JPS54159253A - High accuracy slit rotating drum - Google Patents
High accuracy slit rotating drumInfo
- Publication number
- JPS54159253A JPS54159253A JP6773078A JP6773078A JPS54159253A JP S54159253 A JPS54159253 A JP S54159253A JP 6773078 A JP6773078 A JP 6773078A JP 6773078 A JP6773078 A JP 6773078A JP S54159253 A JPS54159253 A JP S54159253A
- Authority
- JP
- Japan
- Prior art keywords
- slits
- film
- step part
- width
- desired pitch
- 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
- Mechanical Light Control Or Optical Switches (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Optical Transform (AREA)
Abstract
PURPOSE: To realize a highly accurate slit rotating drum by sligning the respective slit positions through the utilization of thermal expansion of a ring which is formed with slits at a desired pitch then fixing a film to the drum body in close contact therewith.
CONSTITUTION: A step part 63 for mounting a film is formed across a desired width from the opening end of a bottomed-cylinder-form drum body 61 and its inside diameter is finished to a desired size. Slits 62 of a slightly oversized width are then provided at a desired pitch. A film 44 which has been formed with slits 45 of a width several μ at a desired pitch with high accuracy is put in the inner side of this step part 63 with their slit positions being aligned. A ring 64 which has a press- fit outside diameter at ordinary temperature and which has been provided with slits 65 of a slightly oversized width at a desired pitch is cooled to shrink and is fitted in the step part 63 and on the inner side of the film 44 with their slit positions being aligned. The ring is then returned to ordinary temperature whereby it is closely fitted and fixed to the inside surface of the step part 63.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6773078A JPS6026441B2 (en) | 1978-06-07 | 1978-06-07 | High precision slit rotating drum |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6773078A JPS6026441B2 (en) | 1978-06-07 | 1978-06-07 | High precision slit rotating drum |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54159253A true JPS54159253A (en) | 1979-12-15 |
JPS6026441B2 JPS6026441B2 (en) | 1985-06-24 |
Family
ID=13353357
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6773078A Expired JPS6026441B2 (en) | 1978-06-07 | 1978-06-07 | High precision slit rotating drum |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6026441B2 (en) |
-
1978
- 1978-06-07 JP JP6773078A patent/JPS6026441B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6026441B2 (en) | 1985-06-24 |
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