JP5571401B2 - Reflector - Google Patents
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- JP5571401B2 JP5571401B2 JP2010020991A JP2010020991A JP5571401B2 JP 5571401 B2 JP5571401 B2 JP 5571401B2 JP 2010020991 A JP2010020991 A JP 2010020991A JP 2010020991 A JP2010020991 A JP 2010020991A JP 5571401 B2 JP5571401 B2 JP 5571401B2
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Description
本発明は、反射器に係り、例えば自動車の後部あるいは道路の路肩などに設けられる反射器に関する。 The present invention relates to a reflector, for example, a reflector provided at the rear of an automobile or a road shoulder.
従来、反射器においては、多数の反射エレメントが略平面状に配列されている。反射エレメントは、立方体をなす六面のうち隣接する三面からなる鏡面で構成されていて、これらの鏡面が正面から見たときに正六角形の形状となるように配置されている（例えば特許文献１参照）。 Conventionally, in a reflector, a large number of reflective elements are arranged in a substantially planar shape. The reflective element is composed of mirror surfaces composed of three adjacent surfaces among the six surfaces forming a cube, and these mirror surfaces are arranged in a regular hexagonal shape when viewed from the front (for example, Patent Document 1). reference).
ここで、従来の反射器においては反射エレメントをなす鏡面が平面で成型されていることが前提であった。しかしながら、例えば反射エレメントが樹脂製である場合には、成型時の樹脂のヒケや、金型の精度等によって、鏡面に凹凸を生じてしまうおそれがあった。また、例えば反射エレメントが金属製である場合にも、作成時の加工によって鏡面に凹凸を生じてしまうおそれがあった。このように鏡面に凹凸が生じていると、設計時の性能予測よりも反射光の明るさが低い反射器になってしまうのが実状である。
このため本発明の課題は、反射光の明るさを高めることのできる反射器を提供することである。
Here, in the conventional reflector, it was assumed that the mirror surface forming the reflective element was formed as a flat surface. However, for example, when the reflective element is made of resin, there is a possibility that the mirror surface may be uneven due to sink marks of the resin at the time of molding, accuracy of the mold, or the like. Further, for example, even when the reflective element is made of metal, there is a possibility that the mirror surface may be uneven as a result of processing during creation. If the mirror surface is uneven as described above, the actual situation is that the brightness of the reflected light is lower than the performance prediction at the time of design.
For this reason, the subject of this invention is providing the reflector which can raise the brightness of reflected light.
請求項１記載の発明は、
略平面状に配列された多数の反射エレメントを有する反射器において、
前記反射エレメントは、
正面視で正六角形をなす仮想的な立方体の六平面のうち、互いに隣接する三平面をそれぞれ第一基準面、第二基準面及び第三基準面とすると、前記第一基準面に沿う第一鏡面と、前記第二基準面に沿う第二鏡面と、前記第三基準面に沿う第三鏡面とを備え、
前記第一鏡面、前記第二鏡面及び前記第三鏡面は、互いに隣接していて、
前記第一鏡面が前記第一基準面に対して外側に膨らむ曲面に形成されている場合は、前記第二鏡面は前記第二基準面に対して内側に膨らむ曲面に形成されるとともに、前記第三鏡面は前記第三基準面に対して内側に膨らむ曲面に形成され、
前記第一鏡面が前記第一基準面に対して内側に膨らむ曲面に形成されている場合は、前記第二鏡面は前記第二基準面に対して外側に膨らむ曲面に形成されるとともに、前記第三鏡面は前記第三基準面に対して外側に膨らむ曲面に形成されており、
前記第一基準面の一対の対角線のうち、一方の対角線が前記第二基準面、前記第三基準面との交点を通過し、他方の対角線が上下方向に延在するように、前記第一基準面、前記第二基準面及び前記第三基準面が配置されていることを特徴としている。
The invention described in claim 1
In a reflector having a number of reflective elements arranged in a substantially planar shape,
The reflective element is
Of the six planes of a virtual cube that forms a regular hexagon when viewed from the front, if the three planes adjacent to each other are the first reference plane, the second reference plane, and the third reference plane, respectively, the first along the first reference plane A mirror surface, a second mirror surface along the second reference surface, and a third mirror surface along the third reference surface,
The first mirror surface, the second mirror surface and the third mirror surface are adjacent to each other;
When the first mirror surface is formed in a curved surface that swells outward with respect to the first reference surface, the second mirror surface is formed in a curved surface that swells inward with respect to the second reference surface, and The three mirror surfaces are formed into curved surfaces that swell inward with respect to the third reference surface,
When the first mirror surface is formed in a curved surface that swells inward with respect to the first reference surface, the second mirror surface is formed in a curved surface that swells outward with respect to the second reference surface, and The three mirror surfaces are formed into curved surfaces that swell outward with respect to the third reference surface ,
Of the pair of diagonal lines of the first reference plane, the first diagonal line passes through the intersection of the second reference plane and the third reference plane, and the other diagonal line extends in the vertical direction. A reference plane, the second reference plane, and the third reference plane are arranged .
請求項２記載の発明は、請求項１記載の反射器において、
前記第一鏡面、前記第二鏡面及び前記第三鏡面は、頂点と基準面との距離が前記正六角形の高さの１／２３００となる曲面にそれぞれ形成されていることを特徴としている。
請求項３記載の発明は、請求項１又は２記載の反射器において、
前記第一鏡面、前記第二鏡面及び前記第三鏡面は、正規分布曲線もしくは放物線を基にした曲面、球面または楕円曲面であることを特徴としている。
The invention described in claim 2 is the reflector according to claim 1,
The first mirror surface, the second mirror surface, and the third mirror surface are each formed as a curved surface in which the distance between the apex and the reference surface is 1/2300 of the height of the regular hexagon .
The invention according to claim 3 is the reflector according to claim 1 or 2,
The first mirror surface, the second mirror surface, and the third mirror surface are characterized by being a normal distribution curve or a curved surface based on a parabola, a spherical surface, or an elliptical curved surface.
本発明者は、反射エレメントをなす三つの鏡面のそれぞれを曲面とし、さらに一つの鏡面の湾曲方向と、他の二つの鏡面の湾曲方向とを逆方向にすれば、反射光の明るさが高められることを見出した。つまり、請求項１記載の発明のように、第一鏡面が第一基準面に対して外側に膨らむ曲面に形成されている場合は、第二鏡面は第二基準面に対して内側に膨らむ曲面に形成されるとともに、第三鏡面は第三基準面に対して内側に膨らむ曲面に形成されていたり、第一鏡面が第一基準面に対して内側に膨らむ曲面に形成されている場合は、第二鏡面は第二基準面に対して外側に膨らむ曲面に形成されるとともに、第三鏡面は第三基準面に対して外側に膨らむ曲面に形成されていれば、反射光の明るさを高めることが可能となる。 The present inventor can increase the brightness of the reflected light by making each of the three mirror surfaces forming the reflecting element a curved surface, and further by reversing the bending direction of one mirror surface and the bending direction of the other two mirror surfaces. I found out that That is, as in the first aspect of the invention, when the first mirror surface is formed in a curved surface that swells outward with respect to the first reference surface, the second mirror surface is a curved surface that swells inward with respect to the second reference surface. When the third mirror surface is formed in a curved surface that swells inward with respect to the third reference surface, or when the first mirror surface is formed in a curved surface that swells inward with respect to the first reference surface, If the second mirror surface is formed in a curved surface that swells outward with respect to the second reference surface, and the third mirror surface is formed in a curved surface that swells outward with respect to the third reference surface, the brightness of the reflected light is increased. It becomes possible.
また、第一基準面の一対の対角線のうち、一方の対角線が第二基準面、第三基準面との交点を通過し、他方の対角線が上下方向に延在するように、反射エレメントが配置されているので、反射光の配光パターンは上下方向に沿った形状となる。例えば自動車用反射器の規格では、光軸から僅かな角度だけ上方のポイントが基準位置となるが、上述のように反射光の配光パターンが上下方向に沿った形状であれば、各鏡面における基準面からの膨らみ具合を調整するといった簡便な方法で基準位置の明るさを調整することができる。 In addition , the reflective element is arranged so that one of the pair of diagonal lines of the first reference plane passes through the intersection with the second reference plane and the third reference plane, and the other diagonal line extends in the vertical direction. Therefore, the light distribution pattern of the reflected light has a shape along the vertical direction. For example, in the reflector standard for automobiles, a point slightly above the optical axis is the reference position. However, as described above, if the light distribution pattern of reflected light is a shape along the vertical direction, The brightness of the reference position can be adjusted by a simple method such as adjusting the degree of swelling from the reference surface.
以下、本実施形態に係る反射器について説明する。図１は本実施形態に係る反射器の概略構成を示す部分拡大図である。図１に示すように、反射器１の表面には、多数の反射エレメント２が略平面状に配列されている。 Hereinafter, the reflector according to the present embodiment will be described. FIG. 1 is a partially enlarged view showing a schematic configuration of a reflector according to the present embodiment. As shown in FIG. 1, on the surface of the reflector 1, a large number of reflective elements 2 are arranged in a substantially planar shape.
図２は、反射エレメント２の概略構成を示す説明図であり、（ａ）は正面図、（ｂ）は下面図である。なお、図２では反射エレメント２の基準となる第一基準面３１、第二基準面３２及び第三基準面３３を二点鎖線で示している。第一基準面３１、第二基準面３２及び第三基準面３３は、正六角形をなす仮想的な六平面のうち、互いに隣接する三平面であり、互いに直交する位置に配置されている。そして、第一基準面３１の一対の対角線３１ａ，３１ｂのうち、一方の対角線３１ａが第二基準面３２、第三基準面３３との交点を通過し、他方の対角線３１ｂが上下方向に延在するように、第一基準面３１、第二基準面３２及び第三基準面３３が配置されている。さらに、第一基準面３１、第二基準面３２及び第三基準面３３は、交点が後方となって、開放部分が前方となるように配置されている。そして、反射エレメント２の光軸Ｌは、第一基準面３１、第二基準面３２及び第三基準面３３の交点から、前方に向けて延在している。そして、反射エレメント２には、第一基準面３１に沿う第一鏡面２１と、第二基準面３２に沿う第二鏡面２２と、第三基準面３３に沿う第三鏡面２３とが備えられている。第一鏡面２１、第二鏡面２２及び第三鏡面２３は、互いに隣接している。これら第一鏡面２１、第二鏡面２２及び第三鏡面２３は、図面上第一基準面３１、第二基準面３２及び第三基準面３３よりも小さく、なおかつ各基準面３１，３２，３３から離れているように図示されているが、これは便宜上の表現であり、実際は各基準面３１，３２，３３と同じ外形に設定されている。 2A and 2B are explanatory views showing a schematic configuration of the reflective element 2, wherein FIG. 2A is a front view and FIG. 2B is a bottom view. In FIG. 2, the first reference surface 31, the second reference surface 32, and the third reference surface 33 that serve as a reference for the reflective element 2 are indicated by two-dot chain lines. The first reference plane 31, the second reference plane 32, and the third reference plane 33 are three adjacent planes among virtual six planes forming a regular hexagon, and are arranged at positions orthogonal to each other. Of the pair of diagonal lines 31a and 31b of the first reference plane 31, one diagonal line 31a passes through the intersection with the second reference plane 32 and the third reference plane 33, and the other diagonal line 31b extends in the vertical direction. As shown, the first reference surface 31, the second reference surface 32, and the third reference surface 33 are arranged. Furthermore, the first reference surface 31, the second reference surface 32, and the third reference surface 33 are arranged so that the intersection is behind and the open part is front. The optical axis L of the reflective element 2 extends forward from the intersection of the first reference surface 31, the second reference surface 32, and the third reference surface 33. The reflective element 2 includes a first mirror surface 21 along the first reference surface 31, a second mirror surface 22 along the second reference surface 32, and a third mirror surface 23 along the third reference surface 33. Yes. The first mirror surface 21, the second mirror surface 22, and the third mirror surface 23 are adjacent to each other. The first mirror surface 21, the second mirror surface 22, and the third mirror surface 23 are smaller than the first reference surface 31, the second reference surface 32, and the third reference surface 33 in the drawing, and from the reference surfaces 31, 32, 33. Although illustrated as being separated, this is an expression for convenience, and is actually set to the same outer shape as each of the reference surfaces 31, 32, and 33.
