CH522230A - Lens with adjustable focal length - Google Patents
Lens with adjustable focal lengthInfo
- Publication number
- CH522230A CH522230A CH458670A CH458670A CH522230A CH 522230 A CH522230 A CH 522230A CH 458670 A CH458670 A CH 458670A CH 458670 A CH458670 A CH 458670A CH 522230 A CH522230 A CH 522230A
- Authority
- CH
- Switzerland
- Prior art keywords
- lens
- focal length
- adjustable focal
- adjustable
- length
- 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
- G02B15/146—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 more than five groups
- G02B15/1465—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 more than five groups the first group being negative
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH458670A CH522230A (en) | 1970-03-25 | 1970-03-25 | Lens with adjustable focal length |
IT86221/71A IT942317B (en) | 1970-03-25 | 1971-03-17 | VARIABLE FOCAL DISTANCE LENS |
AT231971A AT301206B (en) | 1970-03-25 | 1971-03-17 | Lens with adjustable focal length |
DE19712114073 DE2114073A1 (en) | 1970-03-25 | 1971-03-23 | Lens with adjustable focal length |
GB2530571*A GB1336768A (en) | 1970-03-25 | 1971-04-19 | Lenses |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH458670A CH522230A (en) | 1970-03-25 | 1970-03-25 | Lens with adjustable focal length |
Publications (1)
Publication Number | Publication Date |
---|---|
CH522230A true CH522230A (en) | 1972-06-15 |
Family
ID=4278848
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH458670A CH522230A (en) | 1970-03-25 | 1970-03-25 | Lens with adjustable focal length |
Country Status (5)
Country | Link |
---|---|
AT (1) | AT301206B (en) |
CH (1) | CH522230A (en) |
DE (1) | DE2114073A1 (en) |
GB (1) | GB1336768A (en) |
IT (1) | IT942317B (en) |
-
1970
- 1970-03-25 CH CH458670A patent/CH522230A/en not_active IP Right Cessation
-
1971
- 1971-03-17 AT AT231971A patent/AT301206B/en not_active IP Right Cessation
- 1971-03-17 IT IT86221/71A patent/IT942317B/en active
- 1971-03-23 DE DE19712114073 patent/DE2114073A1/en active Pending
- 1971-04-19 GB GB2530571*A patent/GB1336768A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2114073A1 (en) | 1971-10-14 |
AT301206B (en) | 1972-08-25 |
IT942317B (en) | 1973-03-20 |
GB1336768A (en) | 1973-11-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |