JPH0244409Y2 - - Google Patents

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Publication number
JPH0244409Y2
JPH0244409Y2 JP16370586U JP16370586U JPH0244409Y2 JP H0244409 Y2 JPH0244409 Y2 JP H0244409Y2 JP 16370586 U JP16370586 U JP 16370586U JP 16370586 U JP16370586 U JP 16370586U JP H0244409 Y2 JPH0244409 Y2 JP H0244409Y2
Authority
JP
Japan
Prior art keywords
fresnel lens
lens
steps
lens step
fresnel
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
Application number
JP16370586U
Other languages
Japanese (ja)
Other versions
JPS6369404U (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP16370586U priority Critical patent/JPH0244409Y2/ja
Publication of JPS6369404U publication Critical patent/JPS6369404U/ja
Application granted granted Critical
Publication of JPH0244409Y2 publication Critical patent/JPH0244409Y2/ja
Expired legal-status Critical Current

Links

Description

【考案の詳細な説明】 〈産業上の利用分野〉 本考案は自動車用灯具に関し、更に詳しくはフ
レネルレンズステツプを形成した前面レンズを光
軸に対して上下及び左右方向に傾斜させて設置す
るようにした自動車用灯具に関するものである。[Detailed description of the invention] <Industrial field of application> The present invention relates to an automobile lamp, and more specifically, a front lens formed with a Fresnel lens step is installed so as to be inclined vertically and horizontally with respect to the optical axis. The invention relates to automotive lighting equipment.

〈従来の技術〉 第５図乃至第８図に示す如く、前面レンズＡに
フレネルレンズステツプＢを形成し、この前面レ
ンズＡを光軸Ｌに対して上下方向及び左右方向に
傾斜させて設置するようにした自動車用灯具で
は、バルブＣからの光が前面レンズＡのフレネル
レンズステツプＢに入射する角度が各部分によつ
て大巾に相違する為、フレネルレンズステツブＢ
を形成する場合、上下方向のフレネルレンズステ
ツプB1，B2と左右方向のフレネルレンズステツ
プB3，B4とに分けて光学設計しなければならな
い。すると、各部分におけるフレネルレンズステ
ツプB1，B2，B3，B4の形状（大きさやピツチな
ど）が相違することになるので、上下方向のフレ
ネルレンズステツプB1，B2と左右方向のフレネ
ルレンズステツプB3，B4との境界部Ｅが互いに
ずれてしまい、点灯時に当該境界部Ｅが第５図に
示す如くＸ形状の暗部となり、あたかも前面レン
ズにヒビが入つたように見え、灯具の見映えを損
なう不具合があつた。<Prior art> As shown in FIGS. 5 to 8, a Fresnel lens step B is formed on the front lens A, and the front lens A is installed so as to be inclined vertically and horizontally with respect to the optical axis L. In such an automobile lamp, the angle at which the light from the bulb C enters the Fresnel lens step B of the front lens A varies widely depending on the part.
When forming a lens, the optical design must be divided into vertical Fresnel lens steps B 1 and B 2 and horizontal Fresnel lens steps B 3 and B 4 . Then, the shapes (size, pitch, etc.) of the Fresnel lens steps B 1 , B 2 , B 3 , and B 4 in each part will be different, so the Fresnel lens steps B 1 and B 2 in the vertical direction and the horizontal direction are different. The boundary E between the Fresnel lens steps B 3 and B 4 is shifted from each other, and when the light is turned on, the boundary E becomes an X-shaped dark area as shown in Fig. 5, and it looks as if the front lens has a crack. There was a problem that affected the appearance of the light fixture.

〈考案が解決しようとする問題点〉 本考案はこの様な従来の不具合に鑑みてなされ
たものであり、上下方向のフレネルレンズステツ
プと左右方向のフレネルレンズステツプとの境界
部が点灯時に暗部となることがなく、見映えの良
い自動車用灯具を提供せんとするものである。<Problems to be solved by the invention> The present invention was made in view of the above-mentioned conventional problems, and the boundary between the vertical Fresnel lens step and the horizontal Fresnel lens step becomes a dark area when the lamp is turned on. The purpose is to provide a lighting device for automobiles that has a good appearance and does not cause any damage to the vehicle.

〈問題点を解決するための手段〉 係る目的を達成する本考案自動車用灯具は、前
面レンズにフレネルレンズステツプを形成し、該
前面レンズを光軸に対して上下及び左右方向に傾
斜させて設置するようにした自動車用灯具におい
て、前記前面レンズにおける上下方向のフレネル
レンズステツプと左右方向のフレネルレンズステ
ツプとの境界部分に補正レンズステツプを形成せ
しめた事を特徴としたものである。<Means for solving the problem> The automotive lamp of the present invention that achieves the above object has a Fresnel lens step formed on the front lens, and the front lens is installed so as to be inclined vertically and horizontally with respect to the optical axis. This automotive lamp is characterized in that a correction lens step is formed at the boundary between the vertical Fresnel lens step and the horizontal Fresnel lens step in the front lens.

〈実施例〉 以下、本考案実施の一例を図面に基づいて説明
する。<Example> Hereinafter, an example of implementing the present invention will be described based on the drawings.

本考案自動車用灯具は従来と同様、図示してい
ない灯体と前面レンズＡ及びバルブＣとで構成さ
れ、その前面レンズＡは光軸Ｌに対して上下方向
及び左右方向に傾斜させて設置される。 The automotive lamp of the present invention is composed of a lamp body (not shown), a front lens A, and a bulb C, as in the conventional one, and the front lens A is installed to be inclined vertically and horizontally with respect to the optical axis L. Ru.

前面レンズＡはその内面にフレネルレンズステ
ツプＢを形成せしめるが、そのフレネルレンズス
テツプＢを上下方向のフレネルレンズステツプ
B1，B2と左右方向のフレネルレンズステツプB3，
B4とに分けて、光軸Ｌに対する傾斜度合に応じ
て光学設計して形成される。即ち、前面レンズＡ
のフレネルレンズステツプＢを形成する場合に、
フレネルレンズステツプＢ全体を上下部分のフレ
ネルレンズステツプB1，B2と左右部分のフレネ
ルレンズステツプB3，B4との４つに分割して、
各部分B1，B2，B3，B4毎に光軸Ｌに対する上下
及び左右方向の傾斜度合に応じて光学設計して形
成するものである。そして、上下方向のフレネル
レンズステツプB1，B2と左右方向のフレネルレ
ンズステツプB3，B4との境界部Ｅに適宜な巾を
有する補正レンズステツプＤを形成せしめる。 The front lens A has a Fresnel lens step B formed on its inner surface, and the Fresnel lens step B is formed into a vertical Fresnel lens step.
B 1 , B 2 and left and right Fresnel lens steps B 3 ,
B4 and are formed by optically designing according to the degree of inclination with respect to the optical axis L. That is, the front lens A
When forming Fresnel lens step B of
The entire Fresnel lens step B is divided into four parts: upper and lower Fresnel lens steps B 1 and B 2 and left and right Fresnel lens steps B 3 and B 4 .
Each portion B 1 , B 2 , B 3 , B 4 is formed by optically designing it according to the degree of inclination in the vertical and horizontal directions with respect to the optical axis L. Then, a correction lens step D having an appropriate width is formed at the boundary E between the vertical Fresnel lens steps B 1 and B 2 and the horizontal Fresnel lens steps B 3 and B 4 .

補正レンズステツプＤは光学的に上下方向のフ
レネルレンズステツプB1，B2と左右方向のフレ
ネルレンズステツプB2，B3の中間程度の屈折率
をもたせる。 The correction lens step D optically has a refractive index approximately intermediate between the Fresnel lens steps B 1 and B 2 in the vertical direction and the Fresnel lens steps B 2 and B 3 in the horizontal direction.

〈考案の効果〉 本考案自動車用灯具は斯様に構成したので、点
灯時において上下方向のフレネルレンズステツプ
と左右方向のフレルメレンズステツプとの境界部
分が暗部になることがなく、従つて点灯時の見映
えを従来のものより向上させることが出来る。<Effects of the invention> Since the automobile lamp of the present invention is constructed in this manner, the boundary between the vertical Fresnel lens step and the horizontal Fresnel lens step does not become a dark area when the lamp is turned on. The appearance of time can be improved compared to conventional ones.

よつて、所期の目的を達成し得る。 Therefore, the intended purpose can be achieved.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図乃至第４図は本考案実施の一例を示し、
第１図は本考案に係る前面レンズを内側から見た
正面図、第２図乃至第４図は第１図の各々２−２
線、３−３線、４−４線断面図である。第５図は
乃至第８図は従来例を示し、第５図は前面レンズ
を内側から見た正面図、第６図乃至第８図は第５
図の各々６−６線、７−７線、８−８線断面図で
ある。 図中、Ａは前面レンズ、Ｂはフレネルレンズス
テツプ、B1，B2は上下方向のフレネルレンズス
テツプ、B3，B4は左右方向のフレネルレンズス
テツプ、Ｃはバルブ、Ｄは補正レンズステツプ、
Ｅは境界部、Ｌは光軸、である。 1 to 4 show an example of the implementation of the present invention,
Figure 1 is a front view of the front lens according to the present invention seen from the inside, and Figures 2 to 4 are each 2-2 of Figure 1.
They are sectional views taken along lines 3-3 and 4-4. 5 to 8 show a conventional example, FIG. 5 is a front view of the front lens seen from inside, and FIGS. 6 to 8 show a conventional example.
They are sectional views taken along lines 6-6, 7-7, and 8-8 in the figure, respectively. In the figure, A is a front lens, B is a Fresnel lens step, B 1 and B 2 are vertical Fresnel lens steps, B 3 and B 4 are horizontal Fresnel lens steps, C is a bulb, and D is a correction lens step.
E is the boundary, and L is the optical axis.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 前面レンズにフレネルレンズステツプを形成
し、該前面レンズを光軸に対して上下及び左右方
向に傾斜させて設置するようにした自動車用灯具
において、前記前面レンズにおける上下方向のフ
レネルレンズステツプと左右方向のフレネルレン
ズステツプとの境界部分に補正レンズステツプを
形成せしめた事を特徴とする自動車用灯具。 In an automobile lamp in which a Fresnel lens step is formed on the front lens and the front lens is installed to be tilted vertically and horizontally with respect to the optical axis, the Fresnel lens step in the vertical direction and the horizontal direction on the front lens are An automotive lamp characterized in that a correction lens step is formed at the boundary between the Fresnel lens step and the Fresnel lens step.
JP16370586U 1986-10-24 1986-10-24 Expired JPH0244409Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16370586U JPH0244409Y2 (en) 1986-10-24 1986-10-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16370586U JPH0244409Y2 (en) 1986-10-24 1986-10-24

Publications (2)

Publication Number Publication Date
JPS6369404U JPS6369404U (en) 1988-05-10
JPH0244409Y2 true JPH0244409Y2 (en) 1990-11-26

Family

ID=31092154

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16370586U Expired JPH0244409Y2 (en) 1986-10-24 1986-10-24

Country Status (1)

Country Link
JP (1) JPH0244409Y2 (en)

Also Published As

Publication number Publication date
JPS6369404U (en) 1988-05-10

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