GB1506912A - Filters employing photochromic materials - Google Patents

Filters employing photochromic materials

Info

Publication number
GB1506912A
GB1506912A GB11105/75A GB1110575A GB1506912A GB 1506912 A GB1506912 A GB 1506912A GB 11105/75 A GB11105/75 A GB 11105/75A GB 1110575 A GB1110575 A GB 1110575A GB 1506912 A GB1506912 A GB 1506912A
Authority
GB
United Kingdom
Prior art keywords
aromatic
light
absorption
plane
radiation
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
GB11105/75A
Other languages
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.)
AT&T Inc
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB1506912A publication Critical patent/GB1506912A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/22—Absorbing filters
    • G02B5/23—Photochromic filters
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/10—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
    • G02C7/102—Photochromic filters
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/72—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705
    • G03C1/73—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705 containing organic compounds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y10T428/31634—Next to cellulosic

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Polarising Elements (AREA)
  • Eyeglasses (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Optical Filters (AREA)
GB11105/75A 1974-03-18 1975-03-18 Filters employing photochromic materials Expired GB1506912A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/451,839 US3964823A (en) 1974-03-18 1974-03-18 Articles employing photochromic materials

Publications (1)

Publication Number Publication Date
GB1506912A true GB1506912A (en) 1978-04-12

Family

ID=23793908

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11105/75A Expired GB1506912A (en) 1974-03-18 1975-03-18 Filters employing photochromic materials

Country Status (6)

Country Link
US (1) US3964823A (enExample)
JP (1) JPS50127885A (enExample)
CA (1) CA1033566A (enExample)
DE (1) DE2510836A1 (enExample)
FR (1) FR2264785B1 (enExample)
GB (1) GB1506912A (enExample)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1116005A (en) * 1977-06-29 1982-01-12 Dan L. Fanselow Photochromic aziridine recording media
US5213733A (en) * 1991-06-03 1993-05-25 Industrial Technology Research Institute Method of making synthetic fibers containing photochromic pigment
US6172795B1 (en) 1997-05-30 2001-01-09 Cambridge Scientific, Inc. Optical shutter device
US6094290A (en) * 1999-04-22 2000-07-25 Crawford; Christopher L. Light-reactive thermal window

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3436353A (en) * 1959-10-22 1969-04-01 Polacoat Inc Phototropic compositions
US3329502A (en) * 1963-10-01 1967-07-04 American Cyanamid Co Epoxide compounds and photochromic compositions containing the same
US3540793A (en) * 1968-07-03 1970-11-17 Corning Glass Works Photochromic polarizing glasses
US3609165A (en) * 1968-07-19 1971-09-28 Research Corp 1,3-diazabicyclo {8 3.1.0{9 {0 hex-3-enes
DE1932840B2 (de) * 1969-06-28 1971-12-16 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Datenspeichersystem
US3617114A (en) * 1970-02-24 1971-11-02 Polaroid Corp Pleochroic spectacles

Also Published As

Publication number Publication date
JPS50127885A (enExample) 1975-10-08
US3964823A (en) 1976-06-22
CA1033566A (en) 1978-06-27
FR2264785B1 (enExample) 1980-03-28
FR2264785A1 (enExample) 1975-10-17
DE2510836A1 (de) 1975-09-25

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee