FR923055A - Improvements relating to light-filtering materials and their manufacturing processes - Google Patents

Improvements relating to light-filtering materials and their manufacturing processes

Info

Publication number
FR923055A
FR923055A FR923055DA FR923055A FR 923055 A FR923055 A FR 923055A FR 923055D A FR923055D A FR 923055DA FR 923055 A FR923055 A FR 923055A
Authority
FR
France
Prior art keywords
light
manufacturing processes
improvements relating
filtering materials
filtering
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
Other languages
French (fr)
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.)
Polaroid Corp
International Polaroid Corp
Original Assignee
Polaroid Corp
International Polaroid 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 Polaroid Corp, International Polaroid Corp filed Critical Polaroid Corp
Application granted granted Critical
Publication of FR923055A publication Critical patent/FR923055A/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
    • G02B5/223—Absorbing filters containing organic substances, e.g. dyes, inks or pigments

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR923055D 1945-04-09 1946-03-01 Improvements relating to light-filtering materials and their manufacturing processes Expired FR923055A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US923055XA 1945-04-09 1945-04-09

Publications (1)

Publication Number Publication Date
FR923055A true FR923055A (en) 1947-06-26

Family

ID=22232608

Family Applications (1)

Application Number Title Priority Date Filing Date
FR923055D Expired FR923055A (en) 1945-04-09 1946-03-01 Improvements relating to light-filtering materials and their manufacturing processes

Country Status (1)

Country Link
FR (1) FR923055A (en)

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