and having a gradually changing radius of curvature. And a second mirror portion formed on the vehicle mirror provided on the outer surface of the vehicle, wherein the first mirror portion allows a driver of the vehicle to visually recognize a substantially rear side portion of the vehicle. And the second mirror surface portion gradually changes such that the radius of curvature in the direction away from the first mirror surface portion gradually decreases as the distance from the boundary between the first mirror surface portion and the second mirror surface portion increases. The radius of curvature in a direction parallel to the boundary is gradually changed so as to gradually increase as the distance from the boundary between the first mirror surface portion and the second mirror surface portion increases, so that the driver can be positioned substantially below the side of the vehicle. The structure is arranged so that one can be seen It is.
【００１３】運転者は、車両用鏡の第１鏡面部により当
該車両の略側部後方を視認し、第２鏡面部により当該車
両の略側部下方を視認する。車両用鏡の第１鏡面部に映
った映像は、一定の割合で湾曲して第２鏡面部へと連な
り、第２鏡面部は、第１鏡面部から遠ざかる方向の曲率
半径が第１鏡面部と第２鏡面部との境界から遠ざかるに
連れて徐々に小さくなることにより、当該方向の視界が
徐々に拡大される。また、第２鏡面部は、第１鏡面部と
の境界と平行な方向の曲率半径が第１鏡面部との境界か
ら遠ざかるに連れて徐々に大きくなることにより、当該
方向の視界が徐々に狭められて映像の圧縮が抑制され
る。これにより、第２鏡面部の映像は、第１鏡面部の映
像と滑らかに連続し、且つ第１鏡面部との境界から遠ざ
かる方向の視界が徐々に拡大される。この結果、第１鏡
面部と第２鏡面部とに映る像は、一定の連続感を有する
こととなり、運転者は、当該車両の略側部後方及び略側
部下方を視認しやすくなる。The driver visually recognizes substantially the rear side of the vehicle by the first mirror surface of the vehicle mirror, and visually recognizes substantially lower side of the vehicle by the second mirror surface. The image reflected on the first mirror surface portion of the vehicle mirror is curved at a fixed rate and continues to the second mirror surface portion, and the second mirror surface portion has a radius of curvature in a direction away from the first mirror surface portion. The field of view in this direction is gradually enlarged by gradually decreasing as the distance from the boundary between the lens and the second mirror surface increases. In addition, the radius of curvature in the direction parallel to the boundary with the first mirror surface gradually increases with distance from the boundary with the first mirror surface, so that the field of view in that direction gradually narrows. The compression of the image is suppressed. Thereby, the image of the second mirror surface portion smoothly continues to the image of the first mirror surface portion, and the field of view in the direction away from the boundary with the first mirror surface portion is gradually enlarged. As a result, the images reflected on the first mirror surface portion and the second mirror surface portion have a certain sense of continuity, and the driver can easily visually recognize the substantially rear portion of the vehicle and the substantially lower portion of the vehicle.
【００１４】請求項３の発明では、前記第２鏡面部は、
前記境界と平行な方向の曲率半径が前記第１曲面部と第
２曲面部との境界から遠ざかるにつれて前記第１鏡面部
の曲率半径よりも徐々に大きくなるように徐変して形成
されている構造としたものである。鏡面体の第２鏡面部
の第１鏡面部との境界と平行な方向の曲率半径が、境界
から遠ざかるに連れて第１鏡面部の曲率半径よりも徐々
に大きくなることにより、第２鏡面部の境界と平行な方
向の像の歪みが抑えられ、第１鏡面部及び第２鏡面部に
映る像は、より良好な連続感が得られる。According to the third aspect of the present invention, the second mirror portion includes:
The radius of curvature in the direction parallel to the boundary is gradually changed so as to become gradually larger than the radius of curvature of the first mirror surface portion as the distance from the boundary between the first curved surface portion and the second curved surface portion increases. It is a structure. The radius of curvature of the second mirror surface portion of the mirror body in a direction parallel to the boundary with the first mirror surface portion gradually increases as the distance from the boundary increases, thereby increasing the second mirror surface portion. Of the image in the direction parallel to the boundary is suppressed, and the images reflected on the first mirror surface portion and the second mirror surface portion can obtain a better sense of continuity.
【００１５】[0015]
【発明の実施の形態】以下本発明の実施の態様を実施例
１、実施例２により説明する。 （実施例１）図１は、本発明に係る鏡面体を適用した車
両のアウトサイドミラー（車両用鏡）を示す。アウトサ
イドミラー２は、助手席側のドア１の外面所定箇所に取
り付けられてドアミラーとされており、運転者が、当該
車両の左側方の視界及び後方の視界を視認し得るように
なっている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to Embodiments 1 and 2. (Embodiment 1) FIG. 1 shows an outside mirror (vehicle mirror) of a vehicle to which a mirror body according to the present invention is applied. The outside mirror 2 is attached to a predetermined position on the outer surface of the door 1 on the passenger seat side to form a door mirror, so that the driver can visually recognize the left field of view and the rear field of the vehicle. .
【００１６】アウトサイドミラー２の鏡面体３は、複合
曲面鏡で、第１鏡面部３ａと、第２鏡面部３ｂとを有
し、第１鏡面部３ａの下側に第２鏡面部３ｂが連続して
一体に形成されている。そして、第１鏡面部３ａと第２
鏡面部３ｂとの境界は、境界線３ｃで示すように略水平
とされている。第１鏡面部３ａは、通常のアウトサイド
ミラー（主鏡）で車両の略側方及び後方を視認するため
のものである。また、第２鏡面部３ｂは、補助ミラー
（補助鏡）で車両の略側方及び下方を認識するためのも
のである。第１鏡面部３ａは、通常のアウトサイドミラ
ーと同様の大きさに設定され、第２鏡面部３ｂは、第１
鏡面部３ａよりも小さく、例えば、１／３程度の大きさ
に設定されている。The mirror 3 of the outside mirror 2 is a compound curved mirror having a first mirror 3a and a second mirror 3b, and the second mirror 3b is provided below the first mirror 3a. It is formed continuously and integrally. Then, the first mirror portion 3a and the second
The boundary with the mirror surface part 3b is substantially horizontal as shown by the boundary line 3c. The first mirror surface portion 3a is for visually recognizing substantially the side and rear of the vehicle with a normal outside mirror (primary mirror). The second mirror surface portion 3b is for recognizing substantially the side and under the vehicle with an auxiliary mirror (auxiliary mirror). The first mirror portion 3a is set to the same size as a normal outside mirror, and the second mirror portion 3b is
The size is set smaller than the mirror surface portion 3a, for example, about 1/3.
【００１７】尚、境界線３ｃは、第１鏡面部３ａと第２
鏡面部３ｂとを運転者が区別し易くするために描かれて
いるもので、必ずしも必要ではない。しかしながら、境
界線３ｃが描かれている方が、第１鏡面部３ａの視界
（通常のバックミラーの視界）と、第２鏡面部３ｂの視
界（下方視界）とを容易に区別することが出来るために
好ましい。更に、境界線３ｃを水平に設定することによ
り、運転者が視認し易くなる。The boundary line 3c is defined by the first mirror surface 3a and the second mirror surface 3a.
It is drawn to make it easier for the driver to distinguish the mirror surface portion 3b from the mirror surface portion 3b, and is not always necessary. However, when the boundary line 3c is drawn, the field of view of the first mirror part 3a (the field of view of a normal rearview mirror) and the field of view of the second mirror part 3b (a lower field of view) can be easily distinguished. Preferred for. Further, by setting the boundary line 3c to be horizontal, the driver can easily recognize the boundary line 3c.
【００１８】鏡面体３の第１鏡面部３ａは、図２に示す
ように一定の曲率半径Ｒ0（例えば、700 mm）の凸面鏡
とされている。点Ｐ0は、当該鏡面体３の中心を示す。
尚、第１鏡面部３ａの曲率半径Ｒ0、及び後述する第２
鏡面部３ｂの各曲率半径の数値は、鏡面体３の曲がり具
合を分かりやすく説明するためのものであり、特に、根
拠があるものではない。The first mirror surface portion 3a of the mirror body 3 is a convex mirror having a constant radius of curvature R 0 (for example, 700 mm) as shown in FIG. The point P 0 indicates the center of the mirror 3.
