FR2626681B1 - VARIABLE FOCAL LENS FOR VERY CLOSER FOCUSING - Google Patents
VARIABLE FOCAL LENS FOR VERY CLOSER FOCUSINGInfo
- Publication number
- FR2626681B1 FR2626681B1 FR8801167A FR8801167A FR2626681B1 FR 2626681 B1 FR2626681 B1 FR 2626681B1 FR 8801167 A FR8801167 A FR 8801167A FR 8801167 A FR8801167 A FR 8801167A FR 2626681 B1 FR2626681 B1 FR 2626681B1
- Authority
- FR
- France
- Prior art keywords
- variable focal
- focal lens
- focusing
- closer
- closer focusing
- 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.)
- Expired - Lifetime
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/22—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with movable lens means specially adapted for focusing at close distances
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8801167A FR2626681B1 (en) | 1988-02-02 | 1988-02-02 | VARIABLE FOCAL LENS FOR VERY CLOSER FOCUSING |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8801167A FR2626681B1 (en) | 1988-02-02 | 1988-02-02 | VARIABLE FOCAL LENS FOR VERY CLOSER FOCUSING |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2626681A1 FR2626681A1 (en) | 1989-08-04 |
FR2626681B1 true FR2626681B1 (en) | 1992-11-20 |
Family
ID=9362848
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8801167A Expired - Lifetime FR2626681B1 (en) | 1988-02-02 | 1988-02-02 | VARIABLE FOCAL LENS FOR VERY CLOSER FOCUSING |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2626681B1 (en) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4161756A (en) * | 1976-03-19 | 1979-07-17 | Jos. Schneider & Co. Optische Werke | Control system for varifocal objective |
JPS6110047B2 (en) * | 1978-03-23 | 1986-03-27 | Canon Kk | |
DE2950951A1 (en) * | 1978-12-25 | 1980-07-10 | Canon Kk | PHOTOGRAPHIC LENS WITH STABILIZATION AGAINST AN IMAGE ANGLE CHANGE DURING FOCUSING |
JPS6151772B2 (en) * | 1981-06-19 | 1986-11-10 | Nippon Kogaku Kk |
-
1988
- 1988-02-02 FR FR8801167A patent/FR2626681B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR2626681A1 (en) | 1989-08-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property | ||
ST | Notification of lapse | ||
RN | Application for restoration | ||
D3 | Decision to revoke the decision of lapse |