JPS54136977A - Mirror device - Google Patents
Mirror deviceInfo
- Publication number
- JPS54136977A JPS54136977A JP4436378A JP4436378A JPS54136977A JP S54136977 A JPS54136977 A JP S54136977A JP 4436378 A JP4436378 A JP 4436378A JP 4436378 A JP4436378 A JP 4436378A JP S54136977 A JPS54136977 A JP S54136977A
- Authority
- JP
- Japan
- Prior art keywords
- mirror
- heater
- plane mirror
- magnifying glass
- back side
- 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
- Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)
Abstract
PURPOSE: To use part of a plane mirror as a magnifying glass like a concave mirror by attaching a heater at one corner of the back side of the plane mirror.
CONSTITUTION: Heater 2, with heat generating body 7 arranged in a concentric cicle from the center toward the outer circumference, is attached at a lower corner on the back side of a commercially available plane mirror. This kind of mirror 3 is ordinarily used as a smooth plane mirror but if heater 2 is switched on, only the back surface expands before the front side expands because of the difference in heat conductivity, thus making a concave mirror partially. Therefore, this part can be used as a magnifying glass.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4436378A JPS54136977A (en) | 1978-04-14 | 1978-04-14 | Mirror device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4436378A JPS54136977A (en) | 1978-04-14 | 1978-04-14 | Mirror device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54136977A true JPS54136977A (en) | 1979-10-24 |
Family
ID=12689418
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4436378A Pending JPS54136977A (en) | 1978-04-14 | 1978-04-14 | Mirror device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54136977A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4773748A (en) * | 1984-10-09 | 1988-09-27 | Hughes Aircraft Company | Dynamically controlled mirror for reduction of projected image distortion |
-
1978
- 1978-04-14 JP JP4436378A patent/JPS54136977A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4773748A (en) * | 1984-10-09 | 1988-09-27 | Hughes Aircraft Company | Dynamically controlled mirror for reduction of projected image distortion |
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