DE252414C - - Google Patents
Info
- Publication number
- DE252414C DE252414C DE1912252414D DE252414DD DE252414C DE 252414 C DE252414 C DE 252414C DE 1912252414 D DE1912252414 D DE 1912252414D DE 252414D D DE252414D D DE 252414DD DE 252414 C DE252414 C DE 252414C
- Authority
- DE
- Germany
- Prior art keywords
- layer
- color
- light
- scale
- upstream
- 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
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 description 1
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
- G01J1/48—Photometry, e.g. photographic exposure meter using chemical effects
- G01J1/50—Photometry, e.g. photographic exposure meter using chemical effects using change in colour of an indicator, e.g. actinometer
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
KLASSE 57c. GRUPPECLASS 57c. GROUP
Dr.W. SCHEFFER in BERLIN-WILMERSDORF.Dr.W. SCHEFFER in BERLIN-WILMERSDORF.
Photometer.Photometer.
Zusatz zum Patent 250815 vom 7. Dezember 1911.Addendum to patent 250815 dated December 7, 1911.
Patentiert im Deutschen Reiche vom 18. Februar 1912 ab. Längste Dauer: 6. Dezember 1926.Patented in the German Empire on February 18, 1912. Longest duration: December 6, 1926.
Den Gegenstand der vorliegenden Erfindung j bildet eine weitere Ausbildung des dem Pa- j tent 250815 zugrunde gelegten Photometers, und sie besteht darin, daß nicht die ihre Farbe durch Belichtung ändernde lichtempfindliche Schicht, sondern eine ihr vorgeschaltete bzw. vorgelagerte durchsichtige Schicht, wie z. B. eine Glasscheibe, ein Film ο. dgl. stufenweise mit an Größe oder Farbenintensität zunehmenden Zeichen bedruckt ist. Wird unter einer solchen Skala die lichtempfindliche Schicht belichtet, dann werden bei eintretender Färbung der letzteren die Zeichen der einzelnen Stufen der Skala allmählich verschwinden, und man wird infolgedessen auch ■ hier nach der Zeit, die jede einzelne Stufe bis zum Verschwinden ihrer Zeichen erfordert, die Lichtintensität feststellen können. Wird als lichtempfindliche Schicht Papier verwendet, dann kann dasselbe unter der Skala, die beispielsweise fensterartig angeordnet sein kann, in Form einer Scheibe weitergedreht oder von einer Rolle abgezogen werden, wenn jedesmal ein neues Stück des Papiers belichtet werden soll.The subject of the present invention j forms a further embodiment of the Pa- j tent 250815 underlying photometer, and it consists in the fact that not their Light-sensitive layer that changes color through exposure, but rather an upstream layer or upstream transparent layer, such as. B. a pane of glass, a film ο. like. gradually is printed with characters increasing in size or color intensity. Will be the most light-sensitive under such a scale If the layer is exposed, then when the color of the latter occurs, the characters of individual levels of the scale gradually disappear, and as a result one also becomes ■ here according to the time that each individual stage requires for its signs to disappear, determine the light intensity. Is used as a photosensitive layer of paper, then the same can be arranged under the scale, for example like a window can be rotated further in the form of a disc or pulled off a roll, if each time a new piece of paper is to be exposed.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE250815T | 1911-12-07 | ||
| DE252414T | 1912-02-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE252414C true DE252414C (en) | 1912-10-17 |
Family
ID=34621114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1912252414D Expired DE252414C (en) | 1911-12-07 | 1912-02-18 |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE252414C (en) |
-
1912
- 1912-02-18 DE DE1912252414D patent/DE252414C/de not_active Expired
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