JPS57138602A - Antireflection film - Google Patents

Antireflection film

Info

Publication number
JPS57138602A
JPS57138602A JP56024455A JP2445581A JPS57138602A JP S57138602 A JPS57138602 A JP S57138602A JP 56024455 A JP56024455 A JP 56024455A JP 2445581 A JP2445581 A JP 2445581A JP S57138602 A JPS57138602 A JP S57138602A
Authority
JP
Japan
Prior art keywords
antireflection film
successively
optical
layers
refractive indices
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
JP56024455A
Other languages
Japanese (ja)
Inventor
Hirozo Tani
Norio Uetsuki
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.)
Minolta Co Ltd
Original Assignee
Minolta Co Ltd
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 Minolta Co Ltd filed Critical Minolta Co Ltd
Priority to JP56024455A priority Critical patent/JPS57138602A/en
Publication of JPS57138602A publication Critical patent/JPS57138602A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/11—Anti-reflection coatings
    • G02B1/113—Anti-reflection coatings using inorganic layer materials only
    • G02B1/115—Multilayers

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Surface Treatment Of Optical Elements (AREA)

Abstract

PURPOSE:To obtain an antireflection film of small residual reflectivity over the entire visible wavelength region for substrate glass of a wide refractive index range by coating the antireflection film of 5-layered structures in such a way as to have specific refractive indices and optical film thicknesses as well as design wavelength. CONSTITUTION:In an antireflection film to be coated on the surface of optical glass, this antireflection film is so formed as to satisfy the conditions; N1d1 0.25lambdaO, 1.30<=N1<=1.45; 0.45lambda0<=N2d2<=0.60lambdaO, 1.90<=N2 <=2.30; N3d3<=0.25lambdaO, 1.40<= N3<=1.80; N4d4<=0.25lambdaO, 1.90<=N4<=2.30; N5d5<=0.25lambdaO; 1.40<= N5<=1.80; N1<N3, N1<N5 wherein the refractive indices of the constituting materials of the 1st- 5th layers, which are the 1st, the 2nd, the 3rd, the 4th, the 5th layer successively from the air side to the substrate glass side, are defined as N1, N2, N3, N4, N5 successively, the optical film thicknesses of the 1st-5th layers successively as N1d1, N2d2, N3d3, N4d4, N5d5 and the design wavelength as lambdaO.
JP56024455A 1981-02-20 1981-02-20 Antireflection film Pending JPS57138602A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56024455A JPS57138602A (en) 1981-02-20 1981-02-20 Antireflection film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56024455A JPS57138602A (en) 1981-02-20 1981-02-20 Antireflection film

Publications (1)

Publication Number Publication Date
JPS57138602A true JPS57138602A (en) 1982-08-27

Family

ID=12138631

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56024455A Pending JPS57138602A (en) 1981-02-20 1981-02-20 Antireflection film

Country Status (1)

Country Link
JP (1) JPS57138602A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09329702A (en) * 1996-06-10 1997-12-22 Nikon Corp Antireflection film
JP2009168986A (en) * 2008-01-15 2009-07-30 Hoya Corp Antireflection coating, optical member having the same, interchangeable lens unit, and imaging device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09329702A (en) * 1996-06-10 1997-12-22 Nikon Corp Antireflection film
JP2009168986A (en) * 2008-01-15 2009-07-30 Hoya Corp Antireflection coating, optical member having the same, interchangeable lens unit, and imaging device

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