JPS5475184A - Fluorescent lamp - Google Patents
Fluorescent lampInfo
- Publication number
- JPS5475184A JPS5475184A JP14238477A JP14238477A JPS5475184A JP S5475184 A JPS5475184 A JP S5475184A JP 14238477 A JP14238477 A JP 14238477A JP 14238477 A JP14238477 A JP 14238477A JP S5475184 A JPS5475184 A JP S5475184A
- Authority
- JP
- Japan
- Prior art keywords
- phosphor
- coated
- fluorescent lamp
- transmission
- portions
- 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.)
- Pending
Links
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
PURPOSE: To effectively utilize the quantity of light, by eliminating the need for shading correction at the outside by performing shading correction by fluorescent lamp itself by appropriately selecting the rate of transmission portions and a portion, which is coated with a phosphor, of an aperture portion.
CONSTITUTION: A central portion in the tubular length direction of an aperture portion p, a non-reflective portion not coated with a high reflective matter for preventing transmission, is coated with a phosphor 2 and surroundings in the tubular axial direction of the aperture porion p, both end portions of a fluorescent lamp, are shaped in transmission conditions without applying the phosphor 2 to the surroundings. Consequently, the aperture portion p is provided with a portion coated with the phosphor and transmission portions, and portions corresponding to both end portions of the fluorescent lamp are shaped in transmission conditions, thus heighting the luminance of both end portions higher than the central portion in the tubular axial direction of the luminescent lamp.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14238477A JPS5475184A (en) | 1977-11-28 | 1977-11-28 | Fluorescent lamp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14238477A JPS5475184A (en) | 1977-11-28 | 1977-11-28 | Fluorescent lamp |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5475184A true JPS5475184A (en) | 1979-06-15 |
Family
ID=15314101
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14238477A Pending JPS5475184A (en) | 1977-11-28 | 1977-11-28 | Fluorescent lamp |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5475184A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04133226U (en) * | 1991-05-31 | 1992-12-11 | 京セラ株式会社 | liquid crystal display element |
FR2713825A1 (en) * | 1993-12-10 | 1995-06-16 | Gen Electric | Light source with an optical interference filter, method for forming such a filter and lighting system provided with such a light source. |
-
1977
- 1977-11-28 JP JP14238477A patent/JPS5475184A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04133226U (en) * | 1991-05-31 | 1992-12-11 | 京セラ株式会社 | liquid crystal display element |
FR2713825A1 (en) * | 1993-12-10 | 1995-06-16 | Gen Electric | Light source with an optical interference filter, method for forming such a filter and lighting system provided with such a light source. |
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