JPS5677808A - Preventing device for internal reflection of zoom lens - Google Patents
Preventing device for internal reflection of zoom lensInfo
- Publication number
- JPS5677808A JPS5677808A JP15389279A JP15389279A JPS5677808A JP S5677808 A JPS5677808 A JP S5677808A JP 15389279 A JP15389279 A JP 15389279A JP 15389279 A JP15389279 A JP 15389279A JP S5677808 A JPS5677808 A JP S5677808A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- frame
- reflected light
- even during
- movable
- 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)
- Mounting And Adjusting Of Optical Elements (AREA)
Abstract
PURPOSE: To enable a simple constitution to cut securely harmful reflected light even during long-focus setting, by supporting a shielding wall by the frame of a correcting lens that moves according to the focal length.
CONSTITUTION: Correcting lens 5 forming the zoom lens system together with movable lnes 4 for variation in magnification moves in the direction of the optical axis in one body together with lens frame 5a moving through cam groove 10, pin 7, etc., according to the operation of zoom operation ring 9. Since shielding wall of required length is fixed to this frame 5a, wall 11 responds to movable lens 4 to cut securely harmful reflected light from lens barrel 2 by the simple consitution even during long-focal-length setting, so that only photographing luminous flux with no flare incident from focusing lens 1 will be image-formed by way of lens barrel 2.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15389279A JPS5677808A (en) | 1979-11-28 | 1979-11-28 | Preventing device for internal reflection of zoom lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15389279A JPS5677808A (en) | 1979-11-28 | 1979-11-28 | Preventing device for internal reflection of zoom lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5677808A true JPS5677808A (en) | 1981-06-26 |
| JPS6242248B2 JPS6242248B2 (en) | 1987-09-07 |
Family
ID=15572386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15389279A Granted JPS5677808A (en) | 1979-11-28 | 1979-11-28 | Preventing device for internal reflection of zoom lens |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5677808A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61140312U (en) * | 1985-02-21 | 1986-08-30 | ||
| JPH0289412U (en) * | 1988-12-27 | 1990-07-16 | ||
| JP2000081556A (en) * | 1998-09-04 | 2000-03-21 | Tamron Co Ltd | Inner focus zoom lens having flare cutter mechanism |
| EP1688773A1 (en) * | 2005-02-04 | 2006-08-09 | Fujinon Corporation | Lens device with a light shielding member |
| CN112684568A (en) * | 2020-12-30 | 2021-04-20 | 上海比路电子股份有限公司 | Periscopic motor with continuous optical zooming |
-
1979
- 1979-11-28 JP JP15389279A patent/JPS5677808A/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61140312U (en) * | 1985-02-21 | 1986-08-30 | ||
| JPH0289412U (en) * | 1988-12-27 | 1990-07-16 | ||
| JP2000081556A (en) * | 1998-09-04 | 2000-03-21 | Tamron Co Ltd | Inner focus zoom lens having flare cutter mechanism |
| EP1688773A1 (en) * | 2005-02-04 | 2006-08-09 | Fujinon Corporation | Lens device with a light shielding member |
| US7203009B2 (en) | 2005-02-04 | 2007-04-10 | Fujinon Corporation | Lens device |
| CN112684568A (en) * | 2020-12-30 | 2021-04-20 | 上海比路电子股份有限公司 | Periscopic motor with continuous optical zooming |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6242248B2 (en) | 1987-09-07 |
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