DD138108A1 - Ringfoermige abbildungsoptik - Google Patents
Ringfoermige abbildungsoptikInfo
- Publication number
- DD138108A1 DD138108A1 DD20705978A DD20705978A DD138108A1 DD 138108 A1 DD138108 A1 DD 138108A1 DD 20705978 A DD20705978 A DD 20705978A DD 20705978 A DD20705978 A DD 20705978A DD 138108 A1 DD138108 A1 DD 138108A1
- Authority
- DD
- German Democratic Republic
- Prior art keywords
- ringful
- picture optics
- optics
- picture
- ringful picture
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/02—Simple or compound lenses with non-spherical faces
- G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DD20705978A DD138108A1 (de) | 1978-08-01 | 1978-08-01 | Ringfoermige abbildungsoptik |
DE19792928535 DE2928535A1 (de) | 1978-08-01 | 1979-07-14 | Ringfoermige abbildungsoptik |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DD20705978A DD138108A1 (de) | 1978-08-01 | 1978-08-01 | Ringfoermige abbildungsoptik |
Publications (1)
Publication Number | Publication Date |
---|---|
DD138108A1 true DD138108A1 (de) | 1979-10-10 |
Family
ID=5513856
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DD20705978A DD138108A1 (de) | 1978-08-01 | 1978-08-01 | Ringfoermige abbildungsoptik |
Country Status (2)
Country | Link |
---|---|
DD (1) | DD138108A1 (de) |
DE (1) | DE2928535A1 (de) |
-
1978
- 1978-08-01 DD DD20705978A patent/DD138108A1/de not_active IP Right Cessation
-
1979
- 1979-07-14 DE DE19792928535 patent/DE2928535A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
DE2928535A1 (de) | 1980-02-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ENJ | Ceased due to non-payment of renewal fee |