IT942317B - VARIABLE FOCAL DISTANCE LENS - Google Patents
VARIABLE FOCAL DISTANCE LENSInfo
- Publication number
- IT942317B IT942317B IT86221/71A IT8622171A IT942317B IT 942317 B IT942317 B IT 942317B IT 86221/71 A IT86221/71 A IT 86221/71A IT 8622171 A IT8622171 A IT 8622171A IT 942317 B IT942317 B IT 942317B
- Authority
- IT
- Italy
- Prior art keywords
- focal distance
- variable focal
- distance lens
- lens
- variable
- 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)
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 |
---|---|
IT942317B true IT942317B (en) | 1973-03-20 |
Family
ID=4278848
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT86221/71A IT942317B (en) | 1970-03-25 | 1971-03-17 | VARIABLE FOCAL DISTANCE LENS |
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 |
---|---|
CH522230A (en) | 1972-06-15 |
DE2114073A1 (en) | 1971-10-14 |
AT301206B (en) | 1972-08-25 |
GB1336768A (en) | 1973-11-07 |
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