FR2177774A1 - - Google Patents
Info
- Publication number
- FR2177774A1 FR2177774A1 FR7307000A FR7307000A FR2177774A1 FR 2177774 A1 FR2177774 A1 FR 2177774A1 FR 7307000 A FR7307000 A FR 7307000A FR 7307000 A FR7307000 A FR 7307000A FR 2177774 A1 FR2177774 A1 FR 2177774A1
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/208—Filters for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/281—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for attenuating light intensity, e.g. comprising rotatable polarising elements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Eyeglasses (AREA)
- Optical Filters (AREA)
- Polarising Elements (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US23040872A | 1972-02-29 | 1972-02-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2177774A1 true FR2177774A1 (US07709020-20100504-C00068.png) | 1973-11-09 |
| FR2177774B1 FR2177774B1 (US07709020-20100504-C00068.png) | 1976-11-05 |
Family
ID=22865106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7307000A Expired FR2177774B1 (US07709020-20100504-C00068.png) | 1972-02-29 | 1973-02-28 |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS4895850A (US07709020-20100504-C00068.png) |
| DE (1) | DE2309732A1 (US07709020-20100504-C00068.png) |
| FR (1) | FR2177774B1 (US07709020-20100504-C00068.png) |
| IT (1) | IT979490B (US07709020-20100504-C00068.png) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS594820B2 (ja) * | 1974-05-20 | 1984-02-01 | 大日本印刷株式会社 | 色分離フイルタ−の製造法 |
-
1973
- 1973-02-26 IT IT2086873A patent/IT979490B/it active
- 1973-02-27 JP JP2274173A patent/JPS4895850A/ja active Pending
- 1973-02-27 DE DE19732309732 patent/DE2309732A1/de active Pending
- 1973-02-28 FR FR7307000A patent/FR2177774B1/fr not_active Expired
Non-Patent Citations (1)
| Title |
|---|
| NEANT * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2309732A1 (de) | 1973-09-06 |
| FR2177774B1 (US07709020-20100504-C00068.png) | 1976-11-05 |
| JPS4895850A (US07709020-20100504-C00068.png) | 1973-12-08 |
| IT979490B (it) | 1974-09-30 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |