JPS6442614A - Lens holding device - Google Patents
Lens holding deviceInfo
- Publication number
- JPS6442614A JPS6442614A JP19812287A JP19812287A JPS6442614A JP S6442614 A JPS6442614 A JP S6442614A JP 19812287 A JP19812287 A JP 19812287A JP 19812287 A JP19812287 A JP 19812287A JP S6442614 A JPS6442614 A JP S6442614A
- Authority
- JP
- Japan
- Prior art keywords
- outer frame
- optical axis
- lens barrel
- adjusting
- adjustment
- 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
- Lens Barrels (AREA)
Abstract
PURPOSE:To easily obtain an optimum position of a back-focal distance by driving a gear of a lens barrel fitted to an outer frame by turning an adjusting shaft, and moving the lens barrel in the optical axis direction against the outer frame by a rotation of a screw. CONSTITUTION:To a square hole 34 for adjustment use of an outer frame 30, an adjusting jig having a pinion engaged to a spur gear 28 of split lens barrels 13, 14 is attached. In this state, when the spur gear 28 is driven, the split lens barrels 13, 14 rotate against the outer frame 30, and by an operation of two lines of internal and external screws 33, 27 which are fitted, the split lens barrels 13, 14 move in the direction of an optical axis 12 against the outer frame 30. In such a way, at the time of adjusting a back-focal distance, the moving extent in the optical axis direction of the lens barrel is in direct proportion to an angle of rotation of an adjusting shaft, and also, its direction is constant, therefore, the workability is satisfactory, the adjustment is facilitated, and also, the adjustment accuracy is improved.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19812287A JPH0687091B2 (en) | 1987-08-10 | 1987-08-10 | Lens holding device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19812287A JPH0687091B2 (en) | 1987-08-10 | 1987-08-10 | Lens holding device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6442614A true JPS6442614A (en) | 1989-02-14 |
JPH0687091B2 JPH0687091B2 (en) | 1994-11-02 |
Family
ID=16385820
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19812287A Expired - Fee Related JPH0687091B2 (en) | 1987-08-10 | 1987-08-10 | Lens holding device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0687091B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004212982A (en) * | 2003-01-03 | 2004-07-29 | Agilent Technol Inc | Camera and lens position setting method |
JP2004354519A (en) * | 2003-05-27 | 2004-12-16 | Mitsubishi Electric Corp | Image pickup apparatus and focusing device for image pickup apparatus |
JP2008164893A (en) * | 2006-12-28 | 2008-07-17 | Kantatsu Co Ltd | Lens extension unit for macrophotography |
JP2018205353A (en) * | 2017-05-30 | 2018-12-27 | リコーインダストリアルソリューションズ株式会社 | Lens barrel and image projection device |
-
1987
- 1987-08-10 JP JP19812287A patent/JPH0687091B2/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004212982A (en) * | 2003-01-03 | 2004-07-29 | Agilent Technol Inc | Camera and lens position setting method |
JP2004354519A (en) * | 2003-05-27 | 2004-12-16 | Mitsubishi Electric Corp | Image pickup apparatus and focusing device for image pickup apparatus |
JP2008164893A (en) * | 2006-12-28 | 2008-07-17 | Kantatsu Co Ltd | Lens extension unit for macrophotography |
JP2018205353A (en) * | 2017-05-30 | 2018-12-27 | リコーインダストリアルソリューションズ株式会社 | Lens barrel and image projection device |
Also Published As
Publication number | Publication date |
---|---|
JPH0687091B2 (en) | 1994-11-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |