DE2016972A1 - Lichtfilter mit veränderlicher optischer Dichte unter Anwendung von Leukophenazin-Farbstoffen - Google Patents

Lichtfilter mit veränderlicher optischer Dichte unter Anwendung von Leukophenazin-Farbstoffen

Info

Publication number
DE2016972A1
DE2016972A1 DE19702016972 DE2016972A DE2016972A1 DE 2016972 A1 DE2016972 A1 DE 2016972A1 DE 19702016972 DE19702016972 DE 19702016972 DE 2016972 A DE2016972 A DE 2016972A DE 2016972 A1 DE2016972 A1 DE 2016972A1
Authority
DE
Germany
Prior art keywords
dye
light filter
solution
filter according
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.)
Withdrawn
Application number
DE19702016972
Other languages
German (de)
English (en)
Inventor
auf Nichtnennung. P G03b Antrag
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.)
American Optical Corp
Original Assignee
American Optical Corp
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 American Optical Corp filed Critical American Optical Corp
Publication of DE2016972A1 publication Critical patent/DE2016972A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/20Filters
    • G02B5/22Absorbing filters
    • G02B5/23Photochromic filters
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00Photosensitive materials
    • G03C1/72Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705
    • G03C1/73Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705 containing organic compounds
    • G03C1/732Leuco dyes

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Optical Filters (AREA)
DE19702016972 1969-04-10 1970-04-06 Lichtfilter mit veränderlicher optischer Dichte unter Anwendung von Leukophenazin-Farbstoffen Withdrawn DE2016972A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US81495569A 1969-04-10 1969-04-10

Publications (1)

Publication Number Publication Date
DE2016972A1 true DE2016972A1 (de) 1970-10-15

Family

ID=25216452

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19702016972 Withdrawn DE2016972A1 (de) 1969-04-10 1970-04-06 Lichtfilter mit veränderlicher optischer Dichte unter Anwendung von Leukophenazin-Farbstoffen

Country Status (8)

Country Link
US (1) US3660299A (enExample)
JP (1) JPS4936619B1 (enExample)
CA (1) CA926606A (enExample)
DE (1) DE2016972A1 (enExample)
FR (1) FR2064039B1 (enExample)
GB (1) GB1245566A (enExample)
IL (1) IL34248A (enExample)
NL (1) NL7005140A (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102618064B (zh) * 2012-02-28 2014-04-30 武汉工程大学 一种健那绿b的合成工艺
CN102617492A (zh) * 2012-02-28 2012-08-01 武汉工程大学 健那绿b的合成方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6407696A (enExample) * 1963-12-23 1965-06-24
US3390933A (en) * 1964-11-25 1968-07-02 American Optical Corp Variable density light transmitting device

Also Published As

Publication number Publication date
CA926606A (en) 1973-05-22
GB1245566A (en) 1971-09-08
JPS4936619B1 (enExample) 1974-10-02
US3660299A (en) 1972-05-02
FR2064039A1 (enExample) 1971-07-16
IL34248A0 (en) 1970-06-17
NL7005140A (enExample) 1970-10-13
IL34248A (en) 1972-12-29
FR2064039B1 (enExample) 1974-08-09

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Legal Events

Date Code Title Description
E77 Valid patent as to the heymanns-index 1977
EHJ Ceased/non-payment of the annual fee
EI Miscellaneous see part 3
EILA Invalidation of the cancellation of the patent
EHJ Ceased/non-payment of the annual fee