DE2519991A1 - Projektionssystem - Google Patents
ProjektionssystemInfo
- Publication number
- DE2519991A1 DE2519991A1 DE19752519991 DE2519991A DE2519991A1 DE 2519991 A1 DE2519991 A1 DE 2519991A1 DE 19752519991 DE19752519991 DE 19752519991 DE 2519991 A DE2519991 A DE 2519991A DE 2519991 A1 DE2519991 A1 DE 2519991A1
- Authority
- DE
- Germany
- Prior art keywords
- lens
- projection system
- image
- focal length
- lens group
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000000463 material Substances 0.000 claims description 12
- 239000005331 crown glasses (windows) Substances 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 4
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 2
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 2
- 229920002994 synthetic fiber Polymers 0.000 claims description 2
- 239000000057 synthetic resin Substances 0.000 claims description 2
- 229920003002 synthetic resin Polymers 0.000 claims description 2
- 230000002349 favourable effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- -1 for example Polymers 0.000 description 1
- 230000005499 meniscus Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Medicines Containing Plant Substances (AREA)
- External Artificial Organs (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7407134A SE382262B (sv) | 1974-05-29 | 1974-05-29 | Projektionsoptik. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2519991A1 true DE2519991A1 (de) | 1975-12-18 |
Family
ID=20321270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19752519991 Withdrawn DE2519991A1 (de) | 1974-05-29 | 1975-05-05 | Projektionssystem |
Country Status (21)
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 (ja) * | 1988-06-14 | 1997-12-17 | 旭光学工業株式会社 | 拡大投影レンズ |
| JP2954217B2 (ja) * | 1987-12-09 | 1999-09-27 | 株式会社日立製作所 | 投写用レンズ |
-
1974
- 1974-05-29 SE SE7407134A patent/SE382262B/xx not_active IP Right Cessation
-
1975
- 1975-04-24 NO NO751480A patent/NO139872C/no unknown
- 1975-04-25 ES ES436963A patent/ES436963A1/es not_active Expired
- 1975-04-25 GB GB1726775A patent/GB1474847A/en not_active Expired
- 1975-04-30 IT IT22916/75A patent/IT1037780B/it active
- 1975-05-01 CA CA226,075A patent/CA1050314A/en not_active Expired
- 1975-05-05 DE DE19752519991 patent/DE2519991A1/de not_active Withdrawn
- 1975-05-15 FR FR7515205A patent/FR2273290B1/fr not_active Expired
- 1975-05-26 AT AT398475A patent/AT351828B/de not_active IP Right Cessation
- 1975-05-26 FI FI751515A patent/FI751515A7/fi not_active Application Discontinuation
- 1975-05-26 BE BE156716A patent/BE829494A/xx unknown
- 1975-05-26 SU SU752136683A patent/SU625640A3/ru active
- 1975-05-27 DD DD186283A patent/DD120942A5/xx unknown
- 1975-05-27 HU HU75LI276A patent/HU175781B/hu unknown
- 1975-05-27 BR BR4278/75A patent/BR7503348A/pt unknown
- 1975-05-27 CH CH679275A patent/CH585910A5/xx not_active IP Right Cessation
- 1975-05-28 DK DK238075A patent/DK238075A/da unknown
- 1975-05-28 JP JP50063946A patent/JPS513228A/ja active Pending
- 1975-05-28 PL PL1975180786A patent/PL104910B1/pl unknown
- 1975-05-28 CS CS753750A patent/CS192543B2/cs unknown
- 1975-05-28 NL NL7506296A patent/NL7506296A/xx not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| JPS513228A (enrdf_load_stackoverflow) | 1976-01-12 |
| FI751515A7 (enrdf_load_stackoverflow) | 1975-11-30 |
| FR2273290A1 (enrdf_load_stackoverflow) | 1975-12-26 |
| FR2273290B1 (enrdf_load_stackoverflow) | 1980-07-11 |
| IT1037780B (it) | 1979-11-20 |
| SE382262B (sv) | 1976-01-19 |
| NO139872C (no) | 1979-05-23 |
| SE7407134L (sv) | 1975-12-01 |
| NO751480L (enrdf_load_stackoverflow) | 1975-12-02 |
| DD120942A5 (enrdf_load_stackoverflow) | 1976-07-05 |
| AU8129275A (en) | 1976-11-25 |
| DK238075A (da) | 1975-11-30 |
| BE829494A (fr) | 1975-09-15 |
| CA1050314A (en) | 1979-03-13 |
| CS192543B2 (en) | 1979-08-31 |
| GB1474847A (en) | 1977-05-25 |
| PL104910B1 (pl) | 1979-09-29 |
| ES436963A1 (es) | 1976-12-01 |
| AT351828B (de) | 1979-08-10 |
| SU625640A3 (ru) | 1978-09-25 |
| CH585910A5 (enrdf_load_stackoverflow) | 1977-03-15 |
| ATA398475A (de) | 1979-01-15 |
| BR7503348A (pt) | 1976-04-27 |
| NL7506296A (nl) | 1975-12-02 |
| NO139872B (no) | 1979-02-12 |
| HU175781B (hu) | 1980-10-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8139 | Disposal/non-payment of the annual fee |