CH482207A - Variable focal length lens - Google Patents
Variable focal length lensInfo
- Publication number
- CH482207A CH482207A CH60768A CH60768A CH482207A CH 482207 A CH482207 A CH 482207A CH 60768 A CH60768 A CH 60768A CH 60768 A CH60768 A CH 60768A CH 482207 A CH482207 A CH 482207A
- Authority
- CH
- Switzerland
- Prior art keywords
- focal length
- length lens
- variable focal
- variable
- lens
- Prior art date
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
- G02B15/145—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 having five groups only
- G02B15/1455—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 having five groups only the first group being negative
- G02B15/145511—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 having five groups only the first group being negative arranged -+-+-
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2231/67A GB1167373A (en) | 1967-01-16 | 1967-01-16 | Optical Objective of Variable Focal Length |
Publications (1)
Publication Number | Publication Date |
---|---|
CH482207A true CH482207A (en) | 1969-11-30 |
Family
ID=9735906
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH60768A CH482207A (en) | 1967-01-16 | 1966-01-16 | Variable focal length lens |
Country Status (5)
Country | Link |
---|---|
CH (1) | CH482207A (en) |
DE (1) | DE1622990A1 (en) |
FR (1) | FR1560457A (en) |
GB (1) | GB1167373A (en) |
NL (1) | NL6800621A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5040144A (en) * | 1973-08-17 | 1975-04-12 | ||
GB2253281B (en) * | 1991-02-15 | 1994-05-25 | Asahi Optical Co Ltd | Zoom lens |
-
1966
- 1966-01-16 CH CH60768A patent/CH482207A/en not_active IP Right Cessation
-
1967
- 1967-01-16 GB GB2231/67A patent/GB1167373A/en not_active Expired
-
1968
- 1968-01-10 DE DE19681622990 patent/DE1622990A1/en active Pending
- 1968-01-15 NL NL6800621A patent/NL6800621A/xx unknown
- 1968-01-16 FR FR1560457D patent/FR1560457A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1622990A1 (en) | 1972-01-05 |
FR1560457A (en) | 1969-03-21 |
GB1167373A (en) | 1969-10-15 |
NL6800621A (en) | 1968-07-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |