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Anti-reflection film and optical components

A technology of anti-reflection film and optical components, which is applied in the direction of optical components, optics, optical mechanical equipment, etc., can solve the problem of low reflectivity, etc., and achieve the effect of reducing the occurrence of ghosting and less deviation

Inactive Publication Date: 2016-01-27
HOYA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, Patent Document 2 discloses a 12-layer anti-reflection film, in the wavelength range of 280nm to 700nm, the reflectance measured at an incident angle of 5 degrees is less than 1%

Method used

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  • Anti-reflection film and optical components
  • Anti-reflection film and optical components
  • Anti-reflection film and optical components

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Experimental program
Comparison scheme
Effect test

no. 2 Embodiment

[0181] Enumerated in table 5 is the concrete second embodiment of anti-reflection film (film composition of 4 layers: Sub / x 1 L / x 2 M / yH / zL / Air). First, the constituent materials will be described, and optical glass (glass type name: M-BACD12) manufactured by HOYA Co., Ltd. was used as the base material of the meniscus concave lens 11 . In addition, among the layers constituting the antireflection film, the first layer 12a is made of magnesium fluoride (MgF 2 ), the second layer 12b is made of aluminum oxide (Al 2 o 3 ), the third layer 12c is made of an optical film material (product name: OH-5 (mixed film of zirconium oxide and titanium oxide (ZrO 2 +TiO 2 ))), the fourth layer 12d is made of magnesium fluoride (MgF 2 )constitute. Among them, the ratio of the mixture constituting the third layer is: ZrO 2 : TiO 2 =9:1. In addition, the values ​​of the symbols x, y, and z are applicable to the following value ranges:

[0182] x 1 =0.01~0.50

[0183] x 2 =1.00~1....

no. 3 Embodiment

[0213] Enumerated in table 6 is the specific 3rd embodiment of anti-reflection film (film composition of 4 layers: Sub / x 1 L / x 2 M / yH / zL / Air). First, the constituent materials will be described, and optical glass (glass type name: M-BACD12) manufactured by HOYA Corporation was used as the base material of the concave meniscus lens 11 . In addition, among the layers constituting the antireflection film, the first layer 12a is made of silicon oxide (SiO 2 ), the second layer 12b is made of aluminum oxide (Al 2 o 3 ), the third layer 12c is made of an optical film material (product name: OH-5 (mixed film of zirconium oxide and titanium oxide (ZrO 2 +TiO 2 ))), the fourth layer 12d is made of magnesium fluoride (MgF 2 )constitute. Among them, the ratio of the mixture constituting the third layer is: ZrO 2 : TiO 2 =9:1. In addition, the values ​​of the symbols x, y, and z are applicable to the following value ranges:

[0214] x 1 =0.01~0.50

[0215] x 2 =1.00~1.60

...

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Abstract

PURPOSE: A reflection barrier layer and an optical element are provided to effectively reduce ghost with low variation of the optical property of the whole reflection barrier by comprising with less layer number of the reflection barrier. CONSTITUTION: A waveform distributed in a mountain shape by passing a peak unit of a maximum reflection rate(P1) is defined as a peak waveform(1). A waveform distributed in a mountain shape by passing a peak unit of a maximum reflection rate(P2) is defined as a peak waveform(2). The peak waveform exits in a first wave length domain(W1) which becomes a short wavelength side and the peak waveform exits in a second wave length domain(W2) which becomes a short wavelength side. A maximum reflection rate in the first wave length domain and the maximum reflection rate in the second wavelength domain satisfy a relation of P1>P2. A wavelength range in which a reflection rate is less than a certain value is shifted to a wavelength longer than the second wavelength domain. [Reference numerals] (AA) Reflectivity(%); (BB) Wavelength(nm)

Description

technical field [0001] The present invention relates to an antireflection film and an optical element provided with the antireflection film. Background technique [0002] In order to suppress the loss of transmitted light and prevent ghosting or halation, lenses or protective glass covers for cameras for photography (including digital cameras), cameras for broadcasting, surveillance cameras installed outdoors or on vehicles, astronomical telescopes, etc. Anti-reflective coating is provided on the surface. As an anti-reflection film, a film structure designed in such a way that a low-refractive-index film and a high-refractive-index film are laminated and reflected light generated at the interface of each layer and light incident on each layer is proposed by interference And cancel each other out. [0003] For example, Patent Document 1 discloses a 4-layer anti-reflection film, for light incident on the optical surface of an optical component with a wavelength range between...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B1/115G02B3/04
CPCB32B7/02G02B1/115G02B3/02G03F7/091
Inventor 川岸秀一朗山下照夫
Owner HOYA CORP