FR2177774B1 - - Google Patents

Info

Publication number
FR2177774B1
FR2177774B1 FR7307000A FR7307000A FR2177774B1 FR 2177774 B1 FR2177774 B1 FR 2177774B1 FR 7307000 A FR7307000 A FR 7307000A FR 7307000 A FR7307000 A FR 7307000A FR 2177774 B1 FR2177774 B1 FR 2177774B1
Authority
FR
France
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
FR7307000A
Other languages
French (fr)
Other versions
FR2177774A1 (ar
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of FR2177774A1 publication Critical patent/FR2177774A1/fr
Application granted granted Critical
Publication of FR2177774B1 publication Critical patent/FR2177774B1/fr
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
    • G02B5/208—Filters for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
    • G02B27/281—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for attenuating light intensity, e.g. comprising rotatable polarising elements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Eyeglasses (AREA)
  • Optical Filters (AREA)
  • Polarising Elements (AREA)
FR7307000A 1972-02-29 1973-02-28 Expired FR2177774B1 (ar)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US23040872A 1972-02-29 1972-02-29

Publications (2)

Publication Number Publication Date
FR2177774A1 FR2177774A1 (ar) 1973-11-09
FR2177774B1 true FR2177774B1 (ar) 1976-11-05

Family

ID=22865106

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7307000A Expired FR2177774B1 (ar) 1972-02-29 1973-02-28

Country Status (4)

Country Link
JP (1) JPS4895850A (ar)
DE (1) DE2309732A1 (ar)
FR (1) FR2177774B1 (ar)
IT (1) IT979490B (ar)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS594820B2 (ja) * 1974-05-20 1984-02-01 大日本印刷株式会社 色分離フイルタ−の製造法

Also Published As

Publication number Publication date
IT979490B (it) 1974-09-30
DE2309732A1 (de) 1973-09-06
FR2177774A1 (ar) 1973-11-09
JPS4895850A (ar) 1973-12-08

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Legal Events

Date Code Title Description
ST Notification of lapse