JPS5522724A - Color filter - Google Patents
Color filterInfo
- Publication number
- JPS5522724A JPS5522724A JP9514278A JP9514278A JPS5522724A JP S5522724 A JPS5522724 A JP S5522724A JP 9514278 A JP9514278 A JP 9514278A JP 9514278 A JP9514278 A JP 9514278A JP S5522724 A JPS5522724 A JP S5522724A
- Authority
- JP
- Japan
- Prior art keywords
- range
- wavelength
- light source
- filter
- color filter
- 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
- Optical Filters (AREA)
Abstract
PURPOSE: To improve the transmittance of the filter and let its chromaticity conform to JIS by specifying the spectral transmittance of the color filter which is used as a signal lamp in an airport, heliport or the like.
CONSTITUTION: A light source 2 such as halogen bulb, a reflector 3, a color filter 4 and a light controller 5 such as lens or prism are contained in a lighting device 1 buried in road surface. The light source 2 is so constituted as to permit brightness control in 3 to 5 stages and this controlling causes the spectral characteristics of the light source 2 to change in color temperature within a range from 3200 to 1700K°. For this purpose, the filter 4 whose spectral transmittances have the cut points of 78% or over in the range of wavelength 400 to 520nm, 5% or under inwavelength 600 to 610nm, 3.5% or under in the range of wavelength 550 to 565nm within the range of wavelength 400 to 700nm is used.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9514278A JPS5522724A (en) | 1978-08-04 | 1978-08-04 | Color filter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9514278A JPS5522724A (en) | 1978-08-04 | 1978-08-04 | Color filter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5522724A true JPS5522724A (en) | 1980-02-18 |
Family
ID=14129545
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9514278A Pending JPS5522724A (en) | 1978-08-04 | 1978-08-04 | Color filter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5522724A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57139979U (en) * | 1981-02-26 | 1982-09-01 | ||
JPS61263002A (en) * | 1985-05-03 | 1986-11-21 | ハインツ−オツト−・ベ−レン | Lighting unit |
JPS62115300U (en) * | 1986-01-16 | 1987-07-22 | ||
JPS62115996U (en) * | 1986-01-23 | 1987-07-23 |
-
1978
- 1978-08-04 JP JP9514278A patent/JPS5522724A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57139979U (en) * | 1981-02-26 | 1982-09-01 | ||
JPS6331081Y2 (en) * | 1981-02-26 | 1988-08-19 | ||
JPS61263002A (en) * | 1985-05-03 | 1986-11-21 | ハインツ−オツト−・ベ−レン | Lighting unit |
JPH0375964B2 (en) * | 1985-05-03 | 1991-12-04 | Haintsuuotsutoo Beeren | |
JPS62115300U (en) * | 1986-01-16 | 1987-07-22 | ||
JPS62115996U (en) * | 1986-01-23 | 1987-07-23 |
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