JPH0375961B2 - - Google Patents
Info
- Publication number
- JPH0375961B2 JPH0375961B2 JP61249091A JP24909186A JPH0375961B2 JP H0375961 B2 JPH0375961 B2 JP H0375961B2 JP 61249091 A JP61249091 A JP 61249091A JP 24909186 A JP24909186 A JP 24909186A JP H0375961 B2 JPH0375961 B2 JP H0375961B2
- Authority
- JP
- Japan
- Prior art keywords
- lens
- light
- reflected
- vehicle lamp
- reflective film
- 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.)
- Expired - Lifetime
Links
- 230000000694 effects Effects 0.000 description 4
- 230000002238 attenuated effect Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000004313 glare Effects 0.000 description 1
Landscapes
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Description
【発明の詳細な説明】
本発明車輌用灯具のレンズを以下の項目に従つ
て説明する。DETAILED DESCRIPTION OF THE INVENTION The lens of the vehicle lamp of the present invention will be explained according to the following items.
Ａ 産業上の利用分野
Ｂ 発明の概要
Ｃ 従来技術［第１０図］
Ｄ 発明が解決しようとする問題点［第１０図］
Ｅ 問題点を解決するための手段
Ｆ 実施例
ａ 正面形状［第１図乃至第３図］
ｂ 断面形状
ｂ−１ 第１の例［第４図］
ｂ−２ 第２の例［第５図］
ｂ−３ 第３の例［第６図、第７図］
ｂ−４ 第４の例［第８図］
ｂ−５ 第５の例［第９図］
Ｇ 発明の効果
（Ａ 産業上の利用分野）
本発明は新規な車輌用灯具のレンズに関する。
詳しくは、前面に略規則的なパターン反射膜が形
成された車輌用灯具のレンズの前面に該レンズが
ある高さと同じ位の高さの低い位置からの外光が
入射しても、それが他の運転者等に対する眩惑光
となることがないようにした新規な車輌用灯具の
レンズを提供しようとするものである。A. Field of industrial application B. Outline of the invention C. Prior art [Figure 10] D. Problems to be solved by the invention [Figure 10] E. Means for solving the problems F. Example a. Front shape [First Figures to Figures 3] b Cross-sectional shape b-1 First example [Figure 4] b-2 Second example [Figure 5] b-3 Third example [Figures 6 and 7] b -4 Fourth example [Fig. 8] b-5 Fifth example [Fig. 9] G Effects of the invention (A. Field of industrial application) The present invention relates to a novel lens for a vehicular lamp.
Specifically, even if external light from a low position at the same height as the lens is incident on the front surface of the lens of a vehicle lamp that has a substantially regular pattern reflective film formed on the front surface, it will not The object of the present invention is to provide a novel lens for a vehicle lamp that does not dazzle other drivers.
（Ｂ 発明の概要）
本発明車輌用灯具のレンズは、前面に略規則的
に凹凸を形成し、そして、凸部の頂部を除く部分
の全面に反射膜を形成したもので、レンズの前方
の低い位置からの外光がレンズ前面に入射して
も、反射膜に入射するものは、反射膜が凹部内の
全面に形成されているため、凹部内で何回も反射
されて減衰したり、あるいは、上方又は下方へ大
きくそれて反射され、レンズの前方に位置する者
への眩惑光となることがない。(B Summary of the Invention) The lens of the vehicular lamp of the present invention has irregularities formed approximately regularly on the front surface, and a reflective film is formed on the entire surface except the top of the convex portion. Even if external light from a low position enters the front surface of the lens, the light that enters the reflective film will be reflected many times within the recess and be attenuated, since the reflective film is formed on the entire surface of the recess. Alternatively, the light is reflected with a large deviation upward or downward and does not dazzle a person located in front of the lens.
（Ｃ 従来技術）［第１０図］
車輌用灯具のレンズに前面に略規則的に凹凸を
形成し、凸部の頂面に反射膜を形成したものがあ
る。(C. Prior Art) [Fig. 10] There is a lens for a vehicle lamp having approximately regularly formed irregularities on the front surface and a reflective film formed on the top surface of the convex portion.
第１０図はそのような車輌用灯具のレンズの一
例ａを示すものである。 FIG. 10 shows an example of a lens for such a vehicle lamp.
ｂ，ｂ，…はレンズａの前面に形成された凸部
であり、ｃ，ｃ，…はこれら凸部ｂ，ｂ，…の間
に形成された凹部である。 b, b, . . . are convex portions formed on the front surface of lens a, and c, c, . . . are concave portions formed between these convex portions b, b, .
そして、凸部ｂ，ｂ，…の頂部には反射膜ｄ，
ｄ，…が形成されている。 Then, on the tops of the convex portions b, b, ..., reflective films d,
d,... are formed.
上記のようなレンズａにあつては、レンズａの
内面側から来た光は凹部ｃ，ｃ，…を透過して前
方へ照射される。 In the lens a as described above, light coming from the inner surface of the lens a passes through the recesses c, c, . . . and is irradiated forward.
（Ｄ 発明が解決しようとする問題点）［第１０
図］
上記した車輌用灯具のレンズａにあつては、レ
ンズａと略同じ高さからレンズａの前面に入射す
る光ｅ、例えば、後続車の前照灯からの光や西陽
があると、該光ｅが凸部ｂ，ｂ，…の頂部に形成
された反射膜ｄ，ｄ，…で反射されて、該光ｅの
略光源方向に反射されてしまう。(D Problems to be solved by the invention) [No. 10
Figure] Regarding lens a of the vehicle lamp described above, if there is light e incident on the front surface of lens a from approximately the same height as lens a, for example, light from the headlight of a following vehicle or the western sun, The light e is reflected by the reflective films d, d, . . . formed on the tops of the convex portions b, b, . . . and is reflected substantially in the direction of the light source of the light e.
従つて、例えば、上記レンズａが自動車の後部
信号灯のレンズとして使用されていたような場
合、上記反射光が後続車の運転者に対する眩惑光
となり、交通の安全が妨げられるという問題があ
る。また、上記の如き反射光が、眩惑光とならな
いまでも、該レンズａが使用された信号灯の点
灯、非点灯の区別をつけづらくし、先行車の行動
予測を行なうことができなくなり、これも交通の
安全を著しく阻害することになる。 Therefore, for example, when the lens a is used as a lens for a rear signal light of an automobile, the reflected light becomes a dazzling light for the driver of a following vehicle, and there is a problem that traffic safety is hindered. In addition, even if the reflected light as described above does not cause dazzling light, it makes it difficult to distinguish between lighting and non-lighting of the signal light in which the lens a is used, making it impossible to predict the behavior of the preceding vehicle. This will seriously impede traffic safety.
（Ｅ 問題点を解決するための手段）
本発明車輌用灯具のレンズは、上記した問題点
を解決するために、前面に略規則的に凹凸を形成
し、凸部の頂部を除く部分の全面に反射膜を形成
したものである。(E. Means for Solving Problems) In order to solve the above-mentioned problems, the lens of the vehicle lamp of the present invention has irregularities formed approximately regularly on the front surface, and the entire surface of the part excluding the tops of the convex portions. A reflective film is formed on the surface.
従つて、本発明車輌用灯具のレンズによれば、
レンズ前方の低い位置からの外光がレンズ前面に
入射しても、反射膜が凹部内の全面に形成されて
いるため、反射膜に入射した光は凹部内で何回も
反射されて減衰したり、あるいはまた、上方とか
下方へ大きくそらされて反射され、レンズの前方
に位置する者への眩惑光となることがない。 Therefore, according to the lens of the vehicle lamp of the present invention,
Even if external light from a low position in front of the lens enters the front surface of the lens, the reflective film is formed all over the inside of the recess, so the light that enters the reflective film will be reflected many times inside the recess and attenuate. Or, alternatively, the light is deflected and reflected significantly upward or downward, so that it does not dazzle those in front of the lens.
（Ｆ 実施例）
以下に、本発明車輌用灯具のレンズの詳細を図
示した実施例に従つて説明する。(F. Example) Below, details of the lens of the vehicle lamp of the present invention will be explained according to the illustrated example.
図中１が車輌用灯具のレンズである。 In the figure, numeral 1 is a lens for a vehicle lamp.
該レンズ１の前面には多数の凸部２，２，…と
凹部３，３，…とが多数規則的に形成されてい
て、凹部３，３，…にはその側面部も含めて反射
膜４，４，…（梨地模様を付している部分）が形
成されている。 A large number of convex portions 2, 2, ... and a large number of concave portions 3, 3, ... are regularly formed on the front surface of the lens 1, and the recesses 3, 3, ..., including their side surfaces, are coated with a reflective film. 4, 4, ... (portion with satin pattern) are formed.
（ａ 正面形状）［第１図乃至第３図］
これら凸部２，２，…と凹部３，３，…の配列
は略規則的なものであればどのようなものでも良
いが、一例として、第１図に示す横縞状、第２図
に示す同心円状、第３図に示す格子状のもの等が
考えられる。(a Front shape) [Figures 1 to 3] The convex portions 2, 2, ... and the concave portions 3, 3, ... may be arranged in any manner as long as they are approximately regular, but as an example, , a horizontal stripe shape as shown in FIG. 1, a concentric circle shape as shown in FIG. 2, and a lattice shape as shown in FIG. 3.
（ｂ 断面形状）
断面形状については、凸部２，２，…の頂部が
略平面であることを除いては種々のものが考えら
れるが、そのうちのいくつかを以下に示す。(b Cross-sectional shape) Various cross-sectional shapes can be considered, except that the tops of the convex portions 2, 2, ... are substantially flat, and some of them are shown below.
（ｂ−１ 第１の例）［第４図］
第４図に示したものは、凸部２，２，…が略台
形状を為し、凹部３，３，…が略逆台形状を為す
ものである。(b-1 First example) [Fig. 4] In the case shown in Fig. 4, the convex portions 2, 2, ... have a substantially trapezoidal shape, and the concave portions 3, 3, ... have a substantially inverted trapezoidal shape. It is something that is done.
このような断面形状を為すものの場合、低い位
置から来て凹部３，３，…に入射した光のうち側
面に当つた光l1は該側面で反射された後底面で更
に反射され上方へ向けて（上側の側面に入射した
ものは下方へ向けて）反射され、レンズ１の前方
へは向わない。 In the case of a device with such a cross-sectional shape, among the light that comes from a low position and enters the recesses 3, 3 , ..., the light that hits the side surface is reflected by the side surface and then further reflected at the bottom surface and directed upward. (those incident on the upper side face are reflected downward) and do not go forward of the lens 1.
また、稍高い位置から凹部３，３，…に入射し
た光l2やl3は凹部３，３，…の側面や底面で数回
に亘つて反射されて減衰された後上向きに或は下
向きに反射される。 Also, the light l 2 or l 3 that enters the recesses 3, 3, ... from a slightly higher position is reflected several times on the sides and bottoms of the recesses 3, 3, ... and is attenuated, and then is reflected upward or downward. reflected.
尚、反射膜４，４，…を全体に亘つて、或は側
面のみをハーフミラーとしておくと、反射時の減
衰がより大きくなるという効果がある。 It should be noted that if the entire reflective film 4, 4, . . . is formed into a half mirror, or only the side surfaces thereof are made into a half mirror, there is an effect that the attenuation during reflection becomes larger.
（ｂ−２、第２の例）［第５図］
第５図に示したものは、凹部３，３，…の形状
は開口部に行くに従つて拡開した状態の略Ｕ字状
にしたものである。(b-2, 2nd example) [Figure 5] In the case shown in Figure 5, the shape of the recesses 3, 3, ... is approximately U-shaped, expanding as it approaches the opening. This is what I did.
このような断面形状を有するものにあつては、
凹部３，３，…に入射した光l4は様々な方向に反
射され上下に大きく拡散されるので、これもレン
ズ前方へ向つて眩惑光となることがない。 For those with such a cross-sectional shape,
Since the light l4 incident on the recesses 3, 3, .
この場合も、反射膜４，４，…をその側面部だ
けでもハーフミラーとしておくと、反射時の減衰
があり効果的である。 In this case as well, it is effective to make the reflective films 4, 4, . . . half mirrors even on their side surfaces, since this will attenuate the reflection.
（ｂ−３ 第３の例）［第６図、第７図］
第６図は凹部３，３，…の底面を凸部２，２，
…の頂面に対して傾斜させたものを示す。(b-3 Third example) [Figures 6 and 7] Figure 6 shows the bottom surfaces of the recesses 3, 3,...
It is shown tilted with respect to the top surface of...
このような断面形状を有するものにあつては、
凹部３，３，…に入射した光は底面で反射されて
上方へ向つたりl5、あるいは底面で反射された後
上の側面で反射されて下方へ向つたりl6するた
め、これもレンズ前方への眩惑光とならない。 For those with such a cross-sectional shape,
The light incident on the recesses 3, 3, ... is reflected on the bottom surface and goes upward, l 5 , or after being reflected on the bottom surface, it is reflected on the upper side surface and goes downward, l 6 , so this is also true. Does not cause dazzling light in front of the lens.
この場合も反射膜４，４，…の全部又は一部
（特に側面）がハーフミラーになつていると減衰
が大きくなる。 In this case as well, if all or part (particularly the side surfaces) of the reflective films 4, 4, . . . are half mirrors, the attenuation will be large.
尚、凹部３，３，…の底面の傾斜を逆にしたの
が第７図であり、この場合は光はl7，l8で示すよ
うにそれる。 In addition, FIG. 7 shows the case where the slopes of the bottom surfaces of the recesses 3 , 3 , .
（ｂ−４ 第４の例）［第８図］
第８図は凹部３，３，…の断面形状をＶ字形に
したものである。(b-4 Fourth Example) [Fig. 8] In Fig. 8, the recesses 3, 3, . . . have a V-shaped cross section.
このような断面形状を有するものにあつては、
凹部３，３，…に入射した光l9は、一の斜面で反
射された後、必ず別の斜面で反射されるため、減
衰されると共に、２つの斜面の為す角度θを適当
に選ぶことにより、反射光は外部光源に対して大
きくずれた方向に向うため、後続車等に対する眩
惑光となることがない。 For those with such a cross-sectional shape,
Since the light l 9 incident on the recesses 3, 3, ... is reflected on one slope, it is always reflected on another slope, so it is attenuated and the angle θ formed by the two slopes must be appropriately selected. As a result, the reflected light is directed in a direction that is largely shifted from the external light source, so it does not dazzle the following vehicles.
尚、上記角度θが90°のとき再帰反射をするの
で、上記角度θを80°から100°の間を避けた値と
すると良い。 Incidentally, since retroreflection occurs when the angle θ is 90°, it is preferable to set the angle θ to a value that avoids a value between 80° and 100°.
また、この場合も反射膜４，４，…をハーフミ
ラーとしておけば、反射時の減衰が大きくなつ
て、眩惑光がより発生しづらくなる。 Further, in this case as well, if the reflective films 4, 4, .
（ｂ−５、第５の例）［第９図］
第９図は凹部３，３，…の断面形状を先端から
稍奥へ行つたところからＶ字形にしたものであ
り、これも、前記第８図に示した第４の例のもの
と同様の効果を奏する。(b-5, 5th example) [Figure 9] Figure 9 shows the cross-sectional shape of the recesses 3, 3, ... made into a V-shape from the tip to the bottom, which is also similar to the above-mentioned The same effect as that of the fourth example shown in FIG. 8 is achieved.
（Ｇ 発明の効果）
以上に記載したところから明らかなように、本
発明車輌用灯具のレンズは、前面に略規則的に凹
凸が形成され、前記凸部の頂部を除く部分の全面
に反射膜を形成したことを特徴とする。(G Effect of the Invention) As is clear from the above description, the lens of the vehicle lamp of the present invention has irregularities formed approximately regularly on the front surface, and a reflective film is provided on the entire surface except for the tops of the convex portions. It is characterized by the formation of
従つて、本発明車輌用灯具のレンズによれば、
レンズ前方の低い位置からの外光がレンズ前面に
入射しても、反射膜が凹部内の全面に形成されて
いるため、反射膜に入射した光は凹部内で何回も
反射されて減衰したり、あるいはまた、上方とか
下方へ大きくそらされて反射され、レンズの前方
に位置する者への眩感光となることがない。 Therefore, according to the lens of the vehicle lamp of the present invention,
Even if external light from a low position in front of the lens enters the front surface of the lens, the reflective film is formed all over the inside of the recess, so the light that enters the reflective film will be reflected many times inside the recess and attenuate. Or, alternatively, the light is largely deflected upward or downward and reflected, so that it does not cause glare to a person located in front of the lens.
尚、本発明車輌用灯具のレンズは灯具の一番外
側に配置されるレンズ、即ち、アウターレンズと
して使用される他、インナーレンズ、即ち、外側
に配置された別のレンズの内側に配置されるレン
ズとして適用されても良い。 The lens of the vehicle lamp of the present invention may be used as the outermost lens of the lamp, that is, an outer lens, or as an inner lens, that is, placed inside another lens placed on the outside. It may also be applied as a lens.
また、本発明車輌用灯具のレンズを具体的に適
用する場合、裏面に集光レンズ素子を設け、ある
いは裏面側に配置される別のレンズに集光レンズ
素子を設けて光を凸部の頂部に集光させるように
して、光束の有効利用を図るようにすると良い。 In addition, when the lens of the vehicle lamp of the present invention is specifically applied, a condensing lens element is provided on the back surface, or a condensing lens element is provided on another lens placed on the back surface side to direct the light to the top of the convex portion. It is preferable to condense the light to make effective use of the luminous flux.
第１図乃至第９図は本発明車輌用灯具のレンズ
の実施例を示すもので、第１図乃至第３図は正面
形状の各別の例を示す正面図、第４図乃至第９図
はそれぞれ断面形状の各別の例を示す拡大断面図
であり、第１０図は従来の車輌用灯具のレンズの
一例を示す拡大断面図である。
符号の説明、１……車輌用灯具のレンズ、２…
…凸部、４……反射膜。
1 to 9 show examples of the lens of the vehicle lamp of the present invention, FIGS. 1 to 3 are front views showing different examples of the front shape, and FIGS. 4 to 9 are enlarged cross-sectional views showing different examples of cross-sectional shapes, and FIG. 10 is an enlarged cross-sectional view showing an example of a lens of a conventional vehicle lamp. Explanation of symbols, 1... Lens of vehicle lamp, 2...
... Convex portion, 4... Reflective film.
Claims (1)
成した ことを特徴とする車輌用灯具のレンズ。[Scope of Claims] 1. A lens for a vehicular lamp, characterized in that a front surface is roughly regularly formed with concavities and convexities, and a reflective film is formed on the entire surface of the lens except for the tops of the convexities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61249091A JPS63105401A (en) | 1986-10-20 | 1986-10-20 | Lens for vehicle lamp apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61249091A JPS63105401A (en) | 1986-10-20 | 1986-10-20 | Lens for vehicle lamp apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63105401A JPS63105401A (en) | 1988-05-10 |
| JPH0375961B2 true JPH0375961B2 (en) | 1991-12-04 |
Family
ID=17187849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61249091A Granted JPS63105401A (en) | 1986-10-20 | 1986-10-20 | Lens for vehicle lamp apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63105401A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0753207Y2 (en) * | 1989-07-10 | 1995-12-06 | 株式会社小糸製作所 | Vehicle lighting |
| JP6032790B2 (en) * | 2012-03-02 | 2016-11-30 | 現代自動車株式会社Ｈｙｕｎｄａｉ Ｍｏｔｏｒ Ｃｏｍｐａｎｙ | Vehicle lighting |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS605002B2 (en) * | 1978-07-12 | 1985-02-07 | 株式会社日立国際電気 | Self-detection device for moving object stop position |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS605002U (en) * | 1983-06-23 | 1985-01-14 | 株式会社小糸製作所 | Vehicle lights |
-
1986
- 1986-10-20 JP JP61249091A patent/JPS63105401A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS605002B2 (en) * | 1978-07-12 | 1985-02-07 | 株式会社日立国際電気 | Self-detection device for moving object stop position |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63105401A (en) | 1988-05-10 |
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