JPS5237425A - Helicoid for photographic lens - Google Patents
Helicoid for photographic lensInfo
- Publication number
- JPS5237425A JPS5237425A JP11321775A JP11321775A JPS5237425A JP S5237425 A JPS5237425 A JP S5237425A JP 11321775 A JP11321775 A JP 11321775A JP 11321775 A JP11321775 A JP 11321775A JP S5237425 A JPS5237425 A JP S5237425A
- Authority
- JP
- Japan
- Prior art keywords
- helicoid
- photographic lens
- providing
- lubricating oil
- around
- 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
- Focusing (AREA)
- Lens Barrels (AREA)
- Automatic Focus Adjustment (AREA)
- Transmission Devices (AREA)
Abstract
PURPOSE: To obtain a helicoid for the photographic lens of a smooth operation wherein a lubricating oil is never leaked out by providing a divided helicoid screw around the outer circumference of a helicoid cylinder and providing an oil sump groove for the lubricating oil around each screw portion.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11321775A JPS5848881B2 (en) | 1975-09-19 | 1975-09-19 | lens barrel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11321775A JPS5848881B2 (en) | 1975-09-19 | 1975-09-19 | lens barrel |
Related Child Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16038482A Division JPS5878108A (en) | 1982-09-14 | 1982-09-14 | Lens barrel having straight helicoid cylinder |
JP7242383A Division JPS58193506A (en) | 1983-04-25 | 1983-04-25 | Lens barrel |
JP7242483A Division JPS58193507A (en) | 1983-04-25 | 1983-04-25 | Plastic lens barrel |
JP16439784A Division JPS6063511A (en) | 1984-08-06 | 1984-08-06 | Lens barrel |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5237425A true JPS5237425A (en) | 1977-03-23 |
JPS5848881B2 JPS5848881B2 (en) | 1983-10-31 |
Family
ID=14606531
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11321775A Expired JPS5848881B2 (en) | 1975-09-19 | 1975-09-19 | lens barrel |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5848881B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54170210U (en) * | 1978-05-15 | 1979-12-01 | ||
JPS5742658U (en) * | 1980-08-22 | 1982-03-08 | ||
JPS6343116U (en) * | 1987-01-08 | 1988-03-23 | ||
JPH08304683A (en) * | 1996-05-08 | 1996-11-22 | Olympus Optical Co Ltd | Lens barrel |
-
1975
- 1975-09-19 JP JP11321775A patent/JPS5848881B2/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54170210U (en) * | 1978-05-15 | 1979-12-01 | ||
JPS5742658U (en) * | 1980-08-22 | 1982-03-08 | ||
JPS6343116U (en) * | 1987-01-08 | 1988-03-23 | ||
JPS6344812Y2 (en) * | 1987-01-08 | 1988-11-21 | ||
JPH08304683A (en) * | 1996-05-08 | 1996-11-22 | Olympus Optical Co Ltd | Lens barrel |
Also Published As
Publication number | Publication date |
---|---|
JPS5848881B2 (en) | 1983-10-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB2026649B (en) | Piston having at least one piston ring groove | |
JPS5237425A (en) | Helicoid for photographic lens | |
JPS5388440A (en) | Static pressure bearing guide | |
JPS5315610A (en) | Screw fluid machine | |
JPS52149877A (en) | Fluid balancer of full-automatic washers | |
JPS53141851A (en) | Step shaft | |
AU506311B2 (en) | Spacer-expander fora piston oil control ring | |
GB2008550A (en) | Closure | |
JPS5234725A (en) | Cam cylinder for zoom lens | |
JPS5238943A (en) | Multi-focus lens | |
JPS5370237A (en) | Libricating oil cooling system for piston and cylinder | |
FR2350524A1 (en) | MACHINE SHAFT SEALING RING FOR HIGH PRESSURES | |
JPS52108575A (en) | Twice lowering preventing device for a press | |
JPS524954A (en) | Bearing apparatus of the hydraulic machine | |
JPS5218560A (en) | Connecting rod | |
JPS5433928A (en) | Lubrication device for engine cylinders | |
JPS5224303A (en) | A compressor | |
JPS525002A (en) | Case cylinder of oil-pump for a oilstove | |
JPS5434102A (en) | Axial piston machine | |
JPS52156255A (en) | Vibration damping bearing | |
JPS51116407A (en) | An oil pump for automatic transmission of automobiles | |
JPS5241579A (en) | Device for measuring of performance of lubricating oil | |
JPS5378415A (en) | Rotary piston machine | |
JPS5212884A (en) | Cylindrical abrasion tester for cylinders | |
JPS5245872A (en) | Resin sealing machine |