DE8505421U1 - Optisches Filter mit reversibler Farbänderung - Google Patents

Optisches Filter mit reversibler Farbänderung

Info

Publication number
DE8505421U1
DE8505421U1 DE19858505421 DE8505421U DE8505421U1 DE 8505421 U1 DE8505421 U1 DE 8505421U1 DE 19858505421 DE19858505421 DE 19858505421 DE 8505421 U DE8505421 U DE 8505421U DE 8505421 U1 DE8505421 U1 DE 8505421U1
Authority
DE
Germany
Prior art keywords
filter according
color change
acidic
reversible color
optical filter
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
DE19858505421
Other languages
German (de)
English (en)
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to DE19858505421 priority Critical patent/DE8505421U1/de
Publication of DE8505421U1 publication Critical patent/DE8505421U1/de
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/20Filters
    • G02B5/22Absorbing filters
    • G02B5/223Absorbing filters containing organic substances, e.g. dyes, inks or pigments
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/77Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
    • G01N21/78Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
    • G01N21/783Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour for analysing gases
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00Optical elements characterised by the material of which they are made; Optical coatings for optical elements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Optics & Photonics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Plasma & Fusion (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
DE19858505421 1985-02-26 1985-02-26 Optisches Filter mit reversibler Farbänderung Expired DE8505421U1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19858505421 DE8505421U1 (de) 1985-02-26 1985-02-26 Optisches Filter mit reversibler Farbänderung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19858505421 DE8505421U1 (de) 1985-02-26 1985-02-26 Optisches Filter mit reversibler Farbänderung

Publications (1)

Publication Number Publication Date
DE8505421U1 true DE8505421U1 (de) 1988-08-18

Family

ID=6777895

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19858505421 Expired DE8505421U1 (de) 1985-02-26 1985-02-26 Optisches Filter mit reversibler Farbänderung

Country Status (1)

Country Link
DE (1) DE8505421U1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4303858A1 (de) * 1993-02-10 1994-08-11 Draegerwerk Ag Vorrichtung zur automatischen optischen Auswertung kolorimetrischer Verfärbungszonen auf einem Träger zum Nachweis von gas- und/oder dampfförmigen Komponenten eines Gasgemisches

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4303858A1 (de) * 1993-02-10 1994-08-11 Draegerwerk Ag Vorrichtung zur automatischen optischen Auswertung kolorimetrischer Verfärbungszonen auf einem Träger zum Nachweis von gas- und/oder dampfförmigen Komponenten eines Gasgemisches

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