JPS5579430A - Lighting equipment - Google Patents
Lighting equipmentInfo
- Publication number
- JPS5579430A JPS5579430A JP15437678A JP15437678A JPS5579430A JP S5579430 A JPS5579430 A JP S5579430A JP 15437678 A JP15437678 A JP 15437678A JP 15437678 A JP15437678 A JP 15437678A JP S5579430 A JPS5579430 A JP S5579430A
- Authority
- JP
- Japan
- Prior art keywords
- light source
- lens group
- film
- lens
- reader
- 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
- Light Sources And Details Of Projection-Printing Devices (AREA)
Abstract
PURPOSE: To prevent uneven illumination and exposure, by varying the distance between light source and subject, or the distance between light source and condenser lens, and changing the supply power to the light source in cooperation therewith.
CONSTITUTION: When using a reader/printer as a reader, the light from a light source 4 is focused by a condenser lens group 5, and reflected by a mirror 7 to light the film in a carrier 3 through a condenser lens group 6. The image on this film is projected on a screen 12 by a projection lens 8 through mirrors 9W11. When the projection lens 8 is for low magnification, the lens group 5 is brought closer to the lens group 4, and a wide part of the film is illuminated uniformly, and supply power to the light source 4 is reduced in cooperation with this manipulation. When the lens 8 is for high magnification, on the other hand, the lens group 6 is moved away from the light source 4, and the illumination is concentrated in a narrow part of the film, and the supply power to the light source 4 is increased in cooperation with this manipulation. When printing, the lens 5 is adjusted to the optimum position as the reader, and a desired printing is performed.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15437678A JPS5579430A (en) | 1978-12-12 | 1978-12-12 | Lighting equipment |
US06/097,608 US4278334A (en) | 1978-12-01 | 1979-11-26 | Illumination control apparatus for projection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15437678A JPS5579430A (en) | 1978-12-12 | 1978-12-12 | Lighting equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5579430A true JPS5579430A (en) | 1980-06-14 |
Family
ID=15582794
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15437678A Pending JPS5579430A (en) | 1978-12-01 | 1978-12-12 | Lighting equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5579430A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5981639A (en) * | 1982-11-01 | 1984-05-11 | Minolta Camera Co Ltd | Microfilm projector |
JPS59111135A (en) * | 1982-12-16 | 1984-06-27 | Minolta Camera Co Ltd | Microfilm projector |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5320925A (en) * | 1976-08-10 | 1978-02-25 | Tokyo Maikuro Shiyashin Kk | Method and device for compensating light amount of projector |
-
1978
- 1978-12-12 JP JP15437678A patent/JPS5579430A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5320925A (en) * | 1976-08-10 | 1978-02-25 | Tokyo Maikuro Shiyashin Kk | Method and device for compensating light amount of projector |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5981639A (en) * | 1982-11-01 | 1984-05-11 | Minolta Camera Co Ltd | Microfilm projector |
JPS59111135A (en) * | 1982-12-16 | 1984-06-27 | Minolta Camera Co Ltd | Microfilm projector |
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