AT20748B - Light filter. - Google Patents

Light filter.

Info

Publication number
AT20748B
AT20748B AT20748DA AT20748B AT 20748 B AT20748 B AT 20748B AT 20748D A AT20748D A AT 20748DA AT 20748 B AT20748 B AT 20748B
Authority
AT
Austria
Prior art keywords
light filter
desc
celluloid
warning
plates
Prior art date
Application number
Other languages
German (de)
Inventor
Rudolf Wittmann
Original Assignee
Rudolf Wittmann
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 Rudolf Wittmann filed Critical Rudolf Wittmann
Application granted granted Critical
Publication of AT20748B publication Critical patent/AT20748B/en

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Description

  

   <Desc/Clms Page number 1> 
 



  Lichtfilter. 



   Plättchen aus farbigem Zelluloid haben sich als für gewisse Zwecke besonders   vorieilhafte Lichttilter erwiesen,   sind jedoch infolge ihrer Empfindlichkeit gegen äussere, insbesondere Witterungseinflüsse und auch deshalb, weil sie bei dünnen Querschnitten zur Wellen bildung neigen, zur praktischen Verwendung nicht geeignet. 



   Um diesen   Übelständen   abzuhelfen, resp. das an sich sehr vorteilhafte Zelluloid- 
 EMI1.1 
 im Sinne der vorliegenden Erfindung zwischen zwei farblosen oder gefärbten, dicht aneinander schliessenden Glasplatten gefasst und durch einen gemeinsamen Rahmen vereint. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Light filter.



   Platelets made of colored celluloid have proven to be particularly precedent light filters for certain purposes, but are unsuitable for practical use due to their sensitivity to external, especially weather conditions and also because they tend to form waves with thin cross-sections.



   To remedy these evils, respectively. the very advantageous celluloid
 EMI1.1
 For the purposes of the present invention, held between two colorless or colored, tightly fitting glass plates and united by a common frame.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

Claims (1)

PATENT-ANSPRUCH : Lichtfilter, gekennzeichnet, durch zwischen eventuell ebenfalls gefärbten Glasplatten gefasste Zelluloidplatten von entsprechender Färbung. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Light filter, characterized by celluloid plates of the appropriate color, which may also be colored glass plates. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT20748D 1903-05-13 1903-05-13 Light filter. AT20748B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT20748T 1903-05-13

Publications (1)

Publication Number Publication Date
AT20748B true AT20748B (en) 1905-07-25

Family

ID=3527221

Family Applications (1)

Application Number Title Priority Date Filing Date
AT20748D AT20748B (en) 1903-05-13 1903-05-13 Light filter.

Country Status (1)

Country Link
AT (1) AT20748B (en)

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