[go: up one dir, main page]

WO2012017930A1 - Filtre à densité neutre présentant une propriété d'élimination des infrarouges - Google Patents

Filtre à densité neutre présentant une propriété d'élimination des infrarouges Download PDF

Info

Publication number
WO2012017930A1
WO2012017930A1 PCT/JP2011/067392 JP2011067392W WO2012017930A1 WO 2012017930 A1 WO2012017930 A1 WO 2012017930A1 JP 2011067392 W JP2011067392 W JP 2011067392W WO 2012017930 A1 WO2012017930 A1 WO 2012017930A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
base material
filter
dielectric
substrate
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.)
Ceased
Application number
PCT/JP2011/067392
Other languages
English (en)
Japanese (ja)
Inventor
敏男 福島
進 八木
浩己 田中
恵一 横田
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.)
TANAKA ENGINEERING Inc
Original Assignee
TANAKA ENGINEERING 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 TANAKA ENGINEERING Inc filed Critical TANAKA ENGINEERING Inc
Publication of WO2012017930A1 publication Critical patent/WO2012017930A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/22—Absorbing filters

Definitions

  • the ND filter 20 is formed on the base material 10 first, and then the IRC film 22 is formed on the ND film 20.
  • the IRC film 22 is formed on the base material 10 on which the ND filter 20 is formed.
  • the substrate-side first dielectric film 31 (first layer), the substrate-side third dielectric film 33 (third layer), and the anti-substrate of the ND film 20 are used.
  • the material constituting the side second dielectric film 53 (seventh layer) is SiO 2
  • the base material side second dielectric film 32 (second layer) and the non-base material side first dielectric film 51 (fifth layer) ) Is SiN.
  • FIGS. 13A to 13D show examples in which the ND film 20 is partially formed on the surface of the substrate 10.
  • the visible light transmittance can be greatly changed by changing the light transmission position. It becomes possible.
  • the thickness (film thickness) of the dielectric films included in the anti-base material side dielectric layer 50.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Blocking Light For Cameras (AREA)
  • Optical Filters (AREA)

Abstract

La présente invention a pour objet un filtre à densité neutre présentant une propriété d'élimination des infrarouges qui est en mesure de mieux planariser la transmittance de la lumière dans la région de lumière visible qu'un filtre d'après l'art antérieur et qui présente en outre une propriété d'élimination des infrarouges. Un filtre à densité neutre (1) d'après la présente invention comprend : un substrat (10) ayant une certaine transmissivité à la lumière ; un film à densité neutre (20) qui est formé sur la surface du substrat (10) et qui régule la quantité de lumière visible transmise ; et un film d'élimination des infrarouges (22) qui est formé sur le film à densité neutre (20) et qui régule la quantité de lumière infrarouge transmise.
PCT/JP2011/067392 2010-08-04 2011-07-29 Filtre à densité neutre présentant une propriété d'élimination des infrarouges Ceased WO2012017930A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010-175457 2010-08-04
JP2010175457A JP4914955B2 (ja) 2010-08-04 2010-08-04 Ｉｒカット機能付きｎｄフィルタ

Publications (1)

Publication Number Publication Date
WO2012017930A1 true WO2012017930A1 (fr) 2012-02-09

Family

ID=45559431

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2011/067392 Ceased WO2012017930A1 (fr) 2010-08-04 2011-07-29 Filtre à densité neutre présentant une propriété d'élimination des infrarouges

Country Status (2)

Country Link
JP (1) JP4914955B2 (fr)
WO (1) WO2012017930A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103576227A (zh) * 2012-07-30 2014-02-12 肖特公开股份有限公司 光学滤波器、其制造和用途

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5942472B2 (ja) * 2012-02-27 2016-06-29 キヤノン電子株式会社 光量調整装置
JP7261556B2 (ja) * 2018-10-01 2023-04-20 キヤノン電子株式会社 光学フィルタ、撮像装置、光学センサ
JP2020056875A (ja) * 2018-10-01 2020-04-09 キヤノン電子株式会社 光学フィルタ、撮像装置、光学センサ
JP7194557B2 (ja) * 2018-10-19 2022-12-22 キヤノン電子株式会社 光学フィルタ、及び光量調整装置、撮像装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002107509A (ja) * 2000-09-28 2002-04-10 Asahi Precision Co Ltd Ｎｄフィルタ

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002107509A (ja) * 2000-09-28 2002-04-10 Asahi Precision Co Ltd Ｎｄフィルタ

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103576227A (zh) * 2012-07-30 2014-02-12 肖特公开股份有限公司 光学滤波器、其制造和用途
CN103576227B (zh) * 2012-07-30 2018-04-10 肖特公开股份有限公司 光学滤波器、其制造和用途

Also Published As

Publication number Publication date
JP2012037610A (ja) 2012-02-23
JP4914955B2 (ja) 2012-04-11

Similar Documents

Publication Publication Date Title
JP5013022B2 (ja) 赤外線カットフィルタ
US9726797B2 (en) Near-infrared cut filter
CN100392440C (zh) 光线截止滤光片
JP2013156619A (ja) Ｉｒカット機能付きｎｄフィルタ
JP2007183525A (ja) 誘電体多層膜フィルタ
JP4914955B2 (ja) Ｉｒカット機能付きｎｄフィルタ
WO2016189848A1 (fr) Film anti-réflexion, élément optique et système optique
JP2017040909A (ja) 光学フィルタおよびそれを有する光学系、撮像装置、レンズ装置
JP2010032867A (ja) Ｉｒカットフィルタ
JP2018092030A (ja) 光学フィルタ及び撮像光学系
JP2013083885A (ja) Ｎｄフィルタ
JP2008139693A (ja) 赤外カットフィルタ
JPH11202127A (ja) ダイクロイックミラー
JP6289526B2 (ja) 光学素子及びそれを有する光学系
US7710670B2 (en) ND filter
JP2004258494A (ja) Ｎｄフィルタ
JP4914954B2 (ja) Ｎｄフィルタ
JP2018180430A (ja) 光学フィルタ
JP4963027B2 (ja) Ｎｄフィルタおよびその製造方法、それらを用いた光量絞り装置
JP2006301487A (ja) 近赤外線カットフィルタ
JP5126089B2 (ja) 光線カットフィルタ
JP2012037873A (ja) Ｉｒカット機能付きｎｄフィルタ
JP7261556B2 (ja) 光学フィルタ、撮像装置、光学センサ
JP2006259124A (ja) コールドミラー
JP2020056873A (ja) 光学フィルタ、及び撮像装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11814556

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11814556

Country of ref document: EP

Kind code of ref document: A1