JPS5758109A - Infrared-ray reflective filter - Google Patents

Infrared-ray reflective filter

Info

Publication number
JPS5758109A
JPS5758109A JP13283980A JP13283980A JPS5758109A JP S5758109 A JPS5758109 A JP S5758109A JP 13283980 A JP13283980 A JP 13283980A JP 13283980 A JP13283980 A JP 13283980A JP S5758109 A JPS5758109 A JP S5758109A
Authority
JP
Japan
Prior art keywords
infrared
ray reflective
reflective filter
filter
conductive film
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
JP13283980A
Other languages
Japanese (ja)
Inventor
Tadaaki Kaneko
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.)
Toshiba Electric Equipment Corp
Toshiba Denzai KK
Original Assignee
Toshiba Electric Equipment Corp
Toshiba Denzai KK
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 Toshiba Electric Equipment Corp, Toshiba Denzai KK filed Critical Toshiba Electric Equipment Corp
Priority to JP13283980A priority Critical patent/JPS5758109A/en
Publication of JPS5758109A publication Critical patent/JPS5758109A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/28—Interference filters
    • G02B5/281—Interference filters designed for the infrared light
    • G02B5/282—Interference filters designed for the infrared light reflecting for infrared and transparent for visible light, e.g. heat reflectors, laser protection

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Filters (AREA)

Abstract

PURPOSE:To obtain an infrared-ray reflective filter having less loss of visible radiation by forming a transparent conductive film on at least one surface of a transparent substrate and by providing on the surface or opposite surface a multipleinterference thin film whose minimum value of spectral transmittivity is within the 0.8-1.2mum range. CONSTITUTION:On a transparent substrate 1 of borosilicate glass, a transparent conductive film 2 of In oxide obtained by doping, for example, Sn is provided. On it, layers of ZnS3a and MgF23b are laminated by turns each to thickness lambda/4 (lambda= 0.9mumu). Consequently, a filter which has less loss of visible radiation and cuts off most of infrared rays is obtained.
JP13283980A 1980-09-26 1980-09-26 Infrared-ray reflective filter Pending JPS5758109A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13283980A JPS5758109A (en) 1980-09-26 1980-09-26 Infrared-ray reflective filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13283980A JPS5758109A (en) 1980-09-26 1980-09-26 Infrared-ray reflective filter

Publications (1)

Publication Number Publication Date
JPS5758109A true JPS5758109A (en) 1982-04-07

Family

ID=15090718

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13283980A Pending JPS5758109A (en) 1980-09-26 1980-09-26 Infrared-ray reflective filter

Country Status (1)

Country Link
JP (1) JPS5758109A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6238402A (en) * 1985-08-13 1987-02-19 Asahi Glass Co Ltd Optical filter
JPS63235902A (en) * 1987-03-25 1988-09-30 Toshiba Corp Cold mirror

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6238402A (en) * 1985-08-13 1987-02-19 Asahi Glass Co Ltd Optical filter
JPS63235902A (en) * 1987-03-25 1988-09-30 Toshiba Corp Cold mirror
JPH0786568B2 (en) * 1987-03-25 1995-09-20 東芝ライテック株式会社 Light source

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