図３は、第一鏡面２１、第二鏡面２２及び第三鏡面２３の形状を表す説明図であり、（ａ）は図２のａ−ａ切断線から見た第一鏡面２１の断面形状、（ｂ）は図２のｂ−ｂ切断線から見た第二鏡面２２の断面形状、（ｃ）は図２のｃ−ｃ切断線から見た第三鏡面２３の断面形状を示している。以下の説明において、「内側」とは各基準面３１，３２，３３に対して光軸側のことであり、「外側」とは各基準面３１，３２，３３に対して光軸側とは反対側のことである。
図３に示すように、第一鏡面２１は、第一基準面３１に対して外側に膨らむ曲面に形成されている。具体的には、第一鏡面２１は、その周縁部が内側に向けて凸となり、中央部分が外側に向けて凸となる、例えば正規分布曲線を基にした曲面となっている。
一方、第二鏡面２２は第二基準面３２に対して内側に膨らむ曲面に形成され、第三鏡面２３は第三基準面３３に対して内側に膨らむ曲面に形成されている。具体的には、第二鏡面２２及び第三鏡面２３は、その周縁部が外側に向けて凸となり、中央部分が内側に向けて凸となる、例えば正規分布曲線を基にした曲面となっている。
FIG. 3 is an explanatory diagram showing the shapes of the first mirror surface 21, the second mirror surface 22, and the third mirror surface 23, and (a) is a cross-sectional shape of the first mirror surface 21 as viewed from the aa cutting line in FIG. (B) shows the cross-sectional shape of the second mirror surface 22 as seen from the bb cutting line in FIG. 2, and (c) shows the cross-sectional shape of the third mirror surface 23 as seen from the cc cutting line in FIG. In the following description, “inside” refers to the optical axis side with respect to each reference plane 31, 32, 33, and “outside” refers to the optical axis side with respect to each reference plane 31, 32, 33. On the other side.
As shown in FIG. 3, the first mirror surface 21 is formed in a curved surface that swells outward with respect to the first reference surface 31. Specifically, the first mirror surface 21 is a curved surface based on, for example, a normal distribution curve, in which the peripheral portion is convex toward the inside and the center portion is convex toward the outside.
On the other hand, the second mirror surface 22 is formed in a curved surface that swells inward with respect to the second reference surface 32, and the third mirror surface 23 is formed in a curved surface that swells inward with respect to the third reference surface 33. Specifically, the second mirror surface 22 and the third mirror surface 23 are curved surfaces based on, for example, a normal distribution curve, the peripheral portion of which is convex outward and the central portion thereof is convex inward. Yes.
次に、本実施形態の作用について具体例を挙げて説明する。
図２に示すように反射器１の反射エレメント２は、正面から見て正六角形となっているが、この正六角形の高さＨ１は２．３ｍｍに設定されている。また、各鏡面２１，２２，２３の頂点と、各基準面３１，３２，３３との距離Ｈ２は、１×１０−３ｍｍに設定されている。そして、光軸Ｌと各基準面３１，３２，３３とがなす角度が３５．２９３度、各基準面３１，３２，３３の法線のうち、隣り合う法線同士がなす角度が１２０度に設定されている。
Next, the operation of this embodiment will be described with a specific example.
