DE274030C - - Google Patents
Info
- Publication number
- DE274030C DE274030C DENDAT274030D DE274030DA DE274030C DE 274030 C DE274030 C DE 274030C DE NDAT274030 D DENDAT274030 D DE NDAT274030D DE 274030D A DE274030D A DE 274030DA DE 274030 C DE274030 C DE 274030C
- Authority
- DE
- Germany
- Prior art keywords
- ultraviolet
- light
- original
- violet
- illumination
- 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.)
- Active
Links
- 238000001228 spectrum Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 238000005286 illumination Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000010453 quartz Substances 0.000 description 3
- 230000005855 radiation Effects 0.000 description 2
- 229910021532 Calcite Inorganic materials 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- SEQDDYPDSLOBDC-UHFFFAOYSA-N Temazepam Chemical compound N=1C(O)C(=O)N(C)C2=CC=C(Cl)C=C2C=1C1=CC=CC=C1 SEQDDYPDSLOBDC-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011034 rock crystal Substances 0.000 description 1
- 238000013515 script Methods 0.000 description 1
- 235000002639 sodium chloride Nutrition 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/16—X-ray, infrared, or ultraviolet ray processes
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection-Type Copiers In General (AREA)
- Light Sources And Details Of Projection-Printing Devices (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Gewisse Primärschriften in Palimpsesten werden entweder durch ausschließlich ultraviolette Beleuchtung oder durch gleichzeitige ultraviolette und sichtbare Beleuchtung vom Planum des Originals genügend differenziert, um sie durch photographische Aufnahmen deutlich zu machen.Certain primary scripts in palimpsests are replaced either by exclusively ultraviolet Illumination or by simultaneous ultraviolet and visible illumination from the Planum of the original sufficiently differentiated to be recognized by photographic recordings make clear.
Alle bisher bekannt gewordenen Lichtfilter, welche sichtbares Licht vollständig oder inAll previously known light filters which fully or in
ίο größerem Maße absorbieren, halten einen nicht unbedeutenden Teil von Ultraviolett zurück. Wollte man zur Ultraviolettbestrahlung eines zu photographierenden Originals solche Lichtfilter verwenden, so müßte trotz starker Lichtquellen die Beleuchtung sehr lange andauern, was nicht nur Zeitverlust, sondern auch eine stärkere Abnutzung der Instrumentarien zur Folge hätte.ίο absorb larger amounts, do not hold you insignificant part of ultraviolet back. If you wanted one for ultraviolet radiation To use such light filters for the originals to be photographed, it would have to be in spite of strong light sources the lighting last a very long time, which is not only a waste of time, but also a would result in greater wear and tear on the instruments.
Wenn die Lichtfilter unmittelbar vor oder hinter dem Objektiv angebracht werden, so wird durch sphärische Aberration u. dgl., z.B. durch Schlieren in einer kontinuierlich fließenden Filterflüssigkeit oder infolge des Ausbleichens des FilterfarbstoSes oder der Mattierung des Filterglases durch das Ultraviolett, die Güte der Bilder beeinträchtigt.If the light filters are attached directly in front of or behind the lens, then so is caused by spherical aberration and the like, e.g. by streaks in a continuously flowing Filter liquid or as a result of the fading of the filter dye or the matting of the filter glass by the ultraviolet, the quality of the images is impaired.
Die nachstehend beschriebene Beleuchtungsvorrichtung macht nun alle Lichtfilter entbehrlich. The lighting device described below now makes all light filters unnecessary.
Wie die Zeichnung zeigt, wirft ein Quarzprisma A mit dem von einer Quarzlampe (durch Kollektor, Kondensor und Spalt) kommenden Licht ein Spektrum auf das zu photographierende Original. Dieses wird so aufgestellt, daß es nur von dem Bezirk V-UV (Violett bis Ultraviolett) bestrahlt wird.As the drawing shows, a quartz prism A casts a spectrum onto the original to be photographed with the light coming from a quartz lamp (through collector, condenser and slit). This is set up in such a way that it is only irradiated by the V-UV (violet to ultraviolet) region.
Da nun das Licht gegen das ultraviolette Ende kurzwelliger ist als gegen den violetten Teil, wodurch die Beleuchtung des Originals einseitig würde, so wird das Original von der anderen Seite mit einer gleichen Prismenvorrichtung A2 so beleuchtet, daß daran Violett (F1) auf UV und Ultraviolett (UV1) auf V zu liegen kommt.Since the light towards the ultraviolet end is now shorter than towards the violet part, whereby the illumination of the original would be one-sided, the original is illuminated from the other side with the same prism device A 2 in such a way that violet (F 1 ) on UV and ultraviolet (UV 1 ) comes to rest on V.
Zum Zwecke einer gleichmäßigeren Vertcilung des Lichtes kann das Spektrum durch Drehen des Prismas oder Änderung der Stellung der Lichtquelle während der Beleuchtung etwas verschoben werden.For the purpose of a more even distribution of the light, the spectrum can pass through Rotating the prism or changing the position of the light source during illumination something to be postponed.
Die Beleuchtung mit dem Ultraviolett findet naturgemäß im dunklen Räume statt.The lighting with the ultraviolet naturally takes place in the dark room.
Die Prismen für die Ultraviolettbestrahlung können aus Quarz bzw. Bergkristall, Steinsalz, Fluß- oder Kalkspat sein.The prisms for ultraviolet radiation can be made of quartz or rock crystal, rock salt, Be fluorspar or calcite.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE274030C true DE274030C (en) |
Family
ID=530431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT274030D Active DE274030C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE274030C (en) |
-
0
- DE DENDAT274030D patent/DE274030C/de active Active
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