DE579132C - Device for generating illuminated areas with graduated brightness - Google Patents
Device for generating illuminated areas with graduated brightnessInfo
- Publication number
- DE579132C DE579132C DEA61476D DEA0061476D DE579132C DE 579132 C DE579132 C DE 579132C DE A61476 D DEA61476 D DE A61476D DE A0061476 D DEA0061476 D DE A0061476D DE 579132 C DE579132 C DE 579132C
- Authority
- DE
- Germany
- Prior art keywords
- diaphragm
- brightness
- illuminated areas
- graduated
- light
- 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
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
- G03C5/02—Sensitometric processes, e.g. determining sensitivity, colour sensitivity, gradation, graininess, density; Making sensitometric wedges
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Description
Gegenstand'der Erfindung ist eine Einrichtung zur Erzeugung beleuchteter Flächen mit abgestufter Helligkeit, vorzugsweise zur Messung der Empfindlichkeit photographischer Platten. Die abgestufte Helligkeit wird auf Grund der Erfindung im wesentlichen dadurch erreicht, daß eine von konvergenten Kurven begrenzte Blende aus einem mittels einer punktförmigen Lichtquelle und einer sphärischen Linse erzeugten parallel strahligen Lichtbündel ein Teilbündel herausblendet, welches durch eine hinter der Blende anzuordnende Zylinderlinse zu einer Lichtlinie zusammengezogen wird, welche von einemThe invention relates to a device for generating illuminated areas with graded brightness, preferably for measuring the sensitivity of photographic Plates. The graded brightness is based on the invention essentially thereby achieved that a limited by convergent curves aperture from a means a point light source and a spherical lens generated parallel beam Light bundle fades out a partial bundle, which is to be arranged behind the diaphragm by a Cylinder lens is drawn together to form a line of light, which is from a
«5 Schirm, z.B. einer .photographischen Platte, aufgefangen werden kann. Die Helligkeit der aufgefangenen Lichtlinie erscheint der Blendenform entsprechend abgestuft.«5 screen, e.g. a photographic plate, can be caught. The brightness of the The captured light line appears graduated according to the shape of the aperture.
Für eine zweckmäßige AusführungsformFor a convenient embodiment
ao der Erfindung ist das Schema des Strahlenganges in den Abbildungen dargestellt, und zwar zeigt Abb. 1 den Strahlengang in einem zur Achse der Zylinderlinsen senkrechten Schnitt, Abb. 2 den Strahlengang in einem durch die Achse der Zylinderlinsen hindurchgelegten Schnitt. Abb. 3 stellt die Blende dar. Das von der Lampe 1 ausgehende Licht wird durch den Kondensor 2 auf die mit einer Mattscheibe versehene Lochblende 3 geworfen. Diese wirkt als selbstleuchtender Punkt, der mit dem Brennpunkt der sphärischen Linse 4 zusammenfällt. Das von der Lochblende als leuchtender Punkt, ausgehende Licht wird daher durch die sphärische Linse 4ao of the invention is the diagram of the beam path shown in the figures, namely Fig. 1 shows the beam path in one Section perpendicular to the axis of the cylindrical lenses, Fig. 2 shows the beam path in one cut through the axis of the cylinder lenses. Fig. 3 shows the aperture. The outgoing from the lamp 1 light is through the condenser 2 on the with a Matt screen provided perforated screen 3 thrown. This acts as a self-luminous point, which coincides with the focal point of the spherical lens 4. That from the pinhole As a luminous point, outgoing light is therefore through the spherical lens 4
•35 parallel gerichtet. Aus dem parallelen Lichtbündel wird ein der in Abb. 3 dargestellten Form der Blende entsprechendes Teilbündel herausgeblendet. Das parallele Lichtbündel wird durch die Zylinderlinse 6 zu einer leuchtenden Linie in der Brennlinie der Zylinderlinse 6 zusammengezogen. Hier kann es noch durch eine Mattscheibe 7 aufgefangen und durch eine weitere sphärische Linse 8 vergrößert auf die lichtempfindliche Schicht 9 geworfen werden. Auf dieser erscheint es dann als leuchtende Lichtlinie abgestufter Helligkeit. Die Helligkeitsabstufung -entspricht der Form der Blende 5, die zweckmäßig unter Berücksichtigung des Strahlungsdiagrammes der punktförmigen Lichtquelle 3 sowie der Absorption in den Linsen 4, 6 Und gegebenenfalls weiterer zwischen Blende und Auffangebene der abgestuften Lichtlinie vorgesehener Optik zu wählen ist.• 35 parallel directed. From the parallel bundle of light a partial bundle corresponding to the shape of the diaphragm shown in Fig. 3 is faded out. The parallel bundle of light becomes a luminous line in the focal line of the cylinder lens through the cylinder lens 6 6 contracted. Here it can still be captured by a ground glass screen 7 and enlarged by a further spherical lens 8 are thrown on the photosensitive layer 9. It then appears on this as a luminous line of light of graded brightness. The brightness gradation corresponds to the Shape of the diaphragm 5, which is expedient taking into account the radiation diagram the point-like light source 3 and the absorption in the lenses 4, 6 and possibly another one provided between the diaphragm and the collecting plane of the graduated light line Optics is to be chosen.
Andere Ausführungsformen und Anwendungsmöglichkeiten der Erfindung ergeben sich nach Bedarf.Other embodiments and possible uses of the invention result as needed.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA61476D DE579132C (en) | Device for generating illuminated areas with graduated brightness |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA61476D DE579132C (en) | Device for generating illuminated areas with graduated brightness |
Publications (1)
Publication Number | Publication Date |
---|---|
DE579132C true DE579132C (en) | 1933-06-22 |
Family
ID=6942592
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEA61476D Expired DE579132C (en) | Device for generating illuminated areas with graduated brightness |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE579132C (en) |
-
0
- DE DEA61476D patent/DE579132C/en not_active Expired
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