DE1965840C - Filters in aerial cameras - Google Patents

Filters in aerial cameras

Info

Publication number
DE1965840C
DE1965840C DE1965840C DE 1965840 C DE1965840 C DE 1965840C DE 1965840 C DE1965840 C DE 1965840C
Authority
DE
Germany
Prior art keywords
transmission
filter according
filters
running layers
aerial cameras
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
Application number
Other languages
German (de)
Inventor
Jakob; Meier Hans Karsten; 7923 Königsbronn; Eichinger Rudolf Dr. 7082 Oberkochen Mottweiler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carl Zeiss AG
Original Assignee
Carl Zeiss AG
Publication date

Links

Description

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims (5)

Patentansprüche:Patent claims: 1. Filter für Farbaufnahmen in Luftbildkameras mit verlaufenden Schichten zur Kompensation des Lichtabfalles der Objektive zum Bildrand hin, dadurch gekennzeichnet, dall die verlaufenden Schichten eine Transmission mit einem Farbgang, der den spektralen Einflüssen des Luftlichtes entgegenwirkt, aufwei^n.1. Filters for color recordings in aerial cameras with running layers for compensation the drop in light from the lenses to the edge of the image out, characterized dall the running layers have a transmission with a color change that reflects the spectral influences of the air light counteracts, aufwei ^ n. 2. Filter nach Anspruch 1, dadurch gekennzeichnet, daß die Transmission der verlaufenden Schichten nahezu linear von kurzen Wellenlängen zu langen Wellenlängen hin abnimmt.2. Filter according to claim 1, characterized in that the transmission of the running Layers decreases almost linearly from short wavelengths to long wavelengths. 3. Filter nach Anspruch 2, dadurch gekennzeichnet, daß die Transmission der verlaufenden Filter bei einer Wellenlänge von 700 nm etwa 75 bis 85 "» der Transmission bei 4Ί0 nm beträgt. 3. Filter according to claim 2, characterized in that the transmission of the extending filters at a wavelength of 700 nm is about 75 to 85 " » the transmission at 40 nm. 4. Filter nach den Ansprüchen 1 bis 3, dacl'irch gekennzeichnet, daß die verlaufenden Schichten Kombinationen von Nickel und Magnesium enthalten.4. Filter according to claims 1 to 3, dacl'irch characterized in that the running layers are combinations of nickel and magnesium contain. 5. Filter nach Anspruch 1 oder folgenden, gekennzeichnet durch die Kombination mit einem Skylight-Filter bekannter Bauart.5. Filter according to claim 1 or the following, characterized by combining it with a known type of skylight filter.

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