JPS556364A - Production of nd filter - Google Patents
Production of nd filterInfo
- Publication number
- JPS556364A JPS556364A JP7894178A JP7894178A JPS556364A JP S556364 A JPS556364 A JP S556364A JP 7894178 A JP7894178 A JP 7894178A JP 7894178 A JP7894178 A JP 7894178A JP S556364 A JPS556364 A JP S556364A
- Authority
- JP
- Japan
- Prior art keywords
- metal
- substrate
- metal plates
- metal plate
- vacuum chamber
- 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
- Physical Vapour Deposition (AREA)
- Optical Filters (AREA)
Abstract
PURPOSE: To prolong thin film forming time, make possible controlling within a delicate range of thin film formation and increase adhesion strength to substrate by disposing the substrate on the outer side of opposing electrodes within a vacuum chamber sealed with low pressure gas.
CONSTITUTION: The inside of a vacuum chamber 1 is evacuated through conduit 2 and inert gas such as argon gas is sealed under low pressure. Metal plates 4 and 5 having no wavelength selective absorption in a visible region are opposedly disposed perpendicularly parallel by leaving a specified spacing in the vacuum chamber 1. A metal plate 7 of the same kind as the metal plates 4, 5 is disposed above the metal plates 4, 5 in proximity to their intermediate. To the bottom face thereof is bonded a substrate 8 of a smaller area than the metal plate 7 which becomes the blank for the ND filter. Discharge is caused between the metal plates 4, 5 by connecting the metal plate 7 to the negative electrode side of a DC variable power source 9 and connecting a high voltage power source 6 to the metal plates 4, 5, thereby allowing cations to be formed from the gas. The cations, accelerated by the electric field between the metal electrodes 4 and 5, impinge vigorously against the surface of the metal plate on one side and the atoms of the metal driven out deposit on the surface of the substrate 8.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7894178A JPS556364A (en) | 1978-06-29 | 1978-06-29 | Production of nd filter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7894178A JPS556364A (en) | 1978-06-29 | 1978-06-29 | Production of nd filter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS556364A true JPS556364A (en) | 1980-01-17 |
Family
ID=13675900
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7894178A Pending JPS556364A (en) | 1978-06-29 | 1978-06-29 | Production of nd filter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS556364A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59159426U (en) * | 1983-04-11 | 1984-10-25 | 埼玉化工株式会社 | Gum pine surgical device |
JPS6182705A (en) * | 1984-09-28 | 1986-04-26 | 株式会社東芝 | Electromotive toothbrush |
-
1978
- 1978-06-29 JP JP7894178A patent/JPS556364A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59159426U (en) * | 1983-04-11 | 1984-10-25 | 埼玉化工株式会社 | Gum pine surgical device |
JPS6182705A (en) * | 1984-09-28 | 1986-04-26 | 株式会社東芝 | Electromotive toothbrush |
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