Note that the radius of curvature R 0 of the first mirror surface portion 3a and the second
The numerical values of the respective radii of curvature of the mirror surface portion 3b are for explaining the degree of bending of the mirror body 3 in an easy-to-understand manner, and are not particularly grounded.
【００１９】第２鏡面部３ｂは、図２に示すように鏡面
体３の中心Ｐ0から遠ざかる方向（下方向）の曲率半径
が、境界線３ｃから遠ざかるに連れて徐々に小さくなる
ように形成されており、例えば、点Ｐ1、Ｐ2、Ｐ3にお
ける各曲率半径が、Ｒ1V（例えば、400 mm）、Ｒ2V（例
えば、300 mm）、Ｒ3V（例えば、200 mm）と徐々に小さ
くなるように変化（徐変）する。更に、第２鏡面部３ｂ
は、境界線３ｃと平行な方向（横方向）の曲率半径が、
当該境界線３ｃから遠ざかる（下方向に向かう）に連れ
て徐々に大きくなるように形成されており、図３乃至図
５に示すように前記各点Ｐ1、Ｐ2、Ｐ3における各曲率
半径が、Ｒ1H（例えば、750 mm）、Ｒ2H（例えば、800
mm）、Ｒ3H（例えば、850 mm）と徐々に大きくなるよう
に変化（徐変）する。The second mirror surface portion 3b is formed as a curvature radius in a direction away from the center P 0 of the mirror body 3 as shown in FIG. 2 (downward direction) becomes gradually smaller as it gets farther away from the boundary line 3c For example, the radii of curvature at points P 1 , P 2 , and P 3 gradually become R 1V (for example, 400 mm), R 2V (for example, 300 mm), and R 3V (for example, 200 mm). Change (gradual change) so that it becomes smaller. Further, the second mirror portion 3b
Has a radius of curvature in a direction (lateral direction) parallel to the boundary line 3c,
It is formed so as to gradually increase as going away from the boundary line 3c (downward), and as shown in FIGS. 3 to 5, each radius of curvature at each of the points P 1 , P 2 , P 3 Are R 1H (for example, 750 mm), R 2H (for example, 800 mm).
mm) and R 3H (for example, 850 mm).
【００２０】即ち、第２鏡面部３ｂは、鏡面体３の中心
Ｐ0から遠ざかる方向（縦方向）の曲率半径が、境界線
３ｃから遠ざかるに連れて第１鏡面部３ａの曲率半径よ
りも徐々に小さくなる（徐変する）ように形成され、境
界線３ｃと平行な方向（横方向）の曲率半径が、当該境
界線３ｃから遠ざかるに連れて第１鏡面部３ａの曲率半
径よりも徐々に大きくなる（徐変する）ように形成され
ている。このようにして複合曲面を有する鏡面体３が形
成されている。[0020] That is, the second mirror surface portion 3b, the radius of curvature in a direction away from the center P 0 of the mirror body 3 (the vertical direction), gradual than the curvature radius of the first mirror surface 3a as it gets farther away from the boundary line 3c And the radius of curvature in the direction (lateral direction) parallel to the boundary 3c gradually becomes larger than the radius of curvature of the first mirror portion 3a as the distance from the boundary 3c increases. It is formed so as to increase (change gradually). Thus, the mirror body 3 having the compound curved surface is formed.
【００２１】以下に作用を説明する。図１においてアウ
トサイドミラー２の鏡面体３の映像は、当該車両の助手
席側の略側方及び後方の視界と、略側方及び下方の視界
における映像を説明するためのもので、前述した図７に
示す映像と同じものである。即ち、右側のハッチ部分
は、車体の映り込みを、当該車体の映り込みと略並行し
て中央付近に上下方向に延びる２本の線は、路面に描か
れている車体に平行な直線を、第１鏡面部３ａの上部に
水平に延びる直線は、地平線を示している。The operation will be described below. In FIG. 1, the image of the mirror 3 of the outside mirror 2 is for explaining the image in the substantially lateral and rear views on the passenger seat side of the vehicle, and in the substantially lateral and lower views. This is the same as the image shown in FIG. That is, the hatch on the right side shows the reflection of the vehicle body, and two lines extending in the vertical direction near the center substantially in parallel with the reflection of the vehicle body are straight lines parallel to the vehicle body drawn on the road surface, A straight line extending horizontally above the first mirror portion 3a indicates a horizon.
【００２２】図１においてアウトサイドミラー２の鏡面
体３の第１鏡面部３ａは、曲率半径が一定の凸面鏡であ
り、通常のアウトサイドミラーと同様の映像となる。従
って、運転者は、鏡面体３の境界線３ｃよりも上部の第
１鏡面部３ａの映像により、当該車両の略左側方及び後
方の視界を視認することが出来る。運転者は、通常走行
時には主としてこの第１鏡面部３ａにより当該車両の左
側及び後方の視界を視認する。In FIG. 1, the first mirror portion 3a of the mirror 3 of the outside mirror 2 is a convex mirror having a constant radius of curvature, and produces an image similar to that of a normal outside mirror. Therefore, the driver can visually recognize the field of view substantially to the left and rear of the vehicle based on the image of the first mirror portion 3a above the boundary 3c of the mirror body 3. The driver visually recognizes the left and rear views of the vehicle mainly through the first mirror surface portion 3a during normal traveling.
【００２３】第２鏡面部３ｂの鏡面体３の中心Ｐ0から
遠ざかる（縦方向に下がる）方向の映像は、境界線３ｃ
から遠ざかるに連れて徐々に圧縮され、下方視界が拡大
される。一方、この第２鏡面部３ｂの境界線３ｃと平行
な方向（横方向）の映像は、境界線３ｃから遠ざかるに
連れて徐々に拡げられる。即ち、横方向の映像の圧縮が
抑えられる。この結果、境界線３ｃの上下において第１
鏡面部３ａと第２鏡面部３ｂに映る像の湾曲が略同じに
なり一定の連続感が得られる。これにより、助手席側の
略側部下方視界が良好に拡大される。An image in a direction away from the center P 0 of the mirror body 3 of the second mirror portion 3b (downward in the vertical direction) is a boundary line 3c.
As it moves away from the camera, it is gradually compressed and the lower field of view is enlarged. On the other hand, an image in a direction (lateral direction) parallel to the boundary 3c of the second mirror surface portion 3b is gradually expanded as the distance from the boundary 3c increases. That is, the compression of the image in the horizontal direction is suppressed. As a result, the first above and below the boundary 3c
The curvatures of the images reflected on the mirror surface portion 3a and the second mirror surface portion 3b become substantially the same, and a constant sense of continuity is obtained. As a result, the field of view substantially below the passenger side on the side of the passenger seat is favorably enlarged.
【００２４】運転者は、主として車庫入れ、或いは幅寄
せ等を行うときに第２鏡面部３ｂにより側部下方視界を
視認する。尚、運転者は、鏡面体３の映像全体を視認し
ながら走行したり、或いは車庫入れ、幅寄せ等を行うこ
とはいうまでもない。アウトサイドミラー２は、第２鏡
面部３ｂが第１鏡面部３ａの下方に形成されていること
で、第２鏡面部により下方視界が拡大される下方視界拡
大タイプのアウトサイドミラーとなり、特に、車高の高
い車両のバックミラーに好適である。The driver visually recognizes the lower side view through the second mirror surface portion 3b mainly when entering the garage or moving the width. It goes without saying that the driver travels while visually recognizing the entire image of the mirror body 3, or enters the garage, shifts the width, and the like. Since the outside mirror 2 has the second mirror surface portion 3b formed below the first mirror surface portion 3a, the outside mirror 2 becomes an outside mirror of a lower visibility expansion type in which the lower visibility is enlarged by the second mirror surface portion. It is suitable for a rearview mirror of a vehicle having a high vehicle height.
