IT8222440A0 - Filtro cromatico sottrattivo a diffrazione, sensibile all'angolo di incidenza della luce policromatica incidente. - Google Patents

Filtro cromatico sottrattivo a diffrazione, sensibile all'angolo di incidenza della luce policromatica incidente.

Info

Publication number
IT8222440A0
IT8222440A0 IT8222440A IT2244082A IT8222440A0 IT 8222440 A0 IT8222440 A0 IT 8222440A0 IT 8222440 A IT8222440 A IT 8222440A IT 2244082 A IT2244082 A IT 2244082A IT 8222440 A0 IT8222440 A0 IT 8222440A0
Authority
IT
Italy
Prior art keywords
subtractive
incidence
sensitive
angle
chromatic filter
Prior art date
Application number
IT8222440A
Other languages
English (en)
Other versions
IT1152014B (it
IT8222440A1 (it
Inventor
Karl Heinrich Knop
Rudolf Hans Morf
Original Assignee
Rca 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 Rca Corp filed Critical Rca Corp
Publication of IT8222440A0 publication Critical patent/IT8222440A0/it
Publication of IT8222440A1 publication Critical patent/IT8222440A1/it
Application granted granted Critical
Publication of IT1152014B publication Critical patent/IT1152014B/it

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30Identification or security features, e.g. for preventing forgery
    • B42D25/328Diffraction gratings; Holograms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29Securities; Bank notes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30Identification or security features, e.g. for preventing forgery
    • B42D25/324Reliefs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40Manufacture
    • B42D25/405Marking
    • B42D25/425Marking by deformation, e.g. embossing
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/18Diffraction gratings
    • G02B5/1828Diffraction gratings having means for producing variable diffraction
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/08Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
    • G06K19/10Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards
    • G06K19/16Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards the marking being a hologram or diffraction grating
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S283/00Printed matter
    • Y10S283/902Anti-photocopy

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Manufacturing & Machinery (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Credit Cards Or The Like (AREA)
  • Optical Filters (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
IT22440/82A 1981-07-20 1982-07-16 Filtro cromatico sottrattivo a diffrazione, sensibile all'angolo di incidenza della luce policromatica incidente IT1152014B (it)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8122335 1981-07-20
GB8128194 1981-09-17

Publications (3)

Publication Number Publication Date
IT8222440A0 true IT8222440A0 (it) 1982-07-16
IT8222440A1 IT8222440A1 (it) 1984-01-16
IT1152014B IT1152014B (it) 1986-12-24

Family

ID=26280187

Family Applications (1)

Application Number Title Priority Date Filing Date
IT22440/82A IT1152014B (it) 1981-07-20 1982-07-16 Filtro cromatico sottrattivo a diffrazione, sensibile all'angolo di incidenza della luce policromatica incidente

Country Status (13)

Country Link
US (1) US4484797A (it)
JP (1) JPS58500916A (it)
AU (1) AU549963B2 (it)
CA (2) CA1188139A (it)
CH (1) CH661803A5 (it)
DE (1) DE3248899T1 (it)
ES (1) ES8401640A1 (it)
FR (1) FR2509873B1 (it)
GB (1) GB2113421B (it)
IT (1) IT1152014B (it)
NL (1) NL8220263A (it)
NZ (1) NZ201332A (it)
WO (1) WO1983000395A1 (it)

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JP6557148B2 (ja) 2013-01-15 2019-08-07 レニショウ パブリック リミテッド カンパニーRenishaw Public Limited Company 測定スケール
JP6434422B2 (ja) * 2013-01-15 2018-12-05 レニショウ パブリック リミテッド カンパニーRenishaw Public Limited Company 周期的偏光ナノ構造によって表されるデータを読み取る方法
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Also Published As

Publication number Publication date
JPS6245533B2 (it) 1987-09-28
IT1152014B (it) 1986-12-24
CA1198919A (en) 1986-01-07
CA1188139A (en) 1985-06-04
GB8305589D0 (en) 1983-03-30
FR2509873B1 (fr) 1987-08-07
AU8760382A (en) 1983-03-17
NZ201332A (en) 1985-03-20
CH661803A5 (de) 1987-08-14
AU549963B2 (en) 1986-02-20
ES514155A0 (es) 1983-12-01
FR2509873A1 (fr) 1983-01-21
GB2113421A (en) 1983-08-03
WO1983000395A1 (en) 1983-02-03
DE3248899C2 (it) 1987-08-06
ES8401640A1 (es) 1983-12-01
IT8222440A1 (it) 1984-01-16
JPS58500916A (ja) 1983-06-02
NL8220263A (nl) 1983-06-01
DE3248899T1 (de) 1983-07-07
US4484797A (en) 1984-11-27
GB2113421B (en) 1985-07-31

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