AT100158B - Photographic light meter. - Google Patents

Photographic light meter.

Info

Publication number
AT100158B
AT100158B AT100158DA AT100158B AT 100158 B AT100158 B AT 100158B AT 100158D A AT100158D A AT 100158DA AT 100158 B AT100158 B AT 100158B
Authority
AT
Austria
Prior art keywords
photographic light
light meter
meter according
scale
photographic
Prior art date
Application number
Other languages
German (de)
Inventor
Franz Kuenzel
Original Assignee
Franz Kuenzel
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Franz Kuenzel filed Critical Franz Kuenzel
Application granted granted Critical
Publication of AT100158B publication Critical patent/AT100158B/en

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Description

  

   <Desc/Clms Page number 1> 
 



  Photographischer Belichtungsmesser. 
 EMI1.1 
 

 <Desc/Clms Page number 2> 

 
 EMI2.1 
   Skala des Deckels gVeichzeitigdieBelichtungsdauerbzw.BIendeneinstenunganzeigt.DerFarbfilter und 4'sind hiebei der Färbung der künstlichen Lichtquelle angepasst und z. B. bei Verwendung von Glühbirnen rot, bei Verwendung von Radium grün usw. 



  Um die sinkende Spannung der Batterie und damit die verschiedene Helligkeit der Lampe :   zu kompensieren, wird der Widerstandsschieber 13 vor jeder Einstellung so lange verschoben, bis trotz niedergedrücktem Schalterknopf 10 der Glühfaden der Lampe nicht mehr leuchtet. Diese Stellung des 
 EMI2.2 
 sodann die entsprechende Lampenhelligkeit eingestellt. 



   PATENT-ANSPRÜCHE :
1. Photographischer Belichtungsmesser mit elektrischer   Vergieichsi'chtquelle, dadurch gekenn-   zeichnet, dass die Lichtangleichung der Vergleichslampe an die Helligkeit des aufzunehmenden Lichtes   durch elektrische'Widerstandsschaltung erfolgt.



   <Desc / Clms Page number 1>
 



  Photographic light meter.
 EMI1.1
 

 <Desc / Clms Page number 2>

 
 EMI2.1
   The scale of the cover gSimultaneously shows the exposure time or the end of the setting. The color filter and 4 'are adapted to the color of the artificial light source and are e.g. B. red when using lightbulbs, green when using radium, etc.



  In order to compensate for the falling voltage of the battery and thus the different brightness of the lamp, the resistance slide 13 is moved before each setting until the filament of the lamp no longer lights up despite the switch button 10 being depressed. This position of the
 EMI2.2
 then set the appropriate lamp brightness.



   PATENT CLAIMS:
1. Photographic exposure meter with an electrical comparison source, characterized in that the light of the comparison lamp is adjusted to the brightness of the light to be recorded by means of an electrical resistance circuit.

Claims (1)

2. Photographischer Belichtungsmesser nach Anspruch 1, dadurch gekennzeichnet, dass der die Lichtangleichung bewirkende Widerstandsschalthebel längs einer die erforderliche Ablesung der Be- lichtungszeit bzw. Blendeneinstellung unmittelbar angebenden Skala verschoben wird. 2. Photographic exposure meter according to claim 1, characterized in that the resistance switch lever effecting the light adjustment is shifted along a scale directly indicating the required reading of the exposure time or aperture setting. 3. Photographischer Belichtungsmesser nach Anspruch 1 und 2, dadurch gekennzeichnet, dass die Skala in bezug auf die Sehalthebelste. Ilung einstellbar ist, um die sinkende Spannung der Batterie zu kompensieren. EMI2.3 3. Photographic exposure meter according to claim 1 and 2, characterized in that the scale with respect to the Sehalthebelste. Ilung is adjustable to compensate for the falling voltage of the battery. EMI2.3
AT100158D 1923-08-13 1924-08-01 Photographic light meter. AT100158B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE100158X 1923-08-13

Publications (1)

Publication Number Publication Date
AT100158B true AT100158B (en) 1925-06-10

Family

ID=5648430

Family Applications (1)

Application Number Title Priority Date Filing Date
AT100158D AT100158B (en) 1923-08-13 1924-08-01 Photographic light meter.

Country Status (1)

Country Link
AT (1) AT100158B (en)

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