DD120942A5 - - Google Patents
Info
- Publication number
- DD120942A5 DD120942A5 DD186283A DD18628375A DD120942A5 DD 120942 A5 DD120942 A5 DD 120942A5 DD 186283 A DD186283 A DD 186283A DD 18628375 A DD18628375 A DD 18628375A DD 120942 A5 DD120942 A5 DD 120942A5
- Authority
- DD
- German Democratic Republic
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
- G02B9/12—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having three components only
- G02B9/14—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having three components only arranged + - +
- G02B9/16—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having three components only arranged + - + all the components being simple
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
- G02B9/34—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having four components only
-
- 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
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7407134A SE382262B (en) | 1974-05-29 | 1974-05-29 | PROJECTION OPTICS. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DD120942A5 true DD120942A5 (en) | 1976-07-05 |
Family
ID=20321270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DD186283A DD120942A5 (en) | 1974-05-29 | 1975-05-27 |
Country Status (21)
| Country | Link |
|---|---|
| JP (1) | JPS513228A (en) |
| AT (1) | AT351828B (en) |
| BE (1) | BE829494A (en) |
| BR (1) | BR7503348A (en) |
| CA (1) | CA1050314A (en) |
| CH (1) | CH585910A5 (en) |
| CS (1) | CS192543B2 (en) |
| DD (1) | DD120942A5 (en) |
| DE (1) | DE2519991A1 (en) |
| DK (1) | DK238075A (en) |
| ES (1) | ES436963A1 (en) |
| FI (1) | FI751515A (en) |
| FR (1) | FR2273290B1 (en) |
| GB (1) | GB1474847A (en) |
| HU (1) | HU175781B (en) |
| IT (1) | IT1037780B (en) |
| NL (1) | NL7506296A (en) |
| NO (1) | NO139872C (en) |
| PL (1) | PL104910B1 (en) |
| SE (1) | SE382262B (en) |
| SU (1) | SU625640A3 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4311366A (en) * | 1978-03-01 | 1982-01-19 | J. H. Dallmeyer Limited | Image focusing system |
| US4380374A (en) * | 1981-04-16 | 1983-04-19 | Minnesota Mining & Manufacturing Company | Variable focal length projection lens for use on overhead projectors |
| JP2691566B2 (en) * | 1988-06-14 | 1997-12-17 | 旭光学工業株式会社 | Magnifying projection lens |
| JP2954217B2 (en) * | 1987-12-09 | 1999-09-27 | 株式会社日立製作所 | Projection lens |
-
1974
- 1974-05-29 SE SE7407134A patent/SE382262B/en not_active IP Right Cessation
-
1975
- 1975-04-24 NO NO751480A patent/NO139872C/en unknown
- 1975-04-25 GB GB1726775A patent/GB1474847A/en not_active Expired
- 1975-04-25 ES ES436963A patent/ES436963A1/en not_active Expired
- 1975-04-30 IT IT22916/75A patent/IT1037780B/en active
- 1975-05-01 CA CA226,075A patent/CA1050314A/en not_active Expired
- 1975-05-05 DE DE19752519991 patent/DE2519991A1/en not_active Withdrawn
- 1975-05-15 FR FR7515205A patent/FR2273290B1/fr not_active Expired
- 1975-05-26 AT AT398475A patent/AT351828B/en not_active IP Right Cessation
- 1975-05-26 BE BE156716A patent/BE829494A/en unknown
- 1975-05-26 FI FI751515A patent/FI751515A/fi not_active Application Discontinuation
- 1975-05-26 SU SU752136683A patent/SU625640A3/en active
- 1975-05-27 CH CH679275A patent/CH585910A5/xx not_active IP Right Cessation
- 1975-05-27 HU HU75LI276A patent/HU175781B/en unknown
- 1975-05-27 DD DD186283A patent/DD120942A5/xx unknown
- 1975-05-27 BR BR4278/75A patent/BR7503348A/en unknown
- 1975-05-28 CS CS753750A patent/CS192543B2/en unknown
- 1975-05-28 PL PL1975180786A patent/PL104910B1/en unknown
- 1975-05-28 JP JP50063946A patent/JPS513228A/ja active Pending
- 1975-05-28 DK DK238075A patent/DK238075A/en unknown
- 1975-05-28 NL NL7506296A patent/NL7506296A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| NO139872B (en) | 1979-02-12 |
| NO139872C (en) | 1979-05-23 |
| HU175781B (en) | 1980-10-28 |
| JPS513228A (en) | 1976-01-12 |
| DE2519991A1 (en) | 1975-12-18 |
| PL104910B1 (en) | 1979-09-29 |
| FI751515A (en) | 1975-11-30 |
| NO751480L (en) | 1975-12-02 |
| AT351828B (en) | 1979-08-10 |
| FR2273290A1 (en) | 1975-12-26 |
| BE829494A (en) | 1975-09-15 |
| DK238075A (en) | 1975-11-30 |
| FR2273290B1 (en) | 1980-07-11 |
| SU625640A3 (en) | 1978-09-25 |
| AU8129275A (en) | 1976-11-25 |
| BR7503348A (en) | 1976-04-27 |
| IT1037780B (en) | 1979-11-20 |
| CS192543B2 (en) | 1979-08-31 |
| SE382262B (en) | 1976-01-19 |
| NL7506296A (en) | 1975-12-02 |
| ATA398475A (en) | 1979-01-15 |
| CH585910A5 (en) | 1977-03-15 |
| CA1050314A (en) | 1979-03-13 |
| GB1474847A (en) | 1977-05-25 |
| SE7407134L (en) | 1975-12-01 |
| ES436963A1 (en) | 1976-12-01 |