JPS5564359A - Fluorescent lamp - Google Patents
Fluorescent lampInfo
- Publication number
- JPS5564359A JPS5564359A JP13680678A JP13680678A JPS5564359A JP S5564359 A JPS5564359 A JP S5564359A JP 13680678 A JP13680678 A JP 13680678A JP 13680678 A JP13680678 A JP 13680678A JP S5564359 A JPS5564359 A JP S5564359A
- Authority
- JP
- Japan
- Prior art keywords
- phosphor
- phosphor layer
- circumferentially
- layer
- glass tube
- 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
Links
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
PURPOSE: To obtain a high intensity of illumination and high color rendering, by constituting the phosphor layers that are comprising a phosphor layer, coated fully circumferentially on the inner wall of glass tube, and a phosphor layer, coated partially circumferentially on top of the former layer.
CONSTITUTION: Fully circumferentially to the inner wall of a glass tube 1, is applied a phosphor layer 2, having a specific emission spectrum, and circumferentially on top of that in a region except an opening angle α, is applied a phosphor layer 3, respectively, having an emission spectrum similar to or different from the phosphor of the phosphor layer 2. The direction of irradiation is mainly toward a direction of R oppositely to that facing the phosphor layer 3. As a phosphor, used in the phosphor layer 2, 3, can be used a phosphor of white, day-light and dull white color, as shown in JISZ9112 (class of chromaticity of fluorescent lamp), and those of color rendering modified type, for instance, of pure natutal white color type.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13680678A JPS5564359A (en) | 1978-11-08 | 1978-11-08 | Fluorescent lamp |
US06/089,744 US4336479A (en) | 1978-11-08 | 1979-10-31 | Fluorescent lamp having reflective layer and a method for fabricating the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13680678A JPS5564359A (en) | 1978-11-08 | 1978-11-08 | Fluorescent lamp |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5564359A true JPS5564359A (en) | 1980-05-15 |
JPS6337458B2 JPS6337458B2 (en) | 1988-07-26 |
Family
ID=15183940
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13680678A Granted JPS5564359A (en) | 1978-11-08 | 1978-11-08 | Fluorescent lamp |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5564359A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0806792A2 (en) * | 1996-05-08 | 1997-11-12 | SLI Lichtsysteme GmbH | Compact fluorescence lamp |
-
1978
- 1978-11-08 JP JP13680678A patent/JPS5564359A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0806792A2 (en) * | 1996-05-08 | 1997-11-12 | SLI Lichtsysteme GmbH | Compact fluorescence lamp |
EP0806792A3 (en) * | 1996-05-08 | 1998-03-11 | SLI Lichtsysteme GmbH | Compact fluorescence lamp |
Also Published As
Publication number | Publication date |
---|---|
JPS6337458B2 (en) | 1988-07-26 |
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