JPS54136977A - Mirror device - Google Patents

Mirror device

Info

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
Application number
JP4436378A
Other languages
Japanese (ja)
Inventor
Kazuo Watanabe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP4436378A priority Critical patent/JPS54136977A/en
Publication of JPS54136977A publication Critical patent/JPS54136977A/en
Pending legal-status Critical Current

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
JP4436378A 1978-04-14 1978-04-14 Mirror device Pending JPS54136977A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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