FR2256422A1 - - Google Patents
Info
- Publication number
- FR2256422A1 FR2256422A1 FR7500051A FR7500051A FR2256422A1 FR 2256422 A1 FR2256422 A1 FR 2256422A1 FR 7500051 A FR7500051 A FR 7500051A FR 7500051 A FR7500051 A FR 7500051A FR 2256422 A1 FR2256422 A1 FR 2256422A1
- Authority
- FR
- France
- 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.)
- Granted
Links
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B17/00—Systems with reflecting surfaces, with or without refracting elements
- G02B17/08—Catadioptric systems
- G02B17/0856—Catadioptric systems comprising a refractive element with a reflective surface, the reflection taking place inside the element, e.g. Mangin mirrors
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/24—Optical objectives specially designed for the purposes specified below for reproducing or copying at short object distances
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B17/00—Systems with reflecting surfaces, with or without refracting elements
- G02B17/008—Systems specially adapted to form image relays or chained systems
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9574A GB1443271A (en) | 1974-01-02 | 1974-01-02 | Reflex lens systems |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2256422A1 true FR2256422A1 (en, 2012) | 1975-07-25 |
| FR2256422B3 FR2256422B3 (en, 2012) | 1977-09-30 |
Family
ID=9698312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7500051A Expired FR2256422B3 (en, 2012) | 1974-01-02 | 1975-01-02 |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS50107926A (en, 2012) |
| DE (1) | DE2500070A1 (en, 2012) |
| FR (1) | FR2256422B3 (en, 2012) |
| GB (1) | GB1443271A (en, 2012) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6019484B2 (ja) * | 1975-11-07 | 1985-05-16 | キヤノン株式会社 | 複写用レンズ |
| US4056308A (en) * | 1976-03-03 | 1977-11-01 | Xerox Corporation | Variable focal length reflector lens system |
| US4060312A (en) * | 1976-09-03 | 1977-11-29 | Bell & Howell Company | Copier lens of reflex design |
| US4062625A (en) * | 1976-09-03 | 1977-12-13 | Bell & Howell Company | Reflex copier lens |
| US4108539A (en) * | 1976-11-18 | 1978-08-22 | Hewlett-Packard Company | Reflecting lens system |
| US4171871A (en) * | 1977-06-30 | 1979-10-23 | International Business Machines Corporation | Achromatic unit magnification optical system |
| US4344676A (en) * | 1979-10-09 | 1982-08-17 | The Perkin-Elmer Corporation | Single element spherical surfaced optics insensitive to wavelength and temperature |
| US5052763A (en) * | 1990-08-28 | 1991-10-01 | International Business Machines Corporation | Optical system with two subsystems separately correcting odd aberrations and together correcting even aberrations |
-
1974
- 1974-01-02 GB GB9574A patent/GB1443271A/en not_active Expired
- 1974-12-28 JP JP49149288A patent/JPS50107926A/ja active Pending
-
1975
- 1975-01-02 FR FR7500051A patent/FR2256422B3/fr not_active Expired
- 1975-01-02 DE DE19752500070 patent/DE2500070A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR2256422B3 (en, 2012) | 1977-09-30 |
| GB1443271A (en) | 1976-07-21 |
| DE2500070A1 (de) | 1975-07-10 |
| JPS50107926A (en, 2012) | 1975-08-25 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |