JPS55570A - Multilayer antireflection film containing antiabsorption layer - Google Patents

Multilayer antireflection film containing antiabsorption layer

Info

Publication number
JPS55570A
JPS55570A JP4239679A JP4239679A JPS55570A JP S55570 A JPS55570 A JP S55570A JP 4239679 A JP4239679 A JP 4239679A JP 4239679 A JP4239679 A JP 4239679A JP S55570 A JPS55570 A JP S55570A
Authority
JP
Japan
Prior art keywords
layer
antiabsorption
glass
film thickness
multilayer antireflection
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.)
Pending
Application number
JP4239679A
Other languages
Japanese (ja)
Inventor
Kunio Sakurai
Hiroshi Ito
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta 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 Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP4239679A priority Critical patent/JPS55570A/en
Publication of JPS55570A publication Critical patent/JPS55570A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Surface Treatment Of Optical Elements (AREA)

Abstract

PURPOSE:To prevent the decrease in transmittance by providing the specific antiabsorption layer between glass and underlying contact layer in the multilayer antireflection film formed by way of the underlying contact layer of metal oxide on the glass containing assymetric metal ions. CONSTITUTION:An antiabsorption layer 1 of film thickness 5mmu or over composed of silicon oxide, selium fluoride, glass for vapor deposition or other is provided on glass 3 containing assymetric metal ions such as Pb<2+>, Sn<2+>. On this are formed an underlying contact layer II of metal oxide such as of, e.g., ZrO2, (film thickness; about lambda/2, lambda is the wavelength of the target light) and a layer I of MgF2 (film thickness; about lambda/4) to provide the multilayer antireflection film. The abovementioned antiabsorption layer 1 prevents the formation of any metal film on the glass 3 surface, prevents the decrease in transmittance, is effective at above film thickness 5mmu and is able to nearly perfectly prevent the decrease in transmittance at above film thickness 10mmu.
JP4239679A 1979-04-06 1979-04-06 Multilayer antireflection film containing antiabsorption layer Pending JPS55570A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4239679A JPS55570A (en) 1979-04-06 1979-04-06 Multilayer antireflection film containing antiabsorption layer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4239679A JPS55570A (en) 1979-04-06 1979-04-06 Multilayer antireflection film containing antiabsorption layer

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP6747074A Division JPS5442629B2 (en) 1974-06-12 1974-06-12

Publications (1)

Publication Number Publication Date
JPS55570A true JPS55570A (en) 1980-01-05

Family

ID=12634897

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4239679A Pending JPS55570A (en) 1979-04-06 1979-04-06 Multilayer antireflection film containing antiabsorption layer

Country Status (1)

Country Link
JP (1) JPS55570A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6098401A (en) * 1983-11-02 1985-06-01 Hitachi Ltd Plastic optical parts
EP0231112A2 (en) * 1986-01-28 1987-08-05 Minnesota Mining And Manufacturing Company Imageable material and process

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3176575A (en) * 1960-12-19 1965-04-06 Bell & Howell Co Low reflectance optical member coatings with barrier layer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3176575A (en) * 1960-12-19 1965-04-06 Bell & Howell Co Low reflectance optical member coatings with barrier layer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6098401A (en) * 1983-11-02 1985-06-01 Hitachi Ltd Plastic optical parts
JPH0549962B2 (en) * 1983-11-02 1993-07-27 Hitachi Ltd
EP0231112A2 (en) * 1986-01-28 1987-08-05 Minnesota Mining And Manufacturing Company Imageable material and process

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