GB1229677A - - Google Patents
Info
- Publication number
- GB1229677A GB1229677A GB1229677DA GB1229677A GB 1229677 A GB1229677 A GB 1229677A GB 1229677D A GB1229677D A GB 1229677DA GB 1229677 A GB1229677 A GB 1229677A
- Authority
- GB
- United Kingdom
- Prior art keywords
- area
- cells
- photo
- output
- density
- 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.)
- Expired
Links
- 230000035945 sensitivity Effects 0.000 abstract 1
- 230000003595 spectral effect Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B27/00—Photographic printing apparatus
- G03B27/72—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Control Of Exposure In Printing And Copying (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US64013667A | 1967-05-22 | 1967-05-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1229677A true GB1229677A (de) | 1971-04-28 |
Family
ID=24566984
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1229677D Expired GB1229677A (de) | 1967-05-22 | 1968-05-17 |
Country Status (4)
Country | Link |
---|---|
CH (1) | CH464691A (de) |
DE (1) | DE1772475B1 (de) |
FR (1) | FR1571646A (de) |
GB (1) | GB1229677A (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA931408A (en) * | 1970-08-27 | 1973-08-07 | M. Waz Edward | Method and apparatus for sensing radiation derived from information bearing media |
DE3220203C2 (de) * | 1982-05-28 | 1986-03-06 | Agfa-Gevaert Ag, 5090 Leverkusen | Verfahren zur Sortierung von fotografischen Kopiervorlagen in verschiedenen Motivgruppen und zur Festlegung von Dichtekorrekturwerten |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3188475A (en) * | 1961-11-24 | 1965-06-08 | Raytheon Co | Multiple zone photoelectric device |
-
1968
- 1968-05-16 CH CH722968A patent/CH464691A/fr unknown
- 1968-05-17 GB GB1229677D patent/GB1229677A/en not_active Expired
- 1968-05-21 DE DE19681772475 patent/DE1772475B1/de not_active Withdrawn
- 1968-06-19 FR FR1571646D patent/FR1571646A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1772475B1 (de) | 1970-09-24 |
CH464691A (fr) | 1968-10-31 |
FR1571646A (de) | 1969-06-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |