JPS5466577A - Lens for automobile lamp - Google Patents

Lens for automobile lamp

Info

Publication number
JPS5466577A
JPS5466577A JP13326077A JP13326077A JPS5466577A JP S5466577 A JPS5466577 A JP S5466577A JP 13326077 A JP13326077 A JP 13326077A JP 13326077 A JP13326077 A JP 13326077A JP S5466577 A JPS5466577 A JP S5466577A
Authority
JP
Japan
Prior art keywords
prism
cut
angle
light rays
light source
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.)
Granted
Application number
JP13326077A
Other languages
Japanese (ja)
Other versions
JPS5713962B2 (en
Inventor
Shuichi Suzuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stanley Electric Co Ltd
Original Assignee
Stanley Electric Co Ltd
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 by Stanley Electric Co Ltd filed Critical Stanley Electric Co Ltd
Priority to JP13326077A priority Critical patent/JPS5466577A/en
Publication of JPS5466577A publication Critical patent/JPS5466577A/en
Publication of JPS5713962B2 publication Critical patent/JPS5713962B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

PURPOSE: To provide the subject lens wherein the angle of the leading end of prism cut part constituting Fresnel cut is made constant, and the angle of forming the prism cut part is varied whereby light rays can be replaced by parallel light rays even at a position space apart from the light source.
CONSTITUTION: The prism cut part is formed into such a shape that light rays emitted from a light source 6 are fully reflected so as to form parallel light rays with respect to the front surface of the prism cut 5. That is, a light ray e incident on the prism cut 5 deflects at a predetermined angle, and fully reflects at other surface of the prism cut 5 and is irradiated to the outside in parallel to the axis Y. The angle between the central side surface of the prism part and the reference axis is represented by θ, the angle formed by the light source 6 and the cut 5 of the prism part by α, and the forward end angle of the cut 5 of the prism part by β. Then, the following relationship is established.
COPYRIGHT: (C)1979,JPO&Japio
JP13326077A 1977-11-07 1977-11-07 Lens for automobile lamp Granted JPS5466577A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13326077A JPS5466577A (en) 1977-11-07 1977-11-07 Lens for automobile lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13326077A JPS5466577A (en) 1977-11-07 1977-11-07 Lens for automobile lamp

Publications (2)

Publication Number Publication Date
JPS5466577A true JPS5466577A (en) 1979-05-29
JPS5713962B2 JPS5713962B2 (en) 1982-03-20

Family

ID=15100450

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13326077A Granted JPS5466577A (en) 1977-11-07 1977-11-07 Lens for automobile lamp

Country Status (1)

Country Link
JP (1) JPS5466577A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59128102U (en) * 1983-02-17 1984-08-29 市光工業株式会社 Vehicle lights
US5949346A (en) * 1995-06-07 1999-09-07 Toyoda Gosei Co., Ltd. Light-driven display device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59128102U (en) * 1983-02-17 1984-08-29 市光工業株式会社 Vehicle lights
US5949346A (en) * 1995-06-07 1999-09-07 Toyoda Gosei Co., Ltd. Light-driven display device

Also Published As

Publication number Publication date
JPS5713962B2 (en) 1982-03-20

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