As shown in FIG. 2, the reflective element 2 of the reflector 1 is a regular hexagon when viewed from the front, and the height H1 of the regular hexagon is set to 2.3 mm. Further, the distance H2 between the vertexes of the mirror surfaces 21, 22, 23 and the reference surfaces 31, 32, 33 is set to 1 × 10 −3 mm. The angle formed by the optical axis L and each of the reference surfaces 31, 32, 33 is 35.293 degrees, and the normal formed by the adjacent normal lines among the normal lines of the respective reference surfaces 31, 32, 33 is 120 degrees. Is set.
そして、図４に示すように反射器１の正面に光源１００を配置して、光源１００から反射器１に対して光を照射する。この光を反射した反射器１の配光パターンは図５に示すように上下方向に沿った配光パターンＰ１となる。図５において、色味の濃い部分が明るい部分を示し、薄い部分が暗い部分を示している。 And as shown in FIG. 4, the light source 100 is arrange | positioned in front of the reflector 1, and light is irradiated with respect to the reflector 1 from the light source 100. FIG. The light distribution pattern of the reflector 1 reflecting this light is a light distribution pattern P1 along the vertical direction as shown in FIG. In FIG. 5, a dark portion indicates a bright portion, and a thin portion indicates a dark portion.
比較例として、全ての反射面が同方向に膨らんでいる反射器に対して同条件で光を照射すると、配光パターンは図６に示すように、ある程度拡散した配光パターンＰ２となる。 As a comparative example, when light is irradiated under the same conditions to a reflector whose all reflecting surfaces swell in the same direction, the light distribution pattern becomes a light distribution pattern P2 diffused to some extent as shown in FIG.
ここで、自動車用反射器の規格では、光軸Ｌから僅かな角度だけ上方のポイントが基準位置となる。図４に示すように欧州や日本の規格だと観測角度は０．３３度であり、米国の規格だと観測角度は０．２度である。このような場合、反射光の配光パターンＰ１が上下方向に沿った形状となっていると、各鏡面２１，２２，２３における基準面３１，３２，３３からの膨らみ具合を調整するといった簡便な方法で基準位置の明るさを調整することができる。 Here, in the standard of the reflector for automobiles, a point slightly above the optical axis L is a reference position. As shown in FIG. 4, the observation angle is 0.33 degrees for European and Japanese standards, and the observation angle is 0.2 degrees for US standards. In such a case, when the light distribution pattern P1 of the reflected light has a shape extending in the vertical direction, it is easy to adjust the degree of swelling from the reference surfaces 31, 32, 33 on each of the mirror surfaces 21, 22, 23. The brightness of the reference position can be adjusted by the method.
そして、第一鏡面２１、第二鏡面２２及び第三鏡面２３がそれぞれ平面である場合の設計時の予測光度を１００％とすると、製造後、不規則に各鏡面２１，２２，２３に凹凸が形成されている場合の最も明るい箇所の光度は５０．４６％となって、観測角度０．２度の光度は０．５５％となる。しかしながら、本実施形態の反射器１のように、第一鏡面２１が第一基準面３１に対して外側に膨らむ曲面に形成され、第二鏡面２２が第二基準面３２に対して内側に膨らむ曲面に形成され、第三鏡面２３が第三基準面３３に対して内側に膨らむ曲面に形成されていると、最も明るい箇所の光度は２０２．４４％となって、観測角度０．２度の光度は２７．６９％となる。すなわち従来よりも反射光の明るさを高めることが可能となる。 Then, assuming that the predicted luminous intensity at the time of designing when the first mirror surface 21, the second mirror surface 22, and the third mirror surface 23 are flat surfaces, irregularities are irregularly formed on each mirror surface 21, 22, 23 after manufacturing. The luminous intensity of the brightest part when formed is 50.46%, and the luminous intensity at an observation angle of 0.2 degrees is 0.55%. However, like the reflector 1 of the present embodiment, the first mirror surface 21 is formed in a curved surface that swells outward with respect to the first reference surface 31, and the second mirror surface 22 swells inward with respect to the second reference surface 32. If the third mirror surface 23 is formed into a curved surface and is curved into a curved surface that swells inward with respect to the third reference surface 33, the luminous intensity of the brightest part is 202.44%, and the observation angle is 0.2 degrees. The luminous intensity is 27.69%. That is, the brightness of the reflected light can be increased as compared with the conventional case.
なお、本発明は上記実施形態に限らず適宜変更可能であるのは勿論である。
例えば、本実施形態では、第一鏡面２１が、第一基準面３１に対して外側に膨らむ曲面に形成され、第二鏡面２２が第二基準面３２に対して内側に膨らむ曲面に形成され、第三鏡面２３が第三基準面３３に対して内側に膨らむ曲面に形成されている場合を例示して説明したが、第一鏡面２１と、第二鏡面２２及び第三鏡面２３とが反対側に膨らんでいればよく、上述した形状に限定されない。具体的には、図７に示すように、第一鏡面２１ａが第一基準面３１に対して内側に膨らむ曲面に形成されている場合には、第二鏡面２２ａは第二基準面３２に対して外側に膨らむ曲面に形成されるとともに、第三鏡面２３ａは第三基準面３３に対して外側に膨らむ曲面に形成されている。
Of course, the present invention is not limited to the above-described embodiment and can be modified as appropriate.
For example, in the present embodiment, the first mirror surface 21 is formed in a curved surface that swells outward with respect to the first reference surface 31, and the second mirror surface 22 is formed in a curved surface that swells inward with respect to the second reference surface 32. Although the case where the third mirror surface 23 is formed as a curved surface that swells inward with respect to the third reference surface 33 has been described as an example, the first mirror surface 21, the second mirror surface 22, and the third mirror surface 23 are opposite to each other. The shape is not limited to the above-described shape. Specifically, as shown in FIG. 7, when the first mirror surface 21 a is formed in a curved surface that swells inward with respect to the first reference surface 31, the second mirror surface 22 a is relative to the second reference surface 32. The third mirror surface 23 a is formed in a curved surface that bulges outward with respect to the third reference surface 33.
また、上記実施形態では、各鏡面２１，２２，２３が正規分布曲線状の曲面である場合を例示して説明したが、これ以外にも例えば球面、楕円曲面、放物線を基とした曲面等であってもよい。 In the above embodiment, the case where each mirror surface 21, 22, 23 is a curved surface having a normal distribution curve has been described as an example. However, other than this, for example, a spherical surface, an elliptical curved surface, a curved surface based on a parabola, or the like. There may be.
また、上記実施形態では、光軸Ｌと各基準面３１，３２，３３とがなす角度が３５．２９３度としているが、光軸Ｌと第一基準面３１とがなす角度を３５．１６８度として、光軸Ｌと第二基準面３２がなす角度と、光軸Ｌと第三基準面３３とがなす角度とを３５．３６度とすると、より高い効率で反射光を明るくすることが可能である。 Moreover, in the said embodiment, although the angle which the optical axis L and each reference plane 31,32,33 make is 35.293 degree | times, the angle which the optical axis L and the 1st reference plane 31 make is 35.168 degree | times. Assuming that the angle formed by the optical axis L and the second reference surface 32 and the angle formed by the optical axis L and the third reference surface 33 are 35.36 degrees, the reflected light can be brightened with higher efficiency. It is.
