FR2315704B1 - - Google Patents
Info
- Publication number
- FR2315704B1 FR2315704B1 FR7618852A FR7618852A FR2315704B1 FR 2315704 B1 FR2315704 B1 FR 2315704B1 FR 7618852 A FR7618852 A FR 7618852A FR 7618852 A FR7618852 A FR 7618852A FR 2315704 B1 FR2315704 B1 FR 2315704B1
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/02—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
- Optical Elements Other Than Lenses (AREA)
- Diaphragms For Cameras (AREA)
- Liquid Crystal (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19752528039 DE2528039C3 (en) | 1975-06-24 | 1975-06-24 | Process for the production of optical gray wedges |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2315704A1 FR2315704A1 (en) | 1977-01-21 |
FR2315704B1 true FR2315704B1 (en) | 1980-04-18 |
Family
ID=5949806
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7618852A Granted FR2315704A1 (en) | 1975-06-24 | 1976-06-21 | Straight or circular optical wedge filter prodn. - filter has point shaped elements whose density changes from edge to edge |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH594909A5 (en) |
DE (1) | DE2528039C3 (en) |
FR (1) | FR2315704A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3027704C2 (en) * | 1980-07-22 | 1984-03-22 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Process for the production of a correction filter for the exposure of the fluorescent screens of color picture tubes |
-
1975
- 1975-06-24 DE DE19752528039 patent/DE2528039C3/en not_active Expired
-
1976
- 1976-05-12 CH CH592476A patent/CH594909A5/xx not_active IP Right Cessation
- 1976-06-21 FR FR7618852A patent/FR2315704A1/en active Granted
Also Published As
Publication number | Publication date |
---|---|
FR2315704A1 (en) | 1977-01-21 |
CH594909A5 (en) | 1978-01-31 |
DE2528039A1 (en) | 1976-12-30 |
DE2528039B2 (en) | 1977-07-21 |
DE2528039C3 (en) | 1978-03-23 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |