JPS64501A - Production of reflecting mirror - Google Patents
Production of reflecting mirrorInfo
- Publication number
- JPS64501A JPS64501A JP21160687A JP21160687A JPS64501A JP S64501 A JPS64501 A JP S64501A JP 21160687 A JP21160687 A JP 21160687A JP 21160687 A JP21160687 A JP 21160687A JP S64501 A JPS64501 A JP S64501A
- Authority
- JP
- Japan
- Prior art keywords
- reflecting mirror
- backing metal
- base material
- metallic film
- shape
- 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
- Optical Elements Other Than Lenses (AREA)
Abstract
PURPOSE: To produce a reflecting mirror having a desired shape and size with high accuracy by forming an electrocasting layer and backing metal on a thin metallic film coated and formed on the outside peripheral face of a base material having the same shape as the shape of the hole of the reflecting mirror and separating the electrocasting layer and the backing metal from the base material with the thin metallic film as a boundary by a difference in coefft. of thermal expansion.
CONSTITUTION: The thin metallic film 2 is coated on the outside peripheral face of the base material 1 worked and prepd. to the same shape as the shape of the hole of the reflecting mirror and the electrocasting layer 4 is formed on this thin metallic film 2. The backing metal 3 is formed on this electrocasting layer 4. The electrocasting layer 4 and the backing metal 3 are separated from the base material 1 with the thin metallic film 2 acting as a release material as a boundary by the difference in the coefft. of thermal expansion when an abrupt temp. change is applied to the base material 1 formed with this backing metal 3. The reflecting mirror 5 consisting of the electrocasting layer 4 to serve as a reflecting surface and the backing metal 3 is thus produced. The inexpensive mass production of the reflecting mirror 5 having the desired shape and size with high accuracy is thereby enabled without receiving the restrictions on the shape and size arising from the working stages.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-211606A JPH01501A (en) | 1987-03-13 | 1987-08-26 | Reflector manufacturing method |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-58131 | 1987-03-13 | ||
JP5813187 | 1987-03-13 | ||
JP62-211606A JPH01501A (en) | 1987-03-13 | 1987-08-26 | Reflector manufacturing method |
Publications (3)
Publication Number | Publication Date |
---|---|
JPS64501A true JPS64501A (en) | 1989-01-05 |
JPH01501A JPH01501A (en) | 1989-01-05 |
JPH0517524B2 JPH0517524B2 (en) | 1993-03-09 |
Family
ID=
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4807516A (en) * | 1987-04-23 | 1989-02-28 | The Boeing Company | Flight control system employing three controllers operating a dual actuator |
KR101250004B1 (en) * | 2010-07-02 | 2013-04-05 | 최영락 | Reflector by electroforming and method of fabrication the same |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55131191A (en) * | 1979-03-30 | 1980-10-11 | Toshiba Corp | Preparation of metallic mirror |
JPS57210994A (en) * | 1981-06-22 | 1982-12-24 | Mitsubishi Electric Corp | Production of reflecting mirror |
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55131191A (en) * | 1979-03-30 | 1980-10-11 | Toshiba Corp | Preparation of metallic mirror |
JPS57210994A (en) * | 1981-06-22 | 1982-12-24 | Mitsubishi Electric Corp | Production of reflecting mirror |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4807516A (en) * | 1987-04-23 | 1989-02-28 | The Boeing Company | Flight control system employing three controllers operating a dual actuator |
KR101250004B1 (en) * | 2010-07-02 | 2013-04-05 | 최영락 | Reflector by electroforming and method of fabrication the same |
Also Published As
Publication number | Publication date |
---|---|
JPH0517524B2 (en) | 1993-03-09 |
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