BE737385A - - Google Patents
Info
- Publication number
- BE737385A BE737385A BE737385DA BE737385A BE 737385 A BE737385 A BE 737385A BE 737385D A BE737385D A BE 737385DA BE 737385 A BE737385 A BE 737385A
- Authority
- BE
- Belgium
Links
Classifications
-
- 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
- G01J1/4209—Photoelectric exposure meters for determining the exposure time in recording or reproducing
- G01J1/4219—Photoelectric exposure meters for determining the exposure time in recording or reproducing specially adapted for enlargers
-
- 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)
- Adjustable Resistors (AREA)
- Switches With Compound Operations (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Stroboscope Apparatuses (AREA)
- Control Of Exposure In Printing And Copying (AREA)
- Light Sources And Details Of Projection-Printing Devices (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL686811524A NL155104B (nl) | 1968-08-14 | 1968-08-14 | Schakeltoestel voor het voeden van de lichtbron van een fotografisch vergrotingsapparaat. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE737385A true BE737385A (nl) | 1970-02-12 |
Family
ID=19804365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE737385D BE737385A (nl) | 1968-08-14 | 1969-08-12 |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3647297A (nl) |
| JP (1) | JPS493841B1 (nl) |
| AT (1) | AT309207B (nl) |
| BE (1) | BE737385A (nl) |
| CH (1) | CH534370A (nl) |
| FR (1) | FR2015647A1 (nl) |
| GB (1) | GB1270009A (nl) |
| NL (1) | NL155104B (nl) |
| SE (1) | SE345021B (nl) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2188155B1 (nl) * | 1972-06-06 | 1974-12-27 | Matore Georges | |
| US3874793A (en) * | 1973-04-09 | 1975-04-01 | Philip D Nielsen | Electronic print exposure analyzer |
| JPS5077148U (nl) * | 1973-11-14 | 1975-07-04 | ||
| US4812882A (en) * | 1986-10-14 | 1989-03-14 | Ciba-Geigy Ag | Contrast monitor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2149250A (en) * | 1938-02-26 | 1939-03-07 | Joseph M Bing | Photometer |
| US2201606A (en) * | 1939-03-06 | 1940-05-21 | Joseph M Bing | Automatic exposure control |
| US2605447A (en) * | 1950-07-17 | 1952-07-29 | John H Troup | Enlargement photography |
| US3086709A (en) * | 1960-02-17 | 1963-04-23 | Simmon Brothers Inc | Density control for photographic enlargers |
-
1968
- 1968-08-14 NL NL686811524A patent/NL155104B/nl unknown
-
1969
- 1969-08-07 US US848176A patent/US3647297A/en not_active Expired - Lifetime
- 1969-08-11 CH CH1214169A patent/CH534370A/de not_active IP Right Cessation
- 1969-08-11 AT AT770569A patent/AT309207B/de not_active IP Right Cessation
- 1969-08-11 SE SE11156/69A patent/SE345021B/xx unknown
- 1969-08-11 GB GB40104/69A patent/GB1270009A/en not_active Expired
- 1969-08-12 JP JP44063501A patent/JPS493841B1/ja active Pending
- 1969-08-12 BE BE737385D patent/BE737385A/xx unknown
- 1969-08-13 FR FR6927849A patent/FR2015647A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| CH534370A (de) | 1973-02-28 |
| SE345021B (nl) | 1972-05-08 |
| NL6811524A (nl) | 1970-02-17 |
| FR2015647A1 (nl) | 1970-04-30 |
| GB1270009A (en) | 1972-04-12 |
| DE1939995B2 (de) | 1976-03-04 |
| US3647297A (en) | 1972-03-07 |
| JPS493841B1 (nl) | 1974-01-29 |
| DE1939995A1 (de) | 1970-03-12 |
| NL155104B (nl) | 1977-11-15 |
| AT309207B (de) | 1973-08-10 |