【００２５】第２鏡面部３ｂに示す点線は、図７に示す
従来の鏡面体１１の補助鏡面部１１ｂによる映像を示し
ている。実線で示す本発明の鏡面体３による映像と点線
で示す従来の鏡面体１１による映像とから明らかなよう
に、本願発明における側部下方視界は、境界線３ｃから
遠ざかる方向（下方向）の視界が拡大され、境界線３ｃ
と平行な方向（横方向）の視界の拡大が抑えられたもの
となり、極めて良好な映像を得ることができる。 （実施例２）図６においてアウトサイドミラー５の鏡面
体６は、助手席側のドア（図示せず）に取り付けられて
おり、運転者が当該車両の左側及び後方の視界を視認し
得るようになっている。鏡面体６は、第１鏡面部６ａの
側方（外側）に第２鏡面部６ｂが一体に連設して形成さ
れており、これらの鏡面部６ａと６ｂとの境界線６ｃ
は、上下方向に配置されている。A dotted line shown in the second mirror portion 3b shows an image of the conventional mirror 11 shown in FIG. 7 by the auxiliary mirror portion 11b. As is clear from the image of the mirror 3 of the present invention shown by the solid line and the image of the conventional mirror 11 shown by the dotted line, the lower side view in the present invention is a view away from the boundary 3c (downward). Is enlarged and the boundary 3c
The expansion of the field of view in the direction (lateral direction) parallel to the above is suppressed, and an extremely good image can be obtained. (Embodiment 2) In FIG. 6, the mirror 6 of the outside mirror 5 is attached to a door (not shown) on the passenger side so that the driver can visually recognize the left and rear views of the vehicle. It has become. The mirror body 6 has a second mirror surface portion 6b integrally formed on the side (outside) of the first mirror surface portion 6a, and a boundary line 6c between the mirror surface portions 6a and 6b.
Are arranged vertically.
【００２６】第１鏡面部６ａは、実施例１の鏡面体３の
第１鏡面部３ａと同様に曲率半径が一定の凸面鏡とさ
れ、第２鏡面部６ｂは、鏡面部３ｂと同様に鏡面体６の
中心から遠ざかる方向の曲率半径が境界線６ｃから遠ざ
かる（外側方向）に連れて徐々に小さくなると共に、境
界線６ｃと平行な方向（上下方向）の曲率半径が当該境
界線６ｃから遠ざかるに連れて徐々に大きくなるような
凸面鏡とされている。これにより、第２鏡面部６ｂの映
像を上下方向の歪みを抑え、外側方の視界を拡大するこ
とが出来る。The first mirror surface portion 6a is a convex mirror having a constant radius of curvature similarly to the first mirror surface portion 3a of the mirror surface member 3 of the first embodiment, and the second mirror surface portion 6b is a mirror surface member similar to the mirror surface portion 3b. The radius of curvature in the direction away from the center of 6 gradually decreases with increasing distance (outward) from the boundary line 6c, and the radius of curvature in the direction parallel to the boundary line 6c (vertical direction) moves away from the boundary line 6c. It is a convex mirror that gradually increases in size. Thereby, distortion of the image of the second mirror surface portion 6b in the vertical direction can be suppressed, and the outward field of view can be enlarged.
【００２７】尚、実施例１においては、助手席側の下方
視界を拡大するアウトサイドミラー（ドアミラー）２に
ついて記述したが、これに限るものではなく、運転席側
のアウトサイドミラー（ドアミラー）も前記助手席側の
アウトサイドミラー２と同様に形成して運転席側の下方
視界を拡大するようにしても良い。運転席側の下方視界
は、助手席側の下方視界と異なり、運転者が窓から顔を
出して直接視認することが可能であり、必ずしも前記ア
ウトサイドミラーにより下方視界を拡大する必要はな
い。しかしながら、運転者が前方を向いた状態で下方を
視認することが出来ること、雨天の際等に窓から顔を出
すことなく下方を視認することが出来る等の利点があ
る。In the first embodiment, the outside mirror (door mirror) 2 for enlarging the lower field of view on the passenger seat side is described. However, the present invention is not limited to this, and the outside mirror (door mirror) on the driver seat side is also provided. It may be formed in the same manner as the outside mirror 2 on the passenger seat side so as to enlarge the downward view on the driver seat side. The lower field of view on the driver's seat side is different from the lower field of view on the passenger seat side, and the driver can directly see his / her face from the window and visually recognize the lower field of view. However, there are advantages such as that the driver can visually recognize the lower part while facing forward, and that the driver can visually recognize the lower part without coming out of the window in the case of rainy weather.
【００２８】[0028]
【発明の効果】以上説明したように請求項１の発明で
は、第１鏡面部に映った映像は、一定の割合で湾曲して
第２鏡面部へと連なり、第２鏡面部は、第１鏡面部との
境界から遠ざかる方向の視界が拡大され、境界と平行な
方向の映像の圧縮が抑制されることで、第２鏡面部の映
像は、第１鏡面部の映像と滑らかに連続する。これによ
り鏡面体に映る像は、境界から遠ざかる方向の視界が拡
大され、且つ境界の両側の像の湾曲が略同等となり、一
定の連続感が得られる。この結果、使用者の慣れを殆ど
必要とせずに単一の曲面の鏡面体と同等の感覚で使用す
ることが出来る。As described above, according to the first aspect of the present invention, the image reflected on the first mirror surface is curved at a fixed rate and continues to the second mirror surface, and the second mirror surface is connected to the first mirror surface. The field of view in the direction away from the boundary with the mirror surface portion is enlarged, and the compression of the image in the direction parallel to the boundary is suppressed, so that the image of the second mirror surface portion smoothly continues to the image of the first mirror surface portion. As a result, the field of view of the image reflected on the specular body in the direction away from the boundary is enlarged, and the curvatures of the images on both sides of the boundary become substantially equal, so that a certain sense of continuity is obtained. As a result, it can be used with almost the same feeling as a single curved mirror with little or no user's familiarity.
【００２９】請求項２の発明では、運転者は、車両用鏡
の第１鏡面部により当該車両の略側部後方を視認し、第
２鏡面部により当該車両の略側部下方を視認する。車両
用鏡の第１鏡面部に映った映像は、一定の割合で湾曲し
て第２鏡面部へと連なり、第２鏡面部は、第１鏡面部と
の境界から遠ざかる方向の視界が拡大され、境界と平行
な方向の映像の圧縮が抑制されることで、第２鏡面部の
映像は、第１鏡面部の映像と滑らかに連続する。これに
より鏡面体に映る像は、境界から遠ざかる方向の視界が
拡大され、且つ境界の両側の像の湾曲が略同等となり、
一定の連続感が得られる。この結果、車両用鏡の第１鏡
面部と第２鏡面部とに映る像は、一定の連続感を有する
こととなり、運転者は、当該車両の略側部後方及び略側
部下方を視認しやすくなり、特に車高の高い車両に好適
である。また、運転者は、慣れを殆ど必要とせずに単一
曲面の車両用鏡と同等の感覚で視認することが出来る。According to the second aspect of the present invention, the driver visually recognizes substantially the rear side of the vehicle by the first mirror surface portion of the vehicle mirror, and visually recognizes substantially the lower side of the vehicle by the second mirror surface portion. The image reflected on the first mirror surface portion of the vehicle mirror is curved at a constant rate and continues to the second mirror surface portion, and the second mirror surface portion has an increased field of view in a direction away from the boundary with the first mirror surface portion. Since the compression of the image in the direction parallel to the boundary is suppressed, the image of the second mirror portion smoothly continues to the image of the first mirror portion. As a result, the image reflected on the specular body has an increased field of view in a direction away from the boundary, and the curvatures of the images on both sides of the boundary are substantially equal.
A constant sense of continuity is obtained. As a result, the images reflected on the first mirror surface portion and the second mirror surface portion of the vehicle mirror have a certain sense of continuity, and the driver visually recognizes substantially the rear side of the vehicle and the substantially lower side thereof. This is particularly suitable for vehicles having a high vehicle height. Further, the driver can visually recognize the vehicle with almost the same feeling as a vehicle mirror having a single curved surface with almost no need for familiarity.
【００３０】請求項３の発明では、鏡面体の第２鏡面部
の第１鏡面部との境界と平行な方向の曲率半径が、境界
から遠ざかるに連れて第１鏡面部の曲率半径よりも徐々
に大きくなることで、第２鏡面部の境界と平行な方向の
像の歪みが抑えられ、鏡面体に映る像は、より良好な連
続感が得られる。According to the third aspect of the present invention, the radius of curvature of the second mirror surface portion of the mirror body in a direction parallel to the boundary with the first mirror surface portion gradually increases as the distance from the boundary increases. , The distortion of the image in the direction parallel to the boundary of the second mirror portion is suppressed, and a better sense of continuity is obtained for the image reflected on the mirror body.
【図１】本発明に係る複合曲面を有する鏡面体を適用し
た実施例１のドアミラー（車両用鏡）の運転席から見た
正面図である。FIG. 1 is a front view of a door mirror (vehicle mirror) of a first embodiment to which a mirror having a compound curved surface according to the present invention is applied, as viewed from a driver's seat.
【図２】図１の矢線II−IIに沿う断面図である。FIG. 2 is a sectional view taken along the line II-II in FIG.
【図３】図１の矢線III−IIIに沿う断面図である。FIG. 3 is a sectional view taken along the line III-III in FIG. 1;
【図４】図１の矢線IV−IVに沿う断面図である。FIG. 4 is a sectional view taken along the line IV-IV in FIG. 1;
【図５】図１の矢線Ｖ−Ｖに沿う断面図である。FIG. 5 is a sectional view taken along the line VV in FIG. 1;
【図６】本発明に係る複合曲面を有する鏡面体を適用し
た実施例２のドアミラーの運転席から見た正面図であ
る。FIG. 6 is a front view of a door mirror of Example 2 to which a mirror body having a compound curved surface according to the present invention is applied, as viewed from a driver's seat.
【図７】従来の複合曲面を有する鏡面体を適用したドア
ミラーの運転席から見た正面図である。FIG. 7 is a front view of a conventional door mirror to which a mirror having a compound curved surface is applied, viewed from a driver's seat.
【図８】図７の矢線VIII−VIIIに沿う断面図である。8 is a sectional view taken along the line VIII-VIII in FIG.
【図９】図７の矢線IX−IXに沿う断面図である。FIG. 9 is a sectional view taken along the line IX-IX in FIG. 7;
【図１０】図７の矢線Ｘ−Ｘに沿う断面図である。FIG. 10 is a sectional view taken along the line XX in FIG. 7;
【図１１】図７の矢線XI−XIに沿う断面図である。FIG. 11 is a sectional view taken along the line XI-XI in FIG. 7;
１ ドア ２、５ アウトサイドミラー（ドアミラー） ３、６ 鏡面体（複合曲面鏡） ３ａ、６ａ 第１鏡面部 ３ｂ、６ｂ 第２鏡面部 ３ｃ、６ｃ 境界線 DESCRIPTION OF SYMBOLS 1 Door 2, 5 Outside mirror (door mirror) 3, 6 Mirror (composite curved mirror) 3a, 6a 1st mirror 3b, 6b 2nd mirror 3c, 6c Boundary line
Claims (3)
る第１鏡面部と、前記第１鏡面部から延設して一体に形
成されると共に曲率半径が徐変する凸面鏡で形成されて
いる第２鏡面部とを有する鏡面体において、 前記第２鏡面部は、前記第１鏡面部から遠ざかる方向の
曲率半径が前記第１鏡面部と前記第２鏡面部との境界か
ら遠ざかるにつれて徐々に小さくなるよう徐変すると共
に、前記境界と平行な方向の曲率半径が前記第１鏡面部
と前記第２鏡面部との境界から遠ざかるにつれて徐々に
大きくなるよう徐変して形成されていることを特徴とす
る鏡面体。1. A first mirror portion formed of a convex mirror having a constant radius of curvature, and a convex mirror extending from the first mirror portion and integrally formed and having a gradually changing radius of curvature. In the mirror body having a second mirror surface portion, the second mirror surface portion has a radius of curvature in a direction away from the first mirror surface portion gradually decreases as the distance from the boundary between the first mirror surface portion and the second mirror surface portion increases. And a radius of curvature in a direction parallel to the boundary gradually increases as the distance from the boundary between the first mirror surface portion and the second mirror surface portion increases. Mirror body.
る第１鏡面部と、前記第１鏡面部から延設して一体に形
成されると共に曲率半径が徐変する凸面鏡で形成されて
いる第２鏡面部とを有して車両の外面に設けられている
車両用鏡において、 前記第１鏡面部は、前記車両の運転者が前記車両の略側
部後方を視認可能に配設され、 前記第２鏡面部は、前記第１鏡面部から遠ざかる方向の
曲率半径が前記第１鏡面部と前記第２鏡面部との境界か
ら遠ざかるにつれて徐々に小さくなるよう徐変すると共
に、前記境界と平行な方向の曲率半径が前記第１鏡面部
と前記第２鏡面部との境界から遠ざかるにつれて徐々に
大きくなるよう徐変して形成されて前記運転者が前記車
両の略側部下方を視認可能に配設されていることを特徴
とする車両用鏡。2. A first mirror surface portion formed of a convex mirror having a constant radius of curvature, and a convex mirror extending from the first mirror surface portion and integrally formed and having a gradually changing radius of curvature. A vehicle mirror having a second mirror surface portion and provided on an outer surface of the vehicle, wherein the first mirror surface portion is disposed so that a driver of the vehicle can visually recognize a substantially rear side portion of the vehicle, The second mirror surface portion is gradually changed such that a radius of curvature in a direction away from the first mirror surface portion gradually decreases as the distance from the boundary between the first mirror surface portion and the second mirror surface portion increases, and is parallel to the boundary. The radius of curvature in any direction is gradually changed so as to gradually increase as the distance from the boundary between the first mirror surface portion and the second mirror surface portion increases, so that the driver can visually recognize a substantially lower side portion of the vehicle. A vehicle mirror, which is provided.
向の曲率半径が前記第１曲面部と第２曲面部との境界か
ら遠ざかるにつれて前記第１鏡面部の曲率半径よりも徐
々に大きくなるように徐変して形成されていることを特
徴とする請求項１に記載の鏡面体。3. The second mirror surface portion, as the radius of curvature in a direction parallel to the boundary becomes farther from the boundary between the first curved surface portion and the second curved surface portion, gradually becomes larger than the radius of curvature of the first mirror surface portion. 2. The mirror body according to claim 1, wherein the mirror body is formed so as to gradually change so as to become larger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27600796A JPH10123308A (en) | 1996-10-18 | 1996-10-18 | Mirror surface body and mirror for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27600796A JPH10123308A (en) | 1996-10-18 | 1996-10-18 | Mirror surface body and mirror for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10123308A true JPH10123308A (en) | 1998-05-15 |
Family
ID=17563488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27600796A Withdrawn JPH10123308A (en) | 1996-10-18 | 1996-10-18 | Mirror surface body and mirror for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10123308A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003002116A (en) * | 2001-06-19 | 2003-01-08 | Dainippon Printing Co Ltd | Mirror with hologram for vehicle |
| JP2011079466A (en) * | 2009-10-08 | 2011-04-21 | Honda Motor Co Ltd | Door mirror for vehicle |
| JP2011230631A (en) * | 2010-04-27 | 2011-11-17 | Honda Motor Co Ltd | Rear under mirror |
-
1996
- 1996-10-18 JP JP27600796A patent/JPH10123308A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003002116A (en) * | 2001-06-19 | 2003-01-08 | Dainippon Printing Co Ltd | Mirror with hologram for vehicle |
| JP4596445B2 (en) * | 2001-06-19 | 2010-12-08 | 大日本印刷株式会社 | Mirror with hologram for vehicle |
| JP2011079466A (en) * | 2009-10-08 | 2011-04-21 | Honda Motor Co Ltd | Door mirror for vehicle |
| JP2011230631A (en) * | 2010-04-27 | 2011-11-17 | Honda Motor Co Ltd | Rear under mirror |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20040106 |