１ 反射器
２ 反射エレメント
２１ 第一鏡面
２２ 第二鏡面
２３ 第三鏡面
３１ 第一基準面
３１ａ 一方の対角線
３１ｂ 他方の対角線
３２ 第二基準面
３３ 第三基準面
１００ 光源
Ｈ２ 距離
Ｌ 光軸
Ｐ１ 配光パターン
Ｐ２ 配光パターン
DESCRIPTION OF SYMBOLS 1 Reflector 2 Reflective element 21 1st mirror surface 22 2nd mirror surface 23 3rd mirror surface 31 1st reference surface 31a One diagonal line 31b The other diagonal line 32 2nd reference surface 33 3rd reference surface 100 Light source H2 Distance L Optical axis P1 arrangement Light pattern P2 Light distribution pattern
Claims (3)
前記反射エレメントは、
正面視で正六角形をなす仮想的な立方体の六平面のうち、互いに隣接する三平面をそれぞれ第一基準面、第二基準面及び第三基準面とすると、前記第一基準面に沿う第一鏡面と、前記第二基準面に沿う第二鏡面と、前記第三基準面に沿う第三鏡面とを備え、
前記第一鏡面、前記第二鏡面及び前記第三鏡面は、互いに隣接していて、
前記第一鏡面が前記第一基準面に対して外側に膨らむ曲面に形成されている場合は、前記第二鏡面は前記第二基準面に対して内側に膨らむ曲面に形成されるとともに、前記第三鏡面は前記第三基準面に対して内側に膨らむ曲面に形成され、
前記第一鏡面が前記第一基準面に対して内側に膨らむ曲面に形成されている場合は、前記第二鏡面は前記第二基準面に対して外側に膨らむ曲面に形成されるとともに、前記第三鏡面は前記第三基準面に対して外側に膨らむ曲面に形成されており、
前記第一基準面の一対の対角線のうち、一方の対角線が前記第二基準面、前記第三基準面との交点を通過し、他方の対角線が上下方向に延在するように、前記第一基準面、前記第二基準面及び前記第三基準面が配置されていることを特徴とする反射器。 In a reflector having a number of reflective elements arranged in a substantially planar shape,
The reflective element is
Of the six planes of a virtual cube that forms a regular hexagon when viewed from the front, if the three planes adjacent to each other are the first reference plane, the second reference plane, and the third reference plane, respectively, the first along the first reference plane A mirror surface, a second mirror surface along the second reference surface, and a third mirror surface along the third reference surface,
The first mirror surface, the second mirror surface and the third mirror surface are adjacent to each other;
When the first mirror surface is formed in a curved surface that swells outward with respect to the first reference surface, the second mirror surface is formed in a curved surface that swells inward with respect to the second reference surface, and The three mirror surfaces are formed into curved surfaces that swell inward with respect to the third reference surface,
When the first mirror surface is formed in a curved surface that swells inward with respect to the first reference surface, the second mirror surface is formed in a curved surface that swells outward with respect to the second reference surface, and The three mirror surfaces are formed into curved surfaces that swell outward with respect to the third reference surface ,
Of the pair of diagonal lines of the first reference plane, the first diagonal line passes through the intersection of the second reference plane and the third reference plane, and the other diagonal line extends in the vertical direction. A reflector comprising a reference plane, the second reference plane, and the third reference plane .
前記第一鏡面、前記第二鏡面及び前記第三鏡面は、頂点と基準面との距離が前記正六角形の高さの１／２３００となる曲面にそれぞれ形成されていることを特徴とする反射器。 The reflector of claim 1, wherein
The first mirror surface, the second mirror surface, and the third mirror surface are each formed as a curved surface in which the distance between the apex and the reference surface is 1/2300 of the height of the regular hexagon . .
前記第一鏡面、前記第二鏡面及び前記第三鏡面は、正規分布曲線もしくは放物線を基にした曲面、球面または楕円曲面であることを特徴とする反射器。The reflector according to claim 1, wherein the first mirror surface, the second mirror surface, and the third mirror surface are curved surfaces based on normal distribution curves or parabolas, spherical surfaces, or elliptic curved surfaces.
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| JPH05150368A (en) * | 1991-11-28 | 1993-06-18 | Sony Corp | Reflection type screen |
| JPH0829603A (en) * | 1994-07-12 | 1996-02-02 | Stanley Electric Co Ltd | Retroreflector |
| WO2005054909A1 (en) * | 2003-12-02 | 2005-06-16 | Nippon Carbide Kogyo Kabushiki Kaisha | Triangular pyramid type cube corner retro-reflection article having curved reflection side